“一”字形短肢剪力墙加暗撑时的仿真分析  

Simulation Analysis of I-Shaped Short-Leg Shear Walls with Concealed Bracings

作　　者：李亚娥[1] 张瑞玲[1] 田孟鲁[1] 张兆瑾[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2014年第1期130-133,共4页Journal of Gansu Sciences

摘　　要：选用ABAQUS有限元分析软件,对4个普通短肢剪力墙和7个加暗支撑的短肢剪力墙模型进行了低周反复荷载作用下的受力性能研究,并在此基础上分析了混凝土等级与暗支撑箍筋直径对带暗支撑短肢剪力墙受力性能的影响.结果表明:加暗支撑可以明显提高短肢剪力墙的受力性能,SBW-500的屈服荷载、极限荷载比SW-500的分别提高了111%、119%,SBW-650的屈服荷载、极限荷载比SW-650的分别提高了37%、41%.对于带暗支撑的短肢剪力墙,随着混凝土等级的提高,试件的受力性能和延性性能均提高,但选用C30混凝土时综合性能较好;随着暗支撑箍筋直径的增大,试件受力性能也增大,但影响不大.According to the basic rules of the finite element theory and computer simulation theory and with the finite element analysis software ABAQUS, the mechanical behavior of the short-leg shear wall model with 4 common short-leg shear walls and 7 ones with concealed bracings was researched when the model was subject to low cyclic loading,the influence of concealed bracings on the bearing capacity and duc- tility of common short-leg shear walls was analyzed, and moreover, the effect of concrete grades and con- cealed bracing stirrup diameter on the mechanical behavior of common short-leg shear walls were investiga- ted. The result shows that concealed bracings can obviously improve the mechanical behavior of short-leg shear walls,the yield load and ultimate load of SBW-500 increases by 111% and 119% compared with that of SW-500,and the yield load and ultimate load of SBW-650 increases by 37% and 41% compared with that of SW-650. For the short-leg shear walls with concealed bracings,with the increase of concrete grades,the mechanical behavior and ductility of the specimens are both improved,but when C30 concrete is used,the o- verall performance is better; and with the increase of concealed bracing stir-up diameter,the mechanical be- havior of the specimens is affected,but to a very small extent.

关 键 词：有限元理论 ABAQUS 短肢剪力墙 暗支撑 延性性能 

分 类 号：TU973.31[建筑科学—结构工程]