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| Kraft Energy™ has proudly been a part of several cutting-edge tunnel
and bridge projects that were breathtaking in technical complexity,
size and scope. |
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Precast Segmental Bridge Components
Project: Jamuna Multipurpose Bridge Project
Location: Tangail District of Bangladesh
Bridge: Bangabandhu Bridge (renamed)
Opened to Traffic: June 23, 1998
Management Company: Hyundai Engineering & Construction Co.
Ltd.
Facts of Interest:
- 11th longest bridge in the world
- Three mile crossing over Jamuna River
The precast, prestressed concrete segmental main
bridge deck was constructed of 13ft (4m) long cantilever segments,
approximately 65ft (20m) wide. The bridge deck is supported by 50
pier stems that rest on precast pilecaps that are supported by 121
steel piles, 272 ft (83m) in length.
The main deck carried
- Dual two-lane carriageway
- Dual gauge railway
- Natural gas pipeline
- Telecommunications and electrical cables
The internally prestressed segmental box sections are between 21ft
(6.5m) at the pier and 11ft (3.25m) high at mid-span.
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Kraft Energy™ created
a custom solution for this large and complex project. The precast
concrete main bridge deck segments were covered with motorized
curing tents and steam-cured. This process achieved high early
strengths and allowed for early demoulding.
Upon demoulding, the segments were moved to a storage yard to await
erection.
To cure the joint at the bridge’s mid-span, a VaporMini™ from
Kraft Energy™ provided on-site curing. The vapor was forced
through holes in the bridge deck to cure the joint from the inside
as well as outside.
(Many thanks to the Jamuna Multipurpose Bridge
Authority, 1998 and the Bangabandhu Bridge Website at http://www.citechco.net/jmba/jbhome.html) |
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