本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 _) l, f' F8 v! T( e0 ~/ i* T0 }% _tvb now,tvbnow,bttvb
4 A5 _( N; L1 ~& d5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
: ^5 N/ X& D; E' M. Otvb now,tvbnow,bttvbAMAZING! 0 B8 Y! q% ^% L1 H2 S$ B
) ~/ t. ?/ {) L* ~) G* R& IEven after you see it, it is still hard to believe!
* j: N4 F2 A' h& _/ k kTVBNOW 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。" h( U- N* T5 ]2 U8 t3 D) W' z* P+ U
公仔箱論壇' U, G& E; w& F: J8 r
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ v$ y; E: q' u( d5 w, AThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. J: _+ I+ ?- p L
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb0 {1 ^$ }+ v% G/ R
5.39.217.76; m( Y! y% ?8 w* k& M# [. v
The photo was taken on the day of inauguration.! ]" s* B' V6 a) t3 S
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb# V- Y$ u) Z4 z7 f0 Y, p
/ a& P6 U, f! C8 M/ Btvb now,tvbnow,bttvbQuestion:/ u$ d& g4 Y/ W0 ^
8 b3 U% Y( i0 K" w* r2 D* Y! R公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 s* E' j: {; {! z s# LOr just the weight of the water? 公仔箱論壇0 U" M4 m" o8 {
tvb now,tvbnow,bttvb: R; d4 t0 X* n% y, i% h7 h% c: c' U
Answer:
3 A. Z( I* \ ^3 O5.39.217.76' X; G0 Y( J" `4 ?2 Z/ }
It only needs to be designed to withstand the weight of the water!
' j9 V! ?$ Z# e4 WTVBNOW 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。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6 q' S. a. u& z' t# n C; r
y. z+ }. j( k. l: KTVBNOW 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。公仔箱論壇/ u( m2 z A, K1 ~' z3 ^
The Incredible Magdeburg Water Bridge in Germany5.39.217.763 a" U F" O* P9 |" 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.
7 r: @* j! k/ i9 ]4 v- Y. U3 c/ EThe 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.
& U" M- e* L9 {4 z4 {" K7 L" N! l b1 v9 p$ g
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.
7 A8 o( O a# m4 Q: _
, U( @4 |6 B- V5.39.217.76
~% Q: o1 p; I3 K9 \+ u8 ~0 ?: y5 ?" I. Y2 Q# {- ~/ H! ~5 \
g5 e5 l6 M @0 A4 t
9 d. E! y- q. m% C- v
8 R7 [! y1 [5 m6 A ]8 {
' e* m; ^3 G! M1 \5.39.217.76! d4 D3 |8 J6 x' q
5.39.217.76 @# v- `: t1 A0 v* W4 e/ @
|