基于LS-DYNA的高温环境下钢筋混凝土柱的变形形态仿真

发布时间：2018-01-08 00:11

本文关键词：基于LS-DYNA的高温环境下钢筋混凝土柱的变形形态仿真　出处：《河北大学》2017年硕士论文　论文类型：学位论文

【摘要】：火灾不仅会对人民生命财产、社会生产资源产生严重破坏,同时也会对建筑结构本身结构造成极大损害,并且经历火灾后产生的建筑垃圾也会对环境产生较大污染。钢筋混凝土结构凭借其合理的构造优势,现已普遍应用于各类建筑结构中。近年来,由于建筑物大规模化、高层化以及用途的复合化,建筑火灾发生的趋势逐年上升。目前来看,国内外对钢筋混凝土构件抗火性能的研究比较有限。因此,深入开展经历火灾后钢筋混凝土结构抗火性能的研究具有重要的工程意义。本文结合有限元软件对此进行了分析和研究。本文针对轴心受压钢筋混凝土构件在不同节点温度下的力学行为,使用有限元分析软件ANSYS、LS-DYNA模块进行仿真研究,分析了轴心受压钢筋混凝土构件的破坏形态,发现较常温环境,高温环境下工作的钢筋混凝土构件显现出温度效应,即承受相同数值轴向荷载时,高温环境下工作的钢筋混凝土柱应变有很大的增长。
[Abstract]:The fire will not only for people's life and property, social production resources and cause serious damage, but also may cause great damage to the building structure itself structure, and through the waste of building after fire will produce great pollution to the environment. The reinforced concrete structure with its reasonable structure, has been widely used in all types of building structures in recent years. And because the building of large-scale, complex high-rise building fire and use, the trend of rising year by year. At present, domestic and foreign research on fire resistance of reinforced concrete member is limited. Therefore, further research has reinforced concrete structure after fire fire resistance has important engineering significance. This paper analysis and Research on the combination of finite element software. The axial compression reinforced concrete members in different node temperature mechanical behavior, the use of The finite element analysis software ANSYS, the simulation of the LS-DYNA module, analyzed the damage form of axial compression reinforced concrete members, find a normal environment, reinforced concrete members under the environment of high temperature work shows that under the same temperature effect, numerical axial load, strain of reinforced concrete columns under the environment of high temperature work have great growth.

【学位授予单位】：河北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU375.3

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