砂浆厚度对页岩多孔砖砌体抗压强度影响试验研究
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摘要
采用扁顶法对20片180mm厚的页岩多孔砖砌体墙进行了现场原位试验。通过分析试验结果得到不同砂浆水平灰缝厚度下砌体在分级荷载作用下的破坏模式,应变变化曲线以及初裂荷载、破坏荷载随砂浆厚度的变化曲线。由曲线可分析获得砂浆厚度对砌体抗压强度的影响。依据规范对现场测试的压力进行换算可得扁顶法试验得到的砌体抗压强度,同时利用回弹法推定获得砌体抗压强度参考值,并对采用这两种方法获得的结果与墙体的设计抗压强度进行对比分析,可证实砂浆水平灰缝厚度对页岩多孔砖砌体抗压强度的影响。
In-situ tests were carried out on 20 specimens of 180 mm thick shale porous brick masonry walls by flat jack method. By analyzing the test results, the failure modes, strain curves, initial crack loads and failure loads of masonry under graded loads with different thickness of mortar horizontal mortar cracks were obtained. The influence of mortar thickness on the compressive strength of masonry was obtained from the curve. The compressive strength of masonry obtained by the flat jack test was obtained by converting the pressure measured by the code. At the same time, the reference value of the compressive strength of masonry was deduced by rebound method. The results obtained by these two methods were compared with the design compressive strength of the wall. The effect of the thickness of horizontal mortar crack on the compressive strength of shale porous brick masonry was confirmed.
In-situ tests were carried out on 20 specimens of 180 mm thick shale porous brick masonry walls by flat jack method. By analyzing the test results, the failure modes, strain curves, initial crack loads and failure loads of masonry under graded loads with different thickness of mortar horizontal mortar cracks were obtained. The influence of mortar thickness on the compressive strength of masonry was obtained from the curve. The compressive strength of masonry obtained by the flat jack test was obtained by converting the pressure measured by the code. At the same time, the reference value of the compressive strength of masonry was deduced by rebound method. The results obtained by these two methods were compared with the design compressive strength of the wall. The effect of the thickness of horizontal mortar crack on the compressive strength of shale porous brick masonry was confirmed.
引文
[1] 施楚贤. 砌体结构理论与设计[M]. 3版.北京:中国建筑工业出版社,2014:42-48.
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[3] 砌体工程现场检测技术标准:GB/T 50315—2011[S]. 北京:中国建筑工业出版社,2011.
[4] 易伟健,张望喜. 建筑结构试验[M]. 北京:中国建筑工业出版社,2005:56-59.
[5] 施楚贤. 采用扁式液压顶试验方法确定砖墙中砌体抗压强度[J]. 建筑结构学报,1990,11(4):37-45.
[6] 黄榜彪,赖骏,朱基珍,等. 矩形孔烧结页岩砖砌体抗压强度及弹性模量研究[J]. 广西大学学报(自然科学版),2015,40(1):43-49.
[7] 秦士洪,皮天祥,骆万康. 烧结页岩煤矸石多孔砖砌体抗压强度试验研究[J]. 建筑结构,2005,35(9):3-6.
[8] 刘桂秋. 砌体结构基本受力性能的研究[D]. 长沙:湖南大学,2005.
[9] 孙训方,方孝淑,关来泰. 材料力学[M]. 北京:高等教育出版社,2009.
[10] 陈大川,陈庭柱,施楚贤. 回弹法推定砌体中烧结多孔砖抗压强度研究[J]. 建筑结构,2012,42(9):134-136.
[11] 砌体结构设计规范:GB 50003—2011[S]. 北京:中国建筑工业出版社,2011.
[12] 砌墙砖试验方法:GB/T 2542—2012[S]. 北京:中国标准出版社,2013.
[13] 建筑砂浆基本性能试验方法标准:JGJ/T 70—2009[S]. 北京:中国建筑工业出版社,2009.
[14] 砌体结构工程施工质量验收规范:GB 50203—2011[S]. 北京:中国建筑工业出版社,2011.
[15] 潘佳禾,马宏旺,吴丹. 砂浆对砌体强度和变形能力的影响分析[J]. 新型建筑材料,2014,41(10):38-42.
[2] 施楚贤. 砂浆水平灰缝厚度对砖砌体抗压强度的影响[J]. 建筑技术,1981(12):52-54.
[3] 砌体工程现场检测技术标准:GB/T 50315—2011[S]. 北京:中国建筑工业出版社,2011.
[4] 易伟健,张望喜. 建筑结构试验[M]. 北京:中国建筑工业出版社,2005:56-59.
[5] 施楚贤. 采用扁式液压顶试验方法确定砖墙中砌体抗压强度[J]. 建筑结构学报,1990,11(4):37-45.
[6] 黄榜彪,赖骏,朱基珍,等. 矩形孔烧结页岩砖砌体抗压强度及弹性模量研究[J]. 广西大学学报(自然科学版),2015,40(1):43-49.
[7] 秦士洪,皮天祥,骆万康. 烧结页岩煤矸石多孔砖砌体抗压强度试验研究[J]. 建筑结构,2005,35(9):3-6.
[8] 刘桂秋. 砌体结构基本受力性能的研究[D]. 长沙:湖南大学,2005.
[9] 孙训方,方孝淑,关来泰. 材料力学[M]. 北京:高等教育出版社,2009.
[10] 陈大川,陈庭柱,施楚贤. 回弹法推定砌体中烧结多孔砖抗压强度研究[J]. 建筑结构,2012,42(9):134-136.
[11] 砌体结构设计规范:GB 50003—2011[S]. 北京:中国建筑工业出版社,2011.
[12] 砌墙砖试验方法:GB/T 2542—2012[S]. 北京:中国标准出版社,2013.
[13] 建筑砂浆基本性能试验方法标准:JGJ/T 70—2009[S]. 北京:中国建筑工业出版社,2009.
[14] 砌体结构工程施工质量验收规范:GB 50203—2011[S]. 北京:中国建筑工业出版社,2011.
[15] 潘佳禾,马宏旺,吴丹. 砂浆对砌体强度和变形能力的影响分析[J]. 新型建筑材料,2014,41(10):38-42.