【摘要】 由于自然地质作用和人为活动影响,西安出现了严重的地裂缝和地面沉降灾害。基于活动性较弱或趋于稳定的地裂缝,从西安地区裂缝的成因、分布入手,以一个实际工程案例为背景,采用ETABS有限元软件,建立原结构的三维有限元分析模型,依据上盘地裂缝影响区20m范围内的沉降观测数据,对一个18层剪力墙结构模型作为研究,对在影响区内不同的距离对结构的变形进行了分析和对比,对确定合理的安全避让距离提供了一定的理论依据。更多还原

【Abstract】 Severe land fractures and subsidence have occurred in Xi’an due to geo-process and human activities.From the cause and distribution of ground fissure failure mechanism,destroy mode and preventive countermeasures were studied.Finite element software ETABS was used to set up a 3D model of the structure.Identify its using the model and the settlement observation data of the area of coverage of ground fracture within 20 m.It was studied a 18 floors shear wall structure.It was analysed and compared the value change of internal force and distortion,which supplied theory gist for getting reasonable required secure distance.更多还原