Today before dawn
Chinese karst landforms
The first
Cross Gao Tie turn is inclined play the bridge
Longyan big bridge undertakes
Bridge advocate the tower rotates 69 degrees
Construction
(Longyan big bridge advocate the tower rotates 69 degrees the effect pursues)
(boat pats Longyan big bridge advocate before tower turn advocate tower attitude)
In construction site,
" lapidary " model bridge advocate tower
in order to make an appointment with minutely for a time speed,
Undertake place rotates adagio.
(Longyan big bridge advocate the tower rotates 69 degrees construction delay time films)
(Longyan big bridge advocate tower delay time of 69 degrees of scale films)
Last a period of time is controlled 20 minutes 1 hour
The turn that finish
Safety arrives appoint the position
The diameter of ball bore with a reamer that turn uses is as long as 5 meters,
Gross weight exceeds 120 tons.
Design the largest carrying capacity to be as high as 25000 tons,
Be equivalent to can bearing the weight of iron tower of Er of 2.5 dust humble.
Turn process is additionally medium
Change to turn angle and attitude
monitor and control is attached most importance to especially should,
Precision demand is extremely high.
(the spot inspects rotational system to run a condition, a place of strategic importance that emphasizes wanting to had held to maintain the clearance below the foot and 4 fluorine slide fills up a circumstance)
(the spot affirms turn angle and rotational rate, emphasize turning angle wants to control accurate, end of turn drawing near wants seasonable entrance to move, had avoided to turn)
And connect before advocate the turn that the tower takes bridge floor is different,
This kind " alone tower sheet turns " in
Our country still is belonged to in the inclined construction that play the bridge first.
Taking the turn of bridge floor
Be like is a person is taking bamboo pole wirewalking
Grow long bridge floor to be able to have proper balance effect
And " alone tower sheet turns " resembling is to placing a hand
Resemble stand at attention in that way stiff ground wirewalking
Poise harder
This " alone tower sheet turns " after finishing,
Will undertake roof beam of bridge floor box is installed.
The installation after a few months is finished,
Advocate the tower connects bridge floor again whole " 2 turn " 21 degrees,
Reach final design position.
Such " 2 turn " construction is in
Our country also is in the inclined construction that play the bridge first.
After big bridge builds,
Will become Longyan city in throughway system important one annulus,
Promotion city traffic runs efficiency.
Video (picture) : Thunder cultivates Gong Luobin to bilk green jade beautiful
Editor: Chen Le of Ling of Yang Miao forest
Be on duty: Chen Hong course of study
Examine and verify: Xu Dezhi
Supervise the manufacture of: Shenyang celebrates a city
Origin: Longyan TV station