钢筋混凝土牛腿结构拉压杆模型及配筋设计  

Strut-and-tie Model for Reinforced Concrete Corbels and Reinforcement Design

作　　者：李树山[1,2] 高丹盈[2] 解伟[1] 

机构地区：[1]华北水利水电学院土木与交通学院,郑州450011 [2]郑州大学新型建材与结构研究中心,郑州450002

出　　处：《土木建筑与环境工程》2013年第S1期36-39,61,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然基金项目(50779018);郑州市科技领军人才计划(112PLJRC354)

摘　　要：美国混凝土结构规范(ACI 318-08)将拉压杆模型设计方法作为规范性附录,用于指导混凝土结构D区的设计。首先介绍拉压杆模型构成,分析按中国规范(GB 50010-2010)的设计参数(荷载、混凝土强度、钢筋强度)设计时,压杆、拉杆及节点区内力的计算,提供了设计步骤。按照中国规范参数,对牛腿结构进行拉压杆模型设计,对比分析了按建议方法进行设计时与按ACI 318-08规范设计时安全度的差别。算例分析表明,按建议的拉压杆方法进行牛腿结构设计,力学概念清晰,计算简便,与中国规范规定设计方法的安全度水平相当,可用于钢筋混凝土牛腿结构的设计。In American code for design of Concrete Structures(ACI 318-08),the strut-and-tie model method was used as a normative appendix for D-region design of reinforced concrete members.The constituent of the strut-and-tie model was introduced.Calculation of internal forces in struts,ties and node zone were proposed according to the design parameters(loading,concrete strength,steel strength) of the current Chinese code(GB 50010-2010).Then the design procedure was provided.Strut-and-tie model design method for reinforced concrete corbels was proposed following Chinese code parameters which degree of safety was compared with in ACI 318-08 through an example.The compared result shows that the proposed method can be used for the design of reinforced concrete corbels with clearer mechanical concepts and easier calculations.

关 键 词：钢筋混凝土牛腿 D区 拉压杆模型 配筋设计 安全度 

分 类 号：TU375.1[建筑科学—结构工程]