|本期目录/Table of Contents|

[1]丁发兴,余志武.恒高温后圆钢管混凝土轴压短柱弹塑性分析[J].建筑科学与工程学报,2006,23(01):34-38.
 DING Fa-xing,YU Zhi-wu.Elasto-Plastic Analysis of Concrete-Filled Circular Steel Tube Stub Columns After Constant High Temperature[J].Journal of Architecture and Civil Engineering,2006,23(01):34-38.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
23卷
期数:
2006年01期
页码:
34-38
栏目:
出版日期:
2006-03-20

文章信息/Info

Title:
Elasto-Plastic Analysis of Concrete-Filled Circular Steel Tube Stub Columns After Constant High Temperature
作者:
丁发兴;余志武;
中南大学 土木建筑学院,湖南 长沙 410075
Author(s):
DING Fa-xing, YU Zhi-wu
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
关键词:
钢管混凝土 应力-应变关系 弹塑性分析 恒高温
Keywords:
concrete-filled steel tube stress-strain relationship elasto-plastic analysis constant high temperature
分类号:
TU528.59
DOI:
-
文献标志码:
A
摘要:
在已有恒高温后混凝土单轴受压和钢材单轴拉伸力学性能研究的基础上,建立了恒高温后混凝土轴对称三轴受压应力-应变关系和复杂受力下的钢材多轴应力-应变关系。应用连续介质力学,建立了恒高温后钢管混凝土同时受压的同心圆柱体计算模型,采用弹塑性全过程分析理论,建立了恒高温后钢管混凝土轴压组合弹性模量理论计算公式和组合应力-应变关系全曲线的理论表达式,并编制相应的计算程序对恒高温后钢管混凝土轴压短柱受力性能进行弹塑性全过程分析,计算结果与试验结果吻合较好。
Abstract:
Based on the research of the mechanical properties of concrete at uniaxial compression and steel at uniaxial tension after constant high temperature, the axisymmetric triaxial compressive stress-strain relationships of concrete and multiaxial stress-strain relationships of steel after constant high temperatures were suggested. Based on continuum mechanics, the mechanical model of concentric cylinders of circular steel tube with concrete core of entire section loaded after constant high temperature was determined. Applying elasto-plastic analysis method, theoretical calculation formulas for composite elastic modulus and composite stress-strain relationships of concrete-filled circular steel tube(CFST)stub columns were proposed and a FORTRAN program was developed, and the load-axial strain relationships of CFST stub columns after constant high temperatures were analyzed. The analysis results are in reasonable agreement with the experiment ones.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2005-12-13
基金项目:国家自然科学基金项目(50578162); 湖南省自然科学基金项目(03JJY3089)
作者简介:丁发兴(1979-),男,浙江瑞安人,工学博士研究生,E-mail:dinfaxin@mail.csu.edu.cn。
更新日期/Last Update: 2006-03-20