系杆拱桥施工过程索力变化规律试验研究  

Experimental study on cable tension variation of tied arc bridge during construction process

作　　者：祁强[1] 张戎令[1,2] 胡锐鹏 王冲 QI Qiang;ZHANG Rongling;HU Ruipeng;WANG Chong(Key Laboratory of Road & Bridges and Underground Engineering of Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, China;National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control,Lanzhou Jiaotong University, Lanzhou 730070, China)

机构地区：[1]兰州交通大学甘肃省道路桥梁与地下工程重点实验室,甘肃兰州730070 [2]兰州交通大学道桥工程灾害防治技术国家地方联合工程实验室,甘肃兰州730070

出　　处：《铁道科学与工程学报》2017年第9期1893-1898,共6页Journal of Railway Science and Engineering

基　　金：青年人才托举工程资助项目(2015QNRC001);飞天学者特聘计划资助项目;陇原青年创新人才扶持计划资助项目;长江学者和创新团队发展计划滚动支持资助项目(IRT_15R29);甘肃省基础研究创新群体资助项目(145RJIA332);兰州交通大学优秀平台资助项目(201606)

摘　　要：为研究系杆拱桥在施工过程吊杆索力变化规律,依据兰新二线乌鲁木齐河特大桥1/16缩尺模型试验,针对系杆拱桥吊杆张拉过程进行模拟实验研究,对比常见的2种跳跃式张拉顺序,揭示系杆拱桥吊杆在张拉过程中索力变化规律,经过综合分析张拉方案2优于张拉方案1。同时建立该桥有限元模型,经对比分析得到一致的规律,对同类拱桥的设计和施工控制提供了可借鉴的试验依据。In order to study on tension variation of tied arch bridge in the construction process,basis on the1/16scale mode test of the Urumqi River Bridge in the second railway about Lanzhou to Xinjiang,the modelexperimental study is made about tensile process of tied arch bridge.Two kinds of suspender tensioning schemeare compared.The result show the tension variation of tied arch bridge in the construction process and that tensionscheme two is better than the tension scheme one.At the same time,the FEM numerical model of tied arc bridgeis established and its result is analyzed against the experimental data,which show the similar trend.Theconclusion could provide some valuable experimental reference for the design of the same type of arch bridge andits construction control.

关 键 词：系杆拱桥 吊杆索力 模型试验 有限元 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]