| |||||||
Europe
North AmericaSouth AmericaAsiaAustralia and OceaniaAfrica |
Смотрите также: Tsing Ma Bridge The Tsing Ma Bridge is a bridge in Hong Kong. It is the world's seventh-longest span suspension bridge. The bridge was named after two of the islands at its ends, namely Tsing Yi and Ma Wan . It has two decks and carries both road and rail traffic, which also makes it the largest suspension bridge of this type. The span is the largest of all bridges in the world carrying rail traffic.
Tsing Ma Bridge Official name Tsing Ma Bridge Carries 6 lanes of roadway (upper), 2 MTR rail tracks, 2 lanes of roadway (lower) Crosses Ma Wan Channel Locale Ma Wan Island and Tsing Yi Island Design Double-decked suspension bridge Designer Mott MacDonald Width 41 metres (135 ft) Longest span 1,377 metres (4,518 ft) Vertical clearance 62 metres (203 ft) Opening date April 27, 1997
History Construction of the bridge was carried out by a Costain / Mitsui / Trafalgar House joint venture. Construction work of the bridge began in May 1992 and ended in May 1997. It cost HK$7.2 billion. The Lantau Link, of which the bridge is an integral part, was opened on April 27, 1997. The ceremony was inaugurated by the former British Prime Minister Margaret Thatcher.
Test The objectives of the wind tunnel studies were to demonstrate the safety of the structure under construction and once completed, both with respect to aerodynamic stability as well as the possible effects of extreme typhoon wind speeds. A further objective was to provide dynamic response data at several key locations to compare with full scale data from the ongoing monitoring program, conducted by the Highways Department of Hong Kong.
A 1 to 80 scale section model of the deck in the erection stage, and a 1 to 400 scale full aeroelastic model of the entire bridge were constructed. It is a Monte-Carlo simulation of the typhoon wind climate.
The full model was tested in different stages of construction in turbulent boundary layer flow, complete with the local topography in order to model the wind conditions at the site. The model tests identified critical stages of erection that allowed the construction schedule of the bridge to be tailored to avoid the typhoon season. The comparison of model test results and the full scale monitoring will assist engineers to better understand the behaviour of long span bridges in wind and to improve current design methods. Comments: 2 2.Posted by alsanupat@yahoo.com (quote name) 14 ноября 2012 - 13:07 I worked in the project erection yard and also fabrication yard in China. excellent project world biggest suspended bridge. I know each steeel componnent, bolts in the bridge. Climbing to top of towers daily & cross the sea to reach other end where the drawing office , record room etc situated. very hard time but we enjoy today remembering the construction. sad about the guys who died after fallen down from the Tsying yi approach as the fail to clip the safety belts and not followed the strict safety reg. Thanks to the people in Hong Kong Now I am 54yrs God bless |
|
|||||
Search
