荷载历史对混凝土动态受压损伤特性影响试验研究
|
摘要
为了研究荷载历史对混凝土应力应变全曲线、动态抗压强度及应力和应变空间动态损伤特性的影响,在应变速率10-5/s～10-2/s范围内,对历经了0%、30%、50%和75%极限抗压强度荷载历史后的普通混凝土受压试件进行了单轴动态抗压试验。试验结果表明,不同应变速率下历经荷载历史后,混凝土应力应变全曲线发生明显的变化;混凝土动态抗压强度随着应变速率的增加而增加,荷载历史超过某一槛值后,混凝土抗压极限强度明显降低;混凝土损伤应力槛值随着应变速率的增加而增加,历经超过损伤槛值的荷载历史后,混凝土的损伤应力槛值随着荷载历史的增加而减小,且损伤值随着荷载历史的增加而增加;混凝土损伤应变槛值受应变速率的影响不大,但随着荷载历史的增加而减小,且损伤值随着荷载历史的增加而增加。
A dynamic compressive test of concrete specimens, experienced load histories of 0%, 30%, 50% and 75% ultimate strengths, was carried out on the static-dynamic triaxial test system, with the strain rates range from 10-5/s to 10-2/s. Effects of load histories on the strain-stress curve, the compressive strength, the dynamic damage behavior in stress and strain spaces at different strain rates were studied. Results show that the strain-stress curve of concrete is effected obviously by strain rates and load histories. The compressive strength of concrete increases with the strain rate and decreases when the load history exceeds the damage stress threshold. In the stress space, the damage stress threshold of concrete increases with the strain rate. When the load history exceeds the damage stress threshold, the damage stress threshold decreases with the strain rate and the damage value increases with the load history. In the strain space, the damage strain threshold of concrete is independent on the strain rate but decreases with the load history. The damage value increases with the load history.
A dynamic compressive test of concrete specimens, experienced load histories of 0%, 30%, 50% and 75% ultimate strengths, was carried out on the static-dynamic triaxial test system, with the strain rates range from 10-5/s to 10-2/s. Effects of load histories on the strain-stress curve, the compressive strength, the dynamic damage behavior in stress and strain spaces at different strain rates were studied. Results show that the strain-stress curve of concrete is effected obviously by strain rates and load histories. The compressive strength of concrete increases with the strain rate and decreases when the load history exceeds the damage stress threshold. In the stress space, the damage stress threshold of concrete increases with the strain rate. When the load history exceeds the damage stress threshold, the damage stress threshold decreases with the strain rate and the damage value increases with the load history. In the strain space, the damage strain threshold of concrete is independent on the strain rate but decreases with the load history. The damage value increases with the load history.
引文
[ 1] Abrams D A . Effect of rate of application of load on the compressive strength of concrete [J ]. ASTM J . ,1917 ,17 :364-377 .
[ 2] Bischoff H ,Perry S H . Compressive behaviour of concrete at high strain rates [J ]. Materials and Structures ,1991 ,24 (6 ): 425-450 .
[3 ] 封伯昊,张立翔,李桂青 .混凝土损伤研究综述[ J] .昆明理工大学学报, 2001 ,26 (3 ): 21-26 .
[4 ] 李庆斌,邓宗才,张立翔 .考虑初始弹模变化的混凝土动力损伤本构模型[ J] .清华大学学报, 2003 ,43 (8 ): 1088-1091 .
[5 ] 邓宗才 .单轴状态下混凝土的静力、动力损伤本构模型[ J] .山东建材学院学报, 1999 ,13 (4 ): 334-337 .
[6 ] 王道荣,胡时胜 .冲击荷载下混凝土材料损伤演化规律的研究[ J] .岩石力学与工程学报, 2003 ,22 (2 ): 223-226 .
[7 ] 杜荣强,林皋 .混凝土动力损伤本构关系的基础理论及应用[ J] .哈尔滨工业大学学报, 2006 ,38 (5 ): 746-751 .
[8 ] 白卫峰,陈健云,钟红 .基于混凝土率相关损伤模型的重力坝地震动超载响应分析[ J] .水利学报, 2006 ,37 (7 ): 820-826 .
[9 ] 吴建营,李杰 .考虑应变率效应的混凝土动力弹塑性损伤本构模型[ J] .同济大学学报, 2006 ,34 (11 ): 1427-1430 .
[10 ] 陈健云,白卫峰 .考虑动态应变率效应的混凝土单轴拉伸统计损伤模型[ J] .岩石力学与工程学报, 2007 ,26 (8 ): 1603-1611 .
[11 ] 肖诗云,田子坤 .混凝土单轴动态受拉损伤试验研究[ J] .土木工程学报, 2008 ,41 (7 ): 14-20 .
[12 ] 艾亿谋,杜成斌,洪永文,等 .混凝土坝抗震加固中钢筋混凝土的动力本构模型[ J] .水利学报, 2009 ,40 (3 ): 289-295 .
