高低拱梁拱组合体系桥动力特性及地震响应分析  

Analysis on the Dynamic Characteristics and Seismic Response of High and Low Arch Beam-Arch Combination System Bridge

作　　者：唐杨 王国炜 张丽 刘智 亓兴军[4] 刘佳杰 TANG Yang;WANG Guo-wei;ZHANG Li;LIU Zhi;QI Xing-jun;LIU Jia-jie(Countryside Highway Administration Bureau of Wufeng Tujia Autonomous County,Yichang 443413,China;Jinan Hualu Zhongjiao Highway Design Co.,Ltd.,Jinan 250101,China;Shandong Jinqu Design Consulting Group Co.,Ltd.,Jinan 250014,China;Shandong Jianzhu University,Jinan,250101,China;Beijing Municipal Road and Bridge Group Co.,Ltd.,Beijing 100045,China)

机构地区：[1]五峰土家族自治县农村公路管理所,湖北宜昌443413 [2]济南华鲁中交公路设计有限公司,山东济南250101 [3]山东金衢设计咨询集团有限公司,山东济南250014 [4]山东建筑大学,山东济南250101 [5]北京市政路桥股份有限公司,北京100045

出　　处：《浙江交通职业技术学院学报》2023年第4期1-6,12,共7页Journal of Zhejiang Institute of Communications

基　　金：山东省交通运输厅科技计划项目(2022B06);山东省企业技术创新项目(202250101726)。

摘　　要：为研究高低拱梁拱组合体系桥的动力特性和地震响应,以重庆市开州区的寨子坪大桥为工程背景,基于Midas Civil建立空间有限元模型。通过特征值分析和反应谱分析,得到结论:高低拱梁拱组合体系桥整体结构较为柔软,对横向振动和竖向振动较为敏感;相邻振型的频率较为相近,发生振型耦合的几率较大;在E1地震作用下,该桥的整体结构尚处于弹性范围内,能够满足抗震要求。In order to study the dynamic characteristics and seismic response of the high and low arch-beam arch combination system bridge,with the Zhaiziping Bridge in Kaixian County,Chongqing City as the engineering back⁃ground,the space finite element model was established based on Midas Civil.Through eigenvalue analysis and re⁃sponse spectrum analysis,the conclusions can be obtained as followed.The high and low arch beam-arch combi⁃nation system bridge is relatively soft as a whole and sensitive to lateral vibration and vertical vibration.The fre⁃quencies of adjacent modes are relatively similar,and the probability of mode coupling is great.Under the action of the E1 earthquake,the overall structure of the bridge is still within the elastic range,which can meet the seismic requirements.

关 键 词：公路桥梁 梁拱组合体系 动力特性 反应谱分析 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]