地震工程学报2018，Vol.40Issue(1)：26-31,6.DOI:10.3969/j.issn.1000-0844.2018.01.026
大跨度桥梁结构多级地震响应研究
Study on the Multistage Seismic Response of Long-span Bridge Structures
摘要
Abstract
As a public facility,the seismic performance of long-span bridges has been frequently studied.The seismic excitations that are inputted on the supports of long-span bridge structures are different under earthquakes;consequently,the responses of bridge structures under multi-stage earthquakes are different.This research analyzes the influence of the radiation wave motion around a bridge pier on the bridge structure under the action of a multilevel earthquake and dis-cusses the pier-water coupling boundary of long-span bridges.Based on the response spectrum theory,the maximum seismic force endured by the long-span bridge structure is calculated,and the multilevel seismic response curve of the structure is obtained.Furthermore,taking a six-span bridge as an example,this research analyzes the response time histories of displacement,sheer force,and bending moment of the bridge under multistage earthquakes and presents some effec-tive conclusions.关键词
大跨度/桥梁/结构/多级/地震响应Key words
long span/bridge/structure/multistage/seismic response分类
天文与地球科学引用本文复制引用
何江,王玉振..大跨度桥梁结构多级地震响应研究[J].地震工程学报,2018,40(1):26-31,6.基金项目
河南省高等教育教学改革研究与实践项目(2017SJGLX665) （2017SJGLX665）
