CN108316150B - Construction system and construction method for main tower and steel anchor beam of cable-stayed bridge - Google Patents
Construction system and construction method for main tower and steel anchor beam of cable-stayed bridge Download PDFInfo
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- CN108316150B CN108316150B CN201810073072.7A CN201810073072A CN108316150B CN 108316150 B CN108316150 B CN 108316150B CN 201810073072 A CN201810073072 A CN 201810073072A CN 108316150 B CN108316150 B CN 108316150B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 299
- 239000010959 steel Substances 0.000 title claims abstract description 299
- 238000010276 construction Methods 0.000 title claims abstract description 85
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009415 formwork Methods 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction system and a construction method of a main tower and a steel anchor beam of a cable-stayed bridge, wherein the construction method comprises the following steps: step 1, installing a pre-buried steel plate; the embedded steel plate is arranged on the top surface of the beam bracket; step 2, arranging a tower column steel inner template between the top surface of the lower joist and the bottom surface of the upper joist; step 3, the lower part of the steel anchor beam temporary support is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the steel anchor beam corresponding to the lower joist is arranged on the steel anchor beam temporary support before the main tower section concrete is poured; step 4, welding and connecting the steel anchor beam corresponding to the lower joist with the embedded steel plate to finish positioning; and then installing a steel anchor beam corresponding to the upper joist, and welding and connecting the steel anchor beam with a corresponding embedded steel plate. The construction method fuses the steel anchor beam installation construction into the tower column structure construction, reduces the number of the sectional construction times of the tower column, is beneficial to controlling the internal quality and the appearance quality of the tower column structure, shortens the construction period and reduces the material waste.
Description
Technical Field
The invention belongs to the technical field of cable-stayed bridge construction, and particularly relates to a construction system and a construction method of a main tower and a steel anchor beam of a cable-stayed bridge.
Background
The cable-stayed bridge is a combined system bridge with a tower under pressure, a guy cable under tension and a beam body under bending. The system can effectively reduce the height of the building structure, lighten the weight and save the materials. Modern cable-stayed bridges play an important role in modern bridge structures by virtue of good structural performance, large crossing capacity, reasonable economic indexes and graceful building shapes, and the cable-stayed bridges are rapidly developed due to the progress of modern structure theory, high-strength materials, computer technology and construction methods.
The main tower of the cable-stayed bridge is an anchoring end of a stay cable, and a steel anchor beam is arranged in the main tower to ensure the rigidity of a tensioning part. Compared with the method of using steel strands or adding steel bars to increase the structural rigidity, the method has the characteristics of simple construction method, shortened construction period and the like. According to the construction requirements of the tower column sections, the inner space of the tower column, the steel anchor beam structure and the process characteristics, the concrete of each section of the main tower anchoring section is poured once, and the concrete structure of the tower column is required to be formed once after being erected along with the formwork, so that the requirements of steel bar binding, steel plate installation, formwork erection, temporary positioning of the steel anchor beam and installation after concrete pouring are met.
In the installation construction of the steel anchor beams in the tower column, the tower column sections are determined according to the installation positions of the steel anchor beams, if each steel anchor beam is provided with a tower column section, the tower column sections are more, so that the turnover times of main rib joints and prestressed steel strand joints of the tower column and inner and outer templates of the tower column are increased, and the internal quality and the appearance quality of the tower column structure are affected to a certain extent. Meanwhile, if every two steel anchor beams correspond to one tower column section, the construction space between every two joists is too narrow, and the lower steel anchor beams cannot be installed after concrete pouring is completed.
Disclosure of Invention
The invention aims to provide a construction system and a construction method for a main tower and a steel anchor beam of a cable-stayed bridge, which are used for solving the problem that the construction space between joists is too narrow and the steel anchor beam at the lower part cannot be installed after concrete pouring is completed.
The technical scheme for solving the technical problems is as follows: the construction system for the main tower and the steel anchor beam of the cable-stayed bridge is characterized in that the main tower of the cable-stayed bridge comprises a first tower body and a second tower body, and a cable guide pipe and a reinforced concrete beam support which are corresponding to each other in position are arranged on the first tower body and the second tower body at intervals; the main tower of the cable-stayed bridge comprises more than two main tower sections; the main tower section is provided with an upper beam support and a lower beam support which are arranged at intervals up and down; the steel anchor beams are arranged on the first tower body and the second tower body; the construction system includes: pre-buried steel plates, tower column steel inner templates and steel anchor beam temporary supports; the embedded steel plate is arranged on the top surface of the beam support and is welded with the beam support steel bars through shear nails; the tower column steel inner template is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and is welded and fixed with a main rib of a main tower section by adopting a connecting steel bar; the lower part of the steel anchor beam temporary support is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the top surface of the steel anchor beam temporary support is flush with an embedded steel plate arranged on the top surface of the lower joist; and before concrete pouring, mounting the steel anchor beam corresponding to the lower joist on the steel anchor beam temporary bracket, and welding and connecting the steel anchor beam and the embedded steel plate to complete in-place after the main tower sectional concrete is poured.
