CN109295858B - Integral assembly jig frame for steel shell sections of double-wall combined bridge tower and working method thereof - Google Patents
Integral assembly jig frame for steel shell sections of double-wall combined bridge tower and working method thereof Download PDFInfo
- Publication number
- CN109295858B CN109295858B CN201811190761.2A CN201811190761A CN109295858B CN 109295858 B CN109295858 B CN 109295858B CN 201811190761 A CN201811190761 A CN 201811190761A CN 109295858 B CN109295858 B CN 109295858B
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- steel shell
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- vertical
- wall plate
- jig frame
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 6
- 238000000429 assembly Methods 0.000 claims 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009194 climbing Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an integral assembly jig frame of a steel shell section of a double-wall combined bridge tower and a working method thereof, wherein the integral assembly jig frame comprises a base matched with the section shape of the steel shell section, a plurality of first vertical enclosing components which are arranged around the base and are distributed at intervals and used for enclosing the outer wall plate of the steel shell section, and a plurality of second vertical enclosing components which are arranged inside the base and are used for enclosing the inner wall plate of the steel shell section; an adjustable first horizontal support piece is arranged on the first vertical enclosure assembly; an adjustable second horizontal support piece is arranged on the second vertical enclosure assembly. According to the invention, the position of the enclosure assembly can be adjusted according to the section size and structure of the steel shell section, so that the vertical assembly requirements of different steel shell sections are met, the efficient, accurate and safe positioning wallboard unit is realized, and the integral manufacturing precision of the steel shell section is ensured.
Description
Technical Field
The invention belongs to an assembly jig frame and a working method used in the field of bridge manufacture, and particularly relates to an integral assembly jig frame for a steel shell section of a double-wall combined bridge tower and a working method thereof.
Background
The steel shell section of the double-wall combined bridge tower is shown in the figure 1, the steel shell section is thin in thickness, the inner wall plate and the outer wall plate are connected by angle steel, no solid partition plate exists, the overall rigidity of the steel shell section is weak, if the horizontal position assembly of the traditional steel tower section is adopted, the support is inconvenient to set, and the deformation of a block body in the turning-over and lifting processes is difficult to control.
Disclosure of Invention
The invention aims to: the invention provides an integral assembly jig frame by utilizing the characteristics that the vertical position of the steel shell structure of the combined bridge tower is higher than the horizontal position, and the surrounding rings of the wall plates are convenient for arranging the surrounding support, so that the two-way surrounding vertical assembly of the steel shell segments of the double-wall combined bridge tower is realized.
The technical scheme is as follows: the invention relates to an integral assembly jig frame for a steel shell section of a double-wall combined bridge tower, which comprises a base matched with the section shape of the steel shell section, a plurality of first vertical enclosing components which are arranged around the base and are distributed at intervals and used for enclosing the outer wall plate of the steel shell section, and a plurality of second vertical enclosing components which are arranged inside the base and are used for enclosing the inner wall plate of the steel shell section, wherein the first vertical enclosing components are arranged on the periphery of the base at intervals; an adjustable first horizontal support piece is arranged on the first vertical enclosure assembly; an adjustable second horizontal support piece is arranged on the second vertical enclosure assembly.
In a preferred mode of the invention, the top parts of the first vertical enclosure components are provided with channels communicated with the first vertical enclosure components.
The second vertical enclosing components are composed of square vertical enclosing components and triangular vertical enclosing components positioned on two sides of the square vertical enclosing components.
In a preferred mode of the present invention, the first horizontal support member is disposed on top of the first vertical enclosure assembly.
In a preferred mode of the invention, the second horizontal support member is disposed on top of the second vertical enclosure assembly.
A preferred mode of the invention is that the first vertical enclosure assembly is H-shaped.
One preferable mode of the invention is that one corner of the integral assembly jig frame is provided with a corner climbing ladder.
