两边连接内加劲双钢板剪力墙抗剪承载力研究  

Study on Shear Performance of Double Steel Plate Shear Wall with Internal Stiffeners Connected at Two Sides

作　　者：徐亚飞[1] 谭平[1] 陈林 周福霖[1,2] XU Yafei;TAN Ping;CHEN Lin;ZHOU Fulin(College of Civil Engineering,Hunan University,Changsha 410082,China;Engineering Seismic Research Center,Guangzhou University,Guangzhou 510405,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]广州大学工程抗震研究中心,广东广州510405

出　　处：《湖南大学学报（自然科学版）》2023年第11期120-127,共8页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51978185)。

摘　　要：为研究两边连接内加劲双钢板剪力墙的抗剪承载力,采用ABAQUS程序进行36个不同宽高比、不同高厚比的两边连接内加劲双钢板剪力墙的有限元分析.分析结果表明,采用厚板或宽高比较大的钢板均可以使钢材达到较高的平均应力水平;峰值平均剪应力与屈服平均剪应力的比值随高厚比或宽高比变化的规律不明显,强屈比随高厚比变化介于1.17~1.21之间,随宽高比的变化介于1.16~1.21之间,平均值均为1.19;给出了宽高比为0.33~2.00、高厚比为200~750的两边连接内加劲双钢板剪力墙屈服平均剪应力计算公式;采用结构力学位移计算原理推导的理论计算公式可准确计算内加劲双钢板剪力墙的初始刚度和初始等效剪切模量.建立了两边连接内加劲双钢板剪力墙的等效交叉杆模型,验证了等效交叉杆模型可以精准地模拟不同宽高比、不同高厚比两边连接内加劲双钢板剪力墙的屈服平均剪应力和初始刚度,表明可以采用等效交叉杆模型简化两边连接内加劲双钢板剪力墙的设计与分析.To further study the shear capacity of double steel plate shear walls with internal stiffeners connected at two sides,the finite element analysis of 36 double steel plate shear walls with different width-depth ratios and different height thickness ratios,which are internally stiffened with two-side connections,is carried out by using ABAQUS program.The analysis results showed that the use of thick plates or plates with a larger width-depth ratio can make the steel reach a higher average stress.The ratio of peak mean shear stress to yield mean shear stress has no obvious change rule with height-thickness ratio or width-depth ratio.The variation of strain-hardening ratio with height thickness ratio is between 1.17 and 1.21,and the variation with width-depth ratio is between 1.16 and 1.21,with an average value of 1.19.The formula for calculating the yield mean shear stress of double steel plate shear walls with internal stiffeners connected at both sides is given.The theoretical calculation formula derived from the displacement calculation principle of structural mechanics can accurately calculate the initial stiffness and initial equivalent shear modulus of an internally stiffened double steel plate shear wall.In addition,the equivalent cross brace model of double steel plate shear walls with internal stiffeners connected at both sides is established.It is verified that the equivalent cross brace model can accurately simulate the yield mean shear stress and initial stiffness of double steel plate shear walls with internal stiffeners connected at both sides with different width-depth ratios and different height-thickness ratios.It is shown that the design and analysis of double steel plate shear walls with internal stiffeners connected at both sides can be simplified by using the equivalent cross brace model.

关 键 词：钢板剪力墙 抗剪承载力 剪应力 强屈比 等效交叉杆模型 

分 类 号：TU392.1[建筑科学—结构工程] TU392.4