再生大骨料自密实混凝土梁裂缝开展机理研究
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摘要
再生大骨料自密实混凝土梁的裂缝开展机理作为梁结构可靠性设计的理论基础,具有重要的工程意义。本文对不同再生大骨料取代率的再生大骨料自密实混凝土梁进行了数值仿真模拟,分析了再生大骨料自密实混凝土梁的裂缝开展情况和荷载-挠度曲线。结果表明,采用随机骨料模型对再生大骨料自密实混凝土梁进行裂缝开展模拟的方法可行;裂缝主要沿着再生大骨料和自密实混凝土交界面扩展,少部分经过再生大骨料;不同再生大骨料取代率的再生大骨料自密实混凝土梁的裂缝开展机理相同;相比自密实混凝土,再生大骨料自密实混凝土梁的承载力降低,脆性增强。
As the theoretical basis for reliability design of beam structure,crack propagation mechanism of recycled large aggregate self-compacting concrete beam is of great engineering significance.In this paper,numerical simulation of recycled large aggregate self-compacting concrete beam with different big recycled aggregate replacement rate was carried out,and the crack propagation and load-deflection curve of recycled large aggregate self-compacting concrete beam were analyzed.Results show that the method of random aggregate model is feasible for the crack propagation simulation of recycled large aggregate self-compacting concrete beams.The cracks mainly propagate along the interface between recycled large aggregate and self-compacting concrete,and a few of cracks pass through the recycled large aggregate.The crack propagation mechanism of recycled large aggregate self-compacting concrete beam with different big recycled aggregate replacement rate is the same.Compared with self-compacting concrete,the bearing capacity of recycled large aggregate beam decreases,and the brittleness increases.
As the theoretical basis for reliability design of beam structure,crack propagation mechanism of recycled large aggregate self-compacting concrete beam is of great engineering significance.In this paper,numerical simulation of recycled large aggregate self-compacting concrete beam with different big recycled aggregate replacement rate was carried out,and the crack propagation and load-deflection curve of recycled large aggregate self-compacting concrete beam were analyzed.Results show that the method of random aggregate model is feasible for the crack propagation simulation of recycled large aggregate self-compacting concrete beams.The cracks mainly propagate along the interface between recycled large aggregate and self-compacting concrete,and a few of cracks pass through the recycled large aggregate.The crack propagation mechanism of recycled large aggregate self-compacting concrete beam with different big recycled aggregate replacement rate is the same.Compared with self-compacting concrete,the bearing capacity of recycled large aggregate beam decreases,and the brittleness increases.
引文
[1]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2008(XIAO Jianzhuang.Recycled concrete[M].Beijing:China Architecture Industry Press,2008(in Chinese))
[2]金峰,安雪晖,石建军,等.堆石混凝土及堆石混凝土大坝[J].水利学报,2005,36(11):1347-1352(JINFeng,AN Xuehui,SHI Jianjun,et al.Study on rock-fill concrete dam[J].Journal of Hydraulic Engineering,2005,36(11):1347-1352(in Chinese))
[3]欧阳雯欣,王清远.灾后再生混凝土的应用及推广分析[J].四川建筑科学研究,2010,36(6):178-184(OUYANG Wenxin,WANG Qingyuan.Application and extension analysis of regenerated concrete after disaster[J].Sichuan Building Science,2010,36(6):178-184(in Chinese))
[4]卫国祥,雷颖占.混凝土再生骨料的研究分析[J].四川建筑科学研究,2006,32(4):115-117(WEI Guoxiang,LEI Yingzhan.The researching and analysing of regenerated aggregate of concrete[J].Sichuan Building Science,2006,32(4):115-117(in Chinese))
[5]李静,姜琳,刘震,等.不同种类再生大骨料制作自密实堆积混凝土的实验研究[J].实验力学,2010,25(4):425-430(LI Jing,JIANG Lin,LIU Zhen,et al.Experimental study of self-compacting accumulation concrete prepared from different recycled big aggregate[J].Journal of Experimental Mechanics,2010,25(4):425-430(in Chinese))
