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 5.39.217.77& u2 ]3 r" X# z' |# ^
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If you are not a Physics person, read on and learn a fact of physics. _% i% i1 B& l. Y公仔箱論壇AMAZING! tvb now,tvbnow,bttvb4 L8 @% h; F. a" u# d# ` 公仔箱論壇/ ^. P% `5 w" Z+ @
Even after you see it, it is still hard to believe!1 g$ h& M. K2 I' ]; S! R3 Y [attach]1486499[/attach] 7 u; S) w/ x {% q5 j3 u; Ctvb now,tvbnow,bttvb 9 j. o7 h, `1 P+ ^ t6 ktvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇' ~! N/ N0 W# j/ ]' e/ j
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇$ I) K1 [6 q+ D$ w t* @! o# c
It is located in the city of Magdeburg, near Berlin.$ V7 X0 X5 P, n+ {/ {% o
' q3 S( v( G9 m/ R) \9 B5.39.217.77The photo was taken on the day of inauguration. : S; z6 V( P4 k! qTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇! ?. \8 M1 ~7 V) S, i7 _
7 v/ u, _9 o. y: {+ I% p5.39.217.77Question:公仔箱論壇# s& `6 V. m5 w
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, / z% m. g( ~+ y4 W% ~& u1 \, iOr just the weight of the water? + a# u8 P8 h( s7 UTVBNOW 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。" N! a/ \* ~9 f
Answer:2 t2 K9 r* U; J9 r: w5 l% F
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb; |$ ~4 M1 Z7 n( O1 V. p4 c
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公仔箱論壇# T I* N. E8 u! [4 o % ^- e0 s' l2 S" C/ i) w' r公仔箱論壇) a* L% d' |( D6 A1 K1 w The Incredible Magdeburg Water Bridge in Germany公仔箱論壇# W8 j6 ]4 T0 Q" b% t1 J5 p! t2 W
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; Y$ t. v. Z" ?+ b; n8 L
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. ; y. N* X% q1 t. q& ^7 U2 fTVBNOW 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。$ t8 }( }8 Q5 r: _
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. 3 E' _+ }6 E8 \% _; Q8 h5.39.217.77 2 v# n$ C! q6 z/ z8 t1 x) a% t% ^" btvb now,tvbnow,bttvb 0 w) M# T3 C% rtvb now,tvbnow,bttvb[attach]1486500[/attach] 2 Z8 m! p8 ?; e# V# q) n" b公仔箱論壇[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。8 S/ j2 ?) O9 j" V [attach]1486502[/attach]tvb now,tvbnow,bttvb' |) J& C4 j# g7 A- d. }/ Z! h [attach]1486503[/attach]/ W; k1 Q6 \% s: s$ ~6 }$ M [attach]1486504[/attach] 9 I' P" S% V" t' r C7 s公仔箱論壇[attach]1486505[/attach] " L$ \+ Y$ _( p! |5 D公仔箱論壇公仔箱論壇- x( W& v" N9 ~0 X& I 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7 e4 ^$ T j( T4 W* J
連通兩條水道的最初構思，而羅騰湖 Rothensee 升船機及大橋錨碇, `& ], C4 ]4 r$ ^. p3 {* S
也於 1938 年安裝就位，但在二次大戰期間，建設工程被推遲。0 Y, Z9 K6 }+ V$ J! h; `7 S- q$ v& y
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。5.39.217.778 Y$ @1 b: i* s3 g6 {3 ]5 U
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。 0 v4 n0 f7 c* g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 0 ]! x& |0 Y9 ~' T% Etvb now,tvbnow,bttvb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。 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。4 _* P) u, P9 {- n
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tvb now,tvbnow,bttvb, m" r5 G5 g {6 Y
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
