本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
0 t2 t- Q, j" J+ Y& Z( I& O3 I/ u1 g' F
If you are not a Physics person, read on and learn a fact of physics.
' i q, |6 a# _! G, G Q& zAMAZING!
& r/ ^7 W1 K- X# r& C8 Q6 z2 ~7 v, n
Even after you see it, it is still hard to believe!( s8 S$ | X) h8 j6 J
7 w# F* ~( ^- e) Q: Y
9 ?/ Q4 h8 u4 {3 }1 X* S0 f! `5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
R+ ^0 c# c- yThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
4 v0 w1 Y- E& z# JIt is located in the city of Magdeburg, near Berlin.公仔箱論壇# ^; d* `6 c( U8 |: D1 h. j9 H
2 Z: @/ {5 a, o) n% _4 M) CTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。The photo was taken on the day of inauguration.公仔箱論壇7 g- D/ n$ j; k8 y' U
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
- F' W8 n: y M6 T }! d5 N5.39.217.76# R) Q0 |0 `% M$ S' P
Question:! H) d1 s5 d! F1 r
# R3 m- U/ Z c6 |& j; C5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: d8 [. P) |8 w, D& r9 L9 {: y+ Ftvb now,tvbnow,bttvbOr just the weight of the water? 公仔箱論壇 m l/ U& }1 g* m* r2 a9 F
8 W0 _ n. L% [6 f9 P( Q2 \6 [公仔箱論壇Answer:
* S! p K. Q2 p2 L2 \* jtvb now,tvbnow,bttvb
9 f' C3 o! T Y8 @3 J& P% K4 BIt only needs to be designed to withstand the weight of the water!
# W4 l3 c$ ^$ ?: l- DWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
' u; k4 S/ ^8 E3 Gtvb now,tvbnow,bttvb/ V" K* [) u" y7 A
( t& V; G X4 e5 G8 l+ O; p公仔箱論壇The Incredible Magdeburg Water Bridge in Germany8 K; N* i7 u+ D' i7 v' a' O
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world.5.39.217.76: T$ e3 K. s; b. P9 |
The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo.
" {2 q' ~2 L( ]$ i3 }5.39.217.76
7 Q7 J3 q2 ], g N6 c5 r) N1 pConstruction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.
3 }1 v, z( {2 b1 j- x# Jtvb now,tvbnow,bttvb公仔箱論壇2 c+ b" p6 k, u2 h \" i
公仔箱論壇: `+ ^8 d! N! K3 Y/ t! Y" \
TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。1 a. f" G# k# S1 o4 i
5.39.217.76! M- [* }9 J# T9 S+ A9 b; U
( N" F# l- O: {0 h
$ e5 v4 ^! x! o2 [* Z
5 _) ]$ M& j8 w公仔箱論壇
$ v- R- T2 X( q f5.39.217.76
' W0 \# }4 ]4 V: v$ Q; r5.39.217.76 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|