CN212316699U - Steel-concrete combined embedded thrust structure of stayed-cable bridge guyed hanging basket - Google Patents
Steel-concrete combined embedded thrust structure of stayed-cable bridge guyed hanging basket Download PDFInfo
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- CN212316699U CN212316699U CN202021195891.8U CN202021195891U CN212316699U CN 212316699 U CN212316699 U CN 212316699U CN 202021195891 U CN202021195891 U CN 202021195891U CN 212316699 U CN212316699 U CN 212316699U
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- 239000004567 concrete Substances 0.000 title claims description 19
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009931 harmful effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model relates to a cable-stay bridge construction technical field specifically is a basket reinforced concrete combines embedded thrust structure is hung to cable-stay bridge guy cable, aims at solving current cable-stay bridge guy cable and hangs basket thrust structure and can beautifully cause the technical problem of harmful effects to under-bridge headroom and bridge. The following technical scheme is adopted: including the case roof beam with hang the basket, the case roof beam is equipped with the case roof beam bottom plate, hangs the basket and is equipped with and hangs the basket floorbar, and the bottom plate of case roof beam is equipped with the preformed hole, is equipped with the thrust piece that is located the preformed hole edge in the case roof beam, is fixed with the shear block on hanging the floorbar of basket, and inside the upper end of shear block passed the preformed hole and stretched into the case roof beam, and under the horizontal component effect of guy rope, the shear block supported and leaned on the thrust block surface.
Description
Technical Field
The utility model relates to a cable-stay bridge construction technical field specifically is a cable-stay bridge guyed hanging basket steel-concrete combines embedded thrust structure.
Background
The cable-stayed bridge adopts a guy cable hanging basket to carry out concrete cantilever pouring construction, the rear end of the hanging basket is anchored on a poured concrete box girder section, and the front end of the hanging basket is fixed through a guy cable. In the construction engineering, the cable force needs to be continuously adjusted to bear the wet weight of the poured concrete and the construction load, and the guy cable can generate a horizontal component force on the hanging basket at the moment, so that a structure capable of resisting the horizontal component force needs to be arranged between the hanging basket and the box girder, and the hanging basket is prevented from moving backwards under the action of the cable force, namely, the thrust structure. The existing thrust structure adopts a concrete shear block or a pre-embedded profile steel shear block poured outside a box girder bottom plate to be contacted with a shear block arranged on a bottom beam of a hanging basket so as to resist the horizontal component force of a stay cable. However, the thrust structure has certain limitations: 1) because the horizontal component force generated by the guy cable is very large, the concrete shear block arranged at the bottom of the box girder or the embedded section steel shear block is required to have a large size, and the influence on the bridge clearance below the bridge can be generated; 2) for the urban landscape bridge, the concrete shear block or the embedded type steel shear block arranged at the bottom of the box girder has certain influence on the attractiveness of the bridge.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving current cable-stay bridge guyed basket thrust structure and can beautifully cause the technical problem of harmful effects to under-bridge headroom and bridge.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an embedded thrust structure of basket reinforced concrete combination is hung to cable-stay bridge guyed, include the case roof beam and hang the basket, the case roof beam is equipped with the case roof beam bottom plate, it is equipped with and hangs the basket floorbar to hang the basket, the case roof beam with hang the basket and be the well-known structure of personnel in the field, its relation of connection is also well-known, case roof beam bottom plate is equipped with the preformed hole, be equipped with the thrust block that is located the preformed hole edge in the case roof beam, it is fixed with the shear block on the floorbar to hang, the upper end of shear block passes the preformed hole and stretches into inside the case roof beam, and under the horizontal component effect of guy, the shear.
When the suspension basket is used, the horizontal component force of the guy cable on the suspension basket is resisted through the contact of the shear block and the thrust block. The utility model discloses a main utility model point lies in the inboard of the position of thrust block setting at the case roof beam, and the shear force piece is to stretching into the inside back of case roof beam and leaning on the thrust block surface.
The utility model has the advantages that:
1) the utility model provides a stay cable hanging basket steel-concrete combined embedded thrust structure of a cable-stayed bridge, which arranges a thrust block on a bottom plate of a box girder inside the box girder and is provided with a preformed hole for inserting a shear block on a hanging basket, thereby reducing the height of the bottom beam of the hanging basket to a certain extent and increasing the clearance below the bridge;
2) the utility model provides an embedded thrust structure of basket reinforced concrete combination is hung to cable-stay bridge guyed because the thrust piece has been established inside the case roof beam, sets up the structure of thrust piece for the case roof beam bottom outside among the traditional approach, has reduced the influence to municipal landscape bridge aesthetic property greatly.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an axonometric view of the overall structure of the invention;
FIG. 2 is an isometric view of the upper shear structure of the present invention;
fig. 3 is an isometric view of a lower shear structure of the present invention;
fig. 4 is an axonometric view of the section of the lower shear structure of the present invention.
