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.
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
关键词
双钢管混凝土柱
正截面受压承载力
试验
concrete-filled double steel tubular short column
compressive load-carrying capacity of normal cross section
test
