摘要
为比较区域约束与传统约束的差异,对6根混凝土柱(传统约束混凝土柱和区域约束混凝土柱各3根)进行了不同轴压比下的周期往复荷载试验。区域约束混凝土采用区域约束与整体约束相结合的约束方式,箍筋与纵筋共同作用,约束效力更高。试验结果表明,即使在高轴压比下,区域约束混凝土也有较好的承载能力和变形能力,极限状态为延性破坏。区域约束混凝土的应用可有效提高建筑结构抗震性能,具有推广应用价值。
In order to compare the differences between the regional constraint and normal constraint, tests are done on 6 concrete columns under low cyclic loading mode, while half of them are normal confined concrete （NCC） columns, and the others are regional confined concrete （RCC） columns. The regional constraint is used by regional constraint and total constraint, and the longitudinal steel and stirrup action together, confinement in RCC columns is more efficient than that in NCC columns. Test results indicate that the mechanical properties of RCC columns is better than NCC columns, and they are more ductile and more reliable even under high axial compression ratio. It can be expected that the application of RCC may effectively improve the seismic behavior of structures.
出处
《混凝土与水泥制品》
北大核心
2013年第1期57-60,共4页
China Concrete and Cement Products
基金
贵州大学研究生创新基金资助项目(校基金-理工2012010)
关键词
轴压比
往复荷载
区域约束混凝土
延性
抗震性能
Axial compression ratio
Cyclic loading
Regional confined concrete（RCC）
Ductility
Seismic behavior
