A method for precise positioning construction of a swivel bridge

Abstract

The application relates to the field of bridge construction equipment, in particular to a precise positioning construction method of a swivel bridge, which is characterized in that a power consumption receiving device is installed at the beam end position of a swivel beam body, the power consumption receiving device is installed at the front position of the swivel direction of the swivel beam body; the power consumption receiving device removes the kinetic energy of the swivel beam body and converts the kinetic energy or part of the kinetic energy into dynamic potential energy for storage, so that the rotation of the swivel beam body is slowly stopped through the power consumption receiving device; the swivel beam body is subjected to rotary jacking for precise adjustment of the position and posture, and the rotary jacking is realized by combining external force and the dynamic potential energy stored in the power consumption receiving device. The application has the following advantages: 1) high safety, the excessive kinetic energy of the swivel beam is removed by multiple devices multiple times in stages during the stopping process, so that the damage of the beam body and the risk of structure overturning caused by forced stopping are greatly reduced; 2) the swivel positioning at the beam end position is more accurate and effective; 3) the inertial drift phenomenon of the beam body caused by the step-by-step adjustment at the beam end position is more controllable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge construction equipment, in particular to a precise positioning construction method of a swivel bridge, which is suitable for the swiveling and precise positioning of various types of bridge swiveling, and ensures the safe and precise completion of the swiveling construction. BACKGROUND

[0002] In recent years, with the popularization and application of swivel bridge construction, various types of bridge construction involving crossing railways and three-dimensional intersections often consider using swivel construction technology to solve spatial conflicts. In traditional swivel construction, the beam body often over-rotates or under-rotates. Since the swivel operation is often at the main pier, through the magnification effect of the main beam span, the micro-operation at the main pier often magnifies by dozens of times or more. The beam body often hovers between over-rotation and under-rotation during adjustment and positioning. Due to the very low dynamic and static friction coefficient of the rotating hinge and the problem of rotational inertia, the beam body often cannot stop at the ideal position. Therefore, it is particularly important to ensure the safe stopping of the swivel beam and to ensure that the swivel beam can be fine-tuned after stopping.

[0003] The main difficulties of the traditional swivel beam positioning method are as follows: first, the swivel construction is at the pier column position. Due to the magnification effect of the beam span, it is not practical to adjust the beam end positioning accuracy through the swivel device at the pier column. Second, due to the very low dynamic and static friction coefficient of the rotating hinge, the beam body will slide a certain distance before slowly stopping after rotating. The sliding distance is uncontrollable, and the beam end often comes and goes at the precise positioning point, and cannot stop at the ideal position. Third, the operation space at the main pier is limited, and the swivel power system often only has one-way, and cannot be corrected once it is over-rotated. Fourth, the swivel beam is too heavy in its own weight, and the rotational kinetic energy is very large. If a rigid beam stopping device is forcibly set at the precise positioning point, it is easy to cause damage to the beam body and even the main bridge structure to overturn.

[0004] Based on the above reasons, it is very important to quickly and stably stop the swivel beam near the precise positioning point and slowly and safely position it accurately. SUMMARY

[0005] The purpose of the present application is to provide a precise positioning construction method of a swivel bridge according to the shortcomings of the prior art. The swivel beam rotating state is stopped by the combination of energy dissipation devices (kinetic energy is converted into deformation and potential energy), the beam body is slowly and accurately positioned by the fine-tuning hydraulic device, the beam body is safely and slowly unloaded by the energy dissipation device, and the beam body attitude is adjusted to the ideal position by the fine-tuning hydraulic device.

[0006] The purpose of the present application is achieved by the following technical solutions:

[0007] A precise positioning construction method of a swivel bridge, characterized in that the construction method comprises:

[0008] A energy consumption receiving device is installed at the beam end position of the swivel beam body, and the energy consumption receiving device is installed at the front position of the swivel beam body in the swivel direction; the energy consumption receiving device removes the kinetic energy of the swivel beam body and converts the kinetic energy or part of the kinetic energy into potential energy storage, so that the rotation of the swivel beam body is slowly stopped through the energy consumption receiving device;

[0009] The swivel beam body is rotated and pushed to accurately adjust its position and posture, and the rotation and pushing is realized by combining external force and potential energy stored in the energy consumption receiving device.

