超高性能混凝土翼板-窄幅钢箱组合梁双重组合作用试验与有限元分析

引用文献:

杨汉杰 ,莫时旭, 郑艳. 超高性能混凝土翼板-窄幅钢箱组合梁双重组合作用试验与有限元分析[J]. 建筑结构,2022,48(13):69-76.

YANG Hanjie MO Shixu ZHENG Yan. Test and finite element analysis of ultra-high performance concrete flange-narrow width steel box composite beam’s double combination effect under negative bending[J]. Building Structure,2022,48(13):69-76.

作者:杨汉杰 ,莫时旭, 郑艳
单位:桂林理工大学土木与建筑工程学院 ,中国市政工程西北设计研究院有限公司, 广西岩土力学与工程重点实验室
摘要:对于部分填充混凝土式窄幅钢箱连续组合梁裂缝控制问题,对3根混凝土翼板-部分充填混凝土式窄幅钢箱连续组合梁进行了静力加载试验。试验结果表明:组合梁负弯矩区承载性能得到明显改善,但翼板裂缝控制效果不明显。基于超高性能混凝土(UHPC)良好的裂缝控制能力提出将部分充填混凝土式窄幅钢箱连续组合梁翼板替换为UHPC翼板,形成UHPC翼板-部分充填混凝土式窄幅钢箱连续组合梁。采用ABAQUS有限元软件建立了5种组合梁的精细化模型,分析了组合梁全过程受力性能。结果表明,UHPC翼板-部分充填混凝土式窄幅钢箱组合梁的开裂弯矩与截面承载能力显著提高,各组合梁翼板与钢梁交界面间的滑移差距不大。考虑到经济因素,为提升组合梁负弯矩区截面的开裂弯矩,应适当增加UHPC的板长,减小板厚。
关键词:钢-混凝土组合梁;双重组合作用;超高性能混凝土;负弯矩区
作者简介:杨汉杰,硕士,助理工程师,主要从事桥梁设计工作,Email:296714614@qq.com。郑艳,硕士,教授,硕士生导师,主要擅长钢-混凝土组合梁的研究,Email:253651988@qq.com。
基金:国家自然科学基金资助项目(52068012);广西自然科学基金项目(2020GXNSFAA159003);中国市政工程西北设计研究院有限公司科技计划(XBSZKY2208)。
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参考文献[1] SU Q T,YANG G T,BRADFORD M A.Behavior of a continuous composite box girder with a prefabricated prestressed-concrete slab in its hogging-moment region[J].Journal of Bridge Engineering,2015,20(8):B4014004.
[2] 黄祥,刘天舒,丁庆军.超高性能混凝土研究综述[J].混凝土,2019(9):36-38.
[3] 陈宝春,林毅焌,杨简,等.超高性能纤维增强混凝土中纤维作用综述[J].福州大学学报(自然科学版),2020,48(1):58-68.
[4] 阳琴.超高性能混凝土在城市人行天桥中的应用[J].福建建材,2020(11):71-73.
[5] BRÜHWILER E,DENARIÉ E.Rehabilitation and strengthening of concrete structures using ultra-high performance fibre reinforced concrete[J].Structural Engineering International,2013,23(4):450-457.
[6] 徐明雪,梁兴文,于婧,等.UHPC梁短期刚度理论与试验研究[J].工程力学,2019,36(1):146-154,164.
[7] 刘超,陈麒阳,袁伟杰,等.超高性能混凝土组合箱梁弯曲性能有限元分析[J].同济大学学报(自然科学版),2018,46(4):430-435,443.
[8] 樊健生,施正捷,芶双科,等.钢-ECC组合梁负弯矩区受弯性能试验研究[J].土木工程学报,2017,50(4):64-72.
[9] 莫时旭,赵剑光,胥海宁.部分充填式钢箱-混凝土组合梁的负弯矩区裂缝宽度[J].华侨大学学报(自然科学版),2016,37(3):352-357.
[10] 莫时旭,周梓滔,李君谊.不同参数条件对充填式窄幅钢箱-混凝土组合连续梁裂缝的影响[J].建筑结构,2020,50(2):101-106,75.
[11] 羊海林,郑艳,莫时旭.负弯矩区部分充填混凝土对窄幅钢箱-混凝土组合梁受力性能影响试验研究[J].建筑结构学报,2019,40(11):131-139.
[12] 混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2011.
[13] 钢结构设计标准:GB 50017—2017[S].北京:中国建筑工业出版社,2018.
[14] 梁兴文,胡翱翔,于婧,等.钢纤维对超高性能混凝土抗弯力学性能的影响[J].复合材料学报,2018,35(3):722-731.
[15] 张哲,邵旭东,李文光,等.超高性能混凝土轴拉性能试验[J].中国公路学报,2015,28(8):50-58.
[16] 杨剑,方志.超高性能混凝土单轴受压应力-应变关系研究[J].混凝土,2008(7):11-15.
Test and finite element analysis of ultra-high performance concrete flange-narrow width steel box composite beam’s double combination effect under negative bending
YANG Hanjie MO Shixu ZHENG Yan
(College of Civil Engineering, Guilin University of Technology CSCEC AECOM CONSULTANTS Co.,Ltd. Guangxi Key Laboratory of Rock-soil Mechanic and Engineering)
Abstract: About the crack control problem of partially concrete-filled narrow width steel box continuous beams, three normal concrete(NC) flange-partially concrete-filled narrow width steel box continuous composite beams were test under static loading. The test shows that the load-bearing performance of the composite beams under negative bending is obviously improved but the effect of controlling cracks of flange is not obvious. It is proposed to use ultra-high performance concrete(UHPC) replace partially-filled steel box-concrete continuous composite beam's plate under negative bending to became UHPC flange-narrow width steel box composite beam which based on UHPC excellent cracks control ability. 5 composite beam refined models were tested which used by ABAQUS finite element analysis software, the load-bearing preformance of the composite beams in the whole process was analyzed. According to results, UHPC flange-partially concrete-filled narrow width steel box continuous composite beams improve cracking moment and bearing capacity, and there is little difference on interface sliding between models. Due to economic factors, in order to increase the cracking moment value of composite beams under negative bending, the flange length of UHPC should be appropriately increased and the flange thickness should be reduced.
Keywords: steel-concrete composite beam; double combination effect; ultra-high performance concrete(UHPC); negative bending
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