Structural Mechanics Analysis of Asphalt Pavement Using Large Stone Asphalt Mixture as Base

Abstract:

Asphalt pavement with semi-rigid base is the major structure adopted in the new built highway and municipal roads in China. So as to reduce the unfavorable impact on the rehabilitation of municipal roads which require quick resumption of traffic, better base materials should be adopted. If a pavement base fails, the flexible base, i.e. large stone asphalt mixture (LSAM), should be employed in the pavement rehabilitation practice. Focusing on the practice pavement sections using LSAM as base in Hangzhou municipal roads, the effect factors of subgrade modulus, base modulus and base thickness on surface deflection and bending strain in base bottom is analyzed. That work is done through finite element method of software BISAR3.0. The results provide a practice reference for municipal roads rehabilitation needing to open traffic early.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 1221-1226
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.1221
• Online since: November 2013
• Authors: Xu Liang, Yin Gu, Jin Chang Wang, Ming Xing Yan, Si Zeng You
• Keywords: Bending Strain, BISAR Software, LSAM Base, Municipal Asphalt Pavement, Surface Defection

References

[1] Hangzhou Municipal Facilities Supervision Center, Zhejiang University. Index Survey and Optimization Design Research of Pavement Reconstruction [R]. Hangzhou: Hangzhou Municipal Facilities Supervision Center, (2013).

DOI: 10.17520/biods.2003055

[2] ZUO Jun-chao, ZHOU Zheng-feng, CAO Lin-tao. Analysis of Influence of Base Structural Parameters on Mechanical Response of Asphalt Concrete Pavement[J]. Highway, 2012, 10: 28-33.

[3] Code for Pavement Design of Urban Road (CJJ 169-2012), industry standard of PRC, China Architecture & Building Press, 2011, Beijing.

[4] Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering (JTG E20-2011), industry standard of PRC, China Communications Press, 2011, Beijing.