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Ayeldeen Mohamed Azzam Waseim Arab Mohamed G. 《Geotechnical and Geological Engineering》2022,40(4):1873-1885
Geotechnical and Geological Engineering - Urbanization and development in arid and semiarid have brought increased interest in the improvement of water sensitive soils susceptible to volume change.... 相似文献
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It is difficult to protect structures and foundation from collapse after an earthquake hit; however studies have been undertaken in order to limit future earthquake hazards. Therefore, the main notion of the present paper is to study an alternative technique to control the foundation structure deformation under seismic loading using in-filled trench with expanded polystyrene (EPS) geofoam. A series of plane strain two-dimension module for a 10-story building and subjected to different earthquakes are run using Plaxis 2D. The numerical analysis is primary concerned with studying the effect of using wave barrier of EPS geofoam adjacent to structure on improving the structure stability as a passive screening technique. The wave barrier geometry, sand density and earthquake acceleration are investigated. The results showed the effectiveness of such trench in controlling the lateral deformation and decreasing the angular distortion, β, of a structure. To get the positive effect of such barrier, it should be installed in dense sand with optimum geometry of b?=?0.25d and d?=?0.5B. The installation of wave barrier—with sufficient depth and width adjacent to structure—can significantly reduce the amplitude reduction ratio to as much as 10%. It is also found that the angular distortion, β, of the foundation is changed from 0.04 to 0.0018 due to barrier effect. The adopted technique can modify the building damage from severe to moderate and slight damage with lesser deformation. 相似文献
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