轨道交通曲线连续钢——混组合梁抗剪分析  

Shear Analysis of Curved Continuous Steel/Concrete Composite Beams Adopted in Urban Rail Transit

作　　者：阙孜[1] 

机构地区：[1]北京城建设计研究总院有限责任公司,北京100037

出　　处：《都市快轨交通》2013年第1期81-86,共6页Urban Rapid Rail Transit

基　　金：北京市科技计划项目(D101100049610001)

摘　　要：论述在钢混组合梁计算中,规范中按实体梁横向弯曲剪应力计算,没有扭转剪应力计算的规定。曲线组合梁的扭矩较大,讨论是否需要考虑扭转剪应力的影响。结合工程实例,计算分析自由扭转剪应力,按闭口薄壁构件和实体梁分别计算弯曲剪应力,并对计算结果进行对比分析,提出合理的计算方法。In the steel/concrete composite beam calculation, according to the specifications, shear stresses are calculated for solid beam transverse bending, without torsional shear stress. For curved composite beams torques are large, it is necessary to study whether torsional shear stress effect should be taken into account. Considering an engineering example, the free torsional shear stresses are calculated; bending shear stresses are respectively calculated for a closed thin - walled member and a solid beam, and the calculation results were compared and analyzed for the formulation of a reasonable comnutation method.

关 键 词：城市轨道交通 连续钢—混组合梁 弯曲剪应力 扭转剪应力 闭口薄壁构件 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]