建筑结构学报2011，Vol.32Issue(5)：125-134,10.
基于软化拉-压杆模型的钢筋混凝土框架节点受剪分析
Shear strength of reinforced concrete frame joints using softened strut and tie model
摘要
Abstract
The softened strut and tie model is a new simplified method which originates from the classical truss theory, and can be used for determining the shear strength of discontinuity regions failed in diagonal compressions of reinforced concrete strut.An analytical model of the equivalent core of frame joints including interior joints with different depth beams of different depths under the combined action of axial load and shear was established, the softened strut and tie model was used for the shear analysis of reinforced concrete frame joints.In addition, a simplified formula for calculating the shear strength of the equivalent core of frame joint was proposed.Furthermore, the suggested analytical model was verified using 110 test data of reinforced concrete beam-column joints.Good agreement between test results and prediction results was achieved with an average ratio of test results to results of 1.169 and a variance of 0.208.Comparing with the semi-empirical formulas of joint shear strength suggested by the current concrete structures design code, the softened strut and tie model has definite mechanical model and can reasonably reveal failure mechanism of beam-column joint.关键词
钢筋混凝土框架结构/节点/软化拉-压杆模型/受剪承载力分类
建筑与水利引用本文复制引用
邢国华,刘伯权,吴涛..基于软化拉-压杆模型的钢筋混凝土框架节点受剪分析[J].建筑结构学报,2011,32(5):125-134,10.基金项目
国家自然科学基金项目(50068004,51078037),教育部高校博士点基金项目(20100205110010),陕西省自然科学基金项目(2010JM7002),中央高校科研业务费资助项目(CHD2010JC005). （50068004,51078037）
