竖向荷载作用下钢筋混凝土方柱——T形薄壁柱局部转换节点试验研究  

An experimental research of vertically-loaded T-shaped RC joint of local transfer from square column to straight wall

作　　者：钟树生[1] 凌焕文[1] 肖德周 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]广州合生集团有限公司,广东广州510060

出　　处：《四川建筑科学研究》2005年第2期24-27,35,共5页Sichuan Building Science

摘　　要：通过6个钢筋混凝土方柱———T形薄壁柱局部转换节点在竖向荷载作用下的试验,获得了该类转换节点的基本受力性能。其中包括开裂前后的应力状态,裂缝的发生、发展,及试件最后的破坏形态等。试验重点研究了用剪跨比表示的转换梁加腋高度对节点受力性能的影响,并得出了加腋高度不仅影响转换梁本身的承载能力,还对其上的薄壁柱的应力状态和承载力有直接影响的结论。According to experimental achievements of six 'T' shape specimens of vertically-loaded T-shaped RC joints of local transfer from square column to straight walls,mechanical behaviors of the joint are investigated,which include stress states before and after cracking,occurrence and development of cracks and the failure modes,In the test,the effect of the armpit of shear span ratio of the transfer beam upon the behavior of the joint is specially studied.The test results show that the armpit height in terms of shear span ratio has a significant influence not only the shear capacity of the beam itself,but also upon the stress state and capacity of wall above it.

关 键 词：竖向荷载作用 混凝土方柱 薄壁柱 节点 试验研究 局部 T形 钢筋 受力性能 应力状态 破坏形态 承载能力 直接影响 转换梁 剪跨比 承载力 高度 加腋 裂缝 试件 

分 类 号：TU473.1[建筑科学—结构工程] TU375.3[建筑科学—土工工程]