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The trawler winch is a main winching tool in the fishing operation of trawler. The disturbing influence of various factors such as sea wind and waves, change in the size of the catch and the turning of the fishing vessel during the operation of the trawler will cause unbalanced force on the wire rope of the two winches, which will easily cause the deformation and damage of the fishing net facilities and directly affect the improvement of the fishing yield and increase the harvest. In order to compensate for the change of the tension of the winch tractor during the operation of the trawler, the change of the load tension caused by the wave, or the rotation direction of the fishing vessel, and to ensure the good shape of the net opening, an electro-hydraulic control technology was used to design an automatic trawler tension controller. The tension control method of the trawler is investigated. The tension sensor is used as the input information of the electrical signal of the trawler's left and right trawler, which is measured indirectly and transmitted to the controller for logical operation, and the output torque of the hydraulic motor is changed by controlling the pilot overflow, which drives the trawler winch to adjust the tension of the left and right trawler to achieve the dynamic balance of the control system. In order to solve the problem of the tension of the trawl and the influence of the length change on the trawl, we designed an intelligent control system combining PLC control system and hydraulic system and used AMEsim hydraulic simulation software system to model and simulate it, the results show that without PLC control the torque of hydraulic motor 1 is 2387.7NM, the torque of hydraulic motor 9 is 2148.64NM the difference is 239.06 NM uneven force on both sides of the trailing platform, after adding PLC adjustment torque is obviously controlled torque to maintain about 2300NM, within a certain range to play a reliable adjustment effect.

This paper introduces the rapid automatic control module of trawler based on the hydraulic system of ‘Zhejiang fishery scientific research ship No.2’.The hydraulic simulation model of double motor winch system is built in AMESim software, and SIMULINK module in MATLAB software designed closed loop fuzzy PID controller for hydraulic system simulation. through fuzzy PID control technology drives the hydraulic winch to quickly adjust the tension of the traction, maintain the stable balance of the traction force, maintain the optimization of network horizontal expansion, not only improve the fishing efficiency, but also timely and effective protection mesh. the technical achievements formed by the research will enable small and medium-sized trawlers to adjust the tension under various working conditions through the fuzzy PID control system to stabilize the opening shape of the trawl, so as to improve the automation level and fishing efficiency of related trawling equipment, and provide technical support for precision fishing.

Contrast experiment was developed on the semi-aerobic and anaerobic landfill treatment. Leachate nitrate nitrogen concentrations in different landfill layers spatially were monitored regularly in two landfill equipments, and variations and differences of leachate nitrate nitrogen concentration of different landfills were discussed. The results showed that differences on the variation characteristics of nitrate nitrogen concentration in space and time were obvious in the landfill treatments with different structures. In 73 weeks of monitoring period, nitrate nitrogen concentration in the middle and the lower layer of semi-aerobic landfill treatment was in turn stable within 55.40 mg/L and 40.80 mg/L; The concentration fluctuations in both layers were small in general. Nitrate nitrogen concentration decreased respectively to 9.26 mg/L, 6.82 mg/L and 4.69 mg/L at the 73th week from 28.51 mg/L, 4.44 mg/L and 5.85 mg/L at the initial landfill stage in the lower , middle and the upper layer of anaerobic landfill treatment. When degradation of the landfill treatments went into relatively stable stage, nitrate nitrogen concentration in the upper, middle and the lower layer of semi-aerobic landfill treatment was located respectively in 30-240 mg/L, 2.5-11.0 mg/L and 5.5-13.5 mg/L respectively, and the spatial distribution difference of nitrate nitrogen concentration in the upper layer of semi-aerobic landfill treatment was relatively big, but those of the middle and the lower layer were relatively small, and they were both lower than the upper layer. Nitrate nitrogen concentration in the upper, middle and the lower layer of anaerobic landfill treatment was located in 1.6-7.4 mg/L, 3.8-7.2 mg/L and 7.5-15 mg/L respectively, and showing a performance of spatial nitrate nitrogen concentration that was the lower layer> the middle layer >the upper layer. Under the experimental conditions, seim-aerobic landfill treatment was favorable to the nitrification and denitrification of leachate in contrast with the anaerobic landfill treatment.

