NDLI: Behavior of Shallow Strip Footing on Twin Voids

Content Provider	Springer Nature Link
Author	Lavasan, Arash Alimardani Talsaz, Ali Ghazavi, Mahmoud Schanz, Tom
Copyright Year	2016
Abstract	This paper numerically examines the bearing capacity and failure mechanism of a shallow strip foundation constructed above twin voids. The voids may refer to caves, caverns, underground aqueduct or tunnels due to water seepage, chemical reaction or deliberately excavated in soil deposit. The ability of numerical model to accurately predict the system behavior is evaluated by performing verification analyses on existing researches. Subsequently, a parametric study carried out to reveal the influence of size of footing/voids and their location (i.e. depth, spacing, eccentricity) on the bearing capacity of footing. To clarify the failure mechanism, the distribution of shear strain in the soil for different scenarios is assessed. The parametric study provided a new framework to determine the bearing capacity and the mode of failure for footings on voids. Based on the results, a criterion can be issued to avoid collapse of footing/voids regarding the shape, location and size of voids. The results can also be used to design construction of a footing on existing voids while the acquired failure mechanisms can be appointed to develop analytical solutions for this problem. Results demonstrated that a critical depth for voids and a critical distance between them exist where the influence on the ultimate bearing capacity of footing disappears.
Starting Page	1791
Ending Page	1805
Page Count	15
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	34
Issue Number	6
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-02-11
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Strip footing Bearing capacity Underground voids Finite element method Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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