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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 3 [1 v. u$ T  G0 n7 N8 R
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If you are not a Physics person, read on and learn a fact of physics.   
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Even after you see it, it is still hard to believe!

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: C; J% B+ Z7 z# U0 d2 ]- x+ O+ YMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
( Q6 L. J7 D6 K) ptvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88986 d2 X* V. _; z1 V; Y$ ~1 v5 `
It is located in the city of Magdeburg, near Berlin.
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  k5 T% m7 @; j- j( q2 TTVBNOW 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.
+ ]# G4 R: X6 n) _3 M! C2 t5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
  w; K  }8 p2 E+ [& wTVBNOW 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。tvb now,tvbnow,bttvb2 ^  |! U6 {5 L/ m$ m$ V5 ?
Question:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,) ?3 v2 E7 k9 ^% i+ |
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。; `: H5 b# V4 v+ {
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Answer:
公仔箱論壇- p) I5 U6 A( N0 c% W9 `0 e; t

! E4 H$ g' V# Z4 ?/ ?/ iIt only needs to be designed to withstand 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。. b7 @' N; H4 R8 d& g4 _
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

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1 G2 ?# ]2 b. U* x. J) i公仔箱論壇

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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇, ?9 ?6 e' D: y4 W# \; F& V4 \3 D
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.! \3 Y$ D+ v" ]; p0 w# ^' z* L4 o+ L$ I
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. . r7 L& p, _/ ]2 z4 D1 _

; E$ d: n) B6 I1 U/ uConstruction 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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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' O. c6 n* [# M7 w
[attach]1486500[/attach]
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6 O! I" Y- y3 R- n9 O7 O公仔箱論壇[attach]1486503[/attach]5.39.217.77:88988 {+ O: |) p7 H% R1 f$ z) B. |! u
[attach]1486504[/attach]公仔箱論壇% S5 ]1 n0 U( A) I
[attach]1486505[/attach]
, i% c3 w3 ]7 n; oTVBNOW 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。
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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
* J/ L3 ^+ C9 c* A5 z5 c5.39.217.77:8898連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇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。2 x" [: N% a3 ?- g! c" \) S
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。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。; W* z2 y8 `' W! z$ f. L. p
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。公仔箱論壇6 a8 M3 c/ `% R
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。
5 f: Z+ V# Z! \) l, H6 j, T% X; ~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 萬公仔箱論壇0 }7 q( S* o, 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* \4 ^( ?5 _  i( Q  {( p5 b6 |# S
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
7 |3 s) e6 {8 A" I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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