Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction

Fil: García, Diego Alberto. Universidad Nacional de Misiones. Facultad de Ingeniería. Departamento de Ingeniería Civil; Argentina.

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Autores principales: García, Diego Alberto, Rosales, Marta Beatriz, Sampaio, Rubens
Formato: Documento de conferencia publishedVersion
Lenguaje:Inglés
Publicado: Asociación Argentina de Mecánica Computacional 2018
Materias:
Uncertainty
Timber footbridge
Dynamic behaviour
Human Structure Interaction
Acceso en línea:https://hdl.handle.net/20.500.12219/4137
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Repositorio Institucional Digital de la UNaM (RIDUNAM) de Universidad Nacional de Misiones
id I77-R195-20.500.12219-4137
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spelling I77-R195-20.500.12219-41372023-02-06T16:24:54Z Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction García, Diego Alberto Rosales, Marta Beatriz Sampaio, Rubens Uncertainty Timber footbridge Dynamic behaviour Human Structure Interaction Fil: García, Diego Alberto. Universidad Nacional de Misiones. Facultad de Ingeniería. Departamento de Ingeniería Civil; Argentina. Fil: García, Diego Alberto. Consejo Nacional de Investigaciones Científica y Técnicas; Argentina. Fil: Rosales, Marta Beatriz. Universidad Nacional del Sur. Departamento de Ingeniería; Argentina. Fil: Rosales, Marta Beatriz. Universidad Nacional del Sur. Instituto de Física del Sur; Argentina. Fil: Rosales, Marta Beatriz. Consejo Nacional de Investigaciones Científica y Técnicas. Instituto de Física del Sur; Argentina. Fil: Sampaio, Rubens. Pontifícia Universidade Católica do Rio de Janeiro. Departamento de Engenharia Mecânica; Brasil. A dynamic study of timber footbridges with uncertain mechanical properties considering the Human Structure Interaction (HSI) induced by the pedestrians is presented in this paper. These structural systems made of timber are increasingly employed due to the high stiffness/weight ratio that wood exhibits in relation to thers structural materials. More, the development and implementation of laminated beams permits larger spans. These features can lead to lightweight structural systems in which the acceleration levels can exceed the human comfort limits. The sources of uncertainty of this structural model are the timber mechanical and physical properties, Modulus of Elasticity (MOE) and mass density. Also, the eometrical design of the boards that compose the laminated timber beams upporting the floor involves variability in the distances between finger joints. Probability Density Functions (PDFs) of the timber properties are formulated from the Principle of Maximum Entropy (PME). The finger joints distance generates the lengthwise variability of the MOE and mass density functions in each board of the laminated beams. The influence of these stochastic variables in the structural esponse on a free vibration problem that includes the HSI induced by the human walking is assessed. Pedestrians arrive to the footbridge under a Poisson distribution and the arrival velocity is such that a medium/low transit density is chieved in accordance with the footbridge dimension. Stochastic properties of the HSI model are introduced through their PDFs. Changes in the natural frequencies and damping of the structure induced by the HSI are numerically obtained through the Finite Element Method (FEM) and Monte Carlo Simulations (MCS). These odifications are evaluated in relation to the footbridge occupancy at each instant. The present stochastic model contributes to obtain a more realistic description of the response of this type of structures. 2018-11-09 info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion https://hdl.handle.net/20.500.12219/4137 eng info:eu-repo/semantics/altIdentifier/urn/https://cimec.org.ar/~mstorti/MECOM2018/paper-5850.pdf info:eu-repo/semantics/openAccess application/pdf application/pdf 472.1 KB Asociación Argentina de Mecánica Computacional
institution Universidad Nacional de Misiones
institution_str I-77
repository_str R-195
collection Repositorio Institucional Digital de la UNaM (RIDUNAM)
language Inglés
topic Uncertainty
Timber footbridge
Dynamic behaviour
Human Structure Interaction
spellingShingle Uncertainty
Timber footbridge
Dynamic behaviour
Human Structure Interaction
García, Diego Alberto
Rosales, Marta Beatriz
Sampaio, Rubens
Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
topic_facet Uncertainty
Timber footbridge
Dynamic behaviour
Human Structure Interaction
description Fil: García, Diego Alberto. Universidad Nacional de Misiones. Facultad de Ingeniería. Departamento de Ingeniería Civil; Argentina.
format Documento de conferencia
Documento de conferencia
publishedVersion
author García, Diego Alberto
Rosales, Marta Beatriz
Sampaio, Rubens
author_facet García, Diego Alberto
Rosales, Marta Beatriz
Sampaio, Rubens
author_sort García, Diego Alberto
title Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
title_short Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
title_full Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
title_fullStr Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
title_full_unstemmed Uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
title_sort uncertainties in the dynamic behaviour of timber footbridges considering human structure interaction
publisher Asociación Argentina de Mecánica Computacional
publishDate 2018
url https://hdl.handle.net/20.500.12219/4137
work_keys_str_mv AT garciadiegoalberto uncertaintiesinthedynamicbehaviouroftimberfootbridgesconsideringhumanstructureinteraction
AT rosalesmartabeatriz uncertaintiesinthedynamicbehaviouroftimberfootbridgesconsideringhumanstructureinteraction
AT sampaiorubens uncertaintiesinthedynamicbehaviouroftimberfootbridgesconsideringhumanstructureinteraction
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