大跨度三塔自锚式悬索桥横向减震体系的研究  

Research on Transverse Damping System of Large Span Three-tower Self-anchored Suspension Bridge

作　　者：李盘山 陈张伟 周宁 欧光鲲 刘春香 王冬 LI Pan-shan;CHEN Zhang-wei;ZHOU Ning;OU Guang-kun;LIU Chun-xiang;WANG Dong(Shandong Yifangda Construction Project Management Co.Ltd.,Jinan 250000,China;Shanghai Municipal Engineering Design Institute(Group)Co.Ltd.,Shanghai 200092,China;Jinan City Construction Group Co.Ltd.,Jinan 250000,China)

机构地区：[1]山东易方达建设项目管理有限公司,济南市250000 [2]上海市政工程设计研究总院(集团)有限公司,上海市200092 [3]济南城市建设集团有限公司,济南市250000

出　　处：《公路》2024年第8期49-53,共5页Highway

摘　　要：以在建某悬索桥为工程背景,采用大型有限元软件SAP2000建立全桥三维有限元杆系模型,研究滑动支座+钢阻尼器的横向组合减震体系的减震特性,通过分析优化选取恰当的钢阻尼器参数进行数值模拟分析。与横向固定约束体系对比,本研究给出的横向组合减震体系能显著减小各桥墩和桥塔基础的地震需求,同时能不同程度地减小各桥墩和桥塔关键截面的剪力和弯矩,并能够有效地控制墩、梁的相对位移。因此,本研究提出的横向组合约束体系是较为合理的,可为同类型桥梁的减震提供借鉴参考。Taking a suspension bridge under construction as the engineering background,a three-dimensional finite element model of the whole bridge is established by using the large-scale finite element calculation software SAP2000.The damping characteristics of the lateral combined damping system of sliding bearing + steel damper are studied.The appropriate steel damper parameters are selected for numerical simulation analysis.Compared with the lateral fixed constraint system,the lateral combined damping system given in this paper can significantly reduce the seismic demand of each pier and tower foundation,and can reduce the shear force and bending moment of the key sections of each pier and tower to different degrees,and can effectively control the relative displacement of piers and beams.Therefore,the transverse combined constraint system proposed in this paper is more reasonable,which can provide reference for the shock absorption of the same type of bridge.

关 键 词：悬索桥 钢阻尼器 横向组合减震体系 有限元分析 

分 类 号：U441.3[建筑科学—桥梁与隧道工程] U443.5[交通运输工程—道路与铁道工程]