The working method of the integral assembly jig frame of the double-wall combined bridge tower steel shell section comprises the following steps:
(a) The flatness of the base of the whole assembly jig frame is controlled by adopting a level gauge, so that the whole flatness of the base is ensured to be less than or equal to 2mm;
(b) Scribing longitudinal base sample lines and transverse base sample lines on a base of the integral assembly jig frame by using a theodolite, and scribing plate thickness profile ground sample lines of a wall plate at the lower end of the steel shell section on the base by taking the ground sample lines as references, wherein the ground sample lines are used as references for controlling the size of a bottom opening of the steel shell section;
(c) Lifting an inner wall plate unit of the first steel shell segment, aligning the lower edge of the wall plate with a wall plate thickness profile ground pattern line of a base, aligning a vertical base line with a ground pattern base line of an integral assembly jig, controlling the horizontal base line elevation of the inner wall plate unit by a level gauge, arranging inclined support positioning wall plate angles of a triangular vertical enclosing and blocking assembly (133) on two sides of the inner wall plate, measuring the inclination angles of the wall plate by a laser plumber, positioning the bottom by a positioning baffle plate after passing the inclined support angles, stacking and fixing the inclined support positioning plate with the base, and fixing the top of the inclined support positioning wall plate on a jig stand column of a second vertical enclosing and blocking assembly by an adjustable second horizontal supporting piece;
(d) Sequentially positioning other inner wall plate units to form an inner wall peripheral shell, and stacking and fixing butt welding seams of the inner wall plates;
(e) Sequentially positioning outer wall plate units of the steel shell segments according to the steps and the process to form a steel shell segment shell of the whole cable tower combined bridge tower, stacking and fixing butt welds of the outer wall plate units, symmetrically welding after assembling inner connecting angle steel in a cavity of the steel shell segment, and assembling the inner hook ribs of the cavity after the segment welding is finished;
(f) After the integral welding of the steel shell section of the combined bridge tower is finished, the inclined support connected with the upright post of the enclosure assembly is opened, and the positioning of the steel shell section is finished.
The beneficial effects are that: (1) According to the invention, by combining the structural characteristics of the steel shell sections of the double-wall combined bridge tower, the inner side and the outer side of the steel shell of the combined bridge tower are respectively provided with the upright posts for enclosing, and the inner wall plate unit and the outer wall plate unit are assembled by sequentially vertically positioning from inside to outside in cooperation with the ground sample of the jig frame, so that the manufacturing of the Duan Shi bridge attitude condition of the simulation tower is realized, namely, the steel shell sections of the combined bridge tower are vertically assembled in a right position and welded at all positions, the problem of turning over of the sections in the assembling and welding processes is avoided, the production efficiency is improved, and the technical problem of easy deformation of the steel shell sections of the double-wall combined bridge tower is effectively overcome; (2) The invention realizes the vertical assembly of the steel shell sections of the double-wall combined bridge tower, and effectively controls the outline dimension of the steel shell of the combined bridge tower; (3) The wallboard is positioned by connecting the diagonal brace with the jig frame to form more stable and rigid connection, so that the welding deformation is effectively controlled; (4) The enclosure assembly is movable, and meets the assembly requirements of the steel shell sections of the double-wall combined bridge tower with different section sizes.
Drawings
FIG. 1 is a schematic structural view of a double wall composite bridge tower steel shell segment construction;
FIG. 2 is a cross-sectional view of the integrally assembled tire frame of embodiment 1 of the present invention in the horizontal direction;
FIG. 3 is a view showing the use of the integrally assembled tire frame according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram illustrating a positional relationship between a base and a first vertical enclosure assembly used in embodiment 1 of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Example 1: as shown in fig. 2, the integral assembly jig 1 of the steel shell section of the double-wall combined bridge tower according to the invention comprises the following structures: the base 11, a plurality of first vertical fence components 12, a plurality of second vertical fence components 13, a channel 14 and a corner ladder 15.
The shape of the base 11 is matched with the section shape of the steel shell section 2, the base 11 is made of welded I-beams, and the whole flatness is less than or equal to 2mm.
The first vertical enclosure components 12 of a plurality of H types are arranged around the base 11, are distributed at intervals and are used for enclosing a plurality of first vertical enclosure components 12 of the outer wall plate of the steel shell section 2, and an adjustable first horizontal supporting piece 121 is arranged at the top of the first vertical enclosure components 12 and is used for adjusting the position of the outer wall plate of the steel shell section 2.
The plurality of second vertical enclosure components 13 are arranged in the base 11 and are used for enclosing the inner wall plate of the steel shell section 2, the top of each second vertical enclosure component 13 is also provided with an adjustable second horizontal support piece 131, and the second horizontal support pieces 131 are used for adjusting the position of the inner wall plate of the steel shell section 2; due to the distribution characteristics of the inner wall plate of the steel shell segment 2, the plurality of second vertical enclosure components 13 are composed of square vertical enclosure components 132 and triangular vertical enclosure components 133 positioned on two sides of the square vertical enclosure components 132.
The upright posts of the first vertical enclosure assembly 12 and the second vertical enclosure assembly 13 are rectangular pipes, the enclosure upright posts are connected by adopting channel steel, the first vertical enclosure assembly 12 and the second vertical enclosure assembly 13 are movable, and the assembly requirements of the double-wall combined bridge tower steel shell sections with different section sizes are met.
The passageway 14 is used for enclosing the fender subassembly 12 together with a plurality of first perpendicularly, and passageway 14 sets up in the top that encloses fender subassembly 12 perpendicularly, and passageway 14 adopts the decorative pattern steel sheet to lay in this embodiment, and passageway 14 both sides set up not less than 1.2m guardrail, ensure safety, enclose with the wire net between the guardrail and keep off, prevent members such as small-size instrument, bolt from falling.
