砌体局部受压承载力计算的改进  

Improvement on load-carrying capacity of masonry under local compression

作　　者：杨卫忠[1] 刘伟[1] 

机构地区：[1]郑州大学土木工程学院

出　　处：《四川建筑科学研究》2005年第4期19-21,共3页Sichuan Building Science

基　　金：郑州大学青年骨干教师基金

摘　　要：分析了现行《砌体结构设计规范》GB50003关于砌体局部受压承载力计算存在的一些不足,如局部抗压强度提高系数的模式存在理论上的缺陷,梁端有效支承长度未考虑墙体内压应力的影响,梁端底面压应力图形的完整系数的取值偏于保守等,提出了相应的改进方法,能较好地解释局部受压的特点,并具有计算简单、概念清楚、计算结果与试验结果吻合较好等优点。In this paper, the shortcomings of the formula about the calculation of load carrying capacity of masonry beneath beam-end in Chinese code （GB50003） is pointed out, for instance, the mode of increased coeffcient of compressive strength of masonry over local bearing area; the effective bearing length of beam-end does not take account of the influence of compression existing in the wall;thecoefficient to covert the stress of masonry to the strength is very reserved. The corresponding improvement formula is put forward. The formula can explain the reason of masonry under local compression. It has many merits such as clear concept, simple calculation etc. The results of calculation have a good agreement with the experiments.

关 键 词：砌体结构 局部受压 承载力 计算方法 

分 类 号：TU364[建筑科学—结构工程]