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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
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If you are not a Physics person, read on and learn a fact of physics.   " T" I8 G  R& B
AMAZING!
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Even after you see it, it is still hard to believe!
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( T" n  V" s9 o9 U% D! X1 h5.39.217.77:8898Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇5 d9 |1 U; t: X* H3 u
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:8898. d8 s1 L+ h2 h( t: k% E6 f, b
It is located in the city of Magdeburg, near Berlin.
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3 O% ]4 X- ?8 H% O& X3 `+ W% b  `公仔箱論壇The photo was taken on the day of inauguration.
: Z8 E) X5 d/ M8 m# F) o公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
2 l; L$ M; x( p! O% STVBNOW 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。4 r& @% X2 l2 ~: j" q* \1 Q
Question:
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。" y/ d( i% ]7 d6 _( B% c

" e4 E' v% e  \# vDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ Y8 Y9 }* F% l/ i; ?4 {( F5.39.217.77:8898Or just the weight of the water? tvb now,tvbnow,bttvb: }: f) g& o/ Y8 u" d5 }5 R

. B2 y8 X4 a( P& e" m/ N4 i公仔箱論壇Answer:
tvb now,tvbnow,bttvb& J. ~* ]6 a8 N# T, i
tvb now,tvbnow,bttvb7 p5 ^! J, r0 V
It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb$ P8 z- t- q1 z7 i8 w! Z
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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。! O+ Z7 ?0 K4 l( U; o3 Q
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The Incredible Magdeburg Water Bridge in Germany
% s. O" o! Z# X! e& HThe 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.
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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 K  O! |7 Y3 j7 J

/ d/ e) {+ |+ VConstruction 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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$ P' k+ E4 i# V$ _$ I* Q公仔箱論壇$ ^  p- h, i. p
[attach]1486500[/attach]
$ j" Z5 [) f# [& k5 s; b; h: C[attach]1486501[/attach]! }" e2 ^$ Y& I; [% N2 R
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作者: busyfun    時間: 2011-10-4 11:33 AM

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5.39.217.77:8898+ d) F4 N# B+ h( e; E
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇( a. g  ~. _' ~* ?, N/ c
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
* Y" K$ X, o) a4 z# C7 }% x5.39.217.77:8898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。
9 g0 j8 Q' S& m1 O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。
+ {  u3 C( p5 D% r. @tvb now,tvbnow,bttvb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
. e- Y7 ^- I% R' M. p& P% C  o( y公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
/ }/ ?2 r% d$ _! J2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
; e4 P; A# N# a/ t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。
作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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