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[1]谈滢涛,王贤坤,司奇楠,等.GFRP复合材料-泡桐木夹芯楼面板抗火性能试验[J].南京工业大学学报(自然科学版),2020,42(01):124-128.[doi:10.3969/j.issn.1671-7627.2020.01.018]
 TAN Yingtao,WANG Xiankun,SI Qinan,et al.Experiments on fire resistance of sandwich panels with GFRP skins and a paulownia wood-web core[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(01):124-128.[doi:10.3969/j.issn.1671-7627.2020.01.018]
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GFRP复合材料-泡桐木夹芯楼面板抗火性能试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年01期
页码:
124-128
栏目:
出版日期:
2020-01-13

文章信息/Info

Title:
Experiments on fire resistance of sandwich panels with GFRP skins and a paulownia wood-web core
文章编号:
1671-7627(2020)01-0124-05
作者:
谈滢涛1王贤坤2司奇楠2王璐2
1.北京世纪千府国际工程设计有限公司,北京 100089; 2.南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
TAN Yingtao1 WANG Xiankun2 SI Qinan2 WANG Lu2
1.Century Chief International Architecture Design Co. Ltd., Beijing 100089, China; 2.College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
夹芯结构 复合材料 受火性能 残余承载力
Keywords:
sandwich construction composite material fire performance residual ultimate strength
分类号:
TU312
DOI:
10.3969/j.issn.1671-7627.2020.01.018
文献标志码:
A
摘要:
为了研究玻璃纤维增强塑料(GFRP)-泡桐木夹芯构件在受火时以及受火后的力学性能,对4个夹芯构件进行试验,其中1个构件用于静力试验,其余3个构件进行受火-荷载耦合试验以及过火后的力学性能试验。对构件在受火时的温度分布、强度以及刚度的变化进行记录以及分析。试验结果表明:由于腹板的加入,构件在静力下的性能有着明显提高,极限抗弯强度为491.9 kN; 构件在受火时树脂分解、水分蒸发、木材炭化,强度以及刚度出现大幅下降; 构件温度分布出现了三段式分布,即加速升温、恒温以及线性升温3个阶段,构件在整个试验过程中背火面处的温度一直处于安全范围; 在受火后的性能上,所有构件均出现了力学性能大幅下滑现象,其中极限强度下降最高约86%; 腹板厚度增加对构件的过火性能有所提高,厚度的增加对构件的过火性能影响有着较大的影响。
Abstract:
To study the mechanical properties of glass fiber reinforced plastics(GFRP)-paulownia wood sandwich components during fire and after fire, tests for four specimens were carried out with one of the specimen for static test and the remains for fire-load coupling tests and mechanical property tests after the fire. The changes were recorded in temperature distribution, strength and stiffness during fire. The experimental results showed that the performance of the specimen under static load was obviously improved due to the addition of webs with the value of 491.9 kN. Resin decomposition, moisture evaporation and carbonization of wood happened when specimens subjected fire, and its strength and stiffness dropped significantly. The temperature distribution displayed a three-stage of accelerated heating, constant temperature and linear heating. The temperature of the upper surface of the specimen was always within safe limits throughout the test. The performance of the specimens after fire showed a substantial decline in the mechanical properties, in which the ultimate strength dropped up to approximately 86%. The increase in the thickness of the specimen could improve the after-fire performance, and the increase in the thickness of the specimen had a greater impact on the after-fire performance.

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备注/Memo

备注/Memo:
收稿日期:2019-06-24
基金项目:国家自然科学基金(51678297)
作者简介:谈滢涛(1980—)男,高级工程师,E-mail:9699514@qq.com; 王璐(联系人),教授,E-mail:kevinlwang@njtech.edu.cn.
引用格式:谈滢涛,王贤坤,司奇楠,等.GFRP复合材料-泡桐木夹芯楼面板抗火性能试验[J].南京工业大学学报(自然科学版),2020,42(1):124-128.
TAN Yingtao, WANG Xiankun, SI Qinan, et al. Experiments on fire resistance of sandwich panels with GFRP skins and a paulownia wood-web core[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(1):124-128..
更新日期/Last Update: 2020-01-30