CN215210582U - Large-span steel-concrete composite beam falling device - Google Patents
Large-span steel-concrete composite beam falling device Download PDFInfo
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- CN215210582U CN215210582U CN202120904623.7U CN202120904623U CN215210582U CN 215210582 U CN215210582 U CN 215210582U CN 202120904623 U CN202120904623 U CN 202120904623U CN 215210582 U CN215210582 U CN 215210582U
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Abstract
The utility model discloses a large-span steel-concrete composite beam device that falls relates to bridge construction auxiliary device technical field, including the roof beam system that falls, the roof beam system that falls includes deviation correcting mechanism and whereabouts mechanism. The deviation correcting mechanism is fixedly arranged on the pier stud, and the falling mechanism comprises a lifting device and a temporary buttress device. The landing gear is fixedly arranged on the deviation correcting mechanism, the beam body is placed on the landing gear, and the landing gear is a hydraulic mechanism and can control the lifting of the beam body. The deviation correcting mechanism is used for adjusting the positions of the landing gear and the beam body in the horizontal direction. The temporary buttress device is a temporary support, a device for assisting in height adjustment is arranged on the temporary buttress device, and the control system comprises a controller which is respectively electrically connected with each actuating mechanism and used for controlling the cooperative operation of each actuating mechanism. The control system can intuitively know the full-bridge beam falling parameters in real time, and dynamically adjust the full-bridge beam falling parameters according to the posture, the internal force and other conditions of the beam body, so that the safety and controllability of the falling beam are ensured.
Description
Technical Field
The utility model relates to a bridge construction auxiliary device technical field especially relates to a large-span steel-concrete composite beam device that falls.
Background
At present, in the process of beam falling of the steel-concrete composite beam, because the unbalanced load action of the large-span steel-concrete composite beam can cause adverse internal force action and linear posture influence on the steel-concrete composite beam in the beam falling process, the large-span steel-concrete composite beam needs to adopt a beam falling device which is specially designed according to the characteristics of the steel-concrete composite beam, and the structural safety and the linear posture controllability of the steel-concrete composite beam in the beam falling process are ensured.
The large-span steel-concrete composite beam under the action of unbalanced load has the problems that the beam falling synchronism is ensured, and the integral linear posture meets the precision requirement.
Disclosure of Invention
In order to solve the above problem, the utility model discloses a following technical scheme realizes:
a large-span steel-concrete composite beam falling device comprises a beam falling system and a control system;
the beam falling system comprises a deviation correcting mechanism and a falling mechanism;
the deviation rectifying mechanism is fixedly arranged on the pier stud;
the falling mechanism comprises a landing gear and a temporary buttress device;
the lifting device is fixedly arranged on the deviation correcting mechanism, and a beam body is placed on the lifting device; the lifting device is a hydraulic mechanism and can control the lifting of the beam body; the deviation correcting mechanism is used for adjusting the positions of the landing gear and the beam body in the horizontal direction;
the temporary buttress device is a temporary support, and a device for assisting in height adjustment is arranged on the temporary buttress device;
the control system comprises a controller, wherein the controller is electrically connected with each executing mechanism respectively and is used for controlling the cooperative work of each executing mechanism.
Preferably, the deviation rectifying mechanism is fixedly arranged on the pier stud and positioned on one side of the support base cushion stone.
Preferably, the lifting device comprises a vertical jack, a pump station and a height-adjustable steel plate, the vertical jack is fixedly arranged on the deviation correcting mechanism, a plurality of height-adjustable steel plates are placed on the vertical jack, and a beam body is placed on the height-adjustable steel plates; the lifting and falling of the vertical jack are controlled by the oil transportation and return of the pump station, and the stroke of the lifting device is adjusted by heightening the steel plate, so that the lifting control of the beam body can be realized.
The temporary buttress device comprises a buttress, an adjustable wedge-shaped buttress pad and a copy pad unit;
the buttress is fixedly arranged on two sides of the pier column; the adjustable wedge-shaped supporting pad is fixedly arranged on the supporting pier, and the shoveling pad unit is placed on the adjustable wedge-shaped supporting pad;
the deviation rectifying mechanism comprises a deviation rectifying track, a vertical jack base and a transverse deviation rectifying jack;
the correcting track is fixedly arranged on the pier stud, the vertical jack base is slidably arranged on the correcting track, the vertical jack is fixedly arranged on the vertical jack base, one side of the vertical jack base is connected with one end of the transverse correcting jack, and the other end of the transverse correcting jack is fixedly connected with one side of the support base stone;
preferably, the mat unit is formed by stacking a plurality of steel plates.
