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.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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)
关键词
胶合木结构
方套管螺栓连接
预应力
摩擦
刚度
glulam structure
multi-bolted connection with square tubes
prestress
fraction
rotational stiffness
