Beben Damian, Ukleja Janusz, Maleska Tomasz, Anigacz Wojciech
Faculty of Civil Engineering and Architecture, Opole University of Technology, 45-758 Opole, Poland.
Materials (Basel). 2020 Apr 14;13(8):1846. doi: 10.3390/ma13081846.
This article presents an analysis of the load-carrying capacity of a historic masonry arch viaduct. The vault was made of bricks and lime-cement mortar. It was built in 1886 and, therefore, its historical character had to be included in the restoration project. The main task of the restoration was to bring the viaduct to a technical condition corresponding to the current requirements to allow normal (or limited) service. The strength of the brickwork and joints (mortar) was examined experimentally in the laboratory and on the viaduct. This paper presents numerical calculations for the masonry viaduct that were performed using two programs based on the finite element method. As the project documentation was unknown, two- and three-hinged models of the masonry arch were analyzed. The axial forces, shear forces, bending moments, displacement, normal stresses, and shear stresses generated from the numerical analysis have been discussed. The conditions of the load capacity of the arch viaduct due to compression and shearing have been met. The safety of a masonry arch of the viaduct was determined. Finally, the restoration scope of the masonry viaduct was proposed.
本文对一座历史悠久的砖石拱桥高架桥的承载能力进行了分析。拱顶由砖块和石灰水泥砂浆制成。它建于1886年，因此，其历史特征必须纳入修复项目中。修复的主要任务是使高架桥达到符合当前要求的技术状态，以允许正常（或有限）使用。在实验室和高架桥上对砖砌体和接缝（砂浆）的强度进行了实验检测。本文介绍了使用基于有限元法的两个程序对砖石高架桥进行的数值计算。由于项目文档未知，对砖石拱的两铰和三铰模型进行了分析。讨论了数值分析产生的轴向力、剪力、弯矩、位移、正应力和剪应力。满足了拱高架桥因压缩和剪切而产生的承载能力条件。确定了高架桥砖石拱的安全性。最后，提出了砖石高架桥的修复范围。
