CN107288140A - The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method - Google Patents
The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method Download PDFInfo
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- CN107288140A CN107288140A CN201710648679.9A CN201710648679A CN107288140A CN 107288140 A CN107288140 A CN 107288140A CN 201710648679 A CN201710648679 A CN 201710648679A CN 107288140 A CN107288140 A CN 107288140A
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- steel
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- steel cofferdam
- force bracket
- cofferdam
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
Abstract
Actively sink the constructing device rectified a deviation the invention discloses a kind of steel cofferdam, including steel pile casting counter-force bracket, steel cofferdam counter-force bracket and centre-hole jack, and the number pull bar equal with steel pile casting counter-force bracket number, and the number of steel cofferdam counter-force bracket is equal with the number of steel pile casting counter-force bracket and is arranged in corresponding, each pull bar from top to bottom sequentially passes through corresponding jack, steel cofferdam counter-force bracket and steel pile casting counter-force bracket；The steel cofferdam construction method that actively sinking is rectified a deviation is carried out with the constructing device, pull bar is tightened up by stretching for jack piston, the pulling force suffered by pull bar is switched to the lower pressure to steel cofferdam, so as to force steel cofferdam to be sunk by the lower pressure of active.Pressure is actively descended due to being applied with, equivalent to adding counterweight, therefore steel cofferdam subsidence velocity can be accelerated, reduces and inhales mud, shoveling workload；And pressurization is rectified a deviation than existing merely by inhaling mud correction rapidly, accurately.
Description
Technical field
The present invention relates to bridge, water conservancy foundation construction field, and in particular to a kind of construction that actively sinking is rectified a deviation of steel cofferdam
Device and construction method.
Background technology
Steel cofferdam (also known as steel jacket box) is typically used as the pier cap water-retaining structure of bridge, while also doubling as casting concrete
Template.Designed elevation can not be sunk to by its deadweight by being put under usual steel cofferdam after mud, in the past will by steel cofferdam every
Cabin adds water or concrete or sandstone as counterweight make it sink.
When driving depth is larger, the resistance of mud can be very big, fills it up with concrete even in steel cofferdam separation and makees counterweight, its is heavy
Amount be also insufficient to allow it to sink, or can sink but very slowly, to this construction stage in the past can only by inside and outside steel cofferdam suction mud,
Cut the earth to make it sink.《Bridge construction》The 6th phase of volume 45 in 2015《Shanghai Changjiang River bridge No. 3 masters of born port special purpose channel bridge
Pier steel cofferdam construction technology》Steel cofferdam is sunk to cutting the earth and inhale mud construction method and is described.Sink for accelerating steel cofferdam
Construction method, what is had been reported that at present is around inhaling mud method, improve in shoveling method, such as《Building materials and decoration》2016
1st phase《The main bridge 11# piers Double-Wall Steel Boxed Cofferdam of pool river grand bridge is brief talked to sink》.Chinese invention application (application number
201110410917.5th, applying date 2011.12.12) a kind of suction mud method for accelerating steel cofferdam component subsidence velocity is disclosed,
It is how that improving suction mud method makes steel cofferdam sink to accelerating to apply for a patent.But it is this suction mud expend the time it is long, expense compared with
Height, when inhaling mud outside steel cofferdam, security is not high, easily makes to run through inside and outside the soil of steel cofferdam bottom；In addition, the density of water
It is small, such as steel cofferdam separation add water as counterweight often weight not enough, plus sandstone is then difficult conveying, plus concrete then cost mistake
It is high.
And conventional Deep-water Steel Cofferdam Sinking method is to inhale mud by its deadweight plus counterweight or combination, cut the earth, category
In passive sinking, when conventional steel cofferdam is tilted, mud only is inhaled by stopping the fast side of sinking, only mud is inhaled in few side that sinks
Correction, it is time-consuming.
The content of the invention
The purpose of the present invention aiming at above-mentioned technology it is not enough there is provided one kind it is easy to operate, save expense, safety and height
The steel cofferdam of the effect constructing device that actively sinking is rectified a deviation and construction method.
