Qianqing Wang, Katrin Beyer
i PhD candidate, EESD, EPFL, Lausanne, Switzerland, qianqing.wang@epfl.ch
ii Associate Professor, EESD, EPFL, Lausanne, Switzerland, katrin.beyer@epfl.ch
ABSTRACT
Microscale modeling of rubble stone masonry structures is hindered by the lack of geometric data on the microstructure, including units’ shapes and arrangement in 3D. This paper introduces an automated method for generating synthetic 3D models of rubble stone masonry walls using photos of real walls. The process involves identifying geometric parameters from 2D stone shapes in the segmented wall photos, and generating 3D stones with these parameters based on spherical harmonics. A geometric planning algorithm, mimicking the construction process of masons, is then used to assemble the generated stones, creating multi-leaf masonry walls. We use the method for a case study, where a wall of size 1600 mm × 1600 mm × 400 mm is created from the photo of the façade of a real wall. The generated wall is compared to the real wall using indices that quantify the geometric features of units, including size, aspect ratio and sphericity. The arrangement of stones is also compared in terms of vertical interlocking and course horizontality, demonstrating similarity between the synthetic and real structures.
KEYWORDS: Rubble stone masonry, microstructure, spherical harmonics, typology generator.
089-Wang.pdf
