小剪跨比深梁受剪性能有限元模拟  

FINITE ELEMENT SIMULATION ON THE SHEAR PERFORMANCE OF DEEP BEAM WITH A SMALL SHEAR-SPAN RATIO

作　　者：赵天俊[1] 李鹏宇[1] 

机构地区：[1]长安大学建筑工程学院,西安710064

出　　处：《低温建筑技术》2017年第3期47-50,共4页Low Temperature Architecture Technology

摘　　要：设计了两根跨高比均为2,剪跨比分别为0.25、0.75的钢筋混凝土深受弯构件,基于ABAQUS有限元软件对其受剪性能进行了模拟分析,并将模拟结果与美国ACI、欧洲EC2、加拿大CSA以及我国现行混凝土结构设计规范进行对比。研究表明:深梁受剪承载力随着剪跨比的增大而减小,其破坏模式为支座与加载板之间的混凝土剪切破坏,我国现行规范建议的公式偏于保守。Two reinforced concrete beams with a span-to-depth ratio of 2 were designed, and theirs shear-span ratio were 0.25 and 0.75, respectively. The finite element software ABAQUS was employed to analyze the shear performance, and then the simulation results were compared with some codes to design concrete structures that were conducted by America ACI, European EC2, Canadian CSA and Chi- na, respectively. These results show that the shear capacity of deep beams decreases with the increase of shear span ratio, and the destruction mode is the shearing failure of the concrete between the beating and the loading plate, and the formulation suggested by current code in China is conservative.

关 键 词：深受弯构件 受剪性能 剪跨比 

分 类 号：TU375[建筑科学—结构工程]