中美规范钢筋混凝土纯扭构件承载力分析对比  

Comparison for torsional strength of reinforced concrete member under pure torsion between Chinese and American Codes

作　　者：张红霞[1] 刘海峰[1] 

机构地区：[1]青海建筑职业技术学院,青海西宁810012

出　　处：《四川建筑科学研究》2014年第5期21-24,共4页Sichuan Building Science

摘　　要：基于试验结果,针对钢筋混凝土纯扭构件,从开裂扭矩、受扭承载力、截面限制条件及箍筋最小配筋率等方面,对我国GB50010—2010《混凝土结构设计规范》和美国ACI318M-11规范进行了分析对比。结果表明,在箍筋配筋率范围内,美国规范安全储备高于我国规范。我国规范中配筋强度比及箍筋配筋率对受扭承载力的影响规律存在偏差,建议规范对计算公式做进一步完善,并对纯扭构件的限制条件作出补充规定。Based on the test results, comparison of RC member under pure torsion is studied between Chinese Code for design of concrete structures （GBS0010——2010） and American Code ACI 318M-11, including the cracking torque, the torsional strength, section limit condition and minimum reinforcement ratio. The results show that the design safety degree of American Code is higher than Chinese Code. It is indicated that there are some reasonable problems for torsional strength in our code, and the modification should be further adopted.

关 键 词：钢筋混凝土 纯扭 受扭纵筋 受扭箍筋 

分 类 号：TU318.4[建筑科学—结构工程]