CN112064517B - Jacking device and method for short-tower cable-stayed bridge - Google Patents
Jacking device and method for short-tower cable-stayed bridge Download PDFInfo
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- CN112064517B CN112064517B CN202011113291.7A CN202011113291A CN112064517B CN 112064517 B CN112064517 B CN 112064517B CN 202011113291 A CN202011113291 A CN 202011113291A CN 112064517 B CN112064517 B CN 112064517B
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- jacking device
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- stayed bridge
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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
Abstract
The invention provides a jacking device of a short-tower cable-stayed bridge, which comprises a base and a top seat, wherein a plurality of jacks are detachably arranged on the base along the horizontal direction, the upper ends of the jacks are detachably connected with the top seat, and a guide limiting assembly is arranged between the top seat and the base; a plurality of first anti-moving top plates are arranged on the top seat at intervals along the horizontal direction, door-shaped supporting plates are arranged on the top seat at the periphery of the first anti-moving top plates, and a plurality of second anti-moving top plates are arranged at intervals along the horizontal direction on the tops of the door-shaped supporting plates; when the jacking device is used, a double-layer jacking method is adopted, a plurality of stress points are added, the stress points are prevented from being damaged due to single stress point, in addition, the offset phenomenon is not easy to occur in the jacking process, and the jacking effect is ensured.
Description
Technical Field
The invention relates to a jacking device, in particular to a jacking device and method for a short-tower cable-stayed bridge.
Background
The short-tower cable-stayed bridge is a cable-stayed combined system bridge between a continuous beam and a cable-stayed bridge and has the characteristics of short tower, rigid beam and concentrated cable. Compared with a continuous beam, the short-tower cable-stayed bridge has the advantages of novel structure, large spanning capacity, simple construction, economy and the like; compared with a cable-stayed bridge, the cable-stayed bridge has the advantages of convenience in construction, material saving, high rigidity of the main beam and the like. Therefore, the short-tower cable-stayed bridge has wide development space.
In short tower cable-stay bridge work progress, can be used to the jacking device usually, current jacking device when using, generally directly sets up on the cushion cap, then directly carries out the jacking to main mound, and the stress point is comparatively single, easily leads to main mound stress point to receive the damage, and takes place the skew phenomenon easily, is not convenient for use.
Disclosure of Invention
The invention aims to provide a short-tower cable-stayed bridge jacking device and a method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a jacking device of a short-tower cable-stayed bridge comprises a base and a top seat, wherein a plurality of jacks are detachably arranged on the base along the horizontal direction, the upper ends of the jacks are detachably connected with the top seat, and a guide limiting assembly is arranged between the top seat and the base;
the top seat is provided with a plurality of first anti-moving top plates at intervals along the horizontal direction, the top seat on the periphery of the first anti-moving top plates is provided with a door-shaped supporting plate, and the top of the door-shaped supporting plate is provided with a plurality of second anti-moving top plates at intervals along the horizontal direction.
As a further scheme of the invention: the base is provided with a fixed sleeve matched with the jack, a fixed bolt penetrates through the fixed sleeve along the horizontal direction, and the jack is provided with a fixed hole matched with the fixed bolt; the jack is detachably connected with the base through the mutual matching of the fixing sleeve, the fixing bolt and the fixing hole.
As a further scheme of the invention: the jack base is provided with a positioning sleeve matched with the jack, a limiting bolt penetrates through the positioning sleeve along the horizontal direction, and a limiting hole matched with the limiting bolt is formed in the jack; the jack is detachably connected with the top seat through the matching of the positioning sleeve, the limiting bolt and the limiting hole.
As a further scheme of the invention: the guide limiting assembly comprises guide rods arranged at the bottom of the top seat in parallel and at intervals, guide supports corresponding to the guide rods one to one are arranged on the base, the guide rods movably penetrate through the corresponding guide supports along the vertical direction, and limiting plates are arranged at the lower ends of the guide rods.
As a further scheme of the invention: the guide support is of a door-shaped structure and movably penetrates through the limiting plate along the vertical direction, and a buffer spring is correspondingly sleeved on the guide support on the lower side of the limiting plate.
