CN105648915A - Hanging basket construction device for asymmetric arc-shaped variable cross-section thin wing plate box girder - Google Patents
Hanging basket construction device for asymmetric arc-shaped variable cross-section thin wing plate box girder Download PDFInfo
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- CN105648915A CN105648915A CN201511025753.9A CN201511025753A CN105648915A CN 105648915 A CN105648915 A CN 105648915A CN 201511025753 A CN201511025753 A CN 201511025753A CN 105648915 A CN105648915 A CN 105648915A
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- truss
- variable cross
- main
- triangle
- hanging basket
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Abstract
Disclosed is a hanging basket construction device for an asymmetric arc-shaped variable cross-section thin wing plate box girder. A hanging basket is composed of girder surface triangular main trusses, a bearing platform, a cable-stretching system, a traveling system, an in-position anti-push system, an anchoring system, an operation platform, a pre-buried part system and the like. The bearing platform of the hanging basket is formed by a combined structure of a box girder main frame and trusses, so that the rigidity of the hanging basket is effectively controlled, self-weight of the hanging basket is reduced, and the cost is reduced. An empty basket traveling task of the hanging basket is finished by means of traveling trolleys, traveling tracks, crab claw type sliding blocks, steel lifting belts, the girder surface inner-side triangular main trusses and a hauling mechanism. During usage, the crab claw type sliding blocks are reversely hooked on the girder surface inner-side triangular main trusses, the crab claw type sliding blocks are connected with a bearing platform girder by being connected with the steel lifting belts, the tail of the bearing platform is anchored to a girder bottom plate through traveling wheels, the hauling mechanism hauls sliding shoes to move forwards, therefore, the bearing platform is driven to move forwards, and the traveling mode is steady and reliable.
Description
Technical field
This device relates to bridge box and beam construction field, is specifically related to the cradle construction device of a kind of asymmetric arc variable cross-section thin wing slab box beam.
Background technology
The dragging suspension basket of existing cable-stayed bridge box girder construction, for design for symmetrical box-beam structure, all adopts horizontal-associate beam to connect for domestic existing cradle construction main truss on beam face, and Hanging Basket entirety is usually bilateral symmetry. Its shortcoming is: be not suitable for asymmetric arc box girder with variable cross section; Main truss on beam face adopts horizontal-associate that construction exists certain interference, and for needing truck crane auxiliary to carry out under the in the case of of constructing on beam face, the main truss horizontal-associate on Hanging Basket beam face can affect traffic.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides the cradle construction device of a kind of asymmetric arc variable cross-section thin wing slab box beam.
A kind of cradle construction device of asymmetric arc variable cross-section thin wing slab box beam, it includes bearing platform, vang system, walking system, anti-pushing system in place, anchor system, operating platform and built-in fitting system, box beam main frame and truss combinative structure constitute the bearing platform of Hanging Basket, box beam main frame includes main longitudinal grider, main longitudinal grider both sides are provided with time longeron by horizontal-associate, the secondary longeron of side is connected to gull wing type truss principal, gull wing type truss principal is used for box beam skew web plate and the wing plate of construction reference sectional side, the secondary longeron of opposite side is connected to Horizontal load-bearing truss, Horizontal load-bearing truss is used for arc variable cross-section side box beam of constructing, top, Horizontal load-bearing truss outer end is provided with the skew web plate truss of adjustable-height transverse movable, it is positioned at box beam upper end above secondary longeron and is provided with main truss inside the triangle of beam face, main truss outside the triangle of beam face it is provided with outside main truss inside the triangle of beam face, outside the beam face triangle of box beam side, variable cross-section side, main truss has two, its underpart is respectively equipped with under Horizontal load-bearing truss and connects outrigger and transversely movable connection outrigger, outside the beam face triangle of box beam side, side, standard section, main truss bottom arranges connection outrigger under gull wing type truss principal, it is provided with connector between main truss and the end basket of Hanging Basket outside the triangle of beam face, it is provided with between main truss with bearing platform inside the triangle of beam face and is connected steel suspender belt, steel suspender belt upper end is provided with crab jaw type slide block, crab jaw type slide block is counter to be hooked in inside beam face on triangle main truss, crab jaw type slide block is connected with bearing platform girder by steel suspender belt, walking track it is provided with outside main longitudinal grider, it is provided with walking dolly in walking track, what outside described beam face triangle, main truss and its underpart were arranged connect outrigger can move thus for the construction of arc variable cross-section side box beam by direction across bridge, the skew web plate truss of adjustable-height transverse movable be adjustable-height can the mechanism that moves of direction across bridge for the construction of arc variable cross-section side box beam skew web plate Yu wing plate.
