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Advances in Civil Engineering
Volume 2018, Article ID 1347547, 9 pages
Research Article

In Situ Monitoring of the Long-Term Settlement of High-Fill Subgrade

1Associate Professor, College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2Master Student, College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
3Research Fellow, Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576

Correspondence should be addressed to Kai Yao; ude.sun.u@iakoay

Received 16 July 2018; Revised 16 August 2018; Accepted 26 August 2018; Published 30 September 2018

Academic Editor: Venu G. M. Annamdas

Copyright © 2018 Liang Jia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Monitoring the settlement of high-fill subgrade plays a significant role in maintaining the service quality of highways. To investigate the postconstruction settlement of high-fill subgrade under gravity stress and vehicle loads, in situ monitoring was carried out on the Lanzhou-Yongjing highway. Single-point settlement meters were buried in various depths under the driveway and road shoulder. The evolution of settlement with time and space was analyzed. The results show that the settlement of the road shoulder is greater than that of the driveway; the settlement of the subgrade increases with time and tends to be stable after 1 year; the vehicle loads have no big effect on the settlement of the subgrade; the exponential model can be adopted to predict the settlement of the Lanzhou-Yongjing highway accurately.