空间钢构架混凝土梁斜截面受剪性能分析  

Analysis of Shear Behavior of Oblique Cross-section ofConcrete Beams with Spacial Steel Frames

作　　者：张志鹏 唐兴荣[1] ZHANG Zhipeng;TANG Xingrong(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《常州工学院学报》2024年第1期10-19,共10页Journal of Changzhou Institute of Technology

摘　　要：由角钢和缀板焊接而成的空间钢构架替代传统绑扎钢筋骨架形成空间钢构架混凝土结构构件。为进一步研究空间钢构架混凝土梁的斜截面受剪性能,采用Abaqus软件,建立空间钢构架混凝土梁斜截面受剪性能的有限元分析模型,并对空间钢构架混凝土梁斜截面受剪性能进行模拟分析。分析结果表明,空间钢构架对混凝土梁的斜截面受剪承载力有利,随着剪跨比的减小、配箍特征值的增大其斜截面受剪承载力提高。基于已有的试验研究和模拟分析,采用极限平衡原理,考虑空间钢构架的有利作用,建立空间钢构架混凝土梁抗剪承载力的计算公式,公式的计算值与试验值吻合较好,可以作为空间钢构架混凝土梁斜截面受剪承载力计算公式。The spatial steel frame made of steel angles and plate welding replaces the traditional binding steel bar skeleton to form the spatial steel frame concrete structural member.In order to further study the shear behavior of spatial steel frame concrete beams,the finite element analysis model of the shear behavior of spatial steel frame concrete beams is established by using Abaqus software.The shear bearing capacity of diagonal section of concrete beam with spatial steel frame is analyzed.The analysis results show that the spatial steel frame is favorable to the shear bearing capacity of diagonal section of the concrete beam,the shear bearing capacity of the spatial steel frame concrete beam increases with the decrease of shear span ratio and the increase of the stirrup characteristic value.Based on the existing experimental studies and simulation analysis,the calculation formula of shear bearing capacity of the spatial steel frame concrete beam is established by limit equilibrium principle and considering the advantageous role of the spatial steel frame,the calculation value of the formula agrees well with the test value,which can be used as the calculation formula of the shear bearing capacity of the spatial steel frame concrete beam.

关 键 词：空间钢构架 混凝土简支梁 受剪性能 有限元分析 承载力计算公式 

分 类 号：TU398.9[建筑科学—结构工程]