强震下混凝土剪力墙受弯模拟及测试实验研究  

Experimental Study on Flexural Capacity of Concrete Shear Walls under Strong Earthquake

作　　者：戴勤友 张正瑞 DAI Qinyou;ZHANG Zhengrui(College of Architectural Engineering, Luzhou Vocational and Technical College, Luzhou 646000, Sichuan, China;Sichuan University of Science & Engineering, Zigong 643000, Sichuan, China)

机构地区：[1]泸州职业技术学院建筑工程学院,四川泸州646000 [2]四川轻化工大学,四川自贡643000

出　　处：《地震工程学报》2020年第2期337-344,共8页China Earthquake Engineering Journal

基　　金：国家自然科学基金项目(51901145)。

摘　　要：为提高混凝土剪力墙受弯性能计算的准确度,开展强震下混凝土剪力墙受弯性能试验研究。选取1个混凝土剪力墙对比试件和3个测试试件作为研究对象,对试件施加垂直荷载和水平荷载,模拟强烈地震作用力。试验前期准备工作完成后,建立分离式有限元模型,通过计算混凝土在受压和受拉状态下的损伤弹塑性刚度,完成对有限元模型中混凝土塑性损伤分析,在此基础上,计算混凝土剪力墙受弯承载力。利用有限元模型对3个测试试件进行模拟试验,结果表明,强烈地震后3个试件的荷载-位移曲线均与实际位移值接近,且混凝土剪力墙受弯承载力试验结果与实际值的误差在2%以内,表明试验研究方法具有一定的可行性,数值模拟结果较为准确。Experimental work on the flexural capacity of concrete shear walls under a strong earthquake was conducted to improve the measurement accuracy of the flexural capacity of concrete shear walls.The study samples were chosen as one concrete shear wall contrast specimen and three test specimens,and the vertical load and horizontal load were applied to simulate the strong seismic intensity.After completing the preparatory work of the test,the separated finite element model was established.In the finite element model,the plastic damage analysis of concrete was completed by calculating the elastic-plastic stiffness of concrete under compression and tension.Based on this,it calculates the flexural capacity of the concrete shear wall.The finite element model was applied to the three test specimens to carry out the simulation test.The simulation results showed that the load-displacement curves of the three specimens are similar to the actual displacement values after a serious earthquake,and the error between the test result and the actual value is less than 2%,which means that the experimental testing method has some viability and shows that the numerical simulation results are accurate.

关 键 词：强烈地震 垂直荷载 水平荷载 混凝土剪力墙 塑性损伤 有限元模型 受弯承载力 

分 类 号：TU375[建筑科学—结构工程]