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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 Y3 ~! Q; W; o5 T- a

) M6 w/ y+ |7 ~. s( q4 Z) iTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.   
! V0 ^  v4 R% B. u" |tvb now,tvbnow,bttvbAMAZING!

5 y2 b1 S* n# K# d/ u1 y3 B5 _/ x3 M公仔箱論壇
) F( n' J- w2 W+ x公仔箱論壇Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]% u/ i) ~& G  ]! i( a5 O

1 \, }7 |# n& V! T/ F9 v公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb" x+ B, X+ E( p4 S9 s: H3 U  [
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88980 c( C( ?5 H8 S7 ~8 ?
It is located in the city of Magdeburg, near Berlin.
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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。2 `& f; J9 O) n9 W# B
The photo was taken on the day of inauguration.公仔箱論壇* z# n9 B1 ?, \) `- S
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇& ?" W, }; O2 P

; v, ]: X* A" E4 y, t7 ?Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,$ @9 j9 ^0 N5 ^7 @
Or just the weight of the water? * s3 z/ V2 W- {& n

+ A  W, m0 W. L4 w9 R" YAnswer:

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! [: e8 d0 U# H/ {6 e" k公仔箱論壇It only needs to be designed to withstand the weight of  the water! 5.39.217.77:8898  y9 f6 p( I' f. C, M# ^% A
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 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。- l4 D3 ~! Q! B, ~& q9 n: y5 m7 J
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.tvb now,tvbnow,bttvb! Y9 `3 D5 R; g% N
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.
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。$ V3 J$ \  J' ?  W1 ?

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[attach]1486500[/attach]
" m- J, ~# H- ytvb now,tvbnow,bttvb[attach]1486501[/attach]
5 Q8 V" z) K/ `* g  T, }+ P[attach]1486502[/attach]
1 ~: P' ?1 ?; a4 Y) {3 ~5.39.217.77:8898[attach]1486503[/attach]5.39.217.77:8898* k& C. q! ]- d' [6 ?9 c  @0 q
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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公仔箱論壇! J" g, m* Z  L
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
' ?; Y' ^9 C9 P! ?' x  C5.39.217.77:8898也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
/ q' C0 R/ ~. X! L' f公仔箱論壇隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。5.39.217.77:8898) S" k6 Q& x. G7 P+ O
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。
7 p( x- D* J1 w1 d4 `& b公仔箱論壇於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 萬5.39.217.77:8898" ^$ L+ v: d5 H, Q1 ^
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。 5.39.217.77:8898' G* t6 |8 X+ @  F  Z
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
* M7 z# @7 L7 t; 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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