Supporting device for bridge swivel construction and using method thereof

Abstract

The invention discloses a supporting device for bridge swivel construction and a using method of the supporting device, and belongs to the technical field of bridge construction. The supporting device for bridge swivel construction comprises an upper supporting foot and a lower supporting foot, the upper supporting foot and an upper rotary table are detachably connected, the upper supporting foot and the lower supporting foot are detachably connected, the lower supporting foot and a lower bearing table are detachably connected, a filling material is arranged between the upper supporting foot and the lower supporting foot, and the filling material can be changed into a liquid state from a solid state during heating. When the filling material is in a solid state, the supporting device plays a role in fixing and supporting a swivel bridge between the upper rotary table and the lower bearing table, and after the filling material is heated and melted into liquid and flows away, the supporting device formed by reconnecting the upper supporting foot and the lower supporting foot plays a role in supporting foot anti-roll safety in the bridge swivel process. According to the supporting device for bridge swivel construction, the temporary fixing and supporting functions and the supporting foot function are integrated, the supporting device can be detached and recycled after bridge swivel is completed, the supporting device is environmentally friendly, and the swivel bridge construction cost is effectively saved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a supporting device for bridge rotation construction and a use method thereof. Background Art

[0002] A rotating bridge is a type of bridge that can rotate. Bridge rotation construction refers to a construction method in which the bridge structure is formed (cast or spliced) at a non-design axis position and then rotated into place. According to the rotation direction of the bridge structure, it can be divided into vertical rotation construction method, horizontal rotation construction method (referred to as vertical rotation method and horizontal rotation method) and a combination of horizontal rotation and vertical rotation, among which the horizontal rotation method is the most widely used.

[0003] The rotation system is the key equipment for the horizontal rotation construction, which consists of the upper turntable and the lower turntable of the ball joint. The upper turntable supports the rotating structures such as the pier body and the beam body, while the lower turntable is connected to the foundation for support and relatively slides with the upper turntable. In order to ensure the safety during the implementation of the bridge rotation, the rotating bridge is constructed by installing support feet and slideways around the rotating ball joint, and laying slide plates between the support feet and the slideways to reduce the friction resistance of rotation. There are two ways to deal with the gap between the support feet and the slideway before the bridge is rotated: one is to fill the gap between the bottom of the support feet and the slideway with clean coarse sand, and the angle steel and the slideway are temporarily welded and sealed around the bottom of the support feet. At this time, the support feet can play a temporary supporting role with limited effect before the rotation; the other is to add a small wedge-shaped steel plate to the bottom of the support feet. At this time, the support feet cannot play a temporary supporting role. However, there are problems with both methods: the dry sand filled with the support feet is not easy to clean after getting wet, and the small wedge-shaped steel blocks are not easy to pull out, which affects the rotation construction.

[0004] In addition, the upper part of the support legs is usually directly buried in the upper turntable, which is basically a one-time use. It only plays an anti-rollover insurance role during the rotation process. Before the rotation, it cannot effectively exert its ability to bear the vertical force, and a temporary locking device is required to bear the vertical force generated by the unbalanced bending moment. The temporary locking device generally uses a temporary sand box plus steel or fine-rolled threaded steel tie rods to form a temporary locking facility, and temporarily and strictly locks the upper turntable and the lower pedestal before the rotation. However, the removal and cutting of the consolidated steel is a large workload, the construction space is narrow, the noise and light pollution are heavy, the construction efficiency is slow, and it is not energy-saving and environmentally friendly, which has a great impact on the environment. The stress of the fine-rolled threaded steel tie rod is suddenly released when the stress is removed, and a collapse effect is likely to occur, which poses a relatively large safety risk. Summary of the invention

[0005] In response to one or more of the above defects or improvement needs in the prior art, the present invention provides a support device for bridge rotation construction, which integrates temporary fixed support and support foot functions, is convenient for dismantling and installation, can improve the construction efficiency of the rotating bridge, shorten the construction period, and effectively save the construction cost of the rotating bridge.

