简化边缘构造的单排配筋中高剪力墙抗震性能试验研究
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摘要
单排配筋剪力墙结构是取代黏土砖砌体结构的一种节能结构形式,适用于多层住宅建筑。为研究简化的边缘构造对中高剪力墙抗震性能的影响,进行4个剪跨比为1.5的中高剪力墙低周反复荷载试验,其中包括3个不同简化边缘构造形式的单排配筋混凝土剪力墙、1个约束配筋页岩砖砌体剪力墙。在试验研究基础上,较系统地分析不同边缘构造剪力墙的承载力、延性、刚度及其衰减过程、滞回特性、耗能能力和破坏特征等,建立其承载力简化力学模型与公式,计算结果与试验结果符合较好。研究表明,简化边缘构造的单排配筋混凝土中高剪力墙的抗震性能明显优于砖砌体墙。
The RC shear wall with single row of steel bars is not only applicable for multistory residence building,but also important for energy-saving building structure system to replace clay brick. In order to know the effects of simplified boundary element on seismic performance of this shear wall,the low-frequency quasi-static cyclic loading experimental study on four mid-rise shear walls with shear-span ratio 1.5 was carried out. The four walls included three RC shear walls with single row of steel bars and simplified boundary elements as well as one masonry shear wall composed of confined shale bricks. Based upon the experimental study,the bearing capacity,ductility,stiffness and degradation,hysteretic performance,energy dissipation and failure phenomena of the walls with different boundary members were systematically analyzed. Mechanical models and formulas of bearing capacity of the RC shear walls were established ,and the results calculated from the formulas and those from experiments were in good agreement. In addition,the study indicated that the seismic performance of mid-rise RC shear walls with bi-directional single row of steel bars and simplified boundary elements surpasses the masonry shear wall obviously.
The RC shear wall with single row of steel bars is not only applicable for multistory residence building,but also important for energy-saving building structure system to replace clay brick. In order to know the effects of simplified boundary element on seismic performance of this shear wall,the low-frequency quasi-static cyclic loading experimental study on four mid-rise shear walls with shear-span ratio 1.5 was carried out. The four walls included three RC shear walls with single row of steel bars and simplified boundary elements as well as one masonry shear wall composed of confined shale bricks. Based upon the experimental study,the bearing capacity,ductility,stiffness and degradation,hysteretic performance,energy dissipation and failure phenomena of the walls with different boundary members were systematically analyzed. Mechanical models and formulas of bearing capacity of the RC shear walls were established ,and the results calculated from the formulas and those from experiments were in good agreement. In addition,the study indicated that the seismic performance of mid-rise RC shear walls with bi-directional single row of steel bars and simplified boundary elements surpasses the masonry shear wall obviously.
引文
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[6]张运田,郁银泉.钢结构住宅建筑体系研究进展[J].钢结构,2002,(6):22-23(Zhang Yuntian,Yu Yinquan.Advance in research on residential building system of steel structure[J].Steel Construction,2002,(6):22-23(in Chinese))
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[8]GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002(GB50010—2002Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2002(in Chinese))
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