Preferably, the adjustable wedge-shaped support pad comprises a support pad base, the support pad base is of a long plate structure, two sides of the support pad base are respectively provided with a wedge block in a sliding manner, the cross section of each wedge block is of a triangular structure, and the vertex angles of the two wedge blocks are opposite;
the two wedge blocks are directly provided with lifting blocks, the cross sections of the lifting blocks are of inverted trapezoidal structures, and the height distance between the lifting blocks and the support pad base can be adjusted by adjusting the distance between the two wedge blocks;
the top surface of the lifting block is provided with the shoveling pad unit.
Preferably, a pressure sensor is arranged on the vertical jack base; the oil pressure detection device is used for detecting the oil pressure of the jack.
The top of the height-adjusting steel plate is provided with a first stress sensor; for detecting the weight change of the beam body.
A second stress sensor and a first temperature sensor are respectively arranged on the beam body; the temperature sensor is used for detecting stress change and temperature value on the beam body.
A second temperature sensor is arranged on the other side of the support base cushion; used for detecting the ambient temperature of the pier stud.
A displacement detection sensor is arranged on the deviation rectifying track; the displacement detection device is used for detecting the displacement of the vertical jack base.
The pressure sensor, the first stress sensor, the second stress sensor, the first temperature sensor, the second temperature sensor and the displacement detection sensor are respectively electrically connected with the controller.
Preferably, the controller is an industrial personal computer, configuration software is arranged on the industrial personal computer in a matched mode, the configuration software can receive and display data of each sensor, and finally lifting control of the jack is achieved manually or automatically.
The invention has the following advantages:
(1) planning and arranging beam falling equipment according to the stress and section characteristics of the steel-concrete composite beam, fully considering the stress characteristics of the steel-concrete composite beam under the conditions of large temperature difference change and unbalanced load arrangement, and dynamically adjusting;
(2) compared with the traditional multipoint beam falling mode, the control system can intuitively know the full-bridge beam falling parameters in real time, and dynamically adjust the full-bridge beam falling parameters according to the beam posture, the internal force and other conditions, so that the safety and controllability of the beam falling of the special steel-concrete composite beam are ensured;
(3) the whole full-bridge synchronous beam falling is realized by controlling the jacking force of the beam falling vertical jack, so that the stress balance of the main body support is ensured, and the safety of the main body structure is further ensured;
(4) the traditional transverse deviation rectifying mode has high requirement on the strength of a main structure and is not suitable for large-span steel-concrete composite beams.
Drawings
Fig. 1 is a schematic view of the position of the embodiment provided by the present invention on the pier stud;
fig. 2 is a side view of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described in detail and completely with reference to fig. 1 and 2 of the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
As shown in fig. 1 and 2, the large-span steel-concrete composite beam falling device comprises a beam falling system and a control system. The beam falling system comprises a deviation correcting mechanism 1 and a falling mechanism 2. As shown in fig. 1, the deviation rectifying mechanism 1 is fixedly arranged on a pier stud 3, and the falling mechanism 2 comprises a landing gear and a temporary buttress device. As shown in fig. 2, the landing gear is fixedly arranged on the deviation rectifying mechanism 1, and a beam body 4 is placed on the landing gear. The lifting device is a hydraulic mechanism and can control the lifting of the beam body 4; the deviation rectifying mechanism 1 is used for adjusting the positions of the landing gear and the beam body 4 in the horizontal direction. The temporary buttress device is a temporary support, and a device for assisting in height adjustment is arranged on the temporary buttress device. The control system comprises a controller, wherein the controller is electrically connected with each executing mechanism respectively and is used for controlling the cooperative work of each executing mechanism.
More specifically, as shown in fig. 1, the deviation correcting mechanism 1 is fixedly arranged on the pier stud 3 and located on one side of the support cushion stone 30. As shown in fig. 2, the landing gear comprises a vertical jack 20, a pump station and a height-adjustable steel plate 21, the vertical jack 20 is fixedly arranged on the deviation-correcting mechanism 1, a plurality of height-adjustable steel plates 21 are placed on the vertical jack 20, and a beam body 4 is placed on the height-adjustable steel plates 21. The lifting and falling of the vertical jack are controlled by the oil transportation and return of the pump station, and the stroke of the lifting device is adjusted by heightening the steel plate, so that the lifting control of the beam body can be realized.
