生态复合墙结构抗连续倒塌的分析研究

发布时间：2018-01-30 06:51

本文关键词： 生态复合墙结构等效斜撑单元连续倒塌备用荷载路径法数值分析　出处：《西安建筑科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：为了适应我国生态文明建设以及墙体材料改革的发展趋势，研发的生态复合墙结构是一种新型住宅结构体系，具有广阔的建筑市场和发展前景，目前已经在陕西、河北、宁夏以及河南等地区得以推广应用。当建筑物受到爆炸、地震等偶然作用时，结构将会发生连续倒塌。为了研究生态复合墙结构的连续倒塌机制及抗倒塌方法，论文选取大型通用有限元软件SAP2000对生态复合墙结构的抗连续倒塌性能进行了数值分析及研究。（1）论文针对生态复合墙结构，结合建筑抗连续倒塌的分析方法，提出了生态复合墙结构倒塌分析的具体方法与详细流程。依据生态复合墙结构的基本力学性能，选取刚架-等效对角斜撑力学模型,采用备用荷载路径法进行倒塌数值研讨，为生态复合墙抗连续倒塌研究提供思路。（2）建立生态复合墙结构的平面计算模型，拆除不同位置的竖向构件模拟结构的初始破坏，分析了生态复合墙剩余结构的传力状况。结果表明生态复合墙结构平面倒塌机制在于：等效对角斜压杆首先失效，，引起连接柱失稳破坏，使结构发生倒塌，而且角柱失效的破坏程度最为严重，中柱较轻。并基于平面内的倒塌分析结果，提出了适合生态复合墙结构倒塌评价的准则。（3）考虑结构的空间作用，结合提出的评价准则，对生态复合墙结构工程实例进行了抗倒塌分析。拆除结构首层四个不同位置的竖向承重构件模拟局部的初始破坏，对比分析生态复合墙结构在局部构件破坏后的整体抗倒塌能力，结果表明生态复合墙结构具有较好的抗倒塌能力。基于结构抗倒塌的数值分析结果，给出了有效提高生态复合墙结构抗连续性倒塌能力的设计建议，对生态复合墙结构的应用具有一定的效用。
[Abstract]:In order to adapt to the development trend of China's ecological civilization construction and the reform of wall materials, the ecological composite wall structure is the development of a new residential structure system, with the construction market and broad prospects for development, is now in Shaanxi, Hebei, Ningxia and Henan and other regions to promote the application. When the building by the explosion, earthquake and other accidental action the structure, will happen collapse. In order to study the mechanism of progressive collapse of the ecological composite wall structure and anti collapse method, this paper selects the large universal finite element software SAP2000 on the ecological composite wall structure progressive collapse resistance has been studied and analyzed numerically.
(1) according to the ecological composite wall structure, combined with the construction of anti progressive collapse analysis methods, put forward the method of analysis and detailed process of collapse of the ecological composite wall structure. Based on the basic mechanical properties of ecological composite wall structure, select the rigid frame equivalent diagonal strut mechanical model for collapse numerical study by the alternate load path method that is the ecological composite wall to resist progressive collapse of ideas.
(2) establish a plane model of ecological composite wall structure, simulating the structure of initial demolition vertical members in different positions, analysis of the ecological composite wall structure of the residual force transmission condition. Results show that the ecological composite wall structure plane collapse mechanism: equivalent diagonal baroclinic stem first failure, caused by failure of the connecting column. The structure collapsed, and the extent of the damage. The failure of the most serious, in the column is lighter. And analysis of collapse plane based on the results, puts forward the ecological composite wall structure collapse evaluation criterion.
(3) considering the spatial structure, combined with the proposed evaluation criteria, the ecological composite wall structure project of the anti collapse analysis. The first layer removal structure four different positions of the vertical components of the local simulation of the initial failure, comparative analysis of overall capacity of ecological composite wall structure in the bureau member after the destruction of the collapse. The results showed that the ecological composite wall structure has a good ability to resist collapse. The results of the numerical analysis of structural collapse resistance based on the design suggestions are provided to effectively improve the ecological composite wall structure progressive collapse resistance ability, has certain effect on the application of ecological composite wall structure.

【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398;TU312.3

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