免蒸压免烧结粉煤灰多孔砖砌体力学性能试验研究
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摘要
免蒸压免烧结粉煤灰多孔砖是一种新型承重墙体材料,为使其在地震区村镇建筑中得到推广应用,进行了多孔砖砌体抗压强度和抗剪强度试验,分析了砌体裂缝开展及破坏过程。试验结果表明:免蒸压免烧结粉煤灰多孔砖砌体的受压、受剪破坏过程及特征与普通黏土砖砌体类似,但具有更大的脆性;抗压、抗剪强度均小于普通黏土砖砌体;采用6次多项式的受压本构关系数学模型,反映了免蒸压免烧结粉煤灰多孔砖砌体受压应力-应变全过程,计算值与实测数据比较接近。
Non-autoclaved and non-sintered fly-ash perforated brick is a kind of new material for load-bearing walls.In order to promote the application of this new material in village and town buildings of seismic area,compression and shear strength of non-autoclaved and non-sintered fly-ash perforated brick masonry was tested and crack and failure progress was analyzed.The test results show that the failure processes and characteristics of the non-autoclaved and non-sintered fly-ash perforated brick masonry in compression and in shear are similar to that of the common brick masonry,however the non-autoclaved and non-sintered fly-ash perforated brick masonry tends to fail in brittle manner.The compression and shear strength are all less than that of the common brick masonry.A mathematic model of 6-degree polynomial was used to express the compressive constitutive relationship and the whole process of non-autoclaved and non-sintered fly-ash perforated brick masonry in compression was described.The curve was close to the measured data.
Non-autoclaved and non-sintered fly-ash perforated brick is a kind of new material for load-bearing walls.In order to promote the application of this new material in village and town buildings of seismic area,compression and shear strength of non-autoclaved and non-sintered fly-ash perforated brick masonry was tested and crack and failure progress was analyzed.The test results show that the failure processes and characteristics of the non-autoclaved and non-sintered fly-ash perforated brick masonry in compression and in shear are similar to that of the common brick masonry,however the non-autoclaved and non-sintered fly-ash perforated brick masonry tends to fail in brittle manner.The compression and shear strength are all less than that of the common brick masonry.A mathematic model of 6-degree polynomial was used to express the compressive constitutive relationship and the whole process of non-autoclaved and non-sintered fly-ash perforated brick masonry in compression was described.The curve was close to the measured data.
引文
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[2]郝彤,刘立新,王仁义.带构造柱混凝土多孔砖墙体的抗震性能试验研究[J].世界地震工程,2008,24(1):93-98.HAO Tong,LIU Lixin,WANG Renyi.Experimental studies on seismic behavior of concrete perforated brick walls with constructional columns[J].World Earthquake Engineering,2008,24(1):93-98.(in Chinese)
[3]顾祥林,陈贡联,马俊元,等.反复荷载作用下混凝土多孔砖墙体受力性能试验研究[J].建筑结构学报,2010,31(12):123-131.GU Xianglin,CHEN Gonglian,MA Junyuan,et al.Experimental study on mechanical behavior of concrete perforated brick walls under cyclic load-ing[J].Journal of Building Structures,2010,31(12):123-131.(in Chinese)
[4]肖建庄,王长青,朱彬荣,等.再生混凝土砌块砌体房屋结构振动台模型试验研究[J].四川大学学报:工程科学版,2010,42(5):120-126.XIAO Jianzhuang,WANG Changqing,ZHU Binrong,et al.Shake table test on recycled concrete block masonry buildings[J].Journal of SichuanUniversity:Engineering Science Edition,2010,42(5):120-126.(in Chinese)
[5]Ishtiyaq Gull.Testing of strength of recycled waste concrete and its applicability[J].Journal of Materials in Civil Engineering,2011,137(1):1-5.
[6]王正刚,薛国亚,高本立,等.约束页岩砖砌体墙抗震性能试验研究[J].东南大学学报:自然科学版,2003,33(5):638-642.WANG Zhenggang,XUE Guoya,GAO Benli,et al.Experimental research on the seismic behaviorof confined shale brick masonry walls[J].Journalof Southeast University:Natural Science Edition,2003,33(5):638-642.(in Chinese)
[7]秦士洪,倪校军,曹桓铭,等.蒸压粉煤灰砖砌体应力-应变全曲线研究[J].建筑结构学报,2010,31(8):94-100.QIN Shihong,NI Xiaojun,CAO Hengming,et al.Research on stress-strain full curves of autoclaved fly ash brick masonry[J].Journal of BuildingStructures,2010,31(8):94-100.(in Chinese)
[8]Kaushik H B,Rai R C,Jain S K.Stress-strain characteristics of clay brick masonry under uniaxial compression[J].Journal of Materials in Civil En-gineering,2007,19(9):728-739.
[9]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 Gonglian.Study on static and dynamic properties of concrete perforated brick masonry structures[D].Shanghai:Tongji University,2010.(in Chinese)
[10]GB50003-2001砌体结构设计规范[S].北京:中国建筑工业出版社,2002.GB50003-2001 Code for Design of masonry Structures[S].Beijing:China Architecture and Building Press,2002.(in Chinese)
[11]施楚贤.砌体结构理论与设计[M].2版.北京:中国建筑工业出版社,2003.SHI Chuxian.The theory and design of masonry structure[M].2nd ed.Beijing:China Architecture and Building Press,2003.(in Chinese)
[12]朱伯龙.砌体结构设计原理[M].上海:同济大学出版社,1991.ZHU Bolong.The design principle of masonry structure[M].Shanghai:Tongji University Press,1991.(in Chinese)
[13]庄一舟,黄承逵.模型砖砌体力学性能的试验研究[J].建筑结构,1997(2):22-25.ZHUANG Yizhou,HUANG Chengkui.Experimental study on mechanical properties of model masonry[J].Building Structures,1997(2):22-25.(in Chinese)
[14]吕伟荣,施楚贤.普通砖砌体受压本构模型[J].建筑结构,2006,36(11):77-78.LU Weirong,SHI Chuxian.Constitutive relationship of brick masonry[J].Building Structures,2006,36(11):77-78.(in Chinese)
[15]Madan A,Reinhorn A M,Mander J B,et al.Modeling of masonry infill panels for structural analysis[J].Journal of Structural Engineering,1997,123(10):1295-1302.
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