The temporary buttress arrangement includes a buttress 22, an adjustable wedge-shaped buttress 23, and a dip-pad unit 24. The support piers 22 are fixedly arranged on two sides of the pier column 3, the adjustable wedge-shaped support pads 23 are fixedly arranged on the support piers 22, and the shoveling pad units 24 are placed on the adjustable wedge-shaped support pads 23.
The adjustable wedge-shaped support pad 23 comprises a support pad base 230, the support pad base 230 is of a long plate structure, two sides of the support pad base 230 are respectively provided with a wedge 231 in a sliding manner, the cross section of each wedge 231 is of a triangular structure, and the top angles of the two wedges 231 are opposite. The two wedges 231 are directly provided with the lifting block 232, the cross section of the lifting block 232 is of an inverted trapezoidal structure, and the height distance between the lifting block 232 and the support pad base 230 can be adjusted by adjusting the distance between the two wedges 231. The top surface of the lifting block 232 is provided with the dip pad unit 24. The mat unit 24 is formed by stacking a plurality of steel plates.
The deviation rectifying mechanism 1 comprises a deviation rectifying track 10, a vertical jack base 11 and a transverse deviation rectifying jack 12. The correcting track 10 is fixedly arranged on the pier stud 3, the vertical jack base 11 is slidably arranged on the correcting track 10, the vertical jack 20 is fixedly arranged on the vertical jack base 11, one side of the vertical jack base 11 is connected with one end of the transverse correcting jack 12, and the other end of the transverse correcting jack 12 is fixedly connected with one side of the support base stone 30;
in addition, the external force can accurately sense the stress condition and the temperature of each stress part, and a pressure sensor is arranged on the vertical jack base 11; the oil pressure detection device is used for detecting the oil pressure of the jack. A first stress sensor is arranged at the top of the height-adjusting steel plate 21; for detecting the weight change of the beam body. A second stress sensor and a first temperature sensor are respectively arranged on the beam body; the temperature sensor is used for detecting stress change and temperature value on the beam body. A second temperature sensor is arranged on the other side of the support cushion 30; used for detecting the ambient temperature of the pier stud. A displacement detection sensor is arranged on the deviation rectifying track 10; for detecting the displacement of the vertical jack mount 11. The pressure sensor, the first stress sensor, the second stress sensor, the first temperature sensor, the second temperature sensor and the displacement detection sensor are respectively electrically connected with the controller.
The controller may be any industrial controller, such as a Programmable Logic Controller (PLC), etc., but for convenience of observation and operation, in this embodiment, it is preferable that the controller is an industrial personal computer, and the industrial personal computer is provided with configuration software, which is capable of receiving and displaying data of each sensor, and finally, manually or automatically implementing lifting control of the jack.
The sensors at various positions on site collect stress, temperature, oil pressure and displacement information of the steel-concrete composite beam and the beam falling device, the stress, temperature, oil pressure and displacement information is transmitted to a main control computer in a wireless mode, and the main control computer centrally processes the information in real time and comprehensively reflects the information to an operation interface of the main control computer according to a pre-installed large-span steel-concrete composite beam falling software system. And the field control personnel select a computer to automatically adjust or manually adjust according to the parameter calculation result of the main control computer, and wirelessly transmit an adjustment instruction to each field controller to realize the overall real-time dynamic adjustment, and ensure the synchronism of cooperative operation of the beam falling devices of all parts, the structural safety of the beam body of the steel-concrete composite beam and the beam falling accuracy in the beam falling process of the large-span steel-concrete composite beam.
