【摘要】 本文以上海典型的双层地铁站上方的框架结构为例,讨论了行波效应和地下结构对地表建筑物抗震设计的影响。首先计算得到重力荷载作用下梁柱的内力值,然后考虑水平地震和竖向地震共同作用的情况,将不同地震波分量作用下梁柱的地震反应和静力反应进行组合,得到框架梁柱的抗震设计值。通过比较不同地震波输入模式下梁柱抗震设计值的差异,分析了行波效应对结构抗震设计的影响;通过比较无地下结构和有地下结构时梁柱抗震设计值的差异,分析了地下结构对结构抗震设计的影响。研究结果表明:行波效应和地下结构对该框架结构柱的影响可以不用考虑,但是对部分框架梁的抗震设计值有所增加,特别是对部分梁中轴力的增大效应较大,所以在地表建筑物的抗震设计中考虑行波效应和地下结构的影响是有必要的。更多还原

【Abstract】 Based on a typical subway station in Shanghai and its adjacent building structures,this paper discussed the influence of wave traveling effect and underground structures on adjacent building structures.First,the static response of beams and columns under gravity load is calculated.Then the seismic response under horizontal and vertical seismic exitation is analyzed.Therefore the seismic design values of the structure is obtained by combining the static reponse and the seismic response.The influence of wave traveling effect is analyzed by comparing the seismic design values under different seismic excitation types.The influence of underground structure effect is analyzed by comparing the seismic design values of the building structures with and without a underground structure.The research results show that the influence of wave traveling effect and underground structure effect is not significant on columns,but the seismic design values of some beams increase,especially to axial force of some beams,such the influence of wave traveling effect and underground structures on seismic design of adjacent building structures should be considered.更多还原