双箱钢-混凝土连续曲线组合梁受力性能试验研究  

EXPERIMENTAL RESEARCH ON THE MECHANICAL PERFORMANCES OF DOUBLE-BOX STEEL-CONCRETE CONTINUOUS CURVED COMPOSITE GIRDERS

作　　者：袁晓静[1] 奚兵 赵伟[3] 刘凡[1] 郝皓 黄海兵 YUAN Xiaojing;XI Bing;ZHAO Wei;LIU Fan;HAO Hao;HUANG Haibing(Key Laboratory of Structural Engineering of Jiangsu Province,Suzhou University of Science and Technology,Suzhou 215011,China;Zhejiang Communications Construction Group Limited Company,Hangzhou 310051,China;Bridge and Tunnel Engineering Research Institute,Zhejiang Institute of Communications,Hangzhou 311112,China)

机构地区：[1]江苏省结构工程重点实验室(苏州科技大学),江苏苏州215011 [2]浙江交工集团股份有限公司,杭州310051 [3]浙江交通职业技术学院桥隧工程研究所,杭州311112

出　　处：《工业建筑》2020年第8期154-159,共6页Industrial Construction

基　　金：浙江省交通运输厅科技项目(2018042)。

摘　　要：为研究连续曲线组合梁桥在运营期的力学性能,以直埠南枢纽C匝道实际工程为背景,考虑横隔板连接方式和曲线半径的影响,设计了3根相较于实际案例缩尺比例为1∶10的连续曲线组合梁,进行4种运营工况下的静载试验,得到了试件在各工况下的荷载-挠度曲线、控制截面的应变沿梁高与横向的分布规律等。经对比研究发现:在4种运营工况下,对跨中挠度来说,荷载分布在外侧钢梁处为最不利工况;组合梁偏载系数约为1.30;曲线半径对曲线组合梁的受力性能有一定影响,横隔板的连接方式对其影响不大。In order to study the mechanical properties of continuous curved composite girder bridges during operation,taking the actual project of ramp C of Zhibu South Junction as the background,considering the influence of the connection mode of the diaphragms and the curve radius,three continuous curved composite girders with a scale reduction ratio of 1 ∶10 compared with the actual case were designed.Static load tests under four operating conditions were carried out.The load-deflection curves and the distribution law of the control section’s strain along the height and transverse direction under the working conditions were obtained.A comparative study found that under the four operating conditions the partial load of the outer box was the most disadvantaged for cross-center deflection.The eccentric load factor of the composite girder was around 1.30.The curve radius had a certain effect on the mechanical properties of the curved composite girder,and the connection method of the diaphragms had little effect on it.

关 键 词：钢-混凝土连续曲线组合梁 弯扭性能 横隔板连接方式 曲线半径 

分 类 号：TU398.9[建筑科学—结构工程]