Full-scale tests of beam-column-slab joints under reversed-cyclic loading

被引：0

作者：

Yang, X. L. ^{[1
]}

Xue, W. C. ^{[1
]}

机构：

[1] Tongji Univ, Dept Bldg Engn, Shanghai 200092, Peoples R China

来源：

ISISS '2007: PROCEEDINGS OF THE INNOVATION AND SUSTAINABILITY OF STRUCTURES, VOLS 1 AND 2 | 2008年

关键词：

beam-column-slab joints; cyclic loading; stiffness degradation; failure mode; displacement ductility; energy dissipation;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Two full-scale reinforced concrete beam-column-slab joints were designed according to a strong column-weak beam and a strong joint-weak element philosophy, which were tested under cyclic lateral loading. The main objective was to investigate the effect of slab on seismic performance of beam-column joint. Performance of the specimens was evaluated in terms of overall strength, stiffness degradation, energy dissipation, failure mode, displacement ductility. The two specimens exhibited a strong column-weak beam failure mechanism. Both joints failed due to concrete crushing and rupture of longitudinal bars as a result of plastic hinges at the beam end. The overall displacement ductility of the interior joint reached about 6.61 similar to 7.16, that of the exterior joint was about 4.42 similar to 4.39, indicating that both specimens behaved in a ductile manner. The test specimens exhibited fatter load vs. displacement hysteretic response, and showed large energy dissipation. The rate of stiffness degradation was greatest before about 0.5% story drift in both specimens. The slab reinforcement parallel to the main beam was found to contribute significantly to the negative flexural moment capacity of the beam. In general, the performance of both joints was satisfactory.

引用

页码：824 / 831

页数：8