[1]陈香蓉,霍静思,王卫华,等.钢筋混凝土锈蚀开裂的有限元分析方法[J].华侨大学学报(自然科学版),2022,43(1):36-43.[doi:10.11830/ISSN.1000-5013.202102017]
　CHEN Xiangrong,HUO Jingsi,WANG Weihua,et al.Finite Element Analysis for Corrosion and Cracking in Reinforced Concrete[J].Journal of Huaqiao University(Natural Science),2022,43(1):36-43.[doi:10.11830/ISSN.1000-5013.202102017]
点击复制

钢筋混凝土锈蚀开裂的有限元分析方法()
分享到：

《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1期
页码:
36-43
栏目:
出版日期:
2022-01-09

文章信息/Info

Title:
Finite Element Analysis for Corrosion and Cracking in Reinforced Concrete
文章编号:
1000-5013(2022)01-0036-08
作者:
陈香蓉;  霍静思;  王卫华;  罗漪
华侨大学 土木工程学院, 福建 厦门 361021
Author(s):
CHEN Xiangrong;  HUO Jingsi;  WANG Weihua;  LUO Yi
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
关键词:
钢筋混凝土;  锈胀开裂;  耐久性;  混凝土损伤模型;  Cohesive单元
Keywords:
reinforced concrete;  corrosion expansion and cracking;  durability;  concrete damage model;  Cohesive element
分类号:
TU357.01;TU317.1
DOI:
10.11830/ISSN.1000-5013.202102017
文献标志码:
A
摘要:
基于Abaqus非线性有限元软件,通过投放不同形状、粒径、级配的骨料,模拟钢筋锈蚀膨胀导致混凝土保护层开裂的精细化建模分析. 针对混凝土裂缝开展形态,对网格映射方法、几何剖分方法,以及几何剖分方法+Cohesive单元细观模型等几种建模技术的运算效率进行对比;同时针对两种不同混凝土骨料形状对锈胀混凝土裂缝开裂的影响进行比较分析.结果表明:网格映射方建模简单、运算效率较高,但分析结果较粗糙;几何剖分方法收敛速度快,计算效率高,但建模时需要对骨料进行剖分;几何剖分+Cohesive单元方法得到的裂缝开展形态更加精细化更接近实际情况,但运算效率低,只适用于局部精细化分析要求较高的场合.骨料的形状和分布对裂缝分布和扩展趋势均产生一定影响,实际分析中,骨料形状应尽可能接近于实际骨料.此外,通过几何剖分+Cohesive单元法建立的模型计算结果锈蚀开裂时间与理论计算值对比误差小于10%,说明该模拟方法在一定程度上符合钢材锈胀挤压附近混凝土导致开裂的理论.
Abstract:
Based on the Abaqus nonlinear finite element software, the fine model is construsted to analyze the cracking of the concrete protective layer caused by the corrosion and expansion of steel bars with aggregates of different shapes, particle sizes, and gradations. Several modeling techniques such as grid mapping method, geometric subdivision method, and adding Cohesive elements are introduced. The development pattern of concrete cracks and calculation efficiency are compared; the cracks of corroded concrete are discussed according to two concrete aggregate shapes. The result shows: the mesh mapping method is simple and has high calculation efficiency, but the analysis results are not good; the geometric mesh method has fast convergence speed and high calculation efficiency, but the aggregates need to be partitioned during modeling; the crack development pattern obtained by the geometric division + Cohesive element method is benign and close to the actual situation, but the calculation efficiency is low, and it is only suitable for local fine analysis with high requirements; the shape and distribution of the aggregate affect the distribution of cracks. In the actual analysis,the shape of the aggregate should be as close to the actual aggregate as possible; the error of rust cracking time between the calculation result by the geometric division + Cohesive element method and theoretical calculation value is less than 10%, to a certain extent, this simulation method conforms to the theory of cracking caused by steel expanding and extruding surrounding concrete.

参考文献/References:

