CN113605241A - Large-span cable-stayed beam construction support and method for high-speed road bent frame pier - Google Patents
Large-span cable-stayed beam construction support and method for high-speed road bent frame pier Download PDFInfo
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- CN113605241A CN113605241A CN202110861594.5A CN202110861594A CN113605241A CN 113605241 A CN113605241 A CN 113605241A CN 202110861594 A CN202110861594 A CN 202110861594A CN 113605241 A CN113605241 A CN 113605241A
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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
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Abstract
The invention provides a large-span cable-stayed crossbeam construction bracket for a high-speed road bent frame pier and a method thereof, wherein the bracket comprises foundation supports arranged at two sides of a sub-crossing lane at the bottom, a bearing platform arranged on the foundation supports, a crossbeam outer mold arranged on the bearing platform for pouring construction of a crossbeam, and a supporting stress structure for separating four corners of the crossbeam outer mold, the foundation supports comprise a bearing platform and a pier body, holes are pre-embedded in the pier body, the bearing structure comprises a longitudinal supporting beam penetrating through the holes of the pier body along a longitudinal bridge direction, a transverse supporting beam arranged above the longitudinal supporting beam and a steel plate assembly pre-embedded on the pier body, a plurality of connecting lug plates are arranged on the transverse supporting beam, the supporting stress structure comprises a concrete steel pipe column, a longitudinal hanging beam and a cable-stayed lead screw, the concrete steel pipe column is arranged above the steel plate assembly, one end of the cable-stayed lead screw is connected with the longitudinal hanging beam, the other end is connected with the connecting ear plate. The invention has simple construction structure, convenient installation and less used materials.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a large-span cable-stayed beam construction support and method for a high-speed road bent frame pier.
Background
Along with the continuous development of urbanization, the traffic volume of cities in China is increased sharply, the traffic capacity of the existing roads cannot meet the increasing traffic volume, and the phenomenon of high speed of the existing roads is inevitably generated during the construction process of the urban roads. The construction of general crossbeam has characteristics of heavy load, high altitude, stride greatly among the prior art, generally adopts the steel pipe support system that falls to the ground (perpendicular braced system promptly), for the construction safety of guaranteeing the crossbeam structure thing, simultaneously for satisfying the atress requirement, but this kind of construction mode has following shortcoming and not enough: firstly, the investment of engineering materials is large, the manufacturing cost is high, and the cost is high; secondly, the requirement on the field is high; and thirdly, the total construction period is long, the influence of the mutual operation area is long when the support is erected at high altitude, the construction risk is large, and meanwhile, the method is not suitable for the construction of an existing road on the upper cross and cannot meet the requirement of not influencing normal traffic.
Disclosure of Invention
The invention provides a large-span diagonal beam construction support for a cross highway bent pier and a method thereof, wherein the strength and rigidity of the support meet the construction requirements of a beam, the normal passing of vehicles below the support is not influenced, and the support is simple in construction structure, convenient to install and less in used materials.
The technical scheme of the invention is as follows: a large-span cable-stayed crossbeam construction support for a high-speed road bent frame pier comprises foundation supports arranged on two sides of a sub-crossing lane at the bottom, a bearing platform arranged on the foundation supports, a crossbeam outer mold arranged on the bearing platform and used for crossbeam pouring construction, and a supporting stress structure for four corners of the crossbeam outer mold, wherein the foundation supports comprise bearing platforms arranged on two sides of the crossing lane and a pier body arranged on the bearing platforms, holes are pre-embedded in the pier body, the bearing structure comprises a longitudinal supporting beam penetrating through the holes of the pier body along a longitudinal bridge direction, a transverse supporting beam arranged above the longitudinal supporting beam and a steel plate assembly pre-embedded on the pier body, a plurality of connecting lug plates are arranged on the transverse supporting beam, the supporting stress structure comprises a concrete steel pipe column, a longitudinal hanging beam and a cable-stayed lead screw which are arranged on the bearing structure, and the concrete steel pipe column is arranged above the steel plate assembly, one end of the diagonal lead screw is connected with the longitudinal hanging beam, and the other end of the diagonal lead screw is connected with the connecting lug plate.
Preferably, the concrete steel pipe column is provided with a reserved hole, and the longitudinal hanging beam penetrates through the reserved hole of the adjacent concrete steel pipe column from the longitudinal bridge.
