Full heavy support for variable load of bridge

Abstract

The utility model discloses a full -scale heavy support of full -scale heavy support of bridge variable load can be used, including top support device, side frame body device, center frame body device, bottom support subassembly, center frame body device sets up at the bottom of bridge center through top support device, two side frame body devices set up at the both sides of bridge through top support device, two side frame body devices are connected with center frame body device through a plurality of first connecting rod, a plurality of top support devices and a plurality of bottom support subassembly are set up in the upside and downside of side frame body device, center frame body device respectively, top support device includes connecting assembly and hydraulic support subassembly, and hydraulic support subassembly sets up in connecting assembly, the utility model discloses through increasing and reducing support pole node number ( pole body can expand connection) and adjustment inclination support pole angle, adapts to different bridge span and beam height change.

Description

Technical Field

[0001] This utility model belongs to the field of full-span heavy-duty support technology, and in particular relates to a full-span heavy-duty support that can be used for variable loads on bridges. Background Technology

[0002] Current bridge construction scaffolding mainly employs traditional methods such as steel pipe coupler scaffolding, cup-lock scaffolding, or Bailey bridge scaffolding. These technologies generally suffer from insufficient joint stiffness, poor load adaptability, and a lack of real-time adjustment capabilities. Steel pipe coupler scaffolding is prone to loosening and deformation, while cup-lock scaffolding lacks flexibility, making it difficult to adapt to the dynamic load changes of long-span bridges. Traditional scaffolding relies on manual monitoring and adjustment, which cannot respond in real time to load changes during concrete pouring, prestressing tensioning, and other conditions, posing safety hazards. Furthermore, it suffers from low disassembly and assembly efficiency and poor reusability, impacting construction progress and economic benefits. Although improved technologies such as hydraulic jacking and prefabricated scaffolding have emerged in recent years, they still have shortcomings such as asynchronous adjustment and difficulties in high-altitude operations, failing to meet the demands of modern bridge construction for intelligent and high-precision support. Utility Model Content

[0003] In view of this, the present invention aims to provide a full-span heavy-duty support that can be used for variable loads on bridges, in order to solve at least one technical problem in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A full-span heavy-duty scaffolding system for bridges subject to variable loads includes a top support device, side frame devices, a central frame device, and a bottom support assembly. The central frame device is mounted at the bottom of the bridge center via the top support device, and two side frame devices are mounted on both sides of the bridge via the top support device. The two side frame devices are connected to the central frame device via several first connecting rods. Several top support devices and several bottom support assemblies are respectively mounted on the upper and lower sides of the side frame devices and the central frame device. The top support device includes a connecting assembly and a hydraulic support assembly. The hydraulic support assembly is located within the connecting assembly.

[0006] Furthermore, the connecting assembly includes a connecting cylinder and a U-shaped frame, with the U-shaped frame positioned on top of the connecting cylinder;

[0007] The outer wall of the connecting cylinder is provided with a first external thread.

[0008] Furthermore, the hydraulic support assembly includes a hydraulic cylinder, a pressure sensor, and an upper push plate;

[0009] The hydraulic cylinder is installed inside the connecting cylinder, and the output end of the hydraulic cylinder passes through the bottom of the U-shaped frame and is connected to the upper push plate;

[0010] The upper part of the push plate is provided with a first mounting groove. The pressure sensor is installed in the first mounting groove of the push plate. The pressure sensor is electrically connected to the controller, and the hydraulic cylinder is electrically connected to the controller.

[0011] Furthermore, the side frame assembly includes several side frame components;

[0012] Several side frame components are connected along the bridge body direction by several second connecting rods; several side frame components are connected along the direction perpendicular to the bridge body by several third connecting rods.

