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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 & `- o0 b( y& k) U* _( V3 K

( P# |6 K+ ]- |5 f, JIf you are not a Physics person, read on and learn a fact of physics.   ) r) G% O' }5 \8 a8 Y
AMAZING!

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Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]tvb now,tvbnow,bttvb2 t9 U8 v0 A: I
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 E) t+ D" f) G" q; L; D
Magdeburg 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 i( o% U+ D# _. c
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
: p* c6 I) |5 g9 F7 SIt is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
; E: S8 x2 q/ a0 n: d$ W5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb  E! D6 D0 g. w+ }1 D

4 e6 p" c2 z& z& s5.39.217.77:8898Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇6 E- b% c6 E; D) s% p4 s* q. r
Or just the weight of the water?
1 [; K  `, Q% h* d/ ]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 L+ F2 Q7 F7 c2 ~
Answer:

/ @- h3 z+ @' v/ rTVBNOW 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。* |! A% |; j6 ~5 U6 A0 D9 w
It only needs to be designed to withstand the weight of  the water!
& i% N: }# c8 A' S4 H1 T% [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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' C7 N6 I+ m# {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。
The Incredible Magdeburg Water Bridge in Germany
0 k  ~( i. a6 b$ o6 a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. 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。! ^! i4 g- x$ i: a) \6 C% m

, {' }! P& I( Q& j6 e8 X7 AConstruction 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。& G+ S$ F. }" B
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7 ~1 g5 L0 v! |% S[attach]1486501[/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。6 e: E  [8 C& g+ Z3 X  G- S
[attach]1486502[/attach]5.39.217.77:8898/ D) [* Y4 I8 ~
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6 |1 k( J, {: b9 a: M4 i$ t[attach]1486504[/attach]: D. o  F/ z9 X0 ~
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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- f' i4 }' q) h( c9 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
4 j0 Z  E' q# P. \7 _' x8 ~公仔箱論壇也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
$ D) v, h$ ?7 [) k  Ftvb now,tvbnow,bttvb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# i5 J6 |1 G5 i# h
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 R( z4 J( r& D( I, u6 g; Z  J5 w# X5.39.217.77:8898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" X$ i* w# e+ W& \) n5 Y5 p. e0 W  u
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。 ' z/ [% I! {: r7 e! }( ^
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
& @: x' a9 |4 n8 x$ nTVBNOW 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。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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