Preferably, two longitudinal hanging beams are arranged on the same concrete steel pipe column in a penetrating mode in the height direction.
Preferably, the longitudinal hoisting beam penetrates out of the suspended end of the concrete steel pipe column to be provided with a hoisting ring, the hoisting ring is of a semicircular structure with a rectangular upper end and a rectangular lower end, a mounting hole I is formed in the semicircle, and a hinge pin is arranged in the mounting hole I to connect and fix the diagonal draw screw.
Preferably, the connecting lug plate is of a semicircular structure provided with a mounting hole II, a hinge pin is arranged in the mounting hole II to connect and fix the inclined-pulling screw rod, and each connecting lug plate on the transverse supporting beam is provided with a plurality of connecting lug plates which are positioned on the same horizontal line and positioned on the same vertical plane with the axis of the transverse supporting beam.
Preferably, the steel plate assembly comprises a plurality of steel plates which are arranged in the longitudinal bridge direction at equal intervals, and the steel plate assembly is arranged at the center of the pier body.
Preferably, the steel plate assemblies are arranged in the gap along the transverse bridge direction, and the transverse beam steel reinforcement frameworks are arranged in the gap.
Preferably, the bottom of the concrete steel pipe column is connected with the steel plate assembly through a connecting flange.
Preferably, a plurality of distribution beams are uniformly arranged between the bottom of the outer beam die and the transverse supporting beam in the transverse bridge direction, the distribution beams are uniformly arranged on the same horizontal plane, and the distribution beams and the transverse supporting beam are vertically arranged.
The invention provides a construction method of a large-span cable-stayed beam of a bent pier across a highway, which comprises the following steps:
the method comprises the following steps: the construction of foundation support comprising a bearing platform and a pier body is carried out under the condition that the normal traffic of a traffic lane is not influenced, a hole is pre-embedded in the pier body, the hole is of a rectangular structure, and a steel plate assembly is pre-embedded in the center of the pier body;
step two: installing a bearing platform, installing a longitudinal support beam in a hole of a pier body along a longitudinal bridge direction, installing a transverse support beam above the longitudinal support beam along a transverse bridge direction, vertically arranging a distribution beam above the transverse support beam, installing a transverse beam outer mold on the distribution beam, installing a transverse beam steel reinforcement framework in a gap of a steel plate assembly, arranging the transverse beam steel reinforcement framework along the transverse bridge direction, and installing a plurality of connecting lug plates on the transverse support beam;
step three: installing a concrete steel pipe column, fixedly connecting the steel pipe column to the steel plate assembly through a connecting flange, pouring concrete in the steel pipe column to form the concrete steel pipe column, and meanwhile, arranging reserved pore channels on the concrete steel pipe column at different heights;
step four: longitudinal hanging beams with different heights, which are parallel to each other, are arranged in the longitudinal bridge direction, the longitudinal hanging beams penetrate through the suspended ends of the concrete steel pipe columns to be provided with hanging rings, the cable-stayed lead screws are respectively connected and arranged with the hanging rings and the connecting lug plates through pin shafts, and the cable-stayed lead screws are used for arching a plurality of supporting points for the transverse supporting beams, so that the strength and the rigidity of the support structure are ensured to meet the construction requirements of the cross beam;
step five: and pouring to complete beam construction, dismantling the support, and dismantling the support stressed structure and the bearing platform in sequence from top to bottom.
The invention has the advantages that: the concrete steel pipe column is connected with the steel plate assembly through the connecting flange, the concrete steel pipe column is provided with a reserved hole, the longitudinal hanging beam penetrates through the reserved hole and is arranged in a longitudinal bridge shape, hanging rings are arranged on two sides of the longitudinal hanging beam, the transverse beam steel bar framework is transversely arranged in a gap of the steel plate assembly in a bridge direction, the transverse beam outer mold is arranged on the bearing platform and is arranged in a frame surrounded by the concrete steel pipe column, after the installation is finished, the inclined pull lead screws are arranged and are respectively connected with the hanging rings and the connecting lug plates through pin shafts, and the inclined pull lead screws are used for arching a plurality of supporting points for the transverse supporting beam, so that the strength and rigidity of the support structure meet the construction requirements of the transverse beam.
