CN102817327A - Cat ladder device for steel tube arch bridge operation platform and building method of cat ladder device - Google Patents
Cat ladder device for steel tube arch bridge operation platform and building method of cat ladder device Download PDFInfo
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- CN102817327A CN102817327A CN201210351968XA CN201210351968A CN102817327A CN 102817327 A CN102817327 A CN 102817327A CN 201210351968X A CN201210351968X A CN 201210351968XA CN 201210351968 A CN201210351968 A CN 201210351968A CN 102817327 A CN102817327 A CN 102817327A
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- cat ladder
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- arch rib
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Abstract
The invention relates to a cat ladder device for a steel tube arch bridge operation platform, comprising at least two cat ladder groups which are symmetrically arranged at the left side and the right side of an arch rib along the length direction of a steel tube arch bridge, wherein two cat ladders of the cat ladder groups are welded together through a first connecting part and a second connecting part, the first connecting part is arranged above an upper chord tube of the arch rib and presses the upper chord tube of the arch rib, the second connecting part is arranged below a lower chord tube of the arch rib, the cat ladders are respectively welded to the upper chord tube and the lower chord tube of the arch rib through a third connecting part, and a wood plate is lapped on each cat ladder. The invention also provides a building method of the cat ladder device for the steel tube arch bridge operation platform. The cat ladder device has a simple structure, is convenient in operation and can be suitable for building multiple layers of operation platforms in different elevations.
Description
Technical field
The present invention relates to a kind of climbing ladder apparatus, be specifically related to a kind of climbing ladder apparatus and erection method thereof that is used for the steel pipe arch bridge operating platform.
Background technology
In the bridge construction construction, when carrying out steel tube arch rib, arch case or large-scale lifting, the operating platform of lifting contraposition and arch rib welding multilayer need be set in the arch rib joint.Because the steel tube arch great majority are circular cross-sections of dumbbell or three limbs; And a lot of steel tube arch elevations angle are more than 40 °; Common way is to set up steel pipe or welded reinforcement hanging basket in the steel tube arch rib joint, but owing to the structure of setting up steel pipe or welded reinforcement hanging basket is complicated, setting up needs the cost plenty of time in the process; Cost is higher, and versatility is bad.
Summary of the invention
The purpose of this invention is to provide a kind of climbing ladder apparatus that is used for the steel pipe arch bridge operating platform, it is simple in structure, easy and simple to handle, can be applicable to the setting up of multilayer operating platform at the different elevations angle.
Another object of the present invention provides a kind of erection method that is used for the climbing ladder apparatus of steel pipe arch bridge operating platform.
The climbing ladder apparatus that is used for the steel pipe arch bridge operating platform of the present invention comprises at least two group cat ladder groups, and said cat ladder group is arranged symmetrically in the left and right sides of arch rib along the steel pipe arch bridge length direction; Two cat ladders of said cat ladder group weld together through first connector, second connector; Said first connector is positioned at the top that arch rib winds up and manages; And be pressed in arch rib wind up the pipe on; Said second connector is positioned at the below of arch rib lower chord tube, and said cat ladder is welded on arch rib through the 3rd connector respectively and winds up on pipe, the arch rib lower chord tube, is erected with plank on the said cat ladder.
Said first connector, second connector are angle steel, and said the 3rd connector is L shaped steel plate.
The erection method that is used for the climbing ladder apparatus of steel pipe arch bridge operating platform of the present invention, its step is following:
Step 1: be welded at least four cat ladders with angle steel and reinforcing bar on the ground, two cat ladders are one group of cat ladder group;
Step 2: at first two cat ladders with every group of cat ladder group weld together with first connector, and the cat ladder group that will be welded with first connector is then inserted the arch rib joint respectively, and said cat ladder group is arranged symmetrically in the left and right sides of arch rib along the steel pipe arch bridge length direction; And guarantee that first connector on every group of cat ladder group all is pressed in steel tube arch rib and winds up on the pipe; Then each cat ladder being welded on arch rib respectively with two the 3rd connectors winds up on pipe, the arch rib lower chord tube; Again according to the operating platform desired height; Two cat ladders of every group of cat ladder group are welded together with second connector, and second connector on every group of cat ladder group all is positioned at the below of arch rib lower chord tube;
Step 3: level is set up plank on the ladder of the two adjacent groups cat ladder group step and second connector.Promptly formed the multilayer operating platform that supplies operating personnel the arch rib joint to be carried out contraposition or welding operation.
