Bridge swivel device

Abstract

The utility model is applicable to the technical field of bridge swivel construction, and provides a bridge swivel device, an upper spherical hinge in the bridge swivel device is fixedly connected with an upper turntable of a pier, a lower spherical hinge is fixedly arranged on a lower bearing platform, an annular slideway is arranged around the spherical hinges, supporting legs are uniformly arranged along the annular slideway, one end of each supporting leg is in sliding connection with the annular slideway, and the other end of each supporting leg is in sliding connection with the annular slideway. A first shear-resistant steel plate is arranged on the lower bearing platform on the periphery of the lower spherical hinge, a second shear-resistant steel plate is arranged on the upper rotating disc on the periphery of the upper spherical hinge, a first shear-resistant groove is formed in the first shear-resistant steel plate, and a second shear-resistant groove is formed in the second shear-resistant steel plate. The first shear-resistant groove and the second shear-resistant groove are aligned and form a mortise in a surrounding mode, the mortise block is matched with the mortise, and the mortise block can be inserted into the mortise so that the first shear-resistant steel plate and the second shear-resistant steel plate can not move relative to each other. The problem that an existing bridge swivel device cannot resist torsional force and shearing force generated under the earthquake effect can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of bridge rotation construction, and in particular relates to a bridge rotation device. Background Art

[0002] Traditional bridge rotation uses ball joints as active pulleys during rotation construction to guide the bridge rotation construction into place, and concrete is used to seal it after the rotation is completed. However, since the ball joint is essentially a movable connection, when encountering earthquake activity, the construction joint position of the ball joint is easily affected by the earthquake's transverse and longitudinal waves to generate torsional and shear forces, thereby affecting the quality of the bridge.

[0003] Therefore, during the bridge rotation construction process, it is extremely important to design a device based on the traditional ball joint to resist the torsional force and shear force generated by earthquakes. Utility Model Content

[0004] The present application provides a bridge rotating device, which can solve the problem that the existing bridge rotating device cannot resist the torsional force and shear force generated by earthquake.

[0005] The present application provides a bridge rotation device, including a ball joint, an annular slide, a mortise and a plurality of support legs, the ball joint including a lower ball joint and an upper ball joint that are rotatably connected to each other, the upper ball joint is fixedly connected to the upper turntable of the bridge pier, the lower ball joint is fixedly arranged on the lower supporting platform, the annular slide is arranged around the ball joint, the support legs are evenly arranged along the annular slide, and one end of each support leg is slidably connected to the annular slide, and the other end is fixedly connected to the upper turntable, a first shear steel plate is arranged on the lower supporting platform around the lower ball joint, a second shear steel plate is arranged on the upper turntable around the upper ball joint, a first truncated cone-shaped shear groove is arranged on the first shear steel plate, and a second truncated cone-shaped shear groove is arranged on the second shear steel plate, when the bridge rotation is completed, the first shear groove is aligned with the second shear groove and surrounded to form an hourglass-shaped mortise and tenon, the mortise is adapted to the mortise, and the mortise can be inserted in the mortise so that the first shear steel plate and the second shear steel plate do not move relative to each other.

[0006] Optionally, the first shear resistant steel plate and the second shear resistant steel plate are both cylindrical and coaxially arranged, and the ball joint is located in a space formed by the first shear resistant steel plate and the second shear resistant steel plate.

[0007] Optionally, in the circumferential direction of the annular slideway, two adjacent supporting legs are connected by a connecting steel plate.

[0008] Optionally, the connecting steel plate is arc-shaped, and the centroid of the connecting steel plate is coaxial with the spherical center of the lower spherical joint.

[0009] Optionally, a first limiting portion is provided on two of the multiple supporting legs, and a second limiting portion is provided on the annular slide. During the rotation of the upper turntable relative to the lower support platform, the first limiting portion can be offset against the second limiting portion at the rotation limit position of the upper turntable.

[0010] Optionally, the two first limiting portions are respectively arranged on two supporting legs which are spaced 180° apart in the circumferential direction of the annular slideway.

[0011] Optionally, the number of legs is 8.

[0012] Optionally, a stiffening steel plate is provided on the support leg, and the plane where the stiffening steel plate is located is parallel to the plane where the annular slideway is located.

[0013] Optionally, the stiffening steel plate is arc-shaped, and the centroid of the stiffening steel plate is coaxial with the spherical center of the lower spherical joint.

[0014] The above solution of the present application has the following beneficial effects:

[0015] In the present application, the upper ball joint and the lower ball joint that are rotatably connected to each other in the ball joint serve as the main device of the bridge rotation. The annular slide and the support legs arranged on this basis can reduce the load at the ball joint. The first shear groove and the second shear groove arranged on the first shear steel plate and the second shear steel plate form an hourglass-shaped mortise after alignment. The mortise blocks are arranged in the mortise and welded to prevent the first shear steel plate and the second shear steel plate from moving relative to each other. When an earthquake occurs, the first shear steel plate and the second shear steel plate will bear most of the torsional force and shear force, thereby reducing the torsional force and shear force caused by seismic waves at the ball joint.

