bridge02_1_evolution and design practice in different countries
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bridgeTRANSCRIPT
Evolution of Bridges and Bridge Design Practice in
Different Countries
Nirjhar Dhang Department of Civil Engineering
Indian Institute of Technology Kharagpur August, 2014
Oresund Bridge 2000
The high bridge has the longest cable-stayed main span in the world for both road and rail traffic. Longest span : 490 m Total length : 7845 m Width : 23.5 m Clearance below : 57 m
Under construction is the highest bridge in the world. This bridge will be part of the A75 to link Paris with Barcelona.
This suspension bridge has a total length of 2.5 km and crosses the Tarn
River. It is 343 meters high, a world record. The road, with two lanes on each
side, will cross the river at 270 meters above ground. At its highest point, the
viaduct is even higher than the Eiffel Tower. Conceived by Norman Foster, this
suspension bridge is supported by seven pylons, instead of the two that are
common for this kind of construction.
Translated from Portuguese by Mark Harrison, Adelaide
It is formally inaugurated in December 2004, just 39 months after work began.
This is the only rotational boat transporter in the world. It has two arms and each arm forms a kind of huge tub filled with water. Boats enter the tub, then the tub locks up and the huge arm starts rotating .
The “tubs” are filled according the Archimedes’ Law. So the weight of “tubs” are balanced. To open the upper and lower lock and turn the whole system by 180◦ they need an engine of 22.5 kW which only use 1.5 kWh