A continuous beam support pre-press construction device and a pre-press construction method thereof

Abstract

The application provides a continuous beam support pre-press construction device, which comprises a construction device body, the construction device body comprises a loading top plate, a loading assembly, a water injection assembly and a measuring mechanism, the loading assembly is placed on the surface of the loading top plate, the bottom end of the loading top plate is provided with a pier column, the side edge of the pier column is installed with a support body, the top of the support body is fixedly connected with the bottom end of the loading top plate, the top of the loading assembly is provided with the water injection assembly, and each loading assembly is composed of multiple independent water tanks, the construction device and method ensure that the supports in different areas of the bottom will not be subjected to large pressure difference in the pre-press construction stage, so that the difference in subsidence is avoided, the accuracy of the measurement result is higher, a three-stage measurement process is adopted, the water body can be quickly discharged after the measurement is completed through the structure, the early construction layout and the later removal work are facilitated, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a continuous beam support preloading construction device and its preloading construction method. Background Technology

[0002] Continuous beam supports typically use steel pipes as load-bearing columns, along with bottom crossbeams, distribution longitudinal beams, and formwork to form a base slab system. After construction, a pre-stressing test is required to eliminate inelastic deformation of the support and foundation. The elastic deformation value of the support is used as a basis for pre-installed camber, and foundation settlement is measured, providing empirical data for similar bridge construction. Existing technologies use sandbags, precast blocks, or jacks to apply reaction force for pre-stressing. However, in the preparation phase, the time lag in setting up the loading equipment leads to uneven loading pressure on different areas of the support's top platform. This results in differences in settlement depth at different locations at the bottom of the support from the initial setup stage, causing errors even after pre-stressing and affecting measurement accuracy. Furthermore, existing loading equipment is heavy, making construction time-consuming and labor-intensive. Even after pre-stressing measurements, the equipment needs to be dismantled, which also consumes considerable time, resulting in slow construction efficiency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a continuous beam support preloading construction device and its preloading construction method to solve the problems mentioned in the background art. The present invention can achieve the effect of synchronous and stable increase of pressure in the measurement area from the preloading construction stage, which improves construction efficiency and shortens the construction cycle.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a continuous beam support preloading construction device, comprising a construction device body, the construction device body including a loading top plate, a loading component, a water injection component, and a measuring mechanism. The loading component is placed on the surface of the loading top plate, a pier is provided at the bottom end of the loading top plate, a support body is installed on the side of the pier, the top of the support body is fixedly connected to the bottom end of the loading top plate, a water injection component is provided at the top of the loading component, and each loading component consists of multiple independent water tanks. The water injection component passes through the top of each independent water tank, and the front end of the water injection component is connected to an external water injection device. A measuring mechanism is provided on the side of the loading component, a settlement rod is installed at the bottom end of the measuring mechanism, the settlement rod passes downward through the surface of the loading top plate, and the bottom end of the measuring mechanism is buried underground.

[0005] Furthermore, the loading component includes an independent water tank and a pressure-stabilizing pipe. The interior of the independent water tank is provided with a primary loading cavity, a secondary loading cavity, and a tertiary loading cavity from bottom to top. The outer sides of the primary loading cavity, the secondary loading cavity, and the tertiary loading cavity are all connected to pressure-stabilizing pipes. The end of the pressure-stabilizing pipe is connected to the top of the measuring mechanism. The top of the independent water tank is provided with a docking column, and the water injection component passes through the interior of the docking column.

[0006] Furthermore, a partition is provided between the primary loading cavity, the secondary loading cavity, and the tertiary loading cavity, and a connecting port is provided in the middle of the partition, with a float valve installed at the bottom of the connecting port.

[0007] Furthermore, the water injection assembly includes a water injection pipe and a diversion pipe. The diversion pipe is installed inside the docking column, and both ends of the diversion pipe extend out from the side of the docking column. Both ends of the diversion pipe are provided with flanges.

[0008] Furthermore, both ends of the diversion pipe are connected to the external water injection pipe through corresponding flanges, and the top of the diversion pipe is provided with a water inlet, which is connected to the interior of the three-stage loading cavity.

