本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 _% @1 J* W& \- j1 x
) F9 ^- c( M5 ?+ }- i9 R公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
- {* F- X% `1 `5.39.217.76AMAZING! 公仔箱論壇5 y, x9 W: c( z5 a+ b; u2 `
5.39.217.76: d* o6 H+ |, b j' O
Even after you see it, it is still hard to believe!
0 M) N1 j: _0 i3 s, A! {5.39.217.765 T" W) }8 K, \: j. N
E2 R1 K, g) }5 N2 I- T7 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
" n& y8 q3 \9 D6 [5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& b4 M: y( u& C# btvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
! I, K. J, a# J0 o3 h1 B. t/ _5 D5.39.217.760 r7 r) A c! k, t( G y. F5 h u Y+ M* V
The photo was taken on the day of inauguration.
! ~5 A0 j( W) X8 E) r0 iTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
Y2 K3 q) I9 T/ @' E2 u+ r$ A* Y0 y" h
Question:
# l8 j- l' G3 F+ `5.39.217.765.39.217.76- k7 h+ K" j8 o
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 \+ u1 z3 Q; Q8 k* JOr just the weight of the water? 公仔箱論壇6 q/ E7 n4 L9 v- @3 K
/ [5 u! N1 g6 X( v. a
Answer:
: m. J2 L+ p% E$ E9 a! T7 |! x1 r/ Z9 `" i8 e
It only needs to be designed to withstand the weight of the water! 公仔箱論壇: J J! W: s! B' k8 r, F0 ~
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( b+ [( k2 r3 d9 q4 B: n# f
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 Y1 O( @. Q. ^5 B! l7 a
tvb now,tvbnow,bttvb' N8 e6 ~: t9 @. Z- t" N0 `; {
The Incredible Magdeburg Water Bridge in Germany( ~+ p" X+ x( V b, \. n9 {+ R
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.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 @5 J* ^, Z6 Y# H( Z. d' Z
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. 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 u3 v6 u0 Y2 d, s) e i! i' \0 v
# g- F: j7 f! c5.39.217.76Construction 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. - Z3 ]$ l: g- M* b% c
, w& Y& [ }/ K4 r
tvb now,tvbnow,bttvb; ]. A/ X, Y6 M6 ]
9 g p& L: L+ B* U+ R公仔箱論壇tvb now,tvbnow,bttvb& J7 ~6 y. V: Y- W$ ?
, U) w2 b4 z7 wtvb now,tvbnow,bttvb5.39.217.76% G1 d2 a! z: X9 ^8 h4 t. A3 {. \8 h
公仔箱論壇4 Y; }0 ]1 v* h) Q' V; c! `" m) C
公仔箱論壇: Z7 ~/ B" Z9 R' O* H
5.39.217.764 h- g ~, L" Q5 O( p6 k
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|