To achieve the above object, the construction method that actively sinking is rectified a deviation of the steel cofferdam designed by the present invention, the steel cofferdam
For rectangle steel cofferdam, the construction method comprises the following steps：
1) a steel pile casting counter-force bracket is respectively installed in the steel pile casting upper surface for closing on steel cofferdam inwall；
2) a circle steel cofferdam counter-force bracket, of steel cofferdam counter-force bracket are provided with the upper position of steel cofferdam inwall
Number is equal with the number of steel pile casting counter-force bracket and is arranged in corresponding；
3) centre-hole jack is respectively installed in the upper surface of each steel cofferdam counter-force bracket；
4) pull bar is installed, and the number of pull bar is equal with the number of steel pile casting counter-force bracket；Each pull bar from top to bottom according to
It is secondary to pass through corresponding jack, steel cofferdam counter-force bracket and steel pile casting counter-force bracket, and the bottom of each pull bar passes through lower lock
Tight part is locked at the lower surface of steel pile casting counter-force bracket, and the top of each pull bar is locked at the piston of jack by upper locking member
On end face；
5) starting all jack stretches out its piston, and all Drag link tighteners, steel cofferdam is sunk by lower pressure；
6) step 5 is completed) after, locking member in the upper locking member on pull bar top, downslide is loosened until upper locking member is shelved on
On the piston end surface of jack, then repeat step 5), steel cofferdam is sunk again by lower pressure；
If in repeat step 5) settle out existing deflection at present, stops the action of the jack 4 of the fast side of steel cofferdam 1 of sinking, together
When accelerate the to sink jack 4 of the slow side of steel cofferdam 1 tighten up the action of pull bar, promoting steel cofferdam 1, subsidence velocity difference is come everywhere
Active correction is carried out to steel cofferdam 1；
7) repeat step 6), until steel cofferdam sinks down into predeterminated position.
Further, all steel pile casting counter-force brackets are in rectangular layout；Steel pile casting counter-force bracket in rectangular layout
The steel pile casting counter-force bracket of middle vertical direction arrangement is arranged symmetrically along steel cofferdam horizontal center line, and left and right sides vertical direction cloth
The steel pile casting counter-force bracket put is arranged symmetrically along the vertical center line of steel cofferdam；Level in steel pile casting counter-force bracket in rectangular layout
The steel pile casting counter-force bracket of direction arrangement is arranged symmetrically along the vertical center line of steel cofferdam, and the steel of front and rear sides horizontal direction arrangement
Casing counter-force bracket is arranged symmetrically along steel cofferdam horizontal center line
Further, when the pull bar is steel strand wires, the upper locking member includes upper anchor slab and installed in the upper anchor slab
In upper wedge-shaped intermediate plate, the lower locking member include lower anchor slab and the lower wedge grip piece in the lower anchor slab, the drawing
The top of bar sequentially passes through the upper anchor slab and the upper wedge-shaped intermediate plate from the bottom up, and the bottom of the pull bar is from top to bottom successively
Through the lower anchor slab and the lower wedge grip piece, and the upper wedge-shaped intermediate plate is in that top is arranged with the lower wedge grip piece.
Further, be provided with middle locking member between the steel cofferdam counter-force bracket and the jack, and it is described in
Between locking member include middle anchor slab and the intermediate wedge intermediate plate in the middle anchor slab, and the intermediate wedge intermediate plate with
The lower wedge grip piece is in that top is arranged.
Further, when the pull bar is screw-thread steel, the top and bottom of the pull bar pass through nut check.
A kind of steel cofferdam constructing device that actively sinking is rectified a deviation, including it is mounted adjacent to the steel pile casting upper end of steel cofferdam inwall
The steel pile casting counter-force bracket in face, one be fixed at steel cofferdam upper inside wall position enclose steel cofferdam counter-force bracket and installed in each
The centre-hole jack of steel cofferdam counter-force bracket upper surface, and the number pull bar equal with steel pile casting counter-force bracket number, and
The number of steel cofferdam counter-force bracket is equal with the number of steel pile casting counter-force bracket and in arrangement is corresponded, and each pull bar is by upper
Under sequentially pass through corresponding jack, steel cofferdam counter-force bracket and steel pile casting counter-force bracket, and the bottom of each pull bar passes through
Lower locking member is locked at the lower surface of steel pile casting counter-force bracket, and the top of each pull bar is locked at jack by upper locking member
On piston end surface.