The cable-stayed bridge main tower and the construction system of the steel anchor beams, provided by the invention, further comprise a first main tower section, a second main tower section, a third main tower section and a fourth main tower section from bottom to top, and the steel anchor beams comprise a first steel anchor beam, a second steel anchor beam, a third steel anchor beam, a fourth steel anchor beam, a fifth steel anchor beam, a sixth steel anchor beam, a seventh steel anchor beam and an eighth steel anchor beam from bottom to top.
The technical scheme for solving the technical problems is as follows: a construction method of a main tower and a steel anchor beam of a cable-stayed bridge comprises the following steps: step 1, installing a pre-buried steel plate; the embedded steel plate is arranged on the top surface of the beam support, and is welded with the beam support steel bar through shear nails after the construction of the beam support steel bar is completed and checked; step 2, supporting a tower column steel inner template; the tower column steel inner template is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and is welded and fixed with the main rib of the main tower section by adopting connecting steel bars; step 3, the lower part of the steel anchor beam temporary support is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the steel anchor beam corresponding to the lower joist is arranged on the steel anchor beam temporary support before the main tower section concrete is poured; step 4, pouring concrete after the construction of other steel bars and templates of the main tower section is completed; the steel anchor beam corresponding to the lower joist and the embedded steel plate are welded and connected to finish positioning; then installing a steel anchor beam corresponding to the upper joist, and welding and connecting the steel anchor beam with a corresponding embedded steel plate; and (3) repeating the steps 1 to 4 to finish the construction of the main tower and the steel anchor beam of the cable-stayed bridge.
According to the construction method of the main tower and the steel anchor beam of the cable-stayed bridge, the main tower of the cable-stayed bridge comprises the first tower body and the second tower body, and the cable guide pipe and the reinforced concrete beam support which are corresponding in position are arranged on the first tower body and the second tower body at intervals; the main tower of the cable-stayed bridge comprises more than two main tower sections; the main tower section is provided with an upper beam support and a lower beam support which are arranged at intervals up and down; the steel anchor beam is arranged on the first tower body and the second tower body.
The step 2 specifically comprises the steps of positioning and fixing a tower column cable guide pipe, constructing a main tower section steel bar to a lower beam support position, and constructing a tower column steel inner template after acceptance inspection.
According to the construction method of the main tower and the steel anchor beam of the cable-stayed bridge, the step 4 specifically comprises the steps that the inner die and the outer die of the templates of other parts of the sections of the main tower are both made of wood, and the inner die and the outer die are fixed by using split bolts.
According to the construction method of the main tower and the steel anchor beam of the cable-stayed bridge, the top surface of the temporary support of the steel anchor beam is preferably flush with the embedded steel plate arranged on the top surface of the lower joist when the construction of the step 3 is carried out.
According to the construction method of the main tower and the steel anchor beam of the cable-stayed bridge, the temporary support of the steel anchor beam preferably comprises the rectangular top frame welded by the channel steel, the vertical pipes vertically connected with the top angle positions of the top frame, and the reinforcing pipes welded between the adjacent vertical pipes.
According to the cable-stayed bridge main tower and the construction method of the steel anchor beams, the cable-stayed bridge main tower preferably comprises a first main tower section, a second main tower section, a third main tower section and a fourth main tower section from bottom to top, and the steel anchor beams comprise a first steel anchor beam, a second steel anchor beam, a third steel anchor beam, a fourth steel anchor beam, a fifth steel anchor beam, a sixth steel anchor beam, a seventh steel anchor beam and an eighth steel anchor beam from bottom to top.
According to the construction method of the main tower and the steel anchor beam of the cable-stayed bridge, the first steel anchor beam and the second steel anchor beam are preferably arranged on the first main tower section; a third steel anchor beam and a fourth steel anchor beam are arranged on the second main tower section; a fifth steel anchor beam and a sixth steel anchor beam are arranged on the third main tower section; and a seventh steel anchor beam and an eighth steel anchor beam are arranged on the fourth main tower section.
