竖向荷载作用下钢筋混凝土斜柱—短肢剪力墙局部转换节点的试验研究  

A study of vertically-loaded local transfer RC joint from inclined column to framed short shear wall

作　　者：钟树生[1] 曹林[1] 鲁瑛[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《四川建筑科学研究》2005年第1期38-42,共5页Sichuan Building Science

摘　　要：通过2个斜柱转换节点在竖向荷载下的静载试验,获得了空腹和实腹斜柱转换节点的受力机理。结果表明,空腹斜柱转换节点的转换梁在拉、弯、剪复杂受力下的破坏,导致了短肢剪力墙局压破坏的发生,并使其承载能力不能充分发挥,且整个节点的受力机制具有明显的桁架模型特征。实腹斜柱转换节点的传力机制和加腋的转换梁类似,但转换梁和剪力墙中应力分布更均匀,转换效果更好。According to test results of two specimens of local transfer RC joint from inclined columns to a beeline-shaped wall under vertical static loads,fundamental behaviors of a hollow joint and a solid joint are achieved.As for the hollow joint,the results show that a failure in the transfer beam due to a complex stress state composed of tension,flexural moment and shear force resulted in a dramatic stress redistribution as well as a local compressive failure in the wall,in which its capacity decreased a great deal.However,the mechanical behaviors of the joint obviously followed the characteristics of a truss model.As far as the solid joint is concerned,the load transfer mechanism is similar to a beam with an armpit,in which the stress distributions in both the beam and the wall are more even,so the effect of transfer is much better than that of the hollow joint.

关 键 词：斜柱 节点 转换梁 短肢剪力墙 竖向荷载作用 钢筋混凝土 受力机理 加腋 破坏 试验研究 

分 类 号：TU755.21[建筑科学—建筑技术科学] TU761.3