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1. Seismic Assessment and Design of Structures.

Author

Favvata, Maria and Favvata, Maria

Subjects
Chemistry, Research & information: general, CFRP strips, Chaboche kinematic hardening model, DBM, DESANM, Eurocode 8, FEM, IDA, IMPA, Impulsive Semi-Active Mass Damper, LRB design, M/φ characteristics, MPA, PSDM's assumptions, RC beam-column joint, RC isolated continuous girder bridge, RC structure, SPEAR, SPH method, SRS method, T-beams, Tempcore reinforcing steel, Voce isotropic hardening model, acceptance criteria, anchor bolt, anchoring devices, atypical cross-section, autoclaved lightweight aerated concrete (ALC) panel, axial compression failure, beam-column joints, bending damage, bending moment, beyond design basis earthquake, beyond-design-basis earthquake, bond, bridge, brittle failure, buckling-restrained brace, carbon fiber-reinforced polymer longitudinal bars, collapse fragility curve, concrete, cracked concrete, cumulative damage, cyclic loading, dam pier, damage distribution, damage index, damage measure, dampers' combination, design criteria, design-basis earthquake, dominated mode, dual-phase reinforcing steel, dynamic characteristics, dynamic load protocol, dynamic response, earthquake, earthquake loads, earthquake resistance design, earthquake-resistant design, finite element analysis, fragility curve, fragility curves, frequency contents combination in the time domain, frequency domain, frequency ratio, friction damper, global and local EDPs, incidence angle, incremental dynamic analysis, inelastic seismic analysis, laminated rubber bearing, lead rubber bearing, linear and bilinear PSDMs, loess area, magnetorheological damper, masonry infill panels, mass ratio, maximum displacement, maximum interstory drift, maximum roof displacement, modal-based ground motion selection, multi-hazard, multiple separations, n/a, near-fault ground motions, near-fault vertical earthquake, non-linear dynamic analysis, nonlinear dynamic analyses, nonlinear dynamic analysis, nonlinear response time history analysis, nonlinear static analysis, nonlinear time-history analysis, nonparametric method, nuclear facility component, nuclear metal component, optimization, parametric method, parametric study, passive energy dissipation systems, plastic hinge region, plastic strain, post-installed anchor, principal strain, probabilistic seismic assessment, pull-out, pull-out strength, pushover, pushover analysis, rapid seismic assessment, reinforced concrete, reinforced concrete (RC), reinforced concrete frames, reinforced concrete shear wall structure, reinforced polymer cement mortar (RPCM), reinforcement effect, response controlled systems, seismic, seismic analysis, seismic behavior, seismic calculation, seismic design codes, seismic evaluation performance, seismic excitation period, seismic fragility analysis, seismic isolation, seismic isolation frequency, seismic performance, seismic response, seismic response analysis, seismic site classification, setbacks, shaking table test, shear, shear force, shear retrofit, smooth reinforcement, soil response, steel buildings, steel structure, steel structures, story drift ratio, strain gauge, strain gauge rosettes, structural displacement, structural irregularity, structural performance evaluation, structural pounding, subspace identification, substandard buildings, tests, the cloud method, the copula function, torsional behavior, torsional vibration, traffic engineering, tuned mass damper, upgrading old RC structures, vertical component, vertical excitation amplitude, viscous damper, wind
Abstract

Summary: This Special Issue reprint is dedicated to presenting open and challenging issues in earthquake engineering. It consists of 29 peer-reviewed papers that cover a broad range of subjects and applications related to the seismic assessment and design of structures. Based on advanced computational, analytical, numerical, and experimental approaches novel results and discussions are presented. Within this context, the first studies of this issue/reprint are focused on providing an insight into the seismic performance of structures taking into account significant engineering components that still have not been fully addressed. Subsequently, there are studies with new strategies to improve the effectiveness of the dampers on the seismic mitigation performance of structures. Concerning performance-based earthquake engineering, new approaches in the seismic fragility assessment of structures are introduced. Furthermore, new innovative types of reinforced steel for the seismic design and assessment of RC structures are analytically and experimentally evaluated. The seismic performance of retrofitted structures is also addressed, while analytical modeling tools that can effectively capture the seismic behavior of substandard RC structural elements are introduced. Some other papers provide experimental results to evaluate and/or validate the structural performance of elements, such as anchors, connectors, and nuclear components. Finally, this issue/reprint also incorporates modified methodologies and identification techniques to improve seismic analysis methods in the field of structural engineering.

