摘要
从可靠度校准的角度分析了现行建筑抗震设计规范“强柱弱梁”和轴压比限值的概率意义。结合框架和节点试验结果 ,表明现行规范规定的柱梁弯矩比并不能有效地防止柱铰机构的形成 ;不同抗震等级框架的轴压比限值的失效概率相差较大。本文认为 ,在保证相同的延性失效概率的前提下 ,可以通过提高柱梁抗弯强度比来放宽规范轴压比的限制。最后 。
In the view of reliability calibration, this paper analyzes the probabilistic sense of the provisions of 'Strong Column and Weak Beam' and axial compression ratio in aseismic criteria (GBJ 11 89), which demonstrates that there is much difference between different aseismic ranks of RC frame. The authors suggest that it is possible to make axial compression ratio larger by adjusting the moment capacity ratio between column and beam. Finally, the direction and method of further studies are proposed.
出处
《重庆建筑大学学报》
EI
CSCD
2000年第3期64-68,共5页
Journal of Chongqing Jianzhu University
基金
国家教委高校博士点专项基金资助项目 !(980 532 0 7)
关键词
轴压比
强柱弱梁
可靠度
钢筋
混凝土框架
axial compression ratio
strong column and weak beam
reliability calibration
RC frame
