Bridge steel box girder floating crane hoisting adaptive anchoring mechanism and its topology optimization method

Abstract

The present application relates to the technical field of bridge construction, specifically a bridge steel box girder floating crane hoisting self-adaptive anchoring mechanism and its topology optimization method. The present application mainly ensures the stability of the bridge during hoisting by setting up a matching anchoring component and auxiliary structure, to meet the needs of stable construction and control strain under various conditions. It has better construction flexibility, improves the overall stiffness and stability of the anchoring structure, optimizes material distribution and structure design to improve the anti-deformation ability of the anchoring structure under dynamic load and water flow impact, reduces material consumption by removing unnecessary material parts, optimizes material utilization of the anchoring structure, and reduces construction cost. It ensures construction convenience by optimizing design for easy installation and debugging, reducing construction difficulty and time cost.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, in particular to a bridge steel box girder floating hoisting adaptive anchoring mechanism and a topology optimization method thereof. Background Art

[0002] The existing patent document with the announcement number CN111926715A discloses a method for installing a steel box girder bridge, which includes a first sub-section of a prefabricated steel box girder bridge located between the first pier and the second pier of the side span of the bridge; and a second sub-section located between the two second piers of the middle span of the bridge; constructing a sliding bracket pile foundation between the first pier and the second pier of each side span, and building a sliding bracket on the pile foundation; through the sliding bracket, the first sub-section that is hoisted by the floating crane block to the sliding bracket is installed in place to obtain a side span steel box girder bridge segment; by assembling a bridge deck crane on the side span steel box girder bridge segment, the middle span steel box girder bridge segment assembled by the second sub-section is hoisted to the installation position; at the installation position, the middle span segment is connected with the side span steel box girder segment to obtain a steel box girder bridge.

[0003] The floating hoisting of steel box girders is a critical step in large-scale bridge construction, and it carries high technical difficulty and safety risks. Traditional anchoring mechanisms often struggle to adapt to the dynamic changes in steel box girders caused by environmental factors such as water flow and wind during the floating hoisting process, resulting in poor anchoring and even safety accidents. Furthermore, traditional design methods lack intelligence and automation, and are unable to respond in real time to complex situations during the hoisting process. They are not flexible enough to meet actual construction needs, increasing construction difficulty and cost. Therefore, developing a floating hoisting adaptive anchoring mechanism with an efficient topological structure that can adapt to the dynamic response of steel box girders and an optimization method for this mechanism is of great significance for improving the safety and economy of bridge construction.

[0004] To this end, the present invention proposes an adaptive anchoring mechanism for floating crane installation of bridge steel box girders and a topology optimization method thereof to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an adaptive anchoring mechanism for floating crane installation of bridge steel box girders and a topology optimization method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an adaptive anchoring mechanism for floating crane installation of bridge steel box girders, comprising an anchoring assembly and an auxiliary structure, wherein the anchoring assembly is arranged on the bridge, and the anchoring assembly is connected to the lifting cable, and the lifting cable is arranged on the floating crane platform body, and the anchoring assembly is connected to the auxiliary structure.

[0007] Preferably, the anchor assembly includes a hanging rod, a lifting ring, a frame plate, a bearing top plate, a connecting bottom plate, a regulating hydraulic cylinder, a pushing column, an anchor hole, an auxiliary spring, an auxiliary plate, a through hole, an anchor screw, a limit stop plate, a damping sleeve and an internal thread locking ring; the hanging rod is fixedly arranged on the bearing top plate, and the top end of the hanging rod is fixedly provided with a lifting ring at an equal distance, the lifting ring is connected to the lifting cable, the bearing top plate is fixedly arranged on the top end of the frame plate, the bottom end of the frame plate is fixedly provided with a connecting bottom plate, and the bearing top plate is provided with a lifting ring at an equal distance A regulating hydraulic cylinder is provided, one end of the regulating hydraulic cylinder is connected to the pushing column, anchor holes are equidistantly provided on the connecting base plate, an auxiliary spring is fixedly provided at the hole position on one side of the anchor hole, the other end of the auxiliary spring is fixedly provided on the auxiliary plate, and through holes are symmetrically provided on the auxiliary plate, a limited stop plate is fixedly provided at one end of the anchor screw, and a damping sleeve is provided on the anchor screw, the internal thread locking ring is threadedly connected to the anchor screw, and an auxiliary structure is provided on the anchor screw.

[0008] Preferably, the connection bottom plate and the bearing top plate are arranged at corresponding positions and have the same number of groups.

