氯盐环境下钢筋锈蚀损伤混凝土应力应变本构模型
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国家自然科学基金资助项目(51678513,51278444,51778566);江苏高校优势学科建设工程资助项目;浙江省交通运输厅科研计划项目(2018016)


Stress Strain Constitutive Model of Concrete Damaged by Rebar Corrosion in Chloride Environment
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    摘要:

    采用加速腐蚀试验,对氯盐环境下钢筋锈蚀损伤混凝土棱柱体试件的破坏形态、应力应变全曲线、峰值应力、峰值应变、极限应变及弹性模量进行了试验研究.结果表明:钢筋锈蚀损伤混凝土试件的破坏多为微柱失稳破坏,大致平行于受力方向的锈胀裂缝是主要的破裂面;钢筋锈蚀损伤混凝土实测应力应变全曲线与未锈蚀损伤混凝土相似,但是随着钢筋锈蚀率的增加,其应力应变全曲线上升段的斜率逐渐减小,峰值应变增大;钢筋锈蚀率越大的试件,脆性越明显;钢筋锈蚀损伤混凝土试件的峰值应力均低于未锈蚀损伤试件,峰值应变、极限应变随钢筋锈蚀率增加而增大,弹性模量随钢筋锈蚀率增加而减小;建立了钢筋锈蚀损伤混凝土应力应变本构模型,模型计算值与实测值吻合较好.

    Abstract:

    Adopting accelerated corrosion method, the failure mode, stress strain curves, peak stress, peak strain, ultimate strain and elastic modulus of the prismatic concrete specimens damaged by rebar corrosion were studied experimentally. Results show that the failure of corrosion damaged concrete specimens is mainly caused by the instability failure of micro column. The corrosion induced cracks which are roughly parallel to the direction of force are the main fracture surface. The measured stress strain curves of concrete damaged by corrosion are similar to that of uncorroded concrete, however, the slope of stress strain curve decreases gradually and the peak strain increases with the increase of corrosion ratio, the higher the corrosion rate of specimen is, and the more obvious the brittleness is. The peak stress of concrete specimens damaged by corrosion is lower than that of the uncorroded specimens, the peak strain and ultimate strain increases with the increase of corrosion rate, the elastic modulus decreases with the increase of corrosion rate. A stress strain constitutive model of concrete damaged by rebar corrosion is established, the calculated value of the model agrees well with the measured value.

