Bridge horizontal rotation construction weighing auxiliary structure and weighing adjustment method

Abstract

This invention belongs to the field of bridge rotation weighing construction technology, and discloses an auxiliary structure for weighing during bridge horizontal rotation construction. It includes at least 2n sets of weighing brackets symmetrically arranged on the upper bearing platform, where n is a natural number from 2 to 6. Each set of weighing brackets includes a weighing triangle, an upper anchoring assembly, and a weighing jack. The weighing triangle is detachably installed on the upper bearing platform via the upper anchoring assembly, and a weighing jack is installed between the weighing triangle and the lower bearing platform. The weighing triangle consists of a crossbeam, diagonal brace, and column. The upper anchoring assembly consists of an anchoring rod, nut, and washer. This auxiliary weighing structure can solve the problem of large height differences between the upper and lower bearing platforms during weighing, and allows the weighing jack to be positioned on the outside of the upper bearing platform, thus improving the convenience, safety, and reliability of construction. This invention also provides a method for adjusting weighing during bridge horizontal rotation construction, which simplifies the weighing operation process, improves construction efficiency, reduces construction risks, and ensures the smooth progress of the project.

Description

Technical Field

[0001] This invention belongs to the field of temporary anchorage technology in bridge construction, and provides a weighing auxiliary structure and weighing adjustment method for bridge horizontal rotation construction. Background Technology

[0002] Since its initial development in France in the 1940s, bridge rotation construction technology has undergone significant evolution and progress. In particular, the first application of the horizontal rotation method in 1976 laid the foundation for its subsequent practical application on various bridge types. With the continuous development of bridge construction technology in my country, the application of rotating bridges has become increasingly widespread, especially in high-speed railway construction. Despite the significant progress made in bridge rotation technology, some challenges and areas for improvement still exist in practical operation.

[0003] For example, before a bridge can be rotated, the upper abutment needs to be weighed. Traditional weighing methods involve directly supporting jacks between the upper and lower abutments. However, the significant height difference between the two abutments makes jack support and stability difficult. Furthermore, the numerous connecting steel bars within the tight space between the abutments severely interfere with the weighing operation, necessitating the removal of some steel bars, which will leave defects in the bridge's rotation structure. In addition, the ease of removal of temporary anchoring measures must be considered before and after the bridge rotation weighing operation to ensure the bridge's safety during the weighing process.

[0004] Therefore, the above problems prompt us to find a new solution to simplify the weighing operation process, improve construction efficiency, reduce construction risks, and ensure the smooth progress of the project. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a reliable and easy-to-construct bridge horizontal rotation construction weighing auxiliary structure and weighing adjustment method to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a weighing auxiliary structure for bridge horizontal rotation construction, characterized by comprising at least 2n sets of weighing brackets symmetrically arranged on the upper bearing platform, where n is a natural number from 2 to 6. Each set of weighing brackets includes a weighing tripod, an upper anchoring assembly, and a weighing jack. The weighing tripod is detachably installed on the upper bearing platform via the upper anchoring assembly, and a weighing jack is installed between the weighing tripod and the lower bearing platform. The weighing tripod consists of a crossbeam, diagonal braces, and a column. The crossbeam is located at the bottom of the upper bearing platform, and one end of the crossbeam is connected to the lower bearing platform. The upper anchoring assembly is connected, with one end supported on a weighing jack. A diagonal brace is positioned above the crossbeam, with one end abutting against the side wall of the upper bearing platform and the other end fixed to the crossbeam and positioned away from the upper bearing platform. A column is positioned close to the upper bearing platform and supported between the crossbeam and the diagonal brace. The upper anchoring assembly consists of an anchoring rod, a nut, and a washer. The anchoring rod passes through the upper bearing platform and crossbeam sequentially from top to bottom and is fixedly connected by nuts at both ends. The washer is positioned on the top surface of the upper bearing platform and supports the nuts above the anchoring rod. This design, with its symmetrically arranged weighing brackets, stable triangular frame, and efficient anchoring assembly, significantly improves the safety and efficiency of the weighing construction process, solves the height difference and interference problems inherent in traditional weighing construction, and provides a reliable solution for bridge rotation construction. The ease of construction also makes this structure more practical in actual operation, contributing to improved overall project quality and progress.

