悬索桥主缆型钢锚固件尺寸参数影响分析  

Parameter Analysis of Main Cable Steel Anchorage Structure of Suspension Bridge

作　　者：郑力之 贺耀北 李瑜 崔剑峰 王甜 ZHENG Lizhi;HE Yaobei;LI Yu;CUI Jianfeng;WANG Tian(Hunan Zhongnan Construction Group Co.,Ltd.,Changsha 410003,China;Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha 410200,China)

机构地区：[1]中南建设集团有限公司,长沙410003 [2]湖南省交通规划勘察设计院有限公司,长沙410200

出　　处：《交通科技》2023年第6期12-17,共6页Transportation Science & Technology

摘　　要：为研究大跨度悬索桥型钢锚固体系承载力影响参数、破坏机理、设计理论,文中以杭瑞高速洞庭湖大桥锚固体系为研究对象,通过ABAQUS有限元模拟,研究型钢锚固体系中前锚杆及后锚梁的尺寸参数对锚固能力的影响,分析锚体尺寸对于承载力的影响机理,结果表明,锚体水平尺寸对于结构承载力的影响较大;竖向尺寸对于结构承载力的影响较小,但对破坏面发展形态较为关键;锚固体系极限承载能力主要由破坏面的发展面积控制。To investigate the influencing parameters,failure mechanisms,and design theories of the bearing capacity of the steel anchorage system of large-span suspension bridges,the anchoring system of the Dongting Lake Bridge on the Hangrui Expressway was taken as the research object.Through ABAQUS finite element simulation,the influence of relevant dimensional parameters of the front anchor rod and the rear anchor beam in the steel anchorage system on the anchoring capacity was analyzed,and the influence mechanism of the anchor body size on the bearing capacity was researched.The following conclusions were drawn:the horizontal size of the anchor body has a greater influence on the structural bearing capacity;the vertical size has a smaller influence on the structural bearing capacity,but it is more critical for the development of the failure surface;and the ultimate bearing capacity of the anchor system is mainly controlled by the development area of the failure surface.

关 键 词：大跨悬索桥 型钢锚固体系 锚杆 锚梁 尺寸参数 

分 类 号：U443.5[建筑科学—桥梁与隧道工程] TU311.41[交通运输工程—道路与铁道工程]