火灾高温作用下钢结构倒塌分析

发布时间：2018-04-16 22:32

本文选题：钢结构 + 火灾　；参考：《工程力学》2014年S1期

【摘要】：为了研究结构在油气火灾条件下的连续倒塌行为,该文采用碳氢化合物燃烧的升温曲线,通过显式动力分析,对三层抗弯钢框架的完整失效过程进行了分析。给出了结构内部不同位置处构件内力、变形等随温度的变化情况。同时,采用标准升温曲线对结构进行加热,对比分析不同升温速度和最高温度对结构火灾行为产生的影响。分析结果表明,初始升温速率越快,达到的温度越高,结构就会越快的进入到失效状态,在分析研究中应注意对这两个因素加以考虑。
[Abstract]:In order to study the continuous collapse behavior of structure under the condition of oil and gas fire, the complete failure process of three-layer bending steel frame was analyzed by using the heating curve of hydrocarbon combustion and explicit dynamic analysis.The variation of internal force and deformation with temperature at different positions of the structure is given.At the same time, the standard heating curve is used to heat the structure, and the effects of different heating speed and maximum temperature on the fire behavior of the structure are compared and analyzed.The results show that the faster the initial heating rate, the higher the temperature reached, the faster the structure will enter into the failure state, and the two factors should be taken into account in the analysis and research.
【作者单位】：哈尔滨工程大学航天与建筑工程学院;
【基金】：国家自然科学基金项目(11272096) 高等学校博士学科点专项科研基金项目(20112304110015) 中央高校基本科研业务费项目(HEUCF130216)
【分类号】：TU391

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