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Numerical and Experimental Studies for Multi-Cracks of Asphalt Pavement with Semi-Rigid Basement Asphalt

Author: ZhangCheng
Tutor: MiaoYu
School: Huazhong University of Science and Technology
Course: Geotechnical Engineering
Keywords: Asphalt Pavement Multiple cracks Viscoelastic Finite Element Method Stress intensity factor Temperature stress Dynamic Response Extended Analysis
CLC: U416.217
Type: Master's thesis
Year: 2010
Downloads: 30
Quote: 0
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Semi- rigid asphalt pavement cracking problem has become a problem that can not be ignored in the highway construction , semi- rigid asphalt pavement with multiple cracks , explore the characteristic temperature loads and traffic loads has important theoretical and practical significance. This paper studies the mechanical behavior of asphalt pavement with multiple cracks and crack propagation , the main contents are as follows : 1, an overview of the level of research and development in related fields at home and abroad , using the generalized Maxwell model to simulate the viscoelastic properties of the asphalt mixture . 2 , the effect of temperature changes in the response of asphalt pavement containing multiple cracks finite element simulation analysis . First, based on the theory of heat transfer of road temperature field calculation and analysis, Second, this temperature field pavement temperature stress load analysis . The multiple crack spacing changes of temperature stress and the crack tip stress intensity factor . 3 , binding kinetics and fracture mechanics theory , modal analysis and transient analysis , analysis of dynamics of semi- rigid asphalt pavement with multiple cracks under traffic loads . Discuss moving vehicular loads , multiple crack spacing changes of the crack tip stress field and the stress intensity factor . 4 , combined with a road-building project in Henan , were analyzed by the numerical simulation of crack propagation path of semi- rigid asphalt pavement with multiple cracks under traffic loads , respectively modulus of the surface layer , base modulus , the thickness of the surface layer , the grassroots thickness as well as the relative position of multiple cracks crack propagation by laboratory experiments , derived asphalt trabecular crack propagation path , and were compared with the results of numerical simulation , both in good agreement .

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Pavement Engineering > Road : use of the material points > Asphalt Pavement
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