CN117385772A - Novel and old bridge piece together wide diaphragm prestressing force construction operation platform - Google Patents
Novel and old bridge piece together wide diaphragm prestressing force construction operation platform Download PDFInfo
- Publication number
- CN117385772A CN117385772A CN202311111853.8A CN202311111853A CN117385772A CN 117385772 A CN117385772 A CN 117385772A CN 202311111853 A CN202311111853 A CN 202311111853A CN 117385772 A CN117385772 A CN 117385772A
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- Prior art keywords
- bridge
- bottom plate
- support
- old bridge
- construction
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 83
- 239000010959 steel Substances 0.000 claims abstract description 83
- 239000002023 wood Substances 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims description 24
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a prestressed construction operation platform for a novel and old bridge spliced wide diaphragm plate, which relates to the technical field of bridge construction and comprises a bottom plate support, a sliding support, a steel wire rope, an old bridge T-beam and a novel bridge T-beam, wherein a cross rod and a wood plate are arranged between two transverse rods of the bottom plate support, and two ends of the cross rod are welded with the bottom plate support; according to the invention, by arranging the longer bottom plate support of the bottom plate of the operation platform, operators can penetrate to the inner side of the T-shaped beam of the old bridge to perform diaphragm pre-stress anchor installation, pre-stress tensioning and anchor sealing construction, the special erection of the T-shaped beam inner side construction operation platform of the old bridge is not needed, or the bridge inspection vehicle is used for the inner side construction of the T-shaped beam of the old bridge, the stability of the bottom plate support is increased by arranging the stable support rods, and the steel wire rope is used for hanging, so that the bridge floor support device is suitable for the construction of the spliced wide diaphragm which needs to be matched by a plurality of persons, and the bridge floor support device is provided with the pulley device, so that the quick movement can be realized, the construction period can be saved, and the construction efficiency can be improved.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a prestressed construction operation platform for a novel and old bridge spliced wide diaphragm plate.
Background
Along with the development of society, traffic flow increases dramatically, and many highways often have traffic jam due to the insufficient width of the original road, and the current traffic demands cannot be met, so that the road is necessary to be upgraded and reformed. If the expressway is lifted and reformed, the original bridge is removed and rebuilt at a great cost, so that the newly-built bridge and the old bridge are spliced and widened to achieve the purpose of widening the bridge, and the bridge is expected to be widened in the expressway lifting and reforming process in the future.
The bridge widening often relates to the connection construction of the diaphragm plates of the new bridge and the old bridge, and the construction of the diaphragm plates of the new bridge and the old bridge relates to the construction contents of the detection of the prestressed steel strands and the main reinforcements of the old bridge, the drilling of the pore canals of the prestressed reinforcements, the drilling of the pore canals of the reinforced reinforcements, the tensioning of the prestressed reinforcements, the grouting of the pore canals, the reinforced concrete of the diaphragm plates and the like.
The utility model discloses a splice structure is widened to long bridge in chinese patent CN103541310B, including old bridge, new bridge and splice seam, the transverse connection between old bridge and the new bridge is spliced through the splice seam, the splice seam comprises continuous splice section and discrete splice section two parts, adopt cast-in-place wet seam to be connected with the diaphragm between the new bridge girder of continuous splice section and the old bridge girder, adopt every one section distance to set up a connecting element between the new bridge girder of discrete splice section and the old bridge girder to connect to make the new and old bridge after widening form firm overall structure. The construction method is simple, the construction period is short, the widened old bridge support is prevented from shearing and damaging, the method is suitable for the widened construction of long-link bridges of highways of various grades, and old bridge resources are fully utilized.
The construction of the bridge splicing construction splicing transverse partition plate relates to construction contents such as detection of the prestressed steel strands and the main tendons of an old bridge, drilling of the prestressed tendon duct and the like, and the construction contents are matched by multiple persons, heavier in equipment and high in safety risk. The conventional working platform penetrates into the inner side of the T beam of the old bridge to carry out construction, so that a stable, firm, simple, convenient and movable working platform is required on a construction site, and the construction quality and safety are ensured.
Disclosure of Invention
The invention aims to provide a novel and old bridge spliced wide diaphragm prestressed construction operation platform which is stable and light, can meet the requirements of diaphragm concrete pouring construction operation, can meet the requirements of diaphragm prestressed and bar planting construction, and improves the construction efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a wide diaphragm prestressed construction operation platform is pieced together to new bridge, includes bottom plate support, sliding support, wire rope, old bridge T roof beam and new bridge T roof beam, the bottom plate support is the setting of groined type, all be provided with horizontal pole and plank between two horizontal poles of bottom plate support, the both ends and the bottom plate support welding of horizontal pole, the plank is laid in the top of horizontal pole, wire rope's one end and sliding support fixed connection, the outside of bottom plate support is provided with the connection structure that supplies wire rope other end fixed connection;
the connecting structure comprises a U-shaped steel bar, the bottom plate support is located in the U-shaped steel bar, two vertical rods of the bottom plate support are welded with two sides of the U-shaped steel bar respectively, platform handrails are welded on the outer sides of the vertical rods of the U-shaped steel bar, and stable supporting rods for being abutted to two sides of an old bridge T beam and two sides of a new bridge T beam are welded on the inner sides of the two vertical rods of the U-shaped steel bar.
