Bridge horizontal rotation construction weighing auxiliary structure and weighing adjustment method

Abstract

The invention belongs to the technical field of bridge rotation weighing construction, and discloses a bridge horizontal rotation construction weighing auxiliary structure, which comprises at least 2n groups of weighing brackets symmetrically arranged on an upper bearing platform, n is a natural number of 2-6, and each group of weighing bracket comprises a weighing tripod, an upper anchoring assembly and a weighing jack, the weighing tripod is detachably installed on the upper bearing platform through an upper anchoring assembly, a weighing jack is arranged between the weighing tripod and the lower bearing platform, the weighing tripod is composed of a cross arm, an inclined strut and a stand column, and the upper anchoring assembly is composed of an anchoring connecting rod, a nut and a base plate. According to the weighing auxiliary structure, the problem that the height difference between the upper bearing platform and the lower bearing platform is large during weighing can be solved, the weighing jack is arranged on the outer side of the upper bearing platform, and the convenience, safety and reliability of construction can be improved. The invention further provides a weighing adjustment method for bridge horizontal rotation construction, the weighing operation construction process can be simplified, the construction efficiency is improved, the construction risk is reduced, and smooth proceeding of engineering is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of temporary anchoring for bridge construction, and provides a weighing auxiliary structure for bridge horizontal rotation construction and a weighing adjustment method. Background Art

[0002] Since the bridge rotation method was first developed in France in the 1940s, it has undergone significant evolution and progress. In particular, the first application of the horizontal rotation method in 1976 laid the foundation for subsequent practical applications on various bridge types. With the continuous development of bridge construction technology in my country, the application of rotation bridges has become more and more extensive, especially in high-speed railway construction. Although bridge rotation technology has made significant progress, it still faces some challenges and room for improvement in actual operation.

[0003] For example, before the bridge is rotated, the upper pedestal needs to be weighed. The traditional weighing construction is to directly support the jack between the upper and lower pedestals. There is a large height difference between the upper and lower pedestals during weighing, which makes it difficult to support and stabilize the jack. In addition, there are many connecting steel bars in the compact space between the upper and lower pedestals, which seriously interferes with the weighing operation. Therefore, some of the steel bars between the upper and lower pedestals have to be removed, which will leave certain defects in the horizontal rotation structure of the bridge. In addition, before and after the bridge rotation weighing operation, the convenience of dismantling the temporary anchoring measures must also be considered to ensure the safety of the bridge and complete the corresponding weighing operation.

[0004] Therefore, the above problems prompted us to find a new solution to simplify the weighing operation construction 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 object of the present invention is to provide a bridge horizontal rotation construction weighing auxiliary structure and weighing adjustment method with reliable performance and convenient construction, so as to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a weighing auxiliary structure for bridge horizontal rotation construction, characterized in that it comprises at least 2n groups of weighing brackets arranged symmetrically on the upper bearing platform, wherein n is a natural number of 2 to 6, a single group of weighing brackets comprises a weighing tripod, an upper anchoring assembly and a weighing jack, the weighing tripod is detachably mounted on the upper bearing platform through the upper anchoring assembly, and a weighing jack is arranged between the weighing tripod and the lower bearing platform; the weighing tripod is composed of a cross arm, a diagonal brace and a column, the cross arm is arranged at the bottom of the upper bearing platform, and one end of the cross arm is connected to the bottom of the upper bearing platform. The upper anchor pull assembly is connected, and the other end is supported on the weighing jack; the diagonal brace is set above the cross arm, and one end of the diagonal brace is against the side wall of the upper platform, and the other end is fixed on the cross arm and arranged away from the upper platform; the column is set close to the upper platform and supported between the cross arm and the diagonal brace; the upper anchor pull assembly is composed of an anchor pull rod, a nut, and a pad. The anchor pull rod passes through the upper platform and the cross arm from top to bottom in sequence and is fixedly connected by the nuts set at both ends. The pad is set on the top surface of the upper platform and is used to support the nut above the anchor pull rod. The above scheme is adopted, through the symmetrical arrangement of weighing brackets, the stable tripod form and the efficient anchor pull assembly, which greatly improves the safety and efficiency of the weighing construction process, solves the height difference and interference problems existing in traditional weighing construction, and provides a reliable solution for the bridge rotation construction. The convenience of construction of this structure also makes it more practical in actual operation, which helps to improve the overall quality and progress of the project.

