CN118127932A - A vertical step-by-step lifting and installation method for the tie beam of a large-span cross-channel tied arch bridge - Google Patents
A vertical step-by-step lifting and installation method for the tie beam of a large-span cross-channel tied arch bridge Download PDFInfo
- Publication number
- CN118127932A CN118127932A CN202410308641.7A CN202410308641A CN118127932A CN 118127932 A CN118127932 A CN 118127932A CN 202410308641 A CN202410308641 A CN 202410308641A CN 118127932 A CN118127932 A CN 118127932A
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- tie
- tie beam
- lifting
- rod
- rods
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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
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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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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a large-span cross-channel tie bar arch bridge tie beam vertical stepping lifting installation method, which comprises the following steps of: the tie beam connecting devices of the lifting devices are respectively connected with a tie beam pre-supporting connecting piece, the upper ends of the tie bars are connected with the arch ribs, and the tie beams are in a horizontal state at the moment; secondly, lifting the tie beam: extending the hollow jack, rotating the lower suspension nut to be abutted against the bottom wall, enabling the hollow jack to shrink, rotating the upper suspension nut to be abutted against the open center jack, and repeating the second step until the height of the tie beam meets the requirement; and thirdly, connecting the tie beam and the arch rib through a rope, and removing the lifting device from between the tie beam and the arch rib. The invention aims to have the advantages of being capable of conveniently and reliably lifting the position of the tie beam to meet the requirements, and solves the problem of high lifting cost caused by the fact that the existing lifting equipment is supported by the underwater lap joint support platform to lift the tie beam.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a vertical stepping lifting installation method for a tie bar arch bridge tie beam of a large-span cross-channel.
Background
The construction quality of the tie beam of the steel box tied arch bridge by the arch-first and beam-second method not only determines the line shape of the bridge and is closely related to the constant-load internal force of the structure. Therefore, it is necessary to determine a reasonable construction process so that the state at the time of bridge formation tends to the design state. The traditional method for hoisting the tie beam mainly comprises a bracket method and a large-scale floating crane method. The construction period of the bracket method is long, and the river channel needs to be continuously sealed, so that serious traffic damage is caused; the floating crane method has high requirements on the capacity of hoisting equipment and the external environment, the inclination angle of a suspension arm is limited during hoisting, and the safety, stability and construction quality are not easy to control, so that a high-quality and high-efficiency large-span cross-channel tie bar arch bridge tie beam hoisting method is needed.
Disclosure of Invention
The invention aims to provide a vertical stepping lifting installation method for a tie beam of a large-span cross-channel tied arch bridge, which can conveniently and reliably lift the position of the tie beam to meet the requirements, and solves the problem of high lifting cost caused by the fact that the existing underwater lap joint support platform supports lifting equipment to carry out tie beam lifting locks.
In order to achieve the above object, the present invention adopts the following technology: the tie bar arch bridge comprises arch ribs and tie bars, wherein the tie bars are provided with a plurality of tie bar prefabricated connecting pieces distributed along the extending direction of the tie bars, and the tie bar arch bridge is characterized by being lifted through a plurality of lifting devices, the lifting devices comprise tie bar connecting devices, vertical threaded rods, tie bar connecting frames positioned above the tie bar connecting devices, upwards telescopic hollow jacks connected to the tie bar connecting frames and tie bars with lower ends connected to the tie bar connecting frames, the lower ends of the hollow jacks are connected with the upper ends of connecting sleeves, bottom walls are arranged in the connecting sleeves, the lower ends of the vertical threaded rods are connected with the tie bar connecting devices, the upper ends of the vertical threaded rods sequentially penetrate through the connecting sleeves and the hollow jacks and are connected with upper suspension nuts, the upper suspension nuts are used for suspending the vertical threaded rods on the hollow jacks, the vertical threaded rods are in threaded connection with lower suspension nuts, and the lower suspension nuts are used for suspending on the bottom walls to suspend the vertical threaded rods on the connecting sleeves; the specific process for lifting the tie beam is as follows: step one, part connection: the method comprises the steps that an arch rib is erected, tie beams are sent to the lower portion of the arch rib through a ship, tie beam connecting devices of a plurality of lifting devices are respectively connected to one tie beam pre-supporting connecting piece, the distance between a tie rod connecting frame and the tie beam connecting devices is adjusted until a hollow jack is in a contracted state, when an upper suspension nut is suspended on the open jack, the upper end of the tie rod can be connected to the arch rib, the upper end of the tie rod is connected with the arch rib, the tie beams are in a horizontal state at the moment, and the lower suspension nut is adjusted to be abutted against the bottom wall; secondly, lifting the tie beam: extending the hollow jack by a set distance, rotating the lower suspension nut to be abutted against the bottom wall, enabling the hollow jack to shrink and reset, rotating the upper suspension nut to be abutted against the open center jack, and repeating the second step until the height of the tie beam meets the requirement; and thirdly, connecting the tie beam and the arch rib through a rope, and removing the lifting device from between the tie beam and the arch rib.
