节点文献
双T形新型约束屈曲支撑的试验研究
EXPERIMENTAL STUDY ON DOUBLE-T-SHAPED INNOVATIVE BUCKLING-RESTRAINED BRACE
【摘要】 双T形新型约束屈曲支撑是一种新型耗能支撑,影响其性能的因素众多。为了考察约束机构、约束比、内核板件宽厚比和内核切割方式等构造因素对其耗能性能的影响,对6个缩尺的双T形新型约束屈曲支撑模型进行低周往复荷载试验,研究支撑结构的破坏形态、滞回性能、耗能能力、位移延性和刚度退化等性能。试验研究表明:该新型支撑的约束机构和内核单元连接可靠;在所考察的因素中,约束机构和约束比的影响较大;具有合理构造的双T形新型支撑滞回圈饱满、耗能稳定、延性较好、屈服后刚度退化较慢。
【Abstract】 The double-T-shaped innovative buckling-restrained brace is a new kind of energy-dissipation brace,so the factors affecting its performance are to be numerous.In order to study the influence of the buckling-restrained mechanism,the buckling restraining ratio,defined as the ratio of Euler load of the outer buckling-restrained mechanism to the yielding load of the steel core,width to thickness ratio of the steel core,the incising mode of the steel core etc lon the energy-dissipation capability of the brace,low cyclic loading tests were conducted on six reduced scale brace specimens.The destruction modality,the hysteretic behavior,energy-dissipation,the displacement ductibility,the rigidity degeneration etc of the innovative brace were studied.The test study demonstrates that the joint of the buckling-restrained mechanism and the steel core of this innovative brace is reliable,and the influence of the buckling-restrained mechanism and the buckling restraining ratio is obvious among all the examined factors,and then the brace with rational composition has a full hysteretic loop,stable energy-dissipation behavior,better displacement ductibility,slower rigidity degeneration.
- 【文献出处】 工业建筑 ,Industrial Construction , 编辑部邮箱 ,2011年10期
- 【分类号】TU399;TU317
- 【被引频次】1
- 【下载频次】92