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 $ Y k$ o7 q# m! d/ t8 w; @, Y5.39.217.77:8898 . Q. q2 u8 o- j5 w8 L# ^ u1 |/ p- Ttvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. ' O: D+ b& P( O; x& V c4 q
AMAZING! tvb now,tvbnow,bttvb5 Q( i1 P `0 a8 E R! f* L# h ' p& T4 H) r( f: s' C0 L. e
Even after you see it, it is still hard to believe!5.39.217.77:88986 I/ V* b* ?) @ [attach]1486499[/attach]公仔箱論壇+ u/ O; d2 [" ]+ H) l, \+ F& Q8 ^
7 ?5 q2 x6 N1 V5 R: A+ ~tvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 3 l( d0 k6 q& H) c1 M8 i- y/ t! l
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. . P7 z8 t8 K$ @& A) I$ U8 }0 P8 p |公仔箱論壇It is located in the city of Magdeburg, near Berlin. + p" x9 B( A% S: u0 ~tvb now,tvbnow,bttvb - m9 |+ Z$ E6 Qtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.公仔箱論壇# R$ [$ F. ^3 ^3 A! N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇- z/ h) l, P8 A% N* B
公仔箱論壇2 `1 M' V) T4 \4 { l' h4 |9 X3 w
Question:tvb now,tvbnow,bttvb: F N6 h3 L) Y2 t! i" G
公仔箱論壇" X9 Z, ~5 S" A$ j, d
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 7 e- m4 Q7 \( 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。Or just the weight of the water? ! j% }3 D% | M4 Z: @' ?/ R$ W- U" h
Answer:. Z7 y+ i" D7 F' f8 E' F8 {5 U( v
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。- ~" t. i' k2 S6 z* n- i0 }
It only needs to be designed to withstand the weight of the water! 2 r3 w" s' [5 W, [9 Z* Y b
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& ^ E# t, K8 P& K2 D4 ] ) p: o3 V( [# A# f) DTVBNOW 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 `. ~9 U* z' y5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany 5 e. |: P* Q# K' D, @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( E" C7 J$ t9 E
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,bttvb& v1 [ A \3 Z
5.39.217.77:8898 B1 D* T9 _, m# e% c0 [% U. H
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" r+ ~0 D6 G4 ~3 {! A" B
- ^1 C% ]5 Y7 G4 j$ m+ O
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 z& Y: s. f. c& L" d& f& A! z