CN214194152U - Assembled bracket supporting structure of upper beam construction template of cable-stayed bridge cable tower - Google Patents
Assembled bracket supporting structure of upper beam construction template of cable-stayed bridge cable tower Download PDFInfo
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- CN214194152U CN214194152U CN202022804404.XU CN202022804404U CN214194152U CN 214194152 U CN214194152 U CN 214194152U CN 202022804404 U CN202022804404 U CN 202022804404U CN 214194152 U CN214194152 U CN 214194152U
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Abstract
The utility model provides a cable-stay bridge cable-stayed tower entablature template assembled bracket bearing structure, characterized by: the method comprises the following steps that a first metal mesh sheet and a second metal mesh sheet are arranged at the bottoms of a first preformed hole and a second preformed hole on a first cable-stayed bridge cable tower column and a second cable-stayed bridge cable tower column which have the same structure and correspond to tower columns, and a first shear key and a second shear key are respectively arranged in the preformed holes; the first finish-rolled deformed steel bar, the second finish-rolled deformed steel bar and the nuts, wherein a first shear key and a second shear key are respectively arranged on a first cable-stayed bridge cable tower column and a second cable-stayed bridge cable tower column; the first lower cross beam and the second lower cross beam are respectively arranged on the first shear key and the second shear key; the two ends of the first, second and third groups of bracket sheets are respectively arranged on the first lower cross beam and the second lower cross beam; the first unloading block and the second unloading block are respectively arranged on the truss device; the upper cross beams are respectively arranged on the top surfaces of the truss devices, the bent frames are arranged on the upper cross beams through connecting systems, and the bottom templates are arranged on the top surfaces of the bent frames.
Description
Technical Field
The invention relates to a supporting structure of an upper cross beam of a cable-stayed bridge cable tower, in particular to an assembled bracket supporting structure of a construction template of the upper cross beam of the cable-stayed bridge cable tower.
Background
The upper beam of the cable-stayed bridge tower is large in ground height, at present, an upper beam cast-in-place support commonly used in construction is assembled by adopting field welding, the installation is difficult, the quality is difficult to control, the safety risk is high, the support is difficult to have a circulation, the reuse rate is low, and the construction cost of enterprises is increased.
Disclosure of Invention
The invention aims to provide a construction template assembly type bracket supporting structure for an upper cross beam of a cable-stayed bridge cable tower, aiming at the defects in the construction of a cast-in-situ support of the upper cross beam of the cable-stayed bridge cable tower; the assembled bracket supporting structure of the construction template of the upper cross beam of the cable-stayed bridge cable tower is an assembled supporting structure which is easy to install and disassemble and can be repeatedly used, solves the problems of bracket installation and disassembly during the construction of the upper cross beam of the cable tower, avoids the uncontrollable property of high-altitude welding quality, greatly improves the construction quality and the construction efficiency, and reduces the risk in the construction process; meanwhile, the supporting structure can be used in a turnover mode, the utilization rate of materials is improved, the construction cost is reduced, and the economic benefit of enterprises is improved.
The technical scheme adopted by the invention for solving the technical problem is as follows: a construction template assembly type bracket supporting structure for an upper cross beam of a cable-stayed bridge cable tower mainly comprises a shear key, a cross beam, finish-rolled deformed steel bars, a truss device, a bracket piece, a bracket connecting system, a discharging block, a bent frame, a template and a cable-stayed bridge cable tower column.
The upper beam construction template assembly type bracket supporting structure of the cable-stayed bridge cable tower is characterized in that the bottoms of a first preformed hole and a second preformed hole on corresponding tower columns of a first cable-stayed bridge cable tower column 10-1 and a second cable-stayed bridge cable tower column 10-2 which have the same structure are provided; the first metal mesh sheet a and the second metal mesh sheet b, the first shear key 1-1 and the second shear key 1-2 are respectively installed and fixed in the reserved hole; a first finish-rolled deformed steel bar 2-1 and a second finish-rolled deformed steel bar 2-2 are respectively inserted into mounting holes of the first finish-rolled deformed steel bar 2-1 and the second finish-rolled deformed steel bar 2-2 on a first shear key 1-1, a second shear key 1-2, a first cable-stayed bridge cable tower column 10-1 and a second cable-stayed bridge cable tower column 10-2, nuts C are respectively arranged at two ends of the first finish-rolled deformed steel bar 2-1 and the second finish-rolled deformed steel bar 2-2, and the first shear key 1-1 and the second shear key 1-2 are respectively fixedly arranged on the first cable-stayed bridge cable tower column 10-1 and the second cable-stayed bridge cable tower column 10-2; the first lower cross beam 3-1 and the second lower cross beam 3-2 are respectively arranged on the first shear key 1-1 and the second shear key 1-2;
the two ends of the first group of bracket pieces 4-1, the second group of bracket pieces 4-2 and the third group of bracket pieces 4-3 are respectively installed and fixed on the first lower cross beam 3-1 and the second lower cross beam 3-2 and are connected into a whole through a flange plate, a bolt, a nut and a bracket connecting system 5 to form a stable truss device 4; the first unloading block 6-1 and the second unloading block 6-2 are fixedly arranged on the truss device 4; four upper crossbeams 7 with the same structure are respectively arranged on the top surface of the truss device 4, bent frames 8 with the same structure are respectively arranged on the upper crossbeams 7 and are connected and fixed by adopting a connecting system, and a bottom template 9 is arranged and fixed on the top surfaces of the bent frames 8.