As a further scheme of the invention: an arc-shaped groove is formed in the first anti-moving top plate, and an anti-moving column arranged in the vertical direction is arranged in the arc-shaped groove; the structure of the second anti-moving top plate is the same as that of the first anti-moving top plate.
A method for jacking a short-tower cable-stayed bridge comprises the following steps:
drilling two rows of through holes on a main pier of the short-tower cable-stayed bridge, wherein the number and the position of the through holes in one row are matched with the number and the position of a first anti-moving top plate in a jacking device, and the number and the position of the through holes in the other row are matched with the number and the position of a second anti-moving top plate in the jacking device;
step two, penetrating lifting rods into the through holes, wherein two ends of each lifting rod are positioned outside the through holes;
the lifting rod is matched with the arc-shaped groove, and anti-moving holes matched with the anti-moving columns are formed in the two ends of the lifting rod;
step three, mounting jacking devices on short tower cable-stayed bridge bearing platforms at two ends of the lifting rod;
step four, adjusting each jacking device to ensure that a first anti-moving top plate and a second anti-moving top plate in each jacking device are in contact with corresponding lifting rods, and the anti-moving columns are inserted into corresponding anti-moving holes;
step five, cutting off the main pier below the lifting rod at the bottommost layer;
and sixthly, lifting the two ends of each lifting rod through the matching of the jacks, so as to lift the main pier.
Compared with the prior art, the invention has the beneficial effects that:
after the structure is adopted, the first anti-moving top plates, the door-shaped supporting plate, the second anti-moving top plates, the arc-shaped grooves and the anti-moving columns are matched with one another, and when the anti-moving device is used, a double-layer jacking method is adopted, so that a plurality of stress points are increased, and the stress points are prevented from being single and damaged. Moreover, in the jacking process, the phenomenon of offset is not easy to occur, and the jacking effect is ensured.
By adopting the method, the main pier is directly lifted, the contact between the jacking device and the bridge is avoided, the influence on the bridge can be reduced, and the safety is improved. And, in the jacking process, simple structure, easily operation, convenient to use improves work efficiency greatly.
Drawings
Fig. 1 is a schematic structural diagram of a short-tower cable-stayed bridge jacking device and a method thereof.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a using state diagram of a short tower cable-stayed bridge jacking device and a method thereof.
In the figure: 1. a base; 2. a top seat; 3. a jack; 4. a guide limit component; 401. a guide bar; 402. a guide bracket; 403. a limiting plate; 404. a buffer spring; 5. a first anti-shifting top plate; 6. a gate-shaped support plate; 7. a second anti-movement top plate; 8. fixing a sleeve; 9. fixing the bolt; 10. a positioning sleeve; 11. a limit bolt; 12. an arc-shaped groove; 13. prevent moving the post.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-3, a jacking device for a short-tower cable-stayed bridge comprises a base 1 and a footstock 2, wherein a plurality of jacks 3 are detachably arranged on the base 1 along the horizontal direction, the upper ends of the jacks 3 are detachably connected with the footstock 2, and a guide limiting assembly 4 is arranged between the footstock 2 and the base 1; be equipped with a plurality of first roof 5 of preventing moving along the horizontal direction interval on footstock 2, first prevent moving and be equipped with door type backup pad 6 on the 5 outlying footstock 2 of roof, the top of door type backup pad 6 is equipped with a plurality of seconds along the horizontal direction interval and prevents moving roof 7. Through each first roof 5, the door type backup pad 6 and each second roof 7 of preventing moving that prevent moving that set up, when using, adopt double-deck jacking method, increase a plurality of stress points, avoid stress point single and receive the damage.
The base 1 is provided with a fixing sleeve 8 matched with the jack 3, the fixing sleeve 8 is provided with a fixing bolt 9 in a penetrating manner along the horizontal direction, and the jack 3 is provided with a fixing hole matched with the fixing bolt 9; the jack 3 is detachably connected with the base 1 through the mutual matching of the fixed sleeve 8, the fixed bolt 9 and the fixed hole. The top seat 2 is provided with a positioning sleeve 10 matched with the jack 3, a limiting bolt 11 penetrates through the positioning sleeve 10 along the horizontal direction, and the jack 3 is provided with a limiting hole matched with the limiting bolt 11; the jack 3 is detachably connected with the top seat 2 through the matching of the locating sleeve 10, the limiting bolt 11 and the limiting hole. The jack 3 is vulnerable to damage because a large jacking force needs to be applied during jacking. Through mutually supporting of fixed cover 8, fixing bolt 9, position sleeve 10 and spacing bolt 11, can conveniently carry out dismouting, change, simple structure, the operation of being convenient for jack 3.