[0010] The energy consumption receiving device adopts a multi-stage energy consumption combination, and the energy consumption capacity gradually increases from the outside to the inside along the direction of receiving the kinetic energy of the swivel beam body.

[0011] The energy consumption mode of the energy consumption receiving device includes deformation, that is, a deformable elastic member is arranged in the energy consumption receiving device, and the elastic member is deformed to consume energy and convert it into potential energy storage when receiving the kinetic energy of the swivel beam body.

[0012] A plurality of elastic members with different stiffnesses are arranged in the energy consumption receiving device to form multi-stage energy consumption, and the stiffness of each elastic member gradually increases from the outside to the inside along the direction of receiving the kinetic energy of the swivel beam body.

[0013] The energy consumption mode of the energy consumption receiving device includes sliding, that is, a slidable component is arranged in the energy consumption receiving device, and the slidable component slides to consume energy when receiving the kinetic energy of the swivel beam body.

[0014] A counterforce support is arranged behind the energy consumption receiving device along the direction of receiving the kinetic energy of the swivel beam body, and a pushing device for applying external force required for rotation and pushing of the swivel beam body is arranged between the counterforce support and the energy consumption receiving device.

[0015] An elastic member for energy consumption is arranged between the energy consumption receiving device and the counterforce support.

[0016] The advantages of the present application are:

[0017] 1) High safety, the excess kinetic energy of the swivel beam is removed by multiple devices multiple times in stages during the stopping process, which greatly reduces the risk of beam body damage and structure overturning caused by forced stopping;

[0018] 2) The swivel is more accurate and effective in the beam end position;

[0019] 3) The inertial drift phenomenon of the beam body caused by the step-by-step adjustment in the beam end position is more controllable;

[0020] 4) The complete set of equipment has low cost, controllable rotation positioning accuracy, safe and controllable rotation energy consumption, and the equipment can be recycled. Attached Figure Description

[0021] Figure 1 This is a schematic elevation view of the installation structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the mounting structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation position of the present invention;

[0024] Figure 4 This is an elevation view of the installation location of the present invention. Implementation

[0025] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0026] like Figures 1-4 As shown in the figure, markings 1-12 and A and B respectively represent: 1. Rotating beam body, 2. Reaction device wall panel, 3. Reaction device diagonal brace, 4. Reaction device base plate, 5. Cap beam, 6. Reaction device fixing bolt, 7. Hydraulic device for beam posture adjustment, 8. Energy dissipation spring assembly, 9. Energy dissipation bearing device, 10. Rotating beam energy dissipation bearing device trolley, 11. Perforated rubber plate, 12. Low stiffness energy dissipation rubber plate, 13. Installation position A, and 14. Installation position B.

[0027] Example: The precise positioning construction method for the rotating bridge in this example is applied to the rotation method construction of rotating beam 1. Combined with... Figure 3 and Figure 4 As shown, the rotating beam 1 is supported on a column, and a support platform and a rotating hinge are provided below the column. The support platform and the rotating hinge serve as fulcrums for the beam to rotate into position. In the construction method of this embodiment, the following can be used: Figure 1 and Figure 2 The device shown is implemented, but is not limited to the device shown in the figure.

[0028] Specifically, the construction method of this embodiment includes the following steps:

[0029] 1) A hole is made on the upper surface of the side pier cap beam 5 at the outline position of the rotating beam 1 to be in place (considering the installation position according to the appropriate over-rotation amount). This hole can also be a pre-drilled hole during the fabrication of the cap beam 5. A reaction force device and an energy dissipation support device are installed at this hole position, located at the beam end of the rotating beam 1. The reaction force support is used to provide reaction force for the energy dissipation support device to effectively support the kinetic energy of the rotating beam 1 and at the same time provide reaction force for the micro-adjustment of the rotating beam 1, while the energy dissipation support device is the main part for supporting the kinetic energy of the rotating beam 1.