[0013] The side frame assembly includes a support column, a horizontal support rod, a first inclined support rod, a second inclined support rod, a third inclined support rod, and a fourth inclined support rod;

[0014] The support column is equipped with several evenly distributed mounting rings;

[0015] Four support columns form a rectangular space through several horizontal support rods, with the support columns set perpendicular to the ground;

[0016] The horizontal support rod is installed on the support column via a mounting ring;

[0017] The first inclined support rod is installed at an angle on the two support columns in front of the rectangular space via an installation ring, and the second inclined support rod is installed at an angle on the two support columns behind the rectangular space via an installation ring. The first and second inclined support rods are inclined in opposite directions and at the same angle.

[0018] The third inclined support rod is installed at an angle on the two support columns on the left side of the rectangular space via an installation ring, and the fourth inclined support rod is installed at an angle on the two support columns on the right side of the rectangular space via an installation ring. The inclination directions of the third and fourth inclined support rods are opposite, and their inclination angles are the same.

[0019] Furthermore, the support column includes several rods connected in sequence. The upper part of the rod is provided with a first mounting groove, and the first mounting groove of the rod is provided with a first internal thread corresponding to the first external thread. The lower part of the rod is provided with a second external thread corresponding to the first internal thread.

[0020] Several support columns are threaded connections;

[0021] The support column is connected to the bottom of the connecting cylinder of the connecting assembly through the first mounting slot;

[0022] The support column and the bottom support assembly are connected by threads.

[0023] Furthermore, the mounting ring is provided with a first mounting hole, and the first inclined support rod, the second inclined support rod, the third inclined support rod, the fourth inclined support rod, and the horizontal support rod are provided with second mounting holes corresponding to the first mounting hole.

[0024] Furthermore, the central frame device includes symmetrically arranged central frame components;

[0025] Two central frame components are installed along the horizontal direction of the bridge, and several central frame components are installed along the vertical direction of the bridge via several fourth connecting rods;

[0026] The structure of the central frame assembly is the same as that of the side frame assembly.

[0027] Furthermore, the bottom support assembly includes a base plate and a bottom support rod. The bottom support rod is positioned above the base plate, and a second mounting groove is provided at the top of the bottom support rod. A second internal thread corresponding to the second external thread is provided in the second mounting groove.

[0028] Furthermore, reinforcing rib assemblies are provided on both sides of the bridge, with the two reinforcing rib assemblies arranged symmetrically.

[0029] The reinforcing rib assembly includes a reinforcing rod, one end of which is installed on one side of the bridge and the other end is mounted on the side frame device.

[0030] Compared with existing technologies, the full-span heavy-duty support for bridges with variable loads described in this utility model has the following advantages:

[0031] This application utilizes a symmetrical layout of the central frame and the two side frames, combined with horizontal and inclined support rods (such as the first to fourth inclined support rods), to form a stable triangular stress unit, effectively dispersing the bridge load and reducing local stress concentration. Multi-directional connecting rods (the first to fourth connecting rods) enhance overall rigidity and prevent lateral deformation caused by eccentric loads during construction.

[0032] The support rod of this application adopts threaded connection (the first internal thread and the second external thread are matched), which increases the node stiffness by more than 30% compared with the traditional fastener connection and reduces the risk of loosening.

[0033] 3. The hydraulic cylinder of this application is linked with a pressure sensor to monitor the load distribution at the bottom of the bridge in real time. The controller automatically adjusts the height of the upper push plate to ensure uniform support force. It is suitable for gradual loads during the concrete pouring stage, or instantaneous loads such as wind vibration and mechanical vibration, to avoid overload or support failure.

[0034] 4. This application adapts to different bridge spans and beam height variations by increasing or decreasing the number of support rod sections (the rods can be extended and connected) and adjusting the angle of the inclined support rods. Attached Figure Description

[0035] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0036] Figure 1 This is a cross-sectional schematic diagram of a full-span heavy-duty support frame for bridges that can be used under variable loads, as proposed in this utility model.

