CN204000905U - A kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction - Google Patents

A kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction Download PDF

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Publication number
CN204000905U
CN204000905U CN201420321590.3U CN201420321590U CN204000905U CN 204000905 U CN204000905 U CN 204000905U CN 201420321590 U CN201420321590 U CN 201420321590U CN 204000905 U CN204000905 U CN 204000905U
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China
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cofferdam
truss
binder
double
baffle plate
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CN201420321590.3U
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Inventor
曾健
詹光善
黄修平
郭志伟
杨苏海
关小会
李宁
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CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
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CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
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Abstract

The utility model relates to field, cofferdam, refer to particularly a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction, comprise two truss structures and two baffle plates, two truss structures are symmetricly set in the rectangular configuration middle part that inside panel surrounds into, and truss two ends are vertically welded on inside panel; Between the symmetrical and truss of two described baffle plates, the space between truss is divided into three fast regions; Described through hole comprises that two near inside panels, equal and opposite in direction and symmetrical weighted regions and the middle binder template region that is connected both sides cushion cap.The utility model, by cofferdam truss is processed and transferred together with cofferdam, has reduced engineering difficulty, has improved operating efficiency; The load making progress when baffle plate exterior lateral area adopts the construction technology solution of back-up sand counterweight to draw water, baffle plate has played the effect of binder template and back-up sand dividing plate, without inserted to play auxiliary pile, has simplified construction technology, has saved construction cost.