The lower cross beam, the first lower cross beam 3-1 and the second lower cross beam 3-2 are respectively composed of three-spliced I-shaped steel, the first lower cross beam 3-1 and the second lower cross beam 3-2 are respectively arranged on the first shear key and the first shear key to form an integral supporting structure, and the truss device 4 is arranged above the first lower cross beam 3-1 and the second lower cross beam 3-2.
The upper cross beam and the upper cross beam 7 are made of three-spliced I-shaped steel, are arranged above the bracket structure and are used for transmitting the stress of the upper bent frame structure to the truss device 4 and further transmitting the stress to the cable tower, and a reinforcing steel plate is arranged at the fulcrum position of the upper cross beam 7.
And the first unloading block 6-1 is a five-spliced I-shaped steel body, is arranged between the bracket structure and the upper cross beam and is used for unloading the support when the supporting structure of the upper cross beam 7 is dismantled.
The bent frame is welded by I-shaped steel to form a bent frame 8, the bent frame 8 is installed on the upper cross beam 7, the distance between the bent frame and the bent frame is adjusted according to the structural size of the upper cross beam 7, all the bent frames are connected into a whole through channel steel connection systems, the bottom template 9 is installed and fixed on the top surface of the bent frame 8, and the protective railings are installed and fixed on beams at two ends of the upper cross beam 7.
The bracket is composed of bracket sheets and a connecting system, and the bracket is of a truss structure; two bracket sheets are arranged into a group, and are connected into two ends of a first group of bracket sheets 4-1, a second group of bracket sheets 4-2 and a third group of bracket sheets 4-3 through a bracket connecting system 5, and the two ends are respectively arranged and fixed on a first lower cross beam 3-1 and a second lower cross beam 3-2.
The bracket connecting system 5 is mainly a double-spliced channel steel, and is connected with the bracket sheet group through a flange plate.
The invention has the beneficial effects that: an assembled bracket supporting structure for construction of an upper cross beam of a cable-stayed bridge cable tower is characterized in that all unit elements of the structure are transported to a construction site after being processed in a steel structure processing factory, and are fixedly connected through a pin shaft, a flange plate and finish-rolled deformed steel bars without welding, so that the assembly and disassembly are convenient, the uncontrollable property of high-altitude welding quality is avoided, the construction quality and the construction efficiency are greatly improved, and the risk in the construction process is reduced; meanwhile, the supporting structure can be repeatedly used, the utilization rate of materials is improved, the construction time is saved, and the economic benefit of enterprises is improved.
Drawings
The invention is described in further detail below with reference to the figures and examples;
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the structure of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 1;
in FIGS. 1 to 3: 1-1, a first shear key, 1-2, a second shear key, 2-1, a first finish-rolled deformed steel bar, 2-2, a second finish-rolled deformed steel bar, 3-1, a first lower cross beam, 3-2, a second lower cross beam, 4, a truss device, 4-1, a first group of bracket sheets, 4-2, a second group of bracket sheets, 4-3, a third group of bracket sheets, 5, a bracket connecting system, 6-1, a first unloading block, 6-2, a second unloading block, 7, an upper cross beam, 8, a bent frame, 9, a bottom template, 10-1, a first cable-stayed bridge tower column, 10-2, a second cable-stayed bridge tower column, 11, a cable tower upper cross beam, a first metal mesh, b, a second metal mesh and c, nuts.
Detailed Description
In the embodiment of fig. 1 to 3 provided by the invention, an assembled bracket supporting structure for constructing an upper beam of a cable-stayed bridge cable tower is processed into a shear key, a truss device, a bracket sheet, a bracket connecting system, a discharging block, a bent frame, a beam and a bottom template in a steel structure processing factory before constructing an upper beam 11 of the cable tower.
