Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

Subsidence and sinkhole are one of important geological risk due to the collapse of underground cavities either natural cavities or due to the human activities (such as mines). The impact of the subsidence and sinkhole on the existing structures can be sever and dramatic. The prediction of the level of damage depends on the characteristics of the sinkhole and the characteristics of the structures. A large small-scale physical model is developed by the INERIS in order to improve the understanding of the behavior of individual masonry structures subjected to ground subsidence or the collapse of underground cavities. The masonry structure is simulated by using small pieces of wood or sugar pieces, the foundations by polycarbonate or silicon slab. The displacements and strains of the soil and the structure are measured using an imagery technique called DIC (Digital Image Correlation). The results highlighted the influence of the soil-structure interaction on the subsidence. The silicon slab is less stiff allowing more displacement transfer to the structure. The experimental study pointed out the advantages of using wood and sugar material to represent a masonry structure, the using of sugar and wood is easy to deal and economic compared to real large scale test. The study showed that the damage of the masonry structure depends on its position on the subsidence area and it’s stiffness. The experimental analysis has pointed out the importance of the soil/structure interaction.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 29th, 12:00 AM May 4th, 12:00 AM

Understanding Sinkhole Consequences on Masonry Structures Using Large Small-Scale Physical Modeling

Chicago, Illinois

Subsidence and sinkhole are one of important geological risk due to the collapse of underground cavities either natural cavities or due to the human activities (such as mines). The impact of the subsidence and sinkhole on the existing structures can be sever and dramatic. The prediction of the level of damage depends on the characteristics of the sinkhole and the characteristics of the structures. A large small-scale physical model is developed by the INERIS in order to improve the understanding of the behavior of individual masonry structures subjected to ground subsidence or the collapse of underground cavities. The masonry structure is simulated by using small pieces of wood or sugar pieces, the foundations by polycarbonate or silicon slab. The displacements and strains of the soil and the structure are measured using an imagery technique called DIC (Digital Image Correlation). The results highlighted the influence of the soil-structure interaction on the subsidence. The silicon slab is less stiff allowing more displacement transfer to the structure. The experimental study pointed out the advantages of using wood and sugar material to represent a masonry structure, the using of sugar and wood is easy to deal and economic compared to real large scale test. The study showed that the damage of the masonry structure depends on its position on the subsidence area and it’s stiffness. The experimental analysis has pointed out the importance of the soil/structure interaction.