This paper focuses on the robot trajectory planning algorithm in-depth study, we propose a new path planning algorithm to ensure that the velocity and the acceleration of the starting point and the destination point are zero at the same time, and there are continuity of the intermediate points also.Give the matlab simulation waveform diagram and the algorithm at last,and this trajectory planning provides a good reference value for robot trajectory studies of future.

Aiming at the path planning for intelligent vehicle in complex environment, local minimum problem is solved by the way of setting a virtual barrier point. And fuzzy controller is designed to make up some inherent shortcomings of artificial potential field method and safeguards the reliability of the path planning and path smoothness.

A novel efficient hybrid accelerated method is proposed for the fast analysis of the monostatic electromagnetic scattering problems arising from volume-surface integral equations (VSIE) formulation. In the first step, by utilizing the low rank property, several largest eigenvalues and corresponding eigenvectors of the multiple right hand sides can be computed and saved efficiently by adaptive cross approximation (ACA) algorithm. The iterative solution of linear equations is required at these principle eigenvectors. Compared with solving linear equations at each angle repeatedly, the proposed method is able to greatly reduce the number of equations. In the second step, a disturbed symmetric successive over-relaxation (D-SSOR) preconditioner is constructed to speed up the convergence rate of iterative methods. Numerical results demonstrate that the present method can reduce the computational time significantly for monostatic VSIE calculation with high accuracy.

In the paper, by designing evaluation system, capital construction investment efficiency of 13 coal mines in Shanxi province is analyzed through using principal component analysis. Meanwhile comprehensive scores of capital construction efficiency are calculated. The highest score and the lowest score are 3.813 and-1.141, respectively. Finally, 13 coal mines are divided into three levels, sufficiently distinguishing capital construction efficiency of those coal mines.

Synthetic Aperture Radar (SAR) is generally considered as an all-time and all-weather system. However, weather conditions will sometimes still affect the SAR imaging, especially when rain rate or operating frequencies are increased. In this paper, the influence of rainfall attenuation in multi-band 3-D complex target SAR imaging is investigated. As SAR echo can be considered as scattering from the target illuminated by incident wave, physical optics (PO) method is used to compute the scattered data because of its good balance between efficiency and accuracy in high frequency band. Numerical results demonstrate the rain attenuation impact on SAR image, when the relationship between rain rate and precipitation attenuation in multi-frequency band are quantitative analyzed.

With large-scale wind power integrates into power system, the risk brought by the uncertainty of wind power output can no longer be neglected. Under this circumstance, the operation risk due to the uncertainty of wind generation and the contribution of wind power to energy conservation and emission reduction are quantified, and the corresponding quantified operational cost, environmental cost and operation risk are being integrated into the economic dispatching model to establish a multi-objective optimization dispatch model. Non-dual interior point method is used to solve the optimization problem. The method is applied to Hebei Southern power grid, simulated with actual wind power output data of one typical day. Simulation results show the rationality and effectiveness of the proposed method.

N-(2-hydroxy-3-trimethylamine) propyl chitosan chloride (HTCC) nanoparticles were prepared through two-step method using chitosan with low molecular weight and high degree of deacetylation. H of-NH2of chitosan was replaced with quaternary ammonium salt groups to form HTCC. HTCC was further modified by ion sol-gel reaction with sodium tripolyphosphate, the reaction can be in the dispersion under the action of Span-80, and the ionic bonds formed between phosphate group of sodium tripolyphosphate and the amino group in HTCC main chain, well dispersed HTCC nanoparticles with a average diameter of 23.6nm were than obtained. The structure was characterized with fourier transform infrared spectrum (FTIR). When HTCC nanoparticles were applied to contact withstaphylococcus aureus(S.aureus) andescherichia coli(E.coli), the results showed completely under the condition of antimicrobial resistance.