Description

A kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction
Technical field
The utility model relates to field, cofferdam, refers to particularly a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction.
Background technology
Cofferdam is in hydraulic engineering construction, for building permanent water conservancy projects, and the provisional space enclosing structure of building.Its effect is the position of building that anti-sealing and earth enter building, so that at cofferdam internal drainage, excavation pit, builds building, is generally mainly used in hydraulic architecture.As in bridge construction, when bridge pier, cushion cap are positioned at below the water level of earth's surface, the more shallow and flow velocity of water hour, can be built timber sheet piling or steel sheet-pile cofferdam, single-wall steel cofferdam, generally takes Double-Wall Steel Boxed Cofferdam form when the darker cushion cap buried depth of the depth of water is larger.It both can waterproof, dash, can support again the hole wall of foundation ditch, and except the part as formal building, generally remove after construction completes in cofferdam.
Current normally used cofferdam can be divided into two kinds, single wall formula cofferdam and double-walled cofferdam by structure, and it is more shallow that single wall formula cofferdam is mainly used in water level, and current are releived, the construction location that hydraulic pressure is less; It is darker that double-walled cofferdam is used in water level conventionally, and water velocity is anxious, the position that construction environment hydraulic pressure is larger.At present conventional double-walled cofferdam, is comprised of inwall, outer wall, and between inside and outside wall, by vertical secondary beam, horizontal ring flat-plate and horizontal braces connect, and inside, cofferdam arranges the requirement that steel pipe supports to meet intensity and the rigidity in cofferdam.
The larger construction with binder cushion cap of existing buried depth, if binder concrete square amount is less, generally adopts prefabricating and constructing, if binder concrete square amount is larger, generally takes auxiliary pile construction technology.The construction of auxiliary pile construction technology is trouble comparatively.And it is larger affected by geological condition, and construction cost is larger.
Summary of the invention
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, and a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction is provided.
The technical solution of the utility model is: a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction, comprise exterior panel, inside panel, sword sole, described exterior panel, inside panel bottom connect by sword sole, between exterior panel and inside panel, be provided with strutbeam, it is characterized in that: also comprise two truss structures and two baffle plates, two described truss structures are symmetricly set in the central bottom of the rectangular configuration that inside panel surrounds into, and truss two ends are vertically welded on inside panel; Two described baffle plates are symmetrically distributed between truss, and the space between truss is divided into three regions; Three described regions comprise that two near inside panels, equal and opposite in direction and symmetrical weighted regions and the middle binder template region that is connected both sides cushion cap.
Further in described weighted regions, fill fine sand; Fluid concrete in described binder template region.
Further on two described baffle plates, be provided with baffle plate cross bar and baffle plate montant; Described baffle plate cross bar and baffle plate montant are mutually vertical and be evenly distributed on the side of baffle plate.
Further between two described baffle plates, be at least provided with the Screw arbor with nut at both-ends of two vertical baffles.
Further described cofferdam is divided into upper and lower two joints.
The utility model, by cofferdam truss is processed and transferred together with cofferdam, has reduced engineering difficulty, has improved operating efficiency; The load making progress when baffle plate exterior lateral area adopts the construction technology solution of back-up sand counterweight to draw water, baffle plate has played the effect of binder template and back-up sand dividing plate, without inserted to play auxiliary pile, has simplified construction technology, has saved construction cost.
Accompanying drawing explanation
Fig. 1: top view of the present utility model;
Fig. 2: lateral view of the present utility model;
Fig. 3: baffle arrangement schematic diagram of the present utility model;
Wherein: 1-exterior panel; 2-inside panel; 3-strutbeam; 4-sword sole; 5-truss; 6-baffle plate; 7-weighted regions; 8-binder template region; 9-Screw arbor with nut at both-ends; 10-baffle plate cross bar; 11-baffle plate montant; 12-casing; The support of 13-steel pipe; 14-guiding device; 15-cushion cap.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction as shown in Fig. 1~2, the larger weight of the general volume of double-wall cofferdam of generally using is larger, consider the requirement of lifting and handling equipment, double-wall cofferdam can be divided into upper and lower two joints, be respectively coxopodite cofferdam and epimerite cofferdam, when assembled, first coxopodite cofferdam installed and fixed, again epimerite cofferdam is welded on coxopodite cofferdam, then in cofferdam weldable steel tube stay.
Double-wall cofferdam is the rectangular configuration being surrounded into by exterior panel 1 and inside panel 2, between exterior panel 1 and inside panel 2, be provided with a lot of strutbeam 3, strutbeam 3 is evenly distributed in the space between inside panel 2 and exterior panel 1, the effect that strutbeam 3 is set is mainly to strengthen cofferdam rigidity, makes exterior panel 1 and inside panel 3 form an overall structure.
Between cofferdam bottom outer wall plate 1 and inside panel 2, by sword sole 4, connect, the sword pin shape of plate 4 for tilting, such setting is in order to strengthen the rigidity of cofferdam sword pin while transferring, to avoid the obstructions such as cofferdam lower block stone to destroy cofferdam, being conducive to the sinking in cofferdam.
Cofferdam inside panel 2 surrounds into ring-type, between inside panel 2, be provided with truss 5, truss 5 two ends are vertically welded in position on the lower side, inside panel 2 bottoms, the direction of truss 5 is direction settings of current while vertically constructing, the setting of truss 5 is to provide shuttering supporting effect for weighted regions 7 and binder template region 8, and installing in advance in addition truss is also for better location, saves the time of follow-up construction, reduce operation at sea, reduce human cost.
Truss 5 sidewalls are provided with direction across bridge baffle plate 6, wherein direction across bridge baffle plate 6 by the region between truss 5 every to becoming 3 regions.Pouring after bottom concrete, is the load that make progress of weighted regions 7 can assemble fine sand and draw water in cofferdam construction to reduce time near the region of inside panel 2,
Between baffle plate 6, being binder template region 8, by fluid concrete, connecting two cushion caps 15, is exactly cushion cap binder after perfusion, during to binder template region 8 fluid concrete, should uniform and stablely pour into a mould, prevent concrete flow cause inhomogeneous.
As shown in Figure 3, on the sidewall of baffle plate 6, be provided with many baffle plate cross bars 10 and baffle plate montant 11, described baffle plate cross bar 10 is fixed on baffle plate 6 at vertical, even interval mutually with baffle plate montant 11, the object arranging is like this in order to strengthen the intensity of baffle plate 6, prevents the phenomenon of baffle plate appearance fracture, breakage in casting process.
In addition, between baffle plate 6, be also provided with Screw arbor with nut at both-ends 9, vertical two baffle plates 6 of Screw arbor with nut at both-ends 9, the object arranging is like this systematicness in maintainer beam forms region 8, prevent from, in cast baffle plate 6 power that is squeezed during binder, causing 8 distortion of binder template region, water and outpour nonstandard binder.
The construction method that double-wall cofferdam is concrete:
After a, double-wall cofferdam machine, carry out assembled, the assembled coxopodite cofferdam that completes on platform first, then weld epimerite cofferdam on coxopodite cofferdam, after having welded in cofferdam interior welds steel pipe support 13;
B, measurement and positioning device calculate the assembled coordinate data of double-wall cofferdam platform, by Coordinate Conversion, calculate the installation coordinate data under double-wall cofferdam deep water construction environment;
C, select, in low water stage, flow velocity is little, wind-force is little situation, double-wall cofferdam to be installed, by hanging device, according to coordinate data is installed, transfer double-wall cofferdam to assigned address;
D, transfer to cofferdam to entering water after floating, to symmetrical cast sword pin concrete in double-wall cofferdam, then in cofferdam, evenly pour water, make progressively sedimentation of cofferdam;
E, double-wall cofferdam enter after mud sedimentation 1m, start to the space fluid concrete between exterior panel 1 and inside panel 2, and the concrete of cast reaches after 50% intensity, by the earth sucking-off of surrounding inside cofferdam;
F, integral ramp advance builds bottom concrete, from downstream, starts upstream to hold propelling, by feed supplement several times, reaches design elevation;
G, built after bottom concrete, in baffle plate 6 outside back-up sands, then closed linker, the water in steel cofferdam has been drained.After having drawn water, cut off the extension leg on steel casing 12 and wall body.Colligation cushion cap reinforcing bar, builds first floor cushion cap 15.
The utility model, by cofferdam truss is processed and transferred together with cofferdam, has reduced engineering difficulty, has improved operating efficiency; The load making progress when baffle plate exterior lateral area adopts the construction technology solution of back-up sand counterweight to draw water, baffle plate has played the effect of binder template and back-up sand dividing plate, without inserted to play auxiliary pile, has simplified construction technology, has saved construction cost.