[0009] Furthermore, the measuring mechanism includes a central pipe, a settlement rod, and a hollow sleeve. The surface of the central pipe is provided with multiple docking holes, and an anchor plate is provided at the bottom end of the central pipe. The settlement rod is fixedly installed at the bottom end of the anchor plate, and the hollow sleeve is provided at the bottom end of the settlement rod.

[0010] Furthermore, valves are installed on the surface of the pressure-stabilizing pipes, and each pressure-stabilizing pipe is connected to the corresponding docking hole in a horizontal position.

[0011] Furthermore, the bottom end of the hollow sleeve is inserted into the ground, a horizontal pressure plate is provided on the outer top of the hollow sleeve, a measuring rod is provided inside the hollow sleeve, a measuring channel is opened at the bottom end of the settlement rod, the measuring rod passes through the inside of the measuring channel, a drainage pipe is provided at the top of the measuring channel, and the settlement rod area between the drainage pipe and the measuring channel is a solid structure.

[0012] A method for preloading a continuous beam support, using the aforementioned device, comprises the following steps: Step 1: Fixing both the measuring mechanism and the loading assembly onto the loading top plate; Step 2: Recording the initial settlement position displayed by the measuring mechanism under no-load conditions, and injecting water into the loading assembly through the water injection component until the primary loading cavity is filled; Step 3: Recording the settlement state displayed at the bottom of the measuring mechanism under this condition; Step 4: Repeating the above steps to perform secondary and tertiary preloading measurements; Step 5: Draining all water, measuring the elastic deformation, and dismantling the loading assembly and the measuring mechanism.

[0013] Furthermore, in step one, the top of the measuring mechanism is fixedly connected to the surface of the loading top plate through an anchor plate, and the bottom of the measuring mechanism is buried in the ground near the support body. In step three, if the settlement data displayed by different measuring mechanisms are significantly different, the placement position of the loading component and the water volume in the internal primary loading cavity should be calibrated and tested.

[0014] The beneficial effects of the present invention: The present invention provides a continuous beam support preloading construction device and its preloading construction method, comprising a pier, support body, loading top plate, loading component, water injection component, measuring mechanism, water injection pipe, connecting column, independent water tank, primary loading cavity, secondary loading cavity, tertiary loading cavity, pressure stabilizing pipe, valve, centralized pipe, anchor plate, settlement rod, connecting hole, drainage pipe, hollow sleeve, horizontal pressure plate, measuring rod, measuring channel, diversion pipe, flange, water inlet, connecting port, and float valve.

[0015] 1. The continuous beam support preloading construction device and its preloading construction method achieve the effect of preloading by simultaneously injecting water into each loading component through the water injection component. This ensures that the support in different areas at the bottom will not be subjected to large pressure differences during the early stage of preloading, which would lead to differences in bottom settlement and make the results of subsequent measurements more accurate.

[0016] 2. The continuous beam support preloading construction device and its preloading construction method can read the settlement data generated by the measuring mechanism by reading the movement position of the measuring rod inside the measuring channel. The measurement results obtained by this measurement method can better reflect the settlement state of the support part in the area after being subjected to preloading.

[0017] 3. The continuous beam support preloading construction device and its preloading construction method adopt a three-stage measurement process. This structure enables the water to be discharged quickly after the measurement is completed, reducing the weight of the loading components, facilitating the early construction layout and the later dismantling work, and improving the construction efficiency. Attached Figure Description

[0018] Figure 1 A flowchart illustrating the external shape of a continuous beam support preloading construction method according to the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of a continuous beam support preloading construction device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the loading component structure of a continuous beam support preloading construction device according to the present invention;

[0021] Figure 4 This is a schematic diagram of the measuring mechanism of a continuous beam support preloading construction device according to the present invention;

[0022] Figure 5 This is a cross-sectional view of the interior of an independent water tank in a continuous beam support preloading construction device according to the present invention;

