垫梁下砌体局部受压承载力计算  

Calculation formula of bearing capacity of local compression for masonry under pad-stone

作　　者：杨春侠[1] 孙丽娟[1] 杨伟军[1] 

机构地区：[1]长沙理工大学土木与建筑学院,湖南长沙410004

出　　处：《长沙理工大学学报（自然科学版）》2009年第4期27-32,共6页Journal of Changsha University of Science and Technology:Natural Science

基　　金：湖南省教育厅科研资助项目(05hnjy038)

摘　　要：考虑垫梁下砌体局部受压时,砌体设计规范仅给出了垫梁长度大于πh0的具体计算公式,但对于垫梁长度不大于πh0的情况没有分析研究.因此,结合弹性力学理论和弹性地基梁计算方法,对不同长度的垫梁进行应力分析,得到不同长度的垫梁的不同折算高度,最终得到不同的承载力计算公式.所得结论不仅验证了砌体设计规范中垫梁长度大于πh0的计算公式,也给出了垫梁长度不大于πh0的计算公式,弥补了规范的不足,为砌体结构设计提供了参考依据.The calculation formula of bearing capacity of local compression for masonry under pad-stone length larger than πho was given in the design code of masonry structures only, but with no counting formula if the pad-stone length is not larger than πho, when the local compression for masonry under pad-stone are taken into consideration . Therefore, this paper associates with elasticity theory and the calculation method of beam on elastic foundation to analyse the stress of the different length of pad-stone, then the different effective hight of pad-stone according to the different length of pad-stone are found, and ultimately obtain the different formulas for calculating the bearing capacity. The conclusions not only validate the calculation formula for pad-stone length larger than πho in the design code of masonry structures, but also give the calculation formula for pad-stone length not larger than πho ,which substantiate the code, and provide the necessary basis for masonry structure design.

关 键 词：垫梁 局部受压 折算高度 承载力 

分 类 号：TU312[建筑科学—结构工程]