[1]郭浩,叶勇,高毅超,等.双金属复合管混凝土轴拉性能有限元分析[J].华侨大学学报(自然科学版),2019,40(1):41-47.[doi:10.11830/ISSN.1000-5013.201805019]
　GUO Hao,YE Yong,GAO Yichao,et al.Finite Element Analysis of Concrete-Filled Bimetallic Tubes Subjected to Axial Tension[J].Journal of Huaqiao University(Natural Science),2019,40(1):41-47.[doi:10.11830/ISSN.1000-5013.201805019]
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双金属复合管混凝土轴拉性能有限元分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第40卷
期数:
2019年第1期
页码:
41-47
栏目:
出版日期:
2019-01-20

文章信息/Info

Title:
Finite Element Analysis of Concrete-Filled Bimetallic Tubes Subjected to Axial Tension
文章编号:
1000-5013(2019)01-0041-07
作者:
郭浩1;  叶勇1; 2;  高毅超1; 2;  张世江1
1. 华侨大学 土木工程学院, 福建 厦门 361021;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):
GUO Hao1;  YE Yong1; 2;  GAO Yichao1; 2;  ZHANG Shijiang1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China
关键词:
双金属复合管混凝土;  轴拉性能;  有限元分析;  受力机理;  组合作用
Keywords:
concrete-filled bimetallic tube;  axial tensile behavior;  finite element analysis;  mechanical mechanism;  composite action
分类号:
TU398.9;TU311.41
DOI:
10.11830/ISSN.1000-5013.201805019
文献标志码:
A
摘要:
选择合理的材料本构模型、单元类型、网格划分技术和边界条件,建立双金属复合管混凝土构件在轴拉荷载作用下的有限元分析模型,并利用双金属复合管混凝土(CFBT)轴压试验和钢管混凝土(CFST)轴拉试验的结果对模型的可靠性进行验证.基于验证后的有限元模型,对CFBT轴拉构件的受力机理和破坏形态进行研究,分析不同参数对构件轴拉承载力的影响规律.研究结果表明:核心混凝土可有效限制双金属复合管在拉伸过程中的内缩变形,使钢管处于复合受力状态;CFBT构件的轴拉承载力比双金属复合管提高15%左右;随着不锈钢厚度的增大,构件的轴拉承载力逐渐提高;核心混凝土的强度对构件承载力的影响不明显.
Abstract:
Based on proper material constitutive models, element types, meshing technology, and boundary conditions, a finite element(FE)model was established for the concrete-filled bimetallic tubes(CFBT)subjected to axial tension. The FE model was verified against experimental results of CFBT under axial compression and concrete-filled steel tubes(CFST)under axial tension. The mechanical performance and failure modes of CFBT tensile member were investigated by this FE model, and the influence of different parameters on the tensile strength of members is analyzed. Numerical results show: the concrete core could effectively confine the lateral shrinkage of the bimetallic tube during tension, CFBT is in three-directional stress state. The filled concrete increases the axial tensile strength of bimetallic tubes by approximately 15%. As the thickness of the stainless steel tube layer increases, the tensile strength increases accordingly. The concrete strength influences slightly on the tensile behavior of CFBT members.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2018-05-09
通信作者: 叶勇(1985-),男,讲师,博士,主要从事钢-混凝土组合结构的研究.E-mail:qzyeyong@126.com.
基金项目: 福建省自然科学基金资助项目(2015J01208); 福建省高校青年自然基金重点资助项目(JZ160410); 华侨大学研究生科研创新能力培育计划资助项目(1611304008)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2019-01-20