It is big and need set up the situation of multilayer operating platform that this device is specially adapted to the steel tube arch elevation angle.
Beneficial effect of the present invention: it is simple in structure, sets up easily, and cost is low; Owing to do not receive the influence at the arch rib elevation angle, can be applicable to setting up of the multilayer platform of not planting the elevation angle, so versatility is better; Its safety, reliable and peace are torn open conveniently, and be reusable.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional drawing along A-A line among Fig. 1.
The specific embodiment
Combine accompanying drawing that the present invention is done further explain at present:
The climbing ladder apparatus that is used for the steel pipe arch bridge operating platform as depicted in figs. 1 and 2 comprises two groups of cat ladder groups, and the cat ladder group is arranged symmetrically in the left and right sides of arch rib 1 along the steel pipe arch bridge length direction; Two cat ladders 9 of cat ladder group weld together through first connector 2, second connector 10; First connector 2 is positioned at arch rib pipe 6 the top of winding up; And be pressed in arch rib wind up the pipe 6 on; Second connector 10 is positioned at the below of arch rib lower chord tube 8, each cat ladder 9 respectively through the 3rd connector 3 be welded on arch rib wind up pipe 6, on the arch rib lower chord tube 8, on cat ladder 9, be erected with plank 5.
The erection method that is used for the climbing ladder apparatus of steel pipe arch bridge operating platform of the present invention, its step is following:
Step 1: being welded into 9, two cat ladders of four cat ladders 9 with angle steel and reinforcing bar on the ground is one group of cat ladder group, totally two groups of cat ladder groups;
Step 2: at first two cat ladders, 9 usefulness, first connector 2 with every group of cat ladder group welds together; Two groups of cat ladder groups that will be welded with first connector 2 are then inserted arch rib joint 7 places respectively, and two groups of cat ladder groups are arranged symmetrically in the left and right sides of arch rib 1 along the steel pipe arch bridge length direction; And guarantee that first connector 2 on every group of cat ladder group all is pressed in steel tube arch rib and winds up on the pipe 6; Then with two the 3rd connectors 3 of four cat ladders, 9 usefulness be welded on respectively arch rib wind up manage 6, on the arch rib lower chord tube 8; Again according to the operating platform desired height; Two cat ladders, 9 usefulness, second connector 10 of every group of cat ladder group is welded together, and guarantee second connector 10 on two groups of cat ladder groups on same horizontal plane, and second connector 10 on every group of cat ladder group all is positioned at the below of arch rib lower chord tube 8;
Step 3: level is set up plank 5 on the ladder step of two groups of cat ladder groups 4 and second connector 10, has promptly formed the multilayer operating platform that supplies operating personnel arch rib joint 7 to be carried out contraposition or welding operation.
Above-mentioned described first connector 2, second connector 10 are angle steel, and the 3rd connector 3 is L shaped steel plate.
Cat ladder group of the present invention also can be provided with three groups or four groups according to the actual requirements and constitute additional embodiments.
Claims (3)
1. climbing ladder apparatus that is used for the steel pipe arch bridge operating platform, it is characterized in that: comprise at least two group cat ladder groups, said cat ladder group is arranged symmetrically in the left and right sides of arch rib (1) along the steel pipe arch bridge length direction; Two cat ladders of said cat ladder group weld together through first connector (2), second connector (10); Said first connector is positioned at the wind up top of pipe (6) of arch rib; And be pressed in arch rib wind up the pipe on; Said second connector is positioned at the below of arch rib lower chord tube (8), and said cat ladder is welded on arch rib through the 3rd connector (3) respectively and winds up on pipe, the arch rib lower chord tube, is erected with plank (5) on the said cat ladder.
2. the climbing ladder apparatus that is used for the steel pipe arch bridge operating platform according to claim 1 is characterized in that: said first connector (2), second connector (10) are angle steel, and said the 3rd connector (3) is L shaped steel plate.