[0008] Optionally, a plurality of ribbed plates are arranged at intervals on the crossarm and below the connection between the crossarm and the diagonal brace, and the weighing jack is supported on the crossarm and located below the ribbed plates. In this way, the provision of the ribbed plates significantly improves the bending resistance of the crossarm, so that deformation can be effectively reduced when gravity is applied, thereby ensuring the accuracy of the weighing process. By placing the weighing jack below the ribbed plates, the load can be more evenly distributed on the crossarm, reducing the risk of local force concentration. The addition of the ribbed plates makes the entire structure more stable, and can effectively resist dynamic loads or other emergencies that may occur during construction, thereby improving the safety of construction.

[0009] Optionally, an end plate is provided at the upper end of the diagonal brace that abuts against the side wall of the upper pedestal. In this way, by adding the end plate, the connection between the diagonal brace and the upper pedestal is more secure, and various forces generated during the construction process can be better resisted to ensure the safety of the construction. During the rotation construction process, the structure may be affected by lateral forces. The design of the end plate can effectively improve the overall lateral force resistance and reduce the risk of structural instability.

[0010] Optionally, the cross arm is provided with an anti-sway beam for close contact with the side wall of the upper pedestal. In this way, the anti-sway beam can effectively reduce the risk of tilting or instability that may occur during construction, ensuring the safety of construction workers; and the design of the anti-sway beam increases the rigidity of the structure, making it more stable when subjected to force, which helps to improve the quality of the project; and the close contact design of the anti-sway beam makes the connection between components simpler, facilitating rapid installation and adjustment by construction workers, and improving construction efficiency.

[0011] Optionally, the crossarm, diagonal brace and column constitute a single weighing bracket, and the weighing tripod is composed of two weighing brackets arranged side by side at intervals, a plurality of spaced connecting pieces are arranged between the two crossarms and along the length direction of the crossarms, and a bottom plate for the anchor connecting rod to pass through is provided at the bottom of the two crossarms. In this way, by integrating the crossarm, diagonal brace and column into a weighing bracket, the stability and bearing capacity of the entire structure can be effectively improved, and the two weighing brackets arranged side by side increase the overall force-bearing area of ​​the weighing tripod, so that the load can be distributed more evenly and the local stress concentration phenomenon is reduced. The provision of multiple connecting pieces makes the overall structure of the weighing tripod stable and reliable, and the design of the bottom plate makes the installation and disassembly of the entire structure more convenient.

[0012] Optionally, the bottom plate is fully laid at the bottom of the two cross arms; the upper ends of the two diagonal braces share an end plate; and the two cross arms share an anti-sway beam. In this way, the full-slab design enhances the connection strength between the cross arms, reduces deformation caused by loads, and improves the overall stability of the structure. The shared design of the diagonal braces and the anti-sway beam reduces the complexity of construction, making the construction process more efficient, and helps to improve the overall lateral force resistance performance, ensuring that the lateral force can be effectively resisted during the construction process. 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 anchor assembly further comprises a pad disposed between the pad and the upper support platform. In this way, the design of the pad can effectively disperse the load applied to the pad, reduce local stress concentration, and improve the stability of the entire structure.

[0014] Optionally, the weighing auxiliary structure also includes a lower anchor assembly that is arranged on the lower pedestal and corresponds to the upper anchor assembly one by one. The single lower anchor assembly is composed of an embedded screw and a double-threaded sleeve. The lower end of the embedded screw is anchored in the lower pedestal, and the upper end thereof is higher than the lower pedestal and is detachably connected to the anchor connecting rod provided in the upper anchor assembly through the double-threaded sleeve. A temporary anchor structure that can be quickly removed is adopted to ensure the stability of the bridge during weighing and rotation, and it can be quickly removed after the construction is completed, thereby reducing the subsequent workload. In this way, the lower anchor assembly ensures the stability of the bridge during weighing and rotation by connecting with the upper anchor assembly, thereby avoiding structural instability caused by load changes. The use of a temporary anchor structure that can be quickly removed enables the upper anchor assembly connected to the lower anchor assembly to be quickly disassembled after the construction is completed, thereby reducing the subsequent workload and time and improving construction efficiency. At the same time, since the design of the lower anchor assembly corresponds one-to-one with the upper anchor assembly, the installation and adjustment process of the entire structure is simpler and clearer, reducing the complexity of construction. This design allows dynamic adjustment as needed during rotation construction, enhances the flexibility of the structure, and adapts to different construction conditions and requirements.

