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Of FWD testing technology in the rock fill embankment quality testing

Author: ZuoGuangWu
Tutor: ShaAiMin
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Rock-Filling Embankment FWD backcalculation deflection basin time history mechanics model minimum of deflection error arithmetic.
CLC: U416.1
Type: Master's thesis
Year: 2004
Downloads: 194
Quote: 4
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This text started with seeking method of Rock-Filling Embankment quality assessment, it was demonstrated scientific and feasibility of the assessment way using FWD technology, on the foundation of analyzing current situation of the Rock-Filling Embankment quality assessment research and the applications situation of FWD test technology.For studying backcalculation mechanical model of Rock-Filling Embankment, which based on FWD deflection basin and time-history data, on one hand this text analyzed Rock-Filling Embankment intension mechanism and distortion characteristic, and drew a conclusion that Rock-Filling Embankment intension and distortion has a good relation with enclose pressure. On the other hand, researched FWD testing principle and performance and learned the infection of FWD test load to Rock-Filling Embankment backcalculation result. Thus the theoretic deflection was modified by two ways: Passion and divide layer principle. Facing to minimum of deflection error arithmetic, A complicated mathematics method was adopted to get over iterative method inherence defect.In view of the above, a series of Rock-Filling Embankment FWD test method was offered from test method to the treatment method of test data. Thus applications principle and practice method of using FWD technology in Rock-Filling Embankment quality assessment was researched completely and systemically, and date processing software FWDP was worked out, which the abundant functions of Data Processing and Report Output offered a new method of Rock-Filling Embankment quality assessment, having practice meanings.

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