（重庆大学土木工程学院  400045）
【提要】  为了解烧结页岩多孔砖砌体的均匀局部受压性能，进行了四种局部受压形式的试验研究，统计分析了42个试件的试验结果，提出了局部受压强度提高系数的建议公式并与现行规范进行了对比。结果表明，由于多孔砖孔洞构造特点明显影响了非局部受压砌体“围箍作用”的发挥和局部压力的扩散，因而砌体局部受压承载力低于实心砖砌体且破坏具有明显的脆性特征。
【关键词】  烧结页岩多孔砖  均匀局部受压  局压机理  强度提高系数  回归公式
Experimental Study on Local Uniform Compression of Burned Shale Perforated Bricks Masonry/Qin Shihong,Liu Xiaoqin,Luo Wankang(College of Civil Engineering, Chongqing University, Chongqing 400045,China)
Abstract:Through the test research on the behavior of burned shale perforated brick masonry under four kinds of local uniform pressure， statistically the test data of 42 specimens are analyzed and the formula about added coefficient of strength in comparison with the corresponding expression in national masonry code is proposed. The results indicate that the characteristic of the perforated brick masonry has evident influence on the exertion of the constraint effect of confined masonry and the spread of compressive stress，and the bearing capacity of local compression is lower than that of the solid brick masonry and has a evident brittleness character.
Keywords:burned shale perforated brick；local uniform compression；local compression mechanism；added coefficient of strength；regression formula