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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 & M6 o5 P0 X( L+ r' e: Y, R, T

$ E: X! u4 h2 eTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.   
# I. C" ~/ f! Q' e6 z1 itvb now,tvbnow,bttvbAMAZING!

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Even after you see it, it is still hard to believe!

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4 ^' z( E+ z! B3 @: g5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.766 E' n, X+ n) v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ C1 j2 m4 E; V2 qIt is located in the city of Magdeburg, near Berlin.

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( l9 }; `4 h+ C" Q  R7 Z& yThe photo was taken on the day of inauguration.
: V9 q* }/ b9 q1 @1 ^" G# R1 Jtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。) l1 U4 T. [$ g8 a3 A
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Question:

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; p* o( _5 {4 o4 U) {Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,, L& ?. Z0 `& \7 A+ f$ n4 y# q
Or just the weight of the water? 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。) J( O1 ~. \+ g- Y0 y1 ^* r

5 _% M, u3 K2 V% [4 t5 I* q5.39.217.76Answer:

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4 I* q3 q9 U2 i0 a  P& {3 f. MIt only needs to be designed to withstand the weight of  the water!
; v$ Y* v0 s- KWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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公仔箱論壇/ c% A; @" L8 y3 \1 {
The Incredible Magdeburg Water Bridge in Germany
; o0 u7 [7 z1 D( q) N5.39.217.76The 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.tvb now,tvbnow,bttvb6 _' \7 R' V8 {
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. 公仔箱論壇& v% u" [7 V1 {  [$ U0 Z& M
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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.
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平壤核子能源研究所
這宏偉壯觀、傲視寰宇的工程傑作早在 1919 年工程師們即已提出
% s5 e  a( D# |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。連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.76& i5 c: o+ e! u$ l1 Q( p$ y
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。5.39.217.76* `) {2 o& V# S' N# D- z
隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。
# _5 V, |5 O% ^0 S# Btvb now,tvbnow,bttvb德國重新統一後,隨著道路交通重大工程規劃的編制,水橋再次成為一個優先專案。
! x! O# F- \( L  i2 X; V" h5.39.217.76於1997年開始建造,經過 6 年,耗資 5 億歐元,2.4 萬噸鋼材和 6.8 萬
( f8 e5 L) V0 c9 F立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。 公仔箱論壇: r  A+ z3 B- Q4 M% Z
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
6 w+ j" A% G$ Q+ Y5 V, V+ R公仔箱論壇易北河-哈威爾運河之間運行的船舶不得不繞道 12 公里通過。
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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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