CN210066531U - Combined support bridge plane rotating system - Google Patents
Combined support bridge plane rotating system Download PDFInfo
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- CN210066531U CN210066531U CN201920722525.4U CN201920722525U CN210066531U CN 210066531 U CN210066531 U CN 210066531U CN 201920722525 U CN201920722525 U CN 201920722525U CN 210066531 U CN210066531 U CN 210066531U
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Abstract
The utility model provides a combination supporting bridge plane system of turning, including lower part cushion cap structure, central ball pivot, be used for supporting the carousel of waiting to turn the bridge and be used for driving carousel pivoted power unit, the structural brace table that is used for supporting central ball pivot that is equipped with of lower part cushion cap, the rotatable installation in the carousel bottom of central ball pivot, and central ball pivot is arranged corresponding to the pier bottom central zone of waiting to turn the bridge, the structural outside of brace table of lower part cushion cap is equipped with ring shape track, ring shape track goes upward to walk and is arranged many gyro wheels dollies that are used for the bearing carousel. The utility model discloses an adopt central spherical hinge and the common atress of gyro wheel dolly, treat the bridge formation multiple spot of turning and support, overcome current single spherical hinge and turned that the load is whole to concentrate on near central spherical hinge transmission, cause the inhomogeneous problem of lower part cushion cap structure atress, improved the stability of antidumping of the in-process of turning moreover greatly.
Description
Technical Field
The utility model belongs to the technical field of bridge design and construction, concretely relates to combination support bridge plane rotating body system.
Background
Compared with construction modes such as support cast-in-place, hanging basket suspension casting, prefabrication and erection and the like, the bridge swivel construction has the shortest influence time on traffic operation of existing railways and highways, so in recent years, a bridge plane swivel construction technology is widely applied to projects of newly-built overpasses crossing railways and highways and the like.
At present, the bridge plane is turned and is all adopted single ball pivot system of turning, however this mode has some limitations:
(1) the single-spherical hinge rotating mode is a single-point supporting system, only the central spherical hinge between the upper rotating disc and the lower rotating disc transmits load, when the bridge is wide, the upper rotating disc and the lower rotating disc are stressed disadvantageously, the thickness of the bearing platform needs to be increased, and a large number of prestressed tendons need to be configured; and because the load concentrates near central spherical hinge, only the partial pile foundation that is close to central point portion of pile foundation in the stage of rotating of cushion cap lower part bears vertical load, and the atress is very inhomogeneous, and the pile length is controlled by several piles that the atress is great in the middle, leads to the pile foundation to design economic inadequately.
(2) For high-rise structures such as a high-pier continuous beam and a cable-stayed bridge, the influence of wind load is large, the risk of side inclination of the bridge is large when the bridge is rotated, if a conventional single-ball hinge rotating body is adopted, the overturning moment generated by horizontal wind load is resisted mainly through the friction force of the upper spherical surface and the lower spherical surface of a ball hinge, the overall overturning resistance is low, and other auxiliary measures are required to improve the overturning resistance stability when the bridge is rotated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adopt central spherical hinge to add the combination supporting bridge plane rotating system of gyro wheel car atress in coordination to the above-mentioned defect that current single spherical hinge rotated the mode and exists, can solve prior art's partial defect at least.
The technical scheme of the utility model is to provide a combined bearing bridge plane turning system, which comprises a lower bearing platform structure and a central spherical hinge, and also comprises a turntable for supporting a bridge to be turned and a power mechanism for driving the turntable to rotate; the lower bearing platform structure is provided with a supporting platform for supporting a central spherical hinge, the central spherical hinge is rotatably arranged at the bottom of the rotary table and is arranged corresponding to the center region of the bottom of a bridge pier of a bridge to be rotated, the outer side of the supporting platform on the lower bearing platform structure is provided with a circular ring-shaped track, and a plurality of roller trolleys for supporting the rotary table are arranged on the circular ring-shaped track in an upward walking manner.
Furthermore, the circle center of the circular ring track and the circle center of the central spherical hinge plane are concentrically arranged; the turntable is a cylindrical turntable, and the axis of the turntable passes through the circle center of the circular ring track.
Furthermore, a plurality of roller trolleys on the circular ring-shaped track are distributed at equal intervals along the circumferential direction of the circular ring-shaped track.
