剪切屈服型新型混合联肢墙足尺节点抗震性能试验研究

发布时间：2018-03-01 20:32

本文关键词： 钢连梁混合联肢墙剪切屈服抗震性能型钢边缘构件　出处：《土木工程学报》2015年07期 　论文类型：期刊论文

【摘要】：为研究含型钢边缘构件新型混合联肢墙体系节点的破坏特征和抗震性能,进行3个剪切屈服型连梁的混合联肢墙足尺节点的低周往复加载试验。观察节点的受力过程及破坏形态,并对试件的破坏机理、滞回性能、承载能力、耗能能力、变形组成、节点区设置面承载板以及连梁跨高比的影响进行分析。试验结果表明:新型混合联肢墙节点滞回曲线呈纺锤形,通过合理设置加劲肋,能够较好地限制局部屈曲,使其剪切屈服耗能,具有良好的抗震性能;节点等效黏滞阻尼系数在0.33以上,延性系数在4.75以上,类似于偏心支撑钢框架耗能梁段的性能;面承载板的设置对节点受力性能影响不大;钢连梁在跨高比1.7到4.3之间时都具有优良的抗震性能,能较好地解决混凝土连梁配筋困难、小跨高比连梁延性不足的问题。成果可供混合联肢墙体系的工程设计参考。
[Abstract]:In order to study the damage characteristics and seismic behavior of the joints of a new type of composite wall system with steel edge members, In this paper, the low cycle reciprocating loading test of the full-scale joint of three shear yield type coupling beams is carried out. The failure mechanism, hysteretic performance, bearing capacity, energy dissipation capacity and deformation of the joint are observed, and the failure mechanism, hysteretic performance, bearing capacity, energy dissipation capacity and deformation of the joint are observed. The results show that the hysteretic curve of the new hybrid limb wall joint is spindle-shaped, and the local buckling can be well limited by setting stiffened ribs reasonably. The equivalent viscous damping coefficient of joints is above 0.33 and the ductility coefficient is above 4.75, which is similar to that of eccentrically braced steel frames. The installation of face bearing slab has little effect on the mechanical performance of the joints, and the steel connected beams have excellent seismic performance when the span height ratio is between 1.7 and 4.3, which can solve the problem of the reinforcement arrangement of the concrete connecting beams. The problem of ductility of small span to height ratio connecting beam is insufficient. The results can be used as reference for the engineering design of the composite limb wall system.
【作者单位】：西安建筑科技大学结构工程与抗震教育部重点实验室;
【基金】：国家自然科学基金(50878182) 陕西省自然科学基金(SJ08E209)
【分类号】：TU398;TU352.11

【共引文献】