    参考文献
    [1]金伟良,袁迎署,卫军,等.氯盐环境下混凝土结构耐久性理论与设计方法[M].北京:科学出版社,2011:1 17.
    JIN Weiliang,YUAN Yingshu,WEI Jun,et al.Durability theory and design method of concrete structure under chloride environment[M].Beijing:Science Press,2011:1 17.(in Chinese)
    [2]GJCRV O E.Durability design of concrete structures in severe environments[M].Norway:Taylor & Francis,2009:13 43.
    [3]钟小平,金伟良.钢筋混凝土结构基于耐久性的可靠度设计方法[J].土木工程学报,2016,49(5):31 39.
    ZHONG Xiaoping,JIN Weiliang.Reliability design method for reinforced concrete structure based on durability[J].China Civil Engineering Journal,2016,49(5):31 39.(in Chinese)
    [4]WANG Y Z,WU L J,WANG Y C,et al.Effects of coarse aggregates on chloride diffusion coefficients of concrete and interfacial transition zone under experimental drying wetting cycles[J].Construction and Building Materials,2018,185:230 245.
    [5]YE H L,JIN X Y,FU C Q,et al.Chloride penetration in concrete exposed to cyclic drying wetting and carbonation[J].Construction and Building Materials,2016,112:457 463.
    [6]范颖芳,张英姿,胡跃东,等.氯化钠侵蚀混凝土力学性能的试验研究[J].大连海事大学学报,2008,34(1):125 128.
    FAN Yingfang,ZHANG Yingzi,HU Yuedong,et al.Experimental study on property of concrete corroded by NaCl[J].Journal of Dalian Maritime University,2008,34(1):125 128.(in Chinese)
    [7]李永强,巴明芳,柳俊哲,等.干湿循环作用下水泥基复合材料抗氯离子侵蚀性能及其微观结构变化[J].复合材料学报,2017,34(12):2856 2865.
    LI Yongqiang,BA Mingfang,LIU Junzhe,et al.Resistance to chloride erosion of cement matrix composite materials under dry wet cycling and their micro structural changes[J].Acta Materiae Compositae Sinica,2017,34(12):2856 2865.(in Chinese)
    [8]张晓,闫涛.氯离子腐蚀环境下混凝土力学性能研究[J].金陵科技学院学报,2012,28(1):38 41.
    ZHANG Xiao,YAN Tao.Mechanical properties of concrete in chloride corrosion environment[J].Journal of Jinling Institute of Technology,2012,28(1):38 41.(in Chinese)
    [9]李隽,高培伟,刘宏伟,等.混凝土在浸泡和干湿循环作用下的抗氯盐侵蚀性能[J].南京理工大学学报,2017,41(5):666 670.
    LI Jun,GAO Peiwei,LIU Hongwei,et al.Study on concrete resistance to chloride salt corrosion under full soaking and dry wet cycling condition[J].Journal of Nanjing University of Science and Technology,2017,41(5):666 670.(in Chinese)
    [10]聂良学,许金余,刘志群,等.盐腐蚀后混凝土的动态本构模型[J].爆炸与冲击,2017,37(4):712 718.
    NIE Liangxue,XU Jinyu,LIU Zhiqun,et al.Dynamic constitutive model of concrete after salt corrosion[J].Explosion and Shock Waves,2017,37(4):712 718.(in Chinese)
    [11]邢小光,陈震,许金余,等.混凝土受氯盐腐蚀后动力学特性损伤研究[J].硅酸盐通报,2017,36(2):589 594.
    XING Xiaoguang,CHEN Zhen,XU Jinyu,et al.Damage and deterioration research on dynamic properties of concrete after chloride corrosion[J].Bulletin of the Chinese Ceramic Society,2017,36(2):589 594.(in Chinese)
    [12]马勇.氯盐侵蚀混凝土结构高温后力学性能的试验研究[D].广州:广州大学,2017.
    MA Yong.Experimental study on mechanics properties of concrete corroded by chlorine salt after high temperature[D].Guangzhou:Guangzhou University,2017.(in Chinese)
    [13]赵羽习.钢筋锈蚀引起混凝土结构锈裂综述[J].东南大学学报(自然科学版),2013,43(5):1122 1134.
    ZHAO Yuxi.State of art of corrosion induced cracking of reinforced concrete structures[J].Journal of Southeast University(Natural Science Edition),2013,43(5):1122 1134.(in Chinese)
    [14]ZHANG R J,CASTEL A,FRANCOIS R.Concrete cover cracking with reinforcement corrosion of RC beam during chloride induced corrosion process[J].Cement and Concrete Research,2010,40(3):415 425.
    [15]曹万林,朱可睿,姜玮,等.高强再生混凝土应力应变全曲线试验研究[J].自然灾害学报,2016,25(2):167 172.
    CAO Wanlin,ZHU Kerui,JIANG Wei,et al.Experimental study on stress strain constitutive relationship of high strength recycled concrete[J].Journal of Natural Disasters,2016,25(2):167 172.(in Chinese)
    [16]肖建庄.再生混凝土单轴受压应力应变全曲线试验研究[J].同济大学学报(自然科学版),2007,35(11):1445 1449.
    XIAO Jianzhuang.Experimental investigation on complete stress strain curve of recycled concrete under uniaxial loading[J].Journal of Tongji University(Natural Science),2007,35(11):1445 1449.(in Chinese)
    [17]过镇海,张秀琴.混凝土在反复荷载作用下的应力应变全曲线[J].工业建筑,1981,11(9):14 17,13.
    GUO Zhenhai,ZHANG Xiuqin.Experimental study on stress strain full curves of concrete under cyclic loading[J].Industrial Construction,1981,11(9):14 17,13.(in Chinese)
    [18]陈宗平,徐金俊,郑华海,等.再生混凝土基本力学性能试验及应力应变本构关系[J].建筑材料学报,2013,16(1):24 32.
    CHEN Zongping,XU Jinjun,ZHENG Huahai,et al.Basic mechanical properties test and stress strain constitutive relations of recycled coarse aggregate concrete[J].Journal of Building Materials,2013,16(1):24 32.(in Chinese)
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钟小平,戴仁礼,袁承斌,夏晋,彭蓝鸽.氯盐环境下钢筋锈蚀损伤混凝土应力应变本构模型[J].建筑材料学报,2021,24(4):788-793

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  • 收稿日期:2020-05-06
  • 最后修改日期:2020-06-08
  • 在线发布日期: 2021-09-06
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