蒸压灰砂砖砌体弯曲抗拉强度试验研究  

Study on autoclaved sand-lime brick masonry by bending tensile strength test

作　　者：张中脊[1] 杨伟军[1] 

机构地区：[1]长沙理工大学,湖南长沙410004

出　　处：《新型建筑材料》2009年第5期43-47,共5页New Building Materials

摘　　要：通过对5组蒸压灰砂砖砌体分别进行沿砌体通缝截面和沿齿缝截面的弯曲抗拉强度试验,发现其试验平均值与按规范GB 50003—2001中公式的计算值存在明显差别:沿砌体通缝截面的弯曲抗拉试验平均值明显低于按规范公式计算值,沿砌体齿缝截面的弯曲抗拉试验平均值明显高于按规范公式计算值,通过对试验数据进行回归统计分析,推出蒸压灰砂砖砌体弯曲抗拉强度计算公式,沿通缝f:tm,m=0.07f2^(1/2),沿齿缝ft:m,m=0.25f2^(1/2),为编制湖南省工程建设地方标准《蒸压灰砂砖建筑技术规程》提供了依据。There is an obvious difference between experiment averages and average values calculated according to norms by bending tensile strength tests on five groups of autoclaved lime-sand brick masonry separately along the masonry joints pass section and along the teeth section：the average value of bending tensile strength tests along the masonry joints pass section was significantly lower than calculated value in accordance with norms and the average value of bending tensile strength tests along teeth section was significantly higher than the calculated value in accordance with norms,formula for calculating the bending tensile strength of autoclaved lime-sand brick masonry is derived from the test data through statistical analysis of regression, i.e. along the masonry joint pass ftm,m=0.07√f2, along the teeth joint ftm,m=0.25 √f2 ,that provide the basis for compilation Hunan province engineering construction local standard ＂Technical Specification for Autoclaved Sand-lime Brick Masonry Building＂.

关 键 词：蒸压灰砂砖 弯曲抗拉试验 试验平均值 规范公式计算值 

分 类 号：TU522.19[建筑科学—建筑技术科学]