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钢管混凝土叠合柱环梁节点试验研究

发表时间:2013-07-31  浏览量:975  下载量:469
全部作者: 周颖,于海燕,瞿革,张录,陈yN,胡凯
作者单位: 同济大学土木工程防灾国家重点实验室;中船第九设计研究院工程有限公司
摘 要: 提出一种梁柱连接处扩大的环梁节点形式。为研究钢管混凝土叠合柱环梁节点的受力性能,进行2个基准试件的静力试验,同时以径宽比和配筋比为2个参数变量,进行5个试件的低周反复试验,观测试件的破坏模式、裂缝开展及节点区钢筋应力分布。静力试验下试件的承载力均高于设计包络值;低周反复试验下不同参数变量的试件,呈现出不同的破坏模式,破坏时梁肢的转角值均比较大。结果表明:钢管混凝土叠合柱环梁节点在概念上是可行的,合理的设计可保证“强节点、弱构件”机制的实现。
关 键 词: 土木建筑结构;钢管混凝土叠合柱;环梁节点;径宽比;配筋比;试验
Title: Experimental study on joints of ring beams and reinforced concrete-concrete filled in steel tube laminated columns
Author: ZHOU Ying, YU Haiyan, QU Ge, ZHANG Lu, CHEN Yi, HU Kai
Organization: State Key Laboratory of Disaster Reduction Civil Engineering, Tongji University; China Shipbuilding Ninth Design & Research Institute Engineering Co., Ltd.
Abstract: This paper presented a type of enlarged joints at the connection between columns and frame beams. To study the mechanical behavior of reinforced concrete-concrete filled in steel tube (RC-CFST), two scaled static tests and five cyclic tests with the two parametric variables of radius-to-width ratio and reinforcement ratio were carried out to obtain the failure modes of the specimens, crack propagation and stress distribution of bars of the joints. The results showed that, under static load, the ultimate capacity of the specimens was higher than the design envelope value; under cyclic load, specimens of different parameter variables, present different failure modes, and rotation angle were large when beam segments were destroyed. These results suggested that the joints of reinforced concrete concrete filled in steel tube laminated columns were feasible in concept, and reasonable design could guarantee the design mechanism of “strong-joint-weak-member”.
Key words: building and civil engineering structure; reinforced concrete-concrete filled in steel tube laminated columns; ring beam joint; radius-to-width ratio; reinforcement ratio; test
发表期数: 2013年7月第14期
引用格式: 周颖,于海燕,瞿革,等. 钢管混凝土叠合柱环梁节点试验研究[J]. 中国科技论文在线精品论文,2013,6(14):1303-1312.
 
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