Highway Subgrade Dynamic Response Model Test Study on Foundation-Broaden Dynamic Compaction Consolidation

Xiang Hong Pan; Zhan Yong Yao; Kai Zhang; Zhuang Jin

doi:10.4028/www.scientific.net/AMM.353-356.842

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 353-356Highway Subgrade Dynamic Response Model Test Study...

Highway Subgrade Dynamic Response Model Test Study on Foundation-Broaden Dynamic Compaction Consolidation

Abstract:

While widen the highway foundation, due to it is still unclear that the law of dynamic compaction vibration impact on the original subgrade and foundation structure , which restricts the use of dynamic compaction technology in the highway foundation-broaden project. In this paper, by using the dynamic compaction indoor model test, simulated the dynamic compaction road widening foundation works, monitored the vibration acceleration of the pavement and subgrade surface in the process of dynamic compaction vibration, analyzed the dynamic compaction vibration propagation law of the roadside foundation in the subgrade structure. At the same time, we made the vibration amplitude of the key points and the rammer subsoil dynamic pressure value as double assessment indicators. Besides, we analyzed the dynamic compaction vibration response of subgrade under different parameters, evaluated foundation reinforcement effect. With research, under the same tamping energy and in a certain range of rammer diameter and weight, we had better choose small radius rammer and the compaction process of heavier rammers dropping from lower point, which can reduce the foundation dynamic vibration of the old subgrade and ensure foundation reinforcement effect.

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Periodical:

Applied Mechanics and Materials (Volumes 353-356)

Pages:

842-846

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.353-356.842

Citation:

Cite this paper

Online since:

August 2013

Authors:

Xiang Hong Pan*, Zhan Yong Yao, Kai Zhang, Zhuang Jin

Keywords:

Compaction Process, Dynamic Compaction, Foundation, Subgrade Widen

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