[0015] Optionally, the weighing auxiliary structure also includes a rolling beam for supporting a cross arm of a single set of weighing tripods to slide in and out from under the upper support platform, or the weighing auxiliary structure also includes a rolling beam for supporting a cross arm of multiple sets of weighing tripods provided on any single side of the upper support platform to slide in and out from under the upper support platform. In this way, the design of the rolling beam enables the cross arm to be easily adjusted during construction, thereby improving the flexibility and adaptability of the construction, especially in a complex construction environment. That is, through the rolling beam, construction workers can more easily install and disassemble the weighing tripod, reducing construction time and labor costs, and improving construction efficiency.

[0016] The present invention also provides a weighing and adjusting method for bridge horizontal rotation construction, which adopts the above-mentioned bridge horizontal rotation construction weighing auxiliary structure, and the weighing and adjusting method comprises the following steps:

[0017] S1. Remove the double-threaded sleeve connecting the anchor connecting rod of any group of upper anchoring assemblies and the embedded screw of the lower anchoring assemblies to release the temporary anchoring structure between the upper and lower pedestals, and retain the upper anchoring assemblies;

[0018] S2. Add a rolling beam to the lower pedestal near the released temporary anchoring structure;

[0019] S3, using a rolling beam to slide the cross arm of the weighing tripod of the single weighing bracket into between the upper platform and the lower platform and pass through the anchor connecting rod of the upper anchor assembly, and the diagonal brace and the anti-side swing beam of the weighing tripod are stopped at the side wall of the upper platform, and then screw the nut fastened to the anchor connecting rod under the cross arm;

[0020] S4, remove the rolling beam, and set a weighing jack on the lower support platform outside the upper support platform and below the cross arm;

[0021] S5, repeat steps S1-S4 until all the weighing brackets are installed in place;

[0022] S6. Perform graded loading and weighing by means of weighing jacks on weighing brackets on both sides arranged symmetrically with respect to the upper platform, and stop after reaching a critical state to read relevant data;

[0023] S7. After weighing is completed, all weighing jacks are depressurized, and then the entire set of weighing brackets are gradually removed, and the anchor connecting rods of the entire set of upper anchoring assemblies are connected to the embedded screws of the lower anchoring assemblies using double-headed threaded sleeves to restore the temporary anchoring structure between the upper and lower pedestals.

[0024] The beneficial effects of the present invention are:

[0025] 1. The bridge horizontal rotation construction weighing auxiliary structure of the present invention, by designing a combined structure of a quick-detachable upper anchor pull assembly and a lower anchor assembly, can not only effectively solve the imbalance problem caused by the settlement of the pedestal or other factors, and improve the safety and reliability of construction, but also enable construction personnel to make adjustments according to on-site conditions and adapt to changing construction conditions and needs, and also enable the temporary anchoring mechanism to be quickly and conveniently dismantled before the bridge rotates, thereby reducing construction time and cost.

[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 pedestals during weighing by introducing a weighing bracket, and allows the weighing jack to be arranged on the outside of the upper pedestal, which helps to increase the weighing torque by more than 1m after adding the weighing bracket, and there is no interference from steel bars, so there is no need to remove the connecting steel bars between the upper and lower pedestals, eliminating potential quality risks.

[0027] 3. The bridge horizontal rotation construction weighing auxiliary structure of the present invention greatly improves the utilization efficiency of the structure by combining the lower anchor assembly and the weighing bracket respectively through the common upper anchor pull assembly. After the consolidated anchor prestressing during the removal construction, it can be converted into a weighing anchor system, which improves work efficiency and reduces investment. The upper anchor pull assembly and the weighing bracket can be reused, which greatly saves construction costs.

[0028] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 It is a front schematic diagram of the weighing auxiliary structure for bridge horizontal rotation construction of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of top view;

[0032] Figure 3 for Figure 1 A magnified schematic diagram of part A in FIG.

[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;

[0035] Figure 6 for Figure 5 Schematic diagram of top view;

[0036] Figure 7 for Figure 2 A magnified schematic diagram of part B in FIG.