In the figure:
1 ┄ box girder bottom plate; 2 ┄ bottom beam of hanging basket; 3 ┄ thrust block; 4 ┄ shear block; 5 ┄ prestressed steel strands; 21 ┄ second stiffening plate; 41 ┄ upper shear structure; 42 ┄ lower shear structure; 43 ┄ connecting bolt; 411 ┄ flat baffles; 412 ┄ cover plate; 413 ┄ side panels; 421 ┄ thrust baffle; 422 ┄ first stiffener.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, the utility model discloses a cable-stayed bridge guyed hanging basket steel-concrete combined embedded thrust structure, including case roof beam and hanging basket, the case roof beam is concrete case roof beam during concrete implementation, the case roof beam is equipped with case roof beam bottom plate 1, the hanging basket is equipped with hanging basket bottom beam 2, the bottom plate of case roof beam is equipped with the preformed hole, be equipped with the thrust block 3 that is located the preformed hole edge in the case roof beam, during concrete implementation, thrust block 3 can be concrete shear block or embedded type steel shear block, thrust block 3 must set up the edge at the preformed hole, otherwise shear block 4 can't contact thrust block 3 when stretching into the case, that has just lost the significance of setting; a shear block 4 is fixed on a bottom beam of the hanging basket, and the shear block 4 is preferably of a steel structure and is welded and fixed on the hanging basket in specific implementation; the upper end of the shear block 4 penetrates through the reserved hole to extend into the box girder, and under the action of the horizontal component force of the guy rope, the shear block 4 abuts against the surface of the thrust block 3.
Referring to fig. 2-4, there is provided a preferred structure of the shear block 4 in the above technical solution: the shear block 4 comprises an upper shear structure 41, a lower shear structure 42 and connecting bolts 43, the lower shear structure 42 comprises a plurality of thrust baffles 421 fixed on the bottom beam 2 of the suspended basket in parallel, the arrangement direction of the thrust baffles 421 is consistent with the horizontal component force direction of the guy rope, a space for the prestressed steel strand 5 to pass through is formed between the adjacent thrust baffles 421, the corner of the thrust baffle 421 close to the thrust block 3 is a right angle, the right angle is used for being matched with the cover plate 412 and the plane baffle 411, the upper shear structure 41 is a partial cuboid shell structure formed by integrally molding or fixedly connecting the plane baffle 411, the cover plate 412 and the two side plates 413, the partial cuboid shell structure is a structure which is remained after a group of adjacent surfaces of the cuboid shell are removed, the plane baffle 411 and the cover plate 412 are both vertical to the thrust baffles 421, and the plane baffle 411 is arranged between the thrust baffles 421 and the thrust block, The cover plate 412 is adjacently arranged on the upper side of the thrust baffle 421, and the two side plates 413 are parallel to the thrust baffle 421 and are respectively fixed on the two outermost thrust baffles 421 through the connecting bolts 43. Here, if the upper shear structure 41 is not provided, the contact area of the shear block 4 and the thrust block 3 is the side surfaces of several thrust baffles 421, the stress area is small, and the upper limit value of the stress per unit area is easily exceeded, so that the structure fails; if for solving this problem, establish lower part shear structure 42 into solid construction, then the wearing of prestressing force steel strand wires 5 is put comparatively difficultly, even predetermine the wearing hole, solid construction weight is too big, also be difficult to satisfy the needs, so in this preferred scheme, ingenious adding has established upper portion shear structure 41, lower part shear structure 42 can be made the structure that several thrust baffles 421 of the most preferred are constituteed, form the space that lets prestressing force steel strand wires 5 pass through between the adjacent thrust baffle 421, structure weight is lighter, and the lifting surface has effectively been increased, therefore, the practicality is very strong.
Further, a first stiffening plate 422 is arranged between the lower parts of the adjacent thrust baffles 421 to enhance the structural stability of the thrust baffles 421 and avoid structural failure. In specific implementation, the first stiffener plate 422 is welded to the lower portion of the thrust baffle 421.
Further, the corner of the upper edge of the thrust baffle 421 away from the thrust block 3 is provided with a chamfered shape, so that the tank preformed hole can be relatively small in design. If the bight of keeping away from thrust block 3 of thrust baffle 421's upper edge also sets up to the right angle, then the preformed hole must be greater than the length of thrust baffle 421, but sets up to chamfer column structure, and when thrust baffle 421 stretched into the preformed hole, the chamfer part did not stretch into completely, the preformed hole only need be greater than the size of the thrust baffle 421 of corresponding position department like this can to the partial size of thrust baffle 421 that is located the preformed hole below still can be great, be used for guaranteeing structural stability.
