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为了研究剪力连接件在组合梁中的受力性能及计算方法,首先阐述了连接件在组合梁中主要是用来承受钢筋混凝土翼板与钢梁之间的纵向剪力,严格地说,它还能抵抗翼板与钢梁之间的掀起作用;在钢-混组合箱梁桥结构设计中,钢腹板与混凝土上、下翼板的连接是设计的关键环节,它直接关系到整个组合梁的承载能力;然后总结了普通PBL连接件、Twin-PBL连接件和S-PBL连接件的计算方法。重点对由普通PBL连接件改进的一种新型的PBL连接件的抗剪承载力进行了研究,分析了他们的结构特点和受力特征,为组合梁桥剪力件的设计提供参考。
In order to study the force-bearing performance and calculation method of shear connectors in composite beams, firstly, the connection members are mainly used to bear the longitudinal shear force between reinforced concrete flanges and steel beams in composite beams. To be exact, It can also resist the lifting effect between the wing and the steel beam; in the steel-concrete composite box girder bridge structure design, the connection between the steel web and the concrete upper and lower wings is the key link in the design, which is directly related to the whole Bearing capacity of the composite beam; and then summarizes the calculation method for ordinary PBL connectors, Twin-PBL connectors and S-PBL connectors. The research on the shear capacity of a new type of PBL connector improved by ordinary PBL connectors is emphatically studied. Their structural features and stress characteristics are analyzed, which provide references for the design of composite beam-bridge shear members.