[0009] Preferably, two through holes are symmetrically provided on the auxiliary plate, and the through holes and the anchor holes are provided at corresponding positions and in the same number of groups, and their central axes are on the same straight line.

[0010] Preferably, the auxiliary plate, the regulating hydraulic cylinder and the pushing column are arranged in corresponding positions and the same number of groups, and one end of the pushing column is in contact with the auxiliary plate.

[0011] Preferably, one end of the anchoring screw passes through the damping sleeve and then passes through the anchoring hole and the through hole.

[0012] Preferably, the auxiliary structure includes an internal threaded pressure ring, a fixed sleeve, a movable pressure column, a connecting spring, a threaded hole groove, a locking threaded column and a handle; the internal threaded pressure ring is threadedly connected to the anchor screw, and a fixed sleeve is symmetrically fixed on the bottom side of the internal threaded pressure ring, a movable pressure column is movably arranged in the fixed sleeve, one end of the movable pressure column is fixedly provided with a connecting spring, and the other end of the connecting spring is fixedly provided in the fixed sleeve, threaded hole grooves are symmetrically provided in the internal threaded pressure ring, the threaded hole grooves are threadedly connected to the locking threaded column, and a handle is fixedly provided at one end of the locking threaded column.

[0013] Preferably, the internal thread pressure ring and the internal thread locking ring are arranged in corresponding positions and the number of sets is the same.

[0014] A topology optimization method for an adaptive anchoring mechanism for floating crane installation of a bridge steel box girder is provided. The topology optimization method is as follows:

[0015] S1: Establish an initial model: Use computer-aided design software to establish an initial three-dimensional model of the adaptive anchoring mechanism for the floating crane installation of the bridge steel box girder. The model should include all key components and detailed features, and be preliminarily designed based on the actual lifting requirements and the characteristics of the floating crane platform. At the same time, consider the influence of water flow conditions on the anchoring structure and establish a fluid-structure interaction analysis model.

[0016] S2: Define design variables and constraints: Define the design variables and constraints during the topology optimization process. The design variables should fully reflect the geometric characteristics and material distribution of the anchoring structure. The constraints should ensure that the optimized structure meets all usage requirements and stability under water flow conditions.

[0017] S3: Topology Optimization Analysis: Using professional topology optimization software, the initial model undergoes multiple rounds of iterative calculations. During the optimization process, the software automatically removes material components that contribute less to structural performance and strengthens critical stress-bearing areas. Furthermore, considering the impact of fluid-structure interaction on structural performance, the anchoring structure undergoes fluid-structure interaction topology optimization analysis. By continuously adjusting design variables and constraints, the optimal material distribution solution is found.

[0018] S4: Result Verification and Optimization: The topology optimized model is verified by finite element analysis and fluid-structure interaction simulation to ensure that it meets all design requirements and constraints. If it does not meet the requirements, the design variables and constraints are adjusted and the optimization analysis is repeated. At the same time, the optimization results are further verified and optimized based on experimental data and engineering experience. By comparing the structural performance and economic indicators under different optimization schemes, the optimal scheme is selected as the final design scheme.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention mainly ensures the stability of the bridge during the hoisting construction by setting up suitable anchoring components and cooperating with auxiliary structures, so as to meet the needs of stable construction and control strains in various situations; the construction flexibility is better; the overall stiffness and stability of the anchoring structure are improved: by optimizing material distribution and structural design, the deformation resistance of the anchoring structure when bearing the dynamic load of the steel box girder and the impact of water flow is improved; material consumption is reduced: by removing unnecessary material parts, the material utilization rate of the anchoring structure is optimized, and the construction cost is reduced; construction convenience is ensured: the optimized design should be convenient for on-site installation and debugging, and reduce the difficulty and time cost of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structural connection between the floating crane, bridge and anchoring mechanism of the present invention;

[0022] Figure 2 For the present invention Figure 1The partial enlarged schematic view of the structure connection in the middle;

[0023] Figure 3 The top view of the structure connection of the anchoring assembly in the application;

[0024] Figure 4 The anchoring assembly in the application Figure 3 The partial enlarged schematic view of the structure connection in the middle;

[0025] Figure 5 The bottom view of the structure connection of the anchoring assembly in the application;

[0026] Figure 6 The top view of the structure connection of the anchoring assembly and the auxiliary structure in the application;

[0027] Figure 7 The bottom view of the structure connection of the anchoring assembly and the auxiliary structure in the application;

[0028] Figure 8 The schematic view of the auxiliary structure in the application;

[0029] Figure 9 The topological optimization construction system diagram of the application.

