摘要
通过劲性环梁式钢管混凝土节点试件的低周反复荷载试验,研究了节点的受力性能,结果表明:此类节点有效实现了梁铰破坏机制,满足"强柱弱梁、强节点强锚固"的抗震设计要求。运用ABAQUS对节点试件在低周反复荷载作用下的滞回性能进行非线性模拟计算,拓展分析了各部件的应力分布及传递规律,结果表明:节点破坏始于框架梁纵筋屈服,钢管混凝土柱处于弹性阶段,环梁没有产生明显的破坏;塑性铰距离柱边有一定的距离,有效防止梁筋的屈服对节点核心区的影响。
Three specimens of steel reinforced ring-beam connections of concrete filled steel columns and reinforced concrete （RC） beams were experimentally studied on the hysteretic behavior. Stress distributions and Load-displacement curves of these specimens were recorded. According to the tests, the mechanism, the ultimate failure mode and the stress patterns were also analyzed. The results show that a good behavior can be obtained by using the joints. And studies also show that a plastic hinge starts from the beam. A finite element analysis model is developed using ABAQUS. The transfer mechanism and internal force distribution of these specimens are analyzed, which may provide a good base both on theory and practice.
出处
《工程力学》
EI
CSCD
北大核心
2013年第B06期241-247,共7页
Engineering Mechanics
基金
中央高校基本科研业务费专项资金项目(201121002020003)
关键词
钢管混凝土
节点
受力性能
试验研究
有限元分析
concrete filled steel tube
joint
mechanical behavior
experimental study
finite analysis