The setting that outside above-mentioned beam face triangle, main truss is separate, it is positioned at flange plate place, for ensureing the balance of asymmetric arc variable cross-section thin wing slab box beam.
Inside above-mentioned beam face, triangle main truss is used for the anchoring of Hanging Basket bearing platform and the guiding of Hanging Basket walking.
Above-mentioned main longitudinal grider is that interval arranges two, is provided with horizontal-associate between two main longitudinal griders.
Above-mentioned connector is �� 40 fining twisted steel.
The present invention achieves following technique effect:
1, the present invention adopts box beam main frame and truss combinative structure to constitute the bearing platform of Hanging Basket, effectively controls the rigidity of Hanging Basket, and decreases the deadweight of Hanging Basket, has saved cost. Triangle main truss and haulage gear inside walking dolly, walking track, crab jaw type slide block, steel suspender belt, beam face is adopted to complete the empty basket walking task of Hanging Basket. During use, crab jaw type slide block is counter to be hooked in inside beam face on triangle main truss, crab jaw type slide block is connected with bearing platform girder by contacting steel suspender belt, bearing platform afterbody is anchored on kingpost baseplate by traveling wheel, haulage gear traction crab jaw type slide block reach, thus driving bearing platform to move forward, this walking manner is steadily reliable.
2,3, downstream, 2, beam face employing upstream amounts to 5 main trusses and solves the construction of the left-right asymmetry arc box girder with variable cross section of axis. Can the anchoring mechanism of bearing platform set level as downstream entirety of the outside main truss on the arc variable cross-section curb girder face, downstream moved of direction across bridge, the moveable skew web plate truss of adjustable-height direction across bridge is placed on the bearing platform that downstream entirety is set level to construct box beam skew web plate and the wing plate of arc variable cross-section side. Upstream adopts box beam skew web plate and the wing plate of side, gull wing type truss construction standard section. Define bigger left-right asymmetry complicated Hanging Basket.
3, all there is connection system between the main truss of current domestic Hanging Basket beam face, the main truss phase absolute construction each other on this Hanging Basket beam face, decrease the interference to construction, and do not affect the traffic of all the other equipment such as beam face truck crane.
4, the asymmetric main couple of bridge floor and bearing platform is adopted to solve asymmetric left and right unbalance loading concrete box girder cast-in-place construction of cantilevers. Avoid and adopt the construction with brackets of pier in heavy Hanging Basket counterweight method or water, saved cost greatly.
5, downstream adopts the moveable skew web plate truss of adjustable-height as the formwork-support of box beam skew web plate and flange plate, thus solving the contracture of arc box girder with variable cross section.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the cross section front view of the embodiment of the present invention 1;
Fig. 2 is the cross section front view of the embodiment of the present invention 2;
Fig. 3 is bearing platform front view;
Fig. 4 is the side view of the present invention;
Fig. 5 is the top view of the present invention;
Fig. 6 is the structural representation of crab jaw type slide block.
Wherein, 1, main truss outside the triangle of beam face, 2, main truss inside the triangle of beam face, 3, main longitudinal grider, 4, secondary longeron, 5, gull wing type truss principal, 6, Horizontal load-bearing truss, 7, the moveable skew web plate truss of adjustable-height direction across bridge, 8, horizontal-associate, 9, walking track, 10, walking dolly, 11, connector, 12, crab jaw type slide block, 13, vang system. 14, outrigger is connected under Horizontal load-bearing truss, 15, transversely movable connection outrigger, 16, connect outrigger, 17 steel suspender belts under gull wing type truss principal.