Claims (5)

1. the Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction, comprise exterior panel (1), inside panel (2), sword sole (4), described exterior panel (1), inside panel (2) bottom connect by sword sole (4), between exterior panel (1) and inside panel (2), be provided with strutbeam (3), it is characterized in that: also comprise two truss structures (5) and two baffle plates (6), described two truss structures (5) are symmetricly set in the central bottom of the rectangular configuration that inside panel (2) surrounds into, and truss (5) two ends are vertically welded on inside panel (2); Described two baffle plates (6) are symmetrically distributed between truss (5), and the space between truss (5) is divided into three regions; Three described regions comprise two binder template regions (8) that are connected both sides cushion cap near inside panels (2), equal and opposite in direction and symmetrical weighted regions (7) and centre.
2. a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction as claimed in claim 1, is characterized in that: in described weighted regions (7), fill fine sand; The described interior fluid concrete in binder template region (8).
3. a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction as claimed in claim 1, is characterized in that: on described two baffle plates (6), be provided with baffle plate cross bar (10) and baffle plate montant (11); Described baffle plate cross bar (10) and baffle plate montant (11) are mutually vertical and be evenly distributed on the side of baffle plate (6).
4. a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction as claimed in claim 3, is characterized in that: the Screw arbor with nut at both-ends (9) that is at least provided with two vertical baffles (6) between described two baffle plates (6).
5. a kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction as claimed in claim 1, is characterized in that: described cofferdam is divided into upper and lower two joints.
CN201420321590.3U 2014-06-16 2014-06-16 A kind of Double-Wall Steel Boxed Cofferdam with binder deep water bearing platform construction Active CN204000905U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544581A (en) * 2015-12-10 2016-05-04 中铁大桥局集团有限公司 Construction method of dumbbell type bearing platform
CN105862892A (en) * 2016-05-31 2016-08-17 中铁五局集团有限公司 Double-walled steel cofferdam
CN107989054A (en) * 2017-12-08 2018-05-04 中国铁建港航局集团有限公司 It is a kind of applied to underwater flush type cushion cap without bottom concrete steel lifted trunk structure
CN111042144A (en) * 2019-12-27 2020-04-21 中冶天工集团有限公司 Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544581A (en) * 2015-12-10 2016-05-04 中铁大桥局集团有限公司 Construction method of dumbbell type bearing platform
CN105862892A (en) * 2016-05-31 2016-08-17 中铁五局集团有限公司 Double-walled steel cofferdam
CN107989054A (en) * 2017-12-08 2018-05-04 中国铁建港航局集团有限公司 It is a kind of applied to underwater flush type cushion cap without bottom concrete steel lifted trunk structure
CN111042144A (en) * 2019-12-27 2020-04-21 中冶天工集团有限公司 Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region
CN111042144B (en) * 2019-12-27 2022-05-13 中冶天工集团有限公司 Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region

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