Sara Rodríguez Jimeno Numerical simulation strategies for superadobe walls and arches

126 Pages·2012·6.03 MB·English

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Sara Rodríguez Jimeno
Numerical simulationstrategies for superadobewalls and arches
Barcelona I 2017
Numerical simulation strategies for superadobe walls and arches

DECLARATION

Name: Sara Rodríguez Jimeno
Email: [email protected]

Title of the Numerical simulation strategies for superadobe walls and arches
Msc Dissertation:
Supervisor(s): Sergio Henrique Pialarissi Cavalaro and Luca Pelà
Year: 2017

I hereby declare that all information in this document has been obtained and presented in
accordance with academic rules and ethical conduct. I also declare that, as required by these
rules and conduct, I have fully cited and referenced all material and results that are not original to
this work.

I hereby declare that the MSc Consortium responsible for the Advanced Masters in Structural
Analysis of Monuments and Historical Constructions is allowed to store and make available
electronically the present MSc Dissertation.

University: Technical University of Catalonia
Date: 14/07/2017
Signature:
___________________________

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
1
Numerical simulation strategies for superadobe walls and arches

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
2
Numerical simulation strategies for superadobe walls and arches

ACKNOWLEDGEMENTS

I would like to express my appreciation for all the people who contributed and helped me during
the length of this master program. Specially, I would like to express my gratitude to my advisors
Sergio Henrique Pialarissi Cavalaro and Luca Pelà for all their support, useful questions,
comments, and feedback through the learning process of this master’s thesis.

Many thanks are owed to the many lecturers at Padova University, for sharing their expertise and
knowledge throughout the course of the SAHC coursework classes. Special thanks to all the
organizers of the SAHC Master program for making this experience possible.

I would like to thank the MSc Consortium for the generous financial support, which made it
possible for me to participate in the program.

My heartfelt thanks to my fellow classmates and friends who helped me throughout the master
and made this degree a lot more memorable and fun filled.

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
3
Numerical simulation strategies for superadobe walls and arches

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
4
Numerical simulation strategies for superadobe walls and arches

ABSTRACT

The superadobe is a construction technique that consists on building using bags filled with soil
and adding barbwire between the courses. It is a simple, durable, sustainable, and affordable
technique that has increased in popularity over the last years. Moreover, a remarkable effort was
performed in the past years in order to analyse the structural behaviour and characterize the
mechanical properties of these constructions. However, since it is a relatively recent technique,
no previous studies of complete structures have been performed using numerical strategies and
there is still a lack of knowledge regarding its structural response.
Consequently, the present thesis attempts to analyse these type of structures using the finite
element method, assessing its suitability and applicability to the superadobe. For this purpose,
several models of both walls and arches are studied, subjected to different load dispositions and
considering three construction types, plain, adding barbwire and stabilizing the infill.
Initially two possible constitutive models are considered, Mohr Coulomb and Total strain crack
based, and they are evaluated and compared in order to select the most suitable for all the cases
studied. Afterwards, all the analyses are performed and calibrated to match the results obtained
from the experimental campaigns developed in the University of Bath by Pelly (2009), Vagdama
(2010) and Croft (2011). Finally, a sensitivity analysis is also carried out to examine the influence
of certain parameters, which had to be adjusted during the analyses, into the structural response
of the models.

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
5
Numerical simulation strategies for superadobe walls and arches

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
6
Numerical simulation strategies for superadobe walls and arches

RESUMEN

El superadobe es una solución constructiva que consiste en la utilización de bolsas rellenas de
tierra apisonadas a las que se les añade alambre de espino entre ellas para aportar cohesión y
Resistencia a tracción al conjunto. Es una técnica simple, duradera, sostenible y asequible cuya
popularidad ha ido creciendo durante los últimos años. Además, recientemente se ha realizado
un notable esfuerzo con el fin de analizar el comportamiento estructural y determinar las
propiedades mecánicas del superadobe. No obstante, al tratarse de una técnica relativamente
nueva, no se han desarrollado aún estudios de estructuras completas utilizando estrategias
numéricas, y existe todavía una carencia de información en lo que respecta a la respuesta
estructural de estas construcciones.
Por consiguiente, la presente tesis tiene como objetivo el análisis de estas estructuras utilizando
el método de los elementos finitos, evaluando su compatibilidad y aplicabilidad al superadobe.
Con este fin, se estudian varios modelos, tanto de muros como de arcos, sujetos a diferentes
disposiciones de carga y considerando tres tipos de construcción, simple, añadiendo alambre de
espino y estabilizando el relleno de las bolsas.
Inicialmente se consideran dos posibles modelos constitutivos, Mohr Coulomb y Total strain crack
based, se evalúan y comparan a fin de seleccionar el que más se adecúa a todos los casos
estudiados. Posteriormente, se llevarán a cabo y calibrarán todos los análisis para hacer coincidir
los resultados con los obtenidos en las campañas experimentales desarrolladas en la
Universidad de Bath por Pelly (2009), Vagdama (2010) y Croft (2011). Finalmente, también se
realizará un estudio de sensibilidad para examinar la influencia de ciertos parámetros, que han
debido ser ajustados durante los análisis, en la respuesta estructural de los modelos.

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
7
Numerical simulation strategies for superadobe walls and arches

Erasmus Mundus Programme
ADVANCED MASTERS IN STRUCTURAL ANALYSIS OF MONUMENTS AND HISTORICAL
CONSTRUCTIONS
8