Temperature Field Analysis of SRC Column to SRC Beam Joints Subjected to Heating and Cooling Fire
首发时间:2011-03-14
Abstract:Experiments were performed on steel reinforced concrete (SRC) column to SRC beam joints subjected to fire scenarios including heating and cooling phases, and temperatures in the junction and areas certain distance away from the junction were measured during both the heating and cooling phases. The experiments tested the influence of heating time on the temperature distributions at various sections of the specimens. A three-dimensional finite element analysis (FEA) model was developed to calculate the temperature field of the SRC column to SRC beam joints. The predicted temperatures show good comparison with the test results. Based on the finite element analysis, the differences of the temperature distributions in the joint zone and the non-joint zone are analyzed and its influence to the structural fire safety design is illustrated. One important conclusion from this study is the necessity to include cooling phase in structural safety design because it is in the cooling phase of fire that the majority of joint materials reached their peak temperature.
keywords: steel reinforced concrete (SRC) joint temperature FEA model
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升、降温火灾作用下型钢混凝土柱-型钢混凝土梁节点的温度场分析
摘要:进行了升、降温火灾作用下型钢混凝土柱-型钢混凝土梁节点的试验研究,获得了升、降温过程中试件节点区和非节点区的温度数据,研究了升温时间对试件不同截面温度分布的影响。建立了计算型钢混凝土柱-型钢混凝土梁节点温度场分布的三维有限元模型,计算结果与试验结果吻合良好。在有限元模型基础上,对升、降温过程中节点区和非节点区的温度分布及其对结构火安全设计的影响进行了分析。研究表明:由于节点大部分位置在火灾的降温阶段达到峰值温度,因此在进行型钢混凝土结构抗火设计时考虑火灾降温阶段的影响非常重要。
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No.4413268570931129****
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升、降温火灾作用下型钢混凝土柱-型钢混凝土梁节点的温度场分析
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