ENGINEERING EXAMPLE OF DYNAMIC COMPACTION REPLACEMEN T FOR MISCELLANEOUS FILL FOUNDATION AND ANALYSIS OF TREATMENT EFFECT

Category: ICETI 2017
Author: WU Daoxiang, HU Xueting, SHEN Qipeng, ZHANG Huijie
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There is a layer of miscellaneous fill on the surface at a certain site in Huangshan City which has low strength, high compressibility and poor engineering properties. The dynamic replacement was used to increase its strength, reduce its compressibility, reduce the settlement and uneven settlement and meet the design requirements. In order to more greatly improve the bearing capacity of composite foundation and reduce the settlement of foundation, the dry hard concrete with low strength was used as replacement materials what was different from other dynamic replacement treatment projects where granular materials were used as replacement materials. The detailed treatment plan was made after trial ramming, and the dynamic replacement piers were tested through load tests and other tests after treatment. The test results showed that the dynamic replacement piers using dry hard concrete as replacement materials had high strength and low deformation which could improve the bearing capacity of composite foundation and reduce foundation settlement and uneven settlement greatly.

Pages 123-125
Year 2017
Issue 2
Volume 1

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