应用简化的软化桁架模型设计钢筋混凝土短牛腿  

Design for the RC Short Corbel with a Simplified Softened Truss Model

作　　者：刘华新[1] 毕重[1] 赵琳[1] 

机构地区：[1]辽宁工业大学土木建筑系,锦州121001

出　　处：《武汉理工大学学报（交通科学与工程版）》2008年第2期298-300,共3页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(批准号:50378010);辽宁省教育厅科研基金项目资助(批准号:200320085)

摘　　要：阐述了简化的软化桁架模型的传力途径、设计步骤.用简化的软化桁架模型对钢筋混凝土短牛腿进行抗剪强度分析和设计,考虑的参数包括混凝土强度、剪跨比和水平箍筋的数量.通过对一个钢筋混凝土短牛腿的实例进行了验算,与混凝土结构设计规范(GB50010-2002)规定方法的计算结果是一致的,证明了所提出的简化的软化桁架模型的有效性、实用性.A simplified softened truss model originated from the truss concept and satisfied equilibrium, compatibility, and the constitutive laws of cracked reinforced concrete, is expounded with its transitive path and design procedure. A simplified softened truss model for design and analyses of the shear strength of RC short corbels is proposed, the parameters reviewed include the concrete strength, the shear span-depth ratio, and the amount of horizontal hoop. It is therefore recommended that the cur- rent shear design procedures for RC short corbels be reformed and utilized to incorporate with the actual shear-resisting mechanisms as postulated by the simplified softened truss model. The calculated values are in good agreement with the check values.

关 键 词：软化桁架模型 短牛腿 抗剪强度 混凝土强度 剪跨比 水平箍筋 

分 类 号：TU311.4[建筑科学—结构工程]