[0016] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic top view of the bridge rotating device provided in this application;

[0019] Figure 2 A schematic top view of the bridge rotation device provided in the present application when the bridge rotation is completed;

[0020] Figure 3 A schematic diagram of a first shear steel plate, a second shear steel plate, a mortise and tenon provided in the present application;

[0021] Figure 4 A side schematic view of the bridge rotation device provided in this application.

[0022] [Description of Reference Numerals]

[0023] 1. Ball joint; 2. Annular slide; 21. Second limiting part; 3. Support foot; 31. First limiting part; 32. Reinforcing steel plate; 4. First shear steel plate; 41. First shear groove; 5. Second shear steel plate; 51. Second shear groove; 6. Tenon; 7. Mortise; 8. Connecting steel plate. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0030] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0031] At present, when encountering earthquake activities, the construction joint position of the ball hinge is easily affected by the transverse and longitudinal waves of the earthquake, generating torsional force and shear force, thus affecting the quality of the bridge.

[0032] In view of the above problems, the present application provides a bridge rotation device, such as Figure 1 and Figure 3 As shown, the bridge swivel device includes a ball joint 1, an annular slide 2, a mortise 7 and a plurality of legs 3. The ball joint 1 includes a lower ball joint (not shown in the figure) and an upper ball joint (not shown in the figure) which are rotatably connected to each other. The upper ball joint is fixedly connected to an upper turntable (not shown in the figure) of the pier. The lower ball joint is fixedly arranged on a lower support platform (not shown in the figure). The annular slide 2 is arranged around the ball joint. The legs 3 are evenly arranged along the annular slide 2. One end of each leg 3 is slidably connected to the annular slide 2, and the other end is fixedly connected to the upper turntable. The lower ball joint has four A first shear steel plate 4 is arranged on the lower supporting platform of the bridge, and a second shear steel plate 5 is arranged on the upper turntable around the upper ball joint. A first truncated cone-shaped shear groove 41 is arranged on the first shear steel plate 4, and a second truncated cone-shaped shear groove 51 is arranged on the second shear steel plate 5. When the rotation of the bridge is completed, the first shear groove 41 is aligned with the second shear groove 51 and surrounded to form an hourglass-shaped tenon 6. The mortise 7 is matched with the tenon 6, and the mortise 7 can be inserted into the tenon 6 to prevent the first shear steel plate 4 and the second shear steel plate 5 from relative movement.

[0033] In the present application, the upper ball joint and the lower ball joint rotatably connected to each other in the ball joint 1 serve as the main device of the bridge rotation body. The annular slide 2 and the support leg 3 arranged on this basis can reduce the load at the ball joint 1. The first shear groove 41 and the second shear groove 51 arranged on the first shear steel plate 4 and the second shear steel plate 5 form an hourglass-shaped mortise and tenon 6 after alignment. The mortise block 7 is arranged in the mortise and tenon 6 and welded to prevent the first shear steel plate 4 and the second shear steel plate 5 from moving relative to each other. When an earthquake occurs, the first shear steel plate 4 and the second shear steel plate 5 will bear most of the torsional force and shear force, thereby reducing the torsional force and shear force caused by the earthquake wave at the ball joint 1.

[0034] The determination of completion of the above-mentioned bridge rotation can be determined based on the construction situation. When the bridge has rotated to the required angle, the bridge rotation can be considered completed. After the bridge rotation is completed, subsequent construction such as concrete grouting can be carried out on the bridge rotation device to connect the lower pedestal and the upper turntable into a whole.

[0035] It should be noted that when the rotation of the bridge is completed, concrete pouring and sealing can be carried out. When there is a certain distance between the first shear steel plate 4, the second shear steel plate 5 and the ball joint 1, concrete can be poured into the space between the ball joint 1 and the first shear steel plate 4, the second shear steel plate 5 and the ball joint 1 through the mortise and tenon 6.

[0036] In some embodiments of the present application, Figure 3 As shown, the first shear steel plate 4 and the second shear steel plate 5 are fitted with the edge of the ball joint 1 to enhance the shear resistance of the bridge swivel device. The mortise 7 is arranged in the tenon 6 to form a shear device. This design can effectively increase the overall shear strength of the bridge swivel device and resist the shear force caused by transverse and longitudinal waves in seismic activities. The tenon 6 and the mortise 7 are in an hourglass shape, and the lateral dimensions of the top and bottom of the tenon 6 and the mortise 7 are one steel plate thicker than the lateral dimensions of the middle of the tenon 6 and the mortise 7. The width of the middle of the tenon 6 and the mortise 7 should be calculated based on the material of the dovetail tenon steel block, the earthquake intensity, and the number of dovetail tenons set, and should not be less than 8 cm.

