[1]莫时旭,邹泽群,郑艳.部分充填砼钢箱连续组合梁抗裂性能分析[J].华侨大学学报(自然科学版),2022,43(3):314-322.[doi:10.11830/ISSN.1000-5013.202011002]
　MO Shixu,ZOU Zequn,ZHENG Yan.Analysis of Crack Resistance of Partially Filled Concrete Steel Box Continuous Composite Beams[J].Journal of Huaqiao University(Natural Science),2022,43(3):314-322.[doi:10.11830/ISSN.1000-5013.202011002]
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部分充填砼钢箱连续组合梁抗裂性能分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第43卷
期数:
2022年第3期
页码:
314-322
栏目:
出版日期:
2022-05-10

文章信息/Info

Title:
Analysis of Crack Resistance of Partially Filled Concrete Steel Box Continuous Composite Beams
文章编号:
1000-5013(2022)03-0314-09
作者:
莫时旭1; 2;  邹泽群1; 2;  郑艳1; 2
1. 桂林理工大学 土木与建筑工程学院, 广西 桂林 541004;2. 桂林理工大学 广西岩土力学与工程重点实验室, 广西 桂林 541004
Author(s):
MO Shixu1; 2;  ZOU Zequn1; 2;  ZHENG Yan1; 2
1. College of Civil and Architectural Engineering, Guilin University of Technology, Guilin 541004, China; 2. Guangxi Key Laboratory of Rock-Soil Mechanic and Engineering, Guilin University of Technology, Guilin 541004, China
关键词:
钢-混组合梁;  超高性能混凝土;  有限元模拟;  负弯矩区;  高应变强化
Keywords:
steel-concrete composite beam;  ultra-high performance concrete;  finite element simulation;  negative bending moment zone;  high strain strengthened
分类号:
TU398.9
DOI:
10.11830/ISSN.1000-5013.202011002
文献标志码:
A
摘要:
针对部分充填砼钢箱连续组合梁裂缝控制问题,开展超高性能混凝土(UHPC)翼板-部分充填砼钢箱连续组合梁抗裂性能研究,探讨该组合梁裂缝控制的新途径.通过3根部分充填砼钢箱连续组合梁试验,得到挠度、滑移和裂缝的开展特征.基于ABAQUS软件建立部分充填砼钢箱连续组合梁有限元分析模型,分析UHPC翼板部分充填砼钢箱连续组合梁关键参数对受力性能的影响.结果表明:负弯矩区采用UHPC翼板能显著提高组合梁抗裂性能;当负弯矩区UHPC翼板长为0.3倍跨径、厚度为1/3翼板总厚时,能满足裂缝控制要求且经济合理;与普通混凝土相比,高应变强化UHPC初裂荷载提升2.3倍,可视开裂荷载提升7.6倍.
Abstract:
Aiming at the crack control problem of partially filled concrete steel box continuous composite beams, the research on the crack resistance of ultra-high performance concrete(UHPC)flange-partially filled concrete steel box continuous composite beams is carried out, and a new way of this composite beam crack control is discussed. Through the test of three partially filled concrete steel box continuous composite beams, the deflection, slippage and crack characteristics are obtained. Based on ABAQUS software, a finite element analysis model of partially filled concrete steel box continuous composite beam is established. The influence of key parameters of the UHPC flange-partially filled concrete steel box continuous composite beam on the mechanical performance is analyzed. The results show that the use of UHPC flange in the negative bending moment zone can significantly improve the crack resistance of the composite beam; when the length of UHPC flange in the negative bending moment zone is 0.3 the span and the thickness is 1/3 of the total thickness of the flange, the requirements of crack control is satisfied, and it is economical and reasonable; by comparison with normal concrete, high strain strengthened UHPC initial cracked load increases by 2.3 times, and the crack-observed load increases by 7.6 times.

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备注/Memo

备注/Memo:
收稿日期: 2020-11-01
通信作者: 郑艳(1973-),女,副教授,主要从事钢混组合结构的研究.E-mail:253651988@qq.com.
基金项目: 国家自然科学基金资助项目(52068012); 广西自然科学基金资助项目(2020GXNSFAA159003)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2022-05-20