The beneficial effects of the invention are as follows:
according to the construction method disclosed by the invention, the steel anchor beam installation construction is fused into the tower column structure construction, so that the number of the sectional construction times of the tower column is reduced, the control of the internal quality and the appearance quality of the tower column structure is facilitated, the construction period is shortened, and the material waste is greatly reduced.
The steel anchor beam is additionally arranged in the main tower of the cable-stayed bridge, so that the construction period and materials are saved compared with the case of adding the reinforcing steel bars of the main tower or locally adding the transverse prestress. After the steel anchor beam is determined to be used, a steel anchor beam manufacturer can start to process the steel anchor beam and can be synchronously performed with the construction of the main tower structure. If locally added steel bars or prestress are used, because the main tower is dense in steel bars, no space is reserved for laying the added steel bars or prestress steel strands, great inconvenience is brought to construction, and the concrete cannot be vibrated compactly when pouring due to small gaps between the steel bars, the quality of the concrete is affected, and great hidden quality hazards are brought. In addition, when the prestress steel strand is added, the prestress tension and grouting can prolong the construction period of the whole main tower, and have great influence on the appearance quality of the main tower. The resulting labor and material costs increase. Compared with the prior art, the steel anchor beam is simple and convenient to construct, can be synchronously constructed with the main tower structure, and greatly shortens the construction period.
Drawings
The foregoing and/or other advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the invention, wherein:
FIG. 1 is a schematic flow diagram of a construction method of a main tower and a steel anchor beam of a cable-stayed bridge according to an embodiment;
FIG. 2 is a schematic illustration of a main tower section of a cable-stayed bridge according to an embodiment of the invention;
FIG. 3 is a schematic illustration of a second main tower section and steel anchor beam arrangement according to one embodiment of the present invention;
FIG. 4 is a schematic view of joist and pre-embedded steel plate connection according to an embodiment of the present invention;
FIG. 5 is a schematic front view of a temporary support for a steel anchor beam in accordance with one embodiment of the present invention;
fig. 6 is a schematic top view of a temporary steel anchor beam bracket according to one embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. the first tower body, 2, the second tower body, 3, a steel cable conduit, 4, a reinforced concrete beam support, 5, a steel anchor beam, 6, a pre-buried steel plate, 7, a shear pin, 8, a steel anchor beam temporary support, 9, a tower column steel inner formwork, 11, a first main tower section, 12, a second main tower section, 13, a third main tower section, 14, a fourth main tower section, 41, a lower beam support, 42, an upper beam support, 51, a first steel anchor beam, 52, a second steel anchor beam, 53, a third steel anchor beam, 54, a fourth steel anchor beam, 55, a fifth steel anchor beam, 56, a sixth steel anchor beam, 57, a seventh steel anchor beam, 58, an eighth steel anchor beam, 81, an overhead frame, 82, a vertical pipe, 83 and a reinforcing pipe.
Detailed Description
Hereinafter, embodiments of a construction system and a construction method of a main tower and a steel anchor beam of a cable-stayed bridge of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the invention to the embodiments and scope of the invention. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification of the present application, including those adopting any obvious substitutions and modifications to the embodiments described herein.
The drawings in the present specification are schematic views, which assist in explaining the concept of the present invention, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
Fig. 2 to 6 show a construction system of a main tower and a steel anchor beam of a cable-stayed bridge according to an embodiment of the present invention, wherein the main tower of the cable-stayed bridge comprises a first tower body 1 and a second tower body 2, and a cable guide pipe 3 and a reinforced concrete beam support 4 which are arranged on the first tower body and the second tower body at intervals and correspond to each other in position; the main tower of the cable-stayed bridge comprises more than two main tower sections; the main tower is provided with a lower beam support 41 and an upper beam support 42 which are arranged at intervals up and down in a sectional manner; the steel anchor beams 5 are arranged on the first tower body 1 and the second tower body 2;
the construction system comprises: a pre-buried steel plate 6, a tower column steel inner template 9 and a steel anchor beam temporary support 8;
as shown in fig. 4, the embedded steel plate 6 is arranged on the top surface of the beam bracket, and the embedded steel plate 6 is welded with the beam bracket steel bars through shear nails 7; in a specific embodiment, the length dimension of the embedded steel plate 6 is 20 mm-60 mm smaller than the length dimension of the top surface of the joist, and the width dimension of the embedded steel plate 6 is equal to the width dimension of the top surface of the joist; the length of the shear pin 7 is 150 mm-220 mm; for example, the shear nails are phi 22 round head welding nails, the length is 200mm, and the spacing is 200mm;
the tower column steel inner template 9 is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and is welded and fixed with a main rib of a main tower section by adopting a connecting steel bar; in a specific embodiment, the tower column steel inner template 9 is a steel plate subjected to corrosion prevention treatment, and the thickness of the steel plate is 10-20 mm; the height of the tower column steel inner template 9 is equal to the distance between the top surface of the lower joist and the bottom surface of the upper joist;
as shown in fig. 3, the lower part of the steel anchor beam temporary support 8 is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the top surface of the steel anchor beam temporary support 8 is flush with the embedded steel plate 6 arranged on the top surface of the lower joist; and before concrete pouring, installing the steel anchor beam corresponding to the lower joist on the steel anchor beam temporary bracket 8, and welding and connecting the steel anchor beam and the embedded steel plate in place after the main tower sectional concrete is poured.
