Location
St. Louis, Missouri
Presentation Date
13 Mar 1991, 1:30 pm - 3:30 pm
Abstract
A new ground vibration isolation method is described, which uses inflated, flexible cushions. The isolation cushions have therefore a low impedance and act as vibration reflectors in the ground. Practical aspects, such as the production of the gas cushions screen, the installation method and the gas-tightness of the gas cushions are discussed. The screen can be installed to great depth, using the well-proven slurry trench technique. After installation, the trench is filled with a self-hardening cement-bentonite grout, which creates a plastic, water-tight protection layer around the cushions and assures the long term stability of the screen. The gas cushion screen can thus be used for permanent installations in the ground. The paper describes the theoretical concept of the gas cushion screen. The isolation efficiency is analyzed, using the boundary element method. The theoretically predicted isolation effect is compared with field tests and data published in the literature. The test results suggest that the isolation efficiency of the gas cushion screen is comparable to that of an open trenches.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1991 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Massarsch, K. Rainer, "Ground Vibration Isolation Using Gas Cushions" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 13.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session11/13
Included in
Ground Vibration Isolation Using Gas Cushions
St. Louis, Missouri
A new ground vibration isolation method is described, which uses inflated, flexible cushions. The isolation cushions have therefore a low impedance and act as vibration reflectors in the ground. Practical aspects, such as the production of the gas cushions screen, the installation method and the gas-tightness of the gas cushions are discussed. The screen can be installed to great depth, using the well-proven slurry trench technique. After installation, the trench is filled with a self-hardening cement-bentonite grout, which creates a plastic, water-tight protection layer around the cushions and assures the long term stability of the screen. The gas cushion screen can thus be used for permanent installations in the ground. The paper describes the theoretical concept of the gas cushion screen. The isolation efficiency is analyzed, using the boundary element method. The theoretically predicted isolation effect is compared with field tests and data published in the literature. The test results suggest that the isolation efficiency of the gas cushion screen is comparable to that of an open trenches.