Preferably, the number of the vertical threaded rods is two, the two vertical threaded rods penetrate through the two hollow jacks in a one-to-one correspondence manner, and when the prefabricated connecting pieces of the homologous beams of the tie beam connecting device are connected together, the two vertical threaded rods are positioned on two sides of a vertical plane passing through the gravity center of the tie beam. The tie beam can be lifted without transverse inclination.
Preferably, the vertical threaded rod is located on either side of a vertical plane passing through the center of gravity of the tie beam. The tie beam can be lifted without transverse inclination.
Preferably, two of the vertically disposed threaded rods are located on both sides of the tie rod in the width direction of the tie rod.
Preferably, one of the lifting devices is provided with two tie bars, the two tie bars being distributed in the width direction of the tie beam.
Preferably, the tie bar connecting frame comprises an upper frame and a lower connecting plate, the hollow jack is connected to the upper frame, and the lower end of the connecting sleeve is connected with the lower connecting plate. The connection reliability can be improved.
Preferably, the tie bar is secured to both the upper and lower tie plates. The connection reliability is good.
Preferably, the tie bar is penetrated on the lower connecting plate, the lower end of the tie bar is provided with a large-diameter section, a holding step is formed between the large-diameter section and the tie bar, and the lower connecting plate is placed on the holding step. The connection is convenient.
Preferably, the tie bar connecting frame comprises an upper frame, the upper frame comprises two connecting rings, two upper transverse connecting rods connecting the two connecting rings together, two longitudinal connecting rods connecting the two ends of the upper transverse connecting rods together in a one-to-one correspondence manner, and two lower transverse connecting rods connecting the two longitudinal connecting rods together, the two hollow jacks penetrate through the two connecting rings in a one-to-one correspondence manner and are fixed with the connecting rings, two tie bars are arranged, one tie bar is fixed with one longitudinal connecting rod, one connecting ring, one end of the two upper transverse connecting rods and one end of the two lower transverse connecting rods, and the other tie bar is fixed with the other longitudinal connecting rod, the other connecting ring, the other end of the two upper transverse connecting rods and the other end of the two lower transverse connecting rods. The vertical lifting can be ensured more reliably during use.
Preferably, the adjacent tie beam connecting devices are connected together through a connecting rope, a rigid section is arranged in the middle of the connecting rope, the rigid section is connected with a hanging wire and a rigid rod extending downwards, the rigid rod is perpendicular to the rigid section, and the lower end of the hanging wire is connected with a pendant which enables the hanging wire to be in a straightening state. In the lifting process of the tie beam, if an included angle is formed between the rigid rod and the suspension line, the fact that the distance of each lifting device for lifting the tie beam deviates to enable the tie beam to incline is indicated, and at the moment, the lifting device with small lifting distance independently lifts the tie beam to enable the tie beam to recover to be horizontal. Whether inclination is generated in the lifting process of the tie beam or not and whether the tie beam is corrected to be horizontal or not can be conveniently known.
Preferably, the adjacent tie beam connecting devices are connected together through a connecting rope, a rigid section is arranged in the middle of the connecting rope, the rigid section is connected with a hanging wire and a downwardly extending rigid rod, the rigid rod is perpendicular to the rigid section, and the lower end of the hanging wire is connected with a pendant for enabling the hanging wire to be in a straightening state; in the lifting process of the tie beam, if an included angle is formed between the rigid rod and the suspension line, the distance for lifting the tie beam by each lifting device is deviated, so that the tie beam is inclined, and at the moment, the lifting devices with small lifting distances independently lift the tie beam, so that the tie beam is restored to be horizontal. Whether inclination is generated in the lifting process of the tie beam or not and whether the tie beam is corrected to be horizontal or not can be conveniently known. .
The invention has the following beneficial effects: the tie beam adopts an integral lifting installation process, and has the advantages of high precision, good structural integrity, good linear control, short construction period, easy quality assurance, simple and convenient construction, small influence on navigation, safety and reliability.
The construction speed is high: the hoisting process breaks through the traditional hoisting method of tie-bar arch bridge tie beams, the self-grinding hoisting system is convenient to install and operate, construction interference is small, the tie beams can be guaranteed to be fast and stably hoisted, and the hoisting and installing efficiency of the tie beams are guaranteed.
The construction quality is good: the formed arch rib is used as a bearing system, and the lifting points are uniformly arranged, so that the positioning is accurate, the stress state of the tie beam in the lifting and mounting process is close to the design state, and the deformation of the tie beam can be effectively controlled.
