CN111576256A - Steel pipe concrete arch bridge cable replacing device - Google Patents
Steel pipe concrete arch bridge cable replacing device Download PDFInfo
- Publication number
- CN111576256A CN111576256A CN202010537391.6A CN202010537391A CN111576256A CN 111576256 A CN111576256 A CN 111576256A CN 202010537391 A CN202010537391 A CN 202010537391A CN 111576256 A CN111576256 A CN 111576256A
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- Prior art keywords
- arch bridge
- cable
- pair
- arch
- bracket
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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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
- E01D4/00—Arch-type bridges
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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 a steel pipe concrete arch bridge cable replacing device, which is used for replacing a sling of a sling structure arch bridge and is characterized by comprising the following components: the device comprises a saddle used for erecting on an arch rib of the arch bridge, a bracket used for supporting under a cross beam of the arch bridge, and a temporary suspension rod used for connecting the saddle and the bracket; the temporary suspension rod is used for tensioning and supporting the cross beam to replace the stress of the current sling, and the cable replacing device is detached after the replacement of the current sling is completed. The device can ensure the whole safety of the bridge arch beam without influencing the vehicle passing in the cable replacement process and the secondary cable replacement process, so that the arch rib and the main beam have definite force transfer and reasonable stress.
Description
Technical Field
The invention belongs to the technical field of bridge engineering, and particularly relates to a steel pipe concrete arch bridge cable replacing device.
Background
Since the 20 th century and the 50 th century, concrete-filled steel tube arch bridges are widely used in China, with the continuous development of bridge construction technology, a plurality of concrete-filled steel tube arch bridges with single-sling structures are built in China, single slings are flexible slings and are usually made of cold-rolled round steel bars and high-strength steel wires, and the built bridges are in the leading level in the world regardless of span or result and construction technology. However, due to the quality of structural materials, the construction technology level, the design load level, the later use and maintenance inconvenience, the influence of the environment on the corrosion of the bridge structure and the like, the collapse accidents of some single-sling arch bridges occur due to sling breakage. Therefore, the regular inspection of the suspension cable is necessary, the replacement of the steel pipe concrete single suspension cable has very important practical significance, the single suspension cable structure is replaced by the double suspension cable structure, and when the cable is replaced for the second time, the bridge is guaranteed to be stressed reasonably, the structure is safe, and the vehicle passing is not influenced.
Disclosure of Invention
The invention aims to provide a steel tube concrete arch bridge cable replacing device, so that the whole safety of a bridge arch beam is ensured in the steel tube concrete arch bridge cable replacing device or the secondary cable replacing process, the stress is reasonable, and the vehicle passing is not influenced.
The invention is realized in this way, a kind of steel tube concrete arch bridge changes the cable device, is used for changing the sling of the arch bridge of the sling structure, the apparatus includes: the device comprises a saddle used for erecting on an arch rib of the arch bridge, a bracket used for supporting under a cross beam of the arch bridge, and a temporary suspension rod used for connecting the saddle and the bracket; the temporary suspension rod is used for tensioning and supporting the cross beam to replace the stress of the current sling, and the cable replacing device is detached after the replacement of the current sling is completed.
Preferably, the saddle comprises an upper bearing frame, a height-adjustable support welded on the lower side of the upper bearing frame and a pair of operation frames welded on the lower side of the upper bearing frame, a through groove formed between the two operation frames is clamped on two sides of the arch rib, the upper bearing frame and the support form two contact surfaces to press on the arch rib, and the horizontal included angle of the upper bearing frame is controlled by adjusting the height of the support.
Preferably, the upper force-bearing frame comprises a pair of parallel section steels and a pair of I-shaped steels welded between the pair of section steels; the section steel is perpendicular to the arch rib, and the section steel is provided with a positioning hole for penetrating the end part of the temporary hanging rod.