[0008] Optionally, several spaced-apart reinforcing ribs are installed on the crossarm, below its connection with the diagonal brace. The weighing jack is supported on the crossarm and located below the reinforcing ribs. This significantly improves the crossarm's bending resistance, effectively reducing deformation under applied weight and ensuring the accuracy of the weighing process. Furthermore, placing the weighing jack below the reinforcing ribs allows for a more even distribution of load on the crossarm, reducing the risk of localized stress concentration. The addition of the reinforcing ribs also makes the entire structure more stable, effectively resisting dynamic loads or other unforeseen events that may occur during construction, thereby improving construction safety.

[0009] Optionally, the diagonal brace is fitted with an end plate at its upper end, which abuts against the side wall of the upper bearing platform. This addition of the end plate strengthens the connection between the diagonal brace and the upper bearing platform, better resisting various forces generated during construction and ensuring construction safety. Furthermore, during the rotation construction process, the structure may be affected by lateral forces; the end plate design effectively improves the overall lateral force resistance and reduces the risk of structural instability.

[0010] Optionally, the crossarm is equipped with an anti-lateral sway beam that is tightly attached to the side wall of the upper bearing platform. This anti-lateral sway beam effectively reduces the risk of tilting or instability during construction, ensuring the safety of construction personnel. Furthermore, the design of the anti-lateral sway beam increases the structural rigidity, resulting in better stability under load and contributing to improved project quality. The tight-fitting design of the anti-lateral sway beam also simplifies the connection between components, facilitating rapid installation and adjustment by construction personnel and improving construction efficiency.

[0011] Optionally, the crossbeams, diagonal braces, and columns constitute a single weighing bracket, and the weighing triangle is composed of two weighing brackets arranged side by side at intervals. Multiple spaced connectors are installed between the two crossbeams along their length, and a base plate is provided at the bottom of the two crossbeams for anchor rods to pass through. By integrating the crossbeams, diagonal braces, and columns into a single weighing bracket, the overall stability and load-bearing capacity of the structure can be effectively improved. The two side-by-side weighing brackets increase the overall load-bearing area of ​​the weighing triangle, allowing for a more even distribution of the load and reducing localized stress concentration. The multiple connectors ensure the overall stability and reliability of the weighing triangle structure, and the base plate design facilitates easier assembly and disassembly of the entire structure.

[0012] Optionally, a base plate is fully laid at the bottom of the two crossarms; the upper ends of the two diagonal braces share a single end plate; and the two crossarms share a single anti-lateral sway beam. This fully laid base plate design enhances the connection strength between the crossarms, reduces deformation caused by load, and improves the overall stability of the structure. The shared design of the diagonal braces and anti-lateral sway beam reduces construction complexity, making the construction process more efficient and helping to improve the overall lateral force resistance, ensuring effective resistance to lateral forces during construction. Finally, by simplifying the connection and support methods, the installation, adjustment, and maintenance of the overall structure become more convenient, improving construction efficiency.

[0013] Optionally, the upper anchoring assembly also includes a pad block disposed between the pad plate and the upper bearing platform. This pad block design effectively distributes the load applied to the pad plate, reduces local stress concentration, and improves the overall stability of the structure.

