Location
Chicago, Illinois
Date
02 May 2013, 4:00 pm - 6:00 pm
Abstract
TOOBA deep excavation project was conducted in a densely developed area in the North West of Tehran, capital of Iran, to provide space for 4 basement levels for multiple buildings around the already functional TOOBA tower. TOOBA tower is located in the northern leg of the excavation boundary in a way that the northern side of the building abuts the excavation edge. Hence, this project involved excavation on 3 sides of the roughly rectangular plan of TOOBA tower to the depth of 16.5 meters below its foundation level. The necessity for constraining the deformations of the tower commended the construction of contiguous bored concrete piles around the building supported at 4 different levels with tieback and wailing system. A monitoring program for measuring the deformations of the tower and supporting system was also enforced during and after excavation. The three-dimensional nature of the retaining structure required careful design and construction procedure to avoid problems such as the intersection of the anchors. Each tieback was given a unique direction which was defined by 3 angles relative to the local x, y and z axes. Therefore, complicated forces were exerted on the wailing system and piles. The excavation procedure was ensued with no excessive deformations occurring in the building during or after the excavation. This paper considers some of the design and construction aspects of this successfully completed project.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Haeri, S. Mohsen; Sasar, Mohammadhasan; and Afshari, Kioumars, "Deep Excavation on 3 Sides of a 21 Story Building: Accounts of a Successful Deep Excavation Project" (2013). International Conference on Case Histories in Geotechnical Engineering. 44.
https://scholarsmine.mst.edu/icchge/7icchge/session03/44
Deep Excavation on 3 Sides of a 21 Story Building: Accounts of a Successful Deep Excavation Project
Chicago, Illinois
TOOBA deep excavation project was conducted in a densely developed area in the North West of Tehran, capital of Iran, to provide space for 4 basement levels for multiple buildings around the already functional TOOBA tower. TOOBA tower is located in the northern leg of the excavation boundary in a way that the northern side of the building abuts the excavation edge. Hence, this project involved excavation on 3 sides of the roughly rectangular plan of TOOBA tower to the depth of 16.5 meters below its foundation level. The necessity for constraining the deformations of the tower commended the construction of contiguous bored concrete piles around the building supported at 4 different levels with tieback and wailing system. A monitoring program for measuring the deformations of the tower and supporting system was also enforced during and after excavation. The three-dimensional nature of the retaining structure required careful design and construction procedure to avoid problems such as the intersection of the anchors. Each tieback was given a unique direction which was defined by 3 angles relative to the local x, y and z axes. Therefore, complicated forces were exerted on the wailing system and piles. The excavation procedure was ensued with no excessive deformations occurring in the building during or after the excavation. This paper considers some of the design and construction aspects of this successfully completed project.
