Uncertainties of Smear Zone Characteristics in the Design of Preloading with Prefabricated Vertical Drains

Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

ICGESM04_332

تاریخ نمایه سازی: 18 خرداد 1389

Abstract:

Installing prefabricated vertical drains using mandrels induces disturbance of the soil surrounding the drain, resulting in a smear zone with the reduced permeability. The required time for pore pressure dissipation in preloading design is strongly associated with the smear zone characteristics. In this study, the effects of smear zone properties on preloading time are numerically investigated. Parametric study is conducted to find out the range of smear zone parameters significantly influencing the consolidation period. It is observed that the characteristics of smear zone namely size and permeability have a substantial impact on the preloading design to achieve certain soil strength and stiffness satisfying both bearing capacity and settlement design criteria.

Authors

A. Parsa Pajouh

School of Civil and Environmental Engineering, Faculty of Engineering and IT, University of Technology, Sydney (UTS), Australia

B. Fatahi

School of Civil and Environmental Engineering

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