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Archive of Applied Mechanics

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24-06-2021 | Original

Suspension bridges under blast loads: a preliminary linearized approach

Authors: G. T. Michaltsos, D. S. Sophianopoulos

Published in: Archive of Applied Mechanics | Issue 9/2021

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Abstract

This paper investigates the influence of an explosive (blast) load on the behavior of a suspension bridge, after studying the explosion characteristics (force, distance and height of explosion) and their effect on the bridge. More specifically, the influence of these characteristics on the three basic deformations of the bridge, namely the vertical, the lateral and the torsional ones, is sought. In doing this, the bridge model used is simple, and does not include secondary factors, that do not decisively affect the response of the bridge. The theoretical formulation is based on a continuum approach that has been used in the literature to analyze such suspension bridges. The analysis is carried out using the modal superposition method, and the resulting differential systems are solved using the Laplace transformation and the Duhamel’s integral. The present work is preliminary and will be followed by a more accurate and thorough one under preparation.

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Title: Suspension bridges under blast loads: a preliminary linearized approach
Authors: G. T. Michaltsos
D. S. Sophianopoulos
Publication date: 24-06-2021
Publisher: Springer Berlin Heidelberg
Published in: Archive of Applied Mechanics / Issue 9/2021
Print ISSN: 0939-1533
Electronic ISSN: 1432-0681
DOI: https://doi.org/10.1007/s00419-021-01991-5

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