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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 ' i+ V7 @3 k1 M. F
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If you are not a Physics person, read on and learn a fact of physics.   / Y" P6 [; u$ _/ T
AMAZING!
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。0 W9 U4 k( j$ l

( r" B5 q1 m/ I6 e1 ltvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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# x$ Z) A4 V0 M7 zMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb: t* r8 {; T9 j+ x2 b& Q  J7 S0 ]
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 T( C' z% C' @% u8 ltvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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! Y# f8 w0 l/ _4 XThe photo was taken on the day of inauguration.5.39.217.77:8898' c6 }5 }+ {  n) Y5 }# H, J: @, P
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5 e& J* ~- o/ U
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Question:

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; h7 e( W  v6 W5.39.217.77:8898Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 o9 g. Z) O9 K" M& l0 MTVBNOW 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:

5 t$ w- |3 x0 cTVBNOW 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 r9 y7 l( _7 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。It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb; v. u- V/ \+ Q. h2 F$ x
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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The Incredible Magdeburg Water Bridge in Germany
- l3 |0 ?4 l! M$ v# N% c公仔箱論壇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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$ m( Q8 |: {  u, ~% I6 j, [& _5.39.217.77:8898[attach]1486500[/attach]5.39.217.77:88984 l# W) {/ _1 t2 x3 q2 S7 l0 P0 d7 r
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5 ^6 d. l' A- N! rtvb now,tvbnow,bttvb[attach]1486502[/attach]' s% v. m5 b" H/ A
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/ h/ L$ O! H+ p+ I  M8 j5.39.217.77:8898[attach]1486504[/attach]
, X6 n0 L8 W# O' V$ i- e[attach]1486505[/attach]
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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。1 ]& N* f4 {4 x6 O' Q
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8 Q1 {$ ?. D& s0 E8 t2 ?. \
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
- v- i( Z6 C0 L/ P! 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。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。
: s& Z/ T2 ^" V$ \$ Q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。
6 \6 `- l* N* q; E6 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。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8 H1 b- N: _  X( _  j0 Q3 H
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。
+ @: ]. f1 p1 ~. J7 k$ {8 M4 C1 G8 g: |tvb 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
: M1 K1 P" [; _8 I9 itvb now,tvbnow,bttvb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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