CN213925814U - Concrete box girder cable-stay bridge anchor plate embedded structure - Google Patents
Concrete box girder cable-stay bridge anchor plate embedded structure Download PDFInfo
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- CN213925814U CN213925814U CN202021580287.7U CN202021580287U CN213925814U CN 213925814 U CN213925814 U CN 213925814U CN 202021580287 U CN202021580287 U CN 202021580287U CN 213925814 U CN213925814 U CN 213925814U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 238000004873 anchoring Methods 0.000 claims description 16
- 230000008719 thickening Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 17
- 238000005192 partition Methods 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
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Abstract
The utility model discloses a concrete box girder cable-stay bridge anchor arm-tie pre-buried structure, including anchor arm-tie pre-buried board, anchor arm-tie pre-buried board sets up in girder outer web, and concrete bridge face board is stretched out at anchor arm-tie pre-buried board top, and anchor arm-tie slope is towards the cable tower direction with anchor arm-tie welded fastening after concrete beam pours the maintenance completion to the stretch-out section of anchor arm-tie pre-buried board. The utility model discloses pre-buried board setting is drawn to the anchor realizes biography power through the PBL key in girder outer web and girder diaphragm crossing region, realizes horizontal whole atress and structure through prestressing steel bundle, reinforcing bar in succession, has avoided the suspension cable anchor to maintain the unfavorable factor that brings for design, construction, operation when the beam bottom, has also avoided anchor piece self atress poor and account for the space big, the unfavorable factor that the view effect is poor when setting up the anchor piece more than the bridge floor. The utility model discloses the structure is reasonable, transversely do not cut the concrete web, pass the clear and definite, convenient construction, be convenient for stay cable girder side anchor maintenance, small, take up an area of few advantage of area.
Description
Technical Field
The utility model belongs to bridge cable structure field, concretely relates to concrete box girder cable-stay bridge anchor plate embedded structure.
Background
The common cable-girder anchoring form of the concrete box-girder cable-stayed bridge is to anchor a stay cable at the bottom of a girder or arrange a concrete anchoring block on a bridge floor. The former is comparatively inconvenient in the maintenance work of the anchor structure of suspension cable anchor in the breast in the operation stage, and needs set up the anchor tooth piece at the case roof beam inclined bottom plate, and the construction location is complicated. In the concrete anchor block, the anchor plate is embedded into the concrete anchor block arranged above the bridge floor, the anchor block bears tensile force, high reinforcing bars or prestressed steel bundles are needed to be arranged to avoid tensile cracking of concrete, and the anchor structure has large volume, occupies more space of the bridge floor and has poor attractiveness.
Disclosure of Invention
The utility model discloses a solve the problem that prior art exists and propose, its purpose provides a concrete box girder cable-stay bridge anchor plate embedded structure.
The technical scheme of the utility model is that: the anchor plate pre-buried structure of the concrete box girder cable-stayed bridge comprises an anchor pre-buried plate, wherein the anchor pre-buried plate is arranged in an outer web plate of a main girder, the top of the anchor pre-buried plate extends out of a concrete bridge panel, an extending section of the anchor pre-buried plate is welded and fixed with the anchor plate after concrete beam pouring and curing is completed, and the anchor plate is inclined towards the direction of a cable tower.
Furthermore, the anchor pulling embedded plate is arranged in the intersection area of the girder outer web plate and the girder diaphragm plate.
Furthermore, a plurality of PBL shear key holes are formed in the anchoring embedded plate, PBL shear keys are arranged in the PBL shear key holes, and the PBL shear keys are fixed with the girder outer web plate.
Furthermore, the outer web of the main beam forms a thickened section of the outer web of the main beam at the fixing position of the anchoring embedded plate, and the PBL shear keys are all positioned in the thickened section of the outer web of the main beam.
Furthermore, the thickened section of the outer web plate of the main beam and the outer web plate of the main beam are in smooth transition.
Furthermore, the anchor is drawn to form reinforcing bar through holes in the embedded plate, the reinforcing bar through holes include diaphragm reinforcing bar holes and bridge deck reinforcing bar holes, reinforcing bars in the girder diaphragm pass through the diaphragm reinforcing bar holes, and reinforcing bars in the bridge deck pass through the bridge deck reinforcing bar holes.
Furthermore, steel bundle through holes are formed in the anchor pre-embedded plates, and the prestressed steel bundles in the bridge body penetrate through the steel bundle through holes.