Further, all steel pile casting counter-force brackets are in rectangular layout；Steel pile casting counter-force bracket in rectangular layout
The steel pile casting counter-force bracket of middle vertical direction arrangement is arranged symmetrically along steel cofferdam horizontal center line, and left and right sides vertical direction cloth
The steel pile casting counter-force bracket put is arranged symmetrically along the vertical center line of steel cofferdam；Level in steel pile casting counter-force bracket in rectangular layout
The steel pile casting counter-force bracket of direction arrangement is arranged symmetrically along the vertical center line of steel cofferdam, and the steel of front and rear sides horizontal direction arrangement
Casing counter-force bracket is arranged symmetrically along steel cofferdam horizontal center line.
Further, when the pull bar is steel strand wires, the upper locking member includes upper anchor slab and installed in the upper anchor slab
In upper wedge-shaped intermediate plate, the lower locking member include lower anchor slab and the lower wedge grip piece in the lower anchor slab, the drawing
The top of bar sequentially passes through the upper anchor slab and the upper wedge-shaped intermediate plate from the bottom up, and the bottom of the pull bar is from top to bottom successively
Through the lower anchor slab and the lower wedge grip piece, and the upper wedge-shaped intermediate plate is in that top is arranged with the lower wedge grip piece.
Further, be provided with middle locking member between the steel cofferdam counter-force bracket and the jack, and it is described in
Between locking member include middle anchor slab and the intermediate wedge intermediate plate in the middle anchor slab, and the intermediate wedge intermediate plate with
The lower wedge grip piece is in that top is arranged.
Further, when the pull bar is screw-thread steel, the top and bottom of the pull bar pass through nut check.
Compared with prior art, the present invention has advantages below：Pull bar is tightened up by stretching for jack piston, makes drawing
Pulling force suffered by bar switchs to the lower pressure to steel cofferdam, so as to force steel cofferdam to be sunk by the lower pressure of active.Due to applying
Add and actively descended pressure, equivalent to adding counterweight, therefore steel cofferdam subsidence velocity can have been accelerated, reduced and inhale mud, shoveling workload, or
Reduce separation concrete, sandstone addition；And pressurization is rectified a deviation than existing merely by inhaling mud correction rapidly, accurately, so as to save
Construction costs, and improve speed of application.
Brief description of the drawings
Fig. 1 is the steel cofferdam of the present invention constructing device mounting structure schematic diagram that actively sinking is rectified a deviation；
Fig. 2 is the mounting structure schematic diagram of embodiment 1；
Fig. 3 is the mounting structure schematic diagram of embodiment 2；
Fig. 4 is the mounting structure schematic diagram of embodiment 3.
Wherein：Steel cofferdam 1 is (wherein：Vertical center line 1.1, horizontal center line 1.2), steel pile casting 2, steel pile casting counter-force bracket
3rd, steel cofferdam counter-force bracket 4, centre-hole jack 5 be (wherein：Piston 5.1), pull bar 6, upper wedge-shaped intermediate plate 7, upper anchor slab 8, cast anchor
Plate 9, lower wedge grip piece 10, intermediate wedge intermediate plate 11, middle anchor slab 12, nut 13.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Actively sink the constructing device rectified a deviation for steel cofferdam as shown in Figure 1, including is mounted adjacent to the steel of the inwall of steel cofferdam 1
The steel pile casting counter-force bracket 3 of the upper surface of casing 2, one be fixed at the upper inside wall position of steel cofferdam 1 circle steel cofferdam counter-force bracket 4
And the centre-hole jack 5 installed in each upper surface of steel cofferdam counter-force bracket 4, and number and steel pile casting counter-force bracket 3
The equal pull bars 6 of number, and the number of steel cofferdam counter-force bracket 4 is equal with the number of steel pile casting counter-force bracket 3 and in one-to-one corresponding
Arrangement, each pull bar 6 from top to bottom sequentially passes through corresponding jack 5, steel cofferdam counter-force bracket 4 and steel pile casting counter-force bracket
3, and each the bottom of pull bar 6 is locked at the lower surface of steel pile casting counter-force bracket 3, the top of each pull bar 6 by lower locking member
It is locked at by upper locking member on the end face of piston 5.1 of jack 5；
Wherein, all steel pile casting counter-force brackets 3 are in rectangular layout；It is vertical in steel pile casting counter-force bracket 3 in rectangular layout
The steel pile casting counter-force bracket 3 of direction arrangement is arranged symmetrically along the horizontal center line 1.2 of steel cofferdam 1, and left and right sides vertical direction cloth
The steel pile casting counter-force bracket 3 put is arranged symmetrically along the vertical center line 1.1 of steel cofferdam 1；Steel pile casting counter-force bracket 3 in rectangular layout
The steel pile casting counter-force bracket 3 of middle horizontal direction arrangement is arranged symmetrically along the vertical center line 1.1 of steel cofferdam 1, and front and rear sides level
The steel pile casting counter-force bracket 3 of direction arrangement is arranged symmetrically along the horizontal center line 1.2 of steel cofferdam 1.
