CN109653102B - Swivel construction device and construction method for middle-high steel arch bridge - Google Patents
Swivel construction device and construction method for middle-high steel arch bridge Download PDFInfo
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- CN109653102B CN109653102B CN201811602787.3A CN201811602787A CN109653102B CN 109653102 B CN109653102 B CN 109653102B CN 201811602787 A CN201811602787 A CN 201811602787A CN 109653102 B CN109653102 B CN 109653102B
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 230000000149 penetrating effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 4
- 244000208734 Pisonia aculeata Species 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000725 suspension Substances 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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a turning construction device and a construction method for a middle-high steel arch bridge, which are used for realizing sectional turning construction of the steel arch bridge, wherein the steel arch bridge comprises an arch foot and a half-arch section, the arch foot is fixed on a bridge surface beam, a dividing surface matched with the half-arch section is arranged on the arch foot, the construction device comprises a hinged support, a back-pulling mechanism, a lifting mechanism and a supporting mechanism, the hinged support is fixed on the arch foot, the half-arch section can rotate around the hinged support below the dividing surface, the supporting mechanism is arranged on the half-arch section, one ends of the back-pulling mechanism and the lifting mechanism are connected with one end of the supporting mechanism, which is far away from the half-arch section, the other end of the back-pulling mechanism is fixed on the bridge surface beam, and the other end of the lifting mechanism is connected with one end of the half-arch section, which is far away from the arch foot. Compared with the prior art, the invention has the advantages of ensuring welding quality and stability, greatly reducing the construction period of the arch bridge and the like.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a swivel construction device and a swivel construction method for a middle-high steel arch bridge.
Background
In recent years, with the progress of society, the development of economy and the improvement of aesthetic quality, more bridge designs are not limited to the realization of using functions, and more attention is paid to the novelty, uniqueness, organic combination with urban landscapes and the like of the shapes. Steel arch bridges in different forms are continuously emerging, and the ultra-high, overweight and ultra-large steel arch sections bring great challenges to bridge construction. The traditional steel arch bridge construction method such as a suspension assembly method, a truss arm extending method, a truss erecting method and the like has the defects of larger dead weight, higher building height, more construction procedures in a bracket method and more arch rib joints when the span is larger. Therefore, the method has the defects of long period, large high-altitude welding quantity, difficult guarantee of welding quality, potential safety hazard of operators, large tonnage of a crane, high construction measure cost and the like. So that such conventional extensive, less efficient construction methods are no longer suitable today. Therefore, the bridge construction needs to adopt a new process to make up the defects of the traditional construction method.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-steel arch bridge swivel construction device and a construction method.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a well high steel arch bridge construction device that turns for realize the sectional type construction of turning of steel arch bridge, steel arch bridge includes arch foot and half arch section, the arch foot is fixed in on the bridge deck girder, has the face of cutting apart that matches with half arch section on the arch foot, construction device includes hinge support, back-pulling mechanism, elevating system and supporting mechanism, the hinge support is fixed in on the arch foot, and be in under the face of cutting apart, half arch section can wind the hinge support is rotatory, supporting mechanism installs on half arch section, back-pulling mechanism and elevating system's one end is kept away from with supporting mechanism half arch section's one end is connected, back-pulling mechanism's the other end is fixed in on the bridge deck girder, elevating system's the other end is kept away from the one end of arch foot with half arch section and is connected.
Further, the back-pulling mechanism and the lifting machine are arranged at two sides of the supporting mechanism at an angle.
Further, the back pulling mechanism comprises a back pulling rope and a first core penetrating oil cylinder arranged on the back pulling rope, one end of the back pulling rope is connected with the supporting mechanism, and the other end of the back pulling rope is fixed on the bridge surface beam.
Further, the lifting mechanism comprises a first lifting rope, a second core penetrating oil cylinder and a third core penetrating oil cylinder, the first lifting rope and the second lifting rope are arranged in an angle mode, one end of the first lifting rope and one end of the second lifting rope are connected with the supporting mechanism, the other end of the first lifting rope and one end of the second lifting rope are connected with the half arch section, the second core penetrating oil cylinder is arranged on the first lifting rope, and the third core penetrating oil cylinder is arranged on the second lifting rope.
Further, the supporting mechanism comprises a steel pipe truss and a truss support which are connected, and the steel pipe truss and the truss support are fixed on the half arch section at an angle.
Further, the construction device further comprises a jig frame for supporting the half arch section.
Further, two sets of construction devices are symmetrically arranged.
The invention also provides a swivel construction method of the middle-high steel arch bridge, which is realized by using the construction device, and comprises the following steps:
1) Dividing the steel arch bridge to ensure that the steel arch bridge comprises two arch legs and two half-arch sections, wherein the two half-arch sections are in a lying position before construction;
2) Symmetrically installing two sets of construction devices;
3) Rotating the two half-arch sections around the hinged support by a back-pulling mechanism until the half-arch sections rotate to coincide with the arch feet at the dividing surfaces, and adjusting the arch line type of the half-arch sections by a lifting mechanism until the arch line type meets the design requirement, wherein the half-arch sections finish rotating by a horizontal position;
4) And connecting the two half arch sections, and installing cables to complete the whole construction process of the steel arch bridge.
