Location

St. Louis, Missouri

Session Start Date

6-1-1993

Abstract

This paper provides the theoretical base and a reasonable testing method for pile foundation, the top of piles are free and the bottom of piles are fixed, dynamic characteristics test of continuous beam bridge, considering the dynamic interaction of pile-soil for doing pile foundation dynamic test in site. The model analysis method and CAT( Computer Aided Test ) are used for model parameters identification from the dynamic of pile foundation mode, several low cured modes and natural frequencies are got. Furthermore, the theoretical computation compared with result of the mode test. Both are most alike. The dynamic characteristics of the pile mode are calculated with finite element and Penzine's basic assumptions, the soil medium is modeled by a series of springs with short distance each other. The stiffness coefficient of the springs can be fitted in computer that according to the result of dynamic test of pile mode. The influence rule is obtained from the dynamic characteristics of pile owing to soil depth, one or multiple kinds of soil and one or multiple layering of soil. After though researching the dynamic characteristics testing method of pile foundation mode, a reasonable testing way have obtained for dynamic parameters identification of pile foundation in site.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Third Conference

Publisher

University of Missouri--Rolla

Publication Date

6-1-1993

Document Version

Final Version

Rights

© 1993 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Jun 1st, 12:00 AM

Researches in the Testing Method of Dynamic Interaction of Pile-Soil System Model and Its Calculation of Dynamic Characteristics

St. Louis, Missouri

This paper provides the theoretical base and a reasonable testing method for pile foundation, the top of piles are free and the bottom of piles are fixed, dynamic characteristics test of continuous beam bridge, considering the dynamic interaction of pile-soil for doing pile foundation dynamic test in site. The model analysis method and CAT( Computer Aided Test ) are used for model parameters identification from the dynamic of pile foundation mode, several low cured modes and natural frequencies are got. Furthermore, the theoretical computation compared with result of the mode test. Both are most alike. The dynamic characteristics of the pile mode are calculated with finite element and Penzine's basic assumptions, the soil medium is modeled by a series of springs with short distance each other. The stiffness coefficient of the springs can be fitted in computer that according to the result of dynamic test of pile mode. The influence rule is obtained from the dynamic characteristics of pile owing to soil depth, one or multiple kinds of soil and one or multiple layering of soil. After though researching the dynamic characteristics testing method of pile foundation mode, a reasonable testing way have obtained for dynamic parameters identification of pile foundation in site.