铰接斜板桥计算理论与荷载试验  

Calculation theory and load tests of the jointed skew slab bridge

作　　者：蒋翔 王琛 夏桂云[2] 

机构地区：[1]长沙先导公共设施投资建设有限公司工程部,湖南长沙410013 [2]长沙理工大学土木与建筑学院,湖南长沙410004

出　　处：《交通科学与工程》2015年第1期44-48,共5页Journal of Transport Science and Engineering

基　　金：长沙河西交通枢纽市政配套工程桥梁施工监控研究(SSJS2013125)

摘　　要：建立了单梁式斜交桥挠度和扭转角的计算公式,并以此公式为基础,给出了铰接斜交板桥荷载横向分布系数的计算方法,编制了计算程序。为解决斜交板桥纵向加载计算,给出了截面弯矩和扭矩影响线计算公式,分析了斜交板桥截面弯矩影响线的变化规律。以湖南省望城县金城大道新建工程八曲河中桥为工程背景,运用给出的计算理论,计算出各板荷载的横向分布系数。本研究还制定了试验检测方案,比较了试验检测结果与理论结果,两者得到的结果接近,证明该方法是正确的。Deflection and Rotation angel formula were established for the single span regular skew slab bridge.A jointed skew slab method was presented as a live distributing factor and key formula were derived.Based on this theory,a calculation code was compiled.Using theoretical formula,the change of moment influence lines with skew angels,flexure-torsion stiffness ratio and calculation positions was shown.Using Baqu River Bridge as the engineering background,live distributing factors were calculated and a testing scheme was decided.Testing results are compared with theoretical results,which agrees with each other well.The method is corrective.

关 键 词：斜交板桥 铰接板法 均布荷载 试验 

分 类 号：TU391[建筑科学—结构工程] U448[建筑科学—桥梁与隧道工程]