Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

Ground Vibration Measures are often employed to reduce through-soil, road or railway traffic-induced disturbances or ground vibrations caused from machine foundations. This kind of problem is sometimes a major concern in densely populated urban areas situated at soft soil conditions and for structures operating sensitive equipments. In this paper a full three-dimensional (3D) FEM investigation of the effectiveness of vertical, rectangular cross-section, wave barriers (open trenches and concrete walls) in reducing ground vibrations is carried out. The reduction capacity of these measures is also compared with an array of concrete piles or sheet piles, which replaces them. The analysis considers moving and stationary vertical load conditions simulating traffic vibrations and machine foundation vibrations respectively. Ground vibrations caused from a transient source with rather low spectrums predominant frequency, sensitive for the dynamics of the nearby buildings, is considered. A 3D FEM program is formulated employing an implicit direct time integration scheme. Radiation damping, is simulated through transmitting boundaries constructed based on the radiation criterion. Considering different parameters, numerical examples are presented which highlight the reduction capacity of the barriers.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-26-2001

Document Version

Final Version

Rights

© 2001 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 26th, 12:00 AM Mar 31st, 12:00 AM

3D Fern Analysis of Ground Vibration Measures for Stationary and Moving Transit Source

San Diego, California

Ground Vibration Measures are often employed to reduce through-soil, road or railway traffic-induced disturbances or ground vibrations caused from machine foundations. This kind of problem is sometimes a major concern in densely populated urban areas situated at soft soil conditions and for structures operating sensitive equipments. In this paper a full three-dimensional (3D) FEM investigation of the effectiveness of vertical, rectangular cross-section, wave barriers (open trenches and concrete walls) in reducing ground vibrations is carried out. The reduction capacity of these measures is also compared with an array of concrete piles or sheet piles, which replaces them. The analysis considers moving and stationary vertical load conditions simulating traffic vibrations and machine foundation vibrations respectively. Ground vibrations caused from a transient source with rather low spectrums predominant frequency, sensitive for the dynamics of the nearby buildings, is considered. A 3D FEM program is formulated employing an implicit direct time integration scheme. Radiation damping, is simulated through transmitting boundaries constructed based on the radiation criterion. Considering different parameters, numerical examples are presented which highlight the reduction capacity of the barriers.