CN219653525U - Compression bar for horizontal splicing, pulling up and vertical rotation of single-column internal tilting steel tower of steel box girder cable-stayed bridge - Google Patents
Compression bar for horizontal splicing, pulling up and vertical rotation of single-column internal tilting steel tower of steel box girder cable-stayed bridge Download PDFInfo
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- CN219653525U CN219653525U CN202320678444.5U CN202320678444U CN219653525U CN 219653525 U CN219653525 U CN 219653525U CN 202320678444 U CN202320678444 U CN 202320678444U CN 219653525 U CN219653525 U CN 219653525U
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- compression bar
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- cable
- hinge
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- 230000006835 compression Effects 0.000 title claims abstract description 75
- 238000007906 compression Methods 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 239000003381 stabilizer Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000010276 construction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000004904 shortening Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to a compression bar for the horizontal splicing, pulling and vertical rotation of a single-column internal tilting steel tower of a steel box girder cable-stayed bridge, which comprises a compression bar main body, wherein one end of the compression bar main body is provided with a first rotary hinged support, the first rotary hinged support is hinged and fixed on an ear plate seat on the steel tower through a pin shaft, the other end of the compression bar main body is provided with a second rotary hinged support, the second rotary hinged support is respectively connected with a traction cable anchor beam and a pull rod anchor beam through a pin shaft, the traction cable anchor beam is fixedly connected with a traction cable steel strand, and the pull rod anchor beam is fixedly connected with the pull rod steel strand; compared with the traditional vertical rotation construction process, the utility model reduces the number of cables and the connection times, and only needs to arrange the inhaul cable along the central axis of the steel tower for connection, thereby simplifying the construction process, reducing the labor cost and shortening the construction period.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, and particularly relates to a compression bar for horizontal splicing, pulling up and vertical rotation of a single-column internal tilting steel tower of a steel box girder cable-stayed bridge.
Background
The traditional construction method for the single-column internal tilting steel tower of the cable-stayed bridge of the steel box girder comprises the step of vertically rotating by means of a vertical rotating frame in a horizontal splicing and pulling mode, namely, ear plate connecting front and rear zippers are respectively arranged at two right angles at the upper part of the vertical rotating frame. The concrete construction method comprises the following steps: and one end of the front stay cable is connected with the anchor point of the front stay cable of the main tower, the other end of the front stay cable is connected with the lug plate at the front end of the vertical rotating frame, one end of the rear stay cable is connected with the lug plate at the rear end of the vertical rotating frame, and the other end of the rear stay cable is connected with the anchor point of the rear stay cable of the steel box girder. The following disadvantages are evident for this conventional construction method: the lug plates at the two right angles on the upper part of the vertical rotating frame are connected with the front and rear inhaul cables respectively to vertically rotate, so that more steel cable wires are needed, the construction cost is high, more constructors are needed, and the time is more.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the pressure lever for the horizontal splicing and the vertical rotation of the single-column internal tilting steel tower of the cable-stayed bridge of the steel box girder.
The utility model aims at solving the problems that the single-column internal tilting steel tower of the cable-stayed bridge is prone to be spliced, pulled and vertically rotated by the aid of the technical scheme, the cable-stayed bridge comprises a compression bar main body, a first rotating hinged support is arranged at one end of the compression bar main body and is hinged and fixed on an ear plate support on the steel tower through a pin shaft, a second rotating hinged support is arranged at the other end of the compression bar main body, a traction cable anchor beam and a pull rod anchor beam are respectively connected to the second rotating hinged support through pin shafts, the traction cable anchor beam is fixedly connected with a traction cable steel strand, and the pull rod anchor beam is fixedly connected with the pull rod steel strand.
The beneficial effects of the utility model are as follows: compared with the prior art, the vertical rotating frame is replaced by the compression bar to rotate and vertically rotate, the traction cable steel stranded wires and the pull rod steel stranded wires can be connected by the conversion joint at the top of the compression bar through the corresponding rotating hinge connection on the compression bar bottom rotating hinge and the steel tower, the number of cable wires and the connection times are reduced compared with the traditional vertical rotating construction process, and the cable wires are only required to be arranged along the central axis of the steel tower for connection, so that the construction process is simplified, the labor cost is reduced, and the construction period is shortened.
Preferably, the compression bar main body comprises a stabilizer bar and two main compression bars, the stabilizer bar is positioned at the center of one side of the two main compression bars, and the two main compression bars and one stabilizer bar are fixedly connected through a plurality of web members to form a triangular lattice truss; through the setting of the depression bar main part of above-mentioned structure for the structure of depression bar main part is more firm, in the work progress, security performance and stability are better.
Preferably, the first hinge support is provided with two and is respectively fixed on the bottoms of the two main compression bars, a reinforcing rib is arranged between the first hinge support and the main compression bars, and the reinforcing ribs are distributed on the circumferential wall of the main compression bars in a surrounding manner; the two first rotating hinge supports are arranged, so that stability is better in the whole vertical rotation process of the pressing rod, and the reinforcing ribs are arranged at the same time, so that stability between the first rotating hinge supports and the main pressing rod is better.
