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Title: DESIGN FOR MINIMIZING DETRIMENTAL VIBRATIONS FROM CONSTRUCTION BLASTS
Accession Number: 00348706
Record Type: Component
Availability: Find a library where document is available Abstract: Effects of ground vibrations on structures and people in the vicinity of construction blasts have become a major environmental concern and problem to engineers and contractors as well as to the general public. Understanding of the propagation characteristics of stress waves produced by blasting and structural response to ground vibration is essential in planning and design for safe blasting operations to minimize or eliminate legitimate damage claims and complaints. Both the theoretical and empirical propagation laws for ground motions resulting from blasting are analyzed; by this means, the intensity of ground vibration can be predicted on the basis of weight of explosives, distance from point of detonation, dynamic properties of transmitting medium, and other variables. Existing damage criteria by which the damage to a structure can be related to the intensity of ground vibration are reviewed to show that, although dynamic analysis (such as the response-spectrum technique) may provide the most rational approach, peak particle velocity appears to be the best and most practical criterion for use in design of safe blasting operations. However, the currently recommended design criterion of 50-mm/s (2-in/s) peak particle velocity, applicable uniformly to all types of structures, is found to be inadequate. Revised design criteria based on the type, age, and stress history of the structure are proposed. Structures are classified into four categories, and the safe design value is recommended for each. Human response to vibration is found to be very critical and sometimes a controlling factor in the design. A case study is presented to illustrate a design based on the revised design criteria. (Author)
Supplemental Notes: Publication of this paper sponsored by Committee on Earthwork Construction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Bituminous mixes, concrete pavements and structures, testing and construction prices Monograph Accession #: 01411629
Authors: Chae, Yong SPagination: pp 67-72
Publication Date: 1981
Serial: Conference:
60th Annual Meeting of the Transportation Research Board
Location:
Washington District of Columbia, United States ISBN: 0309032638
Media Type: Print
Features: Figures
(8)
; References
(15)
TRT Terms: Uncontrolled Terms: Subject Areas: Bridges and other structures; Construction; Design; Highways; Pavements; Safety and Human Factors; I53: Construction of Bridges and Retaining Walls
Files: TRIS, TRB
Created Date: Jun 30 1982 12:00AM
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