The corner climbing ladder 15 is arranged at the top corner of the integral assembly jig frame 1, so that operators can conveniently go up and down, and railing handrails are arranged at two sides of the corner climbing ladder 15, and the height is not lower than 1.2m.
The application method of the integral assembly jig frame comprises the following steps:
(1) The flatness of the base 11 of the whole assembly jig frame 1 is controlled by adopting a level gauge, so that the whole flatness of the base 11 is ensured to be less than or equal to 2mm; and a theodolite is adopted to scribe a longitudinal base sample line 16 and a transverse base sample line 17 on the base 11 of the integral assembly jig 1, and then the base 11 is used as a standard for controlling the bottom opening size of the steel shell segment 2 by scribing the contour ground sample line of the plate thickness of the wall plate at the lower end of the steel shell segment 2.
(2) The first inner wall plate unit is hoisted, the lower edge of the wall plate is aligned with the wall plate thickness profile ground sample line of the base 11, the vertical base line is aligned with the ground sample base line of the whole assembly jig, the level gauge controls the horizontal base line elevation of the wall plate unit, the two sides of the wall plate are provided with inclined support positioning wall plate angles of the triangular vertical enclosing and blocking assembly 133, the inclination angles of the wall plate are measured by a laser plumb meter, the bottom is positioned by a positioning baffle plate and fixedly connected with a platform, and the top is fixed on the jig stand column of the second vertical enclosing and blocking assembly 13 by an adjustable second horizontal support 131.
(3) Sequentially positioning other inner wall plate units to form an inner wall peripheral shell, and stacking and fixing butt welding seams of the inner wall plates; and (3) sequentially positioning the outer wall plate units according to the steps and the process to form a whole cable tower combined bridge tower steel shell segment 2 shell, stacking and fixing butt welds of the outer wall plates, symmetrically welding after assembling the connecting angle steel in the cavity, and assembling the cavity inner hook bars after the segment welding is finished.
(4) And after the integral welding of the steel shell section 2 of the combined bridge tower is finished, opening an inclined support connected with the upright post of the enclosure assembly.
Example 2: the structure of example 1 was used for the assembly of steel shell segments of a bridge modular axle tower, the operation steps being as follows:
(1) Firstly, manufacturing an integral assembly jig frame 1 according to the structure of the embodiment 1, and putting the integral assembly jig frame into use after the integral assembly jig frame is qualified;
(2) Determining the position size of the enclosure assembly according to the section size of the steel shell section 2;
(3) Marking out longitudinal and transverse ground sample lines and inner and outer skin ground sample lines of the wallboard on the base 11;
(4) Hoisting the wallboard units one by one, aligning the contour and ground sample lines of the wallboard thickness of the base 11, adjusting the inclination angle of the wallboard, and connecting the wallboard units with the upright post of the enclosure assembly by using an inclined strut;
(5) After the wallboard unit is assembled and welded, the components such as the connecting angle steel, the hooking ribs and the like are assembled, the connecting diagonal bracing of the upright post of the enclosure assembly is removed, the base line is corrected, and the tire is lifted.
The fifth large bridge combined bridge tower steel shell section of the Nanjing Yangtze river is assembled, namely, the integral assembly jig frame is adopted to realize the vertical assembly of the sections, all components are integrally hoisted after the assembly welding in the jig frame is finished, the combined bridge tower steel shell section is always in the bridge position erection posture, the turning operation is not needed, the hoisting deformation is greatly reduced, and the production efficiency is obviously improved.
Claims (6)
1. The integral assembly jig frame of the double-wall combined bridge tower steel shell section is characterized in that the integral assembly jig frame (1) comprises a base (11) matched with the section shape of the steel shell section (2), a plurality of first vertical enclosing components (12) which are arranged around the base (11) and are distributed at intervals and used for enclosing the outer wall plate of the steel shell section (2), and a plurality of second vertical enclosing components (13) which are arranged inside the base (11) and used for enclosing the inner wall plate of the steel shell section (2); an adjustable first horizontal support (121) is arranged on the first vertical enclosure assembly (12); an adjustable second horizontal support (131) is arranged on the second vertical enclosure assembly (13); the first horizontal supporting piece (121) is arranged at the top of the first vertical enclosure assembly (12); the second horizontal support piece (131) is arranged on the top of the second vertical enclosure assembly (13).
2. The integrally assembled jig frame of double wall composite bridge tower steel shell segments according to claim 1, characterized in that the top of several of said first vertical enclosure assemblies (12) is provided with channels (14) communicating with several of said first vertical enclosure assemblies (12).
