0
  • DE
  • EN
  • FR
  • International Database and Gallery of Structures

Advertisement

The Story of the Koror Bridge

The Story of the Koror Bridge
Author(s):
International Association for Bridge and Structural Engineering (IABSE), Zurich, Switzerland, 2014, pp. 112, (No. 1)
ISBN-13: 978-3-85748-136-9 DOI: 10.2749/cs001
Price: € 49.00 incl. VAT for PDF document  
ADD TO CART
Download preview file (PDF) 1.24 MB

Koror Babeldaob Bridge, also called Koror Babelthuap Bridge or simply Koror Bridge, connects the islands of Koror and Babeldaob in the Republic of Palau. The design of the bridge began in 1974 and ...
Read more

Bibliographic Details

Author(s):
Medium: book
Language(s): English
ISBN-13: 978-3-85748-136-9
Publisher: International Association for Bridge and Structural Engineering (IABSE)
Published in: Zurich, Switzerland
Page(s): 112 Total no. of pages: 111
Page(s): 112
Total no. of pages: 111
Year: 2014
DOI: 10.2749/cs001
Series: (No. 1)
Cover: soft-cover (paper binding)
Notes:

Koror Babeldaob Bridge, also called Koror Babelthuap Bridge or simply Koror Bridge, connects the islands of Koror and Babeldaob in the Republic of Palau. The design of the bridge began in 1974 and was based on the prevailing AASHO Standard Specifications at that time and was supplemented by ACI and CEB-FIP design recommendations on an as-needed basis. When the Koror Bridge was opened to traffic in April 1977, it was the world's longest concrete girder span. A few years later, the bridge began to deflect more than had been anticipated. The owner commissioned a Japanese engineering firm in 1985 and then a US engineering firm in 1993 to conduct in-depth investigations of the structure. Both firms came to the same conclusion that the bridge was structurally safe and that the excessive deflection was an unexplainable phenomenon. Nevertheless, in order to improve the driving quality of the bridge deck, the owner decided to repair the bridge. The repair scheme made changes to the structural system and added a large amount of post-tensioning force to the bridge. Unfortunately, less than three months after the repair, late in the afternoon on 26 September 1996, nineteen and a half years after it was opened to traffic, the bridge collapsed. Thereafter, most of the documents were sealed as a result of litigation between the various parties and the debris was cleared. For a long time, it was impossible to study the facts surrounding the bridge's collapse. Only recently, through continuous probing by a group of engineers, were these documents made accessible to researchers.

Purchase from:

Structures and Projects