Preferably, the support comprises a pair of screw rods vertically arranged on the lower side of the upper force bearing frame, and a frame beam, wherein through holes respectively penetrating through one screw rod are formed in two ends of the frame beam, and the position of the frame beam on the screw rods is controlled by matching with bolts.
Preferably, the bracket comprises a lower bearing frame, an inclined base plate welded on the upper side of the lower bearing frame and a pair of positioning frames welded on the upper side of the lower bearing frame, the positioning frame body is provided with an opening, the opening between the two positioning frames forms a positioning channel sleeved on the cross beam, and the lower bearing frame and the inclined base plate form a contact surface which is attached to the bottom side of the cross beam.
Preferably, the lower force bearing frame comprises a pair of parallel section steels and a pair of I-shaped steels welded between the pair of section steels; the section steel is perpendicular to the cross beam, and positioning holes for penetrating the end parts of the temporary hanging rods are formed in the section steel.
The invention overcomes the defects of the prior art and provides a steel pipe concrete arch bridge cable replacing device which can be used for replacing the force of an old single sling of the steel pipe concrete arch bridge, then dismantling the old single sling, installing a new double sling, and further transferring the force on the cable replacing device to the new double sling in a proper mode. In the replacement of the sling, two processes are applied to replace the old single sling: the first process is to move the cable force on the single sling from the single sling needing to be replaced to the invented cable replacing device, and the second process is to move the force from the invented cable replacing device to a new double sling, so that the structure of the single sling is changed into the structure of the double sling, and the stress of the second cable replacement is reasonable.
Compared with the defects and shortcomings of the prior art, the invention has the following beneficial effects: the device can ensure the whole safety of the bridge arch beam without influencing the vehicle passing in the cable replacement process and the secondary cable replacement process, so that the arch rib and the main beam have definite force transfer and reasonable stress.
Drawings
FIG. 1 is a schematic perspective view of a concrete filled steel tube arch bridge cable replacing device according to the present invention;
FIG. 2 is a diagram of the overall application effect of the concrete filled steel tube arch bridge cable replacing device of the invention;
FIG. 3 is a view showing the effect of the saddle of the concrete filled steel tube arch bridge cable replacing device in one view;
FIG. 4 is a detailed structural view of a saddle in the concrete filled steel tube arch bridge cable replacement device of the present invention;
FIG. 5 is a view showing the effect of applying the saddle to the arch rib of the cable replacing device for the steel pipe concrete arch bridge from a further viewing angle;
FIG. 6 is a diagram illustrating the effect of the bracket in one view angle in the concrete filled steel tube arch bridge cable replacement device according to the present invention;
fig. 7 is a detail view of the bracket of the concrete filled steel tube arch bridge cable-changing device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 7, fig. 1 is a schematic perspective view of a concrete filled steel tube arch bridge cable replacing device according to the present invention; FIG. 2 is a diagram of the overall application effect of the concrete filled steel tube arch bridge cable replacing device of the invention; FIG. 3 is a view showing the effect of the saddle of the concrete filled steel tube arch bridge cable replacing device in one view; FIG. 4 is a detailed structural view of a saddle in the concrete filled steel tube arch bridge cable replacement device of the present invention; FIG. 5 is a view showing the effect of applying the saddle to the arch rib of the cable replacing device for the steel pipe concrete arch bridge from a further viewing angle; FIG. 6 is a diagram illustrating the effect of the bracket in one view angle in the concrete filled steel tube arch bridge cable replacement device according to the present invention; fig. 7 is a detail view of the bracket of the concrete filled steel tube arch bridge cable-changing device of the present invention.