[0037] Figure 8 for Figure 1 Schematic diagram of the anchoring of the upper and lower platforms before and after the weighing tripod is installed;

[0038] Fig. 9 It is a schematic diagram of the anchoring of the upper and lower caps before weighing and adjustment during the horizontal rotation construction of the bridge according to the present invention;

[0039] Fig.10 It is a schematic diagram of using a rolling beam to assist in installing a weighing tripod during weighing and adjustment of bridge horizontal rotation construction according to the present invention;

[0040] Fig.11 It is a schematic diagram of the installation of the weighing jack in the weighing adjustment of the bridge horizontal rotation construction of the present invention;

[0041] Fig.12 It is a schematic diagram of re-anchoring the upper pedestal and the lower pedestal after weighing and adjustment during the horizontal rotation construction of the bridge according to the present invention;

[0042] Figure numerals: 1-weighing tripod, 11-cross arm, 12-diagonal brace, 13-column, 14-anti-sway beam, 15-ribbed plate, 16-connecting piece, 17-base plate, 18-end plate; 2-upper anchor assembly, 21-anchor connecting rod, 22-nut, 23-pad, 24-pad; 3-weighing jack; 4-lower anchor assembly, 41-embedded screw, 42-double-headed threaded sleeve; 5-rolling beam; 6-upper supporting platform; 7-lower supporting platform. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0044] like Figure 1-7 As shown, the bridge horizontal rotation construction weighing auxiliary structure mentioned in the present invention includes at least 2n groups of weighing brackets arranged symmetrically on the upper support platform 6, wherein n is a natural number of 2 to 6. The design can evenly distribute the weighing load and improve the stability of the structure. The stiffness of the weighing bracket meets the structural requirements, and the deformation after being subjected to force is controlled within 2 mm to avoid excessive deformation interfering with the weighing result. A single group of weighing brackets includes a weighing tripod 1, an upper anchor assembly 2 and a weighing jack 3. The weighing tripod 1 is detachably installed on the upper support platform 6 through the upper anchor assembly 2, and the weighing jack 3 is arranged between the weighing tripod 1 and the lower support platform 7; the weighing tripod 1 is composed of a cross arm 11, a diagonal brace 12, and a column 13. The cross arm 11 is arranged at the bottom of the upper support platform 6, and one end of the cross arm 11 is connected to the upper anchor assembly 2, and the other end is connected to the upper anchor assembly 2. The ends are supported on the weighing jack 3 to provide lateral support force; the diagonal brace 12 is arranged above the cross arm 11, and one end of the diagonal brace 12 is abutted against the side wall of the upper supporting platform 6, and the other end is fixed on the cross arm 11 and arranged away from the upper supporting platform 6, thereby enhancing the overall stability of the weighing tripod; the column 13 is arranged close to the upper supporting platform 6 and supported between the cross arm 11 and the diagonal brace 12, thereby providing vertical support force and ensuring the firmness of the structure; the upper anchor pull assembly 2 is composed of an anchor pull link 21, a nut 22, and a pad 23. The anchor pull link 21 passes through the upper supporting platform 6 and the cross arm 11 from top to bottom in sequence, and is fixedly connected by the nuts 22 at both ends thereof to ensure the tightness and stability of the connection structure. The pad 23 is arranged on the top surface of the upper supporting platform 6 and is used to support the nut 22 above the anchor pull link 21 to disperse the force and prevent local compression.

[0045] In this embodiment, a plurality of ribbed plates 15 are arranged at intervals on the cross arm 11 and below the connection between the cross arm 11 and the diagonal brace 12, and the weighing jack 3 is supported on the cross arm 11 and below the ribbed plates 15. The function of these ribbed plates 15 is to enhance the bending rigidity and bearing capacity of the cross arm 11, and ensure the stability of the structure during the weighing process; at the same time, it can also make the force of the weighing jack more uniform, reduce the influence of the concentrated load on the cross arm, and the existence of the ribbed plates can effectively disperse the load applied by the jack, and further improve the overall stability and safety of the structure.