[1] LIU Youping,WEYERS R E.Modeling the time-to-corrosion cracking in chloride contaminated reinforced concrete structures[J].Materials Journal,1998,95(6):75-84.DOI:10.1016/S0040-6090(98)01045-1.
[2] 戴靠山,袁迎曙,杨广.人工气候加速锈蚀后钢筋混凝土粘结性能试验研究[J].混凝土,2004(11):45-48.DOI:10.3969/j.issn.1002-3550.2004.11.014.
[3] 干伟忠,金伟良,高明赞.混凝土中钢筋加速锈蚀试验适用性研究[J].建筑结构学报,2011,32(2):41-47.
[4] 李薛忠,吴庆,王刚,等.海水海砂混凝土中钢筋锈蚀的电化学特征[J].混凝土,2020(7):20-24.DOI:10.3969/j.issn.1002-3550.2020.07.005.
[5] 陆春华,王一健,成璞.混凝土内自然锈蚀钢筋力学性能试验及数值模拟[J].江苏科技大学学报(自然科学版),2019,33(6):106-113.DOI:10.11917/j.issn.1673-4807.2019.06.016
[6] 孙马,周建庭,徐略勤,等.基于加速锈蚀试验的RC梁抗弯性能劣化研究[J].重庆交通大学学报(自然科学版),2020,39(8):51-58.DOI:10.3969/j.issn.1674-0696.2020.08.08.
[7] 袁迎曙,李果.锈蚀钢筋混凝土柱的结构性能退化特征[J].建筑结构,2002(10):18-20.
[8] 张伟平,王晓刚,顾祥林,等.加速锈蚀与自然锈蚀钢筋混凝土梁受力性能比较分析[J].东南大学学报(自然科学版),2006,36(增刊2):139-144.
[9] 张伟平,商登峰,顾祥林.锈蚀钢筋力学性能研究现状分析[J].工业建筑,2005,35(增刊1):706-709.DOI:10.3321/j.issn:1000-8993.2005.z1.209.
[10] 汪奔,王弘,张志强,等.三维随机凹凸型混凝土骨料细观建模方法研究[J].应用力学学报,2018,35(5):1072-1076.DOI:10.11776/cjam.35.05.B062.
[11] 黄星浩,张欣,李哲,等.基于富勒及泰波理论的机制砂颗粒级配研究[J].混凝土,2019(4):97-101.DOI:10.3969/j.issn.1002-3550.2019.04.022.
[12] 汪奔,王弘,张志强,等.基于网格生成的随机凹凸型混凝土骨料细观建模方法[J].计算力学学报,2017,34(5):591-596.DOI:10.7511/jslx201705009.
[13] 陆春华,赵羽习,金伟良.锈蚀钢筋混凝土保护层锈胀开裂时间的预测模型[J].建筑结构学报,2010,31(2):85-92.
[14] 杜修力,金浏.钢筋锈胀引发混凝土保护层开裂破坏的细观数值研究[J].计算力学学报,2015,32(6):772-780.DOI:10.7511/jslx201506010.
[15] 中国建筑科学研究院,清华大学,同济大学,等.混凝土结构设计规范: GB 50010-2010[S].北京:中国建筑工业出版社,2010.
[16] DU Xiuli,JIN Liu,MA Guowei.Meso-element equivalent method for the simulation of macro mechanical properties of concrete[J].International Journal of Damage Mechanics,2013,22(5):16-21.DOI:10.1177/1056789512457096.
[17] 周云麟.混凝土骨料比表面积的测定与计算[J].混凝土,1984(2):50-53.
[18] 姜慧,喻孟雄,刘荣桂.混凝土保护层均匀锈胀内裂分析[J].混凝土,2014(9):1-4.DOI:10.3969/j.issn.1002-3550.2014.09.001.

相似文献/References:

[1]郭子雄,吕西林.高轴压比框架柱抗震性能试验研究[J].华侨大学学报(自然科学版),1999,20(3):258.[doi:10.11830/ISSN.1000-5013.1999.03.0258]
　Guo Zixiong,Lu Xilin.Antiseismic Performance Test of RC Framed Column with High Axial Compression Ratio[J].Journal of Huaqiao University(Natural Science),1999,20(1):258.[doi:10.11830/ISSN.1000-5013.1999.03.0258]
[2]苏世灼,戴秋莲.楼板裂缝问题浅析[J].华侨大学学报(自然科学版),2000,21(2):178.[doi:10.3969/j.issn.1000-5013.2000.02.017]
　Su Shizhuo,Dai Qiulian.An Analysis on the Crack of RC Floorslab[J].Journal of Huaqiao University(Natural Science),2000,21(1):178.[doi:10.3969/j.issn.1000-5013.2000.02.017]
[3]徐玉野,王全凤,柴振岭.钢筋混凝土柱火灾试验数值模拟的关键技术[J].华侨大学学报(自然科学版),2008,29(4):588.[doi:10.11830/ISSN.1000-5013.2008.04.0588]
　XU Yu-ye,WANG Quan-feng,CHAI Zhen-ling.Key Technologies of Numerical Simulation of Reinforced Concrete Columns in Fire Test[J].Journal of Huaqiao University(Natural Science),2008,29(1):588.[doi:10.11830/ISSN.1000-5013.2008.04.0588]
[4]何叶,徐玉野,林燕卿,等.钢筋混凝土异形柱抗扭性能的数值模拟[J].华侨大学学报(自然科学版),2012,33(4):429.[doi:10.11830/ISSN.1000-5013.2012.04.0429]
　HE Ye,XU Yu-ye,LIN Yan-qing,et al.Numerical Simulation of the Torsional Behavior for Reinforced Concrete Specially-Shaped Columns[J].Journal of Huaqiao University(Natural Science),2012,33(1):429.[doi:10.11830/ISSN.1000-5013.2012.04.0429]
[5]林燕卿,徐玉野,杨清文,等.火灾后混凝土短柱的滞回性能和损伤评定[J].华侨大学学报(自然科学版),2013,34(5):563.[doi:10.11830/ISSN.1000-5013.2013.05.0563]
　LIN Yan-qing,XU Yu-ye,YANG Qing-wen,et al.Hysteretic Behaviors and Damage Assessment of Concrete Short Columns after Fire[J].Journal of Huaqiao University(Natural Science),2013,34(1):563.[doi:10.11830/ISSN.1000-5013.2013.05.0563]
[6]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),2015,36(预先出版):0.
　LIN Bi-lan,LI Dan,XU Yu-ye.Numerical Calculation for the Shear Strength of Concrete Short Columns after Exposed to 3-Face Heating[J].Journal of Huaqiao University(Natural Science),2015,36(1):0.
[7]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.[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(1):437.[doi:10.11830/ISSN.1000-5013.2014.04.0437]

备注/Memo

备注/Memo:
收稿日期: 2021-02-17
通信作者: 王卫华(1980-),男,副教授,博士,主要从事组合结构与抗火性能的研究.E-mail:whwang@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51208217); 福建省自然科学基金资助项目(2014J01195); 福建省泉州市科技计划资助项目(2017T002); 华侨大学研究生科研创新能力培育计划资助项目(18013086005)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2022-01-20