Further, the steel bundle passing holes include a transverse steel bundle passing hole and a lower steel bundle passing hole.
Furthermore, the transverse steel beam through holes correspond to the bridge deck, and the transverse prestressed steel beams in the bridge deck penetrate through the transverse steel beam through holes.
Furthermore, the lower steel beam through holes correspond to the girder outer web plates, and the lower prestressed steel beams penetrate through the lower steel beam through holes.
The utility model discloses pre-buried board setting is drawn to the anchor realizes biography power through the PBL key in girder outer web and girder diaphragm crossing region, realizes horizontal whole atress and structure through prestressing steel bundle, reinforcing bar in succession, has avoided the suspension cable anchor to maintain the unfavorable factor that brings for design, construction, operation when the beam bottom, has also avoided anchor piece self atress poor and account for the space big, the unfavorable factor that the view effect is poor when setting up the anchor piece more than the bridge floor.
The utility model discloses the structure is reasonable, transversely do not cut the concrete web, pass the clear and definite, convenient construction, be convenient for stay cable girder side anchor maintenance, small, take up an area of few advantage of area.
The invention simplifies the anchoring structure of the stay cable and the main beam, optimizes the solid structure of the anchoring area of the main beam of the common concrete cable-stayed bridge into a box-shaped structure, is favorable for reducing the dead weight of the main beam, saving masonry, improving the economy of the main beam and simultaneously is favorable for improving the anti-seismic performance of the bridge in the design of the bridge in a high-intensity seismic area.
Drawings
Fig. 1 is a schematic elevation view of the present invention;
FIG. 2 is a schematic view of the cross-bridge structure of the present invention;
fig. 3 is a schematic plan view of the present invention;
FIG. 4 is a schematic structural view of the middle anchor pre-buried plate of the present invention;
wherein:
1 anchoring embedded plate 2 anchoring plate
3 girder outer web thickening section 4 girder diaphragm plates
5 concrete bridge deck 6 transverse prestressed steel beam
7 lower prestressed steel beam
1-1 PBL shear key hole 1-2 transverse steel bundle passing hole
The steel bars 1-3 pass through the holes 1-4 and the steel bundles below the holes pass through the holes.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1-4, a concrete box girder cable-stayed bridge anchor pulling plate pre-buried structure comprises an anchor pulling pre-buried plate 1, the anchor pulling pre-buried plate 1 is arranged in an outer web plate of a main girder, a concrete bridge deck 5 is extended out of the top of the anchor pulling pre-buried plate 1, an extending section of the anchor pulling pre-buried plate 1 is welded and fixed with an anchor pulling plate 2 after concrete beam pouring and curing is completed, and the anchor pulling plate 2 inclines towards a cable tower direction.
The anchor-pulling embedded plate 1 is arranged in the intersection area of the girder outer web plate and the girder diaphragm plate 4.
A plurality of PBL shear key holes 1-1 are formed in the anchoring embedded plate 1, PBL shear keys are arranged in the PBL shear key holes 1-1, and the PBL shear keys are fixed with the girder outer web plate.
The outer web of the girder forms a thickened section 3 of the outer web of the girder at the fixed part of the anchoring embedded plate 1, and the PBL shear keys are all positioned in the thickened section 3 of the outer web of the girder.
And the girder outer web thickening section 3 and the girder outer web are in smooth transition.
And reinforcing steel bar passing holes 1-3 are formed in the anchor pre-embedded plates 1, the reinforcing steel bar passing holes 1-3 comprise transverse partition plate reinforcing steel bar holes and bridge deck reinforcing steel bar holes, reinforcing steel bars in the girder transverse partition plates 4 penetrate through the transverse partition plate reinforcing steel bar holes, and reinforcing steel bars in the bridge deck penetrate through the bridge deck reinforcing steel bar holes.
And steel beam through holes are formed in the anchor pre-embedded plate 1, and the prestressed steel beams in the bridge body penetrate through the steel beam through holes.
The steel bundle passing holes comprise transverse steel bundle passing holes 1-2.
The transverse steel beam through holes 1-2 correspond to the bridge deck, and a transverse prestressed steel beam 6 in the bridge deck penetrates through the transverse steel beam through holes 1-2.
