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| Titel |
A Study on the Prediction of Damage Extent at the Time of Perforating
Operation on Reinforced Concrete Structure through Horizontal Excavation |
| VerfasserIn |
Ju-hyoung Lee, Hakman Kim, Jin Woo Cho |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250147485
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| Publikation (Nr.) |
 EGU/EGU2017-11654.pdf |
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| Zusammenfassung |
| When a building collapses in downtown due to a sudden external factor such as earthquake,
gas explosion or terror, the rescue of a survivor in the buried area should be prioritized. When
a collapse accident occurs in downtown, there is a difficulty of access to the surrounding area
of the collapsed building site due to building debris and a risk of the second collapse, and it
takes a lot of time to rescue any survivor in the top excavation method to rescue while
removing building debris. Therefore, there is a method to rescue any survivor safely by
installing the second lifeline after securing the first lifeline within 72 hours using inclined
excavation near the site of collapsed building or horizontal excavation at the underground
parking lot of an adjacent building and prolonging the life of any survivor. When
a building collapses in downtown, the perforating operation is carried out at the
existing structure in the process of establishing the first lifeline to the position of a
survivor through the parking lot of an adjacent building or the external wall of
the building, and the damage extent in case of carrying out such operation was
confirmed in this study. In order to determine the stability of the damaged existing
structure and the range of repair, the reinforced concrete wall was produced and
the damage extent of the reinforced concrete for each perforating position was
measured by installing a measuring instrument at a position separated by 150%∼200%
from the perforating position. As a result, it was shown that the average damage
area for each perforating position was influenced within approximately a 254%
radius.
Keywords: horizontal excavation, damage, reinforced roncrete, building collapses
Acknowledgement
This research was supported by a Grant from a Strategic Research Project (Horizontal
Drilling and Stabilization Technologies for Urban Search and Rescue (US&R)
Operation) funded by the Korea Institute of Civil Engineering and Building Technology. |
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