[1]朱三凡,董毓利,段进涛,等.火灾下两种不同边界钢筋混凝土双向板的振动性能分析[J].华侨大学学报(自然科学版),2021,42(3):289-297.[doi:10.11830/ISSN.1000-5013.202012040]
　ZHU Sanfan,DONG Yuli,DUAN Jintao,et al.Vibration Performance Analysis of Reinforced Concrete Two-Way Slab With Two Different Boundaries Under Fire[J].Journal of Huaqiao University(Natural Science),2021,42(3):289-297.[doi:10.11830/ISSN.1000-5013.202012040]
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火灾下两种不同边界钢筋混凝土双向板的振动性能分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第42卷
期数:
2021年第3期
页码:
289-297
栏目:
出版日期:
2021-05-20

文章信息/Info

Title:
Vibration Performance Analysis of Reinforced Concrete Two-Way Slab With Two Different Boundaries Under Fire
文章编号:
1000-5013(2021)03-0289-09
作者:
朱三凡1; 2;  董毓利1;  段进涛1;  叶森贵1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 健研检测集团有限公司, 福建 厦门 361004
Author(s):
ZHU Sanfan1; 2;  DONG Yuli1;  DUAN Jintao1;  YE Sengui1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. JianYan Test Group Coporation Limited, Xiamen 361004, China
关键词:
钢筋混凝土双向板;  足尺试验;  振动性能;  火灾试验
Keywords:
reinforced concrete two-way slab;  full-scale test;  vibration performance;  fire test
分类号:
TU398.9;TU352.5
DOI:
10.11830/ISSN.1000-5013.202012040
文献标志码:
A
摘要:
开展火灾下三边简支一边固支、两短边固支两长边简支两种边界条件下的足尺混凝土板的火灾试验.首先,在双向板表面布置拾振器,对火灾下两种双向板的振动性能进行研究;然后,通过回归分析,提出火灾下双向板的竖向一阶自激励频率与板中竖向位移的关系式,并基于频率差值进行楼板耐火极限预警;最后,采用ABAQUS软件对三边简支一边固支双向板受火过程中的频率差值进行模拟.结果表明:两种边界条件的双向板在火灾作用下的竖向一阶自激励频率均明显降低;频率差值-板中竖向位移的计算值曲线与实测值曲线基本一致.
Abstract:
The fire tests of full-scale concrete slabs with simple support on three sides-fixed support on one side and fixed support on two short sides-simple support on two long sides were carried out. Firstly, the vibration performance of two kinds of two-way slabs under fire was studied by placing vibration pick-up on the surface of two-way slab. Then, through regression analysis, the relation formula between the vertical first-order self-exciting frequency and the vertical displacement in slab under fire was proposed, and the fire resistance limit of floor was predicted based on the frequency difference. Finally, ABAQUS software was used to simulate the frequency difference in the fire process of two-way slab with simple support on three sides-fixed support on one side. The results show that the vertical first-order self-exciting frequencies of two-way slab with two kinds of boundaries reduce obviously under the action of fire; the calculation value curves of frequency difference and the vertical displacement in slab are basically consistent with the measured value curves.

参考文献/References:

[1] MOTE J C D.Theory of thermal natural frequency variations in disks[J].International Journal of Mechanical Sciences,1966,8(8):547-557.DOI:10.1016/0020-7403(66)90004-X.
[2] 索亮.足尺混凝土双向固支板的火灾行为及振动特性分析[D].青岛:青岛理工大学,2008.
[3] 朱崇绩.足尺钢筋混凝土双向板抗火性能研究[D].哈尔滨:哈尔滨工业大学,2012.DOI:10.7666/d.D238819.
[4] 王为,李兵,董毓利.火荷载作用下足尺混凝土连续板振动特性的实验研究[J].科学技术与工程,2013,13(14):4094-4098.DOI:1671-1815(2013)14-4094-05.
[5] 史春辉,胡海涛,高立堂.高温下钢筋混凝土简支板动力特性分析[J].工程建设,2014,46(1):1-4,9.DOI:10.13402/j.gcjs.2014.01.001.
[6] 王剑.基于自振特性的板火灾损伤研究及安全性能分析[D].青岛:青岛理工大学,2015.DOI:10.7666/d.Y2818823.
[7] 刘才玮,苗吉军,高天予,等.基于动力测试的简支梁火灾下振动分析与试验研究[J].工程科学与技术,2018,50(6):31-38.DOI:10.15961/j.jsuese.201800584.
[8] 中国工程建设标准化协会.混凝土结构试验方法标准: GB/T 50152-2012 [S].北京:中国建筑工业出版社,2012.
[9] 叶森贵.三边简支一边固支混凝土双向板火灾性能研究[D].厦门:华侨大学,2019.
[10] 曾涛,邓云开,胡程,等.地基差分干涉雷达发展现状及应用实例[J].雷达学报,2019,8(1):154-170.DOI:10.12000/JR18115.
[11] 刘明亮,丁克良,宋子超,等.基于地基干涉雷达的超高层动态变形监测[J].北京测绘,2019,33(7):829-834.DOI:10.19580/j.cnki.1007-3000.2019.07.020.
[12] 董传智,叶肖伟,刘坦.非接触式结构动力特性识别方法及试验验证[J].振动与冲击,2017,36(1):188-193.DOI:10.13465/j.cnki.jvs.2017.01.028.
[13] 徐秀秀.基于机器视觉的柔性结构振动测量和分析[D].南京:南京理工大学,2014.DOI:10.7666/d.Y2522032.
[14] HUANG Zhaohui,BURGESS I W,PLANK J R.Effective stiffness modelling of composite concrete slabs in fire[J].Engineering Strucures,2000,22(9):1133-1144.DOI:10.1016/S0141-0296(99)00062-0.
[15] BAILEY C G,TOH W S.Small-scale concrete slab tests at ambient and elevated temperature[J].Engineering Strucures,2000,22(9):1133-1144.DOI:10.1016/j.engstruct.2007.01.023.
[16] 何政,欧进萍.钢筋混凝土结构非线性分析[M].哈尔滨:哈尔滨工业大学出版社,2007.
[17] 王勇,董毓利,邹超英.钢筋混凝土板的极限承载力对比分析[J].哈尔滨工业大学学报,2013,45(8):1-7.DOI:0367-6234(2013)08-0001-07.
[18] 王勇,董毓利,邹超英.钢筋混凝土板的极限承载力计算[J].哈尔滨工业大学学报,2013,45(2):8-13.DOI:0367-6234(2013)02-0008-06.
[19] 朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,2009.

备注/Memo

备注/Memo:
收稿日期: 2020-12-09
通信作者: 董毓利(1965-),男,教授,博士,博士生导师,主要从事混凝土结构抗火性能的研究.E-mail:dongyl@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51778250, 51978293)
更新日期/Last Update: 2021-05-20