Consolidation device of swivel bridge upper bearing platform

Abstract

The utility model relates to the technical field of bridge construction, in particular to a consolidation device of a swivel bridge upper bearing platform, which comprises a lower bearing platform, an upper bearing platform and an abutment, spherical hinges are arranged in the middles of the lower bearing platform and the upper bearing platform, and an outer jack boosting embedded seat is arranged on one side of an inner jack boosting embedded seat. According to the swivel bridge spherical hinge system, the stress structure of the swivel bridge spherical hinge system is not affected by omitting a sand bucket, investment cost can be reduced, labor used in the working procedure is directly reduced in the construction process, the construction period is shortened, the construction efficiency is improved, and the construction cost is reduced. The operation space is optimized, construction interference is reduced, the construction process is simpler and more convenient, the construction speed is increased, meanwhile, the construction period and the construction cost are saved, the steel member machining period is shortened, the overall structure is convenient to install and operate on site, and therefore the construction cost is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a consolidation device for a cap on a rotary bridge. Background Art

[0002] After searching the existing Chinese patent literature with the announcement number CN211472142U, a swivel cable-stayed bridge pier and its reinforcement device are disclosed, including a number of Bailey beams distributed on the periphery of the main pier of the cable-stayed bridge and a number of steel strands arranged along the circumference of the main pier of the cable-stayed bridge; the several Bailey beams and the main pier of the cable-stayed bridge form an effective whole, one end of the several steel strands is fixedly connected to the Bailey beams on the periphery of the main pier of the cable-stayed bridge, and the other end is fixedly connected to the upper pedestal of the cable-stayed bridge through a tensioned end anchor. The device effectively reinforces the tower pier beam consolidation section of the cable-stayed bridge through the Bailey beam, improves the stress distribution of the section, and improves its compressive performance; by arranging a number of tensioned steel strands between the main pier of the cable-stayed bridge and the upper pedestal, the weight distribution and position state of the swivel cable-stayed bridge can be adjusted, the longitudinal stability during construction is improved, and the construction risk is reduced.

[0003] The ball joint system of the current technical solution mainly includes a swivel support, a support leg, a sand bucket, a circular slide, a traction system (traction reaction seat) and a booster system (jack reaction seat). The sand bucket and the support leg are set alternately at the same radius; the jack reaction seat is set on both sides of the circular slide. The sand bucket is part of the auxiliary support system. When the bridge is cast, it bears the weight of the entire bridge together with the ball joint body. During the construction of the swivel bridge, due to construction errors, the center of gravity cannot always be maintained at the center of the swivel ball joint. The deviation of the center of gravity will produce an overturning moment. The auxiliary support system balances the overturning moment within the load-bearing range to ensure the smooth construction of the bridge. The force within the load-bearing range of the auxiliary support system refers to the fact that the magnitude of the force is highly uncertain, the temporary measures require a large investment, and many components can be replaced, and the role played is not obvious; jack reaction seat: an emergency device combination when the traction system cannot work normally or to provide additional power to the traction system. There are many simple emergency measures, and they are highly substitutable. As a reinforced concrete structure, the steps of measurement and setting out, steel bar binding, formwork erection, and concrete pouring are cumbersome, and the ball joint system is more complicated; Support legs: The support legs play a supporting role before weighing, and the support legs are suspended during weighing and rotation. The number of support legs should generally not be less than 2, and the gap between the support legs and the ring channel should not be too large or too small. If the gap is too large, it will not play a stabilizing role when the structure loses balance; if the gap is too small, if the geometric dimensions are not strictly controlled during the construction process before the rotation, the actual position of the center of gravity of the structure will be significantly different from the theoretical calculated position. During the horizontal rotation, the local support legs will support the ring channel, causing the ring channel to deform and difficult to rotate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a consolidation device for the pedestal on a rotating bridge, aiming to solve the technical problems in the prior art of the force within the bearing range of the auxiliary support system, namely, the force has a strong uncertainty in magnitude, the temporary measures have a large investment, many components can be replaced, the role played is not obvious, the ball joint system is relatively complex, and the local support legs support the ring during the horizontal rotation, causing the ring to deform and difficult to rotate.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a consolidation device for a bearing platform on a rotating bridge, comprising a lower bearing platform, an upper bearing platform and a pier, wherein a ball joint is arranged in the middle of the lower bearing platform and the upper bearing platform, an inner jack-assisting embedded seat is arranged on one side of the ball joint, an outer jack-assisting embedded seat is arranged on one side of the inner jack-assisting embedded seat, a steel frame is arranged in the middle of the inner jack-assisting embedded seat and the outer jack-assisting embedded seat, a support leg is arranged on the lower part of the surface of one side of the steel frame, a slide plate is arranged on the bottom end surface of the steel frame, a slideway is arranged on the bottom end surface of the slide plate, a jack and a double-piece I-beam are arranged on one side of the support leg, a first traction reaction seat and a second traction reaction seat are arranged at both ends of the top end surface of the lower bearing platform, and ropes are arranged on the inner sides of the first traction reaction seat and the second traction reaction seat.