[6]李静,王亚林,姜琳,等.再生大骨料自密实混凝土梁正截面受力特性研究[J].实验力学,2017,32(6):781-788(LI Jing,WANG Yalin,JIANG Lin,et al.Study on the normal section mechanical behavior of big recycled aggregate self-compacting concrete beam[J].Journal of Experimental Mechanics,2017,32(6):781-788(in Chinese))
[7]李静,王林富,刘震,等.再生大骨料与自密实混凝土粘结性能研究[J].低温建筑技术,2010,32(9):10-12(LI Jing,WANG Linfu,LIU Zhen,et al.Research on the binding properties between big recycled aggregates and self-compacting concrete[J].Low Temperature Architecture Technology,2010,32(9):10-12(in Chinese))
[8]王林富.再生大骨料自密实混凝土受压力学性能研究[D].中国石油大学,2011(WANG Linfu.Research on compression mechanical properties of big recycled aggregate-filled Concrete[D].China University of Petroleum,2011(in Chinese))
[9]王海超,孙利敏.再生大骨料自密实堆石混凝土力学性能研究[J].混凝土,2013(8):137-139(WANGHaichao,SUN Limin.Study on the mechanical behavior of big recycled aggregates fill concrete[J].Concrete,2007,2013(8):137-139(in Chinese))
[10]安雪晖,金峰,石建军.自密实混凝土充填堆石体试验研究[J].混凝土,2005(1):3-6(AN Xuehui,JIN Feng,SHI Jianjun.Experimental study of self-compacting concrete filled prepacked rock[J].Concrete,2005(1):3-6(in Chinese))
[11]唐欣薇,石建军,张志恒,等.自密实堆石混凝土力学性能的细观仿真与试验研究[J].水利学报,2009,40(7):844-849(TANG Xinwei,SHI Jianjun,ZHANG Zhiheng,et al.Analysis on characteristics of spatial-temporal precipitation distribution based on cloud model[J].Journal of Hydraulic Engineering,2009,40(7):844-849(in Chinese))
[12]钟文,潘坚文.堆石混凝土抗压强度影响因素细观分析[J].水力发电学报,2016,35(5):15-22(ZHONGWen,PAN Jianwen.Meso-scale analysis of influence factors on compressive strength of rock-filled concrete using particle-based discrete element method[J].Journal of Hydroelectric Engineering,2016,35(5):15-22(in Chinese))
[13]肖建庄,李文贵,刘琼.模型再生混凝土单轴受压性能细观数值模拟[J].同济大学学报(自然科学版),2011,39(6):791-797(XIAO Jianzhuang,LI Wengui,LIU Qiong.Meso-level numerical simulation mechanical properties of modeled recycled concrete under uniaxial compression[J].Journal of Tongji University(Natural Science),2011,39(6):791-797(in Chinese))
[14]党娜娜,彭一江,周化平,等.基于随机骨料模型的再生混凝土材料细观损伤分析方法[J].固体力学学报,2013(S1):58-62(DANG Nana,PENG Yijiang,ZHOU Huaping,et al.A meso-mechanical damage method base on random aggregate model for recycled aggregate concrete[J].Chinese Journal of Solid Mechanics,2013(S1):58-62(in Chinese))
[15]Schlangen E,van Mier G M.Simple lattice model for numerical simulation of fracture of concrete materials and structures[J].Materials and Structures,1992,25(9):534-542.
[16]张安哥,朱成九,陈梦成.疲劳、断裂与损伤[M].成都:西南交通大学出版社,2006(ZHANG Ange,ZHUChengjiu,CHEN Mengcheng.Fatigue,fracture and damage[M].Chengdu:Southwest Jiaotong University Press,2006(in Chinese))
[17]徐文杰,胡瑞林,岳中琦,等.土石混合体细观结构及力学特性数值模拟研究[J].岩石力学与工程学报,2007,26(2):300-311(XU Wenjie,HU Runlin,YUE Zhongqi,et al.Mesostructural character and numerical simulation of mechanical properties of soil-rock mixtures[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(2):300-311(in Chinese))
[18]GB 50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010(GB 50010-2010,Code for design of concrete structures[S].Beijing:China Architecture Industry Press,2010(in Chinese))
[2]金峰,安雪晖,石建军,等.堆石混凝土及堆石混凝土大坝[J].水利学报,2005,36(11):1347-1352(JINFeng,AN Xuehui,SHI Jianjun,et al.Study on rock-fill concrete dam[J].Journal of Hydraulic Engineering,2005,36(11):1347-1352(in Chinese))
[3]欧阳雯欣,王清远.灾后再生混凝土的应用及推广分析[J].四川建筑科学研究,2010,36(6):178-184(OUYANG Wenxin,WANG Qingyuan.Application and extension analysis of regenerated concrete after disaster[J].Sichuan Building Science,2010,36(6):178-184(in Chinese))