[0006] To achieve the above-mentioned purpose, the present invention provides a support device for bridge rotation construction, which is installed between the upper turntable and the lower bearing platform, and includes an upper support leg and a lower support leg; The upper support leg comprises an upper support leg cylinder, a first cover plate and a second cover plate respectively arranged at the top and bottom of the upper support leg cylinder, and the first cover plate is detachably connected to the upper turntable; The lower support leg includes a lower support leg cylinder, a third cover plate and a fourth cover plate respectively arranged at the top and bottom of the lower support leg cylinder, the fourth cover plate is detachably connected to the lower support platform, the third cover plate is detachably connected to the second cover plate, so that the upper support leg and the lower support leg are butt-jointed, and a filling material is arranged between the second cover plate and the third cover plate, and the filling material can be changed from solid to liquid when heated.

[0007] As a further improvement of the present invention, the cross-section of the upper supporting leg cylinder and / or the lower supporting leg cylinder is rectangular.

[0008] As a further improvement of the present invention, the upper support leg cylinder and / or the lower support leg cylinder is / are arranged with a cross rib at the center position of the rectangle.

[0009] As a further improvement of the present invention, the first cover plate is provided with a pouring hole for pouring concrete into the upper support leg cylinder; and / or, The third cover plate is provided with a pouring hole for pouring concrete into the lower support leg cylinder.

[0010] As a further improvement of the present invention, a pressure sensor is installed inside the filling material.

[0011] As a further improvement of the present invention, the fourth cover plate is provided with an upward curling edge or chamfer along the sliding direction so that the fourth cover plate can slide on the slideway of the lower platform.

[0012] As a further improvement of the present invention, packaging baffles are arranged around the filling material, and the packaging baffles are detachably connected to the second cover plate and the third cover plate respectively.

[0013] As a further improvement of the present invention, the thickness of the filling material is 20 mm to 40 mm.

[0014] Another aspect of the present invention further provides a method for using a support device for bridge rotation construction. The method is implemented using the support device for bridge rotation construction, and comprises the following steps: S1: The lower support leg is detachably connected to the lower support platform through the fourth cover plate, the filling material is placed on the third cover plate of the lower support leg, the upper support leg is detachably connected to the third cover plate through the second cover plate, and then detachably connected to the upper turntable through the first cover plate, and the upper turntable and the lower support platform are temporarily locked; S2: before the upper turntable is ready to rotate, the connection between the fourth cover plate and the lower support platform and the connection between the third cover plate and the second cover plate are removed, the filling material is heated to melt and flow out, and the second cover plate and the third cover plate are reconnected to form a support device consisting of the upper support leg and the lower support leg; S3: The upper turntable rotates together with the supporting device. After the rotation construction is completed, the connection between the first cover plate and the upper turntable is removed, and the supporting device is removed from the upper turntable.

[0015] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The support device for bridge rotation construction of the present invention includes an upper support leg and a lower support leg. The upper support leg and the upper turntable, the upper support leg and the lower support leg, and the lower support leg and the lower pedestal are all detachably connected, so that the connection between the structures is convenient for removal and installation. A filling material is arranged between the upper support leg and the lower support leg. The filling material can change from solid to liquid when heated, so that the support device integrates the functions of temporary fixed support and support leg. When the filling material is solid, the support device plays the role of fixed support for the rotating bridge between the upper turntable and the lower pedestal. When the filling material melts into liquid and flows away, the support device formed by the reconnection of the upper support leg and the lower support leg plays the role of support leg anti-rolling insurance during the bridge rotation process. After the rotation of the rotating system is completed, it can be dismantled and recycled, which reduces the use cost and effectively saves the construction cost of the rotating bridge.

[0017] (2) The support device for bridge rotation construction of the present invention, by setting the cross-section of the upper support leg cylinder and / or the lower support leg cylinder to a rectangular shape, enables the support device to not only withstand the vertical force generated by the bridge eccentric load during the suspended pouring construction of the rotating bridge, but also withstand the unbalanced eccentric load moment of the rotating bridge during the suspended pouring construction, thereby ensuring the structural stability of the rotating bridge during the suspended pouring construction.

[0018] (3) The support device for bridge rotation construction of the present invention arranges cross bars at the center of the upper support leg cylinder and / or the lower support leg cylinder, and pours concrete into the upper support leg cylinder and / or the lower support leg cylinder through the pouring holes to improve the overall stiffness and strength of the upper support leg and / or the lower support leg, thereby enhancing the bearing capacity and structural stability of the support device.