2. Experimental Study on the Influence of Expansion Agents and Fibers on the Dry Shrinkage Performance of Concrete

Author

Ge, Tao, Wu, Han, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Mei, Guoxiong, editor, Xu, Zengguang, editor, and Zhang, Fei, editor

Published
2024
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3. Effect of Iron Tailings Fine Powder as Admixture on the Properties of Cement Mortar and Concrete

Author

Tai, Wei, Tong, Xiaogen, Zhang, Kaifeng, Luo, Zuoqiu, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Mei, Guoxiong, editor, Xu, Zengguang, editor, and Zhang, Fei, editor

Published
2024
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4. Research on Design Method of Prefabricated Concrete Structure Based on BIM Technology

Author

Zhang, Yunlai, Shi, Xiajuan, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Xiang, Ping, editor, and Zuo, Liangdong, editor

Published
2024
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5. Research and Development of Modified Building Materials.

Author

Stefanidou, Maria and Stefanidou, Maria

Subjects
CO2 emission, HEMC, TritonX-100, activating solutions, activation energy, additives, amorphous poly alpha olefin, application properties, autogenous shrinkage, bond performance, bulk density, cellulose ether, cement, cement pastes, cement-based materials, clay mortars, composite modified asphalt binder, compressive strength, concrete, concrete durability, concrete properties, curing regime, detached decorative plasters, digital image correlation, durability, electrical conductivity, electrical resistivity, experimental verification, fiber spacing, filler effect, flexural Strength, flexural strength, foamed geopolymer, freeze-thaw cycles, glass fiber composites, glass microspheres, granulated blast furnace slag, graphite, gypsum binder, high calcium fly ash, high-performance fiber reinforced concrete, hook-end steel fiber, hydrated lime, hydration, inclination angle, injection grout, ladle furnace slag, light-materials, limestone, limestone filler, mass of specimens, microstructure, mix proportion design, mortar, multi-walled carbon nanotubes, nano-calcium oxide, nano-silica, optimization, packing density, paste, plaster, polyphosphoric acid, porosity, pullout load-slip curve, pullout test, reduced density, reinforcing lightweight concrete, rheological properties, self-compacting concrete (SCC), self-healing, self-sensing, setting process, siliceous fly ash, single wall carbon nanotubes, stability, steel fibers, storage stability, strength, structural properties, superabsorbent polymer, supplementary cementitious materials, surfactant, tensile behavior, ternary cements, the grey relational analysis, thermal insulation, thermal properties, ultrasonic technique, viscosity, water retention, wetting-drying
Abstract

Summary: This reprint includes research papers on different disciplines related to composites. It contains research related to new topics such as nanotubes, fibres, admixtures added in cement and concrete. Additionally self-healing and self-sensing issues are presented. Environmental, and thermal-related topics are also discussed. Studies related to consolidation topics and alkali activation of clays are included. This blend of traditional and modern building materials, all having a common ground, the use of new technologies for improving fresh and harden state properties, make this volume interesting.