[0014] Optionally, the weighing auxiliary structure also includes lower anchoring components installed on the lower bearing platform and corresponding one-to-one with the upper anchoring components. Each lower anchoring component consists of a pre-embedded bolt and a double-threaded sleeve. The lower end of the pre-embedded bolt is anchored within the lower bearing platform, while its upper end extends beyond the lower bearing platform and is detachably connected to the anchoring rod in the upper anchoring component via the double-threaded sleeve. This quickly removable temporary anchoring structure ensures the stability of the bridge during weighing and rotation, and allows for rapid removal after construction, reducing subsequent workload. In this way, the lower anchoring components, through their connection with the upper anchoring components, ensure the stability of the bridge during weighing and rotation, preventing structural instability due to load changes. Furthermore, the quickly removable temporary anchoring structure allows for rapid disassembly of the upper anchoring components connected to the lower anchoring components after construction, reducing subsequent workload and time, and improving construction efficiency. Meanwhile, because the design of the lower anchoring components corresponds one-to-one with the upper anchoring components, the installation and adjustment process of the entire structure is simpler and clearer, reducing construction complexity. This design allows for dynamic adjustments as needed during rotation construction, enhancing the flexibility of the structure and adapting to different construction conditions and requirements.

[0015] Optionally, the weighing auxiliary structure also includes a rolling beam for supporting a single set of weighing tripods, allowing the crossarm to slide in and out of the upper bearing platform. Alternatively, the weighing auxiliary structure may also include a rolling beam for supporting multiple sets of weighing tripods installed on any one side of the upper bearing platform, allowing the crossarm to slide in and out of the upper bearing platform. This rolling beam design allows the crossarm to be easily repositioned during construction, improving construction flexibility and adaptability, especially in complex construction environments. In other words, the rolling beam makes it easier for construction workers to install and dismantle the weighing tripods, reducing construction time and labor costs, and improving construction efficiency.

[0016] This invention also provides a method for adjusting the weighing during bridge horizontal rotation construction, which employs the aforementioned auxiliary weighing structure for bridge horizontal rotation construction. The method includes the following steps:

[0017] S1. Remove the double-ended threaded sleeve connecting the anchor rod of any set of upper anchoring components and the pre-embedded screw of the lower anchoring component to release the temporary anchoring structure between the upper and lower bearing platforms, and retain the upper anchoring component.

[0018] S2. Add a rolling beam to the lower bearing platform near the removed temporary anchorage structure;

[0019] S3. Using a rolling beam, the crossbeam of the weighing triangular frame of the single weighing bracket is slid between the upper and lower bearing platforms and is passed through by the anchor rod of the upper anchor assembly. The diagonal brace and anti-side swing beam of the weighing triangular frame abut against the side wall of the upper bearing platform. Then, a nut that is fastened to the anchor rod is screwed on below the crossbeam.

[0020] S4. Remove the rolling beam and install a weighing jack on the lower bearing platform outside the upper bearing platform and below the crossbeam.

[0021] S5. Repeat steps S1-S4 until all the weighing brackets are installed in place.

[0022] S6. Gradual loading and weighing are carried out by weighing jacks on both sides of the weighing brackets that are symmetrically arranged relative to the upper support platform, and the weighing stops after reaching the critical state in order to read relevant data.

[0023] S7. After weighing is completed, depressurize all weighing jacks, then gradually remove the entire weighing bracket set, and use a double-ended threaded sleeve to connect the anchor rod of the upper anchoring assembly with the pre-embedded screw of the lower anchoring assembly to restore the temporary anchoring structure between the upper and lower foundations.

[0024] The beneficial effects of this invention are:

[0025] 1. The bridge horizontal rotation construction weighing auxiliary structure of the present invention, through the design of a combination structure of quick-release upper anchoring component and lower anchoring component, can not only effectively solve the imbalance problem caused by pier settlement or other factors, and improve the safety and reliability of construction, but also allows construction personnel to make adjustments according to the site conditions, adapt to the constantly changing construction conditions and needs, and also allows the temporary anchoring mechanism to be quickly and conveniently removed before the bridge is rotated, reducing construction time and costs.

[0026] 2. The bridge horizontal rotation construction weighing auxiliary structure of the present invention solves the problem of large height difference between the upper and lower piers during weighing by introducing a weighing bracket. It also allows the weighing jack to be set on the outside of the upper pier, which helps to increase the weighing torque by more than 1m after adding the weighing bracket. Moreover, there is no interference from the steel bars, and there is no need to remove the connecting steel bars between the upper and lower piers, thus eliminating potential quality hazards.