Drawings
FIG. 1 is a schematic cross-bridge structure diagram of a large-span cable-stayed cross beam construction bracket of a bent pier spanning highway;
FIG. 2 is a schematic longitudinal and bridge-directional structural diagram of a large-span cable-stayed cross beam construction bracket of a bent pier spanning highway;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2 of the large-span cable-stayed cross beam construction bracket for the bent pier of the highway;
wherein: 1. bearing platform, 2, pier body, 3, longitudinal support beam, 4, transverse support beam, 5, steel plate assembly, 6, crossbeam external mold, 7, connecting flange, 8, longitudinal hanging beam, 9, hanging ring, 10, concrete steel pipe column, 11, oblique pull screw rod, 12, connecting lug plate, 13, distribution beam, 14 and pin shaft.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
The specific implementation mode of the invention is as follows: as shown in figures 1-3, a large-span cable-stayed beam construction support for a high-speed road bent frame pier comprises foundation supports arranged at two sides of a sub-crossing lane at the bottom, a bearing platform arranged on the foundation supports, a beam outer mold 6 arranged on the bearing platform for beam pouring construction, and a supporting stress structure at four corners of the beam outer mold 6, wherein the foundation supports comprise bearing platforms 1 arranged at two sides of the crossing lane and a pier body 2 arranged on the bearing platforms 1, holes are pre-embedded in the pier body 2, the bearing structure comprises a longitudinal support beam 3 penetrating through the holes of the pier body 2 along a longitudinal bridge direction, a transverse support beam 4 arranged above the longitudinal support beam 3, and a steel plate assembly 5 pre-embedded on the pier body 2, a plurality of connecting lug plates 12 are arranged on the transverse support beam 4, and the supporting stress structure comprises a concrete steel pipe column 10 arranged on the bearing structure, Vertical hanging beam 8, draw lead screw 11 to one side, concrete steel pipe post 10 sets up in the top of steel sheet subassembly 5, draw lead screw 11 one end and vertical hanging beam 8 to one side and be connected, the other end and connection otic placode 12 are connected.
Preferably, the concrete steel pipe column 10 is provided with a reserved hole, and the longitudinal hanging beam 8 penetrates through the reserved hole of the adjacent concrete steel pipe column 10 in the longitudinal bridge direction.
Preferably, two longitudinal hanging beams 8 are arranged on the same concrete steel pipe column 10 in a penetrating manner in the height direction.
Preferably, the hanging end of the longitudinal hanging beam 8 penetrating through the concrete steel pipe column 10 is provided with a hanging ring 9, the hanging ring 9 is of a semicircular structure with a rectangular lower end at the upper end, a mounting hole I is formed in the semicircle, a pin shaft 14 is arranged in the mounting hole I to connect and fix the diagonal lead screw 11, and the cross sections of the longitudinal hanging beam 8, the longitudinal supporting beam 3 and the transverse supporting beam 4 are of rectangular structures.
Preferably, the connecting lug plate 12 is a semicircular structure provided with a mounting hole II, a pin shaft 14 is arranged in the mounting hole II to connect and fix the inclined-pulling screw rod 11, and each connecting lug plate 12 on the transverse supporting beam 4 is provided with a plurality of connecting lug plates 12 which are positioned on the same horizontal line and positioned on the same vertical plane with the axis of the transverse supporting beam 4.
Preferably, steel sheet subassembly 5 includes the steel sheet that a plurality of longitudinal bridges were laid to the equidistance, leaves the clearance between the steel sheet, steel sheet subassembly 5 sets up the central point department at pier shaft 2.
Preferably, the steel plate assemblies 5 are arranged in the gap along the transverse bridge direction, and the transverse beam steel reinforcement frameworks are arranged in the gap along the transverse bridge direction.
Preferably, the bottom of the concrete steel pipe column 10 is connected with the steel plate assembly 5 through a connecting flange 7.
Preferably, a plurality of distribution beams 13 are uniformly arranged between the bottom of the cross beam outer die 6 and the transverse supporting beam 4 in the transverse bridge direction, the distribution beams 13 are uniformly arranged on the same horizontal plane, and the distribution beams 13 are vertically arranged with the transverse supporting beam 4.