For the reality of the variable pressure in the oil field, an adjustable disk choke valve is introduced in this paper. The structure and working performance of the valve is described in detail, too. The field application of the valve shows that the valve has such advantages as simple structure, quickly facilitate, easy installation and cleaning, long service life, safe and reliable, all these leads to the broad application prospect of the valve.

This paper presents a framework for generating assembler and disassembler from ADL (architecture description language), which enables processor architecture designers to explore a large design space by quickly modifying the architecture description written in high abstraction level ADL. We present our ADL: GADL(GNU tool chain based ADL) and propose the binary utilities generation algorithms for GADL. Some issues are discussed and resolved which have not been covered by related research. We have implemented the binary utilities generator with the proposed algorithms and used it to generate the binary utilities for a DSP we are designing, which shows the efficiency of the algorithms.

In the field of mechanical installation and repairing, drawing devices are often used to disassemble or push up components of various types of axie and set. Differential thread usually consists of two sets of threads, which differ in the aspect of side pitch, the movement distance of differential thread when it runs a circle should be the deviation of the two spiral side pitches. Through the application of differential thread, it enables us to make changes in the transmission of these two screw pairs making relative movement. Based on this principle, when it is made into the application of manual drawing device, it optimized structure of drawing device, receiving a better result.

The structure and working process of automatic vent valve and gas purification equipment is introduced in this paper. To analyze the flow field in the valve, numerical simulations are also performed in the paper. The results show that the valve can greatly reduce the pressure of products from the oil well and acts very well in the control of the blowout on the wellhead. By using the vent valve and gas purification equipment, the back pressure of the well head can be properly handled, the frozen of the output gas can be avoid when the ambient temperature is extremely low, and the stability and reliability of the well head of the pumping unit can be improved greatly. All these can bring broad allied field for the equipment in our country.

A blind pipe type fiber Bragg grating hydrostatic gauge is developed to measure the pressure of liquid. In the hydrostatic gauge, the inside of elastic tube is suffered by the pressure of liquid and drives the wavelength shift of a fiber Bragg grating mounted on the outside of elastic tube. For eliminating the disturbance of temperature variation, the other grating is mounted on the n type sheet metal and is immune to the applied stress strain of elastic tube. The hydrostatic experiment indicates that the pressure sensitivity of the hydrostatic gauge is 0.425 nm/MPa, when the original Bragg wavelength of pressure-sensitized grating is 1557.510 nm.

F doping BiFeO3-xFx (x=0, 0.02, 0.04, 0.06, 0.08) thin films were successfully fabricated on ITO/glass substrates by sol-gel method. X-ray diffraction analysis indicated that the un-doped BiFeO3 and F doping BiFeO3 thin films presented rhombohedral structure with the space group R3c. F-doping is found to significantly enhance the dielectric constant and decrease the leakage current density for x=0.08 compared with x=0. This study provides direct evidence that the multiferroic characteristics of BiFeO3 are sensitive to the anion doping, such as F, providing a convenient alternative to manipulate the electric polarization in multiferroic oxides.

This paper results the tension of putting thread machine by analyzing and calculating the polarization grid technology requirements; uses CATIA and ANSYS Workbench to build a three-dimensional solid model and analyze the static characteristics and provides a reliable reference In order to improve the structure of put thread machine.

In this paper, electronic map information is used to registration, extract the coast contours, then operate equidistant sampling, extracting the key point from the corner, identify potential area of ship docking and rule it. The results show that the methods can find the candidate region of ship quickly and accurately, avoid the useless search, improve the efficiency of detection and recognition algorithm.

For the intake restrictors which are designed in line with FSAE race stipulations, this paper carries out compute simulation on the convergent section and divergent section of the intake restrictors via CFD software; the paper systemically analyzes the distribution characters of its flow field, thus obtaining optimal design scheme. It finds through simulation that: when the converging half angle of the restrictor is less than 45°, the outlet flow of the restrictor will decrease as the converging half angle increases; meanwhile, the divergence half angle will affect the outlet flow of the restrictor as the pressure difference between the restrictor inlet and outlet varies. According to the simulation results, the optimal scheme finally designed is: the intake restrictor has the best effect when the converging half angle of the restrictor is 10°, while the divergence half angle is 11°.

