北京工业大学城市减灾与防灾防护教育部重点实验室,北京 100124
金浏(1985— ), 男, 教授, 博导。主要从事混凝土材料与构件尺寸效应方面的研究。 E⁃mail: jinliu@bjut.edu.cn
杜修力(1962— ), 男, 教授, 博导。主要从事建筑结构抗震、结构损伤诊断等方面的研究。 E⁃mail: duxiuli@bjut.edu.cn
收稿:2018-12-07,
修回:2019-02-27,
纸质出版:2021-02-15
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金浏,杨旺贤,余文轩等.基于细观模拟的轻骨料混凝土破坏行为及尺寸效应研究[J].防灾减灾工程学报,2021,41(01):91-99.
JIN Liu,YANG Wangxian,YU Wenxuan,et al.Study on Failure Behavior and Size Effect of Lightweight Aggregate Concrete based on Meso⁃simulation[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):91-99.
金浏,杨旺贤,余文轩等.基于细观模拟的轻骨料混凝土破坏行为及尺寸效应研究[J].防灾减灾工程学报,2021,41(01):91-99. DOI: 10.13409/j.cnki.jdpme.2021.01.011.
JIN Liu,YANG Wangxian,YU Wenxuan,et al.Study on Failure Behavior and Size Effect of Lightweight Aggregate Concrete based on Meso⁃simulation[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):91-99. DOI: 10.13409/j.cnki.jdpme.2021.01.011.
轻骨料混凝土由于其轻质高强及保温隔热性能好等优点,越来越多被应用于实际工程结构。从细观角度出发,将混凝土材料看作由骨料颗粒、砂浆基质及界面过渡区组成的三相复合材料,建立了考虑混凝土材料非均质性影响的二维细观数值分析模型,模拟研究了轻骨料混凝土与普通混凝土压缩和劈拉破坏行为及尺寸效应的异同,并揭示两者破坏机理。结果表明:轻骨料混凝土压缩及劈拉破坏均造成骨料颗粒的断裂,而普通混凝土破坏时骨料很少破坏;轻骨料混凝土由于脆性较强,与普通混凝土相比有更加明显的压缩强度尺寸效应现象;轻骨料混凝土与普通混凝土存在相似的劈拉强度尺寸效应现象。
The lightweight aggregate concrete is widely applied to practical engineering structures due to its advantages of lightweight, high strength and good thermal insulation performance. From a microscopic standpoint, the concrete material is considered as a three-phase composite consisting of aggregate, mortar matrix and interfacial transition zones. A two-dimensional meso-numerical analysis model considering the effect of heterogeneity of concrete material was established. The similarities and differences of compression and splitting failure behavior and size effect between lightweight aggregate concrete and ordinary concrete were studied, and the failure mechanisms of both materials were revealed. The result shows that: the compression and splitting failure of lightweight aggregate concrete cause the fracture of aggregate particles, while the aggregate is intact when the ordinary concrete fails; compared with ordinary concrete, lightweight aggregate concrete has more significant size effect of compressive strength due to its strong brittleness; the size effect of splitting tensile strength of lightweight aggregate concrete is similar to that of ordinary concrete.
Cui H Z , Lo T Y , Memon S A , et al . Effect of lightweight aggregates on the mechanical properties and brittleness of lightweight aggregate concrete [J]. Construction & Building Materials , 2012 , 35 ( 10 ): 149 - 158 .
Kayali O , Haque M N , Zhu B . Some characteristics of high strength fiber reinforced lightweight aggregate concrete [J]. Cement & Concrete Composites , 2003 , 25 ( 2 ): 207 - 213 .
Agnesini M V C , Rossignolo J A . Durability of polymer-modified lightweight aggregate concrete [J]. Cement & Concrete Composites , 2004 , 26 ( 4 ): 375 - 380 .
Ma H L , Cui C , Li X , et al . Study on mechanical properties of steel fiber reinforced autoclaved lightweight shell-aggregate concrete [J]. Materials & Design , 2013 , 52 : 565 - 571 .
Bažant Z P , Planas J . Fracture and size effect in concrete and other quasibrittle materials [M]. The Chemical Rubber Compang Press , 1997 .
杜修力 , 金浏 . 混凝土材料宏观力学特性分析的细观单元等效化模型 [J]. 计算力学学报 , 2012 , 29 ( 5 ): 654 - 661 .
Du X L , Jin L . Meso-element equivalent model for macro-scopic mechanical properties analysis of concrete material [J]. Chinese Journal of Computational Mechanics , 2012 , 29 ( 5 ): 654 - 661 . (in Chinese)
Du X , Jin L , Ma G . A meso-scale analysis method for the simulation of nonlinear damage and failure behavior of reinforced concrete members [J]. International Journal of Damage Mechanics , 2013 , 22 ( 6 ): 878 - 904 .
Bažant Z P , Planas J . Size effect in blunt fracture:concrete,rock,metal [J]. Journal of Engineering Mechanics , 1984 , 110 ( 4 ): 518 - 535 .
Weibull W . The phenomenon of rupture in solids [J]. Proceedings of Royal Sweden Institute of Engineering Research , 1939 , 153 : 1 - 55 .
Carpinteri A , Ferro G . Size effects on tensile fracture properties: a unified explanation based on disorder and fractality of concrete microstructure [J]. Materials & Structures , 1994 , 27 ( 10 ): 563 - 571 .
