|Table of Contents|

Control of designing indices for asphalt pavement with different types of base(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年01期
Page:
6-11
Research Field:
Publishing date:
2011-02-28

Info

Title:
Control of designing indices for asphalt pavement with different types of base
Author(s):
ZHANG Yan-hong1; 2;  SHEN Ai-qin1;  GUO Yin-chuan1;  WANG Xue-li3;  FENG Ya-jun3
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China;
2. China Highway Engineering Consulting Limited Group Company, Beijing 100097, China;
3. Shaanxi Province Group of Expressway Construction, Xi'an 710054, Shaanxi, China
Keywords:
road engineering;  flexible pavement;  compound pavement;  semi-rigid pavement;  design parameter;  shearing stress
PACS:
U416.217
DOI:
-
Abstract:
Based on the reconstruction and extension project of Xitong expressway, the fatigue and breakage forms of semi-rigid asphalt pavement, compound base asphalt pavement and flexible base asphalt pavement were analyzed and the corresponding design parameter system was established separately. The sensibility of the materials parameter as the mechanical responses was analyzed using Shell designing software Bisar3.0, which verified the rationality of pavement de-signing indices from the point of stress balance. The results show that taking flexible strain and surface shear stress as designing indices for flexible pavement could keep the modulus value of semi-rigid base in proper range. Taking flexible stress of base and shear stress of base as designing indices for semi-rigid pavement and compound pavement could constraint the modulus value of semi-rigid base. The introduction of shearing stress is particularly necessary for asphalt pavement design because it can seriously affect material parameters and help optimize both the structure and material design. 9 tabs, 6 figs, 10 refs.

References:

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Last Update: 2011-02-28