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A platform for research: civil engineering, architecture and urbanism
An Experimental Study on Staged Excavation Supported by Contiguous Pile Wall
https://orcid.org/http://orcid.org/0000-0003-0407-7876
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The present study aims to quantify the engineering behavior of contiguous pile walls retaining sandy backfill supporting strip loading at different footing offsets and depths through scaled-down physical model testing. The response of the wall was quantified using normalized bending moment and lateral displacement of the top of the wall. Three configurations of well-instrumented and calibrated model pile walls were installed to support backfill with different relative densities subjected to near footing loading and far footing loading. The field possibilities of unembedded and embedded surcharge footing were also modeled under variable loading intensity based on different factors of safety. The response of the model wall clearly indicates the loss of passive resistance over the wall due to an increase in excavation. This can be seen from the increase in lateral displacements and bending moments of the wall with a downward shift in the position of the maximum bending moment. The unembedded footing is comparatively detrimental to the stability of the wall as the influence region intersects the wall along the active region without providing any passive confinement of soil causing significant lateral displacement. The stiffer configuration of the pile wall shows the least deflection even for a high magnitude of surcharge loading. The position of the footing in terms of depth and distance from the pile wall is an important factor.
An Experimental Study on Staged Excavation Supported by Contiguous Pile Wall
https://orcid.org/http://orcid.org/0000-0003-0407-7876
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The present study aims to quantify the engineering behavior of contiguous pile walls retaining sandy backfill supporting strip loading at different footing offsets and depths through scaled-down physical model testing. The response of the wall was quantified using normalized bending moment and lateral displacement of the top of the wall. Three configurations of well-instrumented and calibrated model pile walls were installed to support backfill with different relative densities subjected to near footing loading and far footing loading. The field possibilities of unembedded and embedded surcharge footing were also modeled under variable loading intensity based on different factors of safety. The response of the model wall clearly indicates the loss of passive resistance over the wall due to an increase in excavation. This can be seen from the increase in lateral displacements and bending moments of the wall with a downward shift in the position of the maximum bending moment. The unembedded footing is comparatively detrimental to the stability of the wall as the influence region intersects the wall along the active region without providing any passive confinement of soil causing significant lateral displacement. The stiffer configuration of the pile wall shows the least deflection even for a high magnitude of surcharge loading. The position of the footing in terms of depth and distance from the pile wall is an important factor.
An Experimental Study on Staged Excavation Supported by Contiguous Pile Wall
https://orcid.org/http://orcid.org/0000-0003-0407-7876
https://orcid.org/http://orcid.org/0000-0002-6730-4311
The present study aims to quantify the engineering behavior of contiguous pile walls retaining sandy backfill supporting strip loading at different footing offsets and depths through scaled-down physical model testing. The response of the wall was quantified using normalized bending moment and lateral displacement of the top of the wall. Three configurations of well-instrumented and calibrated model pile walls were installed to support backfill with different relative densities subjected to near footing loading and far footing loading. The field possibilities of unembedded and embedded surcharge footing were also modeled under variable loading intensity based on different factors of safety. The response of the model wall clearly indicates the loss of passive resistance over the wall due to an increase in excavation. This can be seen from the increase in lateral displacements and bending moments of the wall with a downward shift in the position of the maximum bending moment. The unembedded footing is comparatively detrimental to the stability of the wall as the influence region intersects the wall along the active region without providing any passive confinement of soil causing significant lateral displacement. The stiffer configuration of the pile wall shows the least deflection even for a high magnitude of surcharge loading. The position of the footing in terms of depth and distance from the pile wall is an important factor.
An Experimental Study on Staged Excavation Supported by Contiguous Pile Wall
Indian Geotech J
Mishra, Aradhana (author) / Sawant, Vishwas A. (author)
Indian Geotechnical Journal ; 54 ; 1690-1702
2024-08-01
13 pages
Article (Journal)
Electronic Resource
English
An Experimental Study on Staged Excavation Supported by Contiguous Pile Wall
| Springer Verlag | 2024
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