李海旺¹，王志平¹，杜雷鸣²
(1 太原理工大学建筑与土木工程学院，太原030024; 2 山西工程职业技术学院，太原030009)

[摘要] 以84m跨度的单榀钢管拱桁架为研究对象，考察了其在水平行波效应作用下的地震反应，计算结果表明，行波效应使杆件轴力响应最值或者变大或者变小，各杆件轴力响应最值出现在不同的视波速情况下。分析结构在地震激励下的杆件轴力响应，有必要多选几种波速计算，取其最不利结果。
[关键词] 拱桁架；地震反应；行波效应；非线性

Nonlinear earthquake response analysis of single steel tubular arch truss under travelling wave effect
LiHaiwang¹, WangZhiping¹, Du Leiming²
(1The Architecture and Civil Engineering Department of Taiyuan University of Technology ,Taiyuan 030024, China; 2 Shanxi Engineering Technical College, Taiyuan 030009, China)

Abstract: Selecting sing steel tubular arch truss as the research object, the paper investigates the horizontal wave passage effect on the seismic responses of the structure. The arch truss analyzed is assumed to cover 84 meters. The results show that the maximal value of bars axial force are increased or decreased, and they are appeared not at the same velocity So, analyses the axial response of bars need to multiple count under some different velocities and select the worst result.
Keywords: arch truss, seismic behavior, wave passage effect, nonlinear