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Analyze the safety of the wire rope fixtures through experiment while constructing the COMAC ministry of installed plant. Pointed out the proper use of the provisions of the steel erection specification, and the number of provisions chuck is unsafe. The timely replacement of the shackle wire rope connection ensured the security of the lift process through experiments. This method can provide some experiences to the construction and fabrication of the steel member of the project.

The flexible overall hoisting technique is put forward for the construction of the 30000m2 COMAC roof which is made of solder ball grid structure. The numerical simulation is carried out and the effect of unequal lifting on structural behaviors is analyzed. Numerical analysis and engineering practicing show that the overall flexible hoisting technique is with sufficient safety and obvious advantage in economy.

There are six key points, such as steel truss column, hoisting frame, hoisting point, wire rope, wire rope connecting in the hoisting system which we construct the COMAC ministry of installed plant. This timely monitoring of several key points in the promotion process is to enhance the process controlled several indicators. For different key points used different monitoring methods for monitoring. The results showed that 6 monitoring method is reasonable, feasible. This method can provide some experiences to the construction and fabrication of the steel member of the project.

The flexible overall hoisting technique is put forward for the construction of the 30000m2 COMAC roof which is made of solder ball grid structure. It is critical to study how to properly measure the four ropes length of each lifting point. Language tools use in AUTOCAD AUTOLISP appropriate programming has been an efficient tool to correctly output the length of the rope. This method can provide some experiences to the construction and fabrication of the steel member of the project.

The use of hollow structural steel (HSS) columns filled with concrete has become widespread in the past few decades. The residual strength of a composite column may used to assess the potential damage caused by fire and help to establish an approch to calculate the strctural fire protection. Sum up BS standard, AISC standard and some research about cementiteous sprayed monolithic fire protection coatings of Prof. Han’s and calculate the residual strength of a composite column for New Terminal Building of Republic of Mauritius Sir Seewoosaugur Ramgoolam International Airport Expansion Project. The concolusion and method may be used by other approximate project.

Through the study of the theory of oil spill model, a mathematical modeling of oil spill on the sea is developed which with the consideration of spread, diffusion, drifting and attenuation of oil slick is influenced by evaporation and emulsification factors. A model that under the effect of ocean dynamic condition of tide, wind and wave, using Monte Carlo method to simulate the movement of oil slick is established. The modeling is applied to calculate and predict pollution range of oil spill at oil quay and oil ship in Daya Bay. The prediction results have basically shown the pollution situation by emergency of oil spill on the sea.

The acid rain in its natural environment, industrial and agricultural production and human health in serious harm, by the various national attentions, has become a worldwide environmental problem. Since the 80s of last century, along with economic development, China's acid rain pollution was accelerating trend in Europe and North America has become the world's third largest major contributor to acid rain, through a database search, find the relevant departmental annual reports, national survey The distribution of acid rain, more than 10 years of Acid Rain in China and changes in spatial and temporal distribution characteristics of a systematic analysis and research. To understand the impact of acid rain on soil structure, for us to study the impact of acid rain on the Three Gorges Dam is of great significance.