7. Experimental Investigation on the Strength of Concrete by Partial Replacement of Fine Aggregates by Low-Density Shredded Polyethylene

Author

Shreyas, A. V., Venkateswaran, Sankaran, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Solari, Giovanni, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Das, Bibhuti Bhusan, editor, and Neithalath, Narayanan, editor

Published
2019
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9. A Review of the Mechanical Behavior of Substitution Materials in Self-healing Concrete

Author

Durga, Chereddy Sonali Sri, Ruben, N., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Solari, Giovanni, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Das, Bibhuti Bhusan, editor, and Neithalath, Narayanan, editor

Published
2019
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10. Beitrag zur Vorbemessung der Biegeverstärkung von Stahlbetonbauteilen mit Rechteckquerschnitt mittels aufgeklebten CFK-Lamellen

Author

Stiehl, Cevin

Subjects
Open Access, monograph, HTWK Leipzig, OA-HVerlag, bachelor thesis, reinforced concrete, carbon fiber, CFRP, bending strength, flexural load, concrete, Bachelorarbeit, Stahlbetonbau, CFK, Biegetragfähigkeit, Biegeverstärkung, Stahlbeton, Beton, thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering
Abstract

"Since 2012, the subsequent reinforcement of reinforced concrete components with bonded reinforcement has been regulated in a separate guideline. This includes the dimensioning of the adhesively bonded strips made of carbon fiber reinforced plastic (CFRP), which, in addition to the complex iterative bending design, have a very complex bonding behavior. For this purpose, the German Committee for Structural Concrete developed a model for the verification based on experimental evaluations, in which the occurring tensile forces are partly transferred into the component via intermediate elements (partial distances between flexural cracks). Simultaneously, simplified but more inaccurate verification formats were made available to reduce the complexity of the verification. For an early assessment of the use of bonded CFRP strips, different tools have been developed in this paper for reinforced concrete components with a rectangular cross-section depending on the different verification formats. For this purpose, the design parameters were considered separately for pure bending strength and bonding behavior. For a simple calculation, tables for the design with dimensionless coefficients were obtained by analogy with the reinforced concrete construction, with which the required cross-section area for the CFRP strips can be determined by means of a limited stretching from the simplified verification of the flexural load bearing capacity. For a more economical solution, the more precise verification of the force transmission on the intermediate elements was configured in an Excel workbook, because this results in an extraordinary iterative calculation effort.", Das nachträgliche Verstärken von Stahlbetonbauteilen mit geklebter Bewehrung ist seit 2012 in einer eigenen Richtlinie geregelt. Darin sind u.a. die erforderlichen Nachweise für aufgeklebte Lamellen aus kohlenstofffaserverstärktem Kunststoff (CFK) geregelt, welche neben der aufwendigen iterativen Biegebemessung ein sehr komplexes Verbundverhalten aufweisen. Dafür wurde vom Deutschen Ausschuss für Stahlbeton anhand von Versuchsauswertungen ein Modell zur Nachweisführung erarbeitet, wobei die auftretenden Zugkräfte zum Teil über Zwischenrisselemente (Teilstrecken zwischen Biegerissen) in das Bauteil übertragen werden. Aufgrund des Umfangs und der Komplexität der Nachweisführung wurden gleichzeitig vereinfachte, aber ungenauere Nachweisformate darin zur Verfügung gestellt. Um eine frühzeitige Abschätzung über den Einsatz von aufgeklebten CFK-Lamellen zu ermöglichen, wurden in dieser Arbeit unterschiedliche Hilfsmittel für Stahlbetonbauteile mit Rechteckquerschnitt in Abhängigkeit der unterschiedlichen Nachweisformate erarbeitet. Dazu wurden die Bemessungsgrundlagen getrennt nach reiner Biegetragfähigkeit und dem Verbundverhalten betrachtet. Für eine einfache Handrechnung ergaben sich analog zum Stahlbetonbau Bemessungstafeln mit dimensionslosen Beiwerten mit denen anhand einer Grenzdehnung aus dem vereinfachten Nachweis der Biegetragfähigkeit die erforderliche Lamellenfläche bestimmt werden kann. Für eine wirtschaftlichere Lösung wurde der genauere Nachweis der Lamellenkraftänderung am Zwischenrisselement in einer Excel-Arbeitsmappe konfiguriert, da hierbei ein außerordentlicher iterativer Berechnungsaufwand entsteht.

Published
2020
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