In addition, the guide limiting assembly 4 comprises guide rods 401 arranged at the bottom of the top seat 2 in parallel at intervals, guide supports 402 corresponding to the guide rods 401 one to one are arranged on the base 1, each guide rod 401 movably penetrates through the corresponding guide support 402 along the vertical direction, a limiting plate 403 is arranged at the lower end of each guide rod 401, the top seat 2 can be guided and limited, and the top seat 2 can only move under the action of the jack 3.
Further, the guide bracket 402 is of a door-shaped structure and penetrates through the limit plate 403 along the vertical direction, and a buffer spring 404 is correspondingly sleeved on the guide bracket 402 on the lower side of the limit plate 403 and can buffer the limit plate 403, so that the footstock 2 is buffered.
Preferably, the first anti-moving top plate 5 is provided with an arc-shaped groove 12, and an anti-moving column 13 arranged along the vertical direction is arranged in the arc-shaped groove 12; the structure of the second anti-moving top plate 7 is the same as that of the first anti-moving top plate 5, so that the phenomenon of offset in the jacking process can be prevented.
A method for jacking a short-tower cable-stayed bridge comprises the following steps:
drilling two rows of through holes on a main pier of the short-tower cable-stayed bridge, wherein the number and the position of the through holes in one row are matched with the number and the position of a first anti-moving top plate 5 in a jacking device, and the number and the position of the through holes in the other row are matched with the number and the position of a second anti-moving top plate 7 in the jacking device;
step two, penetrating lifting rods into the through holes, wherein two ends of each lifting rod are positioned outside the through holes;
the lifting rod is matched with the arc-shaped groove 12, and anti-moving holes matched with the anti-moving columns 13 are formed in the two ends of the lifting rod;
step three, mounting jacking devices on short tower cable-stayed bridge bearing platforms at two ends of the lifting rod;
step four, adjusting each jacking device to ensure that the first anti-moving top plate 5 and the second anti-moving top plate 7 in each jacking device are in contact with the corresponding lifting rod, and the anti-moving columns 13 are inserted into the corresponding anti-moving holes;
step five, cutting off the main pier below the lifting rod at the bottommost layer;
and sixthly, lifting the two ends of each lifting rod through the matching of the jacks 3, so as to lift the main pier.
The working principle of the invention is as follows: two rows of through holes are drilled on a main pier of the short-tower cable-stayed bridge, wherein the number and the position of the through holes in one row are matched with the number and the position of a first anti-moving top plate 5 in the jacking device, and the number and the position of the through holes in the other row are matched with the number and the position of a second anti-moving top plate 7 in the jacking device. Then, a lifting rod penetrates into each through hole, and two ends of each lifting rod are positioned outside the through holes. And then, installing jacking devices on the short tower cable-stayed bridge bearing platforms at the two ends of the lifting rod. And, adjust each jacking device, ensure that first prevent moving roof 5 and second prevent moving roof 7 in each jacking device and contact with corresponding lifting rod, and prevent moving post 13 and insert in the corresponding hole of preventing moving. The main pier below the bottommost layer lifting rod is then truncated. And finally, lifting the two ends of each lifting rod by matching each jack 3, thereby jacking the main pier.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. A jacking device of a short-tower cable-stayed bridge comprises a base (1) and a top seat (2), and is characterized in that a plurality of jacks (3) are detachably arranged on the base (1) along the horizontal direction, the upper ends of the jacks (3) are detachably connected with the top seat (2), and a guide limiting assembly (4) is arranged between the top seat (2) and the base (1);
a plurality of first anti-moving top plates (5) are arranged on the top seat (2) at intervals along the horizontal direction, door-shaped supporting plates (6) are arranged on the top seat (2) at the periphery of the first anti-moving top plates (5), and a plurality of second anti-moving top plates (7) are arranged at the top of the door-shaped supporting plates (6) at intervals along the horizontal direction;
an arc-shaped groove (12) is formed in the first anti-moving top plate (5), and an anti-moving column (13) arranged in the vertical direction is arranged in the arc-shaped groove (12); the structure of the second anti-moving top plate (7) is the same as that of the first anti-moving top plate (5).