The method comprises the steps that a first preformed hole and a second preformed hole are respectively formed in tower columns corresponding to a first cable-stayed bridge tower column 10-1 and a second cable-stayed bridge tower column 10-2 which are identical in structure, a first metal mesh sheet a and a second metal mesh sheet b are additionally arranged at the bottoms of the first preformed hole and the second preformed hole respectively, and a first finish-rolled deformed steel bar 2-1 and a second finish-rolled deformed steel bar 2-2 mounting hole are respectively formed above the first preformed hole and the second preformed hole.
In the embodiment, after the concrete strength of a first cable-stayed bridge cable tower column 10-1 and a second cable-stayed bridge cable tower column 10-2 reaches the standard, a template is removed, the bottom in the reserved hole is leveled by adopting mortar, and a first shear key 1-1 and a second shear key 1-2 are respectively installed and fixed in the reserved hole; the first finish-rolled deformed steel bar 2-1 and the second finish-rolled deformed steel bar 2-2 are respectively inserted into mounting holes of the first shear key 1-1, the second shear key 1-2, the first finish-rolled deformed steel bar 2-1 and the second finish-rolled deformed steel bar 2-2 on the first tower column 10-1 and the second tower column 10-2, nuts C are respectively arranged at two ends of the first finish-rolled deformed steel bar 2-1 and the second finish-rolled deformed steel bar 2-2, and the first shear key 1-1 and the second shear key 1-2 are respectively fixedly arranged on a first cable-stayed bridge tower column 10-1 and a second cable-stayed bridge tower column 10-2.
And the first lower cross beam 3-1 and the second lower cross beam 3-2 are respectively arranged on the first shear key 1-1 and the second shear key 1-2.
In the embodiment, two bracket pieces with the same structure are assembled into a first group of bracket pieces 4-1, a second group of bracket pieces 4-2 and a third group of bracket pieces 4-3; after the two ends of the first group of bracket pieces 4-1 are respectively arranged between the first lower beam 3-1 and the second lower beam 3-2 and temporarily fixed, the second group of bracket pieces 4-2 and the third group of bracket pieces 4-3 are hung on the first lower beam 3-1 and the second lower beam 3-2 in front of and behind the first group of bracket pieces 4-1; the second group of bracket pieces 4-2 and the first group of bracket pieces 4-1 are connected into a whole through a flange plate, a bolt, a nut and a bracket connecting system 5, and the third group of bracket pieces 4-3 and the first group of bracket pieces 4-1 are connected into a whole to form a stable truss device 4.
In the embodiment, after the truss device 4 is installed, the first falling block 6-1 and the second falling block 6-2 are respectively installed and fixed on the truss device 4; four upper cross beams 7 with the same structure are respectively installed and fixed on the top surface of the truss device 4, bent frames 8 with the same structure are respectively installed on the top surface of the upper cross beams 7 and are connected and fixed by adopting a connecting system; the bottom template 9 is fixedly arranged on the top surface of the bent frame 8, and the protective railings are fixedly arranged on the beams at the two ends of the upper beam 7, so that the assembly of the construction template of the upper beam of the cable-stayed bridge tower is completed.
Principle of construction
And after the installation and prepressing of the supporting structure are finished, constructing the cable tower upper crossbeam 11, and after the concrete of the cable tower upper crossbeam 11 reaches the standard and the tensioning of the prestressed tendons is finished, dismantling the supporting structure. Firstly, the first and second dumping blocks 6-1 and 6-2 are dismantled to enable the upper crossbeam 7, the bent frame 8 and the bottom template 9 to fall integrally, the bottom template 9, the bent frame 8, the upper crossbeam 7, the first dumping block 6-1 and the second dumping block 6-2 are hoisted and dismantled in sequence, then the first group of bracket sheets 4-1, the third group of bracket sheets 4-3 and the bracket connecting system 5 of the bracket are dismantled, the middle group of second group of bracket sheets 4-2 is dismantled by adopting a bidirectional rotary dismantling and assembling process, after the bracket is dismantled, the first lower cross beam 3-1 and the second lower cross beam 3-2, the first shear key 1-1 and the second shear key 1-2 are dismantled one by one, and binding the steel bars with the reserved holes and pouring concrete to complete the construction of the upper beam 11 of the cable tower, and transferring all the disassembled supporting structural parts to the next construction point for reutilization.
