一、问题的提出砖石砌体的各种强度指标是计算砖石结构构件承载能力的基本数据。我国在编制“砖石结构设计规范(GBJ-3-73)”时,对于砖石结构砌体的主要受力状态,如砌体抗压强度R等进行了系统试验,并确定了标准试件。但对沿阶梯形截面的抗剪强度则没有进行试验,而是参照文献[4]和沿通缝截面的抗剪强度试验结果确定的。 First, the issue of the various masonry masonry strength indicators are the basic data to calculate the bearing capacity of masonry structural components. In compiling the “Code for Masonry Structural Design (GBJ-3-73)”, China systematically tested the main stress conditions of masonry masonry, such as masonry compressive strength R, and determined the standard. Specimen. However, the shear strength along the stepped section was not tested, but was determined by reference to the results of the shear strength test in [4] and the section of the cross section.