Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

Yong-dong highway that has an important role to connect between the west end and the east resort areas of South Korea was demolished at 205.4km from the west end due to an unexpected heavy rain whose intensity is 62.4mm/h on July 15th, 2006. Foundations of concrete retaining walls contact on Walljeong stream that has a steep bed slope and small water volume except a rainy season were scoured, and the concrete retaining walls were overturned. The water came into the embankment, and the westbound lanes of the highway were destroyed. The highway was blocked to traffic just before a big holiday season, and Korea Expressway Corporation (KEC), an agency of South Korea government, changed the flow line away from the embankment to protect it from scour, and dropped a lot of huge rocks whose diameters are over 1m to recover the demolished embankment. KEC finished the recovery works only for two days and reopen the highway. To prevent the highway from the pavement deformation and the future scour, grouting under pavement and rock-socketed concrete retaining wall with earth anchors without a foot were made for four months after the rapid recovery

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Aug 11th, 12:00 AM Aug 16th, 12:00 AM

Rapid Recovery of Demolished Young-Dong Highway 205.4km Due to Heavy Rain

Arlington, Virginia

Yong-dong highway that has an important role to connect between the west end and the east resort areas of South Korea was demolished at 205.4km from the west end due to an unexpected heavy rain whose intensity is 62.4mm/h on July 15th, 2006. Foundations of concrete retaining walls contact on Walljeong stream that has a steep bed slope and small water volume except a rainy season were scoured, and the concrete retaining walls were overturned. The water came into the embankment, and the westbound lanes of the highway were destroyed. The highway was blocked to traffic just before a big holiday season, and Korea Expressway Corporation (KEC), an agency of South Korea government, changed the flow line away from the embankment to protect it from scour, and dropped a lot of huge rocks whose diameters are over 1m to recover the demolished embankment. KEC finished the recovery works only for two days and reopen the highway. To prevent the highway from the pavement deformation and the future scour, grouting under pavement and rock-socketed concrete retaining wall with earth anchors without a foot were made for four months after the rapid recovery