Yet another embodiment
The utility model provides a concrete box girder cable-stay bridge anchor arm-tie pre-buried structure, includes anchor arm-tie pre-buried plate 1, anchor arm-tie pre-buried plate 1 sets up in girder outer web, concrete bridge face board 5 is stretched out at anchor arm-tie pre-buried plate 1 top, anchor arm-tie pre-buried plate 1's stretch out section is fixed mutually with anchor arm-tie 2 after concrete beam pouring maintenance is accomplished, anchor arm-tie 2 slopes towards the cable-tower direction.
The anchor-pulling embedded plate 1 is arranged in the intersection area of the girder outer web plate and the girder diaphragm plate 4.
A plurality of PBL shear key holes 1-1 are formed in the anchoring embedded plate 1, PBL shear keys are arranged in the PBL shear key holes 1-1, and the PBL shear keys are fixed with the girder outer web plate.
The outer web of the girder forms a thickened section 3 of the outer web of the girder at the fixed part of the anchoring embedded plate 1, and the PBL shear keys are all positioned in the thickened section 3 of the outer web of the girder.
And the girder outer web thickening section 3 and the girder outer web are in smooth transition.
And reinforcing steel bar passing holes 1-3 are formed in the anchor pre-embedded plates 1, the reinforcing steel bar passing holes 1-3 comprise transverse partition plate reinforcing steel bar holes and bridge deck reinforcing steel bar holes, reinforcing steel bars in the girder transverse partition plates 4 penetrate through the transverse partition plate reinforcing steel bar holes, and reinforcing steel bars in the bridge deck penetrate through the bridge deck reinforcing steel bar holes.
And steel beam through holes are formed in the anchor pre-embedded plate 1, and the prestressed steel beams in the bridge body penetrate through the steel beam through holes.
The steel bundle passing holes comprise transverse steel bundle passing holes 1-2 and lower steel bundle passing holes 1-4.
The transverse steel beam through holes 1-2 correspond to the bridge deck, and a transverse prestressed steel beam 6 in the bridge deck penetrates through the transverse steel beam through holes 1-2.
The lower steel beam through holes 1-4 correspond to the main beam outer web plate, and the lower prestressed steel beam 7 penetrates through the lower steel beam through holes 1-4.
Preferably, the anchor-pulling embedded plates 1 are symmetrical along the center line of the main beam diaphragm plate 4.
The steel bundle through holes are prevented from colliding with the PBL shear key holes 1-1 and the steel bar through holes 1-3, the steel bars in the girder transverse partition plates 4 in the steel bar through holes 1-3 and the steel bars in the bridge deck ensure that the bridge deck transversely forms a whole, and therefore the anchoring and pulling embedded plates 1 are additionally arranged on the basis without influencing the bridge deck.
The anchor pre-buried plate 1 and the anchor plate 2 are fixed by welding.
Preferably, the anchor pre-buried plate 1 and the anchor plate 2 are subjected to field penetration welding.
Girder outer web thickened section 3, girder outer web structure as an organic whole, guarantee the mechanical properties of girder outer web through girder outer web thickened section 3, guarantee the firmness that PBL shear force key is fixed through girder outer web thickened section 3 simultaneously.
Correspondingly, the length of the PBL shear key is smaller than that of the thickened section 3 of the outer web plate of the main beam.
And the transverse prestressed steel beam 6 and the lower prestressed steel beam 7 comprehensively stretch the bridge body transversely.
The number of PBL shear keys on the anchor pre-embedded plate 1 is determined by calculation according to the stay cable force, and the anchor plate 2 needs to be subjected to penetration welding with the anchor pre-embedded plate 1 after the concrete beam body is poured and cured.
The utility model discloses a concrete work progress as follows:
firstly, determining the length and the height of the anchor embedded plate 1 by combining design requirements and cable design, and processing the anchor embedded plate 1.
And then, hoisting the anchor embedded plate 1 before binding the concrete beam body steel bars, and positioning the anchor embedded plate 1.
And then, completing the perforation arrangement of the PBL shear keys, the transverse steel bundles and the common steel bars on the basis of the positioning of the anchor pulling embedded plate 1.
And finally, finishing the binding of the reinforcing steel bars of the beam body, erecting the template and pouring concrete, curing the concrete, and carrying out fusion penetration butt welding on the anchor pulling plate 2 and the anchor pulling embedded plate 1 after the curing is finished.
