Dissertation > Excellent graduate degree dissertation topics show

High Modulus Subgrade Asphalt Pavement Structure Application Technology Research

Author: WangDongBo
Tutor: ZhangMinJiang
School: Shenyang University of construction
Course: Road and Railway Engineering
Keywords: High modulus of subgrade Impact Compaction Structural Analysis Finite Element
CLC: U416.217
Type: Master's thesis
Year: 2011
Downloads: 78
Quote: 0
Read: Download Dissertation

Abstract

Roadbed as the basis of the road is an important part of the pavement structure , plays a decisive role in the strength and stiffness of the pavement structure . Impact compaction technology used construction machinery and high-amplitude , low - frequency , high- impact energy compaction machinery, compacted and traditional construction methods , significantly improved the effect of subgrade compaction and subgrade resilient modulus . Subgrade resilient modulus have a greater impact on the reduction of the thickness of the pavement structure , reduce the project cost . Therefore, with the pavement structure based on our extensive applications , high modulus of subgrade impact compaction technology has broad application prospects . As for the mechanical analysis of the structure of the high modulus of subgrade and reasonable structure and thickness of the study is necessary. This paper studies content in general , including the following four parts : on the basis of the mechanism of action study of impact compaction technology , the different applicability of impact compaction technology in different roadbed filler , punching the effect of non-uniform testing standards , requires a combination of specific test results to determine . South Africa learn from Liaoning Province, the construction of the coastal highway engineering experience Strong Foundation and Thin \effectively reduce the asphalt road surface deflection , and played a certain role in improving the structure of layers of bottom flexural stress ; high modulus of soil base , base thickness can be appropriately thinned 15 ~ 20cm, surface layer using rubber new asphalt asphalt road pavement structure better . Using the finite element method of heavy traffic , high modulus pavement structure mechanical calculations and analysis , theoretical studies have shown that : high modulus of subgrade under heavy traffic can effectively reduce the surface deflection value , better resistance to deformation ability to exhibit lower axle load sensitivity . Liaoning Coastal Highway of high modulus subgrade entity engineering research and Pavement performance of on-site testing, to verify the effect of the use of a high modulus of subgrade and pavement structure . And be seen by Economic Benefit Analysis the impact compaction construction costs are higher than traditional construction , but efficiency can save about two-thirds of the duration . Finally, a summary of the full text of the work done by the next stage research prospects .

Related Dissertations

CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Pavement Engineering > Road : use of the material points > Asphalt Pavement
© 2012 www.DissertationTopic.Net Mobile