Three dimensional mesoscopic concrete modeling technology based on OpenMP and laser scanning
XIE Hao1,2, SUN Xiaotong3, HUANG Yongliang1,2, WANG Xiaohui1, HU Shuang1
1. Jinan Rail Transit Group Co., Ltd., Jinan 250014, Shandong, China;
2. School of Qilu Transportation, Shandong University, Jinan 250002, Shandong, China;
3. School of Mechanics and Civil Engineering, China University of Mining and Technology·Beijing, Beijing 100083, China
Abstract: In order to build a refined three dimensional mesoscopic concrete model, a lattice-based aggregate placement algorithm was proposed, which was universal to polyhedral aggregates composed of patches, and after parallel optimization through OpenMP, the aggregate placement efficiency was improved about 50%. The basic idea of the algorithm was to discretize the continuous model domain through a series of ordered lattices, traverse the set of points surrounded by the aggregate to be cast, and judge whether the aggregate was put successfully through the status indicators of these points,which effectively avoided the complicated geometric calculations when judging the intrusion between aggregates. Combined this algorithm with laser scanning technology, the constructed three-dimensional numerical model of concrete could faithfully reflect the characteristics of its internal aggregate form, gradation, and spatial distribution, and the aggregate volume content of the model was as high as 60%, which fully met the requirement of concrete in numerical research.
谢浩, 孙晓彤, 黄永亮, 王晓晖, 胡爽. 基于OpenMP和激光扫描的三维细观混凝土建模技术[J]. 隧道与地下工程灾害防治, 2022, 4(1): 95-102.
XIE Hao, SUN Xiaotong, HUANG Yongliang, WANG Xiaohui, HU Shuang. Three dimensional mesoscopic concrete modeling technology based on OpenMP and laser scanning. Hazard Control in Tunnelling and Underground Engineering, 2022, 4(1): 95-102.
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2022, Vol. 4 