[0037] Figure 2 This is a schematic diagram of the top support device proposed in this utility model;

[0038] Figure 3 This is a schematic diagram of the side frame device proposed in this utility model;

[0039] Figure 4 This is a schematic diagram of the mounting ring proposed in this utility model. Attached image description:

[0041] 1. Top support device; 101. Connecting cylinder; 102. U-shaped frame; 103. First external thread; 104. Hydraulic cylinder; 105. Pressure sensor; 106. Upper push plate; 2. Side frame device; 201. Support column; 202. Horizontal support rod; 203. First inclined support rod; 204. Second inclined support rod; 205. Third inclined support rod; 206. Fourth inclined support rod; 207. Mounting ring; 208. First mounting hole; 3. Central frame device; 4. Bottom support assembly; 401. Base plate; 402. Bottom support rod; 5. First connecting rod; 6. Bridge; 7. Second connecting rod; 8. Reinforcing rod; Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] A full-span heavy-duty scaffolding system for bridges subject to variable loads includes a top support device 1, side frame devices 2, a central frame device 3, and a bottom support assembly 4. The central frame device 3 is installed at the bottom center of the bridge 6 via the top support device 1, and the two side frame devices 2 are installed on both sides of the bridge 6 via the top support device 1. The two side frame devices 2 are connected to the central frame device 3 via several first connecting rods 5. Several top support devices 1 and several bottom support assemblies 4 are respectively installed on the upper and lower sides of the side frame devices 2 and the central frame device 3.

[0047] The top support device 1 includes a connecting assembly and a hydraulic support assembly; the hydraulic support assembly is disposed within the connecting assembly. The connecting assembly includes a connecting cylinder 101 and a U-shaped frame 102, the U-shaped frame 102 being disposed on the top of the connecting cylinder 101; a first external thread 103 is provided on the outer wall of the connecting cylinder 101. The hydraulic support assembly includes a hydraulic cylinder 104, a pressure sensor 105, and an upper push plate 106;

[0048] The pressure sensor 105 is model BTA-40T bridge force sensor, and the sensor uses PLC technology.

[0049] Hydraulic cylinder 104 is installed inside connecting cylinder 101. The output end of hydraulic cylinder 104 passes through the bottom of U-shaped frame 102 and is connected to upper push plate 106. The upper part of upper push plate 106 is provided with a first mounting groove. Pressure sensor 105 is installed in the first mounting groove of upper push plate 106. Pressure sensor 105 is electrically connected to controller, and hydraulic cylinder 104 is electrically connected to controller. Side frame device 2 includes several side frame components.

[0050] Several side frame components are connected along the bridge body direction by several second connecting rods 7; several side frame components are connected along the direction perpendicular to the bridge body by several third connecting rods; each side frame component includes a support column 201, a horizontal support rod 202, a first inclined support rod 203, a second inclined support rod 204, a third inclined support rod 205, and a fourth inclined support rod 206; several evenly distributed mounting rings 207 are provided on the support column 201; four support columns 201 form a rectangular space through several horizontal support rods 202, and the support columns 201 are set perpendicular to the ground; the horizontal support rods 202 are mounted on the support column 201 through the mounting rings 207;

[0051] The first inclined support rod 203 is inclinedly mounted on the two support columns 201 in front of the rectangular space via the mounting ring 207. The second inclined support rod 204 is inclinedly mounted on the two support columns 201 behind the rectangular space via the mounting ring 207. The first inclined support rod 203 and the second inclined support rod 204 have opposite inclination directions and the same inclination angle. The third inclined support rod 205 is inclinedly mounted on the two support columns 201 on the left side of the rectangular space via the mounting ring 207. The fourth inclined support rod 206 is inclinedly mounted on the two support columns 201 on the right side of the rectangular space via the mounting ring 207. The third inclined support rod 205 and the fourth inclined support rod 206 have opposite inclination directions and the same inclination angle.

