EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76. R- x6 F8 O" n! h/ @8 I0 X
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If you are not a Physics person, read on and learn a fact of physics.
7 A4 d! J P# w1 ~6 l+ |( i2 |6 G公仔箱論壇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。! j- c1 V# y t5 s
2 G, L& b' K3 {7 z# @! e' @5.39.217.76Even after you see it, it is still hard to believe!
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& t. h! I3 M- j: _- P+ I- V9 DMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! p2 v4 E2 q( {' l$ s" {
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# @( G( B0 a M5 K( j. GIt is located in the city of Magdeburg, near Berlin.2 V- H8 b/ m5 {* R# C6 T5 f# C2 u
& S u- u4 q/ Y* {: v: u5.39.217.76The photo was taken on the day of inauguration.
$ k8 I" T$ B3 j公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
& F% m4 U' V* G6 {' m8 ytvb now,tvbnow,bttvbTVBNOW 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。) K: n! p0 A) _7 i; k3 C
Question:
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9 S' @3 Z2 h% s" B# [8 d- l: ^) PDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb: a( y4 v( m9 H8 o! n* d. M4 F
Or just the weight of the water? 5.39.217.76% V6 Z; ^# u+ H2 f' r1 I
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Answer:3 {: L! y, S2 i$ I1 x# M8 m2 e
* {2 L k) I; |! v4 ?3 h( GIt only needs to be designed to withstand the weight of the water!
1 G6 x8 d4 \6 i2 x6 P- ~* l: e公仔箱論壇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
2 ]4 |% [# P ?9 G% z/ ^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.
3 h( d9 X Q) ZThe 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。! A9 g+ M) g/ H
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& [+ I: z. R6 G* g( K9 K/ STVBNOW 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。
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