Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Vibration can cause either serviceability and malfunctioning problems reducing people’s comfort to an unacceptable level, or safety problems with danger of failure. The belief of the author is that the presentation of some practical cases of machine foundation vibrations will be of interest, beneficial and helpful for many researchers and engineers involved in both theoretical and practical studies. Therefore, the most relevant case studies on vibrations of machine foundation ensembles, encountered in practice in the last ten years of activity, will be presented. In all malfunctioning or excessive vibration cases the technical assessment has started with a complex program of vibration measurements followed by a sound engineering judgment. A remedial solution was elaborated for the encountered vibration problem and put into practice. The results led to the diminution of the dangerous vibrations and to the avoidance of the annoying ones. Among the cases selected for this paper, the most representative are: the malfunctioning of a “compressor – foundation – supporting soil” system caused both by an incorrect dynamic design process and execution; the annoying vibrations generated by unbalanced forces of an offset printing press and the annoying vibrations produced by weaving looms in an adjoining office building. The second part of the paper presents a safe blast demolition by small controlled explosions of two lateral wings of an existing commercial building. The intervention was caused by a first attempt of demolition which caused severe vibrations of many blocks of flats existing in the near vicinity. The officials of the “State Inspection for Construction” decided the health monitoring of the entire demolition process, especially of the central part of the building which was to remain after the demolition.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

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

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Machine Foundations and Blast Engineering Vibrations Case Studies

San Diego, California

Vibration can cause either serviceability and malfunctioning problems reducing people’s comfort to an unacceptable level, or safety problems with danger of failure. The belief of the author is that the presentation of some practical cases of machine foundation vibrations will be of interest, beneficial and helpful for many researchers and engineers involved in both theoretical and practical studies. Therefore, the most relevant case studies on vibrations of machine foundation ensembles, encountered in practice in the last ten years of activity, will be presented. In all malfunctioning or excessive vibration cases the technical assessment has started with a complex program of vibration measurements followed by a sound engineering judgment. A remedial solution was elaborated for the encountered vibration problem and put into practice. The results led to the diminution of the dangerous vibrations and to the avoidance of the annoying ones. Among the cases selected for this paper, the most representative are: the malfunctioning of a “compressor – foundation – supporting soil” system caused both by an incorrect dynamic design process and execution; the annoying vibrations generated by unbalanced forces of an offset printing press and the annoying vibrations produced by weaving looms in an adjoining office building. The second part of the paper presents a safe blast demolition by small controlled explosions of two lateral wings of an existing commercial building. The intervention was caused by a first attempt of demolition which caused severe vibrations of many blocks of flats existing in the near vicinity. The officials of the “State Inspection for Construction” decided the health monitoring of the entire demolition process, especially of the central part of the building which was to remain after the demolition.