地震环境下钢筋混凝土箱梁复合受力特性分析  

Composite Mechanical Characteristics of Reinforced Concrete Box Girders in Earthquake Environments

作　　者：刘觅[1] 高亮[2] LIU Mi;GAO Liang(Department of Civil Engineering,Sichuan College of Architectural Technology,Deyang 618000,Sichuan,China;School of Architectural and Mechanical Engineering,Chifeng University,Chifeng 024000,Neimenggu,China)

机构地区：[1]四川建筑职业技术学院土木工程系,四川德阳618000 [2]赤峰学院建筑与机械工程学院,内蒙古赤峰024000

出　　处：《地震工程学报》2018年第4期665-670,共6页China Earthquake Engineering Journal

基　　金：四川省自然科学基金(14ZB0267);四川省教育厅重点项目(SCKY2015-04)

摘　　要：利用传统有限元分析法对地震环境下钢筋混凝土箱梁复合受力特性分析时,采用专家经验进行配筋,存在较强的主观意识,导致获取的复合受力特性分析结果存在偏差。根据以往的实验研究参数结合国家对混凝土桥梁参数的限制条件,构建地震环境下钢筋混凝土箱梁复合受力实验模型。设定实验模型尺寸,根据模型尺寸选择模型材料,采用圆钢与角钢搭建跨梁连续支座,融合反力架与千斤顶设计实验加载方案;根据方案中得出的配筋计算结果,获取地震环境下钢筋连续箱梁复合受力实验模型的科学配筋方案。实验结果表明,该实验模型可对地震环境下钢筋混凝土箱梁复合受力特性进行全面、准确分析。Expert experience is required to determine reinforcement distribution when the traditional finite element analysis method is used to analyze the composite stress characteristics of reinforced concrete box girders in earthquake environments.However,such an approach is highly subjective and will cause the deviation of the analytical results of the obtained composite force characteristics.Therefore,an experimental model of the composite force of reinforced concrete box girders under earthquake conditions is constructed.In this work,the size of the experimental model is set in accordance with previously established experimental parameters and the national restrictions on the parameters of concrete bridges.The experimental model material is selected.The continuous support of the span beam is built with round steel and angular steel,and the experimental loading scheme is designed.Then,a scientific reinforcement scheme for the experimental model of the composite force of reinforced continuous box girders in an earthquake envi ronment is obtained.Experimental results show that the experimental model can comprehensively and accurately analyze the composite force characteristics of reinforced concrete box girders in an earthquake environment.

关 键 词：地震环境 钢筋混凝土 实验模型 箱梁 复合受力特性 配筋 

分 类 号：TU375.1[建筑科学—结构工程]