CN102979038A - Cast-in-place box beam mobile bracket with increased width - Google Patents
Cast-in-place box beam mobile bracket with increased width Download PDFInfo
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- CN102979038A CN102979038A CN201210534115XA CN201210534115A CN102979038A CN 102979038 A CN102979038 A CN 102979038A CN 201210534115X A CN201210534115X A CN 201210534115XA CN 201210534115 A CN201210534115 A CN 201210534115A CN 102979038 A CN102979038 A CN 102979038A
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Abstract
The invention discloses a cast-in-place box beam mobile bracket with an increased width. The cast-in-place box beam mobile bracket is characterized by mainly comprising a bearing platform, a cantilever beam, a left strut, a middle strut, a right strut, a left beam, a middle beam, a right beam and a mould base, wherein the cantilever beam is horizontally arranged on the bearing platform; the left strut, the middle strut and the right strut are arranged on the cantilever beam; the left beam, the middle beam and the right beam can drive scroll wheels through a motor so as to drive the mould base to longitudinally move; and the left beam and the right beam drive a left template frame and a right template frame to transversely move along a sliding rail by using a hydraulic jack. By the above structure form, the problem that conventional mobile brackets cannot be used on a super-wide box beam and a box beam with variable widths is solved; the aim of width variable construction is realized through adjusting the width of a middle beam top bracket; an integrated cantilever beam is used as a cantilever bearing structure on the bearing platform, so that the bearing capacity of a cantilever is strengthened; the middle beam and an upper template of the middle beam are unnecessary to be moved transversely, so that only the side beams on both sides and the mould base are necessary to be moved when the width is changed.
Description
Technical field
The present invention relates to a kind of cast-in-situ box girder traversing carriage, specifically a kind of wide cut cast-in-situ box girder traversing carriage that broadens.
Background technology
Wide dark riverine expressway highway Shenzhen Section the 3rd contract section, case beam waters of living in depth of water when slack tide is about 6m, the cushion cap face of its pier stud is in more than the water surface.According to situations such as construction period, costs, right width of cloth 72#-86# pier 14 is striden totally, and left width of cloth 78#-90# pier totally 12 is striden the case beam and need be adopted mobile formwork to construct.This two parts case beam is bend, the inclination structure that broadens, and deck-siding is 24.01m to the maximum, and deck-siding progressively diminishes along building direction, and it is 5.0m that deck-siding changes the maximum.The pier stud Breadth Maximum is about 14m, and the case beam both sides inclination discrepancy in elevation is 48cm to the maximum.The case beam vertically is provided with the unidirectional gradient, and its rear and front end longitudinal gradient discrepancy in elevation maximum is about 1.2m.Case beam and pier stud direction across bridge form of structure are seen Fig. 1.Different from the box-beam structure that adopted Construction Through Form on Traveler in the past, this two parts case beam and corresponding pier stud, its structure width is large, structural change is many, complex structure, and is poor with mobile formwork coupling, adaptability, adopts the difficulty of Construction Through Form on Traveler quite large.