[0046] In this embodiment, the diagonal brace 12 is provided with an end plate 18 at the upper end that abuts against the side wall of the upper support platform 6. The setting of this end plate 18 is intended to enhance the contact area between the diagonal brace 12 and the upper support platform 6, which can effectively disperse the contact pressure between the diagonal brace 12 and the side wall of the upper support platform 6 when subjected to force, reduce local stress concentration, and thus improve the stability and bearing capacity of the diagonal brace 12. The presence of the end plate 18 can also prevent the diagonal brace 12 from sliding or falling off when subjected to force, thereby ensuring the reliability of the diagonal brace 12 during the construction process. The cross arm 11 is provided with an anti-sway beam 14 for closely contacting the side wall of the upper support platform 6. The design purpose of the anti-sway beam 14 is to further enhance the stability of the entire structure during the rotation construction process, and to prevent the structure from swinging or tilting due to lateral force, that is, the anti-sway beam 14 can effectively limit the lateral displacement of the cross arm 11 through close contact with the side wall of the upper support platform 6, thereby enhancing the stability of the overall structure. The anti-sway beam 14 can help disperse the load applied to the cross arm 11, reduce local stress concentration, and ensure the safety of the structure during the construction process. When the bridge is rotated, the structure may be subjected to lateral wind force or other lateral forces. The design of the anti-sway beam 14 can effectively improve the structure's resistance to these forces. The cross arm 11 and the anti-sway beam 14 are made of channel steel. Channel steel has good bending strength, rigidity and stability, can effectively withstand lateral and longitudinal loads, and is also easy to install and connect during construction. The diagonal braces 12 and columns 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. They can effectively support the gravity of the bridge and resist various stresses during the construction process.

[0047] In another embodiment, the crossarm 11, the diagonal brace 12 and the column 13 constitute a single weighing bracket, and the weighing tripod 1 is composed of two weighing brackets arranged side by side at intervals, so that the weighing tripod is further enhanced in terms of bearing capacity and stability, can provide a larger bearing surface, and enhance the overall stability and uniformity. A plurality of spaced connecting members 16 are arranged between the two crossarms 11 and along the length direction of the crossarms 11. These connecting members 16 can effectively connect the two parallel crossarms 11 together to enhance the overall rigidity and stability. Steel plates, I-beams or channel steels can be used as connecting members. A bottom plate 17 for the anchor link 21 to pass through is provided at the bottom of the two crossarms 11. The design of the bottom plate 17 ensures the stable connection of the anchor link 21 and provides effective support for the force of the entire weighing bracket. At the same time, the bottom plate 17 is fully spread on the bottom of the two cross arms 11. This design provides a larger contact area, enhances the connection strength between the bottom plate 17 and the cross arms 11, and effectively disperses the load applied by the anchor link 21, thereby improving the stability of the overall structure. The upper ends of the two diagonal braces 12 share an end plate 18. This design simplifies the connection method of the structure, helps to improve the stability and bearing capacity of the diagonal braces, and ensures that the resistance between the upper support platform and the diagonal brace is more solid. The two cross arms 11 share an anti-sway beam 14. This design helps to enhance the connectivity between the two cross arms 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 further includes a pad 24 disposed between the pad 23 and the upper platform 6, which plays a supporting and adjusting role. 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 platform, and maintain a stable supporting effect.

[0049] like Figure 8 As shown, in this embodiment, the weighing auxiliary structure also includes a lower anchor assembly 4 set on the lower pedestal 7 and corresponding to the upper anchor assembly 2. Such a design ensures the effective cooperation between the upper anchor assembly and the lower anchor assembly, and provides necessary support for the rotation construction of the bridge. The single lower anchor assembly 4 is composed of a pre-embedded screw 41 and a double-threaded sleeve 42. The pre-embedded screw 41 provides anchoring force and connection points. Its lower end is anchored in the lower pedestal 7, and its upper end is higher than the lower pedestal 7 and is detachably connected to the anchor connecting rod 21 provided in the upper anchor assembly 2 through the double-threaded sleeve 42. Such a design makes the connection and disassembly process more convenient, and helps to ensure the safety and reliability of the structure during the bridge rotation weighing construction process, providing solid technical support for the smooth progress of the project.

[0050] In this embodiment, the weighing auxiliary structure also includes a rolling beam 5 for supporting the cross arm 11 of a single set of weighing tripods 1 to slide in and out from under the upper support platform 6, or the weighing auxiliary structure also includes a rolling beam 5 for supporting the cross arm 11 of multiple sets of weighing tripods 1 provided on any single side of the upper support platform 6 to slide in and out from under the upper support platform 6. The design of the rolling beam allows the cross arm 11 of the weighing tripod 1 to be flexibly moved during the construction process, thereby achieving better adjustment and positioning.

