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Shock and Vibration
Volume 2016 (2016), Article ID 4703981, 8 pages
http://dx.doi.org/10.1155/2016/4703981
Research Article

Mechanical Behavior of Unsaturated Soils Subjected to Impact Loading

1Wuhan Municipal Construction Group Co. Ltd., Wuhan 430023, China
2College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China

Received 24 May 2015; Revised 12 August 2015; Accepted 31 August 2015

Academic Editor: Georges Kouroussis

Copyright © 2016 Xianqi Xie 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.

Abstract

This paper presents an experimental study on unsaturated soils. A designed test setup was used and the impact loading was applied with a drop hammer. The experimental results show that the soil properties, including water content, density, void ratio, and saturation, changed because of impact loading, and these variations of the soil properties affected the matrix suctions of the unsaturated soils. The impact hole depth increased with the increasing impact energy and gradually reached a critical value. The dynamic stress in soil increased with the increased impact loading. The results obtained in this work can be applied to optimize the effective reinforcement region of soils in the dynamic compaction construction.