Furthermore, the circular ring-shaped track is correspondingly positioned at the edge of the rotating disc, and the radius of the circular ring-shaped track is smaller than the rotating radius of the bridge pier of the bridge to be rotated.
Furthermore, each roller trolley comprises a trolley frame, a travelling mechanism arranged at the bottom of the trolley frame and a support column arranged on the table top of the trolley frame; each support column is fixedly connected with the bottom of the rotary table and supports the rotary table together, each support column is connected with the corresponding trolley frame through a hydraulic jack, and the load born by the corresponding support column is controlled through the hydraulic jack.
Furthermore, a guide structure for guiding the lifting motion of the support column is arranged on the trolley frame of the roller trolley.
Furthermore, the guide structure comprises an inner sliding plate which is in a cylindrical ring shape and is arranged on the trolley frame, and an outer sliding plate which is in a cylindrical ring shape and is arranged at the bottom of the support column; the outer sliding plate is coaxially sleeved outside the inner sliding plate and can slide up and down relative to the inner sliding plate, and the hydraulic jack is contained in the corresponding inner sliding plate.
Furthermore, the hydraulic jack is a self-adaptive hydraulic jack.
Furthermore, each support column is supported by a plurality of hydraulic jacks.
Furthermore, power unit includes the haulage cable, the haulage cable pre-buried in the carousel border is used for stretch-draw to drive the carousel and rotate.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model provides a this kind of combination support bridge plane rotating system adopts central spherical hinge and the common atress of gyro wheel dolly, and uses central spherical hinge as main atress mechanism, and the gyro wheel dolly treats the bridge of turning and forms the multiple spot for supplementary atress mechanism's mode and supports, has overcome current single spherical hinge and has turned that the load is whole to concentrate on near central spherical hinge transmission, causes the inhomogeneous problem of lower part cushion cap structure atress.
(2) The utility model provides a this kind of combination support bridge plane rotating body system supports center spherical hinge through a supporting bench, and center spherical hinge supports carousel center department, supports the carousel keeping away from rotation center department through many gyro wheels dollies simultaneously, and bearing structure is reliable and stable, has improved the stability of antidumping of the in-process of turning moreover greatly.
(3) The utility model provides a through setting up hydraulic jack in this kind of combination supporting bridge plane rotating system, can adjust the load that the support column bore for each strong point evenly bears the load, can the self-adaptation bridge turn the complicated load change condition that the in-process exists, guarantees the synchronization of the jacking position of each support column, effectively improves the anti-overturning ability of overall structure in the work progress of turning.
(4) The utility model provides a this kind of system of turning in combination supporting bridge plane adopts the traction cable to drive carousel and superstructure rotation as the power structure who turns, and each gyro wheel dolly does not take power, has avoided the accurate control to each gyro wheel dolly, the easy operation of turning.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic elevation structure of a planar rotating system of a composite support bridge according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a composite support bridge deck rotation system according to an embodiment of the present invention;
FIG. 3 is a schematic top plan view of a composite bearing bridge deck rotating system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a roller trolley in a combined support bridge plane rotation system according to an embodiment of the present invention.
Description of reference numerals: 1. a pile foundation; 2. a bearing platform; 3. a turntable; 4. a bridge pier; 5. a beam body; 6. a circular orbit; 7. a trolley with rollers; 8. a support table; 9. a central spherical hinge; 10. a traction cable; 11. a traveling mechanism; 12. a bogie frame; 13. an inner slide plate; 14. an outer slide plate; 15. a support pillar; 16. and a hydraulic jack.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, 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, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides a combined bridge plane rotation system, which includes a lower bearing platform structure, a central spherical hinge 9, a rotary table 3 for supporting a bridge to be rotated, and a power mechanism for driving the rotary table 3 to rotate; the lower bearing platform structure comprises a bearing platform 2 and a bearing platform supporting unit, the bearing platform supporting unit can adopt a structure supported by a plurality of pile foundations 1, the bridge to be swiveled generally comprises a pier 4 and a beam body 5 to be swiveled, and the pier 4 and the beam body 5 are both supported on a turntable 3 and rotate together with the turntable 3. A supporting table 8 for supporting the central spherical hinge 9 is arranged on the bearing table 2 of the lower bearing table structure, an arc groove matched with the central spherical hinge 9 in the direction is formed in the upper surface of the supporting table 8, the upper portion of the central spherical hinge 9 is rotatably arranged at the bottom of the rotary table 