公仔箱論壇 - Powered by Discuz! Board

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 公仔箱論壇& I; P9 a: U( s& }! p8 y- G

If you are not a Physics person, read on and learn a fact of physics. 8 N* m/ t) k$ p6 v# _  o
AMAZING! 5.39.217.77:88984 O- v( A4 F/ C  ?! o) U

Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb; x& w, k$ ~: V! }' ?, q& d
[attach]1486499[/attach]! d, y  c, `5 u: Y  x7 F( z$ D

Magdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * q5 E" r+ i4 G" g4 S# Q$ O
It is located in the city of Magdeburg, near Berlin.
3 q! E) R( S4 N8 u4 ?# H$ d1 X
The photo was taken on the day of inauguration.+ n: ~- v  g% N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:8898* C$ ~& Y) ^8 g! t6 H0 v8 Y
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 C' A$ p* M6 b/ Z6 j5 ?
Question:tvb now,tvbnow,bttvb6 P2 D9 e6 \9 s, K+ z- I, u. e
7 \, r: D. B% B/ m* p3 [
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,, k/ N7 U2 c& ^6 Q. f0 f
Or just the weight of the water? / q+ ^5 C0 N* f+ H& s, k

Answer:

It only needs to be designed to withstand the weight of  the water!
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  x* m/ A9 b1 |* Z/ V# s
' l: n! |  Z4 w  c/ T( U* K

The Incredible Magdeburg Water Bridge in Germany9 u" x" |& X3 Z1 a* B
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.
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. tvb now,tvbnow,bttvb3 u& ^2 R. _# {/ V  f' B4 E

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. tvb now,tvbnow,bttvb) a, R3 g( `9 r  F* U  b

[attach]1486500[/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。" `1 @+ o1 x& ]0 W# a
[attach]1486501[/attach]tvb now,tvbnow,bttvb, A7 i) M. J0 D7 {+ C% ]8 f+ ]
[attach]1486502[/attach]
[attach]1486503[/attach]
[attach]1486504[/attach], Z4 @& C& |" S& Y/ y9 P
[attach]1486505[/attach]tvb now,tvbnow,bttvb6 N& F  V4 t& ~+ O
. R% T- X! b' P4 U6 ~: n2 I7 z

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
連通兩條水道的最初構思，而羅騰湖 Rothensee 升船機及大橋錨碇
也於 1938 年安裝就位，但在二次大戰期間，建設工程被推遲。
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。
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。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。9 n' d4 @7 F9 S
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

% ?/ S/ V9 V- c
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。
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5.39.217.77:88989 Q$ N+ @ o, H: x' x* U$ w
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

提示: 作者被禁止或刪除內容自動屏蔽

歡迎光臨公仔箱論壇 (http://5.39.217.77:8898/)