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Design, construction and performance of single bore multiple anchored diaphragm wall in Turkey
Author(s) -
DÜZCEER Rasin,
GÖKALP Alp,
ADATEPE Şenol
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.709
Subject(s) - diaphragm (acoustics) , shoring , cofferdam , grout , geotechnical engineering , geology , excavation , structural engineering , engineering , loudspeaker , electrical engineering
This paper presents the design, construction and performance of an anchored diaphragm wall utilizing high capacity Single Bore Multiple Anchor (SBMA) technology which is a proprietary product of Kasktaş in Turkey to support one of the largest and deepest basement excavations in very soft soil conditions of Kağıthane region in İstanbul for the first time. A 60cm thick diaphragm wall, with a total depth of 20m, was designed incorporating one level of temporary ground anchors in order to perform the excavation in dry condition without causing any hazard to surrounding structures and roads, within a heavily urbanized location. Additionally, 7 rows of jet grout columns were executed in order to improve the soil at the toe of the diaphragm wall. Within the scope of the prestigious on‐going Ferko Line Project, a shoring system consisting of 12,500m 2 of diaphragm wall, 8,900m of Single Bore Multiple Anchor (SBMA) and 62,400m of jet grout columns and a piled‐raft foundation system consisting of 33,150m of 100cm bored piles socketed into rock by 5 m were completed.