Further, in the step 1), the half arch section is supported by a jig frame.
Further, in the step 4), the two half arch sections are connected by a folding section.
Compared with the prior art, the invention has the following beneficial effects:
1) The arch assembly of the invention adopts a horizontal splicing method, when in horizontal splicing, the height of the assembled brackets is greatly reduced, the number of the brackets is reduced, and the welding quality can be ensured;
2) The supporting mechanism adopts a steel pipe truss, so that the rigidity of the auxiliary structure is improved, and the overall stability is improved;
3) The back pulling mechanism and the lifting mechanism are combined by rigid and flexible members, so that the stress is reasonable, and the arch rib line type can be adjusted;
4) The hoisting process adopts a small-tonnage crane to assist hoisting, and has low requirements on the strength of an operation site and a bridge deck
5) The invention can greatly reduce the construction period of the arch bridge and finally save the construction cost of engineering.
Drawings
FIG. 1 is an elevational view of a typical medium and high steel arch bridge according to the present invention in a bridged state;
FIG. 2 is a segmented schematic view of a steel arch bridge of the present invention;
FIG. 3 is an initial state of the swivel construction of the steel arch bridge of the invention;
FIG. 4 shows a swivel construction state of the steel arch bridge of the present invention;
in the figure, 1, a main steel arch, 2, cables, 3, bridge girders, 4, piers, 5, a dividing surface, 6, arch feet, 7, a hinged support, 8, a half arch I, 9, a half arch II, 10, a folding section, 11, a jig frame, 12, a back guy cable, 13, a lifting cable I, 14, a lifting cable II, 15, a steel pipe truss, 16, a truss support, 17, a core penetrating cylinder I, 18, a core penetrating cylinder II and 19 a core penetrating cylinder III.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
The embodiment provides a middle-high steel arch bridge swivel construction device, which is used for realizing sectional swivel construction of a steel arch bridge, arch assembly adopts a horizontal splicing method, the arch bridge is realized swivel in sections, assembly is further completed, and the constructed arch bridge is shown in fig. 1.
As shown in fig. 2, in this embodiment, the steel arch bridge is cut at the arch springing to form a dividing plane 5, and the main arch segment 1 is specifically divided into two arch springing 6, two half arch segments and a folding segment 10, where the half arch segments are a half arch one 8 and a half arch two 9.
As shown in fig. 3 and 4, the construction device includes a hinged support 7, a pull-back mechanism, a lifting mechanism and a supporting mechanism, the hinged support 7 is fixed on the arch foot 6, and below the division surface 5, the half arch section can rotate around the hinged support 7, the supporting mechanism is mounted on the half arch section, one ends of the pull-back mechanism and the lifting mechanism are connected with one end of the supporting mechanism far away from the half arch section, the other end of the pull-back mechanism is fixed on the bridge deck beam 3, and the other end of the lifting mechanism is connected with one end of the half arch section far away from the arch foot 6. The back pulling mechanism and the lifting machine are arranged at two sides of the supporting mechanism at an angle.
The back pulling mechanism comprises a back inhaul cable 12 and a first core penetrating cylinder 17 arranged on the back inhaul cable 12, one end of the back inhaul cable 12 is connected with the supporting mechanism, and the other end of the back inhaul cable 12 is fixed on the bridge deck beam 3. The lifting mechanism comprises a first lifting rope 13, a second lifting rope 14, a second core penetrating oil cylinder 18 and a third core penetrating oil cylinder 19, wherein the first lifting rope 13 and the second lifting rope 14 are arranged at an angle, one ends of the first lifting rope 13 and the second lifting rope 14 are connected with the supporting mechanism, the other ends of the first lifting rope 13 and the second lifting rope 14 are connected with the half arch section, the second core penetrating oil cylinder 18 is arranged on the first lifting rope 13, and the third core penetrating oil cylinder 19 is arranged on the second lifting rope 14. The supporting mechanism comprises a steel pipe truss 15 and a truss support 16 which are connected, and the steel pipe truss 15 and the truss support 16 are fixed on the half arch section at an angle.
The construction equipment further comprises a jig frame 11 for supporting the half arch section.
During construction, two construction devices are symmetrically arranged.
The construction method realized by the medium-high steel arch bridge swivel construction device comprises the following steps:
1) The main steel arch is segmented into two arch legs 6, a half arch first 8, a half arch second 9 and a folding section 10, the two arch legs 6 are arranged on the bridge deck beam 3 according to set positions, a segmentation surface 5 is formed at the arch leg 6, and the half arch first 8 and the half arch second 9 are supported by a jig 11.
2) The swivel construction device is symmetrically provided with two sets which respectively act on the half arch I8 and the half arch II 9. Taking the construction process of the half arch 8 as an example, a hinged support 7 is welded below the dividing surface 5 and the arch springing 6 and used as a support for the turning process, and a steel pipe truss and a truss support are welded on the half arch 8.
