[1]林碧兰,李丹,徐玉野.三面受火后混凝土短柱受剪承载力的数值计算[J].华侨大学学报(自然科学版),2014,35(4):437-442.[doi:10.11830/ISSN.1000-5013.2014.04.0437]
　LIN Bi-lan,LI Dan,XU Yu-ye.Numerical Calculation for the Shear Strength of Concrete Short Columns after 3-Face Heating[J].Journal of Huaqiao University(Natural Science),2014,35(4):437-442.[doi:10.11830/ISSN.1000-5013.2014.04.0437]
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三面受火后混凝土短柱受剪承载力的数值计算()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第35卷
期数:
2014年第4期
页码:
437-442
栏目:
出版日期:
2014-07-10

文章信息/Info

Title:
Numerical Calculation for the Shear Strength of Concrete Short Columns after 3-Face Heating
文章编号:
1000-5013(2014)04-0437-06
作者:
林碧兰1;  李丹2;  徐玉野2
1. 厦门理工学院 材料科学与工程学院, 福建 厦门 361024;2. 华侨大学 福建省结构工程与防灾重点实验室, 福建 厦门 361021
Author(s):
LIN Bi-lan1;  LI Dan2;  XU Yu-ye2
1. College of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China
关键词:
钢筋混凝土;  短柱;  火灾;  受剪承载力;  数值模型
Keywords:
reinforced concrete;  short column;  fire;  shear strength;  numerical model
分类号:
TU375.3
DOI:
10.11830/ISSN.1000-5013.2014.04.0437
文献标志码:
A
摘要:
基于有限元软件ABAQUS建立火灾后混凝土短柱推覆过程的数值分析模型,并对火灾后7根混凝土短柱的试验结果进行模拟分析,建议模型分析参数.分析水平力方向、受火时间、轴压比、剪跨比、截面尺寸、箍筋间距对三面受火后混凝土短柱受剪承载力的影响规律.基于自编的有限元程序计算三面受火后混凝土截面抗压强度的平均折减系数,提出三面受火后混凝土柱受剪承载力的实用计算方法.研究结果表明:数值模型对火灾后混凝土短柱受剪承载力的预测较准.
Abstract:
A numerical model for the push-over analysis of concrete short columns after fire was developed by ABAQUS, and some key finite element model parameters for the short columns were suggested through the numerical analysis of the tests of seven columns. The effects of horizontal force direction, fire exposure time, axial compressive ratio, shear span ratio, sectional dimension and stirrup spacing on the shear strength of concrete short columns after 3-face heating were investigated based on the numerical model. The average reduction coefficient of compressive strength in concrete sections after 3-face heating was calculated by a self-developed finite element program, and a practical calculation method for the shear strength of concrete columns after 3-face heating was proposed. The results indicate that: the shear strength of concrete short column after fire is well predicted by the established model.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-01-20
通信作者: 徐玉野(1978-),男,副教授,主要从事混凝土结构抗灾的研究.E-mail:yuyexu@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(50908091); 福建省自然科学基金资助项目(2012J05099, 2012J01221); 福建省高等学校新世纪优秀人才支持计划资助项目(11FJRC03)
更新日期/Last Update: 2014-07-20