182 m下承式钢管混凝土刚架系杆拱桥抗震研究  

Seismic Study on 182 m through Tied Arch Bridge with Steel Tube Concrete Rigid Frame

作　　者：骆鹏 刘印华 LUO Peng;LIU Yinhua(Shenzhen Branch of China Nerin Engineering Co.,Ltd.,Shenzhen,Guangdong 518040,China;Shenzhen Qianhai Construction Investment Holding Group Co.,Ltd.,Shenzhen,Guangdong 518066,China)

机构地区：[1]中国瑞林工程技术股份有限公司深圳分公司,广东深圳518040 [2]深圳市前海建设投资控股集团有限公司,广东深圳518066

出　　处：《有色冶金设计与研究》2025年第1期46-51,共6页Nonferrous Metals Engineering & Research

摘　　要：以深圳沙井大桥主跨182 m下承式钢管混凝土刚架系杆拱桥为研究对象,系统地开展了抗震设计方法、抗震设防标准、抗震概念设计、抗震计算及抗震措施研究。通过多振型反应谱法与时程法分析,对桥梁进行结构地震反应分析,明确了桥面体系位移响应超限问题,优选阻尼约束体系作为解决方案,显著降低地震位移并控制墩底弯矩。抗震措施包括:梁端纵横向设置橡胶垫块、引桥衔接部位增设缓冲垫块、桥墩全高箍筋加密及节点锚固强化等。研究表明,该桥通过轻量化桥面体系与减隔震技术,结合精细化构造设计,实现了设防目标,抗震验算结果均满足规范要求。Taking Shenzhen Shajing Bridge as the research object,a through tied arch bridge with a main span of 182 m and steel tube concrete rigid frame,the paper systematically describes seismic design methods,seismic fortification criterion,seismic conceptual design,seismic calculations and seismic measures.The structural seismic response of the bridge is analyzed by means of the multi-modal response spectrum and time history method,which clarifies the over-limit of the displacement response of the bridge deck system and selects the damping constraint system as a solution to significantly reduce seismic displacement and control the bending moment at the bottom of the pier.Seismic measures include:setting rubber pads in the longitudinal and transverse directions at the girder ends,adding buffer pads at the connection points of the approach bridge,increasing the reinforcement of the full height stirrups at the bridge piers,and strengthening the anchoring parts.The study shows that the bridge has achieved its fortification goal through a lightweight deck system and seismic isolation technology and refined structural design.The results of the seismic calculations all meet the code requirements.

关 键 词：钢管混凝土拱桥 抗震设计 阻尼约束体系 抗震设防标准 抗震构造措施 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U442.55[交通运输工程—道路与铁道工程]