Zhengyangmen gate tower is a national emphasis cultural relic unit along the north-south axis of Beijing, which is above the Beijing metro line 2. Based on dynamic analysis model of gate tower and the position of gate tower and subway, the dynamic response characteristics of gate tower induced by Beijing metro line 2 are calculated, and compared with the in-site vibration test data.

With the development of economy, project contract has now become global. However, there’re always different kinds of risks. Among all, the combination of environmental risks,strategic risks and executive risks may pose huge challenges to the project management. This article is mainly focus on the current development and risks of the international project contract, and provides solutions to the unnecessary lost caused by the differences of culture, politics, nature and laws between China and foreign countries during the project cooperation.

With the hybrid structure including outer steel grids and inner reinforced concrete core tubes (RCCT) as the background, the key problems involved in the performance-based structural design are analyzed and the table test is conducted. Anti-seismic and stability indicators are defined based on the structural characteristics; The research on seismic response is made through elastic-plastic time-history analysis and verified through the table test; The overall stability of the outer steel grids and the anti-collapse capability following the ineffectiveness of some key components are analyzed. Results show that the structure in which the outer steel grids are connected with internal steel frame and RCCT is practicable, and the said three systems can work together effectively; The time-history analysis shows that the structure is weak at the elevation of 5-15m but can still meet the expected anti-seismic target under rare earthquakes. The space steel structure features sound stability and high redundancy, which ensures the structure will not collapse even if several key components are damaged.

Reliable power network can provide reliable operation of electric power for dispatching communication security, due to many key network nodes external connectivity in the electric power communication network has only one path, so once the link damage because of emergencies, these networks because of the failure of nodes (or communication link) and power operation scheduling of exception can occur easily, thus to cause great damage to the safe operation of the whole power network. In order to improve the robustness of system in this case, this paper designed a new optimization algorithm based on the equivalent network to simplify the real network and the network analysis.

A frequency identification modeling method for a small UAV helicopter and its control system design is presented. A modified frequency identification method for a state-space model of helicopter is presented. The overall concept is to extract a complete set of non-parametric input-to-output frequency responses that fully characterizes the coupled helicopter dynamics, conduct a nonlinear search based on secant method for a linear state-space model that matches the frequency-response data set. The accuracy of the identified model is verified by flight experiments. A path following controller is presented for an unmanned helicopter with two-loop control frame. The outer-loop is used to obtain the expected attitude angles through reference path and speed with guidance-based path following control, and the inner-loop is used to control the attitude angles of helicopter tracking the expected ones with loop shaping method. Finally, an 8 trajectory tracking simulation is conducted to illustrate the efficiency of the proposed control method.

This document explains and demonstrates how to predict the fault point of rolling bear. Rolling bearing vibration signals are decomposed by the LMD method to get several single components including amplitude modulation and frequency modulation signals. Combing the order analysis method can get the fault point of rolling bear.

The theoretical solution of the transient response of the wind-induced internal pressure based on assuming the external pressure is simple harmonic excitation by the linear equation governing the dynamics of internal pressure was presented. The effect of orifice loss coefficient, opening angle, the opening ratio and background porosity factor (Pf) on the transient internal pressure character was analyzed. The result shows: the peak value of the transient internal pressure and the overshooting ratio decreases with the increase of the orifice loss coefficient; the opening angle decides the overshooting effect. The overshooting ratio increases with the opening ratio and presents a decreasing trend while Pf increases; the effect of these factors on steady internal pressure is relatively small.

