空间钢构架混凝土梁抗剪承载力计算方法  

Calculation Method of Shear Capacity of Concrete Beam with Spatial Steel Frame

作　　者：刘龙震 LIU Longzhen(School of Civil Engineering,Suzhou University of Science and Technology)

机构地区：[1]苏州科技大学土木工程学院

出　　处：《广东建材》2025年第4期111-115,共5页Guangdong Building Materials

摘　　要：由角钢和缀条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。本文根据已有的试验结果,在考虑空间钢构架对混凝土的约束作用、剪跨比、尺寸效应等因素的情况下,基于变角桁架模型提出了适合空间钢构架混凝土梁的抗剪承载力计算公式。另外,在分析影响空间钢构架约束作用主要因素的基础上,引入综合影响系数以及缀条抗剪贡献增强系数w,提出了空间钢构架混凝土梁简化抗剪承载力计算公式,计算值与试验值吻合较好。Spatial steel frames welded by angles and strips replace the traditional tied steel reinforcement skeleton to form spatial steel framed concrete structural members.Based on the existing test results,this paper proposes a shear capacity calculation formula for concrete beams with spatial steel frames based on the variable angle truss model,taking into account the restraining effect of spatial steel frames on concrete,shear-to-span ratio,size effect and other factors.In addition,on the basis of analyzing the main factors affecting the restraining effect of spatial steel frame,the integrated influence coefficient μ and the enhancement coefficient of the shear contribution of strips w are introduced,and the simplified shear capacity calculation formula for concrete beams with spatial steel frame is proposed,and the calculated values are in good agreement with the test values.

关 键 词：空间钢构架 混凝土简支梁 抗剪承载力 

分 类 号：TU7[建筑科学—建筑技术科学]