[0030] The reaction support consists of a reaction device wall panel 2, a reaction device diagonal brace 3, and a reaction device base plate 4. The reaction device base plate 4 has several openings, which can be fixed to the beam end of the cap beam 5 by the reaction device fixing bolts 6, corresponding to the outline of the rotating beam 1 that is about to be placed. The reaction device wall panel 2 is erected on the reaction device wall panel 2, and the reaction device diagonal brace 3 is set between the reaction device base plate 4 and the reaction device wall panel 2 to improve the structural strength and stability of the entire reaction support.

[0031] The energy-dissipating support device 9 includes a rotating beam energy-dissipating support device trolley 10, a perforated rubber plate 11, and a low-stiffness energy-dissipating rubber plate 12. The rotating beam energy-dissipating support device trolley 10 is mounted on the reaction device base plate 4, and the two are in sliding contact. A vertical plate is installed above the rotating beam energy-dissipating support device trolley 10. On one side of this vertical plate are the perforated rubber plate 11 and the low-stiffness energy-dissipating rubber plate 12. The stiffness of the low-stiffness energy-dissipating rubber plate 12 is slightly lower than that of the perforated rubber plate 11, thus allowing the energy-dissipating support device 9 to dissipate energy twice with different stiffnesses when supporting the rotating beam 1.

[0032] In this embodiment, a slide can be provided on the reaction device base plate 4 along the facing direction of the rotating beam 1. At the same time, the wheels of the rotating beam energy dissipation receiving device trolley 10 are placed in the slide and slide along the slide, thereby realizing the sliding limit of the trolley and ensuring its stability when receiving kinetic energy.

[0033] like Figure 1 and Figure 2 As shown, an energy-dissipating spring assembly 8 is provided between the reaction support and the energy-dissipating receiving device 9, which serves as another stage of energy dissipation. The energy-dissipating spring assembly 8 further supplements the energy dissipation of the energy-dissipating receiving device 9 to dissipate energy.

[0034] 2) Carry out the rotation construction of rotating beam 1.

[0035] When the rotating beam 1 rotates and collides with the low-stiffness energy-dissipating rubber plate 12, the low-stiffness energy-dissipating rubber plate 12 deforms due to its low stiffness to release the stress at the contact surface and dissipate energy for the first time, and transfers the remaining kinetic energy to the perforated rubber plate 11. The perforated rubber plate 11, through its porous nature, deforms to dissipate energy for the second time, and transfers the remaining kinetic energy to the rotating beam energy-dissipating receiving device 9. The rotating beam energy-dissipating receiving device 9 releases energy for the third time by sliding the rotating beam energy-dissipating receiving device trolley 10 on the reaction device base plate 4. After displacement, the rotating beam energy-dissipating receiving device 9 transfers the excess kinetic energy to the energy-dissipating spring assembly 8. The energy-dissipating spring assembly 8 provides sufficient stiffness support and provides the beam with a stopping reaction force support after completing the fourth kinetic energy release through two springs of different stiffnesses.

[0036] During this process, the low-stiffness energy-dissipating rubber plate 12, the perforated rubber plate 11, and the energy-dissipating spring assembly 8 deform, thus essentially converting the rotational kinetic energy of the rotating beam 1 into dynamic potential energy and storing it through deformation. The sliding rotating beam energy-dissipating support device trolley 10 is mainly used for releasing kinetic energy, preventing the energy-dissipating support structure from failing due to excessive kinetic energy being borne by the rotating beam 1 when using only elastic energy-dissipating components. In this embodiment, kinetic energy dissipation is achieved through a combination of deformation storage and sliding release, complementing each other to improve energy dissipation efficiency.

[0037] Meanwhile, in this embodiment, the stiffness of the low-stiffness energy-dissipating rubber plate 12, the perforated rubber plate 11, and the energy-dissipating spring assembly 8 is gradually increased so that when the rotating beam 1 touches the first-stage energy-dissipating device during rotation, stress is released and energy is dissipated for the first time with a slight contact, thus achieving a "deceleration effect". This avoids damage to the beam or even structural overturning caused by "sudden stop" or "forced stop" due to large reaction forces on the rotating beam 1. As the rotating beam 1 rotates further, the energy dissipation capacity is gradually increased, so that the stopping process of the rotating beam 1 is a gradual deceleration process from deceleration to stop, ensuring the safety of the rotation construction.

