Jetting Techniques for Pile Installation and Environmental Impact Minimization

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Title: Jetting Techniques for Pile Installation and Environmental Impact Minimization
Author: Smith, Walter Alex
Advisors: Dr. M.S. Rahman, Committee Member
Dr. Roy H. Borden, Committee Co-Chair
Dr. Mohammed A. Gabr, Committee Chair
Abstract: Development of a comprehensive laboratory experimental program provided insight into the effects of jetting parameters (i.e. water volume flowrate and jet nozzle velocity) on maximum pile insertion depth, pile insertion rate, volume of debris transported to the ground surface, and the extent of the debris zone area (installation characteristics). This research is a two-part process involving laboratory and full-scale field jetting applications to determine the environmental impacts of jetting and the possibility of minimizing these impacts through jetting parameter optimization. The laboratory experimental program involved jetting installations in several soil types with unique grain-size distribution characteristics. Installation characteristics were compared for different sand types for the various jetting parameters investigated in order to develop a model for full-scale jetted pile installations. Results of the experimental program show that optimizing the jetting parameters for a given soil type may have positive effects on decreasing the surface impact of jetted pile installations. Recommended design procedures for using the jetted pile model are presented.
Date: 2003-11-13
Degree: MS
Discipline: Civil Engineering
URI: http://www.lib.ncsu.edu/resolver/1840.16/1499


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