[0027] 3. The bridge horizontal rotation construction weighing auxiliary structure of the present invention greatly improves the structural utilization efficiency by combining the shared upper anchoring component with the lower anchoring component and the weighing bracket. After the fixed anchoring prestress during construction is removed, it can be converted into a weighing anchoring system, which improves work efficiency and reduces investment. Moreover, the upper anchoring component and the weighing bracket can be reused, which greatly saves construction costs.

[0028] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a front view of the bridge horizontal rotation construction weighing auxiliary structure of the present invention;

[0031] Figure 2 for Figure 1 A top-down view;

[0032] Figure 3 for Figure 1 Enlarged diagram of part A in the diagram;

[0033] Figure 4 for Figure 3 A three-dimensional schematic diagram of a weighing tripod;

[0034] Figure 5 for Figure 3 A three-dimensional schematic diagram of another structure of the weighing tripod in the diagram;

[0035] Figure 6 for Figure 5 A top-down view;

[0036] Figure 7 for Figure 2 Enlarged schematic diagram of part B in the diagram;

[0037] Figure 8 for Figure 1 A schematic diagram of the anchorage of the upper and lower bearing platforms before and after the installation of the weighing tripod.

[0038] Figure 9 This is a schematic diagram of the removal of the upper and lower abutment anchorages before the weighing adjustment during the bridge horizontal rotation construction of this invention;

[0039] Figure 10 This is a schematic diagram illustrating the use of a rolling beam to assist in the installation of a weighing tripod during the weighing adjustment process in bridge horizontal rotation construction according to the present invention.

[0040] Figure 11 This is a schematic diagram of the installation of the weighing jack during the weighing adjustment in bridge horizontal rotation construction according to the present invention;

[0041] Figure 12 This is a schematic diagram of the re-anchoring of the upper and lower abutments after the weighing adjustment during the bridge horizontal rotation construction of the present invention.

[0042] Attached reference numerals: 1-Weighing tripod, 11-Crossbeam, 12-Diagonal brace, 13-Column, 14-Anti-side sway beam, 15-Rib plate, 16-Connector, 17-Base plate, 18-End plate; 2-Upper anchor assembly, 21-Anchor rod, 22-Nut, 23-Washer plate, 24-Wash block; 3-Weighing jack; 4-Lower anchor assembly, 41-Embedded bolt, 42-Double-ended threaded sleeve; 5-Rolling beam; 6-Upper bearing platform; 7-Lower bearing platform. Detailed Implementation

[0043] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0044] like Figure 1-7 As shown, the bridge horizontal rotation construction weighing auxiliary structure mentioned in this invention includes at least 2n sets of weighing brackets arranged symmetrically on the upper abutment 6, where n is a natural number from 2 to 6. This design can evenly distribute the weighing load and improve the stability of the structure. The stiffness of the weighing brackets meets the structural requirements, and the deformation after being stressed is controlled within 2mm to avoid excessive deformation interfering with the weighing results. Each set of weighing brackets includes a weighing triangle 1, an upper anchoring assembly 2, and a weighing jack 3. The weighing triangle 1 is detachably installed on the upper abutment 6 via the upper anchoring assembly 2, and the weighing jack 3 is set between the weighing triangle 1 and the lower abutment 7. The weighing triangle 1 consists of a crossbeam 11, a diagonal brace 12, and a column 13. The crossbeam 11 is set at the bottom of the upper abutment 6, and one end of the crossbeam 11 is connected to the upper anchoring assembly 2, while the other end is connected to the upper anchoring assembly 2. The end support is on the weighing jack 3, providing lateral support force; the diagonal brace 12 is set above the crossbeam 11, with one end of the diagonal brace 12 abutting against the side wall of the upper support platform 6, and the other end fixed to the crossbeam 11 and arranged away from the upper support platform 6, enhancing the overall stability of the weighing tripod; the column 13 is set close to the upper support platform 6 and supported between the crossbeam 11 and the diagonal brace 12, providing vertical support force and ensuring the structural integrity; the upper anchor assembly 2 consists of an anchor rod 21, a nut 22, and a pad 23. The anchor rod 21 passes through the upper support platform 6 and the crossbeam 11 from top to bottom and is fixedly connected by the nuts 22 at both ends to ensure the tightness and stability of the connection structure. The pad 23 is set on the top surface of the upper support platform 6 and is used to support the nut 22 above the anchor rod 21, to distribute the force and prevent local compression.

