摘要
以农村地区大量现存的墙体承重类夯土结构房屋为研究对象,建立有限元分析模型,利用子空间迭代法计算结构的自振周期和振型;通过地震反应谱分析探讨了此类结构在地震作用下的受力变形特点。分析结果表明:结构在纵向地震作用下位移最大;纵横墙连接处,尤其是檩条和墙体连接处是结构的脆弱部位,这些部位的失效将会导致屋盖的破坏甚至是整个结构的倒塌。文中的研究结果将为此类房屋的建造和改造提供技术参考。
This paper takes the rammed earth wall bearing buildings massively existing in rural areas as the research object to establish a model of finite element analysis. The subspace iteration method is used to calculate natural periods and modes of vibration. The stresses and deformation characteristics of the whole building are obtained through seismic response spectrum analysis. The analysis indicates that the structure has its biggest displacement under longitudinel vibration and at the joint between longitudinal and transversal walls, especially the position between a purlin and a wall is the weakest structural part, the damage of which will lead to the failure of a roof and furthermore the collapse of a whole structure. The studied result of this paper will provide a reference for construction and improvement of such buildings
出处
《世界地震工程》
CSCD
北大核心
2009年第2期36-40,共5页
World Earthquake Engineering
基金
国家"十一五"科技支撑计划课题(2006BAJ04A02)
关键词
夯土结构
有限元分析
地震反应谱
rammed earth structure
finite element analysis
seismic response spectrum