In the embodiment of the invention, the basic structure of the arch bridge with the sling structure comprises a cross beam 2 with an arch rib 1 positioned right below the arch rib 1, and the cross beam 2 is pulled by a sling 3 by taking the arch rib 1 as a bearing point; wherein, the arch rib 1 and the crossbeam 2 are both provided with a branch anchor plate 7, and the two ends of the sling 3 are respectively connected and fixed on the branch anchor plate 7. On the basis, the invention provides a steel pipe concrete arch bridge cable replacing device, which is used for replacing a sling 3 of an arch bridge with the sling 3 structure, and comprises: a saddle 4 for erecting on the arch bridge arch rib 1, a bracket 5 for supporting under the arch bridge beam 2, and a temporary suspension rod 6 for connecting the saddle 4 and the bracket 5; wherein the temporary suspension rod 6 tensions and supports the cross beam 2 to replace the stress of the current sling 3, and after the sling 3 between the two anchor plate parts 7 is detached and a new sling 3 is installed, the stress of the temporary suspension rod 6 is relieved and the cable replacing device is detached.
In the embodiment of the present invention, the saddle 4 is detachably mounted on the arch rib 1, the bracket 5 is mounted on the cross beam 2, both ends of the temporary suspension rod 6 are connected to the connecting saddle 4 and the bracket 5, respectively, and the bracket 5 slightly supports the cross beam 2 from the bottom by shortening or tightening the temporary suspension rod 6 with the saddle 4 as a fixed point, and at this time, the suspension cable 3 is in a slack state, and after the suspension cable 3 is removed and replaced with a new suspension cable 3, the temporary suspension rod 6 is extended, shortened, or loosened, and the cross beam 2 is returned to receive a force by the updated suspension cable 3, and the bracket 5 is separated from the cross beam 2, and the saddle 4, the bracket 5, and the temporary suspension rod 6 are detached from the arch bridge.
In the embodiment of the invention, more specifically, the saddle 4 comprises an upper bearing frame 4-1, a height-adjustable support frame 4-2 welded on the lower side of the upper bearing frame 4-1, and a pair of operation frames 4-3 welded on the lower side of the upper bearing frame 4-1, a through groove formed between the two operation frames 4-3 is clamped on two sides of the arch rib 1, the upper bearing frame 4-1 and the support frame 4-2 form two contact surfaces to press on the arch rib 1, and the horizontal included angle of the upper bearing frame 4-1 is controlled by adjusting the height of the support frame 4-2.
In the embodiment of the invention, the operation frames 4-3 are operation tables capable of accommodating workers to work, and the through groove formed between the two operation frames 4-3 can be clamped on two sides of the arch rib 1 just for the purpose of stabilizing the saddle frame 4. In the embodiment of the invention, more specifically, the upper force bearing frame 4-1 comprises a pair of parallel section steels and a pair of I-shaped steels welded between the pair of section steels; the section steel is perpendicular to the arch rib 1, and positioning holes for penetrating the end parts of the temporary suspenders 6 are formed in the section steel. In addition, since the arch rib 1 is of an arc-shaped structure, in order to keep the force bearing frame horizontal for facilitating uniform stress, the height can be adjusted through the bottom end of the support 4-2, in the embodiment of the invention, more specifically, the support 4-2 comprises a pair of screw rods 4-4 vertically arranged at the lower side of the upper force bearing frame 4-1, and a frame beam, the two ends of which are provided with through holes respectively penetrating through one screw rod 4-4, and the position of the frame beam on the screw rods 4-4 is controlled by matching bolts. In the embodiment of the invention, more specifically, the top end of the temporary suspender 6 penetrates out of the through hole of the upper force-bearing frame 4-1 and is fastened by matching with the bolt 8, and the force-bearing change of the temporary suspender 6 is controlled by rotating the bolt 8.
In the embodiment of the invention, more specifically, the bracket 5 comprises a lower bearing frame 5-1, an inclined backing plate 5-2 welded on the upper side of the lower bearing frame 5-1, and a pair of positioning frames 5-3 welded on the upper side of the lower bearing frame 5-1, wherein openings are arranged on the positioning frames 5-3, the openings between the two positioning frames 5-3 form positioning channels sleeved on the cross beam 2, and the lower bearing frame 5-1 and the inclined backing plate 5-2 form a contact surface attached to the bottom side of the cross beam 2. In the embodiment of the invention, more specifically, the lower carrier 5-1 comprises a pair of parallel section steels and a pair of I-shaped steels welded between the pair of section steels; wherein, this shaped steel sets up with crossbeam 2 is perpendicular, and is equipped with on this shaped steel and is used for penetrating the locating hole of 6 tip of interim jib.
