[1]朱筱俊,李向民,杨建,等.预制复合保温墙体抗火性能试验研究[J].东南大学学报(自然科学版),2017,47(6):1208-1215.[doi:10.3969/j.issn.1001-0505.2017.06.020]
 Zhu Xiaojun,Li Xiangmin,Yang Jian,et al.Experimental study on fire resistance behaviors of prefabricated composite thermal insulation walls[J].Journal of Southeast University (Natural Science Edition),2017,47(6):1208-1215.[doi:10.3969/j.issn.1001-0505.2017.06.020]
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预制复合保温墙体抗火性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第6期
页码:
1208-1215
栏目:
土木工程
出版日期:
2017-11-20

文章信息/Info

Title:
Experimental study on fire resistance behaviors of prefabricated composite thermal insulation walls
作者:
朱筱俊1李向民2杨建3梁书亭3魏少林3许清风2
1东南大学建筑设计研究院有限公司, 南京 210096; 2上海市建筑科学研究院上海市工程结构安全重点实验室, 上海 200032; 3东南大学土木工程学院, 南京 210096
Author(s):
Zhu Xiaojun1 Li Xiangmin2 Yang Jian3 Liang Shuting3 Wei Shaolin3 Xu Qingfeng2
1Architects & Engineers Co., Ltd, Southeast University, Nanjing 210096, China
2Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences, Shanghai 200032, China
3School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
预制 保温墙体 抗火试验 挠度 温度场
Keywords:
prefabricated insulation wall fire text lateral deformation temperature field
分类号:
TU317;TU375
DOI:
10.3969/j.issn.1001-0505.2017.06.020
摘要:
为了研究由内、外叶钢筋混凝土墙板、不同保温材料板及钢套筒连接件组成的预制复合保温墙体的抗火性能,对4个预制复合保温墙体试件进行了单面受火试验.根据测得的墙体截面温度场分布,分析了不同保温材料及保温层厚度的保温隔热性能,观察了试件的破坏过程,对比了各试件面外挠度随时间变化的关系,并对混凝土墙板进行了钻孔取芯分析.试验结果表明:最大挠度值随受火时间的增加而显著增大,墙体施加轴压比0.2的轴向荷载,其墙面外挠度值有减小趋势,EPS板厚度相差20 mm对挠度几乎没有影响,采用XPS板的挠度值较EPS板的小;沿截面厚度方向温度场呈非线性分布,背火面温度普遍较低,均不超过100 ℃;钻孔取芯发现迎火面芯块呈褐红色,XPS板及EPS板灾后呈熔化状态.
Abstract:
To investigate the fire resistance behaviors of the prefabricated composite thermal insulation wall which is composed of inner and outer concrete wythes, different types of insulation boards and steel sleeve connectors. Four prefabricated composite thermal insulation walls subjected to the fire exposure on one side were tested. The thermal insulation properties of different insulation materials and insulation layer thicknesses were analyzed and compared based on the measured characteristics of the temperature field distributions of the walls. Besides, the failure process of the specimens was observed, and the relationship between the out-of-plane displacement and time was compared. The damages of different thermal insulation materials were analyzed by the drilling-core tests. The experimental results show that the maximum lateral deformation of the walls increases with the fire exposure time; when the axial compression ratio is 0.2, the deflection decreases; the lateral deformations of the two walls with different thicknesses of EPS(expandable polystyrene)boards(40 or 60 mm)are almost the same. Compared with the EPS board, the lateral deformations of walls using the XPS(extruded polystyrene)board are smaller. The distribution of the temperature field along the thickness is nonlinear, and the temperature of the unexposed side is less than 100 ℃, much lower than that of the exposed side. The drilling-core test shows that the core from the exposed side is reddish brown, and both the EPS board and XPS board are in the melt state.

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备注/Memo

备注/Memo:
收稿日期: 2017-03-22.
作者简介: 朱筱俊(1972—),男,博士,研究员级高工,496380566@qq.com.
基金项目: 国家重点研发计划资助项目(2016YFC0701703)、上海市科委课题资助项目(15DZ1203506,16DZ1201805)、中央高校基本科研业务费专项资金和江苏省普通高校研究生科研创新计划资助项目(KYLX16_0257)、江苏省高校自然科学基金面上项目(2016TM045J).
引用本文: 朱筱俊,李向民,杨建,等.预制复合保温墙体抗火性能试验研究[J].东南大学学报(自然科学版),2017,47(6):1208-1215. DOI:10.3969/j.issn.1001-0505.2017.06.020.
更新日期/Last Update: 2017-11-20