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Impact propagation effects along reinforced concrete beams

 Impact propagation effects along reinforced concrete beams
Author(s): , , , ORCID
Presented at IABSE Symposium: Towards a Resilient Built Environment Risk and Asset Management, Guimarães, Portugal, 27-29 March 2019, published in , pp. 825-832
DOI: 10.2749/guimaraes.2019.0825
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This paper studies the time-dependent structural behaviour of concrete beams subjected to impact loading. Drop-weight tests have been carried out in 1180 x 100 x 100 mm longitudinally reinforced co...
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Bibliographic Details

Author(s): (Dept. Continuum Mechanics & Structures, Universidad Politécnica de Madrid, Spain)
(Dept. Continuum Mechanics & Structures, Universidad Politécnica de Madrid, Spain)
(Dept. Civil & Environmental Eng., Chalmers University of Technology, Gothenburg, Sweden)
ORCID (Dept. Civil & Environmental Eng., Chalmers University of Technology, Gothenburg, Sweden)
Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Towards a Resilient Built Environment Risk and Asset Management, Guimarães, Portugal, 27-29 March 2019
Published in:
Page(s): 825-832 Total no. of pages: 8
Page(s): 825-832
Total no. of pages: 8
DOI: 10.2749/guimaraes.2019.0825
Abstract:

This paper studies the time-dependent structural behaviour of concrete beams subjected to impact loading. Drop-weight tests have been carried out in 1180 x 100 x 100 mm longitudinally reinforced concrete beams. Experimental results have been obtained by combing a high speed camera with two-dimensional digital image correlation. The analysis focused on the dynamic internal forces distribution and wave propagation. Flexural moments and, especially, shear forces were greater than their static strengths, confirming the strain-rate dependence of both failure mechanisms and clarifying the sensitivity of concrete to develop brittle failure. Wave propagation analysis showed a variable velocity, decreasing as the slenderness of the effective span increased.

Keywords:
concrete beams impact internal forces wave propagation digital image correlation