[0023] In the diagram: 1. Pier; 2. Support body; 3. Loading top plate; 4. Loading assembly; 5. Water injection assembly; 6. Measuring mechanism; 7. Water injection pipe; 8. Connecting column; 9. Independent water tank; 10. Primary loading cavity; 11. Secondary loading cavity; 12. Tertiary loading cavity; 13. Pressure stabilizing pipe; 14. Valve; 15. Centralized pipe; 16. Anchor plate; 17. Settlement rod; 18. Connecting hole; 19. Drainage pipe; 20. Hollow sleeve; 21. Horizontal pressure plate; 22. Measuring rod; 23. Measuring channel; 24. Diversion pipe; 25. Flange; 26. Inlet; 27. Connecting port; 28. Float valve. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] Please see Figures 1 to 5This invention provides a technical solution: a continuous beam support preloading construction device, comprising a construction device body, the construction device body including a loading top plate 3, a loading component 4, a water injection component 5, and a measuring mechanism 6. The loading component 4 is placed on the surface of the loading top plate 3, and a pier 1 is provided at the bottom end of the loading top plate 3. A support body 2 is installed on the side of the pier 1, and the top of the support body 2 is fixedly connected to the bottom end of the loading top plate 3. A water injection component 5 is provided on the top of the loading component 4, and each loading component 4 is composed of multiple independent water tanks 9. The water injection component 5 passes through the top of each independent water tank 9, and the front end of the water injection component 5 is connected to an external water injection device. A measuring mechanism 6 is provided on the side of the loading component 4. A settlement rod 17 is installed at the bottom of the measuring mechanism 6. The settlement rod 17 passes downward from the surface of the loading top plate 3. The bottom of the measuring mechanism 6 is buried in the ground. The continuous beam support preloading construction device is installed on the top through the support body 2. The loading top plate 3 supports the first-level measuring mechanism 6 of the loading component 4. At the same time, the water injection component 5 is installed on the top of the loading component 4 to facilitate the subsequent preloading process. By setting each independent water tank 9 in the loading component 4 as a three-stage cavity structure, three stages of preloading measurement process can be carried out. The preloading process of each stage is detected by reading the measuring mechanism 6 at the bottom.

[0026] In this embodiment, the loading component 4 includes an independent water tank 9 and a pressure-stabilizing pipe 13. The independent water tank 9 has, from bottom to top, a primary loading cavity 10, a secondary loading cavity 11, and a tertiary loading cavity 12. The outer sides of each of the primary, secondary, and tertiary loading cavities 10 and 12 are connected to the pressure-stabilizing pipe 13. The end of the pressure-stabilizing pipe 13 is connected to the top of the measuring mechanism 6. A docking column 8 is provided at the top of the independent water tank 9, and the water injection component 5 passes through the docking column 8. A partition is provided between each of the primary, secondary, and tertiary loading cavities 10 and 12, and a connecting port 27 is provided in the middle of the partition. A float valve 28 is installed at the bottom of the connecting port 27. A three-stage measurement process is adopted, and during each stage of measurement, the independent water tank 10... The internal connection port 27 and distributed float valves 28 of the tank 9 can automatically discharge water exceeding the preset loading capacity, ensuring that the pre-pressurization weight inside each independent water tank 9 remains synchronized, improving the accuracy of pre-pressurization. This structure also enables the rapid discharge of water after measurement, reducing the weight of the loading component 4, facilitating early construction and later dismantling, and improving construction efficiency. Specifically, during pre-pressurization, water is injected into the interior of the independent water tank 9 through the diversion pipe 24. The valve 14 outside the primary loading cavity 10 is closed, and the valve 14 outside the secondary loading cavity 11 is opened. After the primary loading cavity 10 is filled, the overflowing water flows directly through the valve 14 outside the secondary loading cavity 11, thereby ensuring that the water volume inside each independent water tank 9 does not exceed that of the primary loading cavity 10.

[0027] In this embodiment, the water injection assembly 5 includes a water injection pipe 7 and a diversion pipe 24. The diversion pipe 24 is installed inside the docking column 8, and both ends of the diversion pipe 24 extend from the sides of the docking column 8. Both ends of the diversion pipe 24 are provided with flanges 25, which connect to the external water injection pipe 7 via the corresponding flanges 25. The top of the diversion pipe 24 is provided with a water inlet 26, which connects to the interior of the three-stage loading cavity 12. By using the water injection assembly 5, water can be simultaneously injected into each loading group. The water injection in component 4 achieves the function of pre-compression loading, thereby ensuring that the pre-compression weight borne by different positions on the surface of the loading top plate 3 increases stably and synchronously. This ensures that the supports in different areas at the bottom will not experience large pressure differences during the early pre-compression construction stage, resulting in different bottom settlements. This makes the results of subsequent measurements more accurate. Since the water inlet 26 faces upward, it can evenly fill the entire water injection pipe 7 and then simultaneously inject water into the interior of the independent water tank 9 from the top water inlet, ensuring that the load inside each independent water tank 9 is uniform and increases synchronously.

