Numerical modelling of masonry joints degradation in built tunnels

Old tunnels are generally supported by masonry structure. Nowadays, these constructions present many instability problems (cracks, collapses, convergence, etc.) due to aging phenomena on both blocks and mortars. After the analysis of blocks mechanical behaviour over time [Idris, J., Verdel, T., Al-H...

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Bibliographic Details
Published in:Tunnelling and underground space technology 2009-11, Vol.24 (6), p.617-626
Main Authors: Idris, Jamal, Al-Heib, Marwan, Verdel, Thierry
Format: Article
Language:English
Subjects:
Applied sciences
Building failures (cracks, physical changes, etc.)
Building structure
Buildings. Public works
Computation methods. Tables. Charts
Construction (buildings and works)
Durability. Pathology. Repairing. Maintenance
Earth Sciences
Environmental Sciences
Exact sciences and technology
Experimental design
Joints
Masonry
Masonry structure
Numerical modelling
Old tunnels
Sciences of the Universe
Structural analysis. Stresses
Tunnels, galleries
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Summary:Old tunnels are generally supported by masonry structure. Nowadays, these constructions present many instability problems (cracks, collapses, convergence, etc.) due to aging phenomena on both blocks and mortars. After the analysis of blocks mechanical behaviour over time [Idris, J., Verdel, T., Al-Heib, M., 2008a. Numerical modelling and mechanical behaviour analysis of ancient tunnel masonry structures. Tunnelling and Underground Space Technology 23, 251–263.], we try in this paper to simulate the evolution of masonry joints mechanical behaviour in built tunnels and to quantify the influence of their mechanical proprieties on the tunnel behaviour by the help of the experimental design method and distinct elements numerical modelling.
ISSN:0886-7798
1878-4364
DOI:10.1016/j.tust.2009.05.002