[0019] (4) The support device for bridge rotation construction of the present invention monitors the force on the support device by installing a pressure sensor inside the filling material to observe the stability of the structure during the construction of the rotating bridge.

[0020] (5) The method of using the support device for bridge rotation construction is as follows: before the bridge is rotated, the support device consisting of the upper support leg, the lower support leg and the filling material is installed between the upper turntable and the lower pedestal. The support device can withstand the vertical force generated by the bridge eccentric load during the suspended pouring construction of the rotating bridge, thereby ensuring the overturning stability of the bridge construction; after the filling material melts and flows away, the upper support leg and the lower support leg are reconnected to form a support device, which plays a role in preventing the support leg from rolling during the rotation of the bridge; and after the rotation of the rotating system is completed, the support device is dismantled, so that the upper support leg and the lower support leg can be reused, which is green and environmentally friendly, reduces the use cost, and saves the construction cost of the rotating bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of a support device used for bridge rotation construction in an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross section of AA; Figure 3 yes Figure 1 Schematic diagram of the cross section of the middle BB; Figure 4 is a schematic diagram of the installation of a support device used for bridge rotation construction in an embodiment of the present invention; Figure 5 It is a layout diagram of the bridge rotation system in an embodiment of the present invention.

[0023] In all the drawings, the same figure marks represent the same technical features, specifically: 1. upper support leg; 11. upper support leg cylinder; 12. first cover plate; 13. second cover plate; 2. lower support leg; 21. lower support leg cylinder; 22. third cover plate; 23. fourth cover plate; 3. filling material; 4. cross ribs; 5. pressure sensor; 6. baffle; 100. support device for bridge rotation construction; 200. upper turntable; 300. lower support platform. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Example: See also Figure 1~Figure 5 The support device for bridge rotation construction in the preferred embodiment of the present invention is installed between the upper turntable 200 and the lower support platform 300, and includes an upper support leg 1 and a lower support leg 2. The upper support leg 1 includes an upper support leg cylinder 11, a first cover plate 12 and a second cover plate 13 respectively arranged at the top and bottom of the upper support leg cylinder 11, and the first cover plate 12 is detachably connected to the upper turntable 200; the lower support leg 2 includes a lower support leg cylinder 21, a third cover plate 22 and a fourth cover plate 23 respectively arranged at the top and bottom of the lower support leg cylinder 21, and the fourth cover plate 23 is detachably connected to the lower support platform 300, and the third cover plate 22 is detachably connected to the second cover plate 13, so that the upper support leg 1 and the lower support leg 2 are butted, and a filling material 3 is arranged between the second cover plate 22 and the third cover plate 13, and the filling material 3 can be changed from solid to liquid when heated.

[0030] In this preferred embodiment, the support device composed of the upper support leg 1, the lower support leg 2 and the filling material 3 is installed between the upper turntable 200 and the lower pedestal 300, and can withstand the vertical force generated by the bridge eccentric load during the suspended pouring construction of the rotating bridge, ensuring the overturning stability of the bridge construction; at the same time, the support device is fixedly connected to the lower pedestal 300, and can also resist the wind load torque, solving the problem of supporting and fixing the rotating bridge under the conditions of unbalanced eccentric load torque and wind load horizontal torque during the suspended pouring construction of the rotating bridge. Before the bridge is ready to rotate, the filling material 3 can be heated to melt it into liquid and flow away. At this time, there is a certain gap between the upper support leg 1 and the lower support leg 2. The gap can be adjusted to between the lower support leg 2 and the lower pedestal 300 through a detachable connection, so that the height of the support device formed by the reconnection of the upper support leg 1 and the lower support leg 2 is reduced, and it can rotate with the upper turntable 200 during the bridge rotation process, playing an anti-rollover insurance role, effectively ensuring the safety of the bridge during the rotation process. In addition, detachable connections are adopted between the upper support leg 1 and the upper turntable 200, between the upper support leg 1 and the lower support leg 2, and between the lower support leg 2 and the lower support platform 300, so that the connections between the structures can be easily dismantled and installed. This support device can quickly realize the conversion between the two forms to improve construction efficiency, shorten construction period, and effectively save the construction cost of the rotating bridge.

[0031] Preferably, the detachable connections between the upper support leg 1 and the upper turntable 200 , between the upper support leg 1 and the lower support leg 2 , and between the lower support leg 2 and the lower support platform 300 are bolt connections.

