摘要
为了研究不同块型非烧结多孔砖砌体的抗压强度,通过试验研究,对Tasuji-Slate-Nilson破坏准则进行修正后,结合ANSYS有限元分析,得到了分析各种块型砌体抗压强度的理论模型。用该模型对各种块型砖砌体分析结果表明,块体原材料、几何尺寸和孔洞率对砌体抗压强度有明显的影响。在普通砖砌体抗压强度计算公式基础上,引入块型影响系数,得到了各种块型非烧结多孔砖砌体抗压强度计算公式。通过与493个蒸压灰砂多孔砖砌体、144个混凝土多孔砖砌体及30个蒸压粉煤灰多孔砖砌体抗压试验结果对比表明,计算公式的计算精度良好。
In order to study the masonry compressive strength of different types of non-burnt perforated bricks, the Tasuji- Slate-Nilson failure criterion is modified based on experimental results and the model to speculate on the compressive strength of perforated brick masonry is carried out by ANSYS. Using the model, the influence of raw material, brick size and void ratio of brick to compressive strength of masonry is obvious. By introducing the influence coefficients of brick types, the compressive strength formula of non-burnt perforated brickworks can be obtained based on common brick masonry compressive strength formula. The computed results according to this formula conform accurately with the compressive experiment results of 493 autoclaved lime-sand perforated brickworks, 144 concrete perforated brickworks and 30 autoclaved fly ash perforated brickworks.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2008年第6期120-125,共6页
Journal of Building Structures
基金
建设部建标[2007]125号
关键词
混凝土砖
蒸压粉煤灰砖
蒸压灰砂砖
多孔砖
强度理论
抗压强度
concrete brick
autoclaved fly ash brick
autoclaved lime-sand brick
perforated brick
strength theory
compressive strength