[0007] As a further description of the above technical solution:

[0008] The lower bearing platform and the upper bearing platform are spliced ​​and assembled with the ball joint, and the lower bearing platform and the upper bearing platform are spliced ​​and assembled with the inner jack booster embedded seat and the outer jack booster embedded seat, and the inner jack booster embedded seat and the outer jack booster embedded seat are both I32a I-beam settings.

[0009] As a further description of the above technical solution:

[0010] A wide steel plate is welded to the unburied part of the embedded seat for boosting the inner jack, and the wide steel plate is 2 cm thick and 28 cm wide. The lower pedestal and the steel frame are spliced ​​and assembled, and the steel frame is arranged in a ring shape.

[0011] As a further description of the above technical solution:

[0012] The steel frame is fixedly connected to the support legs and the slide plate. The support legs are φ820mm spiral steel pipes, which are arranged in a ring shape in sequence. The thickness of the slide plate is 3cm.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the investment cost can be reduced by eliminating the sand bucket without affecting the force-bearing structure of the ball joint system of the swivel bridge, and the labor of this process is directly reduced during the construction process, which not only saves the construction period, but also optimizes the working space, reduces construction interference, and makes the construction process simpler and more convenient, accelerates the construction speed, saves construction period and construction cost, and reduces the processing cycle of steel components. The overall structure is convenient for on-site installation and operation, thereby reducing construction costs and shortening construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a cross-sectional schematic diagram of the lower support structure of the utility model;

[0017] Figure 2 It is a schematic diagram A of the utility model;

[0018] Figure 3 It is a plane schematic diagram of the swivel ball joint of the utility model;

[0019] In the figure: 1. Lower bearing platform; 2. Upper bearing platform; 3. Ball joint; 4. Internal jack-assisted embedded seat; 5. External jack-assisted embedded seat; 6. Steel frame; 7. Support legs; 9. Slide plate; 10. Slideway; 11. Jack; 12. Double-piece I-beam; 13. First traction reaction seat; 14. Second traction reaction seat; 15. Rope. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] In the drawings, the same reference numerals all refer to the same components.

[0022] Example 1

[0023] Reference Figure 1-3The utility model provides an embodiment: a consolidation device for a swivel bridge upper pedestal, comprising a lower pedestal 1, an upper pedestal 2 and a pier, a ball joint 3 is arranged in the middle of the lower pedestal 1 and the upper pedestal 2, an inner jack-assisting embedded seat 4 is arranged on one side of the ball joint 3, an outer jack-assisting embedded seat 5 is arranged on one side of the inner jack-assisting embedded seat 4, a steel frame 6 is arranged in the middle of the inner jack-assisting embedded seat 4 and the outer jack-assisting embedded seat 5, a support leg 7 is arranged on the lower part of the surface of one side of the steel frame 6, a slide plate 9 is arranged on the bottom end surface of the steel frame 6, a slideway 10 is arranged on the bottom end surface of the slide plate 9, a jack 11 and a double-piece I-beam 12 are arranged on one side of the support leg 7, a first traction reaction seat 13 and a second traction reaction seat 14 are arranged at both ends of the top surface of the lower pedestal 1, and a cable 15 is arranged on the inner side of the first traction reaction seat 13 and the second traction reaction seat 14.

[0024] The lower bearing platform 1 and the upper bearing platform 2 are spliced ​​and assembled with the ball joint 3. The lower bearing platform 1 and the upper bearing platform 2 are spliced ​​and assembled with the inner jack-boosting embedded seat 4 and the outer jack-boosting embedded seat 5. The inner jack-boosting embedded seat 4 and the outer jack-boosting embedded seat 5 are both I32a I-beam settings.

[0025] The non-embedded part of the inner jack-assisted embedded seat 4 is welded with a wide steel plate, the thickness of the wide steel plate is 2 cm, and the width is 28 cm. The lower pedestal 1 and the steel frame 6 are spliced ​​and assembled, and the steel frame 6 is arranged in a ring shape.

