不同加腋宽度下钢筋混凝土偏心节点的抗震性能  

Seismic behavior of reinforced concrete eccentric beam-column joints connecting spread-ended beams with different enlarged width

作　　者：孙捷 柳炳康[1] 周安[1] 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2001年第5期935-939,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：文章介绍通过对五榀偏心距相同、加腋宽度不同的钢筋混凝土框架梁柱偏心节点的试验研究 ,采用梁端沿宽度方向水平加腋来改善偏心节点的抗震性能 ,对不同加腋宽度下的梁柱偏心节点在低周反复荷载下的裂缝发展、受力性能、耗能能力及箍筋和梁筋的应力状态进行分析和比较 ,同时也给出了不同加腋宽度下加腋处斜筋的应力状态 。Five specimens of beam column connections with modified enlarged beam width were tested under reversed cyclic loading. Experimental results showed that eccentric joints connecting spread ended beams, which have enlarged beam width with inclined reinforcement, can result in superior seismic performance. The comparison of crack patterns, the energy dissipation and the stress distribution in stirrups among those eccentric joints connecting spread ended beams with modified enlarged beam width are provided. Also presented in this paper is the stress distribution of inclined reinforcement and straight reinforcement in the enlarged portion of the beams with modified enlarged beam width. The suitable enlarged beam width is also proposed.

关 键 词：梁柱偏心节点 加腋宽度 反复荷载 抗震性能 钢筋混凝土框架 试验研究 

分 类 号：TU375.4[建筑科学—结构工程]