Existing technical literature discloses " traversing carriage cast-in-situ simple supported box beam construction Design of Construction Organization ", and the traversing carriage design principle: two straddle type traversing carriages are the equipment for bridge constructions that manufacture and design for the construction that satisfies Line for Passenger Transportation 32m, 24m simple supported box beam cast-in-situ.Traversing carriage can carry out assembly unit, beam processed between any two bridge piers, finish bridge superstructure at the bridge pier cast-in-situ beam-making.This supporting system in column, passes through the column power transmission in cushion cap by the power transmission of shellfish thunder sheet afterwards.By the repeated combination of supporting system is used, realize to the concrete beam cast-in-situ, by the construction of Kong Chengqiao.The machine has that equipment is simple, cost is relatively cheap, constructing operation is convenient, take that the construction plant is few, its via hole is quick, becomes to stride conveniently, improved whole bridging speed, saves the characteristics such as equipment investment.The brief introduction of traversing carriage design scheme: the traversing carriage engineering method has that operation procedure is clear, structure stress is clear and definite, support intensity is higher, economy, turnaround speed are fast, be convenient to carry out the characteristics such as parallel line production.Primary structure has: column, sand cylinder, top rail, longeron, bottom side form and support, internal mold and support.Traversing carriage column and shellfish thunder sheet are installed to adopt and are manually cooperated the crane construction, and internal mold adopts the automatic sliding system, and positioning is accurate, safety.The traversing carriage technical data: construction girder span 32m, 24m, whenever stride beam weight≤900t; Adapt to maximum longitudinal grade≤3%, horizontal wall inscription≤4%; The main structure system: two straddle type traversing carriage longerons adopt individual layer reinforced shellfish thunder sheet (321 type 16Mnl-3000mm, 321 type 16Mnl-2500mm); Outer modular system: the exterior sheathing system is comprised of nonstandard template, standard form and support.Wherein the every segment length of standard form is 2 meters and joins work.Every template has bolt to connect horizontal and vertical, and its skeleton is formed by i iron and angle steel assembly welding.The arch camber line style is carried out arch camber by the second-degree parabola feature.Side form and bed die arch camber must be the same arch camber amounts of same line style.For guaranteeing safety in the construction, template is provided with movable platform and railing.When 32m, 24m stride the beam length conversion, only need the standard form extraction is got final product; Inner formwork system: inner formwork system is comprised of inner formword, track, spiral strut etc.The inner formword system is comprised of nonstandard template, standard form, support.Wherein the every segment length of standard form is 4 meters.Every template has bolt to connect horizontal and vertical, and its skeleton is formed by steel plate muscle rib and channel-section steel assembly welding, plate thickness 6mm.Above-mentioned mobile formwork is made the as a whole width of cloth that can not broaden, although realized the technique of mobile formwork cast-in-place construction, can not adapt to the construction that becomes wide box girder.
Summary of the invention
In order to overcome above-mentioned deficiency, the purpose of patent of the present invention is to provide the high wide cut of a kind of efficiency of construction cast-in-situ box girder traversing carriage that broadens.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
The wide cut cast-in-situ box girder traversing carriage that broadens, it mainly contains cushion cap, Cantilever Beams, left side pillar, B-C post, the right pillar, left side beam, central sill, the right beam and mould bases and consists of, described Cantilever Beams level is located on the cushion cap, described left side pillar, B-C post and the right pillar are located on the Cantilever Beams, left side beam, central sill, the right beam are located at respectively on the slide rail at top of left side pillar, B-C post and the right pillar, to being connected to front launching nose, its rear end is respectively to being connected to back launching nose respectively for the front end of described left side beam, central sill and the right beam; Mould bases is to be made of left side template frame, bed die grillage and right side template frame, left side template frame, bed die grillage and right side template frame are located at respectively on left side beam, central sill, the right beam, described left side beam, central sill, the right beam can drive mould bases by the motor-driven roller and vertically move, and left side beam, the right beam can drive left side template frame and right side template frame transverse shifting along slide rail by hydraulic jack.
Described Cantilever Beams is to be formed by connecting by rod member by two parts girder cushion cap both sides that are placed in.
Be provided with cushion block between described Cantilever Beams and the cushion cap, can regulate the depth of beam of encorbelmenting by the thickness that changes cushion block.
Also be provided with anti-tension fixing apparatus between described Cantilever Beams and the cushion cap.
Described left side pillar, B-C post, the right pillar adopt the form of structure of steel casing, and described Cantilever Beams is provided with a plurality of bearings, and the lower end of left side pillar, B-C post, the right pillar is separately fixed on the corresponding bearing.
Described mould bases is the steel pipe support structure.
Beneficial effect of the present invention is: because above-mentioned form of structure, solved the difficult problem that traditional mobile formwork can not use at super wide case beam, change width case beam, by traversing side bar realize the broadening purpose of width of cloth construction; Adopted the monolithic Cantilever Beams as the cantilever bearing structure at cushion cap, the cantilever supporting capacity is strengthened; Whole Cantilever Beams, pier construction replace the high bracket structure of separate type, have greatly saved the support material requested, have reduced construction cost; The formwork structure of freestanding limit, central sill has replaced the monolithic formwork structure, and the width of cloth is laid a good foundation in order to broaden; By left side beam, central sill, the right beam steel main beam structure as traversing carriage, replaced the traversing carriage of shellfish thunder sheet assembly unit, significantly improved supporting capacity; Adopt cushion block to support Cantilever Beams, by the kind of cushion block and vertical discrepancy in elevation of quantity regulating case beam.By the successful utilization of above measure, efficiently solve traditional traversing carriage difficult problem that the horizontal and vertical discrepancy in elevation is regulated in box girder construction.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 be shown in Figure 1 along A to lateral view.