[0026] The steel skeleton 6 is fixedly connected to the support legs 7 and the slide plate 9. The support legs 7 are φ820mm spiral steel pipes, which are arranged in a ring shape in sequence. The slide plate 9 is 3cm thick.

[0027] Specifically, its structure is composed of a lower bearing platform 1, an upper bearing platform 2, a ball joint 3, an inner jack-assisted embedded seat 4, an outer jack-assisted embedded seat 5, a steel frame 6, a support leg 7, a slide plate 9, a slideway 10, a jack 11, a double-piece I-beam 12, a first traction reaction seat 13, a second traction reaction seat 14 and a cable 15 to form a consolidation device of the upper bearing platform of the swivel bridge, a structure that supports the ball joint 3 through the lower bearing platform 1 and matches the upper turntable, a structure that supports the rotated structure through the upper bearing platform 2 and can rotate relative to the lower part, a structure that cooperates with the pier to support the rotated structure and can rotate relative to the upper bearing platform 2, a ball joint 3 is used as a swivel support system, a device for bearing the weight of the rotating body and realizing rotation, and a structure that supports the upper bearing platform 2 through the inner jack. The embedded seat 4 and the external jack-assisted embedded seat 5 consolidate the upper pedestal 2, balance and restrain the overturning moment of the beam body; at the same time, together with the double-piece I-beam 12 and the jack 11, they provide emergency or additional power for the traction system when the traction system cannot work normally. The external jack-assisted embedded seat 5 is disconnected from the I-beam before weighing, and the internal jack-assisted embedded seat 4 is disconnected from the lower pedestal 1 and the upper pedestal 2I32a-shaped steel during beam construction. The formwork is removed and disconnected 40cm from the lower pedestal 1 before weighing. The steel skeleton 6 is used as a swivel balance system to increase the rigidity of the device to resist the overturning of the rotating body. The support leg 7 is used as a swivel support and balance system to bear the weight of the rotating body, realize rotation and prevent the rotating body from overturning. The bridge rotates The force-bearing support part that bears the weight of the rotating body together with the central support, the steel skeleton 6 cooperates with the support legs 7, the skateboard 9 and the slideway 10 as a rotation balance system, a device to prevent the rotating body from overturning, the jack 11 as a traction system, provides emergency or additional power traction mechanical equipment and devices for the rotation construction, the double-piece I-beam 12 as a traction system, provides emergency or additional power traction mechanical equipment and devices for the rotation construction, the first traction reaction seat 13, the second traction reaction seat 14 and the cable 15 as a traction system, cooperate with the ball joint 3 are all conventional devices of the rotation structure, provide power traction mechanical equipment and devices for the rotation construction, the consolidation device of the pedestal on the rotating bridge, the jack reaction seat is cancelled and added The jack-pushed embedded seat further optimizes the stress condition of the ball joint system of the swivel bridge. In the original design, the ball joint support, sand bucket, support leg 7 and jack reaction seat are all compressed structures with relatively single force, which cannot balance the overturning moment well. After adjusting to the jack-pushed embedded seat, the lower pedestal 1 and the upper pedestal 2 are temporarily consolidated, and the beam body and the pier are in a cantilever "T-structure" stress state before weighing, which is more stable and safe during construction. Similarly, when the traction system cannot work normally, the double I-beam 12 and the jack 11 are installed on the side of the jack-pushed embedded seat for emergency or to provide additional power for the traction system. The steel component structure of the support leg 7 is adjusted to a steel pipe-reinforced concrete structure, which not only strengthens the compression stress state of the support leg, but also effectively reduces the processing cycle of the steel component.

