CN103362074B - Bridge cantilever box girder construction hanging basket pre-pressing loading device - Google Patents
Bridge cantilever box girder construction hanging basket pre-pressing loading device Download PDFInfo
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- CN103362074B CN103362074B CN201310327596.1A CN201310327596A CN103362074B CN 103362074 B CN103362074 B CN 103362074B CN 201310327596 A CN201310327596 A CN 201310327596A CN 103362074 B CN103362074 B CN 103362074B
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Abstract
The invention discloses a bridge cantilever box girder construction hanging basket pre-pressing loading device, which comprises a suspended truss, a suspended truss track, a pair of outer sliding girders, an upper cross girder, a suspended truss track movable trolley, a bottom die supporting frame and a plurality of suspended barrels; water is injected into the suspended barrels respectively; the suspended truss is supported against the suspended truss track; the suspended truss track is supported against a cast bridge cantilever box girder section through a plurality of rows of track bearing girders; the bottom die supporting frame comprises a plurality of lower longitudinal girders, and a front lower cross girder and a rear lower cross girder which are fixedly connected with the front and rear ends of the lower longitudinal girders; the two ends of the bottom die supporting frame are suspended below the suspended truss respectively; and the suspended barrels in which the water is injected are suspended below the front lower cross girder. According to the device, the pressing load of the bridge cantilever box girder to be cast on the bottom die supporting frame is simulated by using the water injection suspended barrels suspended below the front lower cross girder, and sectional loading can be flexibly realized; the device is low in use cost and can be repeatedly used, the load simulation test period can be shortened greatly, and the load simulation test cost can be reduced.
Description
Technical field
The present invention relates to a kind of hanging basket device of bridge cantilever beam Cast-in-Situ Segment, particularly a kind of device Hanging Basket being carried out to precompressed loading before bridge cantilever beam cast-in-place section construction, belongs to technical field of bridge construction.
Background technology
The operation platform of work high above the ground when suspension type Hanging Basket is bridge upper cantilever arm construction of cast-in-place box girders, comprise the suspension truss on the upside of the bridge cantilever case beam section termination that is arranged on and built and be arranged on the bed die support frame on the downside of the bridge cantilever beam section termination of having built, connected by suspension rod between the two.Suspension type Hanging Basket can replace the steel pipe support and large-scale vertical and horizontal transport facility upwards set up from ground, impact by adverse circumstances such as current, Gao Dun, valleys in construction is less, especially during bridge crossing construction, do not need to set up the steel pipe support disconnecting traffic under bridge, limited space can also be made full use of, the assembly and disassembly of suspension type Hanging Basket are all more convenient, can repeatedly use, greatly reduce construction cost.
Hanging Basket is when practice of construction loading, and its elastic deformation must meet technology and safety requirements.Therefore need to detect under the Action of Gravity Field will building bridge cantilever case beam section, the deflection value of the forward and backward lower transverse beam elastic deformation of bed die support frame, so that before actual pouring construction, by the deflection value that will produce, rightabout distortion is done to forward and backward lower transverse beam, makes the girder cantilever case beam section of building can not produce the quality problems of appearance deformation and dimension overproof.Therefore, before cast-in-situ bridge cantilever boxgirder section, need to load Hanging Basket simulation precompressed, the deformation deflection value produced after simulation precompressed loads with the forward and backward lower transverse beam detecting bed die support frame.At present, Hanging Basket precompressed loads to adopt places multiple sand pocket or weight to simulate the practice of construction load of Hanging Basket at bed die support frame, and this method load time is slow, and equipment requirement is high, and cost is larger.
Summary of the invention
The object of this invention is to provide the bridge cantilever box girder construction Hanging Basket precompressed charger that a kind of structure is simple, be convenient to load and have enough to meet the need use.