[0030] In the figure: floating crane platform main body 1, sling cable 2, bridge 3, anchoring assembly 4, hanging rod 401, lifting ring 402, frame plate 403, bearing top plate 404, connecting bottom plate 405, control hydraulic cylinder 406, pushing column body 407, anchoring hole 408, auxiliary spring 409, auxiliary plate 410, through hole 411, anchoring screw 412, limiting disc 413, damping sleeve 414, internal thread locking ring 415, internal thread pressing ring 501, fixed sleeve 502, movable pressing column 503, connecting spring 504, threaded hole groove 505, locking threaded column 506, handle 507. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be described clearly and completely below. All other embodiments obtained by the person skilled in the art without creative labor on the basis of the embodiments in the application belong to the protection scope of the application.

[0032] Embodiment one: please refer to Figures 1-9 A bridge steel box girder floating crane hoisting self-adaptive anchoring mechanism, comprising an anchoring assembly 4 and an auxiliary structure, the anchoring assembly 4 is arranged on the bridge 3, and the anchoring assembly 4 is connected with the sling cable 2, the sling cable 2 is arranged on the floating crane platform main body 1, and the anchoring assembly 4 is connected with the auxiliary structure.

[0033] And the application provides a topological optimization method of the bridge steel box girder floating crane hoisting self-adaptive anchoring mechanism, the topological optimization method is:

[0034] S1: Initial Model Creation: Use computer-aided design software (such as SolidWorks or ANSYS) to create an initial 3D model of the adaptive anchoring mechanism for the floating crane installation of the bridge steel box girder. The model should include all key components and detailed features, and a preliminary design should be conducted based on the actual lifting requirements and the characteristics of the floating crane platform. Furthermore, a fluid-structure interaction analysis model should be established, taking into account the impact of water flow conditions on the anchoring structure.

[0035] S2: Define design variables and constraints: Define the design variables (such as the size, shape, location, and material properties of the anchor units) and constraints (such as mechanical performance requirements such as strength, stiffness, and stability, as well as practical constraints such as ease of construction and cost control) during the topology optimization process. Design variables should fully reflect the geometric characteristics and material distribution of the anchor structure; constraints should ensure that the optimized structure meets all operational requirements and meets stability under water flow conditions.

[0036] S3: Topology Optimization Analysis: Using professional topology optimization software (such as Altair OptiStruct and ANSYS Topology Optimization), the initial model undergoes multiple rounds of iterative calculations. During the optimization process, the software automatically removes material that contributes less to structural performance and reinforces critical stress-bearing areas. Furthermore, considering the impact of fluid-structure interaction on structural performance, a fluid-structure interaction topology optimization analysis is performed on the anchor structure. By continuously adjusting design variables and constraints, the optimal material distribution solution is found.

[0037] S4: Result Verification and Optimization: The topology-optimized model is verified through finite element analysis and fluid-structure interaction simulation to ensure that it meets all design requirements and constraints. If not, the optimization analysis is repeated with adjustments to the design variables and constraints. Furthermore, the optimization results are further verified and optimized using experimental data and engineering experience. By comparing the structural performance and economic indicators of different optimization schemes, the optimal solution is selected as the final design.

[0038] The present invention mainly ensures the stability of the bridge during the hoisting construction by setting up compatible anchoring components and coordinating them with auxiliary structures, so as to meet the needs of stable construction and control strain in various situations.

