摘要
通过对6个传统风格建筑钢-混凝土组合梁-柱节点试件,其中包括双梁-柱节点系列及单梁-柱节点系列,在动力循环荷载作用下的试验研究,分析了试件的弹塑性特性及试件在各受力阶段的刚度衰减过程。分析结果表明:双梁-柱试件刚度衰减速率小于单梁-柱试件;附设黏滞阻尼器使试件的刚度及变形能力均有不同程度的提高;各试件刚度衰减均表现出由快到慢的规律;获得了层间位移角的变化与刚度退化之间的关系;试件正、负向弹塑性性能接近,极限层间位移角大于规范规定的限值;附设黏滞阻尼器的试件抗倒塌能力增强;附设黏滞阻尼器的试件耗能能力优于无黏滞阻尼器的试件。由此表明,将消能减震装置与传统风格建筑相结合,可显著提高其力学性能。总体上,结构破坏时形成梁铰机制,符合“强柱弱梁、强节点弱构件”的抗震设防要求。
According to experimental study of 6 traditional architecture beam-column assemblies of steel and composite structures, including double-beam-column assemblage and single-beam-column assemblage, the elasto-plastic characteristics of specimen and the stiffness attenuation process of specimen at each stress stage were analyzed. Results indicate that the stiffness attenuation rate of double beam-column assembly is less than that of single beam-column assembly. With viscous dampers, the stiffness and deformation capacity of specimens are improved in varying degrees. The stiffness attenuation of each specimen presents from fast to slow pattern. The relationship between the variation of interstory displacement angle and stiffness attenuation was obtained. The positive and negative elasto-plastic properties of structure are close, and the displacement angle between the limit layers is greater than the limit specified in the code. The positive and negative elasto-plastic properties of specimen are similar, and the displacement angle between the ultimate interlayer is greater than the limit specified in the code. Viscous dampers enhance the collapse resistance of specimens. The energy dissipation capacity of specimens with viscous dampers is better than that without viscous dampers. It is shown that the mechanical properties can be improved significantly by combining the energy dissipation device with the traditional architecture. As a whole, the beam hinge mechanism is formed when the structure is destroyed, which accords with the seismic fortification requirements of “strong column and weak beam, strong joint and weak member”.
作者
董金爽
隋龑
薛建阳
DONG Jin-shuang;SUI Yan;XUE Jian-yang(College of Civil Engineering and Architecture,Hainan University,Haikou 570228,Hannan,China;School of Civil Engineering Xi'an University of Architecture & Technology,Xi'an 710055,Shanxi,China)
出处
《实验力学》
CSCD
北大核心
2019年第5期841-852,共12页
Journal of Experimental Mechanics
基金
海南大学科研基金资助项目(KYQD(ZR)1860)
国家自然科学基金项目(51208411)
国家科技支撑计划课题(2014BAL06B03)
中建股份科技研发课题(CSCEC-2012-16)
陕西省科学技术研究发展计划项目(2013KW23-01)
关键词
传统风格建筑
双梁-柱节点
刚度衰减
弹塑性性能
traditional architecture
double beam-column assembly
stiffness attenuation
elasto-plastic property