The present invention is achieved by the following technical programs:
A kind of bridge cantilever box girder construction Hanging Basket precompressed charger, comprise and hang truss, suspension truss track, externally sliding beam, top rail, trolley frame, bed die support frame and several suspention bucket injecting water respectively, described suspension truss is the two panels rhombus hinged frame that front upper end is connected by top rail, and on the downside of described rhombus hinged frame, rear and front end is hinged with front hinged seat, rear hinged seat respectively; At least one roller is respectively equipped with on the downside of described front hinged seat, rear hinged seat, described roller is inlaid in respectively and hangs upside in truss track, hang truss track to be supported on by many row's track bearing beams and to water in bridge cantilever case beam section, on the downside of suspension truss, rear end is anchor rod anchoredly being watered in bridge cantilever case beam section by several afterwards; One external sliding beam is horizontally set on respectively and has watered on bridge cantilever case beam section two sides, and be bearing on the roller in trolley frame in the middle part of outer sliding beam, trolley frame suspension rod upper end is anchored at waters in bridge cantilever case beam section, and trolley frame suspension rod lower end is fixedly connected with trolley frame; Described bed die support frame comprises many lower longerons, to be arranged on the downside of many lower longerons and the front lower transverse beam that is fixedly connected with of longeron front and back end lower to many and rear lower transverse beam respectively, many front suspension rod upper ends are supported on top rail respectively by upper bearing beam, many front suspension rod lower ends are each passed through front lower transverse beam, are separately fixed on bed die support frame front end by suspension rod nut; Wherein an external sliding beam outer end is held respectively by suspension rod nut in two front suspension rod lower ends, and rear suspension bar upper end is supported on respectively by lower template beam and is watering under bridge cantilever case beam section on side box wall, and rear lower transverse beam two ends are held respectively by suspension rod nut in rear suspension bar lower end; Under suspention both sides, bucket upper end are suspended on front lower transverse beam respectively by the suspention bucket suspension rod of correspondence, the suspention bucket weight sum of several injection water equals the weight of the bridge cantilever box girder webs end that bed die support frame will support.
Object of the present invention can also be realized further by following technical measures.
Aforesaid bridge cantilever box girder construction Hanging Basket precompressed charger, peak level liquid level place, wherein said suspention bucket upper end is provided with drain hole, suspention bucket lower end is provided with discharging valve, is provided with the operating platform that shaped steel is welded in suspention bucket upper end, is provided with vertical ladder outside suspention bucket.
Structure of the present invention is simple, easy to use.Simulate with the several water fillings suspention buckets be suspended under front lower transverse beam the bridge cantilever case beam that will build and load is pressed down to bed die support frame, segmentation can be realized neatly load, namely respectively by pressing down 20%, 40%, 60% of load ... until press down 120% of load, increase the water injection rate to suspention bucket stage by stage, survey and aforementionedly different press down the different deflection values that the front lower transverse beam of bed die support frame produces under load, provide reliable foundation to the allowance for camber deflection of front lower transverse beam.Place multiple sand pocket or weight Measures compare with existing at bed die support frame, use cost of the present invention is low and reusable, substantially reduces the simulation loading test period, reduces simulation loading experimentation cost.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
Fig. 2 is the amplification schematic top plan view of suspention bucket.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The present embodiment, by being suspended on the water filling of 3 under lower transverse beam before bed die support frame suspention bucket, being simulated the bridge cantilever case beam that will build and is pressed down load to bed die support frame.The weight M that must meet after determining to suspend the water filling of bucket in midair by following formula, then determines the water filling height H of suspending bucket in midair.
Can following formula be drawn according to statics principle of moment balance:
3MY=XN is namely: M=XN/3Y,
Thus can obtain: H=1.2 × 4(M-G)/π D2
In formula, N: need precompressed weight namely will build bridge cantilever case beam section weight (t),
X: grappling center A to front fulcrum B distance (m) after Hanging Basket,
Y: front fulcrum B to front suspension rod centre distance (m),
M: the weight (t) of water filling rear overhang well-bucket,
H: water filling height (m) in suspention bucket,
G: the deadweight (t) of suspention bucket,
D: the internal diameter (m) of suspention bucket.