Preferably, the connecting structure further comprises a first rolling circular ring and a second rolling circular ring, the first rolling circular ring is integrally formed at two ends of the U-shaped steel bar, the second rolling circular ring is integrally formed at one end of the platform railing, and the steel wire rope penetrates through the first rolling circular ring and the second rolling circular ring and is fixedly connected with the first rolling circular ring and the second rolling circular ring.
Preferably, the stabilizing support rod comprises a steel pipe and an adjustable support rod, the steel pipe is welded with the U-shaped steel bars, the adjustable support rod is provided with two steel pipes, two ends of the steel pipe are respectively connected with adjusting nuts in a rotating mode, and one ends of the two adjustable support rods are respectively inserted into two ends of the steel pipe and are in threaded connection with the adjusting nuts.
Preferably, the sliding support comprises a sliding table, the sliding table is arranged in a cross shape, four corners of the sliding table are all rotationally connected with pulleys, one end of the steel wire rope is bolted with two vertical rods of the sliding table, and two steel wire ropes at the bottom of the sliding table are arranged.
Preferably, the sliding tables are provided with two groups, and the sliding tables are positioned between the transverse beams of the old bridge T beam and the new bridge T beam.
Preferably, the bottom plate support and the sliding table are both made of 6.3# channel steel, the U-shaped steel bars are made of threaded steel with the diameter of 25mm, and the cross bars and the platform rails are made of threaded steel with the diameter of 12 mm.
Preferably, the thickness of the wood board is between 10mm and 40mm, and the diameter of the steel pipe is between 60 and 65 mm.
Preferably, the adjustable support rod is made of round steel with the diameter of 50mm, and the diameter of the pulley is between 20cm and 24 cm.
Compared with the prior art, the prestressed construction operation platform for the novel and old bridge spliced wide diaphragm plate has the following advantages:
1. according to the invention, by arranging the longer bottom plate support of the bottom plate of the operation platform, operators can penetrate to the inner side of the T-shaped beam of the old bridge to perform transverse diaphragm prestress anchor installation, prestress tensioning and anchor sealing construction, and the inner side construction of the T-shaped beam of the old bridge is not required to be specially erected, or a bridge inspection vehicle is used for inner side construction of the T-shaped beam of the old bridge.
2. The stability of the bottom plate support is improved by arranging the stable supporting rods, and the steel wire rope is adopted for hanging, so that the invention is applicable to construction of the spliced wide diaphragm plate which needs to be matched by a plurality of people, and the bridge deck supporting device is provided with the pulley device, so that the quick movement can be realized. The construction period can be saved, and the construction efficiency can be improved.
Drawings
FIG. 1 is a construction view of a work platform of the present invention;
FIG. 2 is a plan view of a base plate of the present invention;
FIG. 3 is an elevation view of a work platform floor of the present invention;
fig. 4 is a schematic view of the position of the U-shaped rebar relative to the bottom bracket of the present invention;
FIG. 5 is a schematic view showing the structure of the stabilizer bar according to the present invention;
FIG. 6 is a schematic view of the structure of the floor stand of the present invention;
FIG. 7 is a schematic view of a sliding bracket according to the present invention;
fig. 8 is a schematic view of the structure of the pulley of the present invention.
In the figure: 1. a bottom plate bracket; 2. a sliding support; 3. a wire rope; 4. old bridge T beam; 5. a new bridge T-beam; 6. a cross bar; 7. a wood board; 8. u-shaped steel bars; 9. platform railing; 10. a stabilizing support rod; 11. a first rolled ring; 12. a second rolled ring; 1001. a steel pipe; 1002. an adjustable support bar; 1003. an adjusting nut; 201. a sliding table; 202. and (3) a pulley.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a novel and old bridge spliced wide diaphragm prestressed construction working platform as shown in figures 1-8, which comprises a bottom plate support 1, a sliding support 2, a steel wire rope 3, an old bridge T beam 4 and a novel bridge T beam 5, wherein the bottom plate support 1 is arranged in a groined shape, a cross rod 6 and a wood plate 7 are arranged between two transverse rods of the bottom plate support 1, two ends of the cross rod 6 are welded with the bottom plate support 1, the wood plate 7 is paved above the cross rod 6, one end of the steel wire rope 3 is fixedly connected with the sliding support 2, and a connecting structure for fixedly connecting the other end of the steel wire rope 3 is arranged outside the bottom plate support 1.
