再生保温混凝土剪力墙抗震性能试验研究及模拟分析  

Experimental Study and Simulation Analysis on Seismic Behavior of Recycled Aggregate Thermal Insulation Concrete Shear Wall

作　　者：李波 杨日震 张玉[1] 马钢[1] LI Bo;YANG Rizhen;ZHANG Yu;MA Gang(College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Installation Group Co.,Ltd,Taiyuan 030032,China)

机构地区：[1]太原理工大学土木工程学院,太原030024 [2]山西省安装集团股份有限公司,太原030032

出　　处：《太原理工大学学报》2023年第3期490-499,共10页Journal of Taiyuan University of Technology

基　　金：住建部科学技术计划资助项目(2021-K-046)。

摘　　要：设置了4个再生保温混凝土剪力墙对照组进行拟静力试验,结合ANSYS有限元分析软件进行再生保温混凝土剪力墙模型建立和分析,研究再生保温混凝土剪力墙的抗震性能。通过对比低周往复荷载下剪力墙构件应力云图和钢筋Mises应力云图,将试验结果与模拟分析相结合,深入研究轴压比、剪跨比、暗柱配筋率及箍筋约束对于剪力墙抗震性能的影响。结果表明:模拟采用的混凝土及钢筋计算模型,其计算值与实验值之间偏差不超过10%,是较为可靠的计算模型;再生保温混凝土比一般混凝土的最大承载力高1.2%~4.7%,因剪跨比不同再生保温混凝土延性系数比普通混凝土高5.1%~12.8%,具有很好的抗震性能;高剪跨比构件拥有更好的抗震性能,且剪跨比对结构的影响程度在加载前期大于加载后期;轴压比从0.14增加至0.3过程中,承载力的提升约为35%,但承载力提升使构件的延性和抗震能力均下降;增加暗柱配筋率能有效提高混凝土构件的延性和抗震能力。In this paper,four control groups of recycled aggregate thermal insulation concrete shear walls were set up for proposed pseude static tests,and the modeling and analysis of recycled aggregate thermal insulation concrete shear walls were conducted with ANSYS finite element analysis software to study the seismic performance of recycled aggregate thermal insulation concrete shear walls.By comparing the stress cloud map of shear wall elements under low circumferential reciprocal loads and that of reinforcement Mises,the test results were combined with the simulation analysis to investigate in depth the effects of axial compression ratio,shear-to-span ratio,dark column reinforcement ratio,and stirrup constraint on the seismic performance of shear walls.The results show that:the concrete and reinforcement calculation model used in the simu lation is a more reliable calculation model because the calculated values are in good agreement with the experimental values and the deviation does not exceed 10%;the maximum bearing capacity of recycled aggregate thermal insulation concrete is 1.2%-4.7%higher than that of normal concrete,and the ductility coefficient of recycled aggregate thermal insulation concrete is 5.1%-12.8%higher than that of normal concrete depending on different shear-span ratios,which has good seismic performance.High shear-to-span ratio members have better seismic performance,and the degree of influence of shear-to-span ratio on the structure is greater in the preloading period than in the post-loading period;the increase of bearing capacity in the process of axial compression ratio from 0.14 to 0.3 is about 35%,but the increase of bearing capacity makes the ductility and seismic capacity of the members decrease;the increase of dark column reinforcement rate makes the members effectively improve the ductility and seismic capacity of the concrete members.

关 键 词：再生保温混凝土 剪力墙 抗震性能 拟静力试验 

分 类 号：TU528.01[建筑科学—建筑技术科学]