As shown in fig. 2, the main tower of the cable-stayed bridge sequentially comprises a first main tower section 11, a second main tower section 12, a third main tower section 13 and a fourth main tower section 14 from bottom to top, and the steel anchor beams sequentially comprise a first steel anchor beam 51, a second steel anchor beam 52, a third steel anchor beam 53, a fourth steel anchor beam 54, a fifth steel anchor beam 55, a sixth steel anchor beam 56, a seventh steel anchor beam 57 and an eighth steel anchor beam 58 from bottom to top.
Fig. 1 shows a construction method of a main tower and a steel anchor beam of a cable-stayed bridge according to an embodiment of the invention, the construction method comprising the steps of:
step 1, installing an embedded steel plate 6; as shown in fig. 4, the pre-buried steel plate 6 is arranged on the top surface of the beam support, and after the construction and acceptance of the beam support steel bar are completed, the pre-buried steel plate 6 is welded with the beam support steel bar through the shear nails 7;
step 2, supporting a tower column steel inner template 9; as shown in fig. 3, the tower column steel inner formwork 9 is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and the tower column steel inner formwork 9 is welded and fixed with the main rib of the main tower section by adopting connecting steel bars; step 2 specifically comprises the steps of firstly positioning and fixing a tower column cable guide pipe, then constructing a main tower section steel bar to the position of a lower beam support 41, and constructing a tower column steel inner template 9 after acceptance inspection. Because the steel anchor beams corresponding to the lower joists are required to be installed before concrete pouring, the steel anchor beams after installation affect the construction of the inner formwork of the tower column, and the traditional wood pattern construction cannot be used in view of the inner formwork support and reinforcement;
step 3, the lower part of the steel anchor beam temporary support 8 is arranged on the existing building platform surface or the finished top plate of the steel anchor beam 5, and the steel anchor beam 5 corresponding to the lower joist is arranged on the steel anchor beam temporary support 8 before the main tower is subjected to segmental concrete pouring; as shown in fig. 5 and 6, the steel anchor beam temporary support 8 includes a rectangular top frame 81 welded with channel steel, risers 82 vertically connected to the top corner positions of the top frame 81, and reinforcing pipes 83 welded between adjacent risers 82. The adjacent steel anchor beams cannot be installed simultaneously under the influence of the joists at the upper part of the main tower section, and the adjacent steel anchor beams must be installed respectively before and after concrete pouring;
step 4, pouring concrete after the construction of other steel bars and templates of the main tower section is completed; the steel anchor beam 5 and the embedded steel plate 6 corresponding to the lower joist are welded and connected to complete positioning; then installing a steel anchor beam 5 corresponding to the upper joist, and welding and connecting the steel anchor beam with a corresponding embedded steel plate 6; step 4, specifically, the inner die and the outer die of the other part of the main tower section are both wood dies, and the inner die and the outer die are fixed by using split bolts.
And (5) repeating the steps 1 to 4 to finish the construction of the main tower of the cable-stayed bridge and the steel anchor beam 5.
According to the construction method disclosed by the invention, the steel anchor beam installation construction is fused into the tower column structure construction, so that the number of the sectional construction times of the tower column is reduced, the control of the internal quality and the appearance quality of the tower column structure is facilitated, the construction period is shortened, and the material waste is greatly reduced.