In one embodiment, each pier is provided with 4 sets of beam falling systems, each beam falling system comprises a falling mechanism and a deviation correcting mechanism, each falling mechanism comprises a lifting device and a temporary buttress device, each lifting device consists of a vertical jack, a pump station and a height-adjusting steel plate, the lifting and falling of the vertical jack are controlled by oil transportation and oil return of the pump station, the stroke size of each lifting device is adjusted by the height-adjusting steel plate, each temporary buttress device comprises an adjustable wedge-shaped buttress pad and a lifting pad unit, after a beam body is lifted by a vertical jack extending cylinder, a layer of lifting pad unit is extracted, the beam body is placed on the temporary buttress consisting of the adjustable wedge-shaped buttress pad and the lifting pad unit by a vertical jack retracting cylinder, the step is repeated, the adjustable wedge-shaped buttress pads are finally dismantled, and the beam body falls on a permanent support; the deviation rectifying mechanism comprises a specially-made vertical jack base, a deviation rectifying rail, a transverse deviation rectifying jack and a main body support base cushion stone, the falling mechanism is combined with the deviation rectifying rail through the specially-made vertical jack base, the transverse deviation rectifying jack takes the main body support base cushion stone as a reaction frame, and the deviation of the axis of the beam body is adjusted through a stretching cylinder and a retracting cylinder of the jack.
When the device is adopted for construction, the operation is carried out according to the following steps:
step 1: building a temporary buttress;
step 2: installing a deviation rectifying mechanism;
and step 3: mounting a landing gear;
and 4, step 4: synchronously falling beams in a grading manner;
in the step 1, considering the problem that a construction working face is easy to operate, the erection height of the temporary buttress needs to be controlled, enough working space is reserved, and then the subsequent construction can be facilitated, wherein the height of a shoveling pad above the temporary buttress is adjusted to achieve the purpose.
In the step 2, a deviation-correcting track is specially manufactured in a steel rail and profile steel consolidation process, adjustable limiting is installed, and the deviation-correcting track is fixedly connected with a pier stud embedded part.
And 3, mounting the vertical jack in a special base, combining the vertical jack with the deviation rectifying track, connecting the vertical jack with a pump station through an oil pipe, and adjusting the vertical oil pressure and the stroke according to the instruction of a main control computer.
And 4, the control system comprises a plurality of pressure sensors, a main control computer and a controller on site, wherein the sensors at each position on site acquire stress, temperature, oil pressure and displacement information of the steel-concrete composite beam and the beam falling device, the stress, temperature, oil pressure and displacement information are transmitted to the main control computer in a wireless mode, and the main control computer intensively processes the information in real time and comprehensively reflects the information to an operation interface of the main control computer according to a pre-installed large-span steel-concrete composite beam falling software system. The field control personnel select the automatic adjustment or the manual adjustment of the computer according to the parameter calculation result of the main control computer, and wirelessly transmit an adjustment instruction to each controller on the field, and perform the transverse deviation correction adjustment in the gap of the graded beam falling.
The control system forms an on-line control network with a full-bridge beam falling system through a sensor, a main control computer, a controller and a full-bridge beam falling system, and adjusts the horizontal and vertical displacement and force value of the beam falling device through the calculation analysis and the human intervention of industrial control software of the main control computer, so that the grading synchronous dynamic beam falling adjustment of the large-span steel-concrete combined beam on unbalanced upper load can be realized, the large-span steel-concrete combined beam falling device is an important structure for ensuring the beam falling construction safety of a beam body, and is a key process of pushing construction. The adjustment of the space linear type and the alignment posture of the steel box girder is carried out through the system of tightly combining the two lines on the line and the line off the line, and the requirements of design specification, construction specification and acceptance specification can be met. The invention can well realize the beam falling construction of the steel-concrete special section combination beam under the action of large load, optimizes the system design of the beam falling device, improves the coordination of the operation of each part, reduces the potential safety hazard and ensures the construction quality.
Claims (7)
1. A large-span steel-concrete composite beam falling device is characterized by comprising a beam falling system and a control system;
the beam falling system comprises a deviation correcting mechanism (1) and a falling mechanism (2);
the deviation rectifying mechanism (1) is fixedly arranged on the pier stud (3);
the falling mechanism (2) comprises a landing gear and a temporary buttress device;
the lifting device is fixedly arranged on the deviation correcting mechanism (1), and a beam body (4) is arranged on the lifting device; the lifting device is a hydraulic mechanism and can control the lifting of the beam body (4); the deviation correcting mechanism (1) is used for adjusting the positions of the landing gear and the beam body (4) in the horizontal direction;
the temporary buttress device is a temporary support, and a device for assisting in height adjustment is arranged on the temporary buttress device;
the control system comprises a controller, wherein the controller is electrically connected with each executing mechanism respectively and is used for controlling the cooperative work of each executing mechanism.
2. The large-span steel-concrete composite beam falling device according to claim 1, characterized in that:
the deviation rectifying mechanism (1) is fixedly arranged on the pier stud (3) and is positioned on one side of the support base cushion stone (30).