[0052] The support column 201 includes several rods connected in sequence. The upper part of each rod has a first mounting groove, and the first mounting groove contains a first internal thread corresponding to the first external thread 103. The lower part of each rod has a second external thread corresponding to the first internal thread. The support columns 201 are threadedly connected. The support column 201 is connected to the bottom of the connecting cylinder 101 of the connecting assembly through the first mounting groove. The support column 201 is threadedly connected to the bottom support assembly 4. The mounting ring 207 has a first mounting hole 208, and the first inclined support rod 203, the second inclined support rod 204, the third inclined support rod 205, the fourth inclined support rod 206, and the horizontal support rod 202 have second mounting holes corresponding to the first mounting hole 208.

[0053] The central frame device 3 includes symmetrically arranged central frame components; two central frame components are arranged horizontally along the bridge 6, and several central frame components are arranged vertically along the bridge 6 via several fourth connecting rods; the structure of the central frame components is the same as that of the side frame components. The bottom support component 4 includes a base plate 401 and a bottom support rod 402. The bottom support rod 402 is located above the base plate 401, and the top of the bottom support rod 402 is provided with a second mounting groove, and the second mounting groove is provided with a second internal thread corresponding to the second external thread. Reinforcing rib components are provided on both sides of the bridge 6, and the two reinforcing rib components are symmetrically arranged; the reinforcing rib components include reinforcing rods 8, one end of which is installed on one side of the bridge 6, and the other end is located on the side frame device 2.

[0054] In the specific steps:

[0055] Step 1: Frame assembly and setup;

[0056] Foundation treatment and bottom support installation: Before construction, the foundation is compacted to ensure a bearing capacity of ≥150kPa; the precast base plate 401 is positioned at the design spacing (usually 1.5~2m) and fixed with anchor bolts; the bottom support rod 402 is connected to the base plate by threads, and the verticality deviation is controlled within ≤1 / 500.

[0057] Step 2: Assembly of the central frame assembly 3:

[0058] The segmented support rods 201 are connected section by section with threads (each section has a standard length of 2m), and the verticality is calibrated using a level. The horizontal support rod 202 and the first inclined support rod 203, second inclined support rod 204, third inclined support rod 205, and fourth inclined support rod 206 are then installed.

[0059] First, fix the support columns 201 at the four corners of the rectangular frame, and then install the horizontal bars (spacing ≤ 1.2m); the inclined support bars are arranged in a 45°~60° cross pattern and locked to the support columns 01 by the installation rings 207; a fourth connecting bar is set every 3m along the longitudinal direction of the bridge to enhance the overall stability.

[0060] Step 3:

[0061] The side frame device 2 is symmetrically arranged: the side frame components are built synchronously with the central frame and are connected laterally by the first connecting rod 5 (spacing ≤ 2m); one end of the reinforcing rib component 8 is fixed to the side wall of the bridge with chemical anchors, and the other end is hinged to the side frame to form an anti-lateral displacement system.

[0062] Step 4:

[0063] Top support device installation: Screw the connecting cylinder 101 into the threaded interface at the top of the support column 201; the hydraulic cylinder 104 is embedded in the connecting cylinder, and a 5-10mm gap is reserved between the upper push plate 106 and the bottom formwork of the bridge; the pressure sensor 105 is installed in the groove of the upper push plate, and the signal line is connected to the controller (the controller adopts existing PLC technology).

[0064] Hydraulic system commissioning and load control: System initialization: Start the hydraulic cylinder and check the hydraulic cylinder stroke point by point (usually adjustable from 0 to 200 mm); set the initial pre-pressure through the controller (generally 20% of the design load).

[0065] Dynamic leveling: During concrete pouring, pressure sensors monitor the load in real time, and the controller automatically adjusts the output of the hydraulic cylinder to ensure that the difference in support force at each point is ≤5%.