The steel anchor beam is additionally arranged in the main tower of the cable-stayed bridge, so that the construction period and materials are saved compared with the case of adding the reinforcing steel bars of the main tower or locally adding the transverse prestress. After the steel anchor beam is determined to be used, a steel anchor beam manufacturer can start to process the steel anchor beam and can be synchronously performed with the construction of the main tower structure. If locally added steel bars or prestress are used, because the main tower is dense in steel bars, no space is reserved for laying the added steel bars or prestress steel strands, great inconvenience is brought to construction, and the concrete cannot be vibrated compactly when pouring due to small gaps between the steel bars, the quality of the concrete is affected, and great hidden quality hazards are brought. In addition, when the prestress steel strand is added, the prestress tension and grouting can prolong the construction period of the whole main tower, and have great influence on the appearance quality of the main tower. The resulting labor and material costs increase. Compared with the prior art, the steel anchor beam is simple and convenient to construct, can be synchronously constructed with the main tower structure, and greatly shortens the construction period.
In a preferred construction method of the main tower of the cable-stayed bridge and the steel anchor beam, the top surface of the steel anchor beam temporary support 8 is flush with the embedded steel plate 6 arranged on the top surface of the lower joist when the construction of the step 3 is carried out. If the support top is slightly higher than the embedded steel plate, concrete enters between the steel anchor beam and the embedded steel plate when the main tower is concreted, and the steel anchor beam and the embedded steel plate are difficult to clean, so that larger deviation between the steel anchor beam elevation and the cable guide pipe elevation is caused.
The above disclosed features are not limited to the disclosed combinations with other features, and other combinations between features can be made by those skilled in the art according to the purpose of the invention to achieve the purpose of the invention.
Claims (10)
1. The construction system for the main tower and the steel anchor beam of the cable-stayed bridge is characterized in that the main tower of the cable-stayed bridge comprises a first tower body and a second tower body, and a cable guide pipe and a reinforced concrete beam support which are corresponding to each other in position are arranged on the first tower body and the second tower body at intervals; the main tower of the cable-stayed bridge comprises more than two main tower sections; the main tower section is provided with an upper beam support and a lower beam support which are arranged at intervals up and down; the steel anchor beams are arranged on the first tower body and the second tower body; the construction system includes: pre-buried steel plates, tower column steel inner templates and steel anchor beam temporary supports; the embedded steel plate is arranged on the top surface of the beam support and is welded with the beam support steel bars through shear nails; the tower column steel inner template is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and is welded and fixed with a main rib of a main tower section by adopting a connecting steel bar; the lower part of the steel anchor beam temporary support is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the top surface of the steel anchor beam temporary support is flush with an embedded steel plate arranged on the top surface of the lower joist; and before concrete pouring, mounting the steel anchor beam corresponding to the lower joist on the steel anchor beam temporary bracket, and welding and connecting the steel anchor beam and the embedded steel plate to complete in-place after the main tower sectional concrete is poured.
2. The construction system of the cable-stayed bridge main tower and the steel anchor beam according to claim 1, wherein the cable-stayed bridge main tower sequentially comprises a first main tower section, a second main tower section, a third main tower section and a fourth main tower section from bottom to top, and the steel anchor beam sequentially comprises a first steel anchor beam, a second steel anchor beam, a third steel anchor beam, a fourth steel anchor beam, a fifth steel anchor beam, a sixth steel anchor beam, a seventh steel anchor beam and an eighth steel anchor beam from bottom to top.
3. The construction method of the main tower and the steel anchor beam of the cable-stayed bridge is characterized by comprising the following steps: step 1, installing a pre-buried steel plate; the embedded steel plate is arranged on the top surface of the beam support, and is welded with the beam support steel bar through shear nails after the construction of the beam support steel bar is completed and checked; step 2, supporting a tower column steel inner template; the tower column steel inner template is arranged between the top surface of the lower joist and the bottom surface of the upper joist, and is welded and fixed with the main rib of the main tower section by adopting connecting steel bars; step 3, the lower part of the steel anchor beam temporary support is arranged on the existing building platform surface or the finished steel anchor beam top plate, and the steel anchor beam corresponding to the lower joist is arranged on the steel anchor beam temporary support before the main tower section concrete is poured; step 4, pouring concrete after the construction of other steel bars and templates of the main tower section is completed; the steel anchor beam corresponding to the lower joist and the embedded steel plate are welded and connected to finish positioning; then installing a steel anchor beam corresponding to the upper joist, and welding and connecting the steel anchor beam with a corresponding embedded steel plate; and (3) repeating the steps 1 to 4 to finish the construction of the main tower and the steel anchor beam of the cable-stayed bridge.
