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The Research of Flexible Base in Tibet’s Asphalt Pavement

Author: GuoYi
Tutor: LiangNaiXing
School: Chongqing Jiaotong University
Course: Materials Science
Keywords: Asphalt Pavement Granular Base Stress Strain Design specifications
CLC: U416.217
Type: Master's thesis
Year: 2010
Downloads: 54
Quote: 0
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Abstract


Tibet sparsely populated , distance between cities , traffic is relatively small . Tibet is rich in sand and gravel , road construction in these areas , such as road base graded crushed stone instead of using the traditional semi-rigid base , the surface layer paving thin layer of asphalt mixture , reduce the project cost , and promote Tibet low-grade road transport development has a positive meaning . Test theoretical analysis, granular base asphalt pavement bearing capacity characteristics , Tibet pellets asphalt pavement structure analysis method , which provides a scientific basis for the promotion and application of pellet material transportation construction in Tibet . Paper relies on scientific projects in transportation in Tibet \the mechanical properties were analyzed to show that the pellets the mechanical parameters and material gradation, the maximum size of the pellets have a closer relationship ; pavement structure analysis of the mechanical response of different structures flexible asphalt pavement using finite element analysis software ANSYS , compressive stress, shear stress and soil - based compressive strain on top with the the pavement structural changes in the law , the analysis indicates that the the soil granular base is significant ; at home and abroad in the granular base design methods and design specifications and Tibet the specific characteristics of the transportation construction , asphalt pavement design specifications on Tibet pellets were discussed. The results of research on the graded gravel granular base provides an important scientific basis for applications in transportation construction in Tibet , while the graded gravel granular base pavement design methods and pavement structure stress-strain propagation law carrying out recommendations on future pavement structure design, analysis has a certain reference value .

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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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