The commercial pedestrian street, which serves as an important part of the city sidewalks, is famous for combining commerce and entertainment. Based on the presence of two typical commercial pedestrian streets in Xi’an city, the research makes a study on the commercial pedestrian street by quantitative analysis. The essential data derives from the questionnaire surveys on the presence of cross-section, characteristics of pedestrian, obstacles, presence of related facilities in the commercial pedestrian streets, and some other factors. Then through SPSS software, the main factors are selected from the data. With the help of previous work, the research proposes the regression model of evaluating the level of service (LOS) of streets. Finally, this research uses the model to finish evaluating the level of service of a commercial pedestrian street Luomashi in Xi’an, which shows that the model has performed well during the process.

Nowadays the workover rig is more often used in outdoor work, and the field environment is complicated and changeable.Therefore, it becomes extremely important to conduct a detailed analysis of stress of the workover rig derrick translational system.This paper takes Liaohe Oilfield new vehicular pressure balance workover rig derrick translation system as an example, a finite element analysis model is established to analyze the stress conditions of the derrick truck system.The result completely conforms to the actual requirements, thus verifying the rationality of the design and providing the basis for the optimization design of the translation system.

In response to the estimation of the peak values of wind pressure on the maintenance structure, the results with TTU low-rise building standard model of different methods are analyzed and compared. The results show: the results of peak-to-average method and Cook & Mayne method are very close for the long sample estimation of the peak values of wind pressure, the former is the most ideal method for estimation of extreme wind pressure; For short sample estimation, the peak-to-average method fails because the sampling is not long enough, but the Cook & Mayne method can estimate accurate peak value of wind pressure by the short sample (the corresponding prototype time not less than 600s); The peak factor method based on the assumption of normal distribution is not applicable to low-rise building and the results are relatively dangerous.

The high strength stainless steel wire mesh and high-performance mortar reinforcement has been gradually applied in construction, bridge reinforcement project. Study of the reinforcement at home and abroad mainly focus on research of strengthening RC beam shear, bending, and seismic performance. Although the application of RC column has already been carried out, there is also a short of basic technical an applied research for further study. After looking through a large amount of references, this article gives a summary of the present study about reinforcing RC column with the reinforcement, draws some conclusions and predicts the prospect of development.

The flow of syndiotactic 1,2-polybutadiene (s-PB) filled with carbon nanotubes (CNTs) nanocomposites behave quite differently from Newtonian fluid, they exhibit both viscous and elastic characteristic and are termed as viscoelastic fluid. The viscoelastic properties can be determined by a Rheometer. In this studies a parallel plates arrangement where the upper plate is being rotated/oscillated with a sine wave and the stress and phase angles were measured. From our study on syndiotactic 1,2-polybutadiene and its nanocomposites with carbon nanotubes (CNTs), the results show that for a fixed amplitude and temperature, the storage and loss modulus increase with the increase of frequency. At low frequency the s-PB/ CNTs nanocomposites melts behaved more like a viscous liquid and changed the behavior into more elastic at high frequency.

Establishing efficient evaluation system of the emergency ability of water emergency is of great importance to strengthen the emergency response ability to maritime emergency of government departments. According to the principles of establishing evaluation index, an evaluation system was proposed on AHP in the article. Then an evaluation model based on AHP and FCE was established, which provided scientific evidences for the emergency management of maritime emergency in the future.

While vigorously promoting sustainable urban transport development today, as the most basic mode of transportation, pedestrian traffic draws people's attention. Meanwhile, China's urban population has seen a accelerated aging trend, which will have higher requirements in pedestrian traffic environment. This paper discusses the characteristics and position of pedestrian traffic, analyzes the main problems of current domestic pedestrian traffic and proposes countermeasures.

Based on the finite element analysis of the slip coat in the compulsory lifting system of hyper-thermal snubbing operation injected by steam, the static analysis with regard to the slip coat is undoubtedly employed taking advantage of the finite element software. And then, the failure forms are deduced and the maximum allowable stress is calculated by analyzing the stress distribution.

