不锈钢管混凝土桁架受力性能与设计方法研究

项目名称： 不锈钢管混凝土桁架受力性能与设计方法研究

项目编号： No.51478047

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 陈誉

作者单位： 长江大学

项目金额： 80万元

中文摘要： 不锈钢管混凝土桁架结构由于具有外观好、耐久性好、维护费用低和耐腐蚀性好等优点，在环境恶劣的海洋平台、海岸建筑、桥梁以及一些对耐久性要求较高的重要建筑中具有较好的应用前景。项目综合运用试验研究、理论分析和数值模拟等手段揭示不锈钢管混凝土桁架结构体系的静力和动力性能。研究形状参数和几何参数对不锈钢管混凝土桁架的极限承载力和刚度的影响，构建桁架结构的极限承载力和刚度的参数化模型，建立可供工程设计应用的桁架极限承载力和刚度计算公式。研究不锈钢管混凝土桁架在动力荷载作用下的失效机理和滞回性能，构建不锈钢管混凝土桁架滞回模型。综合试验研究、理论分析和数值模拟结果，并结合我国现行可靠度设计规范规定的可靠度水准，提出不同功能状态要求的不锈钢管混凝土桁架结构体系设计方法和合理构造措施用于指导工程设计。

中文关键词： 不锈钢管混凝土桁架；受力性能；设计方法；试验研究；数值模拟

英文摘要： Concrete-filled stainless steel tubular truss are being used increasingly for offshore platform, coastal building, bridge and high durability requirement important buildings in recent years due to the aesthetic appearance, high durability, low maintenance fee and excellent corrosion resistance.The project has a systematic research on static and seismic behavior of concrete-filled stainless steel tubular truss by the ways of experimental study, theory analysis and numerical simulation.The project studies the effect of shape parameters and geometric parameters on ultimate capacity and stiffness of concrete-filled stainless steel tubular truss, constructing parametric models of ultimate capacity and stiffness of truss, establishes calculation equation of ultimate capacity and stiffness of concrete-filled stainless steel tubular truss for project design application. Failure mechanism and hysteretic behavior of concrete-filled stainless steel tubular truss under dynamic load are investigated and hysteretic model of concrete filled stainless steel tubular is constructed.Synthesizing the results of experimental study,theory analysis and numerical simulation, and conbined with reliablility level regulated by the current reliability chinese design code, design method and reasonable structure measures of concrete-filled stainless steel tubular truss in different function states are proposed. Research results can be used to guide the engineering design of the truss.

英文关键词： concrete-filled stainless steel tubular truss;mechnical property;design method;experimental research;numerical simulation