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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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6 V) F6 W! F2 B; Z1 y5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.   $ N( T' i  s6 W- c0 |/ z1 q0 S. u
AMAZING!

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0 ]& ~. ^8 j1 x' u4 Y- MEven after you see it, it is still hard to believe!
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[attach]1486499[/attach]
: d- q) h, z. J5.39.217.77:8898TVBNOW 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。) |0 w, o( R( [& F
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ w- \6 y& T& R4 a- m6 s$ 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. 5.39.217.77:88988 e# i# I) j! l$ D2 G" d
It is located in the city of Magdeburg, near Berlin.
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: b- J- I) E) o' e- |tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.公仔箱論壇9 a+ l% {  u  Y: o6 a' y
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88981 J2 s3 p2 F* L, z1 R

$ e: P8 Z) F; w5.39.217.77:8898Question:

8 a! n% [- w0 P% `- j4 s公仔箱論壇
' o+ x; }4 g) [- H4 l# |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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 o  W* O) R3 r+ L2 Z9 _/ `/ 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。Or just the weight of the water?
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Answer:
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. x- P3 \; W8 u$ \7 H8 D: sIt only needs to be designed to withstand the weight of  the water!
: b2 x/ n8 Q7 t) [. o" MWhy? 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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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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 S( Y0 @7 S% ?; t8 Y# h. o$ X
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.
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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.
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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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7 |" t$ M8 k' |9 otvb now,tvbnow,bttvb[attach]1486501[/attach]公仔箱論壇# C4 w1 ]7 s" ?* H! h) e+ E: J) O
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[attach]1486505[/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。' z* d8 D/ i% X
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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。. r9 [/ E8 V' u
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
( C) H- o  B: S8 K4 E也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。8 z7 M4 o" V- }: X
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。tvb now,tvbnow,bttvb" I6 s. O9 R: S1 j) C9 N
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。
. T7 C* X5 h: J- g/ ^4 ?( Utvb 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
( D3 @2 j6 }/ x: P6 s  ]) m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 ]0 T& d' u( h- r7 w* s/ j# e公仔箱論壇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
8 H# f5 U0 R; Q# u1 r, ?( a9 p8 Z5.39.217.77:8898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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