车轶 , 于磊 . 剪力作用下钢筋混凝土大尺寸无腹筋构件安全性研究 [J]. 建筑结构学报 , 2014 , 35 ( 2 ): 144 - 151 .
Che Y , Yu L . Safety of large reinforced concrete members without web reinforcement subjected to shear [J]. Journal of Building Structures , 2014 , 35 ( 2 ): 144 - 151 . (in Chinese)
Li D , Jin L , Du X L , et al . Size effect tests of normal-strength and high-strength RC columns subjected to axial compressive loading [J]. Engineering Structures , 2016 , 109 : 43 - 60 .
李振宝 , 郭二伟 , 周锡元 , 等 . 大尺度RC梁柱节点抗震性能及尺寸效应试验研究 [J]. 土木工程学报 , 2012 ( 7 ): 39 - 47 .
Li Zh B , Guo E W , Zhou X Y , et al . Seismic behaviors and size effects of large-scale interior beam-column joints of RC frames [J]. China Civil Engineering Journal , 2012 ( 7 ): 39 - 47 . (in Chinese)
Cao Q Y , Sun W , Hao T Y , et al . Size effect on flexural strength of various concrete [J]. Journal of Beijing University of Technology , 2013 , 39 ( 9 ): 1311 - 1315 .
Basche H D , Keller C . Shear strength of lightweight concrete without shear reinforcement [J]. Beton-Und Stahlbetonbau , 2009 , 104 ( 7 ): 399 - 405 .
Wu C H , Kan Y C , Huang C H , et al . Flexural behavior and size effect of full scale reinforced lightweight concrete beam [J]. Journal of Marine Science and Technology , 2011 , 19 ( 2 ): 132 - 140 .
黄锦波 . 轻骨料混凝土和粉煤灰混凝土强度尺寸效应研究 [D]. 北京 : 北京建筑工程学院 , 2007 .
Huang J B . Study on strength size effect of lightweight aggregate concrete and fly ash concrete [D]. Beijing : Beijing Institute of Architectural Engineering , 2007 . (in Chinese)
王振宇 , 丁建彤 , 郭玉顺 . 结构轻骨料混凝土的应力-应变全曲线 [J]. 混凝土 , 2005 ( 3 ): 39 - 41 .
Wang Zh Y , Ding J T , Guo Y Sh . Stress-strain curves of structural lightweight aggregate concretes [J]. Concrete , 2005 ( 3 ): 39 - 41 . (in Chinese)
Du X L , Jin L , Ma G W . Meso-element equivalent method for the simulation of macro mechanical properties of concrete [J]. International Journal of Damage Mechanics , 2013 , 22 ( 5 ): 617 - 642 .
Grassl P , Grégoire D , Solano L R , et al . Meso-scale modelling of the size effect on the fracture process zone of concrete [J]. International Journal of Solids & Structures , 2012 , 49 ( 13 ): 1818 - 1827 .
Song Z , Lu Y . Mesoscopic analysis of concrete under excessively high strain rate compression and implications on interpretation of test data [J]. International Journal of Impact Engineering , 2012 , 46 : 41 ⁃ 55 .
Zhou X Q , Hao H . Modelling of compressive behaviour of concrete-like materials at high strain rate [J]. International Journal of Solids & Structures , 2008 , 45 ( 17 ): 4648 - 4661 .
Jin L , Xu C , Han Y , et al . Effect of end friction on the dynamic compressive mechanical behavior of concrete under medium and low strain rates [J]. Shock and Vibration , 2016 , 2016 : 1 - 20 .
Du X , Jin L , Ma G . Numerical simulation of dynamic tensile-failure of concrete at meso-scale [J]. International Journal of Impact Engineering , 2014 , 66 ( 4 ): 5 - 17 .
金浏 , 杜修力 . 加载速率对混凝土拉伸破坏行为影响的细观数值分析 [J]. 工程力学 , 2015 , 32 ( 8 ): 42 - 49 .
Jin L , Du X L . Meso-scale numerical analysis of the effect of loading rate on the tensile failure behavior of concrete [J]. Engineering Mechanics , 2015 , 32 ( 8 ): 42 - 49 . (in Chinese)
Lee J , Fenves G L . Plastic-damage model for cyclic loading of concrete structures [J]. Journal of Engineering Mechanics , 1998 , 124 ( 8 ): 892 - 900 .
Dilger W H , Koch R , Kowalczyk R . Ductility of plain and confined concrete under different strain rates [J]. Journal Proceedings , 1984 , 81 ( 1 ): 73 - 81 .
陈桂斌 . 轻骨料混凝土力学性能的细观数值模拟研究 [D]. 大连 : 大连理工大学 , 2007 .
Chen G B . Meso-numerical simulation of mechanical properties of lightweight aggregate concrete [D]. Dalian : Dalian University of Technology , 2007 . (in Chinese)
Bažant Z P , Caner F C , Adley M D , et al . Fracturing rate effect and creep in micro-plane model for dynamics [J]. ASCE Journal of Engineering Mechanics , 2000 , 126 ( 9 ): 962 - 970 .
过镇海 , 张秀琴 , 张达成 , 等 . 混凝土应力—应变全曲线的试验研究 [J]. 建筑结构学报 , 1982 , 3 ( 1 ): 1 - 12 .
Guo Zh H , Zhang X Q , Zhang D Ch , et al . Experimental investigation of the complete stress-strain curve of concrete [J]. Journal of Building Structures , 1982 , 3 ( 1 ): 1 - 12 . (in Chinese)
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