[0032] In a preferred embodiment, the thickness of the filling material 3 is 20 mm to 40 mm. When the filling material 3 melts, the gap between the support device 100 formed by the upper support leg 1 and the lower support leg 2 and the lower pedestal 300 is between 20 mm and 40 mm. On the one hand, it prevents the gap between the support device 100 and the lower pedestal 300 from being too small during the rotation of the bridge, thereby affecting the rotation of the upper turntable 200. On the other hand, it prevents the gap between the support device 100 and the lower pedestal 300 from being too large, thereby limiting the anti-rollover insurance effect during the rotation.

[0033] Preferably, the filling material 3 is made of a thermoplastic polyester mixture, which is a high-load-bearing, low-melting-point solid-liquid conversion material with high strength and good dynamic mechanical properties. It can withstand the vertical force transmitted by the upper support leg 1 and can meet the requirements of temporary support of the support device. It has good melt fluidity and a stable melt state, and can quickly realize the conversion of the support device from a supporting function to an anti-roll function.

[0034] Further preferably, baffles 6 are provided around the filling material 3, and the baffles 6 are detachably connected to the second cover plate 13 and the third cover plate 22 respectively, so as to encapsulate the filling material 3 between the second cover plate 13 and the third cover plate 22 to prevent the filling material 3 from overflowing from the sides of the second cover plate 13 and the third cover plate 22.

[0035] Preferably, the baffle 6 is made of a thermoplastic polyester mixture.

[0036] like Figure 2 , 3 As shown, the cross-section of the upper support leg cylinder 11 and / or the lower support leg cylinder 21 is preferably rectangular. The rectangular support structure formed by aligning the upper support leg cylinder 11 with the lower support leg cylinder 21 can not only withstand the vertical force generated by the eccentric load of the bridge during the suspended pouring construction of the rotating bridge, but also withstand the unbalanced eccentric load moment of the rotating bridge during the suspended pouring construction, thereby ensuring the structural stability of the rotating bridge during the suspended pouring construction.

[0037] Further preferably, the upper support leg cylinder 11 and / or the lower support leg cylinder 21 are arranged with a cross rib 4 at the center position of the rectangle to improve the overall stiffness and strength of the upper support leg 1 and / or the lower support leg 2 and enhance the force-bearing performance of the support device.

[0038] Preferably, the first cover plate 12 is provided with a pouring hole for pouring concrete into the upper support leg cylinder 11 to further improve the bearing capacity and structural stability of the upper support leg 1; preferably, the third cover plate 22 is provided with a pouring hole for pouring concrete into the lower support leg cylinder 21 to further improve the bearing capacity and structural stability of the lower support leg 2.

[0039] Preferably, a pressure sensor 5 is installed inside the filling material 3 to monitor the vertical force between the upper support leg 1 and the lower support leg 2, and further to monitor the stability of the structure during the construction of the rotating bridge.

[0040] Preferably, the fourth cover plate 23 is provided with an upward curling edge or chamfer along the sliding direction so that the fourth cover plate 23 can slide on the slideway of the lower platform 300 .

[0041] In actual use, such as Figure 4 , 5 As shown, the present invention also provides a method for using a supporting device for bridge rotation construction, comprising the following steps: S1: The lower support leg 2 is detachably connected to the lower support platform 300 through the fourth cover plate 23, the filling material 3 is placed on the third cover plate 22 of the lower support leg 2, the upper support leg 1 is detachably connected to the third cover plate 22 through the second cover plate 13, and then detachably connected to the upper turntable 200 through the first cover plate 12, so that the support device 100 used for bridge rotation construction temporarily locks the upper turntable 200 and the lower support platform 300; In this step, the support device 100 plays a role of temporary fixed support during the construction process before the bridge rotates.

[0042] S2: before the upper turntable 200 is ready to rotate, the connection between the fourth cover plate 23 and the lower support 300, and the connection between the third cover plate 22 and the second cover plate 13 are removed, the filling material 3 is heated to melt and flow out, and the second cover plate 13 and the third cover plate 22 are reconnected to form a supporting device consisting of an upper support leg 1 and a lower support leg 2; In this step, the filling material 3 melts and flows away, so that the support device 100 is transformed from being composed of an upper support leg 1, a filling material 3, and a lower support leg 2 to being composed of an upper support leg 1 and a lower support leg 2 in terms of height, and its function is transformed from a supporting role to an anti-rollover insurance role. At this time, there is a certain gap between the lower support leg 2 of the support device 100 and the lower support platform 300; preferably, the filling material 3 is heated by electricity.