The shear block 4 specifically comprises the following steps:
1) respectively processing an upper shear structure 41, a connecting bolt 43 and a lower shear structure 42, wherein the lower shear structure 42 is firmly welded with the bottom beam 2 of the cradle at a designed position;
2) when the corresponding beam section of the box beam is poured, a reserved hole is formed in a box beam bottom plate 1, and a thrust block 3 is arranged in the box beam;
3) after the hanging basket is moved in place, the hanging basket is integrally lifted, the thrust baffle 421 of the lower shear structure 42 penetrates through a preformed hole of the box girder bottom plate 1 to enter the box girder, wherein the prestressed steel strand 5 of the box girder bottom plate 1 penetrates in a space between the two thrust baffles 421;
4) the upper shear structure 41 and the lower shear structure 42 are connected into a whole by connecting bolts 43;
5) adjusting the position of the cradle to enable the plane baffle 411 of the upper shear structure 41 to be tightly attached to the thrust block 3 in the box girder;
6) and during construction of the guy rope hanging basket, horizontal component force of the hanging basket generated by the guy rope can be smoothly transmitted to the concrete box girder through the thrust device.
Preferably, the cradle bottom beam 2 is of a square tubular structure, and the second stiffening plate 21 in a lattice shape is arranged in the cradle bottom beam, so that the requirement of light weight can be met, and the structural stability of the cradle bottom beam 2 is greatly enhanced by the second stiffening plate 21. During specific implementation, the second stiffening plate 21 is welded inside the bottom beam 2 of the hanging basket.
The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (5)
1. The utility model provides an embedded thrust structure of basket reinforced concrete combination is hung to cable-stay bridge guyed, includes the case roof beam and hangs the basket, the case roof beam is equipped with case roof beam bottom plate (1), hangs the basket and is equipped with and hangs basket floorbar (2), its characterized in that: the box girder bottom plate (1) is provided with a preformed hole, a thrust block (3) positioned at the edge of the preformed hole is arranged in the box girder, a shear block (4) is fixed on the bottom beam (2) of the hanging basket, the upper end of the shear block (4) penetrates through the preformed hole and extends into the box girder, and the shear block (4) abuts against the surface of the thrust block (3) under the action of the horizontal component of the guy rope.
2. The cable-stayed bridge guyed hanging basket steel-concrete combined embedded thrust structure according to claim 1, characterized in that: the shear block (4) comprises an upper shear structure (41), a lower shear structure (42) and connecting bolts (43), the lower shear structure (42) comprises a plurality of thrust baffles (421) which are fixed on a bottom beam (2) of the hanging basket and arranged in parallel, the arrangement direction of the thrust baffles (421) is consistent with the horizontal component force direction of a guy cable, a space for allowing a prestressed steel strand (5) to pass through is formed between every two adjacent thrust baffles (421), the corner of each thrust baffle (421) close to the corresponding thrust block (3) is a right angle, the upper shear structure (41) is a partial cuboid shell structure formed by integrally forming or fixedly connecting a plane baffle (411), a cover plate (412) and two side plates (413), the partial cuboid shell structure is a structure which is remained after one group of adjacent surfaces of a cuboid shell is removed, and the plane baffle (411) and the cover plate (412) are both perpendicular to the thrust baffles (421, and the plane baffle (411) is arranged between the thrust baffle (421) and the thrust block (3), the cover plate (412) is adjacently arranged at the upper side of the thrust baffle (421), and the two side plates (413) are parallel to the thrust baffle (421) and are respectively fixed on the two thrust baffles (421) at the outermost sides through connecting bolts (43).
3. The cable-stayed bridge guyed hanging basket steel-concrete combined embedded thrust structure according to claim 2, characterized in that: a first stiffening plate (422) is arranged between the lower parts of the adjacent thrust baffles (421).
4. The cable-stayed bridge guyed hanging basket steel-concrete combined embedded thrust structure according to claim 3, characterized in that: the corner of the upper edge of the thrust baffle (421), which is far away from the thrust block (3), is arranged to be in a chamfer shape.
5. The cable-stayed bridge guyed basket reinforced concrete combined embedded thrust structure according to any one of claims 1 to 4, wherein: the bottom beam (2) of the hanging basket is of a square tubular structure, and a second stiffening plate (21) in a well-lattice shape is arranged in the bottom beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195891.8U CN212316699U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete combined embedded thrust structure of stayed-cable bridge guyed hanging basket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195891.8U CN212316699U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete combined embedded thrust structure of stayed-cable bridge guyed hanging basket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212316699U true CN212316699U (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021195891.8U Active CN212316699U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete combined embedded thrust structure of stayed-cable bridge guyed hanging basket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212316699U (en) |
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2020
- 2020-06-24 CN CN202021195891.8U patent/CN212316699U/en active Active
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Address after: Room 1103, Building F (Building 3), Xinfa Huirong Plaza, Xinwu District, Wuxi City, Jiangsu Province, China Patentee after: China Railway 17th Bureau Group Municipal Construction Co.,Ltd. Country or region after: China Address before: Room 301-m, No.1, Lane 1, Suide Road, Putuo District, Shanghai 200135 Patentee before: CHINA RAILWAY 17TH BUREAU GROUP SHANGHAI RAIL TRANSIT ENGINEERING CO.,LTD. Country or region before: China |