[1]傅传国,王广勇,王玉镯.钢筋混凝土框架节点抗火性能试验研究及理论分析[J].东南大学学报(自然科学版),2010,40(4):822-828.[doi:10.3969/j.issn.1001-0505.2010.04.030]
 Fu Chuanguo,Wang Guangyong,Wang Yuzhuo.Experimental and theoretical research on fire resistance behaviour of reinforced concrete joints[J].Journal of Southeast University (Natural Science Edition),2010,40(4):822-828.[doi:10.3969/j.issn.1001-0505.2010.04.030]
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钢筋混凝土框架节点抗火性能试验研究及理论分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第4期
页码:
822-828
栏目:
土木工程
出版日期:
2010-07-20

文章信息/Info

Title:
Experimental and theoretical research on fire resistance behaviour of reinforced concrete joints
作者:
傅传国 王广勇 王玉镯
山东建筑大学土木工程学院,济南 250101
Author(s):
Fu Chuanguo Wang Guangyong Wang Yuzhuo
School of Civil Engineering,Shandong Jianzhu University, Jinan 250101,China
关键词:
钢筋混凝土框架节点 抗火性能 试验研究 理论分析
Keywords:
reinforced concrete frame joints fire resistance behavior experimental research theoretical analysis
分类号:
TU317
DOI:
10.3969/j.issn.1001-0505.2010.04.030
摘要:
利用大型模拟火灾实验炉进行了钢筋混凝土足尺框架节点在恒定加载和ISO834标准升温耦合作用下的抗火性能试验,分析了试验节点的温度场分布规律、变形特点、混凝土爆裂现象、耐火极限及破坏特征.试验结果显示,所试验节点都是由于节点梁的加载端位移达到最大挠度而达到耐火极限,梁端荷载比对节点的耐火极限有明显影响; 接近耐火极限时,节点梁端在恒定竖向荷载作用下的竖向位移增长明显加快,并在较短时间内失去了承载能力,破坏带有一定的突然性.基于ABAQUS软件平台,开发了适用于钢筋混凝土框架节点火灾反应分析的梁单元用户材料模型及子程序,并对试验节点进行了全过程模拟分析,分析结果与试验结果吻合较好.
Abstract:
The large-scale joint specimens of reinforced concrete frames subjected to the standard ISO834 fire with constant load were tested. The temperature distributions, the deformations, the explosive spalling of concrete, the fire resistance and the collapse mechanism of the joint specimens were analysed. The test results show that all joints reach the ultimate limit of fire resistance due to beam ends of all joints reaching ultimate deflection, the load ratio of beam ends affecting the fire resistance of joints obviously; when being close to fire resistance limit state, the vertical displacement of beam ends increase rapidly, and the failure is sudden. Based on ABAQUS, a user material model and a subroutine for reinforced concrete frame joints analysis in fire are developed. The whole process simulation analysis results have good agreement with the test results.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 傅传国(1963—),男,博士,教授,sdfcguo@126.com.
基金项目: 国家自然科学基金资助项目(50678097,50978158)、山东省自然科学基金资助项目(Y2006F30).
引文格式: 傅传国,王广勇,王玉镯.钢筋混凝土框架节点抗火性能试验研究及理论分析[J].东南大学学报:自然科学版,2010,40(4):822-828. [doi:10.3969/j.issn.1001-0505.2010.04.030]
更新日期/Last Update: 2010-07-20