Among the figure: 1, pile foundation; 2, cushion cap; 3, Cantilever Beams; 4, left side pillar; 5, B-C post; 6, the right pillar; 7, left side beam; 8, central sill; 9, the right beam; 10, mould bases; 11, slide rail; 12, left side template frame; 13, bed die grillage; 14, right side template frame; 15, jack; 16, cushion block; 17, the anti-fixing apparatus of straining; 18, bearing; 19, front launching nose; 20, back launching nose.
The specific embodiment
Present embodiment is case beam and the pier stud direction across bridge structural profile schematic diagram that wide dark riverine expressway highway Shenzhen Section the 3rd contract section adopts.This section case beam waters of living in depth of water when slack tide is about 6m, and the cushion cap face of its pier stud is in more than the water surface, so that right width of cloth 72#-86# pier 14 strides totally, and left width of cloth 78#-90# pier totally 12 is striden the case beam and need be adopted mobile formwork to construct.This two parts case beam is bend, the inclination structure that broadens, and deck-siding is 24.01m to the maximum, and deck-siding progressively diminishes along building direction, and it is 5.0m that deck-siding changes the maximum.The pier stud Breadth Maximum is about 14m, and the case beam both sides inclination discrepancy in elevation is 48cm to the maximum.The case beam vertically is provided with the unidirectional gradient, and its rear and front end longitudinal gradient discrepancy in elevation maximum is about 1.2m.This two parts case beam and corresponding pier stud, its structure width is large, structural change is many, complex structure, and is poor with mobile formwork coupling, adaptability, adopts the difficulty of Construction Through Form on Traveler quite large.Therefore, in this contract section, for the problem of Construction Through Form on Traveler characteristics and existence, adopt traversing carriage to construct.
Such as Fig. 1, shown in 2, the wide cut cast-in-situ box girder traversing carriage that broadens, it mainly contains pile foundation 1, cushion cap 2, Cantilever Beams 3, left side pillar 4, B-C post 5, the right pillar 6, left side beam 7, central sill 8, the right beam 9 and mould bases 10 consist of, cushion cap 2 is located on the pile foundation 1, described Cantilever Beams 3 levels are located on the cushion cap 2, described left side pillar 4, B-C post 5 and the right pillar 6 are located on the Cantilever Beams 3, left side beam 7, central sill 8, the right beam 9 is located at respectively left side pillar 4, on the slide rail 11 at the top of B-C post 5 and the right pillar 6, described left side beam 7, to being connected to front launching nose 19, its rear end is respectively to being connected to back launching nose 20 respectively for the front end of central sill 8 and the right beam 9.Described mould bases 10 is the steel pipe support structure, mould bases 10 is that left side template frame 12, bed die grillage 13 and right side template frame 14 are spliced, left side template frame 12, bed die grillage 13 and right side template frame 14 are located at respectively on left side beam 7, central sill 8, the right beam 9, described left side beam 7, central sill 8, the right beam 9 drive mould bases by longitudinal-moving device along slide rail 11 and vertically move, and left side beam 7, the right beam 9 can drive left side template frame and right side template frame transverse shifting along slide rail by Traverse Displacement Unit.Traverse Displacement Unit is comprised of slide block and draw-gear.Slide block placing steel beam bottom, major part is thick 20mm steel plate, draw-gear is feed-through hydraulic continuous jack 15.Longitudinal-moving device: vertical shift utilizes self-powered roller system to carry out.Power is the 1.5kw motor.
Described Cantilever Beams 3 is to be formed by the junction plate docking by two parts.Be provided with cushion block 16 between Cantilever Beams 3 and the cushion cap 2, can regulate the depth of beam of encorbelmenting by the thickness that changes cushion block 16.Also be provided with anti-tension fixing apparatus 17 between Cantilever Beams 3 and the cushion cap 2.
