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Theoretical interpretation of impulse response tests of embedded concrete structures

Ottosen, Niels Saabye LU ; Ristinmaa, Matti LU and Davis, AG (2004) In Journal of Engineering Mechanics 130(9). p.1062-1071
Abstract
For a concrete beam resting on a bed of sand, an analytical solution technique is derived by which the mobility can be identified. To achieve realistic predictions, significant damping in the bed needs to be introduced. The modest damping of the concrete has little effect on the mobility for small frequencies whereas it has a significant effect for higher frequencies. An imperfection in the bed in terms of a void increases the mobility dramatically for low frequencies whereas the mobility for higher frequencies is almost unchanged. An imperfection in the beam in terms of honeycombing of the concrete, on the other hand, manifests itself by increasing the mobility for high frequencies while leaving the mobility for small frequencies less... (More)
For a concrete beam resting on a bed of sand, an analytical solution technique is derived by which the mobility can be identified. To achieve realistic predictions, significant damping in the bed needs to be introduced. The modest damping of the concrete has little effect on the mobility for small frequencies whereas it has a significant effect for higher frequencies. An imperfection in the bed in terms of a void increases the mobility dramatically for low frequencies whereas the mobility for higher frequencies is almost unchanged. An imperfection in the beam in terms of honeycombing of the concrete, on the other hand, manifests itself by increasing the mobility for high frequencies while leaving the mobility for small frequencies less influenced. These latter conclusions are in good agreement with field experience for concrete slabs resting on soil. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
plates, viscoelasticity, in situ tests, loads, impulsive, Fourier transform, foundations, beams, concrete structures
in
Journal of Engineering Mechanics
volume
130
issue
9
pages
1062 - 1071
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • wos:000223359600007
  • scopus:4444294393
ISSN
1943-7889
DOI
10.1061/(ASCE)0733-9399(2004)130:9(1062)
language
English
LU publication?
yes
id
8dfc1d1d-6864-4054-893f-6d55fefac6c8 (old id 269534)
date added to LUP
2007-10-29 13:03:39
date last changed
2017-08-06 03:50:42
@article{8dfc1d1d-6864-4054-893f-6d55fefac6c8,
  abstract     = {For a concrete beam resting on a bed of sand, an analytical solution technique is derived by which the mobility can be identified. To achieve realistic predictions, significant damping in the bed needs to be introduced. The modest damping of the concrete has little effect on the mobility for small frequencies whereas it has a significant effect for higher frequencies. An imperfection in the bed in terms of a void increases the mobility dramatically for low frequencies whereas the mobility for higher frequencies is almost unchanged. An imperfection in the beam in terms of honeycombing of the concrete, on the other hand, manifests itself by increasing the mobility for high frequencies while leaving the mobility for small frequencies less influenced. These latter conclusions are in good agreement with field experience for concrete slabs resting on soil.},
  author       = {Ottosen, Niels Saabye and Ristinmaa, Matti and Davis, AG},
  issn         = {1943-7889},
  keyword      = {plates,viscoelasticity,in situ tests,loads,impulsive,Fourier transform,foundations,beams,concrete structures},
  language     = {eng},
  number       = {9},
  pages        = {1062--1071},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Engineering Mechanics},
  title        = {Theoretical interpretation of impulse response tests of embedded concrete structures},
  url          = {http://dx.doi.org/10.1061/(ASCE)0733-9399(2004)130:9(1062)},
  volume       = {130},
  year         = {2004},
}