基于结构损伤的建筑火灾再现耦合问题的数值计算方法研究

项目名称： 基于结构损伤的建筑火灾再现耦合问题的数值计算方法研究

项目编号： No.11272214

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 杨培中

作者单位： 上海交通大学

项目金额： 78万元

中文摘要： 建筑火灾发生频繁，事故造成的损失及影响巨大。因此，建筑火灾再现以及建筑结构火灾后的安全性研究就显得非常迫切和必要。本项目拟紧紧围绕"基于结构损伤的建筑火灾再现"这个耦合动力学问题，对火-热-结构耦合理论、三维精细建模方法、再现优化设计方法、并行计算方法和应用实例验证进行深入研究。拟以多物质任意拉格朗日-欧拉理论为基础，创建建筑火灾再现的三维精细火动力学模型、热传递模型和建筑结构模型；建立有限体积法和多物质任意拉格朗日-欧拉法相结合的数值计算方法；开发以结构损伤/变形和火场温度为目标的再现优化设计方法；建立耦合计算负荷平衡的并行计算方法；从而形成具有创新性和系统性的建筑火灾再现火-热-结构耦合问题数值计算的理论与方法。本项目可以应用于建筑火灾的快速调查和再现，缩短建筑火灾安全设计周期，提高建筑火灾安全性能。因此，本项目具有很大的理论意义和广泛的应用前景。

中文关键词： 建筑火灾；动力学；结构损伤；并行计算；三维精细建模

英文摘要： Building fires come frequently and cause great loss and social influence, so it is essential to study the reconstruction of building fire and the building safety after fire. Focusing on the coupling dynamics problem of "Reconstruction of building fire based on structural damage", this project will make detailed study on the fire-thermal-structure coupling theory, the 3D fine modeling method, the reconstruction optimization design method, the parallel computation method, and the application and verification. Based on the ALE theory, the 3D fine dynamics model, the thermal model and the building structural model will be created for the reconstruction of building fire. Based on the finite volume method and the multi-material ALE method, the numerical computation method will be developed. Taking the structural damage/deformation and the temperature as the target, the reconstruction optimization design method will be developed. Based on the load balancing in the coupling computation, the parallel computation method will be created. Therefore, this project will develop an original and systematic theory and method in the numerical simulation on the fire-thermal-structure coupling problem in the reconstruction of building fire. It can be applied into the rapid investigation and reconstruction of building fire, shortenin

英文关键词： Building Fire；Dynamics;；Structural Damage；Parallel Computation；3D Fine Modeling