高含钢率SRC压弯柱滞回性能试验研究  

Experimental study on hysteretic behavior of SRC columns with high ratio of core steel

作　　者：陈以一[1] 王海生[1] 赵宪忠[1] 胡敬礼[1] 汪大绥[2] 姜文伟[2] 包联进[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]华东建筑设计研究院有限公司,上海200002

出　　处：《建筑结构学报》2008年第3期31-39,共9页Journal of Building Structures

摘　　要：中央电视台新台址工程采用的高强度SRC组合柱具有高达30%的含钢率。为了研究其滞回性能,分两个阶段进行了SRC柱的拟静力试验。本文介绍了其中9个试件的试验过程以及试验现象,分析了试件的滞回曲线、延性比以及极限承载力,给出了截面NP-MP理论曲线并与试验结果进行对比。研究结果表明此种高含钢率SRC柱具有良好的抗震性能和变形能力,与普通含钢率的SRC柱有较大差别;采用极限分析方法求得的NP-MP曲线作为计算高含钢率SRC柱截面强度是偏于安全的。The SRC columns used in New CCTV Building have a high structural steel ratio up to 30 percentage and high strength steel has been adopted. To study the hysteretie behavior, a series of pseudo static tests was performed in two phases. In this paper, nine specimens of them were reported. Testing process and phenomena were described, and the hysteretie curves, ductility ratio and loading capacity were analyzed. The axial force and moment relation based on plastic theory was calculated and compared with the test results. It is shown that the SRC column with large ratio of steel has good seismic performance and deformability, and is largely different from those of SRC member with ordinary steel ratio. The method for calculating the interactive strength of axial force and flexural moment by ultimate state is conservative.

关 键 词：钢骨混凝土柱 高含钢率 试验研究 延性 滞回曲线 

分 类 号：TU375.302[建筑科学—结构工程] TU317.1