Vertical Limit Displacements of Masonry Structures

Barba Ortega, José (2018). Vertical Limit Displacements of Masonry Structures. Thesis (Master thesis), E.T.S.I. Caminos, Canales y Puertos (UPM).

Description

Title: Vertical Limit Displacements of Masonry Structures
Author/s:
  • Barba Ortega, José
Contributor/s:
  • León González, Francisco Javier
  • Todisco, Leonardo
Item Type: Thesis (Master thesis)
Masters title: Ingeniería de las Estructuras, Cimentaciones y Materiales
Date: 2018
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Mecánica de Medios Continuos y Teoría de Estructuras
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The safety level of masonry arches (and domes) is severely affected by displacements and/or rotations that may occur on its supports. When subjected to movements, the initial geometry of the masonry arch changes and hinges appear between voussoirs, following a ductile behavior and adapting to the new boundary conditions. Displacements may be either outwards or inwards, upwards or downwards, or even combined. This can result in an increase or decrease of the horizontal force. The structural safety of masonry arches (or vaults) decreases very much with displacements and/or rotations that may produce at the abutments. In some cases leading them to collapse if such movements are larger than certain thresholds, even if loads remain constant. This dissertation focuses on understanding how masonry arches are affected by vertical displacements on one of their supports, how their geometry changes and how their inner stresses evolve; in short, on how the stability and thus the safety level is affected. In particular, the effect of the geometry variation of an arch due to a change in the boundary conditions for different initial configurations. The study has focused on finding the line of thrust, a concept associated to the plasticity limit theorems, which allows to find a stable and safe configuration for each deformed geometry of the arch. To conclude, results are validated through lab tests in other institutions or specifically developed for this dissertation.

More information

Item ID: 53186
DC Identifier: http://oa.upm.es/53186/
OAI Identifier: oai:oa.upm.es:53186
Deposited by: Biblioteca ETSI Caminos
Deposited on: 05 Dec 2018 12:21
Last Modified: 05 Dec 2018 12:21
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