梁端砌体局部受压承载力计算  

Evaluation of Local Compressive Carrying Capacity of Masonry beneath Beam-end

作　　者：杨卫忠[1] 

机构地区：[1]同济大学,上海200092

出　　处：《结构工程师》2004年第4期42-47,共6页Structural Engineers

摘　　要：在分析砌体结构设计规范 (GB5 0 0 0 3)关于砌体局部受压承载力计算公式的基础上 ,指出计算公式存在的不足 ,提出考虑砌体偏心受压特点的应力 -应变关系 ,并利用平截面假定和平衡关系 ,导出梁端底面压应力图形的完整系数 ,并建立了梁端砌体局部受压承载力计算公式 ,该式具有计算简单、概念清楚、适用范围广等优点 ,计算结果与试验结果吻合较好 ,且优于现行规范公式。In this paper,based on the analysis of the formula about the calculation of local compressive carrying capacity of masonry beneath beam-end,the shortcomings in the formula are put out. The expression of stress-strain curve of masonry under eccentric compression is proposed. By using of the assumption of plane section and equilibrium of forces,the coefficient to covert the stress of masonry to the strength and the position of resultant force are deduced,the formula of local compressive carrying capacity of masonry beneath beam-end is also deduced. The formula can take account of the influences of compression existing in the masonry. It has many merits such as clear concept,simple calculation and wide application .The results of calculation have good agreement with the experiments.

关 键 词：局部受压 砌体结构 承载力计算 平截面假定 应力一应变关系 偏心受压 设计规范 试验结果 压应力 计算公式 

分 类 号：TU364[建筑科学—结构工程] TU375