|Table of Contents|

Control criterion of subgrade differential settlement based on pavement damage response(PDF)

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

Issue:
2010年05期
Page:
31-34
Research Field:
Publishing date:
2010-10-20

Info

Title:
Control criterion of subgrade differential settlement based on pavement damage response
Author(s):
CHENG Xing-xin1; 2;  WANG Xuan-cang1;  GAO Zhi-wei1
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Traffic Engineering Quota Station, Transportation Department of Shaanxi Province, Xi'an 710064, Shaanxi, China
Keywords:
road engineering;  differential settlement;  control standard;  finite element method;  pavement structure;  damage response
PACS:
U416.1
DOI:
-
Abstract:
Aimed at expressway pavement damage caused by differential settlements, a differential settlement control standard is established according to the mechanical response of pavement structure, so that the subgrade construction quality can be controlled and pavement cracking can be prevented. A boundary condition is imposed to the finite element model of pavement structure in order to simulate differential settlement on the pavement structure. A differential settlement control standard was proposed considering flexural strength of pavement materials and fatigue damage performance of pavement structure. The results show that: the variable slope rate of 0.23% can be taken as settlement control standards when only considering the flexural strength of pavement materials; considering the fatigue performance of pavement, the rate of 0.58% as the control standard, considering the combined effects, the rate of 0.37% as the control standard, the corresponding horizontal and vertical subgrade settlement control values are 4.5 cm and 7.5 cm respectively. 4 tabs, 2 figs, 8 refs.

References:

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Last Update: 2010-10-20