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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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( T5 l. g4 W6 q5 Z! q; AIf you are not a Physics person, read on and learn a fact of physics.   
9 b% K, y$ L- T" k- ]! C3 a( zAMAZING!
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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。; I' @' D5 J% q9 Z! K3 i
Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 c# Q0 l, q6 X9 [8 m7 R8 j+ ZThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
1 p. K' W( n! {3 V3 ytvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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。/ j6 k) u3 K) j! r+ O0 G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 O2 `7 j) J4 q9 H; ZTVBNOW 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。Or just the weight of the water?
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Answer:

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It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb: h& X/ k( Y7 ]' _) U4 L( d
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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tvb now,tvbnow,bttvb; y+ `/ b; I" a. |4 x8 q5 F
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The Incredible Magdeburg Water Bridge in Germany5.39.217.77:88980 K2 d0 n6 ~. p: j  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.公仔箱論壇- N3 R! T2 Y2 l1 i( Q
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.
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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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: {) L) @) q% K# W0 M[attach]1486500[/attach]
" z& T6 m9 Q2 _- s7 L8 P[attach]1486501[/attach]5.39.217.77:88981 W2 n3 J% e5 N9 S
[attach]1486502[/attach]
' A3 b" m( r/ M) aTVBNOW 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。[attach]1486503[/attach]
5 W- l5 [* Q/ h4 }9 w* C" p- u[attach]1486504[/attach]5.39.217.77:88985 t1 h1 I6 D3 r8 D/ H, q; S7 o
[attach]1486505[/attach]
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: K( }( G7 A/ a+ r4 `1 @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。

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tvb now,tvbnow,bttvb) l& p& X( {2 {& s: M6 B
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。3 q3 E! X0 Y% }4 D+ A5 t; l
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb7 p8 B& w: |) H. s
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。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。6 E- Q( X$ y5 G
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。5.39.217.77:8898* V$ Q4 i* [+ m4 @. B/ v8 c
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 萬5.39.217.77:88989 P" G3 t/ ^6 T/ z3 N
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。
' G: ?- ^3 Q; ~& `0 X+ ~6 Ntvb now,tvbnow,bttvb2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇5 V- Z# |+ y7 V2 |* P) ]" q
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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