混凝土多孔砖砌体材料抗剪性能试验研究
|
摘要
通过试验,系统研究了混凝土多孔砖的抗剪性能,提出了混凝土多孔砖砌体材料抗剪强度的计算方法,给出了灰缝的剪应力-剪应变本构关系计算模型,为制定《混凝土砖建筑技术规范》(CECS257:2009)提供了支持.结果表明:混凝土多孔砖砌体的抗剪强度大于同等级下普通砖砌体;抗剪强度随块型的不同而有少许差别;有初始压应力混凝土多孔砖砌体的抗剪强度较无初始压应力的小;有加载历史砖砌体的抗剪强度较无加载历史的大;压-剪复合作用下混凝土多孔砖砌体抗剪强度在一定范围内符合Mohr-Coulomb准则;灰缝剪应力-剪应变曲线的初始斜率较大,当接近破坏应力时,应变迅速增大,曲线接近水平.
Based on shear tests,the shear behavior of perforated concrete brick masonry materials was systematically studied,a calculation equation for the shear strength of the material was deduced,a constitutive model for the mortar joint in perforated concrete brick masonry under shear was proposed,which provided the basic references for the development of "Technical Specifications for Concrete Perforated Brick Masonry Buildings"(CECS257:2009).The results indicate that the shear strength of perforated concrete brick masonry is higher than that of fired perforated brick masonry with the same brick and mortar strength.For the different type of bricks the shear strength of masonry materials are a little bit different,the shear strength of the masonry with initial compressive stress in construction is lower than that of the masonry without initial compressive stress,the shear strength of the masonry with loading history is higher than that of the masonry without loading history,and the shear strength of masonry under compression can be determined with the Mohr-Coulomb criterion in a certain range.The results also indicate that the initial slop of the shear stress-shear strain curve is big;when the stress approaches the ultimate stress,the strain increases rapidly,but the stress is almost a constant.
Based on shear tests,the shear behavior of perforated concrete brick masonry materials was systematically studied,a calculation equation for the shear strength of the material was deduced,a constitutive model for the mortar joint in perforated concrete brick masonry under shear was proposed,which provided the basic references for the development of "Technical Specifications for Concrete Perforated Brick Masonry Buildings"(CECS257:2009).The results indicate that the shear strength of perforated concrete brick masonry is higher than that of fired perforated brick masonry with the same brick and mortar strength.For the different type of bricks the shear strength of masonry materials are a little bit different,the shear strength of the masonry with initial compressive stress in construction is lower than that of the masonry without initial compressive stress,the shear strength of the masonry with loading history is higher than that of the masonry without loading history,and the shear strength of masonry under compression can be determined with the Mohr-Coulomb criterion in a certain range.The results also indicate that the initial slop of the shear stress-shear strain curve is big;when the stress approaches the ultimate stress,the strain increases rapidly,but the stress is almost a constant.
引文
[1]杨伟军,禹慧,田俊杰,等.混凝土空心砖砌体抗剪强度试验研究[J].长沙交通学院学报,2004,20(3):43-47. YANG Wei-jun,YU Hui,TIAN Jun-jie et al.Experimental study on shear test of concrete hollow brick masonry[J]. Journal of Changsha Communications University,2004,20 (3):43-47.(in Chinese)
[2]王书祥,任权昌.混凝土多孔砖砌体力学性能试验研究[J].新型建筑材料,2006(3):13-15. WANG Shu-xiang,REN Quan chang.Experimental study on basic mechanical properties of concrete perforated brick masonry [J],New Building Materials,2006(3):13-15.(in Chinese)
[3]张发生,陈光辉.混凝土多孔砖砌体试验分析及应用技术研究[J].设计与施工,2006(9):51-53. ZHANG Fa-sheng,CHEN Guang-hui.Experimental analysis and applied technology of concrete perforated brick masonry [J].Design and Construction,2006(9):51-53.(in Chinese)
[4]钱晓倩,钱志宇,孟涛,等.混凝土多孔砖的砌体力学性能及应用[J].建筑砌块与砌块建筑,2004(4):195-199. QIAN Xiao-qian,QIAN Zhi-yu,Meng Tao,et al.Mechanic performance and application of concrete perforated brick masonry [J].Building Block and Block Building,2004(4):195- 199.(in Chinese)
[5]LOURENCO P B,BARROS J O,OLIVEIRA J T.Shear testing of stack bonded masonry[J].Construction and Building Materials,2004,18(2):125-132.
[6]GABOR A,FERRIER E,JACQUELIN E,et al.Analysis and modeling of the in-plane shear behavior of hollow brick masonry panels[J].Construction and Building Materials,2006, 20(5):308-321.
[7]RAHMAN M A,ANAND S C.Empirical mohr-coulomb failure criterion for concrete block-mortar joints[J].Journal of Structural Engineering,1994,120(8):2408-2422.