[0028] In this embodiment, the measuring mechanism 6 includes a centralized pipe 15, a settling rod 17, and a hollow sleeve 20. The centralized pipe 15 has multiple docking holes 18 on its surface. An anchor plate 16 is installed at the bottom end of the centralized pipe 15. The settling rod 17 is fixedly installed at the bottom end of the anchor plate 16. The hollow sleeve 20 is located at the bottom end of the settling rod 17. A valve 14 is installed on the surface of the pressure stabilizing pipe 13, and each pressure stabilizing pipe 13 is horizontally connected to the corresponding docking hole 18. The bottom end of the hollow sleeve 20 is inserted into the ground. A horizontal pressure plate 21 is installed on the outer top of the hollow sleeve 20. A measuring rod 22 is installed inside the hollow sleeve 20. A measuring channel 23 is opened at the bottom end of the settling rod 17, and the measuring rod 22 passes through the measuring channel 23. However, a drainage pipe 19 is provided at the top of the measuring channel 23. The area of ​​the settlement rod 17 between the drainage pipe 19 and the measuring channel 23 is a solid structure. The bottom of the measuring mechanism 6 is directly inserted into the ground. By reading the movement position of the measuring rod 22 inside the measuring channel 23, the settlement data generated by the measuring mechanism 6 can be read. This further reduces the obstruction of the ground to the measuring mechanism 6. The measurement results obtained by this method can better reflect the settlement state of the support part in this area after being preloaded. When reading, the change of the pointing position of the measuring rod 22 in the measuring channel 23 can be directly observed. After the loading component 4 is pressurized, it will press down the nearby loading top plate 3. This pressure will cause the settlement rod 17 to sink, which will be reflected at the measuring rod 22.

[0029] This embodiment also provides a method for preloading construction of a continuous beam support. The method uses the above-mentioned device, and the construction process is as follows: the measuring mechanism 6 and the loading component 4 are fixedly installed on the loading top plate 3. The top of the measuring mechanism 6 is fixedly connected to the surface of the loading top plate 3 through the anchor plate 16, and the bottom of the measuring mechanism 6 is buried in the ground near the support body 2. The initial settlement position displayed by the measuring mechanism 6 under no-load conditions is recorded. Water is injected into the interior of the loading component 4 through the water injection component 5 until the primary loading cavity 10 is filled. Then, record the settlement status displayed at the bottom of the measuring mechanism 6 under this state. If the settlement data displayed by different measuring mechanisms 6 are significantly different, the placement position of the loading component 4 and the water volume in the first-stage loading cavity 10 should be calibrated and tested. Repeat the above steps to perform second-stage and third-stage pre-pressure loading measurements. In this process, the second-stage loading cavity 11 and the third-stage loading cavity 12 are filled with water, and the settlement data is measured again. After all measurements are completed, the valve 14 on the outside of the first-stage loading cavity 10 can be opened to drain all the water from the independent water tank 9, reducing the weight of the independent water tank 9. Finally, the elastic deformation of the whole is measured by the measuring mechanism 6, and the loading component 4 and the measuring mechanism 6 can be removed.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A continuous beam support preloading construction device, comprising a construction device body, characterized in that: The construction device body includes a loading top plate (3), a loading component (4), a water injection component (5), and a measuring mechanism (6). The loading component (4) is placed on the surface of the loading top plate (3). A pier (1) is provided at the bottom end of the loading top plate (3). A support body (2) is installed on the side of the pier (1). The top of the support body (2) is fixedly connected to the bottom end of the loading top plate (3). A water injection component (5) is provided at the top of the loading component (4). Each loading component (4) is composed of multiple independent water tanks (9). The water injection component (5) passes through the top of each independent water tank (9). The front end is connected to the external water injection equipment. The side of the loading component (4) is provided with a measuring mechanism (6). The measuring mechanism (6) includes a central pipe (15), a settlement rod (17) and a hollow sleeve (20). The bottom end of the central pipe (15) is provided with an anchor plate (16). The settlement rod (17) is fixedly installed at the bottom end of the anchor plate (16). The surface of the central pipe (15) is provided with multiple docking holes (18). The hollow sleeve (20) is provided at the bottom end of the settlement rod (17). The settlement rod (17) passes downward from the surface of the loading top plate (3). The bottom end of the measuring mechanism (6) is buried in the ground. The loading component (4) includes an independent water tank (9) and a pressure stabilizing pipe (13). The interior of the independent water tank (9) is provided with a first-stage loading cavity (10), a second-stage loading cavity (11) and a third-stage loading cavity (12) from bottom to top. The outside of the first-stage loading cavity (10), the second-stage loading cavity (11) and the third-stage loading cavity (12) are all connected to the pressure stabilizing pipe (13). The end of the pressure stabilizing pipe (13) is connected to the top of the measuring mechanism (6). The top of the independent water tank (9) is provided with a docking column (8). The water injection component (5) passes through the interior of the docking column (8). The water injection assembly (5) includes a water injection pipe (7) and a diversion pipe (24). The diversion pipe (24) is installed inside the docking post (8), and both ends of the diversion pipe (24) extend out from the side of the docking post (8).

