Study on Increase in Stability of Floating and Underground Extension Method through Slab Pre-Construction
| Autor: | Uiseok Kim, Byungchan Min, Junghoon Kim, Hangseok Choi, Sangwoo Park |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
urban regeneration
Environmental effects of industries and plants Renewable Energy Sustainability and the Environment improvement of old facility underground space excavation floating and underground extension method top-down method with slab pre-construction Geography Planning and Development TJ807-830 Management Monitoring Policy and Law TD194-195 Renewable energy sources Environmental sciences GE1-350 |
| Zdroj: | Sustainability; Volume 13; Issue 24; Pages: 13696 Sustainability, Vol 13, Iss 13696, p 13696 (2021) |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su132413696 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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