Claims (2)
1. A construction template assembly type bracket supporting structure for an upper cross beam of a cable-stayed bridge cable tower mainly comprises a shear key, a cross beam, finish-rolled deformed steel bars, a truss device, a bracket piece, a bracket connecting system, a discharging block, a bent frame, a template and a cable-stayed bridge cable tower column; the method is characterized in that: a first metal mesh (a) and a second metal mesh (b) are respectively arranged at the bottoms of a first preformed hole and a second preformed hole on a first cable-stayed bridge cable tower column (10-1) and a second cable-stayed bridge cable tower column (10-2) which have the same structure and correspond to the tower columns, and a first shear key (1-1) and a second shear key (1-2) are respectively installed and fixed in the preformed holes; a first finish-rolled deformed steel bar (2-1) and a second finish-rolled deformed steel bar (2-2) are respectively inserted into the mounting holes of the first finish-rolled deformed steel bar (2-1) and the second finish-rolled deformed steel bar (2-2) on the first shear key (1-1), the second shear key (1-2), the tower column (10-1) of a first cable-stayed bridge tower and the tower column (10-2) of a second cable-stayed bridge tower, and nuts (C) are respectively arranged at two ends of the first finish-rolled deformed steel bar (2-1) and the second finish-rolled deformed steel bar (2-2); the first shear key (1-1) and the second shear key (1-2) are respectively installed and fixed on a first cable-stayed bridge cable tower column (10-1) and a second cable-stayed bridge cable tower column (10-2); the first lower cross beam (3-1) and the second lower cross beam (3-2) are respectively arranged on the first shear key (1-1) and the second shear key (1-2); two ends of the first group of bracket sheets (4-1), the second group of bracket sheets (4-2) and the third group of bracket sheets (4-3) are respectively installed and fixed on the first lower cross beam (3-1) and the second lower cross beam (3-2) and are connected into a whole through a flange plate, a bolt, a nut and a bracket connecting system (5) to form a stable truss device (4); the first unloading block (6-1) and the second unloading block (6-2) are respectively installed and fixed on the truss device; four upper beams (7) with the same structure are respectively arranged on the top surface of the truss device (4), bent frames (8) with the same structure are respectively arranged on the upper beams and are connected and fixed by adopting a connecting system, and a bottom template (9) is fixedly arranged on the top surfaces of the bent frames.
2. The upper beam construction formwork fabricated bracket supporting structure of a cable-stayed bridge cable tower as claimed in claim 1, wherein: the first lower cross beam (3-1) and the second lower cross beam (3-2) are respectively formed by splicing I-shaped steel, the first lower cross beam (3-1) and the second lower cross beam (3-2) are respectively arranged on the first shear key and the second shear key to form an integral supporting structure, and a truss device (4) is arranged above the first lower cross beam (3-1) and the second lower cross beam (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022804404.XU CN214194152U (en) | 2020-11-29 | 2020-11-29 | Assembled bracket supporting structure of upper beam construction template of cable-stayed bridge cable tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022804404.XU CN214194152U (en) | 2020-11-29 | 2020-11-29 | Assembled bracket supporting structure of upper beam construction template of cable-stayed bridge cable tower |
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| CN214194152U true CN214194152U (en) | 2021-09-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914223A (en) * | 2021-10-15 | 2022-01-11 | 中建桥梁有限公司 | High-pier arc-shaped upper cross beam light-weight bracket system and mounting method thereof |
| CN114086473A (en) * | 2021-11-10 | 2022-02-25 | 中铁四局集团第五工程有限公司 | High pier cast-in-place beam support and construction method thereof |
| CN114922072A (en) * | 2022-05-16 | 2022-08-19 | 中铁十一局集团有限公司 | Thin-wall tower limb large-span cross beam support and mounting method thereof |
-
2020
- 2020-11-29 CN CN202022804404.XU patent/CN214194152U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914223A (en) * | 2021-10-15 | 2022-01-11 | 中建桥梁有限公司 | High-pier arc-shaped upper cross beam light-weight bracket system and mounting method thereof |
| CN114086473A (en) * | 2021-11-10 | 2022-02-25 | 中铁四局集团第五工程有限公司 | High pier cast-in-place beam support and construction method thereof |
| CN114922072A (en) * | 2022-05-16 | 2022-08-19 | 中铁十一局集团有限公司 | Thin-wall tower limb large-span cross beam support and mounting method thereof |
| CN114922072B (en) * | 2022-05-16 | 2024-05-14 | 中铁十一局集团有限公司 | Thin-wall tower limb long-span beam bracket and mounting method thereof |
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