轴心受压双钢管混凝土短柱正截面承载力的试验研究  

Experimental Study of Concrete-filled Double Steel Tubular Short Columns Subjected to Axial Compression Load

作　　者：江韩 左江 程文瀼[2] 

机构地区：[1]南京市建筑设计研究院有限责任公司,江苏南京210005 [2]东南大学土木工程学院,江苏南京210096

出　　处：《工程抗震与加固改造》2008年第1期28-35,54,共9页Earthquake Resistant Engineering and Retrofitting

摘　　要：对5个双钢管混凝土短柱进行了轴心受压试验。试验结果表明,在轴心受压荷载作用下双钢管混凝土柱的受力全过程是由弹性、弹塑性以及破坏3个阶段组成的,具有很好的延性。由于双钢管混凝土短柱截面含钢率较高,钢管对核心混凝土的约束效应较大,所有试件破坏模式均为腰鼓型破坏。试件的整体工作性能较好,外钢管与内钢管变形一致,试件的极限承载力随着套箍系数增大逐步增加。The correctness of theory analysis is proved by the test results of 5 concrete-filled double steel tubular short column specimens subjected to axial compression load. The test results show that the whole working process of these specimens consists of three stages, including elastic stage, elastic-plastic stage and failure stage. The test results also show that ductility of all specimens is very good and the loaddeformation curves are well keeping with the theory analysis result. Because of the high steel ratio of concrete-filled steel tubular columns, all the specimens are destroyed with drum shape failure mode. The deformation of inner steel tube agrees well with that of the outer steel tube and the load-carrying capacity of the specimen is going up if the confining factor increases.

关 键 词：双钢管混凝土柱 正截面受压承载力 试验 

分 类 号：TU398.9[建筑科学—结构工程]