3, the lower portion of the central spherical hinge 9 is rotatably arranged in the arc groove of the supporting table 8, the central spherical hinge 9 is arranged corresponding to the central area of the bottom of the bridge pier 4 of the bridge to be swiveled, the supporting table 8 bears the load transmitted by the central spherical hinge 9, and the stability and the load supporting strength of the supporting structure near the central spherical hinge 9 are improved; meanwhile, the outer side of the supporting platform 8 on the lower bearing platform structure is provided with a circular ring-shaped track 6, the circular ring-shaped track 6 is provided with a plurality of roller trolleys 7 for supporting the rotary plate 3 in an upward walking manner, so that the common stress of the central spherical hinge 9 and the roller trolleys 7 is formed, the central spherical hinge 9 is taken as a main stress mechanism to support the center of the rotary plate 3, meanwhile, the roller trolleys 7 are taken as auxiliary stress mechanisms, the rotary bridge is treated in a mode of supporting the rotary plate 3 far away from the rotary center to form multi-point support, the problem that the stress of the lower bearing platform structure is uneven due to the fact that the rotary load of the existing single spherical hinge is completely concentrated near the central spherical hinge 9 to be transmitted is solved, and the anti-overturning stability. In the embodiment, the power mechanism comprises a traction cable 10, the traction cable 10 is pre-embedded at the edge of the turntable 3, the traction turntable 3 is tensioned by the traction cable 10 to rotate in the swivel construction process so as to drive the rotation of the integral structure at the upper part of the turntable 3, and each roller trolley 7 does not have power.
As a preferred embodiment, the center of the circular ring track 6 is concentric with the center of the plane of the central spherical hinge 9; the turntable 3 is a cylindrical turntable, namely the horizontal section is circular, the axis of the turntable passes through the circle center of the circular ring-shaped track 6, and the plurality of roller trolleys 7 on the circular ring-shaped track 6 are distributed at equal intervals along the circumferential direction of the circular ring-shaped track 6, so that the turntable is beneficial to uniformly bearing upper load.
Preferably, the circular ring-shaped track 6 is a track and is correspondingly located at the edge of the rotary table 3, namely the circular ring-shaped track 3 is arranged at a position which is far away from the rotary center of the rotary table 3 as far as possible, and the radius of the circular ring-shaped track 6 is smaller than the rotary radius of the pier 4 of the bridge to be swiveled, so that the stress of the rotary table 3 and the lower bearing platform structure is effectively improved, and the anti-overturning stability in the swivel construction process is improved.
As an embodiment, as shown in fig. 4, each of the roller trolleys 7 includes a trolley frame 12, a traveling mechanism 11 mounted at the bottom of the trolley frame 12, and a support column 15 mounted on the table top of the trolley frame 12; each support column 15 is fixedly connected with the bottom of the rotary table 3 and supports the rotary table 3 together, each support column 15 is connected with the corresponding trolley frame 12 through a hydraulic jack 16, and the load borne by the corresponding support column 15 is controlled through the hydraulic jack 16. The support column 15 is preferably a concrete-filled steel tube support column, so that the support column is light in weight, high in structural strength and good in support effect; the hydraulic jack 16 is preferably a self-adaptive hydraulic jack, and the jacking force of the hydraulic jack 16 in the turning process is controlled by using a self-adaptive hydraulic control system, so that each supporting point can uniformly bear load; specifically, the adaptive hydraulic control system is used for coordinately controlling a plurality of hydraulic jacks 16 to lift the hydraulic jacks with large weight and large volume, the system has the capacity of components with complex working surfaces, can fully automatically complete synchronous displacement, realizes the functions of force and displacement control and the like, pressure sensors and displacement sensors are arranged on the hydraulic jacks 16 and are electrically connected with the self-adaptive hydraulic control system, the measurement of precise positions and forces can be realized, the feedback of the positions and the forces is carried out, once the positions and the forces among the hydraulic jacks 16 are asynchronous, an error signal is generated, the self-adaptive hydraulic control system amplifies the signals and then superposes the amplified signals on an instruction signal, the lifting force of each hydraulic jack 16 is respectively controlled to be increased or reduced, so that the measurement positions and the forces of the hydraulic jacks 16 are changed until the asynchronous errors are eliminated; the above adaptive hydraulic jack is a conventional one, and is commercially available, and the detailed structure thereof is not described herein. By arranging the hydraulic jack 16, the load born by the support columns 15 can be adjusted, so that each support point can uniformly bear the load, the load change shared by each support column 15 in the bridge rotation engineering can be self-adapted, the synchronization of the jacking positions of the support columns 15 is ensured, and the anti-overturning capability of the whole structure in the rotation construction process is effectively improved.
