预应力方套管连接胶合木梁柱节点抗弯试验  

Rotational Performance of Pre-Stressed MultiBolted Glulam Connection with Square Tubes

作　　者：赵艺[1,2] 何敏娟[1] 马人乐[1] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]上海绿地科技岛置业有限公司,上海200335

出　　处：《同济大学学报（自然科学版）》2016年第8期1182-1189,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(51378382)

摘　　要：提出在胶合木结构中采用预应力方套管螺栓连接,该连接采用高强螺栓和钢套管作为连接件.通过单调加载和往复加载下的梁柱节点抗弯试验,对比了方套管节点和传统螺栓群连接节点的破坏模式、弯矩-转角曲线、滞回曲线、强度、刚度和耗能性能.结果表明,由于摩擦阶段钢管与钢板间的摩擦力确保了初始传力,套管节点的初始转动刚度显著提升,耗能能力也得到改善.This paper presents an experimental study on the moment resisting capacity and stiffness of the proposed pre- stressed bolted connection. High-strength bolts with square tubes were used as fasteners in such connections. Two groups of experimental tests were conducted with T-shaped glulam beam-to-column connections at monotonic and reversed cyclic loading. The failure mode, moment-rotation curve, strength, stiffness and energy dissipation property of the pre-stressed bolted connections with square tubes were obtained and compared with those of traditional bolted connections. The results show that the initial rotational stiffness of pre-stressed bolted connection increases significantly as a result of the friction between steel tubes and steel plate at the friction stage, and the energy dissipation capacity of pre-stressed bolted connection is also improved.

关 键 词：胶合木结构 方套管螺栓连接 预应力 摩擦 刚度 

分 类 号：TU366.2[建筑科学—结构工程]