With reference to shown in Fig. 2, when pull bar 6 is steel strand wires, upper locking member includes upper anchor slab 8 and in upper anchor slab 8
Upper wedge-shaped intermediate plate 7, lower locking member includes lower anchor slab 9 and the lower wedge grip piece 10 in lower anchor slab 9, the top of pull bar 6 from
Under up sequentially pass through anchor slab 8 and upper wedge-shaped intermediate plate 7, and the bottom of pull bar 6 sequentially passes through lower anchor slab 9 and hyposphene from top to bottom
Clevis piece 10, and upper wedge-shaped intermediate plate 7 is in that top is arranged with lower wedge grip piece 10.In addition, with reference to shown in Fig. 3, steel cofferdam counter-force ox
It is also equipped with including middle anchor slab 12 and installed in centre in middle locking member, and middle locking member between leg 4 and jack 5
Intermediate wedge intermediate plate 11 in anchor slab 12, and intermediate wedge intermediate plate 11 is in that top is arranged with lower wedge grip piece 10.
With reference to shown in Fig. 4, when pull bar 6 is screw-thread steel, the top and bottom of pull bar 6 are locked by nut 13.
It is described below and carries out the steel cofferdam construction method that actively sinking is rectified a deviation using above-mentioned constructing device, it is all below to implement
Steel cofferdam is rectangle steel cofferdam in example.
Embodiment 1
As shown in Fig. 2 using steel strand wires as pull bar when, concrete construction method is as follows：
1) one steel pile casting counter-force bracket 3, Suo Yougang is respectively installed in the upper surface of steel pile casting 2 for closing on the inwall of steel cofferdam 1
Casing counter-force bracket 3 is in rectangular layout；The steel pile casting counter-force that vertical direction is arranged in steel pile casting counter-force bracket 3 in rectangular layout
Bracket 3 is arranged symmetrically along steel cofferdam horizontal center line 1.2, and the edge of steel pile casting counter-force bracket 3 of left and right sides vertical direction arrangement
The vertical center line 1.1 of steel cofferdam is arranged symmetrically；The steel pile casting that horizontal direction is arranged in steel pile casting counter-force bracket 3 in rectangular layout
Counter-force bracket 3 is arranged symmetrically along the vertical center line 1.1 of steel cofferdam, and the steel pile casting counter-force bracket of front and rear sides horizontal direction arrangement
3 are arranged symmetrically along steel cofferdam horizontal center line 1.2；
2) a circle steel cofferdam counter-force bracket 4, steel cofferdam counter-force bracket 4 are provided with the upper position of the inwall of steel cofferdam 1
Number it is equal with the number of steel pile casting counter-force bracket 3 and in correspond arrangement；
3) centre-hole jack 5 is respectively installed in the upper surface of each steel cofferdam counter-force bracket 4；
4) steel strand wires are installed, and the number of steel strand wires is equal with the number of steel pile casting counter-force bracket 3；Each steel strand wires are by upper
And under sequentially pass through corresponding jack 5, steel cofferdam counter-force bracket 4 and steel pile casting counter-force bracket 3, and the bottom of each steel strand wires
End sequentially passes through the lower anchor slab 9 and lower wedge grip piece 10 of lower locking member from top to bottom, so that by lower wedge grip 10 by steel strand wires
Bottom is locked at the lower surface of steel pile casting counter-force bracket 3 to it, and the top of each steel strand wires sequentially passes through locking from the bottom up
