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采用时程分析方法对成都双流国际机场T2航站楼结构进行了多点多维地震反应分析,地震波波速从266m/s变化到533m/s,并与一致输入结果比较可知:考虑行波效应后,钢结构部分的多数杆件内力小于一致输入的,且行波效应影响系数多数小于1.2;沿地震波传播方向上的底层框架柱内力多数增大,而垂直于地震波传播方向上的柱内力多数减小;支承钢拱的钢柱轴力行波效应影响系数基本上小于1;支承钢拱的框架柱列行波效应影响系数呈现出两端大、中间小的规律;多点输入下的基底剪力小于一致输入下的,为多点输入下结构中各构件振动不同步所致,叠加为总地震力时往往相互抵消。
Multi-dimensional multi-dimensional seismic response analysis of T2 terminal structure of Chengdu Shuangliu International Airport is carried out by time-history analysis. The seismic wave velocity changes from 266m / s to 533m / s. Comparing with the consistent input results, The internal forces of most of the members in the steel structure are less than those of the same input, and the influence coefficients of the traveling wave effect are mostly less than 1.2. The internal forces of the bottom frame column along the seismic wave propagation direction mostly increase, while the internal forces perpendicular to the propagation direction of the seismic wave mostly decrease. The influence coefficient of traveling wave effect of the steel column supporting steel arch is almost less than 1; the effect coefficient of traveling wave effect of frame column supporting steel arch shows a big law and a small law at both ends; the shear force under the multi-point input is less than the same Under the input, under the multi-point input structure under the vibration of each component is not synchronized, superimposed as the total seismic force often offset each other.