4. The construction method of the cable-stayed bridge main tower and the steel anchor beam according to claim 3, wherein the cable-stayed bridge main tower comprises a first tower body and a second tower body, and a cable guide pipe and a reinforced concrete beam support which are corresponding to each other in position are arranged on the first tower body and the second tower body at intervals; the main tower of the cable-stayed bridge comprises more than two main tower sections; the main tower section is provided with an upper beam support and a lower beam support which are arranged at intervals up and down; the steel anchor beam is arranged on the first tower body and the second tower body.
5. The method for constructing main towers and steel anchor beams of cable-stayed bridges according to claim 4, wherein the step 2 specifically comprises the steps of firstly positioning and fixing a tower column cable guide pipe, then constructing a main tower section steel bar to a lower beam support position, and constructing a tower column steel inner template after acceptance inspection.
6. The construction method of the cable-stayed bridge main tower and the steel anchor beam according to claim 5, wherein the step 4 specifically comprises the steps of adopting wood molds for the inner mold and the outer mold of other part templates of the main tower section, and fixing the inner mold and the outer mold by using split bolts.
7. A main tower of a cable-stayed bridge and a construction method of a steel anchor beam according to claim 3, wherein the top surface of the temporary support of the steel anchor beam is flush with the pre-buried steel plate installed on the top surface of the lower joist when the construction of step 3 is performed.
8. A method of constructing a main tower and a steel anchor beam for a cable-stayed bridge according to any one of claims 3 to 7, wherein the steel anchor beam temporary support comprises a rectangular roof frame welded by means of channel steel, risers vertically connected to the roof frame at the top angle, and reinforcing pipes welded between adjacent risers.
9. The construction method of the cable-stayed bridge main tower and the steel anchor beam according to claim 8, wherein the cable-stayed bridge main tower sequentially comprises a first main tower section, a second main tower section, a third main tower section and a fourth main tower section from bottom to top, and the steel anchor beam sequentially comprises a first steel anchor beam, a second steel anchor beam, a third steel anchor beam, a fourth steel anchor beam, a fifth steel anchor beam, a sixth steel anchor beam, a seventh steel anchor beam and an eighth steel anchor beam from bottom to top.
10. The construction method of the main tower and the steel anchor beam of the cable-stayed bridge according to claim 9, wherein the first steel anchor beam and the second steel anchor beam are installed on the first main tower section; a third steel anchor beam and a fourth steel anchor beam are arranged on the second main tower section; a fifth steel anchor beam and a sixth steel anchor beam are arranged on the third main tower section; and a seventh steel anchor beam and an eighth steel anchor beam are arranged on the fourth main tower section.
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| CN201810073072.7A CN108316150B (en) | 2018-01-25 | 2018-01-25 | Construction system and construction method for main tower and steel anchor beam of cable-stayed bridge |
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| CN201810073072.7A CN108316150B (en) | 2018-01-25 | 2018-01-25 | Construction system and construction method for main tower and steel anchor beam of cable-stayed bridge |
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| CN109629420A (en) * | 2019-01-08 | 2019-04-16 | 中铁大桥局集团有限公司 | A kind of king-tower transverse brace structure and its installation method |
| CN110184898B (en) * | 2019-06-14 | 2021-04-27 | 中铁大桥局集团有限公司 | Steel skeleton segment of main tower anchoring area of cable-stayed bridge and tower column construction method |
| CN111005302B (en) * | 2019-12-30 | 2021-07-30 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
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| KR100969005B1 (en) * | 2009-11-06 | 2010-07-09 | 동아대학교 산학협력단 | Constructing method of suspension bridge and temporary cable therefor |
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| JP2000080609A (en) * | 1998-09-08 | 2000-03-21 | Nakai Shoko Kk | Damping device for cable and protecting method of cable |
| JP2007192011A (en) * | 2005-12-21 | 2007-08-02 | Jfe Koken Corp | Cable anchoring structure of structural body and cable tension adjusting method in cable anchoring structure |
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| CN104480863A (en) * | 2014-12-12 | 2015-04-01 | 上海市基础工程集团有限公司 | Method for mounting and positioning steel anchor beams for constructing cable-stayed bridge main tower |
| CN105970819A (en) * | 2016-05-31 | 2016-09-28 | 中铁大桥局集团第五工程有限公司 | Installation construction method for steel anchor beams |
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| CN108316150A (en) | 2018-07-24 |
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