摘要
为替代粘土砖砌体结构,适应建筑节能发展需求,研发墙体薄、造价低、施工简便、易于推广且抗震性能良好的带斜筋单排配筋混凝土剪力墙多层节能住宅结构。剪力墙中设置斜筋,可提高其抗剪能力并防止基底剪切滑移,有效改善其抗震耗能能力。进行4个一字形截面低矮混凝土剪力墙的低周反复荷载试验,研究不同轴压比下,带斜筋单排配筋低矮混凝土剪力墙的抗震性能,并与不带斜筋的单排配筋混凝土剪力墙进行比较,分析其破坏特征、滞回特性、承载力、延性、刚度和耗能能力。在试验研究基础上,建立其承载力简化计算模型。研究表明:带斜筋单排配筋混凝土低矮剪力墙的抗震性能优于普通单排配筋混凝土剪力墙,能较好地满足抗震设计要求。
To replace the traditional clay-brick structure and adapt to the requirements for the development of energy-saving buildings, the reinforcement concrete （RC） shear wall structure with a single layer of web reinforcement and inclined steel bars was proposed. Compared with conventional RC shear wall structures with double layers of web reinforcement, it has the advantages of smaller wall thickness, simpler construction details and lower cost. The inclined steel bars can prevent base sliding so that the shear wall has higher anti-shearing and energy dissipation capacity. Cyclic loading tests on four low-rise RC shear walls with rectangle cross section were carried out. The inclined steel bars arrangement and axial force ratio were taken as the major test variables. Based on the experimental research, the failure characteristics, hysteresis properties, load-carrying capacity, ductility, stiffness and energy dissipation of each specimen were analyzed. The seismic performance of RC shear walls with inclined steel bars was compared with that of RC shear walls without the inclined steel bars. Calculative formulas for the load-carrying capacity of low-rise RC shear walls with single web reinforcement and inclined steel bars were also established. The research results indicate that the seismic performance of low-rise RC shear walls with inclined steel bars is better than that of shear walls without the inclined steel bars. So it is able to better satisfy the requirements of seismic design for multistory residential buildings.
出处
《工程力学》
EI
CSCD
北大核心
2016年第B06期125-132,共8页
Engineering Mechanics
基金
国家自然科学基金项目(51378029)
中国建筑股份有限公司科技项目(CSCEC-2011-Z-16)
关键词
斜筋
单排配筋
低矮剪力墙
抗震性能
低周反复荷载试验
inclined steel bar
single layer of reinforcement
low-rise RC shear wall
seismic performance
cyclic loading test
