项目名称: 现代木-混凝土组合结构桥梁设计理论及应用基础研究
项目编号: No.51478485
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: 贺国京
作者单位: 中南林业科技大学
项目金额: 90万元
中文摘要: 随着经济的发展和社会的进步,人们越来越关注建筑的生态和可持续发展。现代木-混凝土组合结构,木材受拉,混凝土受压,能充分发挥两种材料各自的优越性能,克服木结构和混凝土结构自身的诸多不足,已成为一种极具潜力的新型组合结构。在荷载作用下,保证两种材料共同受力和变形协调是充分发挥其承载能力的关键。现代木-混凝土组合结构桥梁的研究和应用尚处于起步阶段,设计理论和设计方法亟待完善。本项目将选取两类典型的柔性和刚性剪力连接件,通过大量的组合构件试验研究,揭示现代木-混凝土组合结构共同受力机理和破坏模式;基于能量原理,通过非线性理论分析和有限元数值模拟,建立现代木-混凝土组合结构桥梁设计理论;通过组合结构桥梁足尺模型试验,验证现代木-混凝土组合结构桥梁设计理论。本项目的研究,将完善该类新型组合结构桥梁设计理论,拓展其应用范围,具有重要的理论意义和广阔的实用价值。
中文关键词: 木-混凝土;组合结构;桥梁;设计理论;试验研究
英文摘要: With the development in economy and the progress in society, the ecology and sustainable structures are paied more and more attentions. Modern timber-concrete composite(TCC) structure has vast potential as a sustainabl new composite stucture.The advantages of both materials can be exploited because bending and tensile forces are resisted primarily by the timber and compression by the concrete. To sufficently use load-bearing capacity of TCC structures, it is important to ensure both materials act efficiently. The research and application of TCC bridges are in the early stage around the world. The failure mechanism and models will be investigated by a lot of tests on TCC specimen with flexible and rigid connection. Futhermore, based on the energy principle, the design theory for TCC bridges will be established by non-linear analysis and FEM numerical simulation. At last, the design methods of TCC bridges will be given by full scale model test. The researches for TCC bridges in this project are very significant in design theory and valuable in application.
英文关键词: timber-concrete;composite-structure;bridge;design theory;experimental study