As depicted in figs. 1 and 2, the present embodiment comprise hang truss 1, externally sliding beam 3, top rail 4, trolley frame 5, bed die support frame 6 and 3 inject the suspention bucket 9 of water respectively to hang truss track 2, hanging truss 1 is the two panels rhombus hinged frame 11 that front upper end is connected by top rail 4, is provided with the middle vertical rod 111 of stable support rhombus hinged frame 11 in the middle part of rhombus hinged frame 11; On the downside of rhombus hinged frame 11, rear and front end is hinged with front hinged seat 12, rear hinged seat 13 respectively.A roller 131 on the downside of front hinged seat 12, two rollers 131 on the downside of rear hinged seat 13 are inlaid in the interior upside of suspension truss track 2 that i iron is made respectively, hang truss track 2 to be supported on by many row's track bearing beams 21 and to water in bridge cantilever case beam section 100, to hang on the downside of truss 1 rear end and be anchored at by anchor pole 14 after 4 and water in bridge cantilever case beam section 100.Hang truss 1 to move forward and backward along suspension truss track 2 by the several rollers 131 on the downside of it, to adjust many front suspension rods 7 and the distance of watering bridge cantilever case beam section 100 end face, be convenient to connect bed die support frame 6.
One external sliding beam 3 is horizontally set on respectively and has watered on bridge cantilever case beam section 100 two sides, and be bearing on the roller in trolley frame 5 in the middle part of outer sliding beam 3, trolley frame suspension rod 51 is anchored at and waters in bridge cantilever case beam section 100, and lower end is fixedly connected with trolley frame 5.After the stretch-draw completing one section of bridge cantilever case beam completes, hanging truss 1 needs to move forward together with the suspension truss track 2 bottom it, now pulls outer sliding beam 3 to move on to new position the roller supporting of trolley frame 5 is lower outside by front suspension rod 7.
Bed die support frame 6 comprises many lower longerons 61, to be arranged on the downside of many lower longerons 61 and longeron 61 front and back end lower to many is fixedly connected with front lower transverse beam 62 and rear lower transverse beam 63 respectively, many front suspension rod 7 upper ends are supported on top rail 4 by upper bearing beam 8 respectively, lower end is each passed through front lower transverse beam 62, holds front lower transverse beam 62 two ends respectively by suspension rod nut 71; Wherein external sliding beam 3 outer end is held respectively by suspension rod nut 71 in two front suspension rod 7 lower ends, rear suspension bar 20 upper end is supported on respectively by lower template beam 201 is watering on bridge cantilever case beam section 100 times side box walls 101, rear lower transverse beam 63 two ends are held respectively by suspension rod nut 71 in lower end, like this, bed die support frame 6 front and back end is suspended on respectively and hangs on truss 1.
The suspention bucket suspension rod 91 that both sides, three suspention bucket 9 upper ends are arranged respectively by correspondence is suspended on front lower transverse beam 62 times, and suspention bucket suspension rod 91 is connected with suspention bucket 9 upper end by the connector 96 of its lower end.The suspention bucket 9 weight sum of 3 injection water equals the weight of the bridge cantilever box girder webs end that bed die support frame 6 will support, to guarantee the accuracy to the test of bed die support frame 6 simulation loading.Suspention peak level liquid level place, bucket 9 upper end is provided with drain hole 92, can not overflow when guaranteeing suspention bucket 9 water filling; Lower end is provided with discharging valve 93, can regulate the water level in suspention bucket 9.The operating platform 94 that shaped steel is welded into is provided with in suspention bucket 9 upper end, be provided with vertical ladder 95 outside suspention bucket 9, be provided with front platform 200 on front side of bed die support frame 6, rear side is provided with rear platform 300, these facilities be both convenient to workman's construction, provided safety guarantee again to construction worker.In Fig. 1, two upper lateral parts of bed die support frame 6 have hung up properly side template 400.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (2)