[0038] In some cases, depending on the amount of kinetic energy generated by the rotating beam 1 during the rotation construction, more different levels of elastic energy-dissipating components can be configured, such as more energy-dissipating plates or springs. These components are mainly located on the energy-dissipating support device 9 or between the energy-dissipating support device 9 and the reaction support. Conversely, the number of energy-dissipating devices can be appropriately reduced.

[0039] 3) After the rotating beam 1 has come to a stop (at this time, the beam is in a slightly over-rotated state), the hydraulic device 7 for adjusting the beam posture, which is set between the reaction support and the energy dissipation bearing device 9, rotates to push the rotating beam energy dissipation bearing device 9, the perforated rubber plate 11 and the low stiffness energy dissipation rubber plate 12 to slowly and gradually push the rotating beam 1 to rotate in the design position direction until the precise positioning work is completed.

[0040] At this time, the rotational jacking force of the rotating beam 1 is achieved by the hydraulic device 7 for beam attitude adjustment and the energy dissipation components that have stored kinetic potential energy at each stage. That is, the energy dissipation components are gradually released as the rotating beam 1 rotates and is jacked, thus working together with the hydraulic device 7 for beam attitude adjustment to rotate and jack the rotating beam 1 to the design position.

[0041] During this process, the rotation and jacking of the rotating beam 1 is also controlled. In actual construction, after the rotating beam 1 is jacked by the hydraulic device 7 for beam posture adjustment, the rotational inertia of the rotating beam 1 and the kinetic potential energy stored in the energy-consuming components can be used to jack the rotating beam 1. The whole process is smooth and relatively slower, avoiding the over-rotation that is easy to occur when using a hydraulic device for jacking (from over-rotation to under-rotation), thereby significantly improving the positioning accuracy of the rotating beam 1.

[0042] In the specific implementation of this embodiment: as follows: Figure 3 and Figure 4 As shown in the figure, the installation positions of the device in this embodiment are indicated. Installation position B indicates that the device should be installed in the receiving direction of the rotating beam 1 to smoothly receive the rotating kinetic energy; while installation position A indicates that the device should be installed at the beam end of the rotating beam 1 to make the rotating positioning of the rotating beam 1 more accurate and efficient.

[0043] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A method for precisely positioning a swing bridge, characterized in that: The construction method includes: At the outline of the rotating beam that is about to be in place on the upper surface of the side pier cap beam, a hole is made at the installation position considering an appropriate over-rotation amount. A reaction device and an energy dissipation and support device are installed at this hole position. The energy dissipation and support device is installed at the facing position of the rotating beam in the direction of rotation. The energy dissipation and support device removes the kinetic energy of the rotating beam and converts the kinetic energy or part of the kinetic energy into kinetic potential energy for storage, so that the rotation of the rotating beam is slowly stopped by the energy dissipation and support device. The rotating beam is rotated and pushed to precisely adjust its position and attitude. The rotation and pushing are achieved by combining external force and the kinetic potential energy stored in the energy-consuming support device. The energy-consuming receiving device adopts a multi-stage energy-consuming combination method, with the energy-consuming capacity of each stage gradually increasing from the outside to the inside along the direction of its receiving the kinetic energy of the rotating beam. The energy dissipation method of the energy dissipation receiving device includes deformation, that is, a deformable elastic element is configured in the energy dissipation receiving device. When the elastic element receives the kinetic energy of the rotating beam, it deforms to dissipate energy and converts it into kinetic potential energy for storage. Along the direction of the kinetic energy of the rotating beam, a reaction support is set behind the energy-dissipating support device, and a jacking device is set between the reaction support and the energy-dissipating support device to apply the external force required for the rotation and jacking of the rotating beam.

2. The method for precise positioning of a swing bridge according to claim 1, characterized in that: Multiple elastic elements with different stiffnesses are configured in the energy dissipation receiving device to form a multi-level energy dissipation. The stiffness of each elastic element gradually increases from the outside to the inside along the direction of the kinetic energy of the rotating beam.

3. The method for precise positioning of a swing bridge according to claim 1, characterized in that: The energy dissipation method of the energy dissipation receiving device includes sliding, that is, a sliding component is