3. The integrally assembled jig frame of double-walled composite bridge tower steel shell segments according to claim 1, characterized in that several of the second vertical enclosure assemblies (13) consist of square vertical enclosure assemblies (132) and triangular vertical enclosure assemblies (133) located on both sides of the square vertical enclosure assemblies (132).
4. The integrally assembled jig frame of double wall composite bridge tower steel shell segments according to claim 1, characterized in that said first vertical enclosure assembly (12) is H-shaped.
5. The integrally assembled jig frame of double-walled composite bridge tower steel shell segments according to any of the claims 1-4 characterized in that a corner of the integrally assembled jig frame (1) is provided with a corner ladder (15).
6. A method of operating a fully assembled jig frame for a double wall composite bridge tower steel shell segment according to claim 3, comprising the steps of:
(a) The flatness of the base (11) of the whole assembly jig frame (1) is controlled by adopting a level gauge, so that the whole flatness of the base (11) is ensured to be less than or equal to 2mm;
(b) A theodolite is adopted to scribe a longitudinal base sample line (16) and a transverse base sample line (17) on a base (11) of the integral assembly jig (1), and then the base (11) is used as a standard for controlling the size of a bottom opening of the steel shell section (2) by scribing a plate thickness profile ground sample line of a wall plate at the lower end of the steel shell section (2);
(c) Hoisting an inner wall plate unit of the first steel shell segment (2), aligning a vertical base line with a ground sample base line of an overall assembly jig frame (1) by a wall plate thickness profile ground sample line of a wall plate lower edge pair Ji De (11), controlling the horizontal base line elevation of the inner wall plate unit by a level gauge, arranging inclined support positioning wall plate angles of a triangular vertical enclosing and blocking assembly (133) on two sides of the inner wall plate, measuring the inclination angles of the wall plate by a laser plumber, positioning the qualified bottom by a positioning baffle plate, stacking and fixing the qualified bottom with a base (11), and fixing the top of the qualified bottom on a jig frame upright of a second vertical enclosing and blocking assembly (13) by an adjustable second horizontal supporting piece (131);
(d) Sequentially positioning other inner wall plate units to form an inner wall peripheral shell, and stacking and fixing butt welding seams of the inner wall plates;
(e) The outer wall plate units of the steel shell segments (2) are sequentially positioned according to the steps and the process to form a shell of the steel shell segments (2) of the whole cable tower combined bridge tower, butt welding seams of the outer wall plate units are fixedly stacked, angle steel is connected in a cavity of the steel shell segments (2) and then symmetrically welded, and hook ribs in the cavity are assembled after the segment welding is completed;
(f) And after the integral welding of the steel shell section (2) of the combined bridge tower is finished, opening an inclined support connected with the upright post of the enclosure assembly to finish the positioning of the steel shell section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190761.2A CN109295858B (en) | 2018-10-12 | 2018-10-12 | Integral assembly jig frame for steel shell sections of double-wall combined bridge tower and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190761.2A CN109295858B (en) | 2018-10-12 | 2018-10-12 | Integral assembly jig frame for steel shell sections of double-wall combined bridge tower and working method thereof |
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| CN109295858A CN109295858A (en) | 2019-02-01 |
| CN109295858B true CN109295858B (en) | 2023-11-28 |
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| CN201811190761.2A Active CN109295858B (en) | 2018-10-12 | 2018-10-12 | Integral assembly jig frame for steel shell sections of double-wall combined bridge tower and working method thereof |
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Families Citing this family (2)
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| CN110685226A (en) * | 2019-10-29 | 2020-01-14 | 中交二公局第二工程有限公司 | Hydraulic integral self-climbing construction platform |
| CN115519216B (en) * | 2022-09-21 | 2023-09-05 | 中铁宝桥（扬州）有限公司 | Welding deformation control method for large-sized steel tower block with open type asymmetric section |
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- 2018-10-12 CN CN201811190761.2A patent/CN109295858B/en active Active
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|---|---|---|---|---|
| CN101831866A (en) * | 2010-05-11 | 2010-09-15 | 天津市市政工程设计研究院 | Steel-concrete joint section structure of beams |
| CN202689016U (en) * | 2012-07-12 | 2013-01-23 | 中铁二十局集团有限公司 | Cofferdam assembling and lifting platform for double-wall steel cofferdam construction of deep-water bridge pier |
| CN204282228U (en) * | 2014-12-04 | 2015-04-22 | 中冶天工集团有限公司 | A kind of box steel arch beam Integral horizontal type group is to jig frame special |
| CN104818675A (en) * | 2015-02-13 | 2015-08-05 | 中交路桥华南工程有限公司 | Assembling method of rebar segments |
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| CN109295858A (en) | 2019-02-01 |
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