摘要
基于高强钢构件的卓越的弹性变形能力、阻尼器的耗能能力与梁端"保险丝"连接板的损伤控制性能,提出了一种大震下功能不中断或快速可恢复的高强钢框架结构体系。通过静力往复试验,对该结构体系中关键部位——带"保险丝"连接板的高强钢梁柱节点的力学性能进行了考察。试验完成了4个钢节点的测试,包括1个普通钢节点、1个高强钢节点以及2个带损伤控制"保险丝"的高强钢节点试件。试验表明,高强钢在大幅提高(至3倍左右)构件弹性变形能力方面具有良好的可行性;该文建议的"保险丝"连接板可有效的控制梁端的承载力需求,保证主体高强钢框架不屈服。
A novel seismic frame structural system that allows continuous use after major earthquakes is proposed by making full use of the superior elastic deformation capacity of high-strength steel, energy dissipation of dampers, and damage control functions of fuse plates. The mechanical behavior of one of the key structural components, that is, the welded beam-to-column moment connection with fuse plates, is investigated by cyclic loading tests. Four steel beam-to-column welded connection specimens, including one common steel connection, one high-strength steel connection with no fuses and two high-strength steel joints with two different types of damage-control fuse plates, are tested. It is shown from the test results that the elastic deformation capacity can be increased by about three times by using high-strength steel, which is sufficient to meet the deformation demand of the proposed structural system. The proposed damage control fuses work well to limit the force demand that is exerted to the members and joints, keeping the high strength steel frame remain elastic.
出处
《工程力学》
EI
CSCD
北大核心
2017年第B06期143-148,共6页
Engineering Mechanics
基金
地震行业科研专项项目(201508023)
国家自然科学基金青年项目(51408562)
黑龙江省自然科学基金面上项目(E20150607)
关键词
高强钢
“保险丝”
高弹性框架
损伤控制
钢节点
high-strength steel
fuse
highly elastic frame
damage control
steel joint