Described left side pillar 4, B-C post 5, the right pillar 6 adopt the form of structure of steel casing, and described Cantilever Beams 3 is provided with a plurality of bearings 18, and the lower end of left side pillar 4, B-C post 5, the right pillar 6 is separately fixed on the corresponding bearing 18.
Above-mentioned each member suitable length that forms, single-piece weight is suitable, is conducive to assembly unit, transportation, dismounting, stable action, safety, quick construction, the recycling rate of waterused of parts is high.
In addition, in the dismantle processes of support infrastructure improvement has been arranged also, specifically: traditional mobile formwork bottom bracing structure utilizes crane barge to carry out the lifting work of demolition, installation.The difficult point of demolition, installation work is the pillar dismounting, and this causes crane barge not have enough operating spaces to finish lifting operation because pillar is removed need to carry out below watering the case beam.The Novel movable form frame system utilizes the hanging devices such as hoist engine and Chain block, adopts to swing to move with the mode such as slippage pillar is shifted out cushion cap, transfers to workboat, and then utilizes crane barge to finish its installation work.Quarter line pillaring is in case beam wing plate below, and its dismounting work has certain operating space.Therefore, the quarter line pillaring utilization is located at hoist engine on the beam as lifting device, pillar is carried out relay-type swing and move, and finishes its dismounting work.
Operating principle: the utilization of C class traversing carriage is supported on lower support system on the cushion cap as support, utilizes the beam system to bear the cast load of case beam girder span structure, utilizes form frame system to carry out the box beam concrete pouring construction as support and template.The reach mode of mobile formwork is, utilizes freighter as delivery vehicle, and the lower support System Construction is dragged to freighter, with the next Dun Chu of iron barge shipping to mould bases reach direction, the lower support system dragged to cushion cap install again.In such a way one by one with lower support System Construction alternating forward to the next cushion cap, beam system and top mold frame System Construction thereof be by cross reach in the lower support system.The reach of beam body realizes by traversing and vertical shift, the first traversing again vertical shift of beam body structure, and the traversing jack application of force of utilizing adopts slip mode to carry out; Vertical shift utilizes self-powered roller system to carry out.
In a word; although the present invention has enumerated above-mentioned preferred embodiment, should illustrate, although those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (7)
1. wide cut cast-in-situ box girder traversing carriage that broadens, it is characterized in that: it mainly contains cushion cap, Cantilever Beams, left side pillar, B-C post, the right pillar, left side beam, central sill, the right beam and mould bases and consists of, described Cantilever Beams level is located on the cushion cap, described left side pillar, B-C post and the right pillar are located on the Cantilever Beams, left side beam, central sill, the right beam are located at respectively on the slide rail at top of left side pillar, B-C post and the right pillar, to being connected to front launching nose, its rear end is respectively to being connected to back launching nose respectively for the front end of described left side beam, central sill and the right beam; Mould bases is to be made of left side template frame, bed die grillage and right side template frame, left side template frame, bed die grillage and right side template frame are located at respectively on left side beam, central sill, the right beam, described left side beam, central sill, the right beam can drive mould bases by the motor-driven roller and vertically move, and left side beam, the right beam can drive left side template frame and right side template frame transverse shifting along slide rail by hydraulic jack.
2. the wide cut according to claim 1 cast-in-situ box girder traversing carriage that broadens is characterized in that: described Cantilever Beams is to be formed by connecting by rod member by two parts girder cushion cap both sides that are placed in.
3. a kind of wide cut according to claim 2 cast-in-situ box girder traversing carriage that broadens is characterized in that: be provided with cushion block between described Cantilever Beams and the cushion cap, can regulate the depth of beam of encorbelmenting by the thickness that changes cushion block.
4. the wide cut according to claim 3 cast-in-situ box girder traversing carriage that broadens is characterized in that: also be provided with anti-tension fixing apparatus between described Cantilever Beams and the cushion cap.
