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基于活动性较弱或趋于稳定的地裂缝,以西安地区一个跨越地裂缝的建筑物为研究对象,从西安地区地裂缝的成因、分布入手,采用SAP2000有限元软件对实际工程结构进行线性和非线性分析,将地裂缝的活动量以初始位移的方式施加到不同工况的结构上,定量地分析了地裂缝的活动对跨于其上结构的不利影响,找出了该跨地裂缝结构的危险部位,给出了结构出现塑性铰的时间、位置和数量;最后结合分析的结果,提出了防治措施。
Based on the ground fissures with weak or stable activity, this paper takes a ground fissure building in Xi’an as the research object. Starting from the causes and distribution of ground fissures in Xi’an, using SAP2000 finite element software, In the nonlinear analysis, the amount of ground fissure activity is applied to structures with different initial displacements. The unfavorable influence of ground fissure activities on the structures is analyzed quantitatively to find out the effect of ground fissures The location, quantity and number of the plastic hinges appearing in the structure are given. Finally, according to the result of the analysis, some preventive measures are put forward.