[0066] Start the hydraulic cylinder and adjust the height of the upper push plate to ensure a uniform distribution of the pressure sensor readings (105). Set the load threshold via the controller; the system will automatically alarm and adjust the hydraulic support force in case of overload.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A full-span heavy-duty scaffolding that can be used for variable loads on bridges, characterized in that: Includes top support device, side frame device, central frame device, and bottom support assembly; The central frame is installed at the bottom of the center of the bridge via a top support device, and the two side frame devices are installed on both sides of the bridge via top support devices. The two side frame devices are connected to the central frame device through several first connecting rods; Several top support devices and several bottom support components are respectively installed on the upper and lower sides of the side frame device and the central frame device; The top support device includes a connecting assembly and a hydraulic support assembly; the hydraulic support assembly is disposed within the connecting assembly.

2. The full-span heavy-duty scaffolding for bridges under variable loads as described in claim 1, characterized in that: The connecting assembly includes a connecting cylinder and a U-shaped frame, with the U-shaped frame positioned at the top of the connecting cylinder; The outer wall of the connecting cylinder is provided with a first external thread.

3. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 2, characterized in that: The hydraulic support assembly includes a hydraulic cylinder, a pressure sensor, and an upper push plate; The hydraulic cylinder is installed inside the connecting cylinder, and the output end of the hydraulic cylinder passes through the bottom of the U-shaped frame and is connected to the upper push plate; The upper part of the push plate is provided with a first mounting groove. The pressure sensor is installed in the first mounting groove of the push plate. The pressure sensor is electrically connected to the controller, and the hydraulic cylinder is electrically connected to the controller.

4. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 1, characterized in that: The side frame assembly includes several side frame components; Several side frame components are connected along the bridge body direction by several second connecting rods; several side frame components are connected along the direction perpendicular to the bridge body by several third connecting rods. The side frame assembly includes a support column, a horizontal support rod, a first inclined support rod, a second inclined support rod, a third inclined support rod, and a fourth inclined support rod; The support column is equipped with several evenly distributed mounting rings; Four support columns form a rectangular space through several horizontal support rods, with the support columns set perpendicular to the ground; The horizontal support rod is installed on the support column via a mounting ring; The first inclined support rod is installed at an angle on the two support columns in front of the rectangular space via an installation ring, and the second inclined support rod is installed at an angle on the two support columns behind the rectangular space via an installation ring. The first and second inclined support rods are inclined in opposite directions and at the same angle. The third inclined support rod is installed at an angle on the two support columns on the left side of the rectangular space via an installation ring, and the fourth inclined support rod is installed at an angle on the two support columns on the right side of the rectangular space via an installation ring. The inclination directions of the third and fourth inclined support rods are opposite, and their inclination angles are the same.

5. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 4, characterized in that: The support column includes several rods connected in sequence. The upper part of the rod is provided with a first mounting groove, and the first mounting groove of the rod is provided with a first internal thread corresponding to the first external thread. The lower part of the rod is provided with a second external thread corresponding to the first internal thread. Several support columns are threaded connections; The support column is connected to the bottom of the connecting cylinder of the connecting assembly through the first mounting slot; The support column and the bottom support assembly are connected by threads.

6. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 5, characterized in that: The mounting ring has a first mounting hole, and the first inclined support rod, the second inclined support rod, the third inclined support rod, the fourth inclined support rod, and the horizontal support rod have second mounting holes corresponding to the first mounting hole.

7. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 6, characterized in that: The central frame assembly includes symmetrically arranged central frame components; Two central frame components are installed along the horizontal direction of the bridge, and several central frame components are installed along the vertical direction of the bridge via several fourth connecting rods; The structure of the central frame assembly is the same as that of the side frame assembly.

8. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 1, characterized in that: The bottom support assembly includes a base plate and a bottom support rod. The bottom support rod is positioned above the base plate, and the top of the bottom support rod has a second mounting groove. The second mounting groove has a second internal thread corresponding to the second external thread.

9. A full-span heavy-duty scaffolding for bridges under variable loads as described in claim 1, characterized in that: The bridge is equipped with reinforcing rib assemblies on both sides, with the two reinforcing rib assemblies arranged symmetrically. The reinforcing rib assembly includes a reinforcing rod, one end of which is installed on one side of the bridge and the other end is mounted on the side frame device.

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