钢管再生骨料混凝土柱的基本力学性能及抗震性能研究

项目名称： 钢管再生骨料混凝土柱的基本力学性能及抗震性能研究

项目编号： No.51278129

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 冯文贤

作者单位： 广东工业大学

项目金额： 80万元

中文摘要： 建筑废弃物利用是建筑业节能减排的一个重要方面，结构的抗震设计是结构安全的核心问题之一。本项目的研究对象为一种再生材料结构，即废旧混凝土填充的钢管柱结构体系，其重要特点是废旧混凝土高附加值再生利用。在现有研究基础上，开展钢管再生骨料混凝土柱材料和几何参数的优选原则研究、基本受力性能分析和试验研究、抗震性能研究、非线性计算模型分析等。给出钢管再生骨料混凝土柱材料和几何参数的优选原则，研究钢管再生骨料混凝土柱的强度、刚度、滞回特征、应变和破坏模式等性能，研究各几何参数、材料参数等对钢管再生骨料混凝土柱承载力、刚度和延性等的影响，研究钢管和再生骨料混凝土的应力状态以及其相互作用，研究钢管再生骨料混凝土柱在地震作用下的耗能性能和阻尼特性，分析钢管再生骨料混凝土柱不同受力阶段的刚度计算方法，定量分析钢管再生骨料混凝土柱的性能指标，为钢管再生骨料混凝土柱结构的抗震设计提供理论依据。

中文关键词： 再生混凝土；力学性能；抗震性能；低周反复试验；无缝钢管

英文摘要： Utilize of building waste is one of the important aspects of building industry. Anti-seismic property of structures is one of the key problems of structural safety. This project focuses on the research of columns, filled with recycled concrete aggregates and confined with steel tubus, which stand for a new material structure. The practical purpose of the research is the high value utilize of waste concrete aggregates. Based on the research foundation obtained up to now, the research work of this project includes the optimal selection of gemetic and material parameters, the analysis and test of basic mechanical properties, the analysis of anti-seismic property, the analysis of nonlinear calculation model of steel tubular columns filled with recycled aggregates. The research results will give out the rules of optimal selection for gemetric and material parameters, revel the strength, stiffness, viscosity property, strain and fracture modes. The effects of geometric and material parameters on load bearing capacity, stiffness and duribility of recycled aggregate columns confined with steel tubes will be presented. Both the stress distribution of steel tube as well as concrete and the interaction of them will also be studied in this project. The power dissipation and damping characteristic of the recycled aggregate c

英文关键词： recycled aggreagte concrete；mechanical behaviour；seismic performance；low cyclic test；seamless steel tube