The connecting structure comprises a U-shaped steel bar 8, a bottom plate support 1 is positioned in the U-shaped steel bar 8, two vertical rods of the bottom plate support 1 are welded with two sides of the U-shaped steel bar 8 respectively, a platform railing 9,U is welded on the outer side of the vertical rods of the U-shaped steel bar 8, and stable support rods 10 for propping against two sides of an old bridge T beam 4 and a new bridge T beam 5 are welded on the inner sides of the two vertical rods of the U-shaped steel bar 8.
During the preparation, every certain distance welding horizontal pole 6 between groined type bottom plate support 1 for lay plank 7, bottom plate support 1 and U-shaped reinforcing bar 8 and platform railing 9 enclose into a work platform, can carry out many people's cooperation construction, make the platform adopt wire rope 3 to hoist back through setting up stable bracing piece 10, stable bracing piece 10's both ends support tightly makes the platform stable with the bridge lateral wall of old bridge and new bridge respectively. All the components forming the platform are made of common steel bars, channel steel, templates and the like, so that the cost is saved, and the construction is convenient.
The connecting structure further comprises a first rolling circular ring 11 and a second rolling circular ring 12, wherein the first rolling circular ring 11 is integrally formed at two ends of the U-shaped steel bar 8, the second rolling circular ring 12 is integrally formed at one end of the platform railing 9, and the steel wire rope 3 penetrates through the first rolling circular ring 11 and the second rolling circular ring 12 and is fixedly connected with the first rolling circular ring 11 and the second rolling circular ring 12.
By arranging a circular ring on the top of the U-shaped steel bar 8 and above one end of the platform railing 9, a connection point is provided for the hoisting platform of the steel wire rope 3.
The stabilizing support rod 10 comprises a steel tube 1001 and an adjustable support rod 1002, wherein the steel tube 1001 is welded with a U-shaped steel bar 8, the two adjustable support rods 1002 are arranged, two ends of the steel tube 1001 are respectively and rotatably connected with an adjusting nut 1003, and one ends of the two adjustable support rods 1002 are respectively inserted into two ends of the steel tube 1001 and are in threaded connection with the adjusting nuts 1003.
When the stable supporting rod 10 is used, the steel tube 1001 is welded with the platform, the adjustable supporting rods 1002 which are in sliding connection in the steel tube 1001 extend out towards two ends by rotating the adjusting nuts 1003, one ends of the two adjustable supporting rods 1002 are respectively abutted against one sides of the old bridge T beam 4 and the new bridge T beam 5, and the base plate support 1 is prevented from shaking.
The sliding support 2 comprises sliding tables 201, the sliding tables 201 are arranged in a cross shape, four corners of the sliding tables 201 are respectively connected with pulleys 202 in a rotating mode, one end of each steel wire rope 3 is bolted to two vertical rods of the sliding tables 201, and two steel wire ropes 3 at the bottom of each sliding table 201 are respectively arranged.
The sliding tables 201 are provided with two groups, and the sliding tables 201 are positioned between the transverse beams of the old bridge T-beam 4 and the new bridge T-beam 5.
By providing two slide tables 201, the platform can be moved by the pulley 202 when it is required to move after lifting, and the pulley 202 is braked by the template in normal construction.
The bottom plate support 1 and the sliding table 201 are both made of 6.3# channel steel, the U-shaped steel bar 8 is made of threaded steel with the diameter of 25mm, and the cross bar 6 and the platform railing 9 are made of threaded steel with the diameter of 12 mm.
The thickness of the wood board 7 is between 10mm and 40mm, and the diameter of the steel pipe 1001 is between 60 and 65 mm.
The adjustable support bar 1002 is made of round steel with the diameter of 50mm, and the diameter of the pulley 202 is between 20cm and 24 cm.
