標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。 n* s: [# u2 _5 J8 [
tvb now,tvbnow,bttvb8 }$ }1 ?4 \ i0 ~( W/ o/ {
If you are not a Physics person, read on and learn a fact of physics. + c1 {/ F( |/ p2 n8 G/ ]% KAMAZING! $ n% m7 h- }/ \" Y7 ?7 ~* F 8 @2 E: l/ l% f2 F4 N# Gtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!tvb now,tvbnow,bttvb% l/ B: a% b# R4 s: Z0 n T0 P [attach]1486499[/attach]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。. J9 J: V# P! y( f% ?* `0 V
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。 }! O6 w; x! ~0 P$ |" P6 K
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb* A4 D: |' {7 v( \! @- `* p# U* i
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇( ?+ t+ K, F2 b* H, Y4 d
It is located in the city of Magdeburg, near Berlin. 1 L2 T+ {5 w7 K- n6 W- J; G2 H公仔箱論壇 # Z; U- k; N- o' ~* R3 K4 dThe photo was taken on the day of inauguration. , ^4 T( f3 v6 P2 ~: f- i$ gTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.7 l& m4 m% P" A
公仔箱論壇/ V! x$ i# Z8 D9 v5 r4 V
Question:公仔箱論壇& H4 k6 L/ X- [; J
5.39.217.77:88987 m4 e& [! }) u* x! q. Z1 K
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb% e$ C$ O3 u9 C$ Y/ @ G! v1 _8 b
Or just the weight of the water? 1 k' O Y! J/ ]% r5 p0 q" a5 _4 u公仔箱論壇tvb now,tvbnow,bttvb! A0 K* c; Z, [; i1 ~
Answer: 9 a, k- Y0 |1 }5 z# F* ] " P9 Q3 w) K% l/ Y- gIt only needs to be designed to withstand the weight of the water! , `8 D8 M8 O8 ~* Rtvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded- \" }: M7 ]7 d. W" O a7 m; j- k3 I 3 m" k8 ]7 Y- \$ r
公仔箱論壇 z V8 V8 [/ f9 ]3 `, o The Incredible Magdeburg Water Bridge in Germany 7 n6 j+ D8 s6 M, _& u; Y+ x. x5.39.217.77:8898The 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.5.39.217.77:8898& W- B' g& S( m1 \ t
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 X7 ?" C+ e1 f5 X公仔箱論壇5.39.217.77:88982 a; i# \# D) k- h N- _
Construction 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. + }! Z& c" `/ b- w* D4 t; VTVBNOW 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。9 Y& p- W: l/ K7 m0 G8 H
+ r/ f8 P2 G# _$ u& r