[13 ]Eibl J ,Schmidt-Hurtienne B. Strain-rate-sensitive constitutive law for concrete [J ]. Journal fo Engineering Mechanics ,1999 ,125 (12 ): 1411-1420 .
[14 ]Burlion N ,Gatuingt F . Compaction and tensile damage in concrete :constitutive modelling and application to dynamics [J ]. Comput . Methods Appl . Mech . Engrg . ,2000 ,183 :291-308 .
[15 ]Piti S ,Pichai N ,Sidney M . Effect of loading rate on damage of concrete [J ]. Cement and Concrete Research ,2004 ,34 (11 ): 2127-2134 .
[16 ] 王瑞敏,宋玉普,赵国藩 .混凝土在等幅重复应力作用下的疲劳强度[ J] .工业建筑, 1992 (12 ): 8-11 .
[17 ] 林皋,周洪涛,黄承逵 .循环加载历史对混凝土断裂特性影响的试验研究[ J] .水利学报, 1994 (5 ): 25-30 .
[18 ] 林皋,王哲,逯静洲,等 .三向等压荷载历史对混凝土的强度和变形特性影响的研究[ J] .水力发电学报, 2001 ,20 (3 ): 31-41 .
[19 ] 邓宗才,钱在兹 .低周循环加载历史对碳纤维混凝土断裂特性影响的试验研究[ J] .中国公路学报, 2000 ,13 (2 ): 64-68 .
[20 ] 袁建力,王仪,张靖静,等 .荷载历程对预应力梁的耗能及破坏特征的影响[ J] .工程力学, 2007 ,24 (10 ): 137-143 .
[21 ] 逯静洲,林皋,肖诗云,等 .混凝土材料经历三向受压荷载历史后抗拉强度劣化的研究[ J] .水利学报, 2001 (1 ): 68-75 .
[22 ] 逯静洲,林皋,肖诗云,等 .混凝土材料经历三向受压荷载历史后抗压强度劣化的研究[ J] .水利学报, 2001 (11 ): 8-14 .
[23 ] 逯静洲,林皋,王哲 .混凝土经历荷载历史后损伤特性研究[ J] .烟台大学学报, 2004 ,17 (4 ): 277-287 .
[24 ]Cook D J ,Chindaprasirt P . Infulence of loading history upon the compressive properities of concrete [J ]. Magazine of Concrete Research ,1980 ,32 (111 ): 89-100 .
[25 ]Cook D J ,Chindaprasirt P . Infulence of loading history upon the tensile properities of concrete [J ]. Magazine of Concrete Research ,1981 ,33 (116 ): 154-160 .
[26 ]Gerstle K H ,Ko H Y . Stress-strain curves of concrete under multiaxial load histories [C ]//Preprints - William Prager Symposium on Mechanics of Geomaterials :Rocks ,Concretes ,Soils ,Evanston ,IL . USA 1983 .
[27 ]Stankowski T ,Gerstle K H . Simple formulation of concrete behavior under multiaxial load histories [J ]. Journal of the American Concrete Institute ,1985 ,82 (2 ): 213-221 .
[28 ]Walraven J ,Frenay J ,Pruijssers A . Influence of concrete strength and load history on the shear friction capacity of concrete members [J ]. PCI Journal (Prestressed Concrete Institute ), 1987 ,32 (1 ): 66-84 .
[ 29 ]Akutagawa S ,Jeang F L ,Hawkins N M ,et al . Effects of loading history on fracture properties of concrete [J ]. ACI Materials Journal ,1991 ,88 (2 ): 170-180 .
[30 ]Bazant Z P ,Oh B H . Strain-rate effect in rapid triaxial loading of concrete [J ]. Journal of Engineering Mechanics Division ,1982 ,108 (5 ): 764-782 .
[ 2] Bischoff H ,Perry S H . Compressive behaviour of concrete at high strain rates [J ]. Materials and Structures ,1991 ,24 (6 ): 425-450 .
[3 ] 封伯昊,张立翔,李桂青 .混凝土损伤研究综述[ J] .昆明理工大学学报, 2001 ,26 (3 ): 21-26 .
[4 ] 李庆斌,邓宗才,张立翔 .考虑初始弹模变化的混凝土动力损伤本构模型[ J] .清华大学学报, 2003 ,43 (8 ): 1088-1091 .
[5 ] 邓宗才 .单轴状态下混凝土的静力、动力损伤本构模型[ J] .山东建材学院学报, 1999 ,13 (4 ): 334-337 .
[6 ] 王道荣,胡时胜 .冲击荷载下混凝土材料损伤演化规律的研究[ J] .岩石力学与工程学报, 2003 ,22 (2 ): 223-226 .
