【摘要】 本文研究了上海浦东机场(二期)候机楼在地震波为上海地表波的多点输入下的结构位移和轴力反应,并比较了该结构在地震波为El Centro波的一致输入下的结构位移和轴力反应值之间的差异。通过屋面空间结构有代表意义的节点位移和杆件轴力的计算结果比较,探讨了这些节点和杆件的相关物理量在地震多点输入下的变化规律,得出了一些有工程实践意义的结论:(1)在上海地表波和El Centro波一致水平输入下,无论结构的位移还是轴力反应均差别不大;2)多点地震输入所得的结构位移反应约为一致输入下的结构位移反应的1.1-1.5倍左右;(3)多点地震输入所得的结构位移反应约为一致输入下的结构位移反应的1.6倍左右。更多还原

【Abstract】 The difference between the seismic responses of displacement and axial force of Pudong Airport Terminal(Ⅱ) Shanghai obtained from uniform excitation(seismic wave: El Centro) and multi-support excitation(seismic wave: Shanghai ground wave)is studied.By comparing the responses of the displacement of the representative nodes and axial forces of members of the space structure roof,the changing rules of the respective physical variables of those nodes and members under the action effect of seismic multi-support excitation are studied.Some conclusions for engineering practice are drawn:(1) under horizontal seismic excitation of El Centro wave and Shanghai ground wave the difference of the responses of the displacement or axial forces of the structure is not large;(2) the responses of the displacement(by multi-support excitation) is 1.1-1.5 multiple to that by uniform excitation;(3) the responses of axial forces(by multi-support excitation) is about 1.6 multiple to that by uniform excitation.更多还原