Preferably, the second hinge support is provided with two and is respectively fixed on the top parts of the two main compression bars, a reinforcing rib is arranged between the second hinge support and the main compression bars, and the reinforcing ribs are distributed on the circumferential wall of the main compression bars in a surrounding manner; the two second hinge supports are arranged, so that stability is better in the whole vertical rotation process of the compression bar, and the reinforcing ribs are arranged at the same time, so that stability between the second hinge supports and the main compression bar is better.
Preferably, the second hinge support is provided with two hinge holes, one hinge hole is connected with the traction cable anchor beam through a pin shaft, and the other hinge hole is connected with the pull rod anchor beam through a pin shaft; through the arrangement of the structure, the traction cable anchor beams and the pull rod anchor beams are respectively hinged to the hinge holes of the second hinge support.
Preferably, the traction cable anchor beam and the pull rod anchor beam are provided with two groups of connecting ear blocks, and each group of connecting ear blocks is connected with the hinge hole of the second hinge seat through a pin shaft; by arranging the two groups of connecting lug blocks, the traction cable anchor beam and the pull rod anchor beam can be firmly hinged on the hinge holes of the second hinge support, and the stress is more uniform.
Preferably, a guide wire frame is arranged at the end part of the stabilizer bar, and the guide wire frame is positioned at the anchor beam side of the traction cable; the traction cable steel stranded wire on the traction cable anchor beam can not be abutted against the compression bar main body in the compression bar vertical rotation process by arranging the lead frame, so that friction loss between the traction cable steel stranded wire and the compression bar can be prevented.
Drawings
Fig. 1 is a schematic diagram of a front view of a compression bar according to the present utility model.
Fig. 2 is a schematic top view of the compression bar of the present utility model.
Fig. 3 is a schematic view of a second pivoting bracket according to the present utility model.
Fig. 4 is a schematic view of a first hinge support structure according to the present utility model.
The reference numerals in the drawings are respectively: 100. a compression bar main body; 101. a first swivel mount; 102. a second swivel mount; 103. a traction cable anchor beam; 104. a pull rod anchor beam; 105. reinforcing ribs; 106. connecting the ear blocks; 107. a lead frame; 1001. a stabilizer bar; 1002. a main compression bar; 1003. a web member; 1021. and a hinge hole.
Detailed Description
The utility model will be described in detail below with reference to the attached drawings: as shown in fig. 1 to 4, the utility model comprises a compression bar main body 100, one end of the compression bar main body 100 is provided with a first pivot seat 101, the first pivot seat 101 is hinged and fixed on an ear plate seat on a steel tower through a pin shaft, the other end of the compression bar main body 100 is provided with a second pivot seat 102, the second pivot seat 102 is respectively connected with a traction cable anchor beam 103 and a traction bar anchor beam 104 through a pin shaft, the traction cable anchor beam 103 is fixedly connected with a traction cable steel strand, and the traction bar anchor beam 104 is fixedly connected with the traction bar steel strand.
The compression bar main body 100 comprises a stabilizer bar 1001 and two main compression bars 1002, the stabilizer bar 1001 is located at a center position of one side of the two main compression bars 1002, and the two main compression bars 1002 and the one stabilizer bar 1001 are fixedly connected through a plurality of web members 1003 to form a triangular lattice truss. The stabilizer 1001 has a guide wire holder 107 at its end, and the guide wire holder 107 is located on the traction rope anchor beam 103 side.
The first swivel mount 101 is provided with two and is fixed on the bottom of two main compression bars 1002 respectively, installs the stiffening rib 105 between first swivel mount 101 and the main compression bar 1002, and stiffening rib 105 is around the circumference wall that distributes on main compression bar 1002.
The second swivel-hinge support 102 is provided with two and is respectively fixed on the top of the two main compression bars 1002, the reinforcing ribs 105 are arranged between the second swivel-hinge support 102 and the main compression bars 1002, and the reinforcing ribs 105 are distributed on the circumferential wall of the main compression bars 1002 in a surrounding manner. The second pivot support 102 is provided with two hinge holes 1021, wherein one hinge hole 1021 is connected with the traction cable anchor beam 103 through a pin shaft, and the other hinge hole 1021 is connected with the pull rod anchor beam 104 through a pin shaft. The traction cable anchor beam 103 and the pull rod anchor beam 104 are respectively provided with two groups of connecting lug blocks 106, and each group of connecting lug blocks 106 is connected with the hinge hole 1021 of the second hinge support 102 through a pin shaft.
The construction flow of the compression bar is as follows: sectional assembling the compression bar, connecting the steel strand of the pull rod and the steel strand of the traction cable, dismantling the compression bar assembling bracket from the compression bar to the initial state, dismantling the steel strand from the steel tower column in place, and lowering the compression bar and sectional dismantling.