[8]徐志英.岩石力学[M].北京:水利电力出版社,1993:45-50. XU Zhi-ying.Rock mechanics[M].Beijing:Water Power Press,1993:45-50.(in Chinese)
[9]王伟.砂浆抗剪强度参数的试验研究[J].水利与建筑工程学报,2005,3(4):30-32. WANG Wei.Test study on shear strength parameters of mortar [J].Journal of Water Resources and Architectural Engineering, 2005,3(4):30-32.(in Chinese)
[10]蒋昭瑜,肖林,宋伟权.砌体砂浆长期体积安定性现场鉴定方法的探讨[J].工程质量,2001(10):41-42. JIANG Zhao-yu,XIAO Lin,SONG Wei-quan.Discussion on long-term consistency in volume of masonry mortar of site identification method[J].Quality of Civil Engineering and Construction,2001(10):41-42.(in Chinese)
[11]洪峰,王绍博.砌体结构抗震抗剪强度分析[J].地震工程与工程振动,2004,20(3):28-33. HONG Feng,WANG Shao-bo.Analysis of earthquake shear strength of masonry structures[J].Harbin:Earthquake Engineering and Engineering Vibration,2004,20(3):28-33.(in Chinese)
[12]陈贡联.混凝土多孔砖砌体结构静、动力性能研究[D].上海:同济大学,2010. CHEN Gong-lian.Study on static and dynamic mechanical behavior of concrete perforated brick masonry structures[D]. Shanghai:Tongji University,2010.(in Chinese)
[13]苗吉军.地震作用下砌体结构倒塌反应的计算机仿真分析[D].上海:同济大学,2003. MIAO Ji-jun.Computer simulation analysis of collapse response for masonry structures under earthquake[D].Shanghai: Tongji University,2003.(in Chinese)
[14]王卓琳.基于离散单元法的混凝土细观力学模型及其应用[D].上海:同济大学,2009. WANG Zhuo-lin.Study and application of mesoscopic mechanical model of concrete based on the discrete element method[D].Shanghai:Tongji University,2009.(in Chinese)
[15]朱伯龙.砌体结构设计原理[M].上海:同济大学出版社, 1991:17-18. ZHU Bo-long.Masonry structure design principle[M].Shanghai: Tongji University Press,1991:17-18.(in Chinese)
[2]王书祥,任权昌.混凝土多孔砖砌体力学性能试验研究[J].新型建筑材料,2006(3):13-15. WANG Shu-xiang,REN Quan chang.Experimental study on basic mechanical properties of concrete perforated brick masonry [J],New Building Materials,2006(3):13-15.(in Chinese)
[3]张发生,陈光辉.混凝土多孔砖砌体试验分析及应用技术研究[J].设计与施工,2006(9):51-53. ZHANG Fa-sheng,CHEN Guang-hui.Experimental analysis and applied technology of concrete perforated brick masonry [J].Design and Construction,2006(9):51-53.(in Chinese)
[4]钱晓倩,钱志宇,孟涛,等.混凝土多孔砖的砌体力学性能及应用[J].建筑砌块与砌块建筑,2004(4):195-199. QIAN Xiao-qian,QIAN Zhi-yu,Meng Tao,et al.Mechanic performance and application of concrete perforated brick masonry [J].Building Block and Block Building,2004(4):195- 199.(in Chinese)
[5]LOURENCO P B,BARROS J O,OLIVEIRA J T.Shear testing of stack bonded masonry[J].Construction and Building Materials,2004,18(2):125-132.
[6]GABOR A,FERRIER E,JACQUELIN E,et al.Analysis and modeling of the in-plane shear behavior of hollow brick masonry panels[J].Construction and Building Materials,2006, 20(5):308-321.
[7]RAHMAN M A,ANAND S C.Empirical mohr-coulomb failure criterion for concrete block-mortar joints[J].Journal of Structural Engineering,1994,120(8):2408-2422.
[8]徐志英.岩石力学[M].北京:水利电力出版社,1993:45-50. XU Zhi-ying.Rock mechanics[M].Beijing:Water Power Press,1993:45-50.(in Chinese)
[9]王伟.砂浆抗剪强度参数的试验研究[J].水利与建筑工程学报,2005,3(4):30-32. WANG Wei.Test study on shear strength parameters of mortar [J].Journal of Water Resources and Architectural Engineering, 2005,3(4):30-32.(in Chinese)
[10]蒋昭瑜,肖林,宋伟权.砌体砂浆长期体积安定性现场鉴定方法的探讨[J].工程质量,2001(10):41-42. JIANG Zhao-yu,XIAO Lin,SONG Wei-quan.Discussion on long-term consistency in volume of masonry mortar of site identification method[J].Quality of Civil Engineering and Construction,2001(10):41-42.(in Chinese)
[11]洪峰,王绍博.砌体结构抗震抗剪强度分析[J].地震工程与工程振动,2004,20(3):28-33. HONG Feng,WANG Shao-bo.Analysis of earthquake shear strength of masonry structures[J].Harbin:Earthquake Engineering and Engineering Vibration,2004,20(3):28-33.(in Chinese)
[12]陈贡联.混凝土多孔砖砌体结构静、动力性能研究[D].上海:同济大学,2010. CHEN Gong-lian.Study on static and dynamic mechanical behavior of concrete perforated brick masonry structures[D]. Shanghai:Tongji University,2010.(in Chinese)
[13]苗吉军.地震作用下砌体结构倒塌反应的计算机仿真分析[D].上海:同济大学,2003. MIAO Ji-jun.Computer simulation analysis of collapse response for masonry structures under earthquake[D].Shanghai: Tongji University,2003.(in Chinese)
[14]王卓琳.基于离散单元法的混凝土细观力学模型及其应用[D].上海:同济大学,2009. WANG Zhuo-lin.Study and application of mesoscopic mechanical model of concrete based on the discrete element method[D].Shanghai:Tongji University,2009.(in Chinese)
[15]朱伯龙.砌体结构设计原理[M].上海:同济大学出版社, 1991:17-18. ZHU Bo-long.Masonry structure design principle[M].Shanghai: Tongji University Press,1991:17-18.(in Chinese)
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