（1 中冶建筑研究总院有限公司， 北京 100088； 2 深圳千典建筑结构设计事务所有限公司， 深圳 518057； 3 西安建筑科技大学土木工程学院， 西安 710055）

［摘要］以桁架-拱为基本模型，分析了弯矩、剪力及轴力对构件受剪极限承载力的影响。在满足下限定理的条件下，建立了反复荷载作用下型钢混凝土构件受剪粘结破坏模型，并给出相应的受剪承载力计算公式。最后用相关文献中的试验数据对模型和计算公式进行了验证。结果表明，计算模型和公式与试验吻合较好且偏于安全。

［关键词］抗震性能； 受剪承载力； 桁架模型； 组合结构； 钢骨混凝土； 下限定理

中图分类号：TU398, TU312文献标识码：A文章编号：1002-848X(2020)10-0059-08

Model analysis of shear capacity for steel reinforced concrete columns under repeated loading

BAI Ligeng1, LIU Weiya2, JIANG Weishan3

(1 Centeral Research Institute of Building and Construction Co., Ltd., MCC, Beijing 100088, China;2 Classical Architecture and Structure Design Co., Ltd., Shenzhen 518057, China; 3 School of Civil Engineering， Xi′an University of Architecture and Technology, Xi′an 710055, China)

Abstract:Taking the truss-arch as the basic model, the effects of bending moment, shear force and axial force on the ultimate bearing capacity of the members were analyzed. Under the condition of satisfying the lower limit theorem, a shear bond failure model of steel reinforced concrete members under cyclic loading was established, and the corresponding formula for calculating the shear capacity was given. Finally, the model and calculation formulas were verified with experimental data in related literatures. The results show that the calculation models and formulas are in good agreement with the tests and are more secure.

Keywords:seismic performance; shear capacity; truss model; composite structure; steel reinforced concrete; lower limit theorem

作者简介：白力更，硕士，教授级高级工程师，Email:Bai_lg@sina.com。