罕遇地震矮塔斜拉桥双曲面球形减震支座与液体黏滞阻尼器联合应用研究  

Research on the Common Application of Hyperbolic Spherical Isolation Bearings and Liquid Viscous Dampers for Extradosed Cable-stayed Bridge under Rare Earthquakes

作　　者：全伟 于鸿铭 刘旭政[3] 王东升 QUAN Wei;YU Hongming;LIU Xuzheng;WANG Dongsheng(School of Civil Engineering and Architecture,Huangshan University,Huangshan 245041,China;Transportation Engineering School of Shenyang Jianzhu University,Shenyang 110168,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]黄山学院建筑工程学院,安徽黄山245041 [2]沈阳建筑大学交通工程学院,沈阳110168 [3]华东交通大学土木建筑学院,南昌330013 [4]河北工业大学土木与交通学院,天津300401

出　　处：《铁道标准设计》2021年第12期78-84,共7页Railway Standard Design

基　　金：国家自然科学基金项目(52068026);黄山学院校级科研项目(2020xhwh013);黄山学院校级人才启动项目(2019xkjq009)。

摘　　要：通过研究罕遇地震作用下,双曲面球形减隔震支座与液体黏滞阻尼器联合应用的减震机理和减震效果,为高铁矮塔斜拉桥减隔震设计提供依据。以某矮塔斜拉桥为背景,建立Midas有限元模型,单独使用双曲面球形减隔震支座和液体黏滞阻尼器,并将二者联合应用,分别进行减隔震装置的参数优化与减震效果对比分析。研究结果表明:单独使用双曲面球形支座和黏滞阻尼器时内力的最大减震率在85%左右,但会增加墩梁之间的相对位移,最大值为99%(除去固定支座);在墩底弯矩降低的前提下,联合使用双曲面球形减隔震支座和液体黏滞阻尼器会减小墩梁之间的相对位移,减小幅度为51%~69%。单独使用双曲面球形减隔震支座和液体黏滞阻尼器对全桥内力的减震率高,但增加了墩梁相对位移;双曲面球形减隔震支座与液体黏滞阻尼器联合应用,可在降低全桥内力响应的同时减小墩梁相对位移,在实际应用中优先推荐使用。In order to provide basis for the seismic isolation design of high-speed railway extradosed cable-stayed bridge,it is necessary to study the mechanism and effect of the combined application of hyperbolic spherical isolation supports and liquid viscous dampers under rare earthquakes.With reference to a railway extradosed cable-stayed bridge,the Midas finite element model is established,which uses hyperbolic spherical isolation supports and liquid viscous dampers separately and the two combined.The parameters of each device are optimized and the effects of shock absorption are compared.When the hyperbolic spherical isolation supports and liquid viscous dampers are used separately,the maximum internal force damping rate is about 85%,but the relative displacement between the piers and beams is increased to a maximum of 99%except for the fixed support.Under the premise of reducing the bending moment at the bottom of the pier,when the hyperbolic spherical isolation supports and liquid viscous dampers are used together,the relative displacement between the piers and beams is decreased by 51%~69%.The separate use of hyperbolic spherical isolation supports and liquid viscous dampers has a high damping rate for the internal force of the bridge,but it increases the relative displacement of piers and beams.The combined use of hyperbolic spherical isolation supports and liquid viscous dampers can decrease the relative displacement of the pier and beams while reducing the internal force response of the bridge,and its application should be prioritized.

关 键 词：高速铁路 矮塔斜拉桥 双曲面球形减隔震支座 液体黏滞阻尼器 梁-墩相对位移 减震性能 联合应用 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U448.13[交通运输工程—道路与铁道工程]