Experiment Study of Loess-filled Embankment under Dynamic Compaction
Yunshan Han*, Yanli Dong, Yuanlong Wang, Wei Duan, Weihua Qin
Identifiers and Pagination:Year: 2015
First Page: 644
Last Page: 649
Publisher Id: TOCIEJ-9-644
Article History:Received Date: 19/1/2015
Revision Received Date: 17/4/2015
Acceptance Date: 18/5/2015
Electronic publication date: 10/9/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
To investigate the dynamic compaction mechanism of loess-filled embankment, a computational model of unit volume compaction effort was proposed as compared with the compaction test. The energy level of dynamic compaction used in actual projects was also considered. The differences between the compaction test and the unit volume compaction effort in the actual projects were studied. And also, the unit volume compaction efforts of the main tamping point and the whole reinforcement scope were analyzed. It can be drawn out that the compaction criterion should be chosen based on the water content of loess on site. Based on the model test, the laws of acceleration, velocity and displacement under the dynamic impact of hammer on the loess-filled embankment were analyzed in our study. The whole process also perfectly explained the movement history of hammer under dynamic compaction and the work-energy conversion efficiency of dynamic compaction.