DISCUSSION ON THE IMPROVING COEFFICIENT FOR BEARING CAPACITY OF SPIRAL REINFORCEMENT COLUMN UNDER AXIAL COMPRESSION

摘要：

In the Code for Design of Concrete Structure (GB50010-2002), the improving coefficient for bearing capacity of spiral reinforcement column under axial compression is mainly obtained by experiments, but it shows a lack of systematicness and theoretical property. In the paper,the twin shear unified strength theory, which considers the influence of intermediate principal stress σ2 and can be applied to various materials under complex stress state, is adopted to analyze the reason that the bearing capacity of spiral reinforcement column under axial compression is enhanced.The bearing capacity formula of spiral reinforcement column based on unified strength theory is proposed. Compared with the formula of the code, the bearing capacity formula of spiral reinforcement column under axial compression based on unified strength theory has more systematicness and theoretical property, and the calculated values are closed to the experimental values. So the modified formula can provide more applicability and economy for practical engineering.

关键词： Two shear unified strength theory The core concrete Spiral reinforcement

作者: Wei Huang Zhen-Feng Lu Guo-Xin Chen Qian-Feng Yao

作者单位: College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055,P.R. China College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055,P.R. China

会议类型: 国际会议

会议名称: 第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)

会议地点: 长沙

会议语种:英文

页码: 506-511

在线出版日期: 2008-10-19（万方平台首次上网日期，不代表论文的发表时间）