The invention provides a construction method of a large-span cable-stayed beam of a bent pier across a highway, which comprises the following steps:
the method comprises the following steps: the construction of foundation support comprising a bearing platform 1 and a pier body 2 is carried out under the condition that the normal traffic of a traffic lane is not influenced, holes are pre-embedded in the pier body 2, the holes are of a rectangular structure, and a steel plate assembly 5 is pre-embedded in the center of the pier body 2;
step two: installing a bearing platform, installing a longitudinal support beam 3 in a hole of a pier body 2 along a longitudinal bridge direction, installing a transverse support beam 4 above the longitudinal support beam 3 along a transverse bridge direction, vertically arranging a distribution beam 13 above the transverse support beam 4, installing a transverse beam outer mold 6 on the distribution beam 13, installing a transverse beam steel reinforcement framework in a gap of a steel plate assembly 5, arranging the transverse beam steel reinforcement framework along the transverse bridge direction, and installing a plurality of connecting lug plates 12 on the transverse support beam 4;
step three: installing a concrete steel pipe column 10, fixedly connecting the steel plate component 5 with the steel pipe column through a connecting flange 7, pouring concrete in the steel pipe column to form the concrete steel pipe column 10, and meanwhile, arranging reserved pore channels on different heights of the concrete steel pipe column 10;
step four: longitudinal hanging beams 8 which are parallel to each other and have different heights are arranged in the longitudinal bridge direction, hanging rings 9 are arranged at the hanging ends of the longitudinal hanging beams 8 penetrating through concrete steel pipe columns 10, diagonal lead screws 11 are respectively connected and arranged with the hanging rings 9 and connecting lug plates 12 through pin shafts 14, and a plurality of supporting points are lifted for the transverse supporting beams 4 through the diagonal lead screws 11, so that the strength and the rigidity of the support structure are ensured to meet the construction requirements of the cross beam;
step five: and pouring to complete beam construction, dismantling the support, and dismantling the support stressed structure and the bearing platform in sequence from top to bottom.
While the preferred embodiments of the invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A large-span cable-stayed crossbeam construction support for a high-speed road bent frame pier is characterized by comprising foundation supports arranged on two sides of a sub-crossing lane at the bottom, a bearing platform arranged on the foundation supports, a crossbeam outer mold arranged on the bearing platform and used for crossbeam pouring construction, and a supporting stress structure for separating four corners of the crossbeam outer mold, wherein the foundation supports comprise bearing platforms arranged on two sides of the crossing lane and a pier body arranged on the bearing platforms, holes are pre-buried in the pier body, the bearing structure comprises a longitudinal supporting beam penetrating through the holes of the pier body along a longitudinal bridge, a transverse supporting beam arranged above the longitudinal supporting beam and a steel plate assembly pre-buried on the pier body, a plurality of connecting lug plates are arranged on the transverse supporting beam, the supporting stress structure comprises a concrete steel pipe column, a longitudinal hanging beam and a cable-stayed lead screw which are arranged on the bearing structure, the concrete steel pipe column is arranged above the steel plate assembly, one end of the diagonal lead screw is connected with the longitudinal hanging beam, and the other end of the diagonal lead screw is connected with the connecting lug plate.
2. The large-span cable-stayed beam construction bracket for the high-speed road bent frame pier according to claim 1, wherein a reserved hole is formed in the concrete steel pipe column, and the longitudinal hanging beam penetrates through the reserved hole in the longitudinal bridge to the adjacent concrete steel pipe column.
3. The large-span cable-stayed beam construction bracket for the bent frame pier spanning the highway according to claim 2, wherein two longitudinal hanging beams are arranged on the same concrete steel pipe column in a penetrating manner in the height direction.
4. The construction support for the large-span cable-stayed cross beam of the high-speed road bent frame pier according to claim 3, wherein the longitudinal hanging beam penetrates out of the suspended end of the concrete steel pipe column and is provided with a hanging ring, the hanging ring is of a structure with a rectangular upper end and a semicircular lower end, a mounting hole I is formed in the semicircular structure, and a hinge pin is arranged in the mounting hole I to connect and fix the cable-stayed lead screw.
5. The construction support of the large-span cable-stayed beam of the high-speed road bent frame pier according to claim 4, wherein the connecting lug plates are of a semicircular structure provided with a mounting hole II, a pin shaft is arranged in the mounting hole II to connect and fix the cable-stayed lead screws, a plurality of connecting lug plates are arranged on each transverse supporting beam, and the connecting lug plates are positioned on the same horizontal line and on the same vertical plane with the axis of the transverse supporting beam.
