单塔悬索—刚构—连续梁组合桥抗震性能分析

英文篇名：Study on Seismic Behavior of the Rigid Frame Continuous Beams Combination Bridge with Single Tower Suspension Cable
中文刊名：中国市政工程
英文刊名：China Municipal Engineering
作者：黄文雄 ; 杨宏印 ; 谭利英 ; 张海龙
英文作者：HUANG Wen-xiong1 ; 2 ; YANG Hong-yin1 ; TAN Li-ying3 ; ZHANG Hai-long1 (1.School of Civil Engineering and Mechanics ; Huazhong University of Science and Technology ; Wuhan 430074 ; China ; 2.School of Urban Construction ; Yangtze University ; Jingzhou 434023 ; China ; 3.Jingzhou City Planning & Design Institute ; Jingzhou 434000 ; China)
中文关键词：组合体系桥 ; 抗震性能 ; 地震响应 ; 反应谱分析法 ; 时程分析法
英文关键词：combination bridge ; aseismic behavior ; seismic response ; response spectrum method ; time-history analysis method
出版日期：2010-06-25
机构：华中科技大学土木工程与力学学院;长江大学城市建设学院;荆州城市规划设计研究院;
年：2010
期：03
出版单位：中国市政工程

摘要

以乌鲁木齐市乌鲁木齐北一路桥为研究对象。根据该桥的结构特点,采用两阶段分析法的思路,建立了桥梁空间有限元分析模型,分析了该桥的动力性能;采用反应谱分析法、时程分析法计算了桥梁结构在设计反应谱、3条典型地震波作用下的地震响应,较为全面地分析了该桥的抗震性能。计算结果表明:该桥整体刚度较大,桥梁振动以顺桥向振动形式为主;2号主墩墩底截面受力最为不利,为全桥抗震设计的控制截面;塔柱在地震作用下塔底面外内力响应、塔顶面外位移响应较大,在设计时要引起足够重视。
According to the structure characteristics of the Urumchi North-one-Road bridge,the two-stage method is applied in this research.The dynamic behavior of the bridge is analyzed based on the 3D finite element analysis model,and the seismic response under the design response spectrum and 3 typical seismic waves is analyzed by response spectrum method and time-history analysis method.The aseismic behavior of the bridge is analyzed completely.The calculation result shows that the integral stiffness of the bridge is large and the axial direction vibration mode is the main vibration modes.The bottom section of the second main pier is the worst location for bearing load,and it is the major control section for the aseismic design.According to the bridge tower,the out-of-plane mechanical response of bottom section and the out-of-plane displacement response of the top section are very large and it must be paid much attention to in the design.

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