The upper anchor slab 8 of part and upper wedge-shaped intermediate plate 7, upper wedge-shaped intermediate plate 7 are shelved on the end face of piston 5.1 of jack 5, so as to pass through upper wedge
Steel strand wires top is locked on the end face of piston 5.1 of jack 5 by clevis 7 to it；Wherein, upper wedge-shaped intermediate plate 7 and lower wedge grip
Piece 10 is in that top is arranged, realizes downward unidirectional slip；
5) starting all jack 5 stretches out its piston 5.1, and all steel strand wires are tightened up, and steel pile casting 2 is used as not kinetoplast, thousand
Jin top 5 and steel cofferdam 1 are as mobile, and steel strand wires are by upper wedge-shaped intermediate plate 7, upper anchor slab 8 and the steel pile casting counter-force of the top of jack 5
Lower wedge grip piece 10, the lower anchor slab 9 of the lower section of bracket 3 are clamped, because active force and reaction force are equal in magnitude in opposite direction, therefore steel
Pulling force suffered by twisted wire switchs to the reaction force to steel cofferdam 1, i.e., downward pressure, and then steel cofferdam 1 is sunk by lower pressure；
6) step 5 is completed) after, when 5.1 backhaul of piston of jack 5, the upper wedge-shaped intermediate plate 7 of the top of jack 5 unclamps,
Upper wedge-shaped intermediate plate 7 is snapped down on 5.1 upper surfaces of piston along steel strand wires, and steel strand wires bottom is yet by under the lower section of steel pile casting 2
Wedge-shaped intermediate plate 10 and the clamping locking of lower anchor slab 9；Upper wedge-shaped intermediate plate 7 is snapped down to along steel strand wires on the upper surface of piston 5.1, then
Repeat step 5), steel cofferdam 1 is sunk again by lower pressure；
Due to steel cofferdam bottom, soil resistance is different everywhere, and steel cofferdam unavoidably has deflection in sinking, if in weight
Multiple step 5) settle out existing deflection at present, the action of the jack 5 for the fast side of steel cofferdam 1 that stops sinking, while it is slow to accelerate to sink
The jack 5 of the side of steel cofferdam 1 tightens up the action of pull bar, and promoting steel cofferdam 1, subsidence velocity difference is led to steel cofferdam 1 everywhere
Dynamic correction；That is, the jack 5 for the fast side of steel cofferdam 1 of sinking does not start, the intensified pressure of jack 5 that sinks slow or
Step 6 is repeated several times) make it sink to accelerating；
7) repeat step 6), until steel cofferdam 1 sinks down into predeterminated position, finally remove all steel pile casting counter-force brackets 3, steel
Cofferdam counter-force bracket 4, actively sinks the construction of correction so as to complete steel cofferdam 1.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is：With reference to shown in Fig. 3, set between steel cofferdam counter-force bracket 4 and jack
Middle locking member is equipped with, and middle locking member includes middle anchor slab and the intermediate wedge intermediate plate 11 in middle anchor slab 12,
And intermediate wedge intermediate plate 11 is in that top is arranged with lower wedge grip piece 10.If steel cofferdam 1 is very high so that steel strand wires are long, when very heavy
During 5.1 backhaul of piston on top 5, the wedge-shaped intermediate plate 7 in the top of jack 5 unclamps, steel strand wires elastical retraction, and in the lower section of jack 5
Between wedge-shaped intermediate plate 11 can be brought into by the retraction of steel strand wires in middle anchor slab 12 and clamp steel strand wires so that in the return stroke of jack 5
Steel strand wires can also keep tension state, so that steel cofferdam 1 also keeps pressured state.
