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为研究偏心率e/y对蒸压粉煤灰多孔砖砌体承载力性能的影响。以e/y为主要参数,对24个蒸压粉煤灰多孔砖砌体试件及4个普通黏土砖砌体试件进行偏心受压试验,分析其受压破坏形态。通过试验研究表明砌体的偏心受压承载力随e/y值的增加而呈线性降低。偏心影响系数φ试验值略低于规范中规定值。对规范中φ公式进行调整,给出蒸压粉煤灰多孔砖无筋砌体矩形截面单向偏心受压构件承载力的建议计算公式,并建议蒸压粉煤灰多孔砖单向偏心受压构件的偏心距限值为0.6y。
In order to study the influence of eccentricity e / y on the bearing capacity of autoclaved fly ash perforated brick masonry. Taking e / y as the main parameter, 24 autoclaved fly ash perforated brick masonry specimens and 4 ordinary clay brick masonry specimens were subjected to eccentric compression test and their compression failure modes were analyzed. Experimental studies have shown that the eccentric compression bearing capacity of masonry linearly decreases with the increase of e / y value. Eccentric influence coefficient φ test value slightly lower than the standard value. The formula of formula φ is adjusted, and the formula for calculating the bearing capacity of uniaxial eccentric compression member with rectangular section of autoclaved fly ash perforated brick is given, and the uniaxial eccentric compression of autoclaved fly ash perforated brick is suggested The eccentricity limit of the component is 0.6y.