重型锅炉钢结构厂房结构体系研究

项目名称： 重型锅炉钢结构厂房结构体系研究

项目编号： No.51478263

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： 赵金城

作者单位： 上海交通大学

项目金额： 83万元

中文摘要： 和普通的高层建筑钢结构相比，重型锅炉钢结构厂房无论在结构布置还是承受荷载方面都有明显不同的特点，如双向跨度相当、无楼板、竖向荷载巨大、主要构件截面尺寸超大等。本项目采用理论研究、有限元分析以及模型试验相结合的方式对该类结构体系及其力学性能进行研究。首先，选取实际工程中应用的三种不同结构体系，采用有限元分析程序分别进行静力力学性能分析，比较结构内力、变形、整体稳定等性能的不同特征。有限元分析方法和分析结果的可靠性通过模型试验进行验证；其次，通过大量的有限元数值模拟，探索影响结构体系受力性能的主要参数如柱子数量、柱网间距、层高、节点连接形式等及其影响规律，在此基础上，探讨最优的结构体系；最后，针对该类结构的设计理论和设计方法，采用不同的结构分析方法进行结构分析计算，考察结构二阶效应的影响及其影响因素，采用理论分析和有限元模拟相结合的方式，探索节点刚域对结构受力以及构件计算长度的影响。

中文关键词： 多高层钢结构；空间钢框架；结构优化；试验研究；力学性能

英文摘要： Comparing with ordinary high-rise steel building, heavy steel boiler plant is a particular kind of steel structure with obviously different characters in structural arrangement and load patterns, such as equivalent two-way span, floorless, huge vertical load, and huge construction members. The research project is to study the structural system and its mechanical properties with theoretical research, finite element analysis and model experiment at the same time. Firstly, the static analysis of three types of steel structural system for boiler plant, which have been used in actual engineering projects, is performed using appropriate finite element program. The internal force distribution, deformation pattern, and overall stability performance of three structure systems will be carried out and compared with each other. Meanwhile the reliability of finite element analysis and its result will be proved by model experiments. Secondly, through a large number of finite element numerical simulation, the project is to explore the main parameters affecting the mechanical properties of different structural systems, such as the number of columns and arrangement, height between floors and connection form on joints, and then find out their influencing mechanism. The optimization of the structural systems can be discussed based on these study work. finally, different structural analysis method will be used to further study the design theory and method of such structures, and investigate the influence of second order effect on structure and its influencing factors. Then the influence of nodal rigid zone on mechanical behavior of structure and calculation length of members is explored using a combination of both theoretical analysis and finite element simulation.

英文关键词： steel structure;steel frame;Structure optimization;experimental investigation;mechanical property