【摘要】 地铁车站等地下结构的建设,必然会引起场地土层以及临近建筑物的地震动力响应发生变化.为研究此种影响,以某典型地下车站结构为研究对象,引入了土体的非线性本构模型,同时考虑了结构与土接触面特性和地基无限域的影响.计算结果表明:由于地下结构的存在,地表一定范围内的地震动设计参数被显著放大;临近地表建筑的位移响应、框架柱剪力响应也均被显著放大.建议在地铁等地下工程的规划和设计时考虑工程建设后对地表设计地震动的影响.更多还原

【Abstract】 From the view point of seismic design,the existence of underground structures,such as subway stations,will greatly affect the seismic response of the ground and the buildings which are adjacent to the underground structures.In order to study this kind of effect,a typical underground station is selected,and a hysteretic nonlinear soil constitutive model is used for the analysis.The interaction finite element models take into account the contact surface characteristics of the structure and soil and the impact of foundation infinite domain.The analytical results show that the design parameters of ground motion in a certain range of site are significantly enlarged due to the existence of underground stations,and displacement response and frame column shear force response of ground buildings are apparently amplified.It is suggested that the effect of underground structures on ground motion is taken into consideration when the underground structures are planned and designed.更多还原