Akademik Veri Yönetim Sistemi
14th INTERNATIONAL CONGRESS ON ADVANCES IN CIVIL ENGINEERING, İstanbul, Türkiye, 6 - 08 Eylül 2021, ss.10-20, (Tam Metin Bildiri)
In this study, numerical analyzes aiming the geotechnical modeling of the excavation support systems applied within the scope of the construction works of Hasdal Station which is the third station of Gayrettepe-Third Airport Metro Line, were performed. The support structures built within the construction works of Hasdal Station can be counted as pile inclusions, steel struts, prestressed anchors. A commercial two dimensional finite element program was used in the application of numerical analysis and four different main sections were identified to design the support system of the related station. 5 rows of steel supports to be used in and around the corner areas of the first section station; 14 rows of anchors to be created for TBM inputs at the starting and ending sections of the second section. Then the third and fourth sections are modeled for the steel support + anchored areas to be formed due to the conveyor transmission belt placement to be located at the station. As a result of numerical analysis, horizontal displacement limits were determined for each section type and instrumental observation. The results of instrumental observation reading transmitted from the field at certain intervals had been examined, it was seen that the readings were compatible with the horizontal displacement values obtained in the design. In this paper, data and evaluation opportunities are provided to guide the researchers in terms of the simultaneous application of modeling and instrumental observation techniques. Concurrently, Hasdal Station includes a construction process that will be exemplified by the support systems built in our country in terms of both design and construction applications huge volume. In this context, it is thought that the introduction of the related project will benefit geotechnical engineering case analysis studies.