[0043] S3: The upper turntable 200 rotates together with the supporting device 100. After the rotation construction is completed, the connection between the first cover plate 12 and the upper turntable 200 is removed, and the supporting device 100 is removed from the upper turntable 200.

[0044] In this step, the support device 100 plays the role of anti-roll insurance for the support legs during the rotation of the bridge, and after the rotation of the rotating system is completed, the support device 100 is removed from the upper turntable 200, so that the upper support legs 1 and the lower support legs 2 can be reused, reducing the cost of use and complying with the concept of green environmental protection.

[0045] The support device for bridge rotation construction of the present invention integrates the functions of temporary fixed support and support legs. It plays the role of fixing the rotating bridge during the construction process before the bridge rotates, and plays the role of support legs to prevent rollover during the bridge rotation process. After the rotation of the rotating system is completed, it can be dismantled and recycled, which reduces the use cost and the number of consolidated steel or precision-rolled threaded steel tie rods and sand boxes required on the construction site.

[0046] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support device for bridge rotation construction, installed between an upper turntable and a lower bearing platform, characterized in that: Including upper support legs and lower support legs; The upper support leg comprises an upper support leg cylinder, a first cover plate and a second cover plate respectively arranged at the top and bottom of the upper support leg cylinder, and the first cover plate is detachably connected to the upper turntable; The lower support leg includes a lower support leg cylinder, a third cover plate and a fourth cover plate respectively arranged on the top and bottom of the lower support leg cylinder, the fourth cover plate is detachably connected to the lower support platform, the third cover plate is detachably connected to the second cover plate, so that the upper support leg and the lower support leg are butt-jointed, and a filling material is arranged between the second cover plate and the third cover plate, and the filling material can be changed from solid to liquid when heated.

2. The supporting device for bridge rotation construction according to claim 1 is characterized in that: The cross section of the upper support leg cylinder and / or the lower support leg cylinder is rectangular.

3. The supporting device for bridge rotation construction according to claim 2 is characterized in that: The upper support leg cylinder and / or the lower support leg cylinder are / is provided with a cross rib at the center position of the rectangle.

4. The supporting device for bridge rotation construction according to claim 1, characterized in that: The first cover plate is provided with a pouring hole for pouring concrete into the upper support leg cylinder; and / or, The third cover plate is provided with a pouring hole for pouring concrete into the lower support leg cylinder.

5. The supporting device for bridge rotation construction according to claim 1, characterized in that: A pressure sensor is installed inside the filling material.

6. The supporting device for bridge rotation construction according to claim 1, characterized in that: The fourth cover plate is provided with an upward curling edge or chamfer along the sliding direction so that the fourth cover plate can slide on the slideway of the lower support platform.

7. The supporting device for bridge rotation construction according to claim 1, characterized in that: Packaging baffles are arranged around the filling material, and the packaging baffles are detachably connected to the second cover plate and the third cover plate respectively.

8. The supporting device for bridge rotation construction according to claim 1, characterized in that: The thickness of the filling material is 20 mm to 40 mm.

9. A method for using a support device for bridge rotation construction, characterized in that: The method of use is implemented by using the support device for bridge rotation construction according to any one of claims 1 to 8, comprising the following steps: S1: The lower support leg is detachably connected to the lower support platform through the fourth cover plate, the filling material is placed on the third cover plate of the lower support leg, the upper support leg is detachably connected to the third cover plate through the second cover plate, and then detachably connected to the upper turntable through the first cover plate, and the upper turntable and the lower support platform are temporarily locked; S2: before the upper turntable is ready to rotate, the connection between the fourth cover plate and the lower support platform and the connection between the third cover plate and the second cover plate are removed, the filling material is heated to melt and flow out, and the second cover plate and the third cover plate are reconnected to form a support device consisting of the upper support leg and the lower support leg; S3: The upper turntable rotates together with the supporting device. After the rotation construction is completed, the connection between the first cover plate and the upper turntable is removed, and the supporting device is removed from the upper turntable.

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