Evaluation of Seismic Performance of an Excavation Support System

2015 ◽  
pp. 141-148
Author(s):  
Omer F. Usluogullari ◽  
Yalcin Bulut ◽  
Ahmet Temugan
Keyword(s):  
Seismic Performance ◽  
Support System ◽  
Excavation Support

scholarly journals Alüviyal Ortamda Derin Kazı Problemi

2019 ◽  
Vol 2 (3) ◽  
pp. 1369-1376
Author(s):  
Aşkın Ozocak ◽  
Sedat Sert ◽  
Ertan Bol
Keyword(s):  
Support System ◽  
Deep Excavation ◽  
City Center ◽  
Short Term ◽  
Filling Phase ◽  
Eastern Border ◽  
Measured Deformation ◽  
Excavation Support ◽  
The City

The basement needs that emerged in the city centers have led to a more frequent encounter with deep excavation problems, which is one of the important issues of Geotechnical Engineering. This situation requires additional care and experience for soil and rock environments especially in deep excavations where different shear resistance parameters can be mobilized both in the short term and in the long term. In this paper, the stages of soil investigation, analysis, manufacturing and measured deformation were evaluated within the scope of the deep excavation planned and carried out in Adapazari city center. Following the excavation and filling phase at a depth of 4 m following the construction of the secant piles, the deformation readings were particularly noticeable on the eastern border. SAU Geotechnical Working Group conducted an investigation study to understand the causes of the incident and to take the necessary measures, if any. After the investigation, the reason of the deformations was estimated to be due to the sudden drainage of groundwater during the construction of the piles, and subsequent consolidation of the clayey layers beneath the existing 5-storey structure adjacent to it. The excavation has been successfully completed with the projected horizontal support system and it has been observed that the application of strut in the deep excavation support system creates practical difficulties especially in small parcels during the excavation phase.

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