蒸壓粉煤灰實心磚砌體偏心受壓承載力試驗研究*
徐春一1, 2,劉明2,張延年2
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(1 大連理工大學(xué)土木水利學(xué)院, 大連 116023； 2 沈陽建筑大學(xué)土木工程學(xué)院, 沈陽 110168)［摘要］為研究偏心距e對蒸壓粉煤灰實心磚砌體承載力性能的影響，以e為主要參數(shù)，對24個蒸壓粉煤灰實心磚砌體試件及4個普通粘土磚砌體試件進(jìn)行偏心受壓試驗。試驗結(jié)果表明，砌體的偏心受壓承載力隨e值的增加線性降低，偏心影響系數(shù)φ的試驗值略低于規(guī)范計算值。建議蒸壓粉煤灰實心磚單向偏心受壓構(gòu)件的偏心距限值取0.6y，并通過試驗回歸對規(guī)范中φ的計算式進(jìn)行了調(diào)整，其計算結(jié)果與試驗結(jié)果相近。［關(guān)鍵詞］砌體；蒸壓粉煤灰實心磚；承載力；偏心影響系數(shù)Experimental study on the capacity for autoclaved fly ash solid brick masonry subjected to eccentric loadXu Chunyi1，2, Liu Ming2, Zhang Yannian2(1 Dalian University of Technology, Dalian 116023, China; 2 Shenyang Jianzhu University, Shenyang 110168, China)Abstract:The influence of eccentricity on the capacity of autoclaved fly ash solid brick is studied. Eccentricity is the main parameter. Eccentric compression tests were proceeded on 24 autoclaved fly ash solid brick masonry samples and 4 common clay brick masonry samples. Its damage pattern was analyzed. The experiment indicates that eccentric compression capacity according to a certain proportion decrease as e/y increase; eccentric effect factor is slightly lower than code values. It is suggested that the limit value of eccentricity of autoclaved fly ash solid brick under unidirectional eccentric compression adopts e=0.6y. And the formula of eccentric effect factor in code is adjusted. The proposed formula of the eccentric compression bearing capacity of autoclaved fly ash solid brick masonry is given.Keywords:masonry; autoclaved fly ash solid brick; capacity; eccentric effect factor*國家十一五科技支撐計劃項目(2006BAJ03A01)。作者簡介：徐春一，博士研究生，Email：xuchunyiyi@163.com。參考文獻(xiàn)［1］GB50003—2001砌體結(jié)構(gòu)設(shè)計規(guī)范［S］.北京:中國建筑工業(yè)出版社,2001.［2］肖建莊,王幸,胡永忠，等.再生混凝土空心砌塊砌體受壓性能［J］.結(jié)構(gòu)工程師,2006,22(3):68-71.［3］翟希梅,于芳.配筋砌塊墻體平面外偏心受壓承載能力的分析［J］.建筑砌塊與砌塊建筑,2006(2).［4］BRYAN D E, MERVYN J K. Compressive behavior of unconfined and confined clay brick masonry［Ｊ］. Journal of Structural Engineering, 2004,130:650661.［5］GBJ129—90砌體基本力學(xué)性能試驗方法標(biāo)準(zhǔn)［S］.北京:中國建筑工業(yè)出版社,1994.［6］施楚賢.砌體結(jié)構(gòu)理論與設(shè)計(第二版)［M］.北京:中國建筑工業(yè)出版社,2003.［7］劉桂秋,施楚賢.砌體雙向偏心受壓構(gòu)件承載力的設(shè)計方法［J］.建筑結(jié)構(gòu) 2003，33(3).［8］唐岱新.砌體結(jié)構(gòu)［M］.北京:高等教育出版社,2003.