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

[0052] S1: Remove the upper anchor assembly connection; remove the double-headed threaded sleeve 42 connected between the anchor rod 21 of any group of upper anchor assembly 2 and the embedded screw 41 of the lower anchor assembly 4 to release the temporary anchoring structure between the upper platform 6 and the lower platform 7, and retain the upper anchor assembly 2;

[0053] S2: Adding a rolling beam; adding a rolling beam 5 to the lower platform 7 near the released 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 cross arm 11 of the weighing tripod 1 of the single weighing bracket into the space between the upper platform 6 and the lower platform 7 and penetrate the anchor link 21 of the upper anchor assembly 2 of the group, and the diagonal brace 12 and the anti-side swing beam 14 of the weighing tripod 1 are stopped at the side wall of the upper platform 6, and then screw the nut fastened to the anchor link 21 under the cross arm 11, and initially give the threaded steel a pre-tightening force of 20kN to eliminate the inelastic deformation between the structures;

[0055] S4: Setting a weighing jack; removing the rolling beam 5, and setting a weighing jack 3 on the lower support platform 7 outside the upper support platform 6 and below the cross arm 11;

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

[0057] S6: Implement graded loading and weighing; implement graded loading and weighing by weighing jacks 3 of weighing brackets on both sides arranged symmetrically relative to the upper platform 6, and stop after reaching a critical state to read relevant data, and during weighing, a micrometer is installed between the upper and lower platforms, with the displacement of the platform as the control reference to ensure accurate measurement data;

[0058] S7: jack pressure relief; after weighing is completed, all weighing jacks 3 are depressurized;

[0059] S8: dismantle the weighing bracket; add a rolling beam 5 to the lower support platform 7 near a single weighing bracket to be dismantled, remove the weighing jack 3 of the weighing bracket, and release the connection between the weighing tripod 1 and the upper anchor assembly 2; then use the rolling beam 5 to slide the cross arm 11 of the weighing tripod 1 of the single weighing bracket out from between the upper support platform 6 and the lower support platform 7 to remove the weighing tripod 1 and retain the upper anchor assembly 2;

[0060] S9: Assembling a temporary anchoring structure; connecting the anchoring connecting rod 21 of the upper anchoring assembly 2 with the embedded screw 41 of the lower anchoring assembly 4 by using a double-ended threaded sleeve 42 to assemble the temporary anchoring structure between the upper platform 6 and the lower platform 7;

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

[0062] In this way, the weighing adjustment method describes in detail the installation and removal of the weighing bracket during the bridge rotation construction process through a series of steps, ensuring the safety and reliability of the construction while improving work efficiency. Each step is closely linked to form a complete operation process, ensuring that construction personnel can complete the weighing operation effectively and conveniently.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A bridge horizontal rotation construction weighing auxiliary structure, characterized in that: The invention comprises at least 2n groups of weighing brackets arranged symmetrically on an upper support platform (6), wherein n is a natural number of 2 to 6, and a single group of the weighing brackets comprises a weighing tripod (1), an upper anchor assembly (2) and a weighing jack (3); the weighing tripod (1) is detachably mounted on the upper support platform (6) through the upper anchor assembly (2), and the weighing jack (3) is arranged between the weighing tripod (1) and a lower support platform (7); the weighing tripod (1) is composed of a cross arm (11), a diagonal brace (12), and a column (13); the cross arm (11) is arranged at the bottom of the upper support platform (6), and one end of the cross arm (11) is connected to the upper anchor assembly (2), and the other end is supported on the weighing jack (3); the diagonal brace (12 ) is arranged above the cross arm (11), and one end of the diagonal brace (12) is abutted against the side wall of the upper support platform (6), and the other end is fixed on the cross arm (11) and arranged away from the upper support platform (6); the column (13) is arranged close to the upper support platform (6) and supported between the cross arm (11) and the diagonal brace (12); the upper anchor pull assembly (2) is composed of an anchor pull rod (21), a nut (22), and a pad (23); the anchor pull rod (21) passes through the upper support platform (6) and the cross arm (11) in sequence from top to bottom and is fixedly connected by nuts (22) arranged at both ends thereof; the pad (23) is arranged on the top surface of the upper support platform (6) and is used to support the nut (22) above the anchor pull rod (21).

2. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1 is characterized in that: A plurality of ribbed plates (15) arranged at intervals are provided on the cross arm (11) and below the connection between the cross arm and the diagonal brace (12); the weighing jack (3) is supported on the cross arm (11) and below the ribbed plates (15).

3. The bridge horizontal rotation construction weighing auxiliary structure according to claim 2 is characterized in that: The diagonal brace (12) is provided with an end plate (18) at the upper end thereof abutting against the side wall of the upper support platform (6).

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

5. The bridge horizontal rotation construction weighing auxiliary structure according to claim 4 is characterized in that: The cross arm (11), the diagonal brace (12) and the column (13) constitute a single weighing bracket, and the weighing tripod (1) is composed of two weighing brackets arranged side by side and spaced apart, a plurality of spaced connecting members (16) are arranged between the two cross arms (11) and along the length direction of the cross arms (11), and a bottom plate (17) for the anchor tie rod (21) to pass through is provided at the bottom of the two cross arms (11).

6. The bridge horizontal rotation construction weighing auxiliary structure according to claim 5 is characterized in that: The bottom plate (17) is fully spread on the bottom of the two cross arms (11); the upper ends of the two diagonal braces (12) share one end plate (18); and the two cross arms (11) share one anti-sway beam (14).

7. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1 is characterized in that: The upper anchor assembly (2) further comprises a cushion block (24) arranged between the cushion plate (23) and the upper support platform (6).

8. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1 is characterized in that: The weighing auxiliary structure also includes a lower anchoring assembly (4) arranged on the lower support platform (7) and corresponding one-to-one with the upper anchoring assembly (2), wherein a single lower anchoring assembly (4) is composed of a pre-embedded screw rod (41) and a double-threaded sleeve (42), wherein the lower end of the pre-embedded screw rod (41) is anchored in the lower support platform (7), and the upper end thereof is higher than the lower support platform (7) and is detachably connected to an anchoring connecting rod (21) provided in the upper anchoring assembly (2) via the double-threaded sleeve (42).

9. The bridge horizontal rotation construction weighing auxiliary structure according to claim 1 is characterized in that: The weighing auxiliary structure also includes a rolling beam (5) for supporting a single group of weighing tripods (1) to slide in and out of the bottom of the upper support platform (6), or the weighing auxiliary structure also includes a rolling beam (5) for supporting a plurality of groups of weighing tripods (1) provided on any single side of the upper support platform (6) to slide in and out of the bottom of the upper support platform (6).

10. A weighing and adjustment method for bridge horizontal rotation construction, characterized in that: Using the bridge horizontal rotation construction weighing auxiliary structure as described in any one of claims 1 to 9, the weighing adjustment method comprises the following steps: S1. Remove the double-threaded sleeve (42) connecting the anchor connecting rod (21) of any group of upper anchoring assemblies (2) and the embedded screw (41) of the lower anchoring assembly (4) to release the temporary anchoring structure between the upper platform (6) and the lower platform (7), and retain the upper anchoring assembly (2); S2, adding a rolling beam (5) to the lower support (7) near the released temporary anchoring structure; S3, using a rolling beam (5) to slide the cross arm (11) of the weighing tripod (1) of the single weighing bracket between the upper support platform (6) and the lower support platform (7) and pass through the anchoring connecting rod (21) of the upper anchoring assembly (2), and the diagonal brace (12) and the anti-side swing beam (14) of the weighing tripod (1) are stopped at the side wall of the upper support platform (6), and then a nut fastened to the anchoring connecting rod (21) is screwed on the bottom of the cross arm (11); S4, remove the rolling beam (5), and set a weighing jack (3) on the lower support platform (7) outside the upper support platform (6) and below the cross arm (11); S5, repeat steps S1-S4 until all the weighing brackets are installed in place; S6, implementing graded loading and weighing by means of weighing jacks (3) of weighing brackets on both sides arranged symmetrically with respect to the upper platform (6), and stopping after reaching a critical state to read relevant data; S7. After weighing is completed, all weighing jacks (3) are depressurized, and then the entire set of weighing brackets are gradually removed, and the anchoring connecting rods (21) of the entire set of upper anchoring assemblies (2) are connected to the embedded screws (41) of the lower anchoring assemblies (4) using double-headed threaded sleeves (42) to restore the temporary anchoring structure between the upper support platform (6) and the lower support platform (7).

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