The invention carries out targeted design according to the basic structure of the arch bridge with a sling 3 structure, reasonably arranges the steel frame structure and mechanical stress of the saddle 4 and the bracket 5, can ensure the integral safety of the bridge arch beam in the cable replacing process and the secondary cable replacing process, does not influence the vehicle passing, ensures that the force transmission of the arch rib 1 and the main beam is clear, and has reasonable stress.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a steel pipe concrete arch bridge trades cable device for change the hoist cable of hoist cable structure arch bridge, its characterized in that, the device includes: the device comprises a saddle used for erecting on an arch rib of the arch bridge, a bracket used for supporting under a cross beam of the arch bridge, and a temporary suspension rod used for connecting the saddle and the bracket; the temporary suspension rod is used for tensioning and supporting the cross beam to replace the stress of the current sling, and the cable replacing device is detached after the replacement of the current sling is completed.
2. A steel pipe concrete arch bridge apparatus for changing cable according to claim 1, wherein the saddle frame comprises an upper carrier frame, a height-adjustable bracket welded to the lower side of the upper carrier frame, and a pair of operation frames welded to the lower side of the upper carrier frame, the through groove formed between the two operation frames is clamped to both sides of the arch rib, the upper carrier frame and the bracket form two contact surfaces to press on the arch rib, and the horizontal included angle of the upper carrier frame is controlled by adjusting the height of the bracket.
3. A concrete filled steel tube arch bridge cable replacement device as recited in claim 2, wherein said upper carrier comprises a pair of parallel section steels and a pair of i-beams welded between the pair of section steels; the section steel is perpendicular to the arch rib, and the section steel is provided with a positioning hole for penetrating the end part of the temporary hanging rod.
4. A concrete filled steel tube arch bridge cable replacing device as claimed in claim 3, wherein said support frame comprises a pair of screw rods vertically arranged on the lower side of the upper carrier frame, and a frame beam having through holes at both ends for respectively penetrating one of the screw rods, the position of the frame beam on the screw rods being controlled by cooperating bolts.
5. A steel pipe concrete arch bridge cable replacing device as recited in claim 1, wherein the bracket comprises a lower carrier, a diagonal pad welded to the upper side of the lower carrier, and a pair of positioning frames welded to the upper side of the lower carrier, the positioning frames are provided with openings, the openings between the two positioning frames form positioning channels sleeved on the cross beam, and the lower carrier and the diagonal pad form a contact surface attached to the bottom side of the cross beam.
6. The apparatus for replacing a cable in a concrete filled steel tube arch bridge as recited in claim 5, wherein said lower carrier comprises a pair of parallel section steels and a pair of i-beams welded between the pair of section steels; the section steel is perpendicular to the cross beam, and positioning holes for penetrating the end parts of the temporary hanging rods are formed in the section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537391.6A CN111576256A (en) | 2020-06-12 | 2020-06-12 | Steel pipe concrete arch bridge cable replacing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537391.6A CN111576256A (en) | 2020-06-12 | 2020-06-12 | Steel pipe concrete arch bridge cable replacing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111576256A true CN111576256A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010537391.6A Pending CN111576256A (en) | 2020-06-12 | 2020-06-12 | Steel pipe concrete arch bridge cable replacing device |
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| Country | Link |
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| CN (1) | CN111576256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113005927A (en) * | 2021-04-06 | 2021-06-22 | 厦门合诚工程技术有限公司 | Cable force conversion device for replacing suspender |
-
2020
- 2020-06-12 CN CN202010537391.6A patent/CN111576256A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113005927A (en) * | 2021-04-06 | 2021-06-22 | 厦门合诚工程技术有限公司 | Cable force conversion device for replacing suspender |
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