wake island• 590 •武汉理工大学学报(交通科学与工程版)2020年第44卷
eur
Rearchon Three-dimensional Finite Element
Model of Asphalt Pavement Structure
syntheticCHEN Xiaohui LI Hao
CGuangdong Jiaoke Testing Co. Ltd .,Guangzhou 510420,China)
Abstract :In order to obtain a three-dimensional finite element model with high accuracy, badon the typical mi-rigid ba asphalt pavement structure of Yun-Luoexpressway ? the load was simplified to square load?and the three dimensional finite element model dimensions? boundary conditions and mesh dimensions were studied . The results show that, in order to meet the precision requirements ,the size of soil foundation XXYXZ in three directions shall be at least 6 mX 7. 5 mX 16 m. When calculating the stress and strain indexes, the size of road surface XXZ should be at least 6 mX 7・ 5 m and 10 mX 12 m respectively. The mesh size of the load acting area can meet the calculation accuracy within 50 mm, the outer mesh size of the load acting area can be thinned, and the proportion of the density element size should not exceed 3! 1.月饼的英文
harvester>heal the wordKey words : road engineering ; asphalt pavement ; finite element model ; three-dimensional dimension ;
网上冲浪 英文boundary conditions ; mesh size
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