Based on the installed swivel construction device, tensioning the first core penetrating cylinder 17 to enable the first half arch 8 to rotate around the hinged support 7 until the first half arch 8 rotates to coincide with the arch springing 6 at the dividing surface 5; after the half arch 8 and the arch foot 6 are overlapped on the dividing surface 5, the core penetrating cylinder II 18 and the core penetrating cylinder III 19 are adjusted until the arch line meets the design requirement.
The same method as described above is applied to the half arch two 9.
3) And (5) installing the closure section 10, removing the jig frame 11, and finally installing the cable 2 to complete the whole construction process of the steel arch bridge.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (7)
1. The construction device is characterized by comprising a hinged support (7), a back-pulling mechanism, a lifting mechanism and a supporting mechanism, wherein the hinged support (7) is fixed on the hinged support (6), the semi-arch section can rotate around the hinged support (7) below the hinged support (5), the supporting mechanism is arranged on the semi-arch section, one ends of the back-pulling mechanism and the lifting mechanism are connected with one end of the supporting mechanism, which is far away from the semi-arch section, of the semi-arch section, the other end of the back-pulling mechanism is fixed on the bridge surface (3), and the other end of the lifting mechanism is connected with one end of the semi-arch section, which is far away from the arch section (6);
the back pulling mechanism comprises a back pulling rope (12) and a first core penetrating cylinder (17) arranged on the back pulling rope (12), one end of the back pulling rope (12) is connected with the supporting mechanism, and the other end of the back pulling rope is fixed on the bridge surface beam (3);
the lifting mechanism comprises a first lifting rope (13), a second lifting rope (14), a second core penetrating oil cylinder (18) and a third core penetrating oil cylinder (19), wherein the first lifting rope (13) and the second lifting rope (14) are arranged at an angle, one end of the first lifting rope (13) and one end of the second lifting rope (14) are connected with the supporting mechanism, the other end of the first lifting rope is connected with the half-arch section, the second core penetrating oil cylinder (18) is arranged on the first lifting rope (13), and the third core penetrating oil cylinder (19) is arranged on the second lifting rope (14);
the supporting mechanism comprises a steel pipe truss (15) and a truss support (16) which are connected, and the steel pipe truss (15) and the truss support (16) are fixed on the half arch section at an angle.
2. The device for constructing the middle-high steel arch bridge by turning according to claim 1, wherein the back-pulling mechanism and the lifting machine are arranged at two sides of the supporting mechanism in an angle.
3. A medium and high steel arch bridge swivel construction arrangement according to claim 1, characterized in that the construction arrangement further comprises a jig frame (11) for supporting the half arch segments.
4. The middle-high steel arch bridge swivel construction device according to claim 1, wherein two sets of the construction devices are symmetrically arranged.
5. A method for constructing a middle-high steel arch bridge by using the construction device as claimed in any one of claims 1 to 4, comprising the following steps:
1) Dividing the steel arch bridge to ensure that the steel arch bridge comprises two arch legs (6) and two half-arch sections, wherein the two half-arch sections are in a lying position before construction;
2) Symmetrically installing two sets of construction devices;
3) The turning of the two half-arch sections is carried out, the half-arch sections rotate around the hinged support (7) through the back-pulling mechanism until the half-arch sections rotate to be overlapped with the arch feet (6) at the dividing surface (5), and the arch line type of the half-arch sections is adjusted through the lifting mechanism until the arch line type meets the design requirement, and the turning of the half-arch sections is completed from the horizontal position;
4) And connecting the two half arch sections, and installing a cable (2) to complete the whole construction process of the steel arch bridge.
6. The method for constructing a medium-high steel arch bridge according to claim 5, wherein in the step 1), the half arch section is supported by a jig frame (11).
7. The method for constructing a high-middle steel arch bridge according to claim 5, wherein in the step 4), two half arch segments are connected by a folding segment (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602787.3A CN109653102B (en) | 2018-12-26 | 2018-12-26 | Swivel construction device and construction method for middle-high steel arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602787.3A CN109653102B (en) | 2018-12-26 | 2018-12-26 | Swivel construction device and construction method for middle-high steel arch bridge |
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| Publication Number | Publication Date |
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| CN109653102A CN109653102A (en) | 2019-04-19 |
| CN109653102B true CN109653102B (en) | 2023-10-13 |
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| CN201811602787.3A Active CN109653102B (en) | 2018-12-26 | 2018-12-26 | Swivel construction device and construction method for middle-high steel arch bridge |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110065887A (en) * | 2019-05-10 | 2019-07-30 | 中建八局第四建设有限公司 | Space net rack steel construction bidirectional rotation lifting construction method |
| CN114182647B (en) * | 2021-12-10 | 2023-06-27 | 贵州桥梁建设集团有限责任公司 | Construction method for lifting and turning weak arch |
| CN118065643A (en) * | 2024-02-01 | 2024-05-24 | 深圳市华晟建设集团股份有限公司 | Sliding lifting construction method for large-span ultra-high beam steel member |
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