Embodiment 3
As shown in figure 3, using screw-thread steel as pull bar when, concrete construction method is as follows：
1) one steel pile casting counter-force bracket 3, Suo Yougang is respectively installed in the upper surface of steel pile casting 2 for closing on the inwall of steel cofferdam 1
Casing counter-force bracket 3 is in rectangular layout；The steel pile casting counter-force that vertical direction is arranged in steel pile casting counter-force bracket 3 in rectangular layout
Bracket 3 is arranged symmetrically along the horizontal center line 1.2 of steel cofferdam 1, and the edge of steel pile casting counter-force bracket 3 of left and right sides vertical direction arrangement
The vertical center line 1.1 of steel cofferdam 1 is arranged symmetrically；The steel shield that horizontal direction is arranged in steel pile casting counter-force bracket 3 in rectangular layout
Cylinder counter-force bracket 3 is arranged symmetrically along the vertical center line 1.1 of steel cofferdam 1, and the steel pile casting counter-force of front and rear sides horizontal direction arrangement
Bracket 3 is arranged symmetrically along the horizontal center line 1.2 of steel cofferdam 1；
2) a circle steel cofferdam counter-force bracket 4, steel cofferdam counter-force bracket 4 are provided with the upper position of the inwall of steel cofferdam 1
Number it is equal with the number of steel pile casting counter-force bracket 3 and in correspond arrangement；
3) centre-hole jack 5 is respectively installed in the upper surface of each steel cofferdam counter-force bracket 4；
4) screw-thread steel is installed, and the number of screw-thread steel is equal with the number of steel pile casting counter-force bracket 3；Each screw-thread steel is by upper
And under sequentially pass through corresponding jack 5, steel cofferdam counter-force bracket 4 and steel pile casting counter-force bracket 3, and the bottom of each screw-thread steel
End is through nut 13, so that screw-thread steel bottom be locked to the lower surface of steel pile casting counter-force bracket 3 by nut 13 to it, each
The top of screw-thread steel pass through nut 13, tighten nut 13 until nut 13 it is spacing on the end face of piston 5.1 of jack 5 so that
Screw-thread steel top is locked to it on end face of piston 5.1 of jack 5 by nut 13；
5) starting all jack 5 stretches out its piston 5.1, and all screw-thread steels are tightened up, and steel pile casting 2 is used as not kinetoplast, thousand
Jin top 5 and steel cofferdam 1 are as mobile, and screw-thread steel locks clamping by nut 13, because active force and reaction force are equal in magnitude
In the opposite direction, thus pulling force suffered by screw-thread steel switchs to the reaction force to steel cofferdam 1, i.e., downward pressure, then steel cofferdam 1 by
Lower pressure and sink；
6) step 5 is completed) after, when 5.1 backhaul of piston of jack 5, the nut 13 of the top of jack 5 is turned, until
The nut 13 of the top of jack 5 is snapped down on the upper surface of piston 5.1, then repeat step 5), make steel cofferdam 1 by lower pressure
Sink again；
Due to the bottom of steel cofferdam 1, soil resistance is different everywhere, and steel cofferdam 1 unavoidably has deflection in sinking, if
Repeat step 5) settle out existing deflection at present, stops the action of the jack 5 of the fast side of steel cofferdam 1 of sinking, while accelerating to sink slowly
The jack 5 of the side of steel cofferdam 1 tighten up the action of pull bar, promoting steel cofferdam 1, subsidence velocity difference is carried out to steel cofferdam 1 everywhere
Actively rectify a deviation；That is, the jack 5 for the fast side of steel cofferdam 1 of sinking does not start, the intensified pressure of jack 5 that sinks slow or
Step 6 is repeated several times in person) make it sink to accelerating；
7) repeat step 6), until steel cofferdam 1 sinks down into predeterminated position, finally remove all steel pile casting counter-force brackets 3, steel
Cofferdam counter-force bracket 4, so as to complete the steel cofferdam construction that actively sinking is rectified a deviation.
In summary, the present invention tightens up pull bar by stretching for jack piston, the pulling force suffered by pull bar is switched to pair
The lower pressure of steel cofferdam, so as to force steel cofferdam to be sunk by the lower pressure of active.Pressure is actively descended due to being applied with, quite
In adding counterweight, therefore steel cofferdam subsidence velocity can be accelerated, reduce and inhale mud, shoveling workload, or reduce separation concrete, sandstone
Addition；And correction of pressurizeing is simple rapider, accurately by inhaling mud correction than existing, so as to save construction costs, and improves and apply
Work speed.
