斜交桥梁平转扭曲效应分析
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摘要
以哈尔滨松北某斜交桥方案为例,对斜交桥在竖向荷载下的平转扭曲现象进行分析。通过不同刚度下平转趋势的对比,探索此种现象的影响因素。研究结果表明:在常规竖向荷载带来结构翘曲变形的同时,斜交桥梁仍会受桥梁纵横向刚度大小及比例的影响,各自产生相应的平转效应,为斜交桥梁的设计提供参考。
Taking a skew bridge design plan in Songbei of Harbin for example,it was analysed the phenomenon of flat turn and torsion under vertical load.Several influencing factors were researched by comparing the turning trend with different stiffness.The results shows that with the warpage of the structure under common vertical load,skew bridges will generate corresponding effect of flat turn that influenced by the value and proportion of longitudinal and transverse stiffness,which provides a certain degree of reference for the design and construction of skew bridges.
Taking a skew bridge design plan in Songbei of Harbin for example,it was analysed the phenomenon of flat turn and torsion under vertical load.Several influencing factors were researched by comparing the turning trend with different stiffness.The results shows that with the warpage of the structure under common vertical load,skew bridges will generate corresponding effect of flat turn that influenced by the value and proportion of longitudinal and transverse stiffness,which provides a certain degree of reference for the design and construction of skew bridges.
引文
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[2]徐东阳.斜交桥斜交角度对支座反力的影响分析[J].山西建筑,2010,36(16):301-302.
[3]罗婧文,胡建新,唐光武,等.斜交桥震害特点与抗震设计初探[J].公路交通技术,2012(2):44-47,51.
[4]卢明奇,杨庆山,李英勇.地震作用下斜交连续梁桥碰撞效应分析[J].中国矿业大学学报,2012(2):289-292,326.
[5]何健,叶爱君.连续斜交梁桥地震下碰撞效应分析[J].中南大学学报:自然科学版,2012(4):1475-1481.
[6]卢明奇,杨庆山,李英勇,等.斜度对斜交桥地震作用下的扭转效应影响[J].哈尔滨工程大学学报,2012,33(2):155-159
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