CN111155446A - Bridge body trackless sliding system and construction method thereof - Google Patents
Bridge body trackless sliding system and construction method thereof Download PDFInfo
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- CN111155446A CN111155446A CN202010056213.1A CN202010056213A CN111155446A CN 111155446 A CN111155446 A CN 111155446A CN 202010056213 A CN202010056213 A CN 202010056213A CN 111155446 A CN111155446 A CN 111155446A
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- continuous displacement
- displacement device
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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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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Abstract
The invention discloses a trackless sliding system of a bridge body and a construction method thereof. The construction method comprises the following steps: step 1, preparing sliding construction, assembling a platform, a temporary pier and a guide beam; step 2, hoisting the new beam section to the assembly platform; step 3, completing the connection of the new hoisting beam section and the existing beam section; step 4, sliding the whole body forwards to a design position; and 5, repeating the steps 2-4 until all the beam sections are installed in place. The method can effectively realize smooth sliding of the moved box girder by any plane curve, reduces the construction difficulty of the box girder and improves the construction efficiency and precision, and the construction method is simple, convenient and easy to operate, strong in practicability and suitable for being widely popularized and introduced in the technical field.
Description
Technical Field
The invention belongs to the technical field of bridge body installation and construction, and particularly relates to a bridge body trackless sliding system and a construction method thereof.
Background
The traditional bridge body construction generally adopts a jacking method, and the method is suitable for both steel beams and concrete beams. The construction of the pushing method is that a prefabricated field is arranged behind a bridge abutment along the axial direction of a bridge, and a steel guide beam, a temporary pier, a slideway and a horizontal jack force application device are arranged. The concrete beam pushing construction steps are as follows: the concrete beam sections are prefabricated in sections, the concrete beam sections are connected into a whole by longitudinal prestressed tendons, the beam is jacked (pulled out) section by section, then the next beam section is continuously cast on a narrow beam-making pedestal, and the construction method of repeated cycle construction is the jacking construction method.
The traditional pushing method construction of the bridge body needs to continuously push the bridge body, horizontal thrust is generated on the bridge pier, meanwhile, the construction direction is single, the poured beam section cannot move along a curve, limitation is large, and based on the defects, the technical personnel in the field improve the traditional pushing method construction of the bridge body, namely, the traditional walking type pushing method is suitable for the prior art, the method is improved on the basis of the traditional continuous pushing, and the horizontal thrust generated on the bridge pier by the traditional continuous pushing is overcome. The movable butt joint of the bridge body and the beam section is realized by adopting a walking type pushing device, as shown in fig. 4 and 5, the walking type pushing device comprises a base, a translation pushing support platform is arranged on the top surface of the base, a jacking support oil cylinder is arranged on the base, and a longitudinal pushing device for the longitudinal movement of the translation pushing support platform and a transverse pushing device for the transverse movement of the translation pushing support platform are arranged on the base or the translation pushing support platform. The lifting and the movement along the bridge direction can be realized, and the adjustment along the transverse bridge direction can also be realized simultaneously so as to adapt to the linear and gradient requirements of different bridge types and different directions. However, the walking pushing method for the bridge body has the following limitations.
1. Temporary supports are required to be arranged on the temporary piers, and support cushions are usually required to be arranged on the tops of the temporary supports. Theoretically, the temporary support on each temporary pier increases with the incremental length of the box girder, and if the height of the support cushion is not adjusted in time, the support gives an initial displacement to the box girder, which may cause the girder to generate a large internal force. When the pushing design is carried out, the internal force caused by the height difference of the support pad at the temporary support seat is difficult to accurately consider; during construction, the requirements on construction management are high. Therefore, in recent years, the walking pushing construction is adopted to cause defects of the beam body structure.
2. The horizontal pushing distance of the walking type pushing single pushing is limited by the stroke of the jack, the box girder needs to be repeatedly jacked and dropped during construction, and the difficulty in synchronous control of the jack is high. In addition, most walking-type pushing bridges are hollow thin-wall structures such as steel box girders, steel-concrete combined box girders and concrete box girders. The local stability problem of the beam body is particularly prominent in the construction process.