[0039] Example 2: Based on Example 1, please refer to Figure 2-Figure 7The anchor assembly 4 here includes a hanging rod 401, a lifting ring 402, a frame plate 403, a bearing top plate 404, a connecting bottom plate 405, a regulating hydraulic cylinder 406, a pushing column 407, an anchor hole 408, an auxiliary spring 409, an auxiliary plate 410, a through hole 411, an anchor screw 412, a limit stopper 413, a damping sleeve 414 and an internal thread locking ring 415; the hanging rod 401 is fixedly set on the bearing top plate 404, and the top of the hanging rod 401 is fixedly provided with a lifting ring equidistantly. 402, the lifting ring 402 is connected to the lifting cable 2, the bearing top plate 404 is fixedly set on the top of the frame plate 403, the bottom end of the frame plate 403 is fixedly set with a connecting bottom plate 405, the bearing top plate 404 is equidistantly provided with a regulating hydraulic cylinder 406, one end of the regulating hydraulic cylinder 406 is connected to the pushing column 407, and the connecting bottom plate 405 is equidistantly provided with anchor holes 408, one side of the anchor hole 408 is fixedly provided with an auxiliary spring 409, and the other end of the auxiliary spring 409 is fixedly provided with an auxiliary spring 409. The auxiliary plate 410 is fixedly provided with a through hole 411 symmetrically provided on the auxiliary plate 410, a limited stopper 413 is fixedly provided at one end of the anchor screw 412, and a damping sleeve 414 is sleeved on the anchor screw 412, an internal thread locking ring 415 is threadedly connected to the anchor screw 412, and an auxiliary structure is provided on the anchor screw 412; the connection bottom plate 405 here corresponds to the position of the bearing top plate 404 and the number of sets is the same; the auxiliary plate 410 here is symmetrically provided with a limited stopper 413, and the anchor screw 412 is sleeved with a damping sleeve 414, and the internal thread locking ring 415 is threadedly connected to the anchor screw 412. Two through holes 411 are provided, and the through holes 411 correspond to the anchor holes 408 in setting positions and are provided in the same number of groups, and the central axes of the two are on the same straight line; the auxiliary plate 410 here corresponds to the regulating hydraulic cylinder 406 and the pushing column 407 in setting positions and are provided in the same number of groups, and one end of the pushing column 407 is in contact with the auxiliary plate 410; one end of the anchor screw 412 here passes through the damping sleeve 414, and then passes through the anchor hole 408 and the through hole 411.

[0040] In this embodiment, after the bridge 3 is anchored and connected to the connecting base plate 405 using the anchoring screw 412, it is hoisted by the hoisting cable 2. If shaking or instability occurs during this process, the adjustable hydraulic cylinder 406 can be used to drive the pushing column 407 to push the auxiliary plate 410. Here, the adjustable hydraulic cylinder 406 is arranged in multiple groups at equal intervals on the load-bearing top plate 404, that is, the pushing column 407 is driven by the adjustable hydraulic cylinder 406 at the corresponding position, and the auxiliary plate 410 at the corresponding position is driven to improve the connection stability of the anchoring screw 412.

[0041] Example 3: Based on Example 2, please refer to Figure 8The auxiliary structure here includes an internal threaded pressure ring 501, a fixed sleeve 502, a movable pressure column 503, a connecting spring 504, a threaded hole groove 505, a locking threaded column 506 and a handle 507; the internal threaded pressure ring 501 is threadedly connected to the anchor screw 412, and the fixed sleeve 502 is symmetrically fixed on the bottom side of the internal threaded pressure ring 501, and a movable pressure column 503 is movably arranged in the fixed sleeve 502, one end of the movable pressure column 503 is fixedly provided with a connecting spring 504, and the other end of the connecting spring 504 is fixedly set in the fixed sleeve 502, and threaded hole grooves 505 are symmetrically provided in the internal threaded pressure ring 501, and the threaded hole grooves 505 are threadedly connected to the locking threaded column 506, and one end of the locking threaded column 506 is fixedly provided with a handle 507; the internal threaded pressure ring 501 here is arranged in a corresponding position to the internal threaded locking ring 415 and has the same number of arrangements.

[0042] An internal threaded pressure ring 501 is provided here, and a fixed sleeve 502 and a movable pressure column 503 are provided on the internal threaded pressure ring 501. The purpose is to have an extrusion and locking effect on the internal threaded locking ring 415, further improving the locking stability of the internal threaded locking ring 415, thereby improving the anchoring firmness of the anchoring assembly.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive anchoring mechanism for floating hoisting of bridge steel box girders, characterized by: The invention comprises an anchoring assembly (4) and an auxiliary structure, wherein the anchoring assembly (4) is arranged on the bridge (3), and the anchoring assembly (4) is connected to the suspension cable (2), the suspension cable (2) is arranged on the floating platform body (1), and the anchoring assembly (4) is connected to the auxiliary structure; The anchoring assembly (4) comprises a hanging rod (401), a lifting ring (402), a frame plate (403), a bearing top plate (404), a connecting bottom plate (405), a regulating hydraulic cylinder (406), a pushing column (407), an anchoring hole (408), an auxiliary spring (409), an auxiliary plate (410), a through hole (411), an anchoring screw (412), a limit stop plate (413), a damping sleeve (414) and an internal thread locking ring (415); the hanging rod (401) is fixedly arranged on the bearing top plate (404), and the top end of the hanging rod (401) is fixedly provided with a lifting ring (402) at an equal distance, and the lifting ring (402) is connected to the lifting cable (2); the bearing top plate (404) is fixedly arranged on the top end of the frame plate (403), and the bottom end of the frame plate (403) is fixedly provided with a connecting bottom plate (40 5), regulating hydraulic cylinders (406) are equidistantly arranged on the bearing top plate (404), one end of the regulating hydraulic cylinder (406) is connected to the pushing column (407), and anchoring holes (408) are equidistantly arranged on the connecting bottom plate (405), an auxiliary spring (409) is fixedly arranged at the hole position on one side of the anchoring hole (408), the other end of the auxiliary spring (409) is fixedly arranged on the auxiliary plate (410), and the auxiliary plate (410) is symmetrically provided with through holes (411), one end of the anchoring screw (412) is fixedly provided with a limited stopper (413), and the anchoring screw (412) is provided with a damping sleeve (414), the internal thread locking ring (415) is threadedly connected to the anchoring screw (412), and the anchoring screw (412) is provided with an auxiliary structure.

2. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 1 is characterized in that: The connection bottom plate (405) and the bearing top plate (404) are arranged at corresponding positions and have the same number of groups.

3. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 1 is characterized in that: Two through holes (411) are symmetrically arranged on the auxiliary plate (410), and the through holes (411) and the anchor holes (408) are arranged at corresponding positions and in the same number of groups, and the central axes of the two are on the same straight line.

4. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 1 is characterized in that: The auxiliary plate (410), the regulating hydraulic cylinder (406), and the pushing column (407) are arranged at corresponding positions and are arranged in the same number of groups, and one end of the pushing column (407) is in contact with the auxiliary plate (410).

5. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 1 is characterized in that: One end of the anchoring screw (412) passes through the damping sleeve (414), and then passes through the anchoring hole (408) and the through hole (411).

6. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 1 is characterized in that: The auxiliary structure comprises an internal threaded pressure ring (501), a fixed sleeve (502), a movable pressure column (503), a connecting spring (504), a threaded hole groove (505), a locking threaded column (506) and a handle (507); the internal threaded pressure ring (501) is threadedly connected to the anchor screw (412), and the bottom side of the internal threaded pressure ring (501) is symmetrically fixed with a fixed sleeve (502), a movable pressure column (503) is movably arranged in the fixed sleeve (502), one end of the movable pressure column (503) is fixedly provided with a connecting spring (504), the other end of the connecting spring (504) is fixedly arranged in the fixed sleeve (502), the internal threaded pressure ring (501) is symmetrically provided with threaded hole grooves (505), the threaded hole grooves (505) are threadedly connected to the locking threaded column (506), and one end of the locking threaded column (506) is fixedly provided with a handle (507).

7. The adaptive anchoring mechanism for floating hoisting of bridge steel box girders according to claim 6, characterized in that: The internal thread pressing ring (501) and the internal thread locking ring (415) are arranged at corresponding positions and have the same number of groups.

8. A topology optimization method for an adaptive anchoring mechanism for floating crane installation of a bridge steel box girder according to any one of claims 1 to 7, characterized in that: The topology optimization method is: S1: Establish an initial model: Use computer-aided design software to establish an initial three-dimensional model of the adaptive anchoring mechanism for the floating crane installation of the bridge steel box girder. The model should include all key components and detailed features, and be preliminarily designed based on the actual lifting requirements and the characteristics of the floating crane platform. At the same time, consider the influence of water flow conditions on the anchoring structure and establish a fluid-structure interaction analysis model. S2: Define design variables and constraints: Define the design variables and constraints in the topology optimization process; The design variables should be able to fully reflect the geometric characteristics and material distribution of the anchoring structure; the constraints should ensure that the optimized structure meets all usage requirements and stability under water flow conditions; S3: Topology Optimization Analysis: Professional topology optimization software is used to perform multiple rounds of iterative calculations on the initial model. During the optimization process, the software automatically removes material portions that contribute less to structural performance and strengthens critical stress-bearing areas. Furthermore, considering the impact of fluid-structure coupling on structural performance, a fluid-structure coupling topology optimization analysis is performed on the anchor structure. By continuously adjusting design variables and constraints, the optimal material distribution solution is found. S4: Result Verification and Optimization: The topology optimized model is verified by finite element analysis and fluid-structure interaction simulation to ensure that it meets all design requirements and constraints. If it does not meet the requirements, the design variables and constraints are adjusted and the optimization analysis is repeated. At the same time, the optimization results are further verified and optimized based on experimental data and engineering experience. By comparing the structural performance and economic indicators under different optimization schemes, the optimal scheme is selected as the final design scheme.

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