梁柱式木框架-支撑体系低周反复试验研究  

Experimental Study on Timber Post and Beam Frame-brace Structure Systems under Lateral Cyclic Loading

作　　者：熊海贝[1] 李冰阳 刘应扬[1] 姚亚[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2015年第1期147-154,共8页Structural Engineers

摘　　要：对4榀不同支撑形式、不同支撑连接节点螺栓数目的单层单跨梁柱式木框架足尺试件进行水平荷载低周反复试验研究,得到了木框架-支撑结构体系的破坏模式、滞回曲线、骨架曲线、有效刚度曲线和耗能等性能。试验结果表明:在木框架抗侧强度和支撑杆件强度保证的前提下,提高支撑连接节点螺栓数目,对提高木框架-支撑结构体系的承载力和抗侧刚度具有良好的效果。最后提出了"强框架弱支撑"的设计思想,建议以螺栓屈服作为第一道防线,节点的塑性发展作为体系耗能的基础,并给出了支撑连接节点的构造措施。Four lateral cyclic tests on full-scale one-story,one-bay timber post and beam construction specimens were carried out,considering frame with different brace forms and different number of brace connection bolts.The seismic performance of each specimen was obtained according to the experimental phenomena,hysteresis curves,envelope curves,curves of effective stiffness and curves of energy dissipation.Results showed that increasing the number of the brace connection bolts could effectively improve the elastic stiffness and the bearing capacity of the frame-brace systems,when the lateral resistance capacity of the frame and strength of the brace were ensured.Finally,construction measures of the brace connection joints and the design idea of＂strong frame weak brace＂were given,suggesting that the bolts yielding be taken as the first defensive line,and the joints plastic development as the basis of the system＇s energy consumption.

关 键 词：梁柱式木框架结构体系 框架-支撑体系 隅撑 人字撑 抗侧性能 

分 类 号：TU366.2[建筑科学—结构工程]