Claims (10)
- The construction method of correction 1. a kind of steel cofferdam actively sinks, the steel cofferdam is rectangle steel cofferdam, it is characterised in that：It is described Construction method comprises the following steps：1) a steel pile casting counter-force bracket is respectively installed in the steel pile casting upper surface for closing on steel cofferdam inwall；2) be provided with a circle steel cofferdam counter-force bracket at the upper position of steel cofferdam inwall, the number of steel cofferdam counter-force bracket with The number of steel pile casting counter-force bracket is equal and is arranged in corresponding；3) centre-hole jack is respectively installed in the upper surface of each steel cofferdam counter-force bracket；4) pull bar is installed, and the number of pull bar is equal with the number of steel pile casting counter-force bracket；Each pull bar is from top to bottom worn successively Corresponding jack, steel cofferdam counter-force bracket and steel pile casting counter-force bracket are crossed, and the bottom of each pull bar passes through lower locking member The lower surface of steel pile casting counter-force bracket is locked at, the top of each pull bar is locked at the piston end surface of jack by upper locking member On；5) starting all jack stretches out its piston, and all Drag link tighteners, steel cofferdam is sunk by lower pressure；6) step 5 is completed) after, locking member is loosened in the upper locking member on pull bar top, downslides up to that upper locking member is shelved on is very heavy On the piston end surface on top, then repeat step 5), steel cofferdam is sunk again by lower pressure；If in repeat step 5) settle out existing deflection at present, stops the action of the jack 4 of the fast side of steel cofferdam 1 of sinking, while plus The jack 4 of the slow side of steel cofferdam 1 of speed sinking tightens up the action of pull bar, and promoting steel cofferdam 1, subsidence velocity difference is come to steel everywhere Cofferdam 1 carries out active correction；7) repeat step 6), until steel cofferdam sinks down into predeterminated position.
- 2. the construction method that steel cofferdam active sinking is rectified a deviation according to claim 1, it is characterised in that：All steel pile castings Counter-force bracket is in rectangular layout；The steel pile casting counter-force bracket edge that vertical direction is arranged in steel pile casting counter-force bracket in rectangular layout Steel cofferdam horizontal center line is arranged symmetrically, and the left and right sides vertical direction arrangement steel pile casting counter-force bracket along steel cofferdam it is vertical in Heart line is arranged symmetrically；The steel pile casting counter-force bracket that horizontal direction is arranged in steel pile casting counter-force bracket in rectangular layout is along steel cofferdam Vertical center line is arranged symmetrically, and front and rear sides horizontal direction arrangement steel pile casting counter-force bracket along steel cofferdam horizontal center line pair Claim arrangement.
- The construction method of correction 3. steel cofferdam according to claim 1 or claim 2 actively sinks, it is characterised in that：The pull bar is During steel strand wires, the upper locking member includes upper anchor slab and the upper wedge-shaped intermediate plate in the upper anchor slab, the lower locking member Lower wedge grip piece including lower anchor slab and in the lower anchor slab, the top of the pull bar sequentially passes through described from the bottom up Upper anchor slab and the upper wedge-shaped intermediate plate, the bottom of the pull bar sequentially passes through the lower anchor slab and the lower wedge grip from top to bottom Piece, and the upper wedge-shaped intermediate plate is in that top is arranged with the lower wedge grip piece.
- 4. the construction method that steel cofferdam active sinking is rectified a deviation according to claim 3, it is characterised in that：The steel cofferdam counter-force Middle locking member is provided between bracket and the jack, and the middle locking member includes middle anchor slab and installed in described Intermediate wedge intermediate plate in middle anchor slab, and the intermediate wedge intermediate plate is in that top is arranged with the lower wedge grip piece.
- The construction method of correction 5. steel cofferdam according to claim 1 or claim 2 actively sinks, it is characterised in that：The pull bar is During screw-thread steel, the top and bottom of the pull bar pass through nut check.
- The constructing device of correction 6. a kind of steel cofferdam actively sinks, it is characterised in that：Including being mounted adjacent to steel cofferdam inwall The steel pile casting counter-force bracket of steel pile casting upper surface, one be fixed at steel cofferdam upper inside wall position circle steel cofferdam counter-force bracket and Centre-hole jack installed in each steel cofferdam counter-force bracket upper surface, and number are equal with steel pile casting counter-force bracket number Pull bar, and steel cofferdam counter-force bracket number it is equal with the number of steel pile casting counter-force bracket and in correspond arrangement, each Pull bar from top to bottom sequentially passes through corresponding jack, steel cofferdam counter-force bracket and steel pile casting counter-force bracket, and each pull bar Bottom the lower surface of steel pile casting counter-force bracket is locked at by lower locking member, the top of each pull bar is locked by upper locking member On the piston end surface of jack.
