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本文结合国家某重点建设项目工程对钢一混凝土组合梁混凝土翼缘板的纵向抗剪进行了试验研究。根据8根两点对称集中加载试验架在静载作用下的试验结果，分析了组合梁纵向开裂的原因及主要影响因素，建立了组合梁纵向抗剪计算模型和计算公式，对于组合梁纵向抗剪计算和横向钢筋设计具有实用参考价值。
In this paper, a longitudinal shear test of a concrete-concrete composite beam with steel-concrete composite beams is studied in conjunction with a national key construction project. Based on the test results of 8 two-point symmetric concentrated loading test frames under static load, the causes of longitudinal cracking of composite beams and the main influencing factors were analyzed. The longitudinal shear calculation model and calculation formula of composite beams were established. Shear calculation and transverse reinforcement design have practical reference value.