[0045] In this embodiment, a number of spaced-apart reinforcing plates 15 are provided on the crossbeam 11 and below its connection with the diagonal brace 12. The weighing jack 3 is supported on the crossbeam 11 and located below the reinforcing plates 15. The function of these reinforcing plates 15 is to enhance the bending stiffness and load-bearing capacity of the crossbeam 11, ensuring the stability of the structure during the weighing process; at the same time, it can also make the force on the weighing jack more uniform, reduce the impact of concentrated load on the crossbeam, and the presence of the reinforcing plates can effectively disperse the load applied by the jack, further improving the overall stability and safety of the structure.

[0046] In this embodiment, the diagonal brace 12 has an end plate 18 at its upper end abutting against the side wall of the upper bearing platform 6. This end plate 18 is designed to increase the contact area between the diagonal brace 12 and the upper bearing platform 6, effectively dispersing the contact pressure between the diagonal brace 12 and the side wall of the upper bearing platform 6 under load, reducing local stress concentration, and thus improving the stability and load-bearing capacity of the diagonal brace 12. The presence of the end plate 18 also prevents the diagonal brace 12 from sliding or falling off under load, ensuring the reliability of the diagonal brace 12 during construction. The crossbeam 11 is provided with an anti-lateral sway beam 14 for close contact with the side wall of the upper bearing platform 6. The purpose of this anti-lateral sway beam 14 is to further enhance the stability of the entire structure during rotation construction, preventing structural swaying or tilting caused by lateral forces. That is, the anti-lateral sway beam 14, through close contact with the side wall of the upper bearing platform 6, can effectively limit the lateral displacement of the crossbeam 11, thereby enhancing the overall structural stability. Furthermore, the anti-lateral sway beam 14 helps to distribute the load applied to the crossarm 11, reducing local stress concentration and ensuring the structural safety during construction. During bridge rotation construction, the structure may be subjected to lateral wind forces or other lateral forces; the design of the anti-lateral sway beam 14 effectively improves the structure's resistance to these forces. The crossarm 11 and anti-lateral sway beam 14 are made of channel steel, which has good bending strength, stiffness, and stability, effectively bearing lateral and longitudinal loads, and is also easy to install and connect during construction. The diagonal brace 12 and column 13 are made of I-beams. Due to their excellent load-bearing capacity and resistance to lateral bending, I-beams are very suitable for use as columns and diagonal braces, effectively supporting the bridge's weight and resisting various stresses during construction.

[0047] In another embodiment, the crossbeam 11, diagonal brace 12, and column 13 constitute a single weighing support, and the weighing triangle 1 is composed of two side-by-side, spaced-apart weighing supports. This further enhances the load-bearing capacity and stability of the weighing triangle, providing a larger load-bearing surface and improving overall stability and uniformity. Multiple spaced connectors 16 are provided between the two crossbeams 11 and along the length of the crossbeams 11. These connectors 16 effectively connect the two parallel crossbeams 11, enhancing overall rigidity and stability. Steel plates, I-beams, or channel steel can be used as connectors. A base plate 17 is provided at the bottom of the two crossbeams 11 for the anchor rod 21 to pass through. The design of the base plate 17 ensures the stable connection of the anchor rod 21 and provides effective support for the entire weighing support. Meanwhile, the base plate 17 is fully laid on the bottom of the two crossbeams 11. This design provides a larger contact area, enhances the connection strength between the base plate 17 and the crossbeams 11, and effectively disperses the load applied by the anchor rods 21, thereby improving the stability of the overall structure. The upper ends of the two diagonal braces 12 share a single end plate 18. This design simplifies the connection method of the structure, helps to improve the stability and load-bearing capacity of the diagonal braces, and ensures a more secure abutment between the upper bearing platform and the diagonal braces. The two crossbeams 11 share a single anti-lateral sway beam 14. This design helps to enhance the connection between the two crossbeams 11, improves the lateral force resistance of the overall structure, and ensures the stability of the structure during the rotation construction process.

