civil-engineering-2018-posters-abstracts

Page 48

JET 2018

ISSN: 2319-9873

I n t e r n a t i o n a l C o n f e r e n c e o n

Structural and Civil Engineering

Research

O c t o b e r 0 1 - 0 2 , 2 0 1 8

Am s t e r d a m , N e t h e r l a n d s

Civil Engineering 2018

tructures, in particular unreinforced masonry are critically susceptible to ground movements because of their low tensile

strength. Ground movements due to natural and man-made settlement, underground cavity collapse or mining/tunnelling

induce slight to severe damages on structures and infrastructures. The evaluation of the level of damage is still under research

investigation due to the complex phenomenon of soil structure interaction. Empirical approach is generally used to evaluate

the damage, but presents a serious limitation. This keynote lecture focuses on the use of advanced physical modelling (1-g

and n-g) and numerical modelling (continuous and discontinuous) to better evaluate the damage due to ground movement and

associated soil structure interaction. The presentation first addresses the effect (damages) of ground movement on structures

and infrastructures illustrated by in situ observations, then a large overview of the use of 1-g physical and numerical models to

solve geotechnical problems and soil structure interaction related to vertical ground movement will be made. The second part

of the presentation will focus on the illustration of the usefulness and the advantages of 1-g physical modelling to study the

masonry damage due to ground movement. A large scale 1-g physical model developed recently by Ineris with a 6 m3 container

and 15 electric jacks will be presented. Thanks to physicalnumerical modelling and in situ observation, a new methodology and

criterion were developed based on the local and global damage of the structure. The new equipment offers the possibility to study

different geotechnical and soilstructure problems. The model uses image correlation technique to evaluate precisely the damage

of the structure. The model capacity is demonstrated in the case of the analysis of damage in a masonry structure (based on a

digital image correlation technique) where the influence of the position of the structure onto the subsidence through is analysed

in terms of cracks density and damage level of structures.

Physical and numerical modelling of soil

structure interaction and damage of structures

due to ground movements

AL Heib Mohamed Marwan

Institut National de l’Environnement Industriel et des Risques-Ecole des Mines de Nancy Campus

Artem, France

JET 2018 Volume: 7