波形钢板加强的钢管混凝土组合剪力墙抗震性能分析  

Anti-Seismic Performance of Composite Shear Walls of Concrete Filled Steel Tube Reinforced with Corrugated Steel Plates

作　　者：张良 吴边 张凤亮 刘洋 ZHANG Liang;WU Bian;ZHANG Fengliang;LIU Yang(Construction Engineering Company of China Railway No.5 Engineering Group Co.,Ltd.,Guiyang 550081,China;School of Civil and Environmental Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518000,China)

机构地区：[1]中铁五局集团建筑工程有限责任公司,贵阳550081 [2]哈尔滨工业大学(深圳)土木与环境工程学院,广东深圳518000

出　　处：《工业建筑》2022年第10期146-155,138,共11页Industrial Construction

基　　金：贵州省科技支撑项目(黔科合支撑[2021]一般357)。

摘　　要：波形钢板加强的钢管混凝土组合剪力墙是一种新型的结构抗侧体系,由于采用了“承重抗侧分离”的设计,材料性能发挥充分,组合效应明显,可用于加强钢管混凝土结构的抗侧刚度,提升其抗震性能。为研究该种组合剪力墙的抗震性能,首先对照试验现象,标定有限元数值模拟参数;然后基于3组共12片试件的有限元模拟计算结果,分析了组合剪力墙在多级水平往复荷载作用下的弹塑性受力及变形发展规律、破坏模式、滞回特征、耗能能力等抗震性能参数;最后研究了不同轴压比、剪跨比、波形钢板厚度对组合剪力墙抗震性能的影响。研究结果表明:组合剪力墙的抗侧力学行为具有明显的两阶段特征,其滞回曲线饱满,强度退化慢,耗能能力好,极限位移角及位移延性均很高;提高轴压比有利于提高极限承载力,但会导致第二阶段承载力的快速下降;剪跨比主要影响组合剪力墙的破坏模式;波形钢板相对高厚比的合理取值范围应在500~800之间。The composite shear wall of concrete filled steel tube(CFST) reinforced with corrugated steel plates is a new structural lateral force resistance system. It adopts a design featuring separate load-bearing and lateral force resistance and fully exerts the performance of materials, with a remarkable composite effect. Therefore, the composite shear wall can be used to strengthen the lateral force resistance stiffness of reinforced CFST structures and improve the anti-seismic performance of the structures. In order to study the anti-seismic performance of the composite shear wall, finite element(FE) numerical simulation parameters were first calibrated according to experimental phenomena. Then, in view of the FE simulation results of 12 specimens in three groups, anti-seismic performance parameters such as elastic-plastic force and deformation laws, failure modes, hysteresis characteristics, and energy dissipation capacity were studied when the composite shear wall was subjected to multilevel and horizontal reciprocating loads. Finally, the effect of different axial compression ratios, shear-to-span ratios, and corrugated steel plate thicknesses on the anti-seismic performance of the composite shear wall was analyzed. The results show that the lateral mechanical behavior of the composite shear wall shows a distinct two-stage characteristic. Specifically, it has a full hysteretic curve, slow strength degradation, positive energy dissipation capacity, and high ultimate displacement angle and displacement ductility. In addition, it is found that an increase in axial compression ratio can improve the ultimate bearing capacity, but this will lead to a rapid decrease in the bearing capacity in the second phase. Furthermore, the shear-to-span ratio mainly affects the failure mode of the composite shear wall, and the reasonable height-to-thickness ratio of the corrugated steel plate should vary from 500 to 800.

关 键 词：组合剪力墙 抗震性能 波形钢板 钢板剪力墙 有限元 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11