轻钢结构加层中新型节点抗震性能试验研究  

Experimental Study on the Seismic Behavior of New-type Joints in Steel Adding Storey

作　　者：郭蓉[1] 赵少伟[1] 尹成林[1] 

机构地区：[1]河北工业大学土木工程学院,天津300041

出　　处：《工程抗震与加固改造》2013年第3期97-102,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：河北省建设厅科技研究项目(2009-207)

摘　　要：为了研究轻钢结构加层工程中节点的抗震性能,对传统植筋节点、碳纤维材料强化节点以及连接形式转化节点进行了拟静力试验,分析研究了节点的破坏现象、滞回曲线、骨架曲线、刚度退化、耗能能力等抗震性能。研究表明:三种轻钢结构加层节点的破坏形态均表现为梁端塑性铰破坏,最大裂缝均出现在梁端;两种新型节点的抗震性能均优于传统植筋节点,碳纤维强化节点的滞回曲线最饱满,耗能能力最强;连接形式转化节点的刚度提高程度最大,施工工艺简单。In order to study the seismic performance of the nodes between the concrete frame and the steel adding storey, the pseudo- static tests are carried out among the three types of nodes strengthened by traditional plant steel, carbon fiber sheet and converted connection form separtately. Performance of the test specimens is evaluated in terms of failure mode, hysteretic loops, skeleton curves, stiffness degradation and energy dissipation, etc. The results of the study show that： the three types of joints＇ failures are due to the plastic hinges and maximum crack emerging at the end of the beam, the seismic performance of the two new types of joints strengthened by carbon fiber sheet and converted connection from is better than the traditional plant steel one, and the hysteresis curve envelope area of joint strengthened by carbon fiber sheet is the biggest, and its energy consumption capacity is the most powerful; the node strengthened by converted connection form improves the stiffness in the largest range, and its construction technique is simple and convenient.

关 键 词：轻钢结构加层 节点 碳纤维 连接形式转化 拟静力试验 抗震性能 

分 类 号：TU392.5[建筑科学—结构工程] TU352.11