6. The large-span cable-stayed beam construction bracket for the bent frame piers spanning the expressway according to claim 5, wherein the steel plate assembly comprises a plurality of steel plates which are equidistantly arranged in the longitudinal direction of the bridge, and the steel plate assembly is arranged at the center of the pier body.
7. The large-span cable-stayed beam construction bracket for the bent piers spanning the highways according to claim 6, wherein a beam steel reinforcement framework is arranged in the gaps of the steel plate assemblies along the transverse bridge direction.
8. The large-span cable-stayed beam construction bracket for the bent frame pier of the expressway according to claim 1, wherein the bottom of the concrete steel pipe column is connected with a steel plate assembly through a connecting flange.
9. The large-span cable-stayed beam construction bracket for the bent piers spanning the highways according to claim 1, characterized in that a plurality of distribution beams are uniformly arranged between the bottom of the beam outer mold and the transverse supporting beams in the transverse bridge direction, the distribution beams are uniformly arranged on the same horizontal plane, and the distribution beams are vertically arranged with the transverse supporting beams.
10. The method for constructing the large-span cable-stayed beam of the bent frame pier of the cross highway by using the construction support as claimed in claim 1 is characterized by comprising the following steps of:
the method comprises the following steps: the construction of foundation support comprising a bearing platform and a pier body is carried out under the condition that the normal traffic of a traffic lane is not influenced, a hole is pre-embedded in the pier body, the hole is of a rectangular structure, and a steel plate assembly is pre-embedded in the center of the pier body;
step two: installing a bearing platform, installing a longitudinal support beam in a hole of a pier body along a longitudinal bridge direction, installing a transverse support beam above the longitudinal support beam along a transverse bridge direction, vertically arranging a distribution beam above the transverse support beam, installing a transverse beam outer mold on the distribution beam, installing a transverse beam steel reinforcement framework in a gap of a steel plate assembly, arranging the transverse beam steel reinforcement framework along the transverse bridge direction, and installing a plurality of connecting lug plates on the transverse support beam;
step three: installing a concrete steel pipe column, fixedly connecting the steel pipe column to the steel plate assembly through a connecting flange, pouring concrete in the steel pipe column to form the concrete steel pipe column, and meanwhile, arranging reserved pore channels on the concrete steel pipe column at different heights;
step four: longitudinal hanging beams with different heights, which are parallel to each other, are arranged in the longitudinal bridge direction, the longitudinal hanging beams penetrate through the suspended ends of the concrete steel pipe columns to be provided with hanging rings, the cable-stayed lead screws are respectively connected and arranged with the hanging rings and the connecting lug plates through pin shafts, and the cable-stayed lead screws are used for arching a plurality of supporting points for the transverse supporting beams, so that the strength and the rigidity of the support structure are ensured to meet the construction requirements of the cross beam;
step five: and pouring to complete beam construction, dismantling the support, and dismantling the support stressed structure and the bearing platform in sequence from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110861594.5A CN113605241A (en) | 2021-07-29 | 2021-07-29 | Large-span cable-stayed beam construction support and method for high-speed road bent frame pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110861594.5A CN113605241A (en) | 2021-07-29 | 2021-07-29 | Large-span cable-stayed beam construction support and method for high-speed road bent frame pier |
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| Publication Number | Publication Date |
|---|---|
| CN113605241A true CN113605241A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110861594.5A Pending CN113605241A (en) | 2021-07-29 | 2021-07-29 | Large-span cable-stayed beam construction support and method for high-speed road bent frame pier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657882A (en) * | 2022-03-25 | 2022-06-24 | 南通大学 | Super-huge type 0# block cast-in-place box girder bracket structure and mounting method thereof |
| CN115976976A (en) * | 2023-03-17 | 2023-04-18 | 中化学交通建设集团有限公司 | Large-scale rapid assembling type model of midspan non-landing support and construction method thereof |
-
2021
- 2021-07-29 CN CN202110861594.5A patent/CN113605241A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114657882A (en) * | 2022-03-25 | 2022-06-24 | 南通大学 | Super-huge type 0# block cast-in-place box girder bracket structure and mounting method thereof |
| CN115976976A (en) * | 2023-03-17 | 2023-04-18 | 中化学交通建设集团有限公司 | Large-scale rapid assembling type model of midspan non-landing support and construction method thereof |
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