[0048] In this embodiment, the upper anchor assembly 2 also includes a pad 24 disposed between the pad plate 23 and the upper support platform 6, which serves as a support and adjustment mechanism. The pad 24 is made of channel steel to ensure that it has good strength and rigidity, can withstand the load applied by the upper support platform, and maintain a stable support effect.

[0049] like Figure 8 As shown, in this embodiment, the weighing auxiliary structure also includes a lower anchoring component 4 installed on the lower bearing platform 7 and corresponding one-to-one with the upper anchoring component 2. This design ensures effective cooperation between the upper anchoring component and the lower anchoring component, providing necessary support for the bridge rotation construction. Each lower anchoring component 4 consists of a pre-embedded screw 41 and a double-ended threaded sleeve 42. The pre-embedded screw 41 provides anchoring force and connection points; its lower end is anchored within the lower bearing platform 7, and its upper end extends beyond the lower bearing platform 7 and is detachably connected to the anchoring rod 21 in the upper anchoring component 2 via the double-ended threaded sleeve 42. This design makes the connection and disassembly process more convenient and helps ensure the safety and reliability of the structure during the bridge rotation weighing construction, providing solid technical support for the smooth progress of the project.

[0050] In this embodiment, the weighing auxiliary structure further includes a rolling beam 5 for supporting the crossarm 11 of a single set of weighing tripods 1 to slide in and out of the upper support platform 6, or the weighing auxiliary structure further includes a rolling beam 5 for supporting the crossarm 11 of multiple sets of weighing tripods 1 installed on any one side of the upper support platform 6 to slide in and out of the upper support platform 6. The design of this rolling beam allows the crossarm 11 of the weighing tripod 1 to move flexibly during construction, achieving better adjustment and positioning.

[0051] like Figure 9-12 As shown below, the weighing adjustment method for bridge horizontal rotation construction is described in detail. Using the aforementioned bridge horizontal rotation construction weighing auxiliary structure, the weighing adjustment method includes the following steps:

[0052] S1: Remove the upper anchoring assembly connection; by removing the double-ended threaded sleeve 42 connecting the anchoring rod 21 of any set of upper anchoring assemblies 2 and the pre-embedded screw 41 of the lower anchoring assembly 4, the temporary anchoring structure between the upper bearing platform 6 and the lower bearing platform 7 is released, while the upper anchoring assembly 2 is retained.

[0053] S2: Add rolling beam; Add rolling beam 5 to the lower bearing platform 7 near the removed temporary anchoring structure to provide support for the subsequent installation of the weighing bracket.

[0054] S3: Install the weighing bracket; use the rolling beam 5 to slide the crossbeam 11 of the weighing triangular frame 1 of the single set of weighing brackets into the space between the upper bearing platform 6 and the lower bearing platform 7 and pass through the anchor rod 21 of the upper anchor assembly 2. The diagonal brace 12 and the anti-side swing beam 14 of the weighing triangular frame 1 abut against the side wall of the upper bearing platform 6. Then screw the nut that is fastened to the anchor rod 21 under the crossbeam 11. Initially, apply a preload of 20kN to the threaded steel to eliminate inelastic deformation between structures.

