Experimental and numerical characterization of the interface between concrete masonry block and mortar

Abstract Masonry is a construction system that has been used since the beginning of civilization and is still used throughout the world. The finite element method is a recent development that allows complex problems, including structural masonry problems, to be solved. A vast amount of literature exists on finite element modeling, using software such as ABAQUS, to represent experimental masonry models. Based on this established pattern, an experimental and analytical research program was designed and implemented. Thus, a set of tests was conducted to determine the compressive and tensile strengths of the masonry components, i.e., block, mortar, and grout. Bond wrench tests, diagonal tension tests, and horizontal joint shear tests were conducted to characterize the interface between the blocks and the mortar. A finite element model was then developed to represent the physical models and the general conclusion is that the finite element model was able to represent reasonably well the physical models.

【摘要】 砌体（Masonry）是自人类文明起源之初便得到应用、至今仍在全球范围内广泛使用的建造体系。有限元法（Finite Element Method）作为近年发展起来的数值分析方法，可用于求解包括结构砌体问题在内的各类复杂工程问题。目前已有大量关于有限元建模的研究文献，研究者常借助ABAQUS等软件构建试验砌体模型的数值复现模型。基于这一成熟的研究范式，本研究设计并实施了一套试验与分析相结合的研究方案。为此，本研究开展了一系列试验以测定砌体构件（即砌块、砂浆及灌浆料）的抗压与抗拉强度；同时开展了粘结剪力试验（Bond wrench test）、对角拉伸试验及水平缝抗剪试验，以表征块材与砂浆之间的界面力学性能。随后构建了用于复现试验实体模型的有限元模型，最终得到的一般性结论为：该有限元模型可较为准确地复现试验实体模型。