地铁车站双槽钢型钢混凝土转换梁抗剪承载力研究
Study on the shear bearing capacity of double-channel steel reinforced concrete transfer beams in subway station
为研究地铁车站双槽钢型钢混凝土转换梁的抗剪承载力，对该类转换梁进行了抗剪承载力试验研究，获得了该类转换梁的破坏特征、荷载-位移曲线和钢材的应变发展规律，研究了剪跨比和配钢率对转换梁抗剪承载力的影响规律。研究表明，转换梁试件在集中荷载作用下主要呈现剪切破环形态，其受剪承载力主要由型钢腹板、箍筋及混凝土承担；增大型钢配钢率对增强转换梁的抗剪承载力是有利的。结合该类转换梁的受剪破坏特征，分别提出基于拉-压杆模型和叠加原理的转换梁抗剪承载力计算方法，计算表明2种方法均可以有效预测转换梁的抗剪承载能力，其结果可为该转换梁的应用提供理论参考。
建筑结构
地铁车站结构双槽钢型钢混凝土转换梁抗剪承载力计算方法
马辉.地铁车站双槽钢型钢混凝土转换梁抗剪承载力研究[EB/OL].(2025-08-24)[2025-10-09].https://chinaxiv.org/abs/202508.00339.点此复制
To investigate the shear bearing capacity of double-channel steel reinforced concrete transfer beams (CSRCTB) in subway station, the experimental research on the shear bearing capacity of the scaled specimens for the double-channel steel reinforced concrete transfer beams were executed in this paper. The failure process and characteristics, load-displacement curves and load-strain curves of transfer beams were obtained, the effects of shear span ratio and channel steel ratio on the shear bearing capacity of transfer beams were analyzed in detail. The research results showed that the transfer beams had a typical shear failure under the concentrated loads and the shear bearing capacity is mainly borne by the steel web, stirrups, and concrete. In addition, improving the profile steel ratio of double channel steel can contribute to the shear resistance of transfer beams. Based on the stress characteristics of transfer beams, the calculation methods on the shear capacity of transfer beams based on the strut and tie model and superposition principle were proposed respectively. The calculation results indicated that two methods are effective in predicting the shear bearing capacity of the transfer beam, which can provide a reference for the application of this type of transfer beams.
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