[0037] In some embodiments of the present application, the first shear steel plate 4 and the second shear steel plate 5 are both cylindrical and coaxially arranged, and the ball joint 1 is located in the space enclosed by the first shear steel plate 4 and the second shear steel plate 5 .

[0038] The first shear-resistant steel plate 4 and the second shear-resistant steel plate 5 are both cylindrical and coaxially arranged, so that the torsional force and the shear force in the earthquake activity can be dispersed more evenly.

[0039] In some embodiments of the present application, Figure 1 , 2 and Figure 4As shown, in the circumferential direction of the annular slideway 2, two adjacent support legs 3 are connected by a connecting steel plate 8.

[0040] The connecting steel plate 8 connects the supporting legs 3, and can bear part of the torsional force and shear force through the connecting steel plate 8 during earthquake activities.

[0041] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the connecting steel plate 8 is arc-shaped, and the centroid of the connecting steel plate 8 is coaxial with the spherical center of the lower spherical joint.

[0042] The connecting steel plate 8 is configured to be an arc shape coaxial with the spherical center of the lower spherical joint, so that the torsional force and shear force exerted on the connecting steel plate 8 during earthquake activity can be more evenly dispersed.

[0043] In some embodiments of the present application, Figure 1 and Figure 2 As shown, a first limiting portion 31 is provided on two of the multiple legs 3, and a second limiting portion 21 is provided on the annular slide 2. During the rotation of the upper turntable relative to the lower support platform, the first limiting portion 31 can be offset against the second limiting portion 21 at the rotation limit position of the upper turntable.

[0044] The first limiting portion 31 and the second limiting portion 21 are used to rotate the bridge within a preset angle and prevent the bridge from being excessively twisted.

[0045] In some embodiments of the present application, as shown in the figure, two first limiting portions 31 are respectively arranged on two supporting legs 3 spaced 180° apart in the circumferential direction of the annular slideway 2 .

[0046] The two first limiting portions 31 are respectively arranged on two supporting legs 3 which are spaced 180° apart in the circumferential direction of the annular slideway 2, so as to prevent the bridge from rotating at an angle exceeding 180°.

[0047] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the number of the legs 3 is eight.

[0048] The number of the legs 3 can be set according to the needs and the limiting angle of the bridge swivel.

[0049] In some embodiments of the present application, Figure 4 As shown, a stiffening steel plate 32 is provided on the support leg 3, and the plane where the stiffening steel plate 32 is located is parallel to the plane where the annular slideway 2 is located.

[0050] The reinforcing steel plate 32 has the functions of enhancing the structural strength, preventing the support leg 3 from cracking, and preventing the support leg 3 from deforming to improve safety.

[0051] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the stiffening steel plate 32 is arc-shaped, and the centroid of the stiffening steel plate 32 is coaxial with the spherical center of the lower spherical joint.

[0052] The arc-shaped reinforcing steel plate 32 can transfer the prestress to the concrete more evenly, and during an earthquake, the arc-shaped steel plate can produce a certain elastic deformation to absorb vibration energy.

[0053] The following is an exemplary description of the installation process of the bridge rotation device provided in this application:

[0054] First, install the lower ball joint and install the positioning frame of the leveled lower ball joint to ensure that the relative height difference of the plane of the positioning frame is no more than 5mm. Then hoist and install the lower ball joint with a diameter of 3m. Use the fine-thread bolts on the positioning frame to make precise adjustments to ensure that the height difference between any two points on the plane of the positioning frame is no more than 1mm. Ensure that the rotation center of the ball joint 1 is at the preset position and that the longitudinal and lateral errors are within ±1mm.

[0055] Then, install the bracket and the annular slide 2. Since the diameter of the annular slide 2 is larger than the pier width of the bridge pier, a supporting bracket is required to ensure the stability of the annular slide 2. After the supporting bracket is set, the annular slide 2 with a center diameter of 7.5m is hoisted in sections, and the supporting bracket is adjusted to make the annular slide horizontal, and the local flatness error of the top of the annular slide 2 cannot exceed 0.5mm, and the height difference between any two points of the annular slide 2 within any 3m diameter is not greater than 1mm. In order to achieve the limitation of the bridge rotation, a first limiting portion 31 is provided on the support leg 3, and correspondingly, a second limiting portion 21 is provided on the inner annular slide 2.

[0056] Subsequently, the traction reaction seat is cast. After the lower ball joint and the annular slide 2 are installed, the remaining steel bars extending from the lower pedestal are tied, and concrete is cast at the remaining steel bars of the lower pedestal to complete the casting of the traction reaction seat.