Detailed description of the invention
Embodiment 1:
Such as Fig. 1, 3-6, a kind of cradle construction device of asymmetric arc variable cross-section thin wing slab box beam, it includes bearing platform, vang system 13, walking system, anti-pushing system in place, anchor system, operating platform and built-in fitting system, box beam main frame and truss combinative structure constitute the bearing platform of Hanging Basket, box beam main frame includes main longitudinal grider 3, main longitudinal grider both sides are provided with time longeron 4 by horizontal-associate 8, the secondary longeron of side is connected to gull wing type truss principal 5, gull wing type truss principal is used for box beam skew web plate and the wing plate of construction reference sectional side, the secondary longeron of opposite side is connected to Horizontal load-bearing truss 6, Horizontal load-bearing truss is used for arc variable cross-section side box beam of constructing, top, Horizontal load-bearing truss outer end is provided with the skew web plate truss 7 of adjustable-height transverse movable, it is positioned at box beam upper end above secondary longeron and is provided with main truss 2 inside the triangle of beam face, main truss 1 outside the triangle of beam face it is provided with outside main truss inside the triangle of beam face, outside the beam face triangle of box beam side, variable cross-section side, main truss has two, its underpart is respectively equipped with under Horizontal load-bearing truss and connects outrigger 14 and transversely movable connection outrigger 15, outside the beam face triangle of box beam side, side, standard section, main truss bottom arranges connection outrigger 16 under gull wing type truss principal, connector 11 it is provided with between main truss and the end basket of Hanging Basket outside the triangle of beam face, it is provided with between main truss with bearing platform inside the triangle of beam face and is connected steel suspender belt 17, steel suspender belt upper end is provided with crab jaw type slide block 12, crab jaw type slide block is counter to be hooked in inside beam face on triangle main truss, crab jaw type slide block is connected with bearing platform girder by steel suspender belt, walking track 9 it is provided with outside main longitudinal grider, it is provided with walking dolly 10 in walking track, what outside described beam face triangle, main truss and its underpart were arranged connect outrigger can move thus for the construction of arc variable cross-section side box beam by direction across bridge, the skew web plate truss of adjustable-height transverse movable be adjustable-height can the mechanism that moves of direction across bridge for the construction of arc variable cross-section side box beam skew web plate Yu wing plate.
Embodiment 2:
Such as Fig. 2-6, structure is similar to Example 1, outside two beam face triangles of box beam side, variable cross-section side, main truss position arranges difference, the present embodiment is arranged at the positive upper end of skew web plate truss of adjustable-height transverse movable, and only has a positive upper end of skew web plate truss being arranged on adjustable-height transverse movable among embodiment 1 two. And preferably, the setting that outside described beam face triangle, main truss is separate, it is positioned at flange plate place, for ensureing the balance of asymmetric arc variable cross-section thin wing slab box beam. Inside described beam face, triangle main truss is used for the anchoring of Hanging Basket bearing platform and the guiding of Hanging Basket walking. Described main longitudinal grider is that interval arranges two, is provided with horizontal-associate between two main longitudinal griders. Described connector is �� 40 fining twisted steel.
Operation principle of the present invention: adopt the skew web plate truss formwork-support as box beam skew web plate and flange plate of adjustable-height transverse movable, thus solving the construction of asymmetric arc box girder with variable cross section. Main truss phase absolute construction each other on beam face, decreases the interference to construction, and does not affect the traffic of all the other equipment such as beam face truck crane. Triangle main truss and haulage gear inside walking dolly, walking track, crab jaw type slide block, steel suspender belt, beam face is adopted to complete the empty basket walking task of Hanging Basket. During use, crab jaw type slide block is counter to be hooked in inside beam face on triangle main truss, crab jaw type slide block is connected with bearing platform girder by contacting steel suspender belt, bearing platform afterbody is anchored on kingpost baseplate by traveling wheel, haulage gear traction crab jaw type slide block reach, thus driving bearing platform to move forward, this walking manner is steadily reliable.
