返回列表 回復 發帖

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! m, e+ o4 R) |" y4 U

. B: @% w, h" jtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.   5.39.217.76  j. o/ e1 g) ]. I; p  j2 E! k
AMAZING!
. {& W) P3 y6 p

! c/ h: m6 Q: r/ ?* p! @9 w1 G' AEven after you see it, it is still hard to believe!

8 }1 x) C2 Q* {: S2 \2 u8 }tvb now,tvbnow,bttvb
$ k) R+ E# v  n! K5.39.217.76
: {6 I: ^0 z% j  D7 GMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb: k" ~( Q3 A1 w0 F9 Y8 v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. n4 y+ f/ j9 t5.39.217.76It is located in the city of Magdeburg, near Berlin.
, w! c4 D2 t+ r' W
# L# W3 V! E) u2 K) W$ S
The photo was taken on the day of inauguration.5.39.217.767 L0 q5 E& y" i4 X& t# b
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
7 N( ]. l2 j; y  y( n% F8 S+ U* T6 @& ?/ g$ L0 r# _
Question:
" n4 i, I7 a, V4 w  V2 x3 N

& f6 r" Q& `% R/ ~+ _5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
' m  ~" `$ _/ t: z5 s3 ctvb now,tvbnow,bttvbOr just the weight of the water?
1 w+ l. u& O" o3 x- e7 i  B# s% ^$ |" X2 S% [2 C) [1 P
Answer:
5.39.217.769 g+ s8 N- _! B* y2 Y3 x
公仔箱論壇7 m3 q9 f4 w# a
It only needs to be designed to withstand the weight of  the water!
! w9 X" I* ^  B5 P* N  X5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded

( \& ~( _3 h% X( T: T( U" ?- [, _tvb now,tvbnow,bttvb: A" L' i5 B: {/ v# ^# O, U- f' C
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。5 H8 ^" ~9 _, {5 E) B& Q+ Y7 p
The Incredible Magdeburg Water Bridge in Germany
; m6 Z; T1 K- b) s  ?5 B5.39.217.76The 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$ |, y+ O4 \6 J7 P, \" [
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. # l  M- }# ]* k6 K, ~8 z5 i
& x, y; S0 p- i" p& ]  x
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。' f. e5 w+ J8 j$ x8 d5 L. y

+ p2 u) w" ]# E2 |tvb now,tvbnow,bttvb5.39.217.76( m+ ^% x( V; e; `3 a/ H" m% c
( U7 X& ~0 `+ @% y7 r& Y
5.39.217.76/ d/ `4 E, S! _* l. I
5.39.217.76  s7 g; V, @( A; |2 z4 L3 h

+ K5 z9 e& A, Q9 P6 Q) s( r- a5.39.217.765 A. |. J  C" |8 v6 r
6 e- ^7 a, |; [" W& f) l

! H1 n. S- z  _# C( M
附件: 您所在的用戶組無法下載或查看附件

平壤核子能源研究所
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$ C9 r" {3 e) c
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
, n7 O9 a' N9 M  q) HTVBNOW 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。也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。, E9 d! H- r9 Y7 b' D
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。公仔箱論壇$ X# J# D3 T1 v7 ^
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。
" ^6 r  [8 f5 `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。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
5 O$ T" V9 |2 V! ~9 {+ ?1 \0 B公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
8 @3 Q- U" e6 h  \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。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6 Z; c+ Z, v; T' U
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。
1

評分次數

  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
提示: 作者被禁止或刪除 內容自動屏蔽
返回列表