Analysis on Influencing Factors on Effective Reinforcement Depth by Dynamic Compaction Method in Backfill Collapsible Loess Foundation

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Analysis on Influencing Factors on Effective Reinforcement Depth by Dynamic Compaction Method in Backfill Collapsible Loess Foundation
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                        ZHANG Jun-qiZHANG Jun-qi
Hebei Research Institute of Construction & Geotechnical Investigation Co. Ltd.
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WU Yan-biaoWU Yan-biao
Shenhua Ningxia Coal Industry Group Co., Ltd.， Coal Liquefaction Project Construction Headquarters
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WANG De-liangWANG De-liang
Hebei Research Institute of Construction & Geotechnical Investigation Co. Ltd.
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Affiliation:Hebei Research Institute of Construction & Geotechnical Investigation Co. Ltd.,Shenhua Ningxia Coal Industry Group Co., Ltd.， Coal Liquefaction Project Construction Headquarters,Hebei Research Institute of Construction & Geotechnical Investigation Co. Ltd.
Clc Number:TU472
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Abstract:

In a project of backfill collapsible loess foundation in the Northeast, some regional soil collapsibility was not completely eliminated. Analysis is made on the influencing factors on effective reinforcement depth by dynamic compaction method in backfill collapsible loess foundation, the first influencing factors are determined to be the consolidation energy and one-shot points, and the soil moisture content, the thickness and distribution of different soils, compaction rate and the dynamic compaction design factors should also be considered.

Key words:foundation reinforcement; dynamic compaction; backfill collapsible loess foundation; effective reinforcement depth

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History

Received:July 16,2013
Revised:July 16,2013
Adopted:August 15,2013
Online: October 29,2013
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