Considering the fact that the oil well conditions of LIAOHE oil field, the existing structure of the forced lifting and pushing system of work over rig is improved. Main drive gear pair of the forced lifting and pushing system improved is established to study the intensity of contact and modal in the operating process and the dynamic loads based on finite element method. Main failure forms in the condition of low speed and heavy duty is deduced from the distribution of the stress. Also, the maximum allowable stress and natural frequency is obtained. According to the simulation making use of ANSYS, a 3D contact stress analysis of several teeth and modal analysis in dynamic pre-stress of full teeth is illustrated with the rationality of the design.

In this article, using the method of the separation of cars and platform design to pressure balance work over rig, that is a large welded structure. Work platform components adopt link and structural member is h-section steel, in terms of stress at work is more complex. Through the 3D design software to model and to analyze the stress of the several typical working conditions, to verify the rationality of the design of the structure and put forward the improvement opinion. The analysis also can be widely applied in all kinds of integral welded structure.

Chitosan-PE bi-layer films exhibit antimicrobial activity but poor antioxidant activity. Oregano essential oil (100μL/100mL) was incorporated into chitosan solution to improve films antioxidant and antimicrobial behaviors. The present work investigated the scavenging of O2·, ·OH, DPPH radical and reducing power of film, antimicrobial activity was also evaluated. The results showed that the scavenging effect of film solution on O2·, ·OH, and DPPH was 80.87%, 85.56%, and 87.24%, respectively. Reducing power of film increased with the improvement of oregano essential oil. The antibacterial activity againstE. ColiandB. Subtilisincreased from 80.77% to 96.15% and from 93.02% to 98.10%, respectively. The preservation experiments showed that chitosan-PE film incorporated with oregano essential oil could extend the shelf life of pork to 810 days at 4°C.

The application system of solar energy comprises: solar water heating system, solar heating system and solar photovoltaic system, etc. The data monitoring system used in the solar water heating system consists of measuring and monitoring equipment, data acquisition appliances and data-center softwares. The measuring and monitoring equipment includes outdoor temperature sensor, total solar irradiance sensor, water inlet and outlet temperature sensor of heat collecting system, circulating flow sensor of heat collecting system and the electric meter for supplementary heat source, etc.. The data monitoring system used in the solar photovoltaic system consists of measuring and monitoring equipment, data acquisition appliances and data-center softwares. The measuring and monitoring system is composed of outdoor temperature sensor, total solar irradiance sensor, the sensor for the surface temperature of back panel of solar photovoltaic modules and electric meter for the monitoring of power generation of solar photovoltaic system, etc.

A functional potassium sodium niobate/polyimide (KNN/PI) composite films were prepared in this paper. KNN fillers are well dispersed in the PI matrix without any accumulation through in situ polymerization process. The optical band baps of the hybrid films become smaller with the increase of KNN loading. The optical band baps of the films with 0-20 wt% KNN filler are estimated to be 2.61 eV, 2.57 eV, 2.52 eV, 4.29 eV, 2.35 eV respectively.

Spectrally selective AlCr-AlCrON cermet solar absorber coating has been deposited on Cu substrate experimentally by reactive DC magnetron sputtering and heat-treated in air at 300°C for 2h. The spectral properties and thermal stability of the as-synthesized AlCr-AlCrON coatings were characterized. The solar absorptance and thermal emittance of the as-synthesized AlCr-AlCrON coating are 0.926 and 0.065, respectively. In addition, after heat treatment at 300 ° C for 500 h in air, the spectral properties of the as-synthesized AlCr-AlCrON coating is virtually unchanged. The results indicate that the as-synthesized AlCr-AlCrON coating has good spectral properties and thermal stability, which will be a good selective absorbing coating for mid-temperature solar vacuum collector tubes.

With the development of the coastal cities, land reclamation has become an important part in the construction of coastal engineering and the coastal development projects. In this paper, we consider the dredger fill of Tianjin Textile Economic Region as the research subject, analyzing the engineering geological characteristics of the dredger fill in this area from its basic physical properties, the soluble salt of the study area, the variation laws of PH and cation exchange properties.