3. The large-span steel-concrete composite beam falling device according to claim 2, characterized in that:
the lifting device comprises a vertical jack (20), a pump station and a height-adjusting steel plate (21), the vertical jack (20) is fixedly arranged on the deviation-rectifying mechanism (1), a plurality of height-adjusting steel plates (21) are placed on the vertical jack (20), and a beam body (4) is placed on the height-adjusting steel plates (21);
the temporary buttress device comprises a buttress (22), an adjustable wedge-shaped buttress pad (23) and a copy pad unit (24);
the buttress (22) is fixedly arranged on two sides of the pier column (3); the adjustable wedge-shaped support pad (23) is fixedly arranged on the buttress (22), and the shoveling pad unit (24) is placed on the adjustable wedge-shaped support pad (23);
the deviation rectifying mechanism (1) comprises a deviation rectifying track (10), a vertical jack base (11) and a transverse deviation rectifying jack (12);
the utility model discloses a pier stud's structure, including upright post (3), rectifying track (10), vertical jack base (11), the fixed vertical jack (20) that is provided with of being provided with of rectifying track (10) above the pier stud (3), one side of vertical jack base (11) with the one end of jack (12) of transversely rectifying is connected, the other end of jack (12) of transversely rectifying with one side fixed connection of support bed stone (30).
4. The large-span steel-concrete composite beam falling device according to claim 3, characterized in that:
the mat making unit (24) is formed by mutually stacking a plurality of steel plates.
5. The large-span steel-concrete composite beam falling device according to claim 3, characterized in that:
the adjustable wedge-shaped support pad (23) comprises a support pad base (230), the support pad base (230) is of a long plate structure, a wedge block (231) is slidably arranged on each of the two sides of the support pad base, the cross section of each wedge block (231) is of a triangular structure, and the vertex angles of the two wedge blocks (231) are opposite;
the two wedges (231) are directly provided with lifting blocks (232), the cross sections of the lifting blocks (232) are of inverted trapezoidal structures, and the height distance between the lifting blocks (232) and the support pad base (230) can be adjusted by adjusting the distance between the two wedges (231);
the top surface of the lifting block (232) is provided with the shoveling and cushioning unit (24).
6. The large-span steel-concrete composite beam falling device according to claim 3, characterized in that:
a pressure sensor is arranged on the vertical jack base (11);
the top of the height-adjusting steel plate (21) is provided with a first stress sensor;
a second stress sensor and a first temperature sensor are respectively arranged on the beam body;
a second temperature sensor is arranged on the other side of the support base cushion (30);
a displacement detection sensor is arranged on the deviation rectifying track (10);
the pressure sensor, the first stress sensor, the second stress sensor, the first temperature sensor, the second temperature sensor and the displacement detection sensor are respectively electrically connected with the controller.
7. The large-span steel-concrete composite beam falling device according to claim 6, characterized in that:
the controller is an industrial personal computer, configuration software is arranged on the industrial personal computer in a matched mode, the configuration software can receive and display data of each sensor, and finally lifting control of the jack is achieved manually or automatically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120904623.7U CN215210582U (en) | 2021-04-29 | 2021-04-29 | Large-span steel-concrete composite beam falling device |
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| CN202120904623.7U CN215210582U (en) | 2021-04-29 | 2021-04-29 | Large-span steel-concrete composite beam falling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438904A (en) * | 2021-12-22 | 2022-05-06 | 中铁二十五局集团第二工程有限公司 | Long-span through-type continuous steel truss pushing process |
| CN114525727A (en) * | 2022-03-03 | 2022-05-24 | 长沙理工大学 | Temporary pier locking device for steel box girder cable-stayed bridge and construction method |
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2021
- 2021-04-29 CN CN202120904623.7U patent/CN215210582U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114438904A (en) * | 2021-12-22 | 2022-05-06 | 中铁二十五局集团第二工程有限公司 | Long-span through-type continuous steel truss pushing process |
| CN114438904B (en) * | 2021-12-22 | 2024-07-12 | 中铁二十五局集团第二工程有限公司 | Large-span downward-bearing type continuous steel truss girder pushing process |
| CN114525727A (en) * | 2022-03-03 | 2022-05-24 | 长沙理工大学 | Temporary pier locking device for steel box girder cable-stayed bridge and construction method |
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