[7 ] 杜荣强,林皋 .混凝土动力损伤本构关系的基础理论及应用[ J] .哈尔滨工业大学学报, 2006 ,38 (5 ): 746-751 .
[8 ] 白卫峰,陈健云,钟红 .基于混凝土率相关损伤模型的重力坝地震动超载响应分析[ J] .水利学报, 2006 ,37 (7 ): 820-826 .
[9 ] 吴建营,李杰 .考虑应变率效应的混凝土动力弹塑性损伤本构模型[ J] .同济大学学报, 2006 ,34 (11 ): 1427-1430 .
[10 ] 陈健云,白卫峰 .考虑动态应变率效应的混凝土单轴拉伸统计损伤模型[ J] .岩石力学与工程学报, 2007 ,26 (8 ): 1603-1611 .
[11 ] 肖诗云,田子坤 .混凝土单轴动态受拉损伤试验研究[ J] .土木工程学报, 2008 ,41 (7 ): 14-20 .
[12 ] 艾亿谋,杜成斌,洪永文,等 .混凝土坝抗震加固中钢筋混凝土的动力本构模型[ J] .水利学报, 2009 ,40 (3 ): 289-295 .
[13 ]Eibl J ,Schmidt-Hurtienne B. Strain-rate-sensitive constitutive law for concrete [J ]. Journal fo Engineering Mechanics ,1999 ,125 (12 ): 1411-1420 .
[14 ]Burlion N ,Gatuingt F . Compaction and tensile damage in concrete :constitutive modelling and application to dynamics [J ]. Comput . Methods Appl . Mech . Engrg . ,2000 ,183 :291-308 .
[15 ]Piti S ,Pichai N ,Sidney M . Effect of loading rate on damage of concrete [J ]. Cement and Concrete Research ,2004 ,34 (11 ): 2127-2134 .
[16 ] 王瑞敏,宋玉普,赵国藩 .混凝土在等幅重复应力作用下的疲劳强度[ J] .工业建筑, 1992 (12 ): 8-11 .
[17 ] 林皋,周洪涛,黄承逵 .循环加载历史对混凝土断裂特性影响的试验研究[ J] .水利学报, 1994 (5 ): 25-30 .
[18 ] 林皋,王哲,逯静洲,等 .三向等压荷载历史对混凝土的强度和变形特性影响的研究[ J] .水力发电学报, 2001 ,20 (3 ): 31-41 .
[19 ] 邓宗才,钱在兹 .低周循环加载历史对碳纤维混凝土断裂特性影响的试验研究[ J] .中国公路学报, 2000 ,13 (2 ): 64-68 .
[20 ] 袁建力,王仪,张靖静,等 .荷载历程对预应力梁的耗能及破坏特征的影响[ J] .工程力学, 2007 ,24 (10 ): 137-143 .
[21 ] 逯静洲,林皋,肖诗云,等 .混凝土材料经历三向受压荷载历史后抗拉强度劣化的研究[ J] .水利学报, 2001 (1 ): 68-75 .
[22 ] 逯静洲,林皋,肖诗云,等 .混凝土材料经历三向受压荷载历史后抗压强度劣化的研究[ J] .水利学报, 2001 (11 ): 8-14 .
[23 ] 逯静洲,林皋,王哲 .混凝土经历荷载历史后损伤特性研究[ J] .烟台大学学报, 2004 ,17 (4 ): 277-287 .
[24 ]Cook D J ,Chindaprasirt P . Infulence of loading history upon the compressive properities of concrete [J ]. Magazine of Concrete Research ,1980 ,32 (111 ): 89-100 .
[25 ]Cook D J ,Chindaprasirt P . Infulence of loading history upon the tensile properities of concrete [J ]. Magazine of Concrete Research ,1981 ,33 (116 ): 154-160 .
[26 ]Gerstle K H ,Ko H Y . Stress-strain curves of concrete under multiaxial load histories [C ]//Preprints - William Prager Symposium on Mechanics of Geomaterials :Rocks ,Concretes ,Soils ,Evanston ,IL . USA 1983 .
[27 ]Stankowski T ,Gerstle K H . Simple formulation of concrete behavior under multiaxial load histories [J ]. Journal of the American Concrete Institute ,1985 ,82 (2 ): 213-221 .
[28 ]Walraven J ,Frenay J ,Pruijssers A . Influence of concrete strength and load history on the shear friction capacity of concrete members [J ]. PCI Journal (Prestressed Concrete Institute ), 1987 ,32 (1 ): 66-84 .
[ 29 ]Akutagawa S ,Jeang F L ,Hawkins N M ,et al . Effects of loading history on fracture properties of concrete [J ]. ACI Materials Journal ,1991 ,88 (2 ): 170-180 .
[30 ]Bazant Z P ,Oh B H . Strain-rate effect in rapid triaxial loading of concrete [J ]. Journal of Engineering Mechanics Division ,1982 ,108 (5 ): 764-782 .
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心