2. The jacking device for the short-tower cable-stayed bridge, as claimed in claim 1, wherein the base (1) is provided with a fixing sleeve (8) adapted to the jack (3), a fixing bolt (9) is horizontally arranged on the fixing sleeve (8), and the jack (3) is provided with a fixing hole adapted to the fixing bolt (9); the jack (3) is detachably connected with the base (1) through the mutual matching of the fixed sleeve (8), the fixed bolt (9) and the fixed hole.
3. The jacking device for the short-tower cable-stayed bridge according to claim 1, wherein a positioning sleeve (10) matched with the jack (3) is arranged on the jacking seat (2), a limiting bolt (11) penetrates through the positioning sleeve (10) along the horizontal direction, and a limiting hole matched with the limiting bolt (11) is formed in the jack (3); the jack (3) is detachably connected with the top seat (2) through the matching of the locating sleeve (10), the limiting bolt (11) and the limiting hole.
4. The short tower cable-stayed bridge jacking device according to claim 1, wherein the guide limiting assembly (4) comprises guide rods (401) which are arranged at the bottom of the top seat (2) in parallel and at intervals, guide brackets (402) which correspond to the guide rods (401) one by one are arranged on the base (1), each guide rod (401) movably penetrates through the corresponding guide bracket (402) along the vertical direction, and a limiting plate (403) is arranged at the lower end of each guide rod (401).
5. The short tower cable-stayed bridge jacking device according to claim 4, wherein the guide bracket (402) is of a door-shaped structure and vertically movably penetrates through the limiting plate (403), and the guide bracket (402) on the lower side of the limiting plate (403) is correspondingly sleeved with the buffer spring (404).
6. The method for jacking the device of the short tower cable-stayed bridge according to any one of claims 1 to 5, wherein the method comprises the following steps:
drilling two rows of through holes on a main pier of the short-tower cable-stayed bridge, wherein the number and the position of the through holes in one row are matched with the number and the position of a first anti-moving top plate (5) in a jacking device, and the number and the position of the through holes in the other row are matched with the number and the position of a second anti-moving top plate (7) in the jacking device;
step two, penetrating lifting rods into the through holes, wherein two ends of each lifting rod are positioned outside the through holes;
the lifting rod is adapted to the arc-shaped groove (12), and anti-moving holes adapted to the anti-moving columns (13) are formed in the two ends of the lifting rod;
step three, mounting jacking devices on short tower cable-stayed bridge bearing platforms at two ends of the lifting rod;
step four, adjusting each jacking device to ensure that a first anti-moving top plate (5) and a second anti-moving top plate (7) in each jacking device are in contact with corresponding lifting rods, and anti-moving columns (13) are inserted into corresponding anti-moving holes;
step five, cutting off the main pier below the lifting rod at the bottommost layer;
and sixthly, lifting the two ends of each lifting rod through the matching of the jacks (3), so as to lift the main pier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011113291.7A CN112064517B (en) | 2020-10-17 | 2020-10-17 | Jacking device and method for short-tower cable-stayed bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011113291.7A CN112064517B (en) | 2020-10-17 | 2020-10-17 | Jacking device and method for short-tower cable-stayed bridge |
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| CN112064517A CN112064517A (en) | 2020-12-11 |
| CN112064517B true CN112064517B (en) | 2021-10-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112813831A (en) * | 2020-12-28 | 2021-05-18 | 中铁隧道集团一处有限公司 | Limiting and overturning preventing device for supporting system of bridge aerial work platform and construction method |
| CN112982475B (en) * | 2021-03-04 | 2022-09-02 | 衡水衡源电力建设有限责任公司 | Auxiliary mounting tool for prefabricated foundation of power transmission line |
| CN113005919A (en) * | 2021-04-23 | 2021-06-22 | 浙江数智交院科技股份有限公司 | Pier construction device and pier construction method |
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| KR20090100476A (en) * | 2008-03-20 | 2009-09-24 | 구일건설(주) | A bridge lifting apparatus and bridge lifting method using the same |
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