Further preferably, a guide structure for guiding the lifting motion of the support column 15 is arranged on the trolley frame 12 of the roller trolley 7, so that the support column 15 is ensured to move vertically and vertically in the jacking and extending process of the hydraulic jack 16, and the stability and reliability of swivel construction are ensured. The guide structure can adopt conventional guide modes such as the matching of a guide sleeve and a guide shaft; in this embodiment, as shown in fig. 4, the guiding structure includes an inner sliding plate 13 in a shape of a cylindrical ring and mounted on the trolley frame 12, and an outer sliding plate 14 in a shape of a cylindrical ring and mounted at the bottom of the supporting column 15; the outer sliding plate 14 is coaxially sleeved outside the inner sliding plate 13 and can slide up and down relative to the inner sliding plate 13, the hydraulic jack 16 is accommodated in the corresponding inner sliding plate 13, and the outer sliding plate 14 and the inner sliding plate 13 are preferably in transition fit, so that the effect of preventing the supporting column 15 from shaking is achieved. Furthermore, each support column 15 is supported by a plurality of hydraulic jacks 16, each hydraulic jack 16 is accommodated in the inner cavity of the inner sliding plate 13, and the plurality of hydraulic jacks 16 cooperatively bear force and work in a matching manner to jointly control the load borne by the support column, so that the structure is stable, the work is reliable, and the response speed is high.
Specifically, taking the swivel construction of a single-tower double-cable-plane cable-stayed bridge of (200 + 226) m as an example, the width of the bridge deck is 32.5m, and the weight of the swivel is 3.0 ten thousand tons. When a single-ball hinge is adopted for rotation, the diameter of the ball hinge is about 4.8m, the transverse width of a pier is 22m, the transverse size of a turntable needs 24m, the upper turntable structure is stressed difficultly to meet the requirement only by supporting through a single fulcrum (the ball hinge), and when rotation is implemented under the condition of three-level wind speed, the anti-overturning stability coefficient is 1.03 and is less than 1.3 of the standard requirement. And adopt the central spherical hinge 9 that the above-mentioned embodiment provided to combine the bearing bridge plane rotating body system of atress jointly with the gyro wheel dolly 7, as shown in fig. 1, set up 1 central spherical hinge and 6 support points with gyro wheel dolly 7 in the bottom of the rotary table 3, the design plans central spherical hinge 9 and bears 2.4 ten thousand tons of loads, central spherical hinge 9 plane diameter 4.2m, every support column 15 bears 1000 tons of loads, the power transmission route of the upper portion load is: the bridge pier comprises a bridge pier 4, a rotary table 3, a central spherical hinge 9+ supporting points, a bearing platform 2 and a pile foundation 1. Through calculation, the anti-overturning stability coefficient is improved to 14.3 in the swivel construction stage, and meanwhile, the load is dispersed after the supporting points are added, so that the stress performance of the pier 4, the turntable 3, the bearing platform 2 and the pile foundation 1 is greatly improved. Meanwhile, the load borne by each steel pipe concrete support column 15 and the roller trolley 7 can be automatically controlled to be 1000 tons (the deviation is less than 2%) through the self-adaptive hydraulic jack 16.
In addition, the conventional single-ball hinge rotating scheme has a weighing and balancing program in front of the rotating body so as to ensure that the center of gravity of the rotating body structure coincides with the center of the ball hinge, and the ball hinge is in a central pressed state. The central spherical hinge 9 and the roller trolley 7 are jointly stressed to combine and support the plane rotating body system of the bridge, so that the weighing function can be realized more conveniently, and the specific operation method comprises the following steps: the automatic adjustment function of the self-adaptive hydraulic jacks 16 is firstly released, the counterforce value of each hydraulic jack 16 is read out on the premise of ensuring the level of the rotary table 3, then the counterforce of each hydraulic jack 16 is consistent (the deviation is less than 1%) by adjusting the counter weight on the beam body 5, at this moment, a balanced rotating state is achieved, and then the automatic adjustment function of the jacks is opened, so that the stress of each support column reaches the designed numerical value (1000 tons).