[0057] Then insert a steel cylinder with a diameter of 310mm into the pin sleeve of the lower turntable, and then insert a solid positioning pin with a diameter of 270mm and a length of 111cm to facilitate the positioning of the lower ball joint and the upper ball joint.

[0058] Clean the spherical surface of the lower ball joint, set a polytetrafluoroethylene plate on the surface of the lower ball joint to reduce the friction between the upper and lower ball joints, and then add silicone grease to the polytetrafluoroethylene plate to fill the gap of the polytetrafluoroethylene plate on the lower ball joint.

[0059] Then install the upper turntable and traction rope. The upper ball joint is connected to the upper turntable through a steel casing. The upper ball joint is hoisted as a whole and positioned by the positioning pin to ensure that the upper ball joint and the lower ball joint fit closely. Then try to rotate the upper ball joint three to five times to accurately locate the rotation axis of the upper and lower ball joints to ensure that the rotation axis of the upper and lower ball joints coincide with each other, with an error of no more than 1mm. Then temporarily lock the upper and lower ball joints and wrap them with tape for sealing protection.

[0060] Eight groups of legs 3 are evenly arranged on the upper turntable toward the annular slide 2 to keep the rotating structure stable. Two groups of legs 3 are provided with leg limit blocks, and two corresponding limit blocks are provided on the annular slide 2. The legs 3 and the limit blocks on the legs 3 rotate as the bridge rotates. After the limit blocks on the legs 3 are completely offset against the limit blocks on the annular slide 2, the bridge completes the rotation (or as required, the bridge has completed the rotation when the limit blocks on the legs 3 are not in contact with the limit blocks on the annular slide 2). The limit blocks allow the bridge to rotate only within a preset angle to prevent the bridge from rotating excessively.

[0061] By prefabricating the first shear groove 41 and the second shear groove 51, the first shear steel plate 4 and the second shear steel plate 5 can be positioned. After turning into place, the mortise and tenon 7 are connected to the tenon groove 6 by welding, and the shear structure is further strengthened by the connecting steel plate 8 between the support legs 3, so that each support leg 3 is connected to form an integral shear structure, thereby achieving shear reinforcement of the bridge.

[0062] Then install the template of the upper turntable of the bridge, weld the positioning pin shaft to the steel casing, tie the steel bars set in the upper turntable template, set the steel strand traction rope to connect the external traction device, pour concrete in the upper turntable template to realize the molding of the upper turntable and facilitate the subsequent construction of the upper bridge piers. The above traction rope can provide tension in the rotation direction of the bridge swivel device to prevent the bridge from reversing due to earthquakes.

[0063] The pier and support of the upper pier are constructed. After the upper turntable is constructed, the upper five-meter bridge pier will be constructed.

[0064] After the bridge rotation is completed, concrete is poured in the bridge rotation device to connect the lower pedestal and the upper turntable into a whole.

[0065] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A bridge rotation device, It is characterized in that The sprocket wheel is annularly fixed to the top of the sprocket wheel, and the sprocket wheel is connected with the hook at two ends thereof. The sprocket wheel is connected with the hook at two ends thereof. The sprocket wheel is connected with the hook at two ends thereof.

2. The bridge rotating device according to claim 1, It is characterized in that The first shear-resistant steel plate and the second shear-resistant steel plate are both cylindrical and coaxially arranged, and the ball joint is located in a space surrounded by the first shear-resistant steel plate and the second shear-resistant steel plate.

3. The bridge rotating device according to claim 1, It is characterized in that In the circumferential direction of the annular slideway, two adjacent support legs are connected by a connecting steel plate.

4. The bridge rotating device according to claim 3, It is characterized in that The connecting steel plate is arc-shaped, and the centroid of the connecting steel plate is coaxial with the spherical center of the lower spherical joint.

5. The bridge rotating device according to claim 1, It is characterized in that A first limiting portion is provided on two of the plurality of supporting legs, and a second limiting portion is provided on the annular slide. During the rotation of the upper turntable relative to the lower support platform, the first limiting portion can be offset against the second limiting portion at the rotation limit position of the upper turntable.

6. The bridge rotating device according to claim 5, It is characterized in that The two first limiting portions are respectively arranged on the two supporting legs which are spaced 180° apart in the circumferential direction of the annular slideway.

7. The bridge rotating device according to claim 1, It is characterized in that The number of the supporting legs is 8.

8. The bridge rotating device according to claim 1, It is characterized in that A stiffening steel plate is provided on the support leg, and the plane where the stiffening steel plate is located is parallel to the plane where the annular slideway is located.

9. The bridge rotating device according to claim 8, It is characterized in that The reinforcing steel plate is arc-shaped, and the centroid of the reinforcing steel plate is coaxial with the spherical center of the lower spherical joint.

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