The utility model discloses pre-buried board setting is drawn to the anchor realizes biography power through the PBL key in girder outer web and girder diaphragm crossing region, realizes horizontal whole atress and structure through prestressing steel bundle, reinforcing bar in succession, has avoided the suspension cable anchor to maintain the unfavorable factor that brings for design, construction, operation when the beam bottom, has also avoided anchor piece self atress poor and account for the space big, the unfavorable factor that the view effect is poor when setting up the anchor piece more than the bridge floor.
The utility model discloses the structure is reasonable, transversely do not cut the concrete web, pass the clear and definite, convenient construction, be convenient for stay cable girder side anchor maintenance, small, take up an area of few advantage of area. The invention simplifies the anchoring structure of the stay cable and the main beam, optimizes the solid structure of the anchoring area of the main beam of the common concrete cable-stayed bridge into a box-shaped structure, is favorable for reducing the dead weight of the main beam, saving masonry, improving the economy of the main beam and simultaneously is favorable for improving the anti-seismic performance of the bridge in the design of the bridge in a high-intensity seismic area.
Claims (10)
1. The utility model provides a concrete box girder cable-stay bridge anchor slab embedded structure, includes anchor and draws pre-buried board (1), its characterized in that: the anchor pre-embedded plate (1) is arranged in an outer web plate of the main beam, the top of the anchor pre-embedded plate (1) extends out of the concrete bridge deck (5), the extending section of the anchor pre-embedded plate (1) is welded and fixed with the anchor plate (2) after the concrete beam is poured and cured, and the anchor plate (2) inclines towards the cable tower direction.
2. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate according to claim 1, characterized in that: the anchor-pulling embedded plate (1) is arranged in the intersection area of the girder outer web plate and the girder diaphragm plate (4).
3. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate of claim 2, characterized in that: a plurality of PBL shear key holes (1-1) are formed in the anchoring embedded plate (1), PBL shear keys are arranged in the PBL shear key holes (1-1), and the PBL shear keys are fixed with the girder outer web plate.
4. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate according to claim 3, characterized in that: the outer web of the girder forms a thickened section (3) of the outer web of the girder at the fixed part of the anchor-pulling embedded plate (1), and the PBL shear keys are all positioned in the thickened section (3) of the outer web of the girder.
5. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate of claim 4, characterized in that: the girder outer web thickening section (3) and the girder outer web are in smooth transition.
6. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate according to claim 3, characterized in that: the anchor is pulled and is formed reinforcing bar through hole (1-3) in embedded plate (1), reinforcing bar through hole (1-3) include horizontal spacer plate reinforcing bar hole and bridge floor reinforcing bar hole, the reinforcing bar in girder horizontal spacer plate (4) passes above-mentioned horizontal spacer plate reinforcing bar hole, and the reinforcing bar in the bridge floor passes above-mentioned bridge floor reinforcing bar hole.
7. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate of claim 6, characterized in that: and a steel bundle through hole is formed in the anchor pre-embedded plate (1), and the prestressed steel bundle in the bridge body penetrates through the steel bundle through hole.
8. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate of claim 7, characterized in that: the steel bundle passing holes comprise transverse steel bundle passing holes (1-2) and lower steel bundle passing holes (1-4).
9. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate according to claim 8, characterized in that: the transverse steel beam through holes (1-2) correspond to the bridge deck, and a transverse prestressed steel beam (6) in the bridge deck penetrates through the transverse steel beam through holes (1-2).
10. The pre-buried structure of concrete box girder cable-stayed bridge anchor plate according to claim 8, characterized in that: the lower steel beam through holes (1-4) correspond to the main beam outer web plate, and the lower prestressed steel beam (7) penetrates through the lower steel beam through holes (1-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021580287.7U CN213925814U (en) | 2020-08-03 | 2020-08-03 | Concrete box girder cable-stay bridge anchor plate embedded structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021580287.7U CN213925814U (en) | 2020-08-03 | 2020-08-03 | Concrete box girder cable-stay bridge anchor plate embedded structure |
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| CN213925814U true CN213925814U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491982A (en) * | 2022-09-19 | 2022-12-20 | 中铁大桥局集团有限公司 | A pre-embedded part for pouring steel-intensive concrete bridge tower beams |
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2020
- 2020-08-03 CN CN202021580287.7U patent/CN213925814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491982A (en) * | 2022-09-19 | 2022-12-20 | 中铁大桥局集团有限公司 | A pre-embedded part for pouring steel-intensive concrete bridge tower beams |
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