基于“破坏—安全”理念的型钢混凝土柱防火设计

发布时间：2018-01-03 17:17

本文关键词：基于“破坏—安全”理念的型钢混凝土柱防火设计　出处：《煤炭工程》2014年10期 　论文类型：期刊论文

【摘要】：文章基于"破坏—安全"抗震理念,针对型钢混凝土柱在火灾情况下由于表皮混凝土的"爆裂"而致使承载力及耐火极限大幅下降的情况,对其进行了优化设计。通过预定"爆裂"位置同时对该位置进行预加固与防火处理来保证即便混凝土脱落、型钢暴露在外,型钢混凝土柱仍具有保证结构整体及内部人员安全的承载力与耐火极限,并采用理论推导与ANSYS有限元分析软件对优化方法进行验证。结论表明对型钢混凝土柱做预先加固与防火处理可以提高型钢混凝土柱在火灾情况下的刚度及耐火极限,从而提高结构在火灾这种突发状况下的安全性。
[Abstract]:Based on the anti-seismic concept of "failure and safety", this paper aims at the situation that the bearing capacity and fire resistance limit of steel reinforced concrete columns under fire are greatly reduced due to the "burst" of the skin concrete. The optimized design is carried out. The pre-reinforcement and fire prevention are carried out at the same time to ensure that the section steel is exposed even if the concrete falls off. Steel reinforced concrete columns still have the bearing capacity and fire resistance limit to ensure the safety of the whole structure and the internal personnel. The theoretical derivation and ANSYS finite element analysis software are used to verify the optimization method. The conclusion is that the reinforcement and fire prevention of steel reinforced concrete columns can improve the stiffness of steel reinforced concrete columns in case of fire. And fire resistance. In order to improve the safety of the structure in the case of fire emergencies.
【作者单位】：河北工程大学;中国寰球工程公司华北规划设计院;
【分类号】：TU398.9
【正文快照】： 型钢混凝土(Steel Reinforced Concrete,简称SRC)结构是指在混凝土中主要配置型钢,并配有一定的横向箍筋及纵向受力钢筋的结构。在耐火性能方面,和钢结构相比,型钢混凝土构件内部的型钢由于受到其外围混凝土的保护,升温较慢,因此构件具有良好的防火性能。[1,2]。“破坏—安全

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