Claims (5)
1. the cradle construction device of an asymmetric arc variable cross-section thin wing slab box beam, it includes bearing platform, vang system (13), walking system, anti-pushing system in place, anchor system, operating platform and built-in fitting system, box beam main frame and truss combinative structure constitute the bearing platform of Hanging Basket, box beam main frame includes main longitudinal grider (3), it is characterized in that: main longitudinal grider both sides are connected to entirety by horizontal-associate (8) with twice longerons (4), the secondary longeron of side is connected to gull wing type truss principal (5), gull wing type truss principal is used for box beam skew web plate and the wing plate of construction reference sectional side, the secondary longeron of opposite side is connected to Horizontal load-bearing truss (6), Horizontal load-bearing truss is used for arc variable cross-section side box beam of constructing, top, Horizontal load-bearing truss outer end is provided with the skew web plate truss (7) of adjustable-height transverse movable, it is positioned at box beam upper end above secondary longeron and is provided with main truss (2) inside the triangle of beam face, main truss (1) outside the triangle of beam face it is provided with outside main truss inside the triangle of beam face, outside the beam face triangle of box beam side, variable cross-section side, main truss has two, its underpart is respectively equipped with under Horizontal load-bearing truss and connects outrigger (14) and transversely movable connection outrigger (15), outside the beam face triangle of side, standard section box beam, main truss bottom arranges and connects outrigger (16) under gull wing type truss principal, connector (11) it is provided with between main truss and the end basket of Hanging Basket outside the triangle of beam face, it is provided with between main truss with bearing platform inside the triangle of beam face and is connected steel suspender belt (17), steel suspender belt upper end is provided with crab jaw type slide block (12), crab jaw type slide block is counter to be hooked in inside beam face on triangle main truss, crab jaw type slide block is connected with bearing platform main longitudinal grider by steel suspender belt, walking track (9) it is provided with outside main longitudinal grider, it is provided with walking dolly (10) in walking track, what outside described beam face triangle, main truss and its underpart were arranged connect outrigger can move thus for the construction of arc variable cross-section side box beam by direction across bridge, the skew web plate truss of adjustable-height transverse movable be adjustable-height can the mechanism that moves of direction across bridge for the construction of arc variable cross-section side box beam skew web plate Yu wing plate.
2. the cradle construction device of asymmetric arc variable cross-section thin wing slab box beam according to claim 1, it is characterized in that: the setting that outside described beam face triangle, main truss is separate, it is positioned at flange plate place, for ensureing the balance of asymmetric arc variable cross-section thin wing slab box beam.
3. the cradle construction device of asymmetric arc variable cross-section thin wing slab box beam according to claim 1, it is characterised in that: inside described beam face, triangle main truss is used for the anchoring of Hanging Basket bearing platform and the guiding of Hanging Basket walking.
4. the cradle construction device of asymmetric arc variable cross-section thin wing slab box beam according to claim 1 and 2, it is characterised in that: described main longitudinal grider is that interval arranges two, is provided with horizontal-associate between two main longitudinal griders.
5. the cradle construction device of asymmetric arc variable cross-section thin wing slab box beam according to claim 1 and 2, it is characterised in that: described connector is �� 40 fining twisted steel.
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CN201511025753.9A CN105648915B (en) | 2015-12-31 | 2015-12-31 | The cradle construction device of asymmetric arc variable cross-section thin wing slab box beam |
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CN201511025753.9A CN105648915B (en) | 2015-12-31 | 2015-12-31 | The cradle construction device of asymmetric arc variable cross-section thin wing slab box beam |
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CN105648915A true CN105648915A (en) | 2016-06-08 |
CN105648915B CN105648915B (en) | 2017-06-23 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106978783A (en) * | 2017-05-16 | 2017-07-25 | 中铁八局集团第二工程有限公司 | The Hanging Basket poured for skew web plate formula continuous beam cantilever |
CN111778863A (en) * | 2020-07-20 | 2020-10-16 | 中铁大桥局第九工程有限公司 | Cantilever beam steel formwork system with adjustable cross slope |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106978783A (en) * | 2017-05-16 | 2017-07-25 | 中铁八局集团第二工程有限公司 | The Hanging Basket poured for skew web plate formula continuous beam cantilever |
CN111778863A (en) * | 2020-07-20 | 2020-10-16 | 中铁大桥局第九工程有限公司 | Cantilever beam steel formwork system with adjustable cross slope |
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