实腹式型钢混凝土异形柱框架刚度与承载力试验研究  

EXPERIMENTAL STUDY ON STIFFNESS AND LOADING CAPACITY OF SOLID STEEL REINFORCED CONCRETE FRAME WITH SPECIAL-SHAPED COLUMNS

作　　者：刘祖强[1] 薛建阳[1] 葛鸿鹏[2] 赵鸿铁[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]中国建筑西北设计研究院有限公司,陕西西安710018

出　　处：《工程力学》2013年第10期86-92,107,共8页Engineering Mechanics

基　　金：国家自然科学基金项目(50978217);教育部高等学校博士学科点专项科研基金项目(20096120110005);陕西省留学人员科技活动择优项目(陕外专发[2010]26号);中建股份有限公司科技研发课题项目(CSCEC-2009-Z-31)

摘　　要：通过2榀实腹式配钢的型钢混凝土(SRC)异形柱框架的低周反复加载试验,获得其破坏特征和荷载-位移滞回曲线,分析其刚度和承载力。结果表明,实腹式配钢的SRC异形柱框架具有良好的抗震性能,破坏机制为梁铰机制;刚度退化由快到慢,呈现出较好的规律性;对SRC异形柱框架的弹性层刚度进行计算,结果与试验结果符合较好;承载力衰减随加载位移的增加而增大,但当位移小于5Δy时,同级位移下承载力衰减较小;实腹式SRC异形柱框架的层间受剪承载力可采用柱底塑性铰法进行计算。According to the experimental study on two frame models composed of reinforced concrete beams and solid steel reinforced concrete （SRC） special-shaped columns under low cyclic reversed loading, the failure pattern and load-displacement hysteretic loops were obtained, and the stiffness and loading capacity were analyzed. The results show that, solid SRC frames with special-shaped columns have excellent seismic performance, and the failure mechanism is the beam-hinged mechanism. The degradation speed stiffness of the structure chances from fast to slow, which shows good regulation. The elastic story stiffness of solid SRC frame with special-shaped columns is calculated, and the results are close to the test results. The strength degradation develops with the increase of displacement, but when the displacement is less than 5Ay, the loading capacity degradation is not obvious under the same displacement. The method of plastic hinge forming at the column bottom is applicable for the calculation of store shear caoacitv of solid SRC frame with special-shaped columns.

关 键 词：实腹式型钢混凝土 异形柱框架 拟静力试验 刚度 承载力 

分 类 号：TU398.2[建筑科学—结构工程]