[4]卫国祥,雷颖占.混凝土再生骨料的研究分析[J].四川建筑科学研究,2006,32(4):115-117(WEI Guoxiang,LEI Yingzhan.The researching and analysing of regenerated aggregate of concrete[J].Sichuan Building Science,2006,32(4):115-117(in Chinese))
[5]李静,姜琳,刘震,等.不同种类再生大骨料制作自密实堆积混凝土的实验研究[J].实验力学,2010,25(4):425-430(LI Jing,JIANG Lin,LIU Zhen,et al.Experimental study of self-compacting accumulation concrete prepared from different recycled big aggregate[J].Journal of Experimental Mechanics,2010,25(4):425-430(in Chinese))
[6]李静,王亚林,姜琳,等.再生大骨料自密实混凝土梁正截面受力特性研究[J].实验力学,2017,32(6):781-788(LI Jing,WANG Yalin,JIANG Lin,et al.Study on the normal section mechanical behavior of big recycled aggregate self-compacting concrete beam[J].Journal of Experimental Mechanics,2017,32(6):781-788(in Chinese))
[7]李静,王林富,刘震,等.再生大骨料与自密实混凝土粘结性能研究[J].低温建筑技术,2010,32(9):10-12(LI Jing,WANG Linfu,LIU Zhen,et al.Research on the binding properties between big recycled aggregates and self-compacting concrete[J].Low Temperature Architecture Technology,2010,32(9):10-12(in Chinese))
[8]王林富.再生大骨料自密实混凝土受压力学性能研究[D].中国石油大学,2011(WANG Linfu.Research on compression mechanical properties of big recycled aggregate-filled Concrete[D].China University of Petroleum,2011(in Chinese))
[9]王海超,孙利敏.再生大骨料自密实堆石混凝土力学性能研究[J].混凝土,2013(8):137-139(WANGHaichao,SUN Limin.Study on the mechanical behavior of big recycled aggregates fill concrete[J].Concrete,2007,2013(8):137-139(in Chinese))
[10]安雪晖,金峰,石建军.自密实混凝土充填堆石体试验研究[J].混凝土,2005(1):3-6(AN Xuehui,JIN Feng,SHI Jianjun.Experimental study of self-compacting concrete filled prepacked rock[J].Concrete,2005(1):3-6(in Chinese))
[11]唐欣薇,石建军,张志恒,等.自密实堆石混凝土力学性能的细观仿真与试验研究[J].水利学报,2009,40(7):844-849(TANG Xinwei,SHI Jianjun,ZHANG Zhiheng,et al.Analysis on characteristics of spatial-temporal precipitation distribution based on cloud model[J].Journal of Hydraulic Engineering,2009,40(7):844-849(in Chinese))
[12]钟文,潘坚文.堆石混凝土抗压强度影响因素细观分析[J].水力发电学报,2016,35(5):15-22(ZHONGWen,PAN Jianwen.Meso-scale analysis of influence factors on compressive strength of rock-filled concrete using particle-based discrete element method[J].Journal of Hydroelectric Engineering,2016,35(5):15-22(in Chinese))
[13]肖建庄,李文贵,刘琼.模型再生混凝土单轴受压性能细观数值模拟[J].同济大学学报(自然科学版),2011,39(6):791-797(XIAO Jianzhuang,LI Wengui,LIU Qiong.Meso-level numerical simulation mechanical properties of modeled recycled concrete under uniaxial compression[J].Journal of Tongji University(Natural Science),2011,39(6):791-797(in Chinese))
[14]党娜娜,彭一江,周化平,等.基于随机骨料模型的再生混凝土材料细观损伤分析方法[J].固体力学学报,2013(S1):58-62(DANG Nana,PENG Yijiang,ZHOU Huaping,et al.A meso-mechanical damage method base on random aggregate model for recycled aggregate concrete[J].Chinese Journal of Solid Mechanics,2013(S1):58-62(in Chinese))
[15]Schlangen E,van Mier G M.Simple lattice model for numerical simulation of fracture of concrete materials and structures[J].Materials and Structures,1992,25(9):534-542.
[16]张安哥,朱成九,陈梦成.疲劳、断裂与损伤[M].成都:西南交通大学出版社,2006(ZHANG Ange,ZHUChengjiu,CHEN Mengcheng.Fatigue,fracture and damage[M].Chengdu:Southwest Jiaotong University Press,2006(in Chinese))
[17]徐文杰,胡瑞林,岳中琦,等.土石混合体细观结构及力学特性数值模拟研究[J].岩石力学与工程学报,2007,26(2):300-311(XU Wenjie,HU Runlin,YUE Zhongqi,et al.Mesostructural character and numerical simulation of mechanical properties of soil-rock mixtures[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(2):300-311(in Chinese))
[18]GB 50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010(GB 50010-2010,Code for design of concrete structures[S].Beijing:China Architecture Industry Press,2010(in Chinese))
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