- 7. the constructing device that steel cofferdam active sinking is rectified a deviation according to claim 6, it is characterised in that：All steel pile castings Counter-force bracket is in rectangular layout；The steel pile casting counter-force bracket edge that vertical direction is arranged in steel pile casting counter-force bracket in rectangular layout Steel cofferdam horizontal center line is arranged symmetrically, and the left and right sides vertical direction arrangement steel pile casting counter-force bracket along steel cofferdam it is vertical in Heart line is arranged symmetrically；The steel pile casting counter-force bracket that horizontal direction is arranged in steel pile casting counter-force bracket in rectangular layout is along steel cofferdam Vertical center line is arranged symmetrically, and front and rear sides horizontal direction arrangement steel pile casting counter-force bracket along steel cofferdam horizontal center line pair Claim arrangement.
- The constructing device of correction 8. the steel cofferdam according to claim 6 or 7 actively sinks, it is characterised in that：The pull bar is During steel strand wires, the upper locking member includes upper anchor slab and the upper wedge-shaped intermediate plate in the upper anchor slab, the lower locking member Lower wedge grip piece including lower anchor slab and in the lower anchor slab, the top of the pull bar sequentially passes through described from the bottom up Upper anchor slab and the upper wedge-shaped intermediate plate, the bottom of the pull bar sequentially passes through the lower anchor slab and the lower wedge grip from top to bottom Piece, and the upper wedge-shaped intermediate plate is in that top is arranged with the lower wedge grip piece.
- 9. the constructing device that steel cofferdam active sinking is rectified a deviation according to claim 8, it is characterised in that：The steel cofferdam counter-force Middle locking member is provided between bracket and the jack, and the middle locking member includes middle anchor slab and installed in described Intermediate wedge intermediate plate in middle anchor slab, and the intermediate wedge intermediate plate is in that top is arranged with the lower wedge grip piece.
- The constructing device of correction 10. the steel cofferdam according to claim 6 or 7 actively sinks, it is characterised in that：The pull bar is During screw-thread steel, the top and bottom of the pull bar pass through nut check.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710648679.9A CN107288140A (en) | 2017-08-01 | 2017-08-01 | The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710648679.9A CN107288140A (en) | 2017-08-01 | 2017-08-01 | The steel cofferdam constructing device that actively sinking is rectified a deviation and construction method |
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| CN107288140A true CN107288140A (en) | 2017-10-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677978A (en) * | 2018-05-04 | 2018-10-19 | 中国建筑第四工程局有限公司 | A kind of bridge prestressing without bondn splicing Double-Wall Steel Boxed Cofferdam sinking construction engineering method |
| CN116289959A (en) * | 2022-12-13 | 2023-06-23 | 保利长大工程有限公司 | Floating lifting and lowering method and device for water pile foundation construction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06108473A (en) * | 1992-09-28 | 1994-04-19 | Yamaha Kako Kensetsu Kk | Settled posture controller of caisson in open caisson process |
| CN202519690U (en) * | 2012-03-30 | 2012-11-07 | 长沙理工大学 | Releasing device for bottomless dual-wall steel boxed cofferdam |
| CN104018512A (en) * | 2014-06-13 | 2014-09-03 | 上海市基础工程集团有限公司 | Open caisson sinking construction method slightly disturbing environment |
-
2017
- 2017-08-01 CN CN201710648679.9A patent/CN107288140A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06108473A (en) * | 1992-09-28 | 1994-04-19 | Yamaha Kako Kensetsu Kk | Settled posture controller of caisson in open caisson process |
| CN202519690U (en) * | 2012-03-30 | 2012-11-07 | 长沙理工大学 | Releasing device for bottomless dual-wall steel boxed cofferdam |
| CN104018512A (en) * | 2014-06-13 | 2014-09-03 | 上海市基础工程集团有限公司 | Open caisson sinking construction method slightly disturbing environment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677978A (en) * | 2018-05-04 | 2018-10-19 | 中国建筑第四工程局有限公司 | A kind of bridge prestressing without bondn splicing Double-Wall Steel Boxed Cofferdam sinking construction engineering method |
| CN108677978B (en) * | 2018-05-04 | 2021-06-15 | 中国建筑第四工程局有限公司 | Sinking construction method for bridge unbonded prestressed spliced double-wall steel cofferdam |
| CN116289959A (en) * | 2022-12-13 | 2023-06-23 | 保利长大工程有限公司 | Floating lifting and lowering method and device for water pile foundation construction |
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Application publication date: 20171024 |