Sectional assembly compression bar: firstly, after the lower steel truss is hoisted in place, a pin shaft is used for connecting a first hinge seat 101 at the bottom of a compression bar with a hinge of an ear plate seat on a steel tower, and smooth hinge rotation is ensured; then hoisting the middle steel truss, installing in place, and welding and fixing the middle steel truss with the lower steel truss after measurement and positioning; and finally, hoisting the upper steel truss, welding the upper steel truss with the middle steel truss after measuring and positioning, and hoisting the traction cable anchor beam 103 and the pull rod anchor beam 104, wherein the traction cable anchor beam 103 and the pull rod anchor beam 104 are connected with a second hinge seat 102 at the top of the compression bar through a pin shaft. The lower, middle and upper steel trusses are composed of a stabilizer bar 1001 and a main compression bar 1002, and the compression bar is assembled by sections because the assembly is long and is generally 30 m.
Connecting a pull rod steel strand and a traction cable steel strand: one end of the pull rod steel strand is connected with a pull rod anchor beam on the steel tower column, and the other end is connected with a pull rod anchor beam 104 at the top of the compression bar. One end of the traction cable steel strand is connected with the traction cable anchor beam 103 at the top of the compression bar, and the other end of the traction cable steel strand is connected with the traction cable anchor beam on the steel box girder.
The present utility model is not limited to the above embodiments, and any modification of the structural design provided by the present utility model, regardless of any changes in shape or material composition, should be considered as being within the scope of the present utility model.
Claims (7)
1. A depression bar that is used for steel case roof beam cable-stay bridge single column internal inclination steel tower to lay down to piece together to pull up and erects and change, includes depression bar main part (100), its characterized in that: one end of the compression bar main body (100) is provided with a first hinge seat (101), the first hinge seat (101) is hinged and fixed on an ear plate seat on a steel tower through a pin shaft, the other end of the compression bar main body (100) is provided with a second hinge seat (102), the second hinge seat (102) is respectively connected with a traction cable anchor beam (103) and a pull rod anchor beam (104) through a pin shaft, the traction cable anchor beam (103) is fixedly connected with a traction cable steel strand, and the pull rod anchor beam (104) is fixedly connected with the pull rod steel strand.
2. The compression bar for single column internal tilting steel tower horizontal split pulling up vertical rotation of steel box girder cable-stayed bridge according to claim 1, wherein: the compression bar main body (100) comprises a stabilizer bar (1001) and two main compression bars (1002), the stabilizer bar (1001) is located at one side center position of the two main compression bars (1002), and the two main compression bars (1002) are fixedly connected with the stabilizer bar (1001) through a plurality of web members (1003) to form a triangular lattice truss.
3. The compression bar for single column internal tilting steel tower horizontal split pulling up vertical rotation of steel box girder cable-stayed bridge according to claim 2, wherein: the first hinge support (101) is provided with two and is respectively fixed on the bottoms of the two main compression bars (1002), the reinforcing ribs (105) are arranged between the first hinge support (101) and the main compression bars (1002), and the reinforcing ribs (105) are distributed on the circumferential wall of the main compression bars (1002) in a surrounding mode.
4. The compression bar for single column internal tilting steel tower horizontal split pulling up vertical rotation of steel box girder cable-stayed bridge according to claim 2, wherein: the second hinge support (102) is provided with two and is respectively fixed on the top of the two main compression bars (1002), the reinforcing ribs (105) are arranged between the second hinge support (102) and the main compression bars (1002), and the reinforcing ribs (105) are distributed on the circumferential wall of the main compression bars (1002) in a surrounding mode.
5. The compression bar for single column internal tilting steel tower horizontal split lifting vertical rotation of steel box girder cable-stayed bridge according to claim 1 or 4, wherein: two hinge holes (1021) are formed in the second hinge support (102), one hinge hole (1021) is connected with the traction cable anchor beam (103) through a pin shaft, and the other hinge hole (1021) is connected with the pull rod anchor beam (104) through a pin shaft.
6. The compression bar for single column internal tilting steel tower horizontal split pulling up vertical rotation of steel box girder cable-stayed bridge according to claim 5, wherein: the traction cable anchor beam (103) and the pull rod anchor beam (104) are respectively provided with two groups of connecting lug blocks (106), and each group of connecting lug blocks (106) are connected with the hinge holes (1021) of the second hinge support (102) through pin shafts.
7. The compression bar for single column internal tilting steel tower horizontal split pulling up vertical rotation of steel box girder cable-stayed bridge according to claim 2, wherein: the end of the stabilizer bar (1001) is provided with a guide wire frame (107), and the guide wire frame (107) is positioned at the side of the traction rope anchor beam (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320678444.5U CN219653525U (en) | 2023-03-31 | 2023-03-31 | Compression bar for horizontal splicing, pulling up and vertical rotation of single-column internal tilting steel tower of steel box girder cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320678444.5U CN219653525U (en) | 2023-03-31 | 2023-03-31 | Compression bar for horizontal splicing, pulling up and vertical rotation of single-column internal tilting steel tower of steel box girder cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219653525U true CN219653525U (en) | 2023-09-08 |
Family
ID=87857223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320678444.5U Active CN219653525U (en) | 2023-03-31 | 2023-03-31 | Compression bar for horizontal splicing, pulling up and vertical rotation of single-column internal tilting steel tower of steel box girder cable-stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219653525U (en) |
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2023
- 2023-03-31 CN CN202320678444.5U patent/CN219653525U/en active Active
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