[0028] Working principle: the support leg 7 and the ball joint 3 jointly bear the support form of the swivel beam, the support leg 7 and the jack-boosting embedded seat jointly bear and resist the overturning moment of the beam body, and the traction reaction seat, the cable 15 and the traction jack 11 are combined to provide rotational traction; when the traction system cannot work normally, the boosting device formed by the jack-boosting embedded seat, the double-piece I-beam 12 and the jack 11 provides emergency or additional power for the traction system to rotate the swivel bridge, which is a combination of emergency or additional power for the traction system when the traction system cannot work normally. The ball joint 3 system mainly includes a traction system formed by a swivel support, a support leg 7, an annular slide 10, a first traction reaction seat 13 and a second traction reaction seat 14, and a boosting system formed by an inner jack boosting embedded seat 4 and an outer jack boosting embedded seat 5. The inner jack boosting embedded seat 4 and the outer jack boosting embedded seat 5 use an I-beam ≥I32a, and the length of the I-beam meets the embedded depth of the upper and lower pedestals. A 2cm*70cm*28cm thick reinforced steel plate composite structure is welded on both sides of the I-beam web position. The overall stiffness must be greater than the combined force of the swivel structure weight, prestressed tensile pretension, eccentric loads such as construction personnel and machinery, unbalanced torque caused by eccentric loads caused by construction errors, and the weight of the hanging basket. The position of the support leg 7 is set in the same position as the original design. The jack reaction seat and the sand bucket are optimized together to be the inner jack-assisted embedded seat 4 and the outer jack-assisted embedded seat 5, which are set on both sides of the annular slide 10. The jack-pushing embedded seat is a device combination that takes into account the emergency response when the traction system cannot work normally or provides additional power for the traction system. It also cooperates with the support leg 7. The support leg 7 resists pressure and the jack-pushing embedded seat resists tension before weighing. When the bridge is cast, they jointly bear the weight of the entire bridge with the main body of the ball joint 3. Similarly, during the construction of the rotating bridge, due to construction errors, the center of gravity cannot always be maintained at the center of the rotating ball joint 3. The deviation of the center of gravity will produce an overturning moment. The jack-pushing embedded seat resists tension and the support leg 3 resists pressure to balance the overturning moment, ensuring the smooth construction of the bridge. The support leg 7 plays a supporting role before weighing, and the support leg is suspended during weighing and rotation. The function of the support leg 7 is the same as the original design. The material of the support leg 7 is optimized to be steel pipe-reinforced concrete material. First, the steel frame 6 is welded to the slide plate 9, and the steel pipe is inserted into the outside of the steel frame 6 and welded to the slide plate 9. It can be installed according to the designed position during installation. At this time, the steel pipe is only used as a template, connected to the upper platform 2 and the slide plate 9 through the steel frame 6, and the concrete is poured into a whole to offset the compressive force before the beam is weighed and the effect during the rotation process. At the same time, the length of the steel frame extending into the upper platform is reduced, and reinforced concrete is used instead, which further reduces the amount of steel used and the interference between the steel components and the upper platform 2 and the steel frame 6 during installation.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A consolidation device for a swivel bridge upper pedestal, comprising a lower pedestal (1), an upper pedestal (2) and a pier, characterized in that: A ball joint (3) is provided in the middle of the lower support platform (1) and the upper support platform (2); an inner jack booster embedded seat (4) is provided on one side of the ball joint (3); an outer jack booster embedded seat (5) is provided on one side of the inner jack booster embedded seat (4); a steel frame (6) is provided in the middle of the inner jack booster embedded seat (4) and the outer jack booster embedded seat (5); a support foot (7) is provided on the lower part of one side of the surface of the steel frame (6); A slide plate (9) is provided on the bottom surface of the rib frame (6), a slideway (10) is provided on the bottom surface of the slide plate (9), a jack (11) and a double I-beam (12) are provided on one side of the support leg (7), a first traction reaction seat (13) and a second traction reaction seat (14) are provided at both ends of the top surface of the lower support platform (1), and a cable member (15) is provided inside the first traction reaction seat (13) and the second traction reaction seat (14).

2. The consolidation device for the upper platform of a rotating bridge according to claim 1, characterized in that: The lower support platform (1) and the upper support platform (2) are spliced ​​and assembled with the ball joint (3); the lower support platform (1) and the upper support platform (2) are spliced ​​and assembled with the inner jack booster embedded seat (4) and the outer jack booster embedded seat (5); the inner jack booster embedded seat (4) and the outer jack booster embedded seat (5) are both I32a I-beam settings.

3. The consolidation device for the upper platform of a rotating bridge according to claim 1, characterized in that: The non-embedded part of the internal jack booster embedded seat (4) is welded with a wide steel plate, the thickness of the wide steel plate is 2 cm and the width is 28 cm. The lower support platform (1) and the steel frame (6) are spliced ​​and assembled, and the steel frame (6) is arranged in a ring shape.

4. The consolidation device for the upper platform of a rotating bridge according to claim 1, characterized in that: The steel frame (6) is fixedly connected to the support legs (7) and the slide plate (9). The support legs (7) are φ820 mm spiral steel pipes arranged in a ring shape. The slide plate (9) is 3 cm thick.

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