地铁车站双槽钢型钢混凝土转换梁抗剪承载力研究

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中图分类号：TU398 文献标志码：A 文章编号：1000-4939（2025）04-0783-09

Abstract：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 forthe 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 effcts 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 borme 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 efective in predicting the shear bearing capacity of the transfer beam，which can provide a reference for the application of this type of transfer beams.

Key words： subway station structure； double-channel steel; steel reinforced concrete； transfer beam; shear bearing capacity；computing method

随着我国城市化的快速发展，地铁交通和城市桥架建设日新月异，同时交通轨道拥堵和交通资源相互干扰等问题也逐渐显露出来，传统轨道交通发展模式已经不能满足日益加快的城市化发展进程[1-6]。（剩余11982字）