Study on Increase in Stability of Floating and Underground Extension Method through Slab Pre-Construction

Uiseok Kim, Byungchan Min, Junghoon Kim, Hangseok Choi and Sangwoo Park
Additional contact information
Uiseok Kim: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
Byungchan Min: Samho Engineering Corporation, Gwacheon 13814, Korea
Junghoon Kim: Samho Engineering Corporation, Gwacheon 13814, Korea
Hangseok Choi: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
Sangwoo Park: Department of Civil Engineering and Environmental Sciences, Korea Military Academy, Seoul 01805, Korea

Sustainability, 2021, vol. 13, issue 24, 1-22

Abstract: The development of underground spaces in urban areas plays a crucial role in the regeneration and sustainability of cities. However, the conventional underground excavation works in metropolises limit the use of the ground facilities owing to stability, noise, and vibration problems, which may cause huge economic damage. In this study, a method of pre-constructing slabs of underground facilities was analyzed to improve the stability of the floating and underground extension method, even during the use of the target building. First, a numerical simulation was conducted to compare the stability of the top-down method with slab pre-construction with that of the conventional top-down method. Then, the stability of the test bed was checked by applying this construction method to the field. As a result, the top-down method with slab pre-construction significantly improved the stability of the target building by preventing the buckling of the columns and supporting members. The increase in the displacement of existing columns and supporting members was controlled after the pre-construction of the slab. In addition, the crack width and ground settlement were stable within the management standards at the field. Thus, this construction method is expected to be crucial in pursuing urban regeneration and sustainability through the efficient development of underground spaces.

Keywords: urban regeneration; improvement of old facility; underground space excavation; floating and underground extension method; top-down method with slab pre-construction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/24/13696/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/24/13696/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2021:i:24:p:13696-:d:700269

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().