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
) S# {  H& i& f, Etvb now,tvbnow,bttvb* _8 |3 r4 U; N& U; ~
If you are not a Physics person, read on and learn a fact of physics.   
- d' x( e, F2 }8 mAMAZING!
. K' j8 q  H% ^" D) C, E; p& I1 a
5.39.217.763 V0 \; G+ y+ m" r9 p
Even after you see it, it is still hard to believe!

& e3 y! t6 p5 X( c! g7 W5.39.217.76- @0 G0 @( C, w' F* Q
! t8 L+ B$ a5 h( C# b# w9 N
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76, L' O% |! ?$ b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' n$ q0 O; D& I+ H2 @1 @" c5.39.217.76It is located in the city of Magdeburg, near Berlin.

7 A& Q' O0 L3 K% `3 stvb now,tvbnow,bttvb
( {/ d) R" D1 ?5 O: ^1 L7 z* tThe photo was taken on the day of inauguration.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。- x1 w' L4 ?( _* v! z' p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
" a8 Q' j1 j& O. l: I+ q# Z1 F/ [5.39.217.764 a6 c8 i- ?4 }
Question:
公仔箱論壇2 R2 N6 J6 F* F$ F) \

" q1 N* I4 |# Z) M% H2 atvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( [0 J, n' G1 [% l; `8 }Or just the weight of the water? 4 ]5 t& B" v$ p3 h' t4 {* F' U& C9 i

. r9 i) E( A5 z8 o% h+ KAnswer:

( @9 `/ I/ b) L5 U& j1 x% G% Y( z4 Btvb now,tvbnow,bttvbtvb now,tvbnow,bttvb- r. X5 w: n" W# E5 H9 p) y7 P7 v
It only needs to be designed to withstand the weight of  the water!
8 {8 V$ `( T: F6 Y* h* R+ ~5 TWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
4 U  y* @1 _- Z- K$ p1 n% ~, S& g
7 L' b1 M5 Z6 @- Z( F

' `+ ]- b! t% U: ^. B公仔箱論壇
The Incredible Magdeburg Water Bridge in Germany公仔箱論壇# f1 L* k8 i* f3 }
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.4 a9 ]& `2 x" m
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.
) \2 `/ x. x8 W2 o
7 @  R/ S% P, s0 X: R; j* X) X' gConstruction 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.
- k6 ^3 R# a0 e& m
7 J3 F0 M/ P7 Y8 }$ G
+ [" R" B+ V! t2 H3 r- S, y, W
tvb now,tvbnow,bttvb; y0 h/ i( y4 U, o9 ~0 T9 ]

: _; D& U5 A; ?- E! {$ x
# N+ U! x0 i: O- ~- {1 ?2 D* Btvb now,tvbnow,bttvb
; h  Q( Q% i% s! ?, D: k: M2 H. b- a5 V6 A4 C
5.39.217.76/ y" V7 e0 f! v

# ?' x3 W  c/ t7 L7 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tvb now,tvbnow,bttvb$ W# s7 K( b+ h7 v) u
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
* \4 v- O0 J8 A+ }% J, |$ }5 q也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。! L& d3 m( ~) ~2 N: M- N# Y
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。
% i0 D6 e; I8 V# N( {; M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。
, i, T% I4 s6 f/ ~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 萬5.39.217.769 X2 S/ b& j3 ^
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。 公仔箱論壇" x5 ?. ]& T: f) o# b
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tvb now,tvbnow,bttvb4 v6 M* W4 g3 N' c$ ~
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