Hoover dam bypass_bridge2

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Hoover dam bypass_bridge2

  1. 1. New Hoover Dam Bridge Between Nevada and Arizona
  2. 2. Hoover Dam Picture Title Click
  3. 3. Nevada Hoover Dam California Click Picture Title Click
  4. 4. Hoover Dam Hoover Dam Bridge Picture Title Click
  5. 5. Nevada State line Time zone line Arizona Hoover Dam Hoover Dam Bridge Picture Title Click
  6. 6. New method to build a reinforced concrete bridge without the conventional temporary shoring
  7. 7. The suspension cables for temporary support
  8. 8. suspension cable
  9. 9. High line cable conveyor Reusable metal sliding formwork
  10. 10. Suspension cables temporary support System
  11. 11. The concrete Arch designed for carrying the temporary and permanent load
  12. 12. Conventional scaffold system, too expense ! !
  13. 13. Steel strut Reinforced concrete twin Arch connected by steel struts
  14. 14. Steel Box Girders and concrete roadway deck
  15. 15. Colorado River
  16. 16. Lower twin arch was completed
  17. 17. Cut off the suspension cables, when concrete up to it’s strength
  18. 18. Reusable metal sliding formwork for reinforced concrete columns
  19. 19. The upper deck columns, build on the top of the lower twin arch
  20. 20. Steel Box Girders
  21. 21. Prestressed concrete and steel box composited Girders
  22. 22. Hoover Dam Bridge over Colorado River
  23. 23. Hoover Dam Bypass Bridge Opening date : Oct. 19, 2010
  24. 24. The center line of Colorado River and Hoover Dam Bridge was State Line of Nevada and Arizona, and also a Time Zone divided line of Pacific and Mountain Time, If drive from west to the east, when you pass the bridge, you will enter Arizona and gain one extra hour. Click
  25. 25. Name of the Bridge • In the beginning called : Hoover now the official name was : Dam Bypass Bridge • Mike O’Callaghan – Tillman Killey Memorial Bridge Mike O'Callaghan – Joined the Marines at sixteen, 1952 he lost part of his left leg in the battle of Korean War, 1971 to 1979 was Governor of Nevada, later he was the Executive Editor at the Las Vegas Sun newspaper, he died on March 5, 2004. • Tillman Killey – Arizona famous NFL football player, he gave up his well paid job and joined the army, he died by a friendly fire in Afghanistan on April 22, 2004. Click
  26. 26. Hoover Dam Bridge technical information • • • • • • • • • Designer : T. Y. Lin International ( 林同棪 ) 1988 finished the investigation and environmental report. The design work start in July 2001 & finish two years later. Bridge length : 1900 ft ( 580 m ). Arch span : 1060 ft ( 320 m ). Bridge width : Four lane highway. Bridge height : 840 ft ( 263 m ) , 2 nd height of U.S. Bridge away from Hoover Dam : 1600 ft ( 550 m). Construction began on Feb. 2005 and completion on Oct.2010. Construction cost : 114 million. This is the first Concrete-and-steel composite arch bridge built in United State. Pedestrian access is provided over the bridge for tourists. Click
  27. 27. Hoover Dam technical information • Hoover Dam was built after 1930 Great Depression, it was a project to increased job for American worker. • Type : Concrete gravity - arch dam • Top width : 45 ft ( 14 m), Base width : 660 ft ( 200 m) • Dam height : 726 ft ( 230 m), and 1245 ft (380 m) long • Construction begin at 1931 and finish at 1936 • Total cost : 49 million • Reservoir : 28,537,000 Acre ft (35,200 Kilo cubic meter) • Power annual generation : 4.2 Billion kwh • Worker : Hired 5500 construction workers, Chinese labor was forbidden by construction contract. • Hoover Dam was a tour spot, every year more than million of peoples visit there. Click

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