1. a bridge cantilever box girder construction Hanging Basket precompressed charger, comprise and hang truss, suspension truss track, externally sliding beam, top rail, trolley frame and bed die support frame, described suspension truss is the two panels rhombus hinged frame that front upper end is connected by top rail, and on the downside of described suspension truss, rear and front end is hinged with front hinged seat, rear hinged seat respectively; Be respectively equipped with at least one roller on the downside of described front hinged seat, rear hinged seat, described roller is inlaid in respectively and hangs upside in truss track; Hang truss track to be supported on to water in bridge cantilever case beam section by arranging track bearing beam more, on the downside of rhombus hinged frame, rear end is anchor rod anchoredly being watered in bridge cantilever case beam section by several afterwards; One external sliding beam is horizontally set on respectively and has watered on bridge cantilever case beam section two sides, and be bearing on the roller in trolley frame in the middle part of outer sliding beam, trolley frame suspension rod upper end is anchored at waters in bridge cantilever case beam section, and trolley frame suspension rod lower end is fixedly connected with trolley frame; Described bed die support frame comprises many lower longerons, to be arranged on the downside of many lower longerons and the front lower transverse beam that is fixedly connected with of longeron front and back end lower to many and rear lower transverse beam respectively, many front suspension rod upper ends are supported on top rail respectively by upper bearing beam, many front suspension rod lower ends are each passed through front lower transverse beam, are separately fixed on bed die support frame front end by suspension rod nut; Wherein an external sliding beam outer end is held respectively by suspension rod nut in two front suspension rod lower ends, and rear suspension bar upper end is supported on respectively by lower template beam and is watering under bridge cantilever case beam section on side box wall, and rear lower transverse beam two ends are held respectively by suspension rod nut in rear suspension bar lower end; It is characterized in that, also comprise several suspention bucket injecting water respectively, under suspention both sides, bucket upper end are suspended on front lower transverse beam respectively by the suspention bucket suspension rod of correspondence, the suspention bucket weight sum of several injection water equals the weight of the bridge cantilever box girder webs end that bed die support frame will support.
2. bridge cantilever beam construction hanging basket as claimed in claim 1 loads checkout gear, it is characterized in that, peak level liquid level place, described suspention bucket upper end is provided with drain hole, suspention bucket lower end is provided with discharging valve, be provided with the operating platform that shaped steel is welded in suspention bucket upper end, outside suspention bucket, be provided with vertical ladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310327596.1A CN103362074B (en) | 2013-07-31 | 2013-07-31 | Bridge cantilever box girder construction hanging basket pre-pressing loading device |
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| CN201310327596.1A CN103362074B (en) | 2013-07-31 | 2013-07-31 | Bridge cantilever box girder construction hanging basket pre-pressing loading device |
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| CN103362074A CN103362074A (en) | 2013-10-23 |
| CN103362074B true CN103362074B (en) | 2015-07-01 |
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| CN201310327596.1A Expired - Fee Related CN103362074B (en) | 2013-07-31 | 2013-07-31 | Bridge cantilever box girder construction hanging basket pre-pressing loading device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952982B (en) * | 2014-05-13 | 2015-12-02 | 中交二航局第三工程有限公司 | Bridge box and beam Hanging Basket anchorage rod-pulling type jack prepressing device and preloading method |
| CN104294767B (en) * | 2014-10-30 | 2016-04-06 | 中国水利水电第五工程局有限公司 | A kind of semi girder cast-in-place construction spreading Hanging Basket and construction method thereof |
| CN104631343B (en) * | 2015-02-15 | 2016-08-24 | 河海大学 | From traveling rhombus keying cradle in truss type structure and suspended basket and construction method |
| CN105002833B (en) * | 2015-07-25 | 2016-10-12 | 西安科技大学 | Suspension Hanging Basket preloading method |
| CN112921829B (en) * | 2021-03-15 | 2022-11-15 | 陕西华山路桥集团有限公司 | Prepressing device for overpass bridge hanging basket construction and prepressing loading method thereof |
| CN113430953B (en) * | 2021-07-28 | 2022-10-28 | 江苏瑞沃建设集团有限公司 | Pre-compaction device of hanging basket for cantilever construction bridge support |
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| ES2435505B1 (en) * | 2011-11-30 | 2014-09-23 | Rubrica Ingenieria Y Arquitectura, S.L. | WORK FOR EXECUTION OF WORKS |
| CN103088759A (en) * | 2012-12-22 | 2013-05-08 | 中国建筑第七工程局有限公司 | Prestress lower longitudinal beam bridge cast-in-cantilever construction hanging basket |
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