[0055] S4: Set up a weighing jack; remove the rolling beam 5, and set up a weighing jack 3 on the lower bearing platform 7 outside the upper bearing platform 6 and below the crossbeam 11.

[0056] S5: Repeat the installation process; repeat steps S1-S4 until the entire set of weighing brackets is installed in place.

[0057] S6: Implement graded loading and weighing; implement graded loading and weighing through weighing jacks 3 on both sides of the weighing brackets arranged symmetrically relative to the upper support 6, and stop after reaching the critical state to read relevant data. During weighing, the micrometer is installed between the upper and lower supports, and the displacement of the support is used as the control reference to ensure the accuracy of the measurement data.

[0058] S7: Jack depressurization; after weighing is completed, depressurize all weighing jacks 3;

[0059] S8 Remove the weighing bracket; add a rolling beam 5 to the lower support 7 near the single weighing bracket to be removed, remove the weighing jack 3 of the weighing bracket, and disconnect the connection between the weighing tripod 1 and the upper anchor assembly 2; then use the rolling beam 5 to slide the crossbeam 11 of the weighing tripod 1 of the single weighing bracket out between the upper support 6 and the lower support 7, so as to remove the weighing tripod 1 and retain the upper anchor assembly 2.

[0060] S9: Assemble the temporary anchoring structure; use the double-ended threaded sleeve 42 to connect the anchoring rod 21 of the upper anchoring assembly 2 to the pre-embedded screw 41 of the lower anchoring assembly 4, so as to assemble the temporary anchoring structure between the upper bearing platform 6 and the lower bearing platform 7.

[0061] S10: Remove all weighing brackets; repeat steps S8-S9 to gradually remove all weighing brackets to restore all temporary anchoring structures between the upper bearing platform 6 and the lower bearing platform 7.

[0062] This weighing adjustment method, through a series of steps, details the installation and removal of weighing brackets during bridge rotation construction, ensuring the safety and reliability of the construction while improving work efficiency. Each step is closely linked, forming a complete operational process that ensures construction personnel can effectively and conveniently complete weighing operations.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A bridge horizontal rotation construction weighing auxiliary structure, characterized in that, The system includes at least 2n sets of weighing brackets arranged symmetrically on the upper support platform (6), where n is a natural number from 2 to 6. Each set of weighing brackets includes a weighing tripod (1), an upper anchoring assembly (2), and a weighing jack (3). The weighing tripod (1) is detachably installed on the upper support platform (6) via the upper anchoring assembly (2), and the weighing jack (3) is positioned between the weighing tripod (1) and the lower support platform (7). The weighing tripod (1) consists of a crossbeam (11), a diagonal brace (12), and a column (13). The crossbeam (11) is located at the bottom of the upper support platform (6), with one end connected to the upper anchoring assembly (2) and the other end supported on the weighing jack (3). The diagonal brace (12) is positioned on the lower support platform (7). The upper anchor assembly (2) is set above the crossbeam (11), and one end of the diagonal brace (12) abuts against the side wall of the upper support platform (6), while the other end is fixed on the crossbeam (11) and arranged away from the upper support platform (6); the column (13) is set close to the upper support platform (6) and supported between the crossbeam (11) and the diagonal brace (12); the upper anchor assembly (2) consists of an anchor rod (21), a nut (22), and a pad (23). The anchor rod (21) passes through the upper support platform (6) and the crossbeam (11) from top to bottom and is fixedly connected by the nuts (22) at both ends. The pad (23) is set on the top surface of the upper support platform (6) and is used to support the nut (22) above the anchor rod (21). The weighing auxiliary structure also includes a lower anchoring component (4) set on the lower support (7) and corresponding one-to-one with the upper anchoring assembly (2). Each lower anchoring component (4) consists of a pre-embedded screw (41) and a double-ended threaded sleeve (42). The lower end of the pre-embedded screw (41) is anchored in the lower support (7), and its upper end extends above the lower support (7) and is detachably connected to the anchoring rod (21) provided in the upper anchoring assembly (2) through the double-ended threaded sleeve (42).

2. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1, characterized in that, A number of spaced-apart reinforcing plates (15) are provided on the crossarm (11) and below the connection between it and the diagonal brace (12). The weighing jack (3) is supported on the crossarm (11) and located below the reinforcing plates (15).

3. The bridge horizontal rotation construction weighing auxiliary structure according to claim 2, characterized in that, The diagonal brace (12) has an end plate (18) at its upper end that abuts against the side wall of the upper support (6).

4. The bridge horizontal rotation construction weighing auxiliary structure according to claim 3, characterized in that, The crossbeam (11) is provided with an anti-side swing beam (14) for closely adhering to the side wall of the upper support (6).

5. The bridge horizontal rotation construction weighing auxiliary structure according to claim 4, characterized in that, The crossbeam (11), diagonal brace (12) and column (13) constitute a single weighing bracket, and the weighing tripod (1) is composed of two weighing brackets arranged side by side at intervals. Multiple spaced connectors (16) are provided between the two crossbeams (11) and along the length of the crossbeams (11). A base plate (17) for the anchor rod (21) to pass through is provided at the bottom of the two crossbeams (11).

6. The bridge horizontal rotation construction weighing auxiliary structure according to claim 5, characterized in that, The base plate (17) is fully laid on the bottom of the two crossbeams (11); the upper ends of the two diagonal braces (12) share a common end plate (18); the two crossbeams (11) share a common anti-side swing beam (14).

7. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1, characterized in that, The upper anchor assembly (2) also includes a pad (24) disposed between the pad plate (23) and the upper support (6).

8. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1, characterized in that, The weighing auxiliary structure also includes a rolling beam (5) for supporting a single set of weighing tripods (1) to slide in and out of the upper support platform (6), or the weighing auxiliary structure also includes a rolling beam (5) for supporting multiple sets of weighing tripods (1) provided on any one side of the upper support platform (6) to slide in and out of the upper support platform (6).

9. A method for adjusting the weighing load during bridge horizontal rotation construction, characterized in that, The bridge horizontal rotation construction weighing auxiliary structure as described in any one of claims 1-8 is used, and the weighing adjustment method includes the following steps: S1. Remove the double-ended threaded sleeve (42) connecting the anchor rod (21) of any set of upper anchoring components (2) and the pre-embedded screw (41) of the lower anchoring component (4) to release the temporary anchoring structure between the upper bearing platform (6) and the lower bearing platform (7), and retain the upper anchoring component (2). S2. A rolling beam (5) is added to the lower bearing platform (7) near the removed temporary anchorage structure. S3. Using the rolling beam (5), the crossbeam (11) of the weighing triangular frame (1) of the single weighing bracket is slid into the space between the upper bearing platform (6) and the lower bearing platform (7) and is passed through by the anchor rod (21) of the upper anchor assembly (2). The diagonal brace (12) and the anti-side swing beam (14) of the weighing triangular frame (1) abut against the side wall of the upper bearing platform (6). Then, the nut that is fastened to the anchor rod (21) is screwed on below the crossbeam (11). S4. Remove the rolling beam (5) and install a weighing jack (3) on the lower bearing platform (7) outside the upper bearing platform (6) and below the crossbeam (11). S5. Repeat steps S1-S4 until all the weighing brackets are installed in place. S6. Gradual loading and weighing are carried out by weighing jacks (3) on both sides of the weighing brackets arranged symmetrically relative to the upper support (6), and the weighing stops after reaching the critical state in order to read relevant data. S7. After weighing is completed, depressurize all weighing jacks (3), then gradually dismantle the entire weighing bracket, and use double-ended threaded sleeves (42) to connect the anchor rods (21) of the upper anchoring assembly (2) with the pre-embedded screws (41) of the lower anchoring assembly (4) to restore the temporary anchoring structure between the upper bearing platform (6) and the lower bearing platform (7).

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