桥梁主梁风雨致静力试验研究  

RESEAREN ON THE WIND-RAIN INDUCED STATIC FORCE ON A BRIDGE DECK

作　　者：陶仕博[1,2] 辛大波[1] 欧进萍[1,3] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]黑龙江科技学院建筑工程学院,哈尔滨150027 [3]大连理工大学建设工程学部,辽宁大连116024

出　　处：《钢结构》2011年第5期23-25,共3页Steel Construction

基　　金：国家自然科学基金项目(50908069)

摘　　要：利用在大气边界层风洞中搭建的风雨联合作用试验系统,在不同风速和雨强组合作用下进行节段模型的静力三分力试验。通过分析不同雨强下节段模型的静力三分力系数,获取桥梁主梁断面在风雨联合作用下的静力特性。试验表明:随着雨强的增大,节段模型阻力系数增大,升力系数稍有变化,而扭矩系数基本不变,并进一步分析系数变化原因。An experimental study on the wind-rain induced static characteristics of a bridge deck was carried out in an atmosphere boundary layer wind tunnel. By analysing the changes in aerostatic forces under different rainfall intensities, the static characteristics of the bridge deck in wind-driven rain was obtained. The experimental results showed that rainfall can increase the drag force of a bridge deck and can change the lift force, but the rainfall had few effects on the pitch moment of a bridge deck. Furthermore, according to the conclusions obtained from the experimental results, some reasons for the three component forces change were analysed.

关 键 词：大跨桥梁 静力三分力 节段模型 风雨场 风洞试验 

分 类 号：U441[建筑科学—桥梁与隧道工程]