钢筋混凝土框架“强柱弱梁”抗震措施的试验研究  

Tests on Seismic Fortification Measures about"Strong Column and Weak Beam" for RC Frame

作　　者：吕西林[1] 李森[1] URUKAP Tonny Hareash 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2011年第B01期151-156,共6页Structural Engineers

摘　　要：针对历次震害中钢筋混凝土框架结构的梁柱节点容易破坏的问题,本文进行了4个足尺框架梁柱组合节点试件的低周反复荷载试验。重点研究了不同柱梁强度比值对钢筋混凝土框架抗震性能的影响。结果表明,提高柱梁抗弯强度比值可以更好地保证梁端率先出现塑性铰,有效减小节点核心区和柱端的破坏程度,进而提高水平地震作用中框架节点的延性。The beam-column joints in a reinforced concrete frame are vulnerable to damage caused by seismic events. This paper introduces four full-scale beam-column joints with different ratio of bending moment of column to beam tested under reversed cyclic loading. The test results with higher ratio developed plastic hinges earlier in beams, effectively reduced damages in joint core and column and test joints exhibited better ductility capacity under lateral seismic loading.

关 键 词：钢筋混凝土框架结构 梁柱组合节点 强柱弱梁 柱梁抗弯强度比值 

分 类 号：TU375.4[建筑科学—结构工程]