3. according to claim 1 or claim 2 the erection method of the climbing ladder apparatus that is used for the steel pipe arch bridge operating platform, its step is following:
Step 1: be welded at least four cat ladders (9) with angle steel and reinforcing bar on the ground, two cat ladders are one group of cat ladder group;
Step 2: at first two cat ladders (9) with every group of cat ladder group weld together with first connector (2); The cat ladder group that will be welded with first connector is then inserted arch rib joint (7) respectively and is located, and said cat ladder group is arranged symmetrically in the left and right sides of arch rib (1) along the steel pipe arch bridge length direction; And guarantee that first connector on every group of cat ladder group all is pressed in steel tube arch rib and winds up on the pipe (6); Then each cat ladder being welded on arch rib respectively with two the 3rd connectors (3) winds up on pipe, the arch rib lower chord tube (8); Again according to the operating platform desired height; Two cat ladders of every group of cat ladder group are welded together with second connector (10), and second connector on every group of cat ladder group all is positioned at the below of arch rib lower chord tube;
Step 3: ladder step (4) and the last level of second connector (10) in two adjacent groups cat ladder group are set up plank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351968XA CN102817327A (en) | 2012-09-20 | 2012-09-20 | Cat ladder device for steel tube arch bridge operation platform and building method of cat ladder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351968XA CN102817327A (en) | 2012-09-20 | 2012-09-20 | Cat ladder device for steel tube arch bridge operation platform and building method of cat ladder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102817327A true CN102817327A (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210351968XA Pending CN102817327A (en) | 2012-09-20 | 2012-09-20 | Cat ladder device for steel tube arch bridge operation platform and building method of cat ladder device |
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| CN (1) | CN102817327A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882809A (en) * | 2014-03-28 | 2014-06-25 | 腾达建设集团股份有限公司 | Combination basket structure and construction method thereof |
| CN106223205A (en) * | 2016-08-30 | 2016-12-14 | 中铁宝桥集团有限公司 | A kind of preventer of overhead welding construction |
| CN112921819A (en) * | 2021-03-04 | 2021-06-08 | 广西路桥工程集团有限公司 | Safe operation platform system used in construction process of double-flying-wing arch bridge |
| CN113389366A (en) * | 2021-07-28 | 2021-09-14 | 中船黄埔文冲船舶有限公司 | Arch bridge folds mouth with chain platform |
Citations (3)
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| JP2004068527A (en) * | 2002-08-09 | 2004-03-04 | Kajima Corp | Get-on-and-off stage for slip form paving, and execution method |
| CN202064359U (en) * | 2011-05-13 | 2011-12-07 | 中国葛洲坝集团股份有限公司 | Crossbeam wet-joint overhanging construction device |
| CN202787091U (en) * | 2012-09-20 | 2013-03-13 | 中铁八局集团第一工程有限公司 | Crawling ladder device for operating platforms for steel-tube arch bridge |
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2012
- 2012-09-20 CN CN201210351968XA patent/CN102817327A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004068527A (en) * | 2002-08-09 | 2004-03-04 | Kajima Corp | Get-on-and-off stage for slip form paving, and execution method |
| CN202064359U (en) * | 2011-05-13 | 2011-12-07 | 中国葛洲坝集团股份有限公司 | Crossbeam wet-joint overhanging construction device |
| CN202787091U (en) * | 2012-09-20 | 2013-03-13 | 中铁八局集团第一工程有限公司 | Crawling ladder device for operating platforms for steel-tube arch bridge |
Non-Patent Citations (1)
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| 李旭光: ""达渝高速公路州河大桥增设检修通道设计"", 《西南公路》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882809A (en) * | 2014-03-28 | 2014-06-25 | 腾达建设集团股份有限公司 | Combination basket structure and construction method thereof |
| CN103882809B (en) * | 2014-03-28 | 2015-10-28 | 腾达建设集团股份有限公司 | Combination barrel structure and construction method thereof |
| CN106223205A (en) * | 2016-08-30 | 2016-12-14 | 中铁宝桥集团有限公司 | A kind of preventer of overhead welding construction |
| CN112921819A (en) * | 2021-03-04 | 2021-06-08 | 广西路桥工程集团有限公司 | Safe operation platform system used in construction process of double-flying-wing arch bridge |
| CN113389366A (en) * | 2021-07-28 | 2021-09-14 | 中船黄埔文冲船舶有限公司 | Arch bridge folds mouth with chain platform |
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| PB01 | Publication | ||
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Application publication date: 20121212 |