The economic and social benefits are obvious: and the transportation capacity of large members of the under-bridge channel is fully utilized by tie beam transportation, so that the transportation cost is effectively controlled. The in-situ hoisting effect range of the tie bars is small, so that the bridge approach part can be synchronously constructed, and meanwhile, the influence on channel traffic is reduced.
Drawings
FIG. 1 is a schematic view of the present invention as it is used to raise a tie beam;
FIG. 2 is a schematic view of a lifting device according to a first embodiment;
Fig. 3 is a partial schematic view of a second embodiment of the present invention.
In the figure: arch rib 1, tie beam 2, tie beam prefabricated connection 3, lifting device 4, longitudinal connection plate 5, transverse connection plate 6, tie beam connection device 7, vertical threaded rod 8, hollow jack 9, tie rod 10, connection sleeve 11, bottom wall 12, upper suspension nut 13, lower suspension nut 14, top plate 15, suspension lugs 16, suspension pin 17, operating platform 18, lower connection plate 19, large diameter section 20, connection ring 21, upper transverse connection rod 22, longitudinal connection rod 23, lower transverse connection rod 24, connection cable 25, rigid section 26, suspension wire 27, rigid rod 28, pendant 29, upper frame 30.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In a first embodiment, referring to fig. 1 and 2, a method for installing a tie beam of a long-span cross-channel tie-bar arch bridge in a vertically stepping lifting manner includes a rib 1 and tie beams 2 provided with a plurality of tie beam prefabricated connectors 3 distributed along the extending direction of the tie beams. The tie beam prefabricated connecting piece comprises two longitudinal connecting plates 5 which are welded together by the tie beam and are distributed transversely (the transverse bridge direction is transverse, and the longitudinal bridge direction is longitudinal) and a longitudinal connecting plate 6 which is welded together by the tie beam and is distributed longitudinally and is used for connecting the two longitudinal connecting plates together, and the longitudinal connecting plates are provided with shaft holes which extend transversely. Lifting the tie beam is performed by means of several lifting devices 4. The lifting device comprises a tie beam connecting device 7, a vertically arranged threaded rod 8, a tie rod connecting frame arranged above the tie beam connecting device, an upward telescopic hollow jack 9 connected to the tie rod connecting frame and a tie rod 10 with the lower end connected to the tie rod connecting frame. The lower end of the hollow jack is connected with the upper end of a connecting sleeve 11, a bottom wall 12 is arranged in the connecting sleeve, and the lower end homologous beam connecting device of the vertical threaded rod is connected together. The upper end of the vertical threaded rod sequentially passes through the connecting sleeve and the hollow jack and then is connected with an upper suspension nut 13, and the upper suspension nut is used for suspending the vertical threaded rod on the hollow jack. The vertical threaded rod is threadedly connected to a lower suspension nut 14 for suspending the vertical threaded rod from the connecting sleeve by suspending it from the bottom wall. The tie beam connecting device comprises a top plate 15 and two pairs of hanging lugs connected to the lower surface of the top plate and provided with hanging holes, a connecting gap is formed between the two hanging lugs 16 of the same pair of hanging lugs, two longitudinal connecting plates are correspondingly penetrated in the telescopic gaps of the two pairs of hanging lugs one by one, and two hanging pins 17 correspondingly penetrated in the telescopic shaft holes of the two longitudinal connecting plates and the hanging holes of the two pairs of hanging lugs one by one connect the hanging lugs with the longitudinal connecting plates. The lifting device is also provided with an operating platform 18.
The number of the vertically arranged threaded rods is two. The two vertical threaded rods penetrate through the two hollow jacks in a one-to-one correspondence manner, and are positioned on two sides of a vertical plane passing through the gravity center of the tie beam when the tie beam connecting device is connected with the prefabricated connecting piece of the tie beam. The two vertical threaded rods are positioned on two sides of the tie rod along the width direction of the tie rod. One lifting device is provided with two tie bars distributed in the width direction of the tie beam. The tie bar connecting frame comprises an upper frame 30 and a lower connecting plate 19, the hollow jack is connected with the upper frame, and the lower end of the connecting sleeve is connected with the lower connecting plate. The tie bar is arranged on the lower connecting plate in a penetrating way, the lower end of the tie bar is provided with a large-diameter section 20, a holding step is formed between the large-diameter section and the tie bar, and the lower connecting plate is placed on the holding step. The upper frame comprises two connecting rings 21, two upper transverse connecting rods 22 for connecting the two connecting rings together, two longitudinal connecting rods 23 for connecting the two ends of the upper transverse connecting rods together in a one-to-one correspondence manner, and two lower transverse connecting rods 24 for connecting the two longitudinal connecting rods together, wherein two hollow jacks are arranged in the two connecting rings in a penetrating manner in a one-to-one correspondence manner and are fixed with the connecting rings (such as fixed by welding), one root rod is fixed with one longitudinal connecting rod, one connecting ring, one end of the two upper transverse connecting rods and one end of the two lower transverse connecting rods, and the other root rod, the tie rod, the other longitudinal connecting rods, the other connecting ring, the other ends of the two upper transverse connecting rods and the other ends of the two lower transverse connecting rods are fixed together.