2. The continuous beam support preloading construction device according to claim 1, characterized in that: Each of the primary loading cavity (10), the secondary loading cavity (11) and the tertiary loading cavity (12) is provided with a partition, and a connecting port (27) is provided in the middle of the partition. A float valve (28) is installed at the bottom of the connecting port (27).

3. The continuous beam support preloading construction device according to claim 1, characterized in that: Both ends of the diversion pipe (24) are provided with flanges (25). Both ends of the diversion pipe (24) are connected to the external water injection pipe (7) through the corresponding flanges (25). The top of the diversion pipe (24) is provided with a water inlet (26), and the water inlet (26) is connected to the interior of the three-stage loading cavity (12).

4. The continuous beam support preloading construction device according to claim 1, characterized in that: The surface of the pressure stabilizing pipe (13) is equipped with a valve (14), and each pressure stabilizing pipe (13) is connected to the corresponding docking hole (18) in a horizontal state.

5. A continuous beam support preloading construction device according to claim 4, characterized in that: The bottom end of the hollow sleeve (20) is inserted into the ground. A horizontal pressure plate (21) is provided on the outer side of the top of the hollow sleeve (20). A measuring rod (22) is provided inside the hollow sleeve (20). A measuring channel (23) is opened at the bottom end of the settlement rod (17). The measuring rod (22) passes through the inside of the measuring channel (23). A drainage pipe (19) is provided at the top of the measuring channel (23). The area of ​​the settlement rod (17) between the drainage pipe (19) and the measuring channel (23) is a solid structure.

6. A method for pre-stressing construction of a continuous beam support, characterized in that: The method uses the device as described in claim 1, and its construction process is carried out according to the following steps: Step 1, both the measuring mechanism (6) and the loading component (4) are fixedly installed on the loading top plate (3); Step 2, the initial settlement position displayed by the measuring mechanism (6) under no-load conditions is recorded, and water is injected into the interior of the loading component (4) through the water injection component (5) until the first-stage loading cavity (10) is filled; Step 3, the settlement state displayed at the bottom of the measuring mechanism (6) under this state is recorded; Step 4, the above steps are repeated to perform second-stage and third-stage pre-compression loading measurements; Step 5, all water is drained, elastic deformation is measured, and the loading component (4) and the measuring mechanism (6) are removed.

7. The method for preloading a continuous beam support according to claim 6, characterized in that: In step one, the top of the measuring mechanism (6) is fixedly connected to the surface of the loading top plate (3) through the anchor plate (16), and the bottom of the measuring mechanism (6) is buried in the ground near the support body (2). In step three, if the settlement data displayed by different measuring mechanisms (6) are significantly different, the placement position of the loading component (4) and the water volume in the first-level loading cavity (10) inside should be calibrated and tested.

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