青岛胶东国际机场航站楼非一致激励地震响应分析

Analysis of terminal building of Qingdao Jiaodong International Airport under non-uniform seismic excitation

青岛胶东国际机场航站楼平面长达1 090m,结构设计应考虑非一致地震激励的影响。航站楼大厅结构行波效应分析表明,网架杆件的轴力行波效应较小;底层框架柱内力行波效应最大,行波效应系数的分布范围较广,随着楼层增加逐渐减小;大多数柱的内力均小于一致激励的结果,超载柱的行波效应系数多集中于1.0~1.25区间;结构尽端、分缝处、平面开大洞区域边界的行波效应显著;结构平面变窄的区域,其尽端框架柱行波效应显著,其承载力和延性应有针对性的提高。

The effect of non-uniform seismic excitation should be considered in structural design of terminal building of Qingdao Jiaodong International Airport owing to its maximum length of 1 090 m. The analysis of main hall indicates that the wave-passage effect of the axial force of roof truss member is relatively minor,while the maximum effect and distribution is found in the first storey columns and decrease with storey going up. The forces of most columns under non-uniform excitation are less than that under uniform excitation,and the wave-passage effect coefficient of over-load columns is concentrated between 1. 0 ~ 1. 25. Major effect is found in the columns near the edge,structural gap,large openings,and areas with diminishing plane width. These columns should be designed with larger capacity and ductility.