5. the wide cut according to claim 4 cast-in-situ box girder traversing carriage that broadens, it is characterized in that: described left side pillar, B-C post, the right pillar adopt the form of structure of steel casing, described Cantilever Beams is provided with a plurality of bearings, and the lower end of left side pillar, B-C post, the right pillar is separately fixed on the corresponding bearing.
6. the wide cut according to claim 1 cast-in-situ box girder traversing carriage that broadens, it is characterized in that: described central sill is the inside box-structure with ribbing, cross sectional dimensions 1.94m * 1.6m; Described left side beam and the right beam the inside box-structure with ribbing, cross sectional dimensions 1.6m * 1.1m.
7. the wide cut according to claim 1 cast-in-situ box girder traversing carriage that broadens, it is characterized in that: described mould bases is the steel pipe support structure.
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| CN201210534115XA CN102979038A (en) | 2012-12-12 | 2012-12-12 | Cast-in-place box beam mobile bracket with increased width |
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| CN201210534115XA CN102979038A (en) | 2012-12-12 | 2012-12-12 | Cast-in-place box beam mobile bracket with increased width |
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Cited By (8)
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| CN104074142A (en) * | 2014-07-11 | 2014-10-01 | 四川川交路桥有限责任公司 | Box beam cast-in-place support whole-horizontal-moving construction method |
| CN104499434A (en) * | 2014-12-16 | 2015-04-08 | 中铁大桥局集团有限公司 | Movable formwork for casting of wide-body box girder and construction method |
| CN106120563A (en) * | 2016-07-14 | 2016-11-16 | 德州市公路工程总公司 | Cast-in-situ box girder Combined movable mould bases and construction method thereof |
| CN107100086A (en) * | 2017-06-20 | 2017-08-29 | 山东恒堃机械有限公司 | Passing method and mistake aperture apparatus of a kind of mobile formwork in ultra-wide pier |
| CN108978500A (en) * | 2018-06-25 | 2018-12-11 | 德州市公路工程总公司 | Wide-span case beam cantilever assembly prestress composite carrier system and construction method |
| CN109338896A (en) * | 2018-11-28 | 2019-02-15 | 中国铁建大桥工程局集团有限公司 | A kind of wide cut concrete PK box beam bracket system construction method |
| CN110847045A (en) * | 2019-11-20 | 2020-02-28 | 成都建工路桥建设有限公司 | Large-spread-arm bent cap self-propelled portal template system for urban viaduct and construction method |
| CN113957807A (en) * | 2021-12-06 | 2022-01-21 | 中铁四局集团有限公司 | Adjustable width moving die carrier structure suitable for cast-in-place construction of curve bridge |
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| CN104499434A (en) * | 2014-12-16 | 2015-04-08 | 中铁大桥局集团有限公司 | Movable formwork for casting of wide-body box girder and construction method |
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| CN107100086A (en) * | 2017-06-20 | 2017-08-29 | 山东恒堃机械有限公司 | Passing method and mistake aperture apparatus of a kind of mobile formwork in ultra-wide pier |
| CN108978500A (en) * | 2018-06-25 | 2018-12-11 | 德州市公路工程总公司 | Wide-span case beam cantilever assembly prestress composite carrier system and construction method |
| CN109338896A (en) * | 2018-11-28 | 2019-02-15 | 中国铁建大桥工程局集团有限公司 | A kind of wide cut concrete PK box beam bracket system construction method |
| CN109338896B (en) * | 2018-11-28 | 2020-12-01 | 中国铁建大桥工程局集团有限公司 | Construction method of broad-width concrete PK box girder support system |
| CN110847045A (en) * | 2019-11-20 | 2020-02-28 | 成都建工路桥建设有限公司 | Large-spread-arm bent cap self-propelled portal template system for urban viaduct and construction method |
| CN113957807A (en) * | 2021-12-06 | 2022-01-21 | 中铁四局集团有限公司 | Adjustable width moving die carrier structure suitable for cast-in-place construction of curve bridge |
| CN113957807B (en) * | 2021-12-06 | 2024-05-14 | 中铁四局集团有限公司 | Width-adjustable movable formwork structure suitable for cast-in-situ construction of curve bridge |
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Application publication date: 20130320 |