核电工程双钢板混凝土剪力墙面外受弯性能

Out-of-plane flexural capacity of double steel plates and concrete infill composite shear walls for nuclear power engineering

为了研究核电工程双钢板混凝土组合剪力墙在面外荷载作用下的抗震性能,本文对6个剪力墙试件进行了低周往复荷载试验。制作的试件包括5个双钢板混凝土组合剪力墙试件和1个钢筋混凝土剪力墙试件。通过参数分析,研究了钢板厚度、竖向荷载和混凝土强度对双钢板混凝土组合剪力墙试件面外抗震性能的影响。试验结果发现:双钢板混凝土组合剪力墙试件具有良好的承载力和抗侧刚度,但比钢筋混凝土剪力墙在破坏阶段的延性要差。钢板厚度和竖向荷载都对双钢板混凝土组合剪力墙试件的面外抗震性能有较大影响,而混凝土强度对其影响不明显。利用ABAQUS有限元软件对双钢板混凝土组合剪力墙面外荷载试验进行了模拟,试件极限荷载的模拟结果和试验结果比较吻合。在试验和数值分析的基础上提出了双钢板混凝土组合剪力墙面外受弯承载力的计算公式,为核电工程双钢板混凝土组合剪力墙的设计提供参考。

; Out-of-plane cyclic loading tests of six shear wall specimens were conducted to study the out-of-plane seismic behavior of double steel plates and concrete infill composite shear walls （SCW） for nuclear power engineer-ing. Five SCW specimens and one reinforced concrete （RC） shear wall specimen were investigated. The effect of the parameters, namely, the thickness of the steel plate, the vertical load, and the strength grade of concrete, on the out-of-plane seismic performance of a double steel plates concrete infill SCW specimen were analyzed experi-mentally. The SCW specimens had good bearing capacity and lateral stiffness. However, the ductility of SCW spec-imens was worse than that of RC shear walls in the failure stage. The thickness of steel plate and the vertical load significantly influenced the out-of-plane seismic performance of SCW, but the effect of the strength grade of con-crete was not obvious. The out-of-plane cyclic loading test of SCW was simulated by using the finite element soft-ware ABAQUS. Simulation results of ultimate load have good agreement with the test results. On the basis of the test and simulation results, a formula of the flexural capacity of the SCW was proposed in this paper. This research can be a reference for the design of SCW for nuclear power engineering.