The specific process for lifting the tie beam is as follows: step one, part connection: the method comprises the steps that an arch rib is erected, tie bars are sent to the lower portion of the arch rib through a ship, tie bar connecting devices of a plurality of lifting devices are respectively connected to one tie bar pre-supporting connecting piece on the tie bars, the distance between a tie bar connecting frame and the tie bar connecting devices is adjusted until a hollow jack is in a contracted state, when an upper suspension nut is suspended on the open jack, the upper ends of tie bars can be connected to the arch rib, the upper ends of the tie bars are connected with the arch rib, and the tie bars are in a horizontal state; secondly, lifting the tie beam: extending the hollow jack, rotating the lower suspension nut to be abutted against the bottom wall, enabling the hollow jack to shrink, rotating the upper suspension nut to be abutted against the open center jack, and repeating the second step until the height of the tie beam meets the requirement; and thirdly, connecting the tie beam and the arch rib through a rope, and removing the lifting device from between the tie beam and the arch rib.
Embodiment two differs from embodiment one in that: the adjacent tie beam connecting devices are connected together through a connecting rope 25, a rigid section 26 with a linear structure is arranged in the middle of the connecting rope, the rigid section is connected with a hanging wire 27 and a rigid rod 28 extending downwards, the rigid rod is perpendicular to the rigid section, and the lower end of the hanging wire is connected with a pendant 29 which enables the hanging wire to be in a straightening state. In the lifting process of the tie beam, if an included angle is formed between the rigid rod and the sling, the fact that the distance of each lifting device for lifting the tie beam deviates to enable the tie beam to incline is indicated, and at the moment, the lifting device with small lifting distance independently lifts the tie beam to enable the tie beam to recover to be horizontal.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308641.7A CN118127932A (en) | 2024-03-18 | 2024-03-18 | A vertical step-by-step lifting and installation method for the tie beam of a large-span cross-channel tied arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410308641.7A CN118127932A (en) | 2024-03-18 | 2024-03-18 | A vertical step-by-step lifting and installation method for the tie beam of a large-span cross-channel tied arch bridge |
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| Publication Number | Publication Date |
|---|---|
| CN118127932A true CN118127932A (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410308641.7A Pending CN118127932A (en) | 2024-03-18 | 2024-03-18 | A vertical step-by-step lifting and installation method for the tie beam of a large-span cross-channel tied arch bridge |
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| CN (1) | CN118127932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119319441A (en) * | 2024-11-29 | 2025-01-17 | 上海电气风电集团股份有限公司 | Assembly method and assembly tool for driving chain of wind driven generator |
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| CN1811070A (en) * | 2005-01-28 | 2006-08-02 | 上海市第七建筑有限公司 | First-arch-then-beam concrete steel skeleton constructing process for through arch bridge with mooring post of steel pipe concrete |
| JP2016023449A (en) * | 2014-07-18 | 2016-02-08 | オックスジャッキ株式会社 | PC steel strand winding device |
| CN113152313A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Suspender replacing structure of tied arch bridge and construction method thereof |
| CN218320177U (en) * | 2022-06-15 | 2023-01-17 | 江苏法尔胜缆索有限公司 | Temporary horizontal tie bar cable span middle section lifting device for through arch bridge |
| CN222275268U (en) * | 2024-03-18 | 2024-12-31 | 浙江交工金筑交通建设有限公司 | A vertical step-by-step lifting structure for the tie beam of a large-span tied arch bridge across a waterway |
-
2024
- 2024-03-18 CN CN202410308641.7A patent/CN118127932A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811070A (en) * | 2005-01-28 | 2006-08-02 | 上海市第七建筑有限公司 | First-arch-then-beam concrete steel skeleton constructing process for through arch bridge with mooring post of steel pipe concrete |
| JP2016023449A (en) * | 2014-07-18 | 2016-02-08 | オックスジャッキ株式会社 | PC steel strand winding device |
| CN113152313A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Suspender replacing structure of tied arch bridge and construction method thereof |
| CN218320177U (en) * | 2022-06-15 | 2023-01-17 | 江苏法尔胜缆索有限公司 | Temporary horizontal tie bar cable span middle section lifting device for through arch bridge |
| CN222275268U (en) * | 2024-03-18 | 2024-12-31 | 浙江交工金筑交通建设有限公司 | A vertical step-by-step lifting structure for the tie beam of a large-span tied arch bridge across a waterway |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119319441A (en) * | 2024-11-29 | 2025-01-17 | 上海电气风电集团股份有限公司 | Assembly method and assembly tool for driving chain of wind driven generator |
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