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本文根据砖砌体的弹塑性特点,对随偏心距变化的极限状态下的截面应力图形进行了研究,由截面的塑性深度得出截面弯曲塑性系数。再从砖砌柱的弹性强度相关公式的概念中引出柱弯曲塑性系数,对砖砌柱的试验数据进行分析,得出砖砌柱的弯曲塑性系数值。最后将柱的弯曲弹性系数与塑性系数合并,称为柱的弯曲塑性系数,可使计算公式及计算程序简化。本文物理力学概念清楚,容易理解掌握,对设计和教学均有帮助。
According to the elasto-plastic characteristics of brick masonry, this paper studies the cross-sectional stress pattern under the limit state with varying eccentricity. The plasticity depth of the cross section is used to obtain the section bending plasticity coefficient. Then the column bending plasticity coefficient is derived from the concept of the related formula of the elastic strength of brick columns, and the test data of the brick columns are analyzed to obtain the value of the bending plasticity coefficient of the brick columns. Finally, the bending elastic coefficient and the plasticity coefficient of the column are combined and called the bending plasticity coefficient of the column, which can simplify the calculation formula and the calculation procedure. The concept of physics and mechanics in this article is clear and easy to understand and master. It helps both design and teaching.