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波形钢腹板PC组合箱梁抗扭性能试验*
王圣保
摘 要
王圣保
(哈尔滨理工大学建筑工程学院,哈尔滨150080)
 
摘要]通过试验的方法,研究波形钢腹板PC组合箱梁在偏心荷载作用下,挠度、横向位移、刚性扭转角、箱梁截面的翘曲应变、翘曲应力及波形钢腹板的附加剪应力的分布规律,以了解悬臂波形钢腹板PC组合箱梁在扭转作用下的力学性能。研究表明:波形钢腹板翘曲应变很小,可忽略不计;翘曲应力在底板上呈现明显的直线分布规律,且最大值出现在底板的角点处;波形钢腹板上的剪应力分布较均匀,附加剪应力在腹板上的分布也有类似的规律。
关键词]波形钢腹板;扭转;翘曲应力;畸变;横向位移;翘曲应变;偏心加载
中图分类号:TU391文献标识码:A文章编号:1002-848X(2012)09-0121-05
 
Experiment on torsion behaviors of pre-stressed concrete composite box girders with corrugated steel webs
Wang Shengbao
(College of Civil Engineering and Architecture, Harbin University of Science and Technology, Harbin 150080, China)
 
Abstract: In order to investigate mechanical properties of pre-stressed concrete composite box girders with corrugated steel webs under torsional loading, distribution of deflection,lateral displacement, rigid torsion angle, warp strain, warp stress, additional shear stress under eccentric loading were researched through the experiment. The research indicates that the warp strain of corrugated steel web is small. Warp stress of the pre-stressed concrete composite box girder is uniformly distributed on the bottom plate, and the maximum value is in the corner of the concrete bottom plate. Shear stress is uniformly distributed along the corrugated steel web, and the additional shear stress along the corrugated steel web has the similar distribution.
Keywords: corrugated steel web; torsion; warp stress; distortion; lateral displacement; warp strain; eccentric loading
*国家自然科学基金资助项目(50808058)。
作者简介:王圣保,讲师,Email:wangshengbao1974@126.com
 
参考文献
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