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a combination supporting bridge plane system of turning, includes lower part cushion cap structure and central ball pivot, its characterized in that: the bridge crane further comprises a rotary table for supporting a bridge to be rotated and a power mechanism for driving the rotary table to rotate; the lower bearing platform structure is provided with a supporting platform for supporting a central spherical hinge, the central spherical hinge is rotatably arranged at the bottom of the rotary table and is arranged corresponding to the center region of the bottom of a bridge pier of a bridge to be rotated, the outer side of the supporting platform on the lower bearing platform structure is provided with a circular ring-shaped track, and a plurality of roller trolleys for supporting the rotary table are arranged on the circular ring-shaped track in an upward walking manner.
2. The system of claim 1, wherein: the circle center of the circular ring track and the circle center of the central spherical hinge plane are concentrically arranged; the turntable is a cylindrical turntable, and the axis of the turntable passes through the circle center of the circular ring track.
3. The system of claim 1, wherein: and the plurality of roller trolleys on the circular ring-shaped track are distributed at equal intervals along the circumferential direction of the circular ring-shaped track.
4. The system of claim 1, wherein: the circular ring-shaped track is correspondingly positioned at the edge of the rotary disc, and the radius of the circular ring-shaped track is smaller than the rotating radius of the bridge pier of the bridge to be rotated.
5. The system of claim 1, wherein: each roller trolley comprises a trolley frame, a travelling mechanism arranged at the bottom of the trolley frame and a support column arranged on the table top of the trolley frame; each support column is fixedly connected with the bottom of the rotary table and supports the rotary table together, each support column is connected with the corresponding trolley frame through a hydraulic jack, and the load born by the corresponding support column is controlled through the hydraulic jack.
6. The system of claim 5, wherein: and a guide structure for guiding the lifting motion of the support column is arranged on the trolley frame of the roller trolley.
7. The system of claim 6, wherein: the guide structure comprises an inner sliding plate which is in a column ring shape and is arranged on the trolley frame, and an outer sliding plate which is in a column ring shape and is arranged at the bottom of the support column; the outer sliding plate is coaxially sleeved outside the inner sliding plate and can slide up and down relative to the inner sliding plate, and the hydraulic jack is contained in the corresponding inner sliding plate.
8. The system of claim 5, wherein: the hydraulic jack is a self-adaptive hydraulic jack.
9. A combined supported bridge deck rotation system as claimed in claim 5 or 6 or 7 or 8 wherein: each support column is supported by a plurality of hydraulic jacks.
10. The system of claim 1, wherein: the power mechanism comprises a traction cable which is embedded in the edge of the rotary table and used for tensioning to drive the rotary table to rotate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722525.4U CN210066531U (en) | 2019-05-20 | 2019-05-20 | Combined support bridge plane rotating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920722525.4U CN210066531U (en) | 2019-05-20 | 2019-05-20 | Combined support bridge plane rotating system |
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| CN210066531U true CN210066531U (en) | 2020-02-14 |
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| CN201920722525.4U Active CN210066531U (en) | 2019-05-20 | 2019-05-20 | Combined support bridge plane rotating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130231A (en) * | 2019-05-20 | 2019-08-16 | 中铁武汉勘察设计研究院有限公司 | A kind of combination support bridge plane swivel system |
| CN111691316A (en) * | 2020-06-28 | 2020-09-22 | 重庆交通大学 | Shock-proof bridge structure of turning |
-
2019
- 2019-05-20 CN CN201920722525.4U patent/CN210066531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130231A (en) * | 2019-05-20 | 2019-08-16 | 中铁武汉勘察设计研究院有限公司 | A kind of combination support bridge plane swivel system |
| CN111691316A (en) * | 2020-06-28 | 2020-09-22 | 重庆交通大学 | Shock-proof bridge structure of turning |
| CN111691316B (en) * | 2020-06-28 | 2022-02-18 | 重庆交通大学 | Shock-proof bridge structure of turning |
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Effective date of registration: 20221017 Address after: 430074 building E5, phase IV, optical valley software park, 1 Guanshan Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: China Railway Wuhan survey and Design Institute Co.,Ltd. Address before: Building E5, phase IV, Guanggu Software Park, No.1 Guanshan Avenue, Hongshan District, Wuhan City, Hubei Province Patentee before: CHINA RAILWAY WUHAN SURVEY AND DESIGN & INSTITUTE Co.,Ltd. |
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