A novel polyimide (PI) films with three kinds of monomers was synthesized in this paper. The polyimide unit is derived from Pyromellitic dianhydride (PMDA), 3,3',4,4'-benzophenonetetracarboxylic dianhydride, (BTDA), and 4,4, -diaminodiphenyl ether (ODA). The dielectric properties of the films were measured. The dielectric spectra show that dielectric constant is about 3.7, which is larger than the PI with two kinds of monomers. In addition, the loss tangent and conductivity of the films is quite small, which is important for the practical use of them.

This article describes the research progress and the development situation of soil dynamics. The soil dynamic constitutive model, dynamic test methods and research status of dynamic parameters are mainly discussed. Finally, some existing problems on the study of soil dynamic characteristics are proposed.

Based on the assumption of the improved groundwater pressure distribution, the calculation expression of anti-sliding stability factor for typical water-saturated rock slope is deduced through limit equilibrium method. Considering the combined effect of slope overload, seismic load, anchoring effect, ice frost, slip surface drag force and slope groundwater pressure, the comparative analysis of typical rock slope sliding stability under waterless and saturated conditions shows that, the outflow joint blocking and the groundwater levels rising have obvious adverse effects on the anti-sliding stability of rock slope. Figures about the relationship of stability factors and geometric factors were drawn and the anti-sliding stability factor can be directly obtained from these figures. All would be the references for the similar engineering projects.

In the production process for large and heavy workpieces of Nuclear Islande equipment and Hydrogenation reactor, Turn is the important technics of the convergence of every technological process, and a direct impact on production efficiency and production safety and production quality. The researching and manufacturing of overloaded upender for large and heavy workpieces will effectively contribute to the improvement of the production capacity. The force model under maximum load conditions is established. The force of upender body in the eversion process is analyzed. The main drive torque formula for upender turnover is obtained. From the actual functioning of the overloaded upender for large and heavy workpieces, carring a maximum load, the upender flip process is dynamic simulation on ADAMS. After the results were compared with theoretical calculations showed that: the variation between the two is consistent. The main parameter for driving of upender is designed. By theoretical calculations confirming simulation with each other, in simulation model, the feasibility of using the contact vice for defining non-hinged rotation vice is verified. And a new solution is provided for adding non-hinged rotation vice constraints to a similar shstem dynamics model. In this paper work it has an engineering value for the design of large and heavy equipment.

Zhengyang Men which is located on the north-south axis line of Beijing, is surrounded by the vital communication lines, and suffered from the environmental vibration induced by the busy ground traffic. In order to study the dynamic response of Zhengyang Men city gate and arrow tower, which is caused by ground traffic, the vibration characteristic of ground traffic is the basic research content. The motion equation, which is established by means of the vehicle dynamic model, and the ground traffic characteristic, which is summarized based on the traffic site investigation, are used to derive the vibration source form of a single type vehicle, further more the form of different type vehicle. And then the vibration source can be used for studying the dynamic response of city gate and arrow tower.

Based on the 3D unsteady incompressible Navier-Stokes equation and the turbulent model ofk-εtwo equations, the processes of electric multiple units CRH380B passing by sound barriers installed on viaducts at the speed of 350 km/h were numerically simulated by finite volume method. The aerodynamic impulse pressure on sound barriers was analyzed. The distribution of impulse pressure on perforated sound barriers was compared with that on those with no holes. Effects of the shape, the size, the density, and tilt angle of the holes on deloading properties of perforated sound barriers were investigated. The numerical results show that the deloading properties of perforated sound barriers with circular holes are similar to those with square holes. The holistic distribution of impulse pressure on perforated sound barriers is similar to those with no holes. The density increases in two different directions has almost the same influence on the deloading properties. Deloading properties of perforated sound barriers become worse when tilt angle of holes increases.

GIS technology has been applied in city planning management and virtual city. It still hasnt got more substantive achievements on aided design of regulatory plan. The notion of Modeling-Incubator has been advanced and integrated with GIS, which is the key resolution and method to 3D simulation of regulatory plan indexes, such as building coverage, floor area ratio, building interval etc. This resolution will be applied in regulatory plan assessment.