SEISMIC ANALYSIS OF LONG-SPAN CONNECTED STRUCTURES UNDER MULTI-SUPPORT AND MULTI-DIMENSIONAL EARTHQUAKE EXCITATIONS
Seismic response of long-span connected structure under multi-dimensional and multi-support excitation is investigated. Algorithms for seismic analysis of long-span connected structure under multidimensional and multi-support excitation are first established, and the effect of different earthquake components and wave passage effect are analyzed. And then numerical simulation is carried out on a long-span connected structure under onedimensional and three-dimensional, uniform and travelling wave excitations. The results show that seismic response will be increased if multidimensional earthquake excitation was considered; Wave-passage effect will greatly amplify the seismic responses of vertical earthquake components; the seismic responses of different elements can either be increased or decreased if wave passage effect was considered, and great influence of wave passage effect was noticed for braces near connections between the main tower and corridor; furthermore, the dominant internal force of the corridor structure may be increased by 14.69% under travelling wave excitation. Therefore, it is necessary for a seismic design of long-span connected structure to take into account multi-dimensional and multi-support earthquake excitations.
Wei Lin Shanghong Chen Pengyun Huang
School of Civil Engineering,Fuzhou University,Fuzhou 350009,P.R.China
国际会议
厦门
英文
640-645
2011-10-28（万方平台首次上网日期，不代表论文的发表时间）