The using method is as follows: during construction, the length of the transverse bottom plate bracket 1 is adjusted according to the gap between the outer side beams of the old bridge and the new bridge, during site construction, the bottom working platform is welded and assembled, then the bottom working platform is lifted upwards by a small-sized automobile crane, and then the steel wire rope 3 is hung on the assembled sliding bracket 2 on the bridge deck. The operator descends to the working platform through simple and easy cat ladder, adjusts stable bracing piece 10 and makes adjustable bracing piece 1002 stretch out to both ends in steel pipe 1001 through rotating adjusting nut 1003 sliding connection, makes it support between the T roof beam web of new bridge and old bridge, then screws adjusting nut 1003, makes the platform firm not rock. After the platform is installed in place, the two sides of the pulley 202 are braked by stones or templates, and the next working surface is moved by the four pulleys 202 after the construction is completed. The working platform not only ensures the construction quality and safety of the transverse partition plates of the spliced wide bridge, but also is convenient to transfer, is simple and convenient to operate, and can improve the working efficiency.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. A novel and old bridge piece together wide diaphragm prestressing force construction operation platform, its characterized in that: the novel steel wire rope comprises a bottom plate support (1), a sliding support (2), steel wire ropes (3), old bridge T beams (4) and new bridge T beams (5), wherein the bottom plate support (1) is arranged in a groined shape, a cross rod (6) and a wood plate (7) are arranged between two transverse rods of the bottom plate support (1), two ends of the cross rod (6) are welded with the bottom plate support (1), the wood plate (7) is paved above the cross rod (6), one end of each steel wire rope (3) is fixedly connected with the sliding support (2), and a connecting structure for fixedly connecting the other end of each steel wire rope (3) is arranged outside the bottom plate support (1);
the connecting structure comprises a U-shaped steel bar (8), the bottom plate support (1) is located in the U-shaped steel bar (8), two vertical rods of the bottom plate support (1) are welded with two sides of the U-shaped steel bar (8) respectively, platform rails (9) are welded on the outer sides of the vertical rods of the U-shaped steel bar (8), and stable supporting rods (10) for propping up two sides of an old bridge T-shaped beam (4) and a new bridge T-shaped beam (5) are welded on the inner sides of the two vertical rods of the U-shaped steel bar (8).
2. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate according to claim 1, wherein the prestressed construction work platform is characterized in that: the connecting structure further comprises a first rolling circular ring (11) and a second rolling circular ring (12), wherein the first rolling circular ring (11) is integrally formed at two ends of the U-shaped steel bar (8), the second rolling circular ring (12) is integrally formed at one end of the platform railing (9), and the steel wire rope (3) penetrates through the first rolling circular ring (11) and the second rolling circular ring (12) and is fixedly connected with the first rolling circular ring (11) and the second rolling circular ring (12).
3. The pre-stressing construction work platform for the splicing wide diaphragm of the new bridge and the old bridge according to claim 2, wherein: the stabilizing support rod (10) comprises a steel tube (1001) and an adjustable support rod (1002), the steel tube (1001) is welded with a U-shaped steel bar (8), the adjustable support rod (1002) is provided with two ends of the steel tube (1001) are rotatably connected with adjusting nuts (1003), and one ends of the two adjustable support rods (1002) are inserted into two ends of the steel tube (1001) respectively and are in threaded connection with the adjusting nuts (1003).
4. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate according to claim 3, wherein the prestressed construction work platform is characterized in that: the sliding support (2) comprises a sliding table (201), the sliding table (201) is arranged in a cross shape, four corners of the sliding table (201) are respectively connected with a pulley (202) in a rotating mode, one end of the steel wire rope (3) is connected with two vertical rods of the sliding table (201) in a bolt mode, and two steel wire ropes (3) at the bottom of the sliding table (201) are respectively arranged.
5. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate is characterized in that: the sliding tables (201) are provided with two groups, and the sliding tables (201) are positioned between the transverse beams of the old bridge T beam (4) and the new bridge T beam (5).
6. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate, which is disclosed in claim 5, is characterized in that: the bottom plate support (1) and the sliding table (201) are both made of 6.3# channel steel, the U-shaped steel bars (8) are made of threaded steel with the diameter of 25mm, and the cross bars (6) and the platform rails (9) are made of threaded steel with the diameter of 12 mm.
7. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate, which is disclosed in claim 6, is characterized in that: the thickness of the wood board (7) is between 10mm and 40mm, and the diameter of the steel pipe (1001) is between 60 and 65 mm.
8. The prestressed construction work platform for the new and old bridge spliced wide diaphragm plate, which is disclosed in claim 7, is characterized in that: the adjustable supporting rod (1002) is made of round steel with the diameter of 50mm, and the diameter of the pulley (202) is between 20cm and 24 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311111853.8A CN117385772A (en) | 2023-08-31 | 2023-08-31 | Novel and old bridge piece together wide diaphragm prestressing force construction operation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311111853.8A CN117385772A (en) | 2023-08-31 | 2023-08-31 | Novel and old bridge piece together wide diaphragm prestressing force construction operation platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117385772A true CN117385772A (en) | 2024-01-12 |
Family
ID=89465572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311111853.8A Pending CN117385772A (en) | 2023-08-31 | 2023-08-31 | Novel and old bridge piece together wide diaphragm prestressing force construction operation platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117385772A (en) |
-
2023
- 2023-08-31 CN CN202311111853.8A patent/CN117385772A/en active Pending
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