3. For a bridge with a horizontal curve and a longitudinal curve, the walking type pushing can only be a section of straight line each time, and when the beam body turns along the curve, only a small straight line section can be used for fitting the curve, so that the construction control difficulty is high, and the deviation correction is needed after a distance is often pushed.
Therefore, designing a system for a bridge body without rail sliding and a construction method thereof to simplify the construction steps of the bridge body, improve the construction efficiency, reduce the difficulty of construction management, and reduce temporary facilities used in construction becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a non-rail sliding system for bridge and its construction method are provided to solve at least one of the above technical problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a bridge beam body does not have track system of sliding, includes interim buttress, a plurality of is located be used for supporting the bridge beam body of waiting to slide and drive the continuous displacement device who waits to slide the arbitrary angle of bridge beam body level and smoothly slide on the interim buttress, and with continuous displacement device connects and is used for control the central control room of continuous displacement device operation.
Furthermore, the continuous displacement device comprises a continuous displacement device main body, a height adjusting oil cylinder arranged at the bottom of the continuous displacement device main body and used for adjusting the height of the continuous displacement device main body, and a continuous displacement mechanism arranged at the top of the continuous displacement device main body and used for driving the bridge body to be slid to smoothly slide at any horizontal angle; the continuous displacement device main body is connected with the temporary buttress through the height adjusting oil cylinder, and the central control room is respectively connected with the height adjusting oil cylinder and the continuous displacement mechanism.
Furthermore, the continuous displacement device also comprises an angle adjusting mechanism which is arranged in the continuous displacement device main body and used for driving the continuous displacement mechanism to rotate horizontally at any angle, and the central control room is connected with the angle adjusting mechanism.
Further, the angle adjusting mechanism is a servo motor.
Further, the continuous displacement mechanism comprises a roller arranged on the continuous displacement device main body through a rotating shaft and a crawler arranged on the roller, wherein the crawler is directly contacted with the bridge body to be slipped and drives the bridge body to be slipped to run through friction force between the roller and the bridge body to be slipped.
Further, the rotating shaft, the roller and the crawler are driven to operate in sequence.
Furthermore, the central control room is connected with a motor for driving the rotating shaft to operate.
And furthermore, temporary support columns for temporarily supporting the bridge body to be slipped are further arranged on the temporary buttresses.
A construction method of a bridge body trackless sliding system comprises the following steps:
step 1, preparing sliding construction, assembling a platform, a temporary pier and a guide beam;
step 3, completing the connection of the new hoisting beam section and the existing beam section;
step 4, sliding the whole body forwards to a design position;
and 5, repeating the steps 2-4 until all the beam sections are installed in place.
Compared with the prior art, the invention has the following beneficial effects:
the bridge beam body construction method is simple in structure, scientific and reasonable in design and convenient to use, can effectively simplify the bridge beam body construction steps, improves construction efficiency, reduces construction management difficulty, and can effectively reduce temporary facilities used in construction.
The invention can effectively improve the stress condition of the bridge body, the matched temporary structure and the like in the construction process, and improve the construction quality of the bridge body and the reliability of safety management;
the invention ensures that the bridge beam body can smoothly slide and move along the curve required by the design when needing to move along the flat curve or the longitudinal curve, and is more suitable for the installation and construction of the bridge beam body under complex conditions.
The invention can better realize the automatic and intelligent management of construction. The construction method can effectively reduce the investment of managers, reduce the cost and improve the construction safety while accelerating the construction speed. Compared with the traditional method, the method is more suitable for bridge construction containing flat and curved lines.
The invention has higher construction reliability. Even if some continuous displacement devices suddenly lose power due to accidents, the central control room can also ensure normal construction or enable the box girder to smoothly stop moving by controlling the residual continuous displacement devices, and the safety of the girder body in the moving process is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a trackless glide system of a bridge body.
FIG. 2 is a schematic structural diagram of the continuous displacement apparatus of the present invention.
FIG. 3 is a block diagram of a central control room control system according to the present invention.
Fig. 4 is a layout diagram of the walking-type pushing method.
FIG. 5 is a view showing the structure of the walking type pushing apparatus.
Wherein, the names corresponding to the reference numbers are:
the method comprises the following steps of 1-temporary buttress, 2-continuous displacement device, 3-central control room, 4-bridge body to be slipped, 5-temporary support column, 21-continuous displacement device main body, 22-height adjusting oil cylinder, 23-continuous displacement mechanism, 24-angle adjusting mechanism, 25-roller, 26-crawler and 27-rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-3, the trackless sliding system for the bridge body provided by the invention has the advantages of simple structure, scientific and reasonable design and convenience in use, can effectively simplify the construction steps of the bridge body, improve the construction efficiency, reduce the construction management difficulty, and simultaneously can effectively reduce temporary facilities used in construction. The device comprises a temporary buttress 1, a plurality of continuous displacement devices 2 which are arranged on the temporary buttress 1 and used for supporting a bridge body to be slipped and driving a bridge body 4 to be slipped to smoothly slip at any horizontal angle, and a central control room 3 which is connected with the continuous displacement devices 2 and used for controlling the continuous displacement devices 2 to operate. And the temporary buttress column 5 for temporarily supporting the bridge body to be slipped is also arranged on the temporary buttress 1.
The continuous displacement device 2 comprises a continuous displacement device main body 21, a height adjusting oil cylinder 22 arranged at the bottom of the continuous displacement device main body 21 and used for adjusting the height of the continuous displacement device main body 21, and a continuous displacement mechanism 23 arranged at the top of the continuous displacement device main body 21 and used for driving a bridge body 4 to be slid to smoothly slide at any horizontal angle; the continuous displacement device main body 21 is connected with the temporary buttress 1 through the height adjusting oil cylinder 22, and the central control room 3 is respectively connected with the height adjusting oil cylinder 22 and the continuous displacement mechanism 23. The continuous displacement device 2 further comprises an angle adjusting mechanism 24 arranged in the continuous displacement device main body 21 and used for driving the continuous displacement mechanism 23 to rotate horizontally at any angle, and the central control room 3 is connected with the angle adjusting mechanism 24. The angle adjusting mechanism 24 is a servo motor.
The continuous displacement mechanism 23 comprises a roller 25 mounted on the continuous displacement device main body 21 through a rotating shaft 27, and a crawler belt 26 mounted on the roller 25, wherein the crawler belt 26 is directly contacted with the bridge body to be slipped and drives the bridge body to be slipped to run through the friction force between the two. The rotating shaft 27, the roller 25 and the crawler 26 are driven to operate sequentially. The central control room 3 is connected with a motor for driving the rotating shaft 27 to operate.
The invention can effectively improve the stress condition of the bridge body, the matched temporary structure and the like in the construction process, and improve the construction quality of the bridge body and the reliability of safety management;
the invention ensures that the bridge beam body can smoothly slide and move along the curve required by the design when needing to move along the flat curve or the longitudinal curve, and is more suitable for the installation and construction of the bridge beam body under complex conditions.
The invention has higher construction reliability. Even if some continuous displacement devices suddenly lose power due to accidents, the central control room can also ensure normal construction or enable the box girder to smoothly stop moving by controlling the residual continuous displacement devices, and the safety of the girder body in the moving process is greatly improved.
The invention provides a construction method of a bridge body trackless sliding system, which comprises the following steps:
step 1, preparing sliding construction, assembling a platform, a temporary pier and a guide beam;
step 3, completing the connection of the new hoisting beam section and the existing beam section;
step 4, sliding the whole body forwards to a design position;
and 5, repeating the steps 2-4 until all the beam sections are installed in place.
The invention can better realize the automatic and intelligent management of construction. The construction method can effectively reduce the investment of managers, reduce the cost and improve the construction safety while accelerating the construction speed. Compared with the traditional method, the method is more suitable for bridge construction containing flat and curved lines.
The walking type pushing method is that a horizontal jack is adopted to realize the horizontal movement of the box girder, and the distance of each horizontal displacement is limited by the stroke of the jack; the invention adopts the continuous displacement device capable of continuously displacing to drive the box girder to horizontally move, can effectively realize the sliding of the box girder in any designed plane curve, and can not only effectively reduce the construction difficulty but also effectively improve the construction precision compared with the traditional walking type pushing method.
Each contact point of the continuous displacement device and the box girder can output power to move the girder body (an active displacement point) and can be passively driven by the girder body to be taken as a sliding support (a driven point). The speed (including speed and direction) of the output of each successive displacement device can be controlled individually by the central control room. By taking the box girder as a reference frame, the temporary pier can move along any smooth curve when moving relative to the box girder as a car runs on the road. The box girder displacement control method can realize that each point on the box girder strictly moves according to a preset curve path, and the displacement control of the box girder is finer than that of other construction methods. For example: when the output speed of the left side shifting device is controlled to be lower than that of the right side shifting device, the box girder can be turned leftwards. If an intelligent control system (such as a central control room) is matched, automatic and optimal turning can be easily realized, and even if deviation occurs, automatic deviation correction and other operations can be carried out in the moving process.
The continuous displacement device mainly comprises a height adjusting oil cylinder, a continuous displacement mechanism and an angle adjusting mechanism, wherein a central control room is respectively connected with the height adjusting oil cylinder, the continuous displacement mechanism and the angle adjusting mechanism so as to control the operation of the central control room. The central control room used in the invention is the conventional intelligent control system.
The height of the whole device and the moved beam body can be adjusted by the height adjusting oil cylinder; the continuous displacement mechanism can transmit power to the box girder through the friction force of the contact point of the continuous displacement mechanism and the box girder, so that continuous displacement is realized; the central control room can control all power output conditions of the whole device, and can also feed back the actual jacking height and jacking force of the height adjusting oil cylinder, the corner and torque output of the angle adjusting mechanism, the speed and torque output conditions of the continuous displacement mechanism.
The system disclosed by the invention is simple in structure and smooth in operation, can effectively realize smooth sliding of the moved box girder by any plane curve, reduces the construction difficulty of the box girder and improves the construction efficiency and precision, and the construction method is simple, convenient and easy to operate, strong in practicability and suitable for being widely popularized and introduced in the technical field.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and certainly not to limit the patent scope of the present invention; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems to be solved by the present invention, which are not substantially changed or supplemented by the spirit and the concept of the main body of the present invention, are still consistent with the present invention and shall be included in the scope of the present invention; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the invention.
Claims (9)
1. The utility model provides a bridge beam body does not have track system of sliding, its characterized in that, including interim buttress (1), a plurality of is located be used for supporting on interim buttress (1) and treat the bridge beam body that slides and drive treat continuous displacement device (2) that the arbitrary angle of bridge beam body level that slides smoothly slides, and with continuous displacement device (2) are connected and are used for control central control room (3) of continuous displacement device (2) operation.
2. The bridge girder trackless sliding system of claim 1, wherein the continuous displacement device (2) comprises a continuous displacement device body (21), a height adjusting cylinder (22) arranged at the bottom of the continuous displacement device body (21) for adjusting the height of the continuous displacement device body (21), and a continuous displacement mechanism (23) arranged at the top of the continuous displacement device body (21) for driving the bridge girder to be slid to smoothly slide horizontally at any angle; the continuous displacement device main body (21) is connected with the temporary buttress (1) through the height adjusting oil cylinder (22), and the central control room (3) is respectively connected with the height adjusting oil cylinder (22) and the continuous displacement mechanism (23).
3. The trackless sliding system of a bridge girder according to claim 2, wherein the continuous displacement device (2) further comprises an angle adjusting mechanism (24) arranged in the continuous displacement device main body (21) and used for driving the continuous displacement mechanism (23) to rotate horizontally at any angle, and the central control room (3) is connected with the angle adjusting mechanism (24).
4. The bridge girder trackless skidding system of claim 3 wherein the angle adjustment mechanism (24) is a servo motor.
5. A bridge girder trackless skidding system as claimed in claim 2 wherein the continuous displacement mechanism (23) comprises a roller (25) mounted on the continuous displacement device body (21) through a rotating shaft (27), and a crawler belt (26) mounted on the roller (25), the crawler belt (26) directly contacts the bridge girder to be skidded and drives the bridge girder to be skidded to run through friction force therebetween.
6. A bridge girder body track-free skidding system as claimed in claim 5 wherein the rotating shaft (27), the rollers (25) and the tracks (26) are driven to run in sequence.
7. A bridge girder trackless skidding system as claimed in claim 5 wherein the central control room (3) is connected to a motor driving the rotation shaft (27) to run.
8. The trackless sliding system for the bridge girder according to claim 1, wherein the temporary buttress (1) is further provided with a temporary support pillar (5) for temporarily supporting the bridge girder to be slid.
9. The construction method of the bridge girder trackless sliding system according to any one of claims 1 to 8, comprising the following steps:
step 1, preparing sliding construction, assembling a platform, a temporary pier and a guide beam;
step 2, hoisting the new beam section to the assembly platform;
step 3, completing the connection of the new hoisting beam section and the existing beam section;
step 4, sliding the whole body forwards to a design position;
and 5, repeating the steps 2-4 until all the beam sections are installed in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056213.1A CN111155446A (en) | 2020-01-18 | 2020-01-18 | Bridge body trackless sliding system and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056213.1A CN111155446A (en) | 2020-01-18 | 2020-01-18 | Bridge body trackless sliding system and construction method thereof |
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| CN111155446A true CN111155446A (en) | 2020-05-15 |
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| CN202010056213.1A Pending CN111155446A (en) | 2020-01-18 | 2020-01-18 | Bridge body trackless sliding system and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874053A (en) * | 2020-06-23 | 2020-11-03 | 如皋市宝象叉车有限公司 | Shifting device in heavy equipment cabin |
| CN113235434A (en) * | 2021-04-19 | 2021-08-10 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
| CN113718662A (en) * | 2021-09-18 | 2021-11-30 | 中铁大桥局集团有限公司 | Pushing and sliding method suitable for steel truss girder with complex vertical curve |
| CN114016369A (en) * | 2021-12-03 | 2022-02-08 | 浙江数智交院科技股份有限公司 | Deviation correcting device and beam body structure |
| CN114351673A (en) * | 2021-12-29 | 2022-04-15 | 中交武汉港湾工程设计研究院有限公司 | Steering control method for pile top supporting walking type movable piling platform |
| CN117661475A (en) * | 2023-12-06 | 2024-03-08 | 河南交控建设工程有限公司 | Rolling friction type pushing equipment and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874053A (en) * | 2020-06-23 | 2020-11-03 | 如皋市宝象叉车有限公司 | Shifting device in heavy equipment cabin |
| CN113235434A (en) * | 2021-04-19 | 2021-08-10 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
| CN113235434B (en) * | 2021-04-19 | 2022-07-08 | 中交二航局第二工程有限公司 | High-altitude unequal-height sliding transportation positioning system for large-scale component and construction method |
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| CN113718662B (en) * | 2021-09-18 | 2023-03-14 | 中铁大桥局集团有限公司 | Pushing and sliding method suitable for steel truss girder with complex vertical curve |
| CN114016369A (en) * | 2021-12-03 | 2022-02-08 | 浙江数智交院科技股份有限公司 | Deviation correcting device and beam body structure |
| CN114016369B (en) * | 2021-12-03 | 2024-03-12 | 浙江数智交院科技股份有限公司 | Deviation correcting device and beam structure |
| CN114351673A (en) * | 2021-12-29 | 2022-04-15 | 中交武汉港湾工程设计研究院有限公司 | Steering control method for pile top supporting walking type movable piling platform |
| CN117661475A (en) * | 2023-12-06 | 2024-03-08 | 河南交控建设工程有限公司 | Rolling friction type pushing equipment and construction method |
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Application publication date: 20200515 |