concretesubmarine.com/ FORUM

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Floating Concrete Container Terminal at Valdez, Alaska


Guru

Status: Offline
Posts: 10314
Date:
Floating Concrete Container Terminal at Valdez, Alaska
Permalink   
 


Floating Concrete Container Terminal at Valdez, Alaska

 

The world's first floating prestressed concrete container dock, now in Valdez, Alaska, went into service late in 1982, less than a year after its keel was laid at Tacoma, Washington. The 700-foot-long dock was designed to provide year-round 24-hour-a-day cargo service to ships with up to 50,000-long-ton-capacity and barges up to 1500 tons. This type of concrete facility provides a high capacity marine terminal which requires only low maintenance, can be rapidly deployed, is suitable for deep water and poor soil conditions, is automatically self-adjusting to even the largest tide variations, and may be moved to another site should market conditions warrant it.

FLOTATION UNITS

Each of the two pontoon-like units consists of 16 watertight compartments, the walls of which are made of full-height precast concrete pieces weighing 45 to 55 tons each. The bottom slab of each compartment and the vertical joints between the wall pieces are cast-in-place. A total of 468 prestressed concrete deck panels span the 25-foot-wide compartments. These panels serve as formwork for the final 12-inch-thick cast-in-place concrete deck.

This first-of-a-kind project not only broke new ground but also set an example for successful new applications of existing technology. Distinguishing elements of the Valdez Dock project included: Innovative use of a combination of precast and cast-in-place concrete that simultaneously maximized economy, speed of construction and product quality; extension of precast concrete technology to an important new field; and extensive cooperation between the owner, precaster, general contractor and engineer to maintain a tight 10-month schedule.



__________________


Guru

Status: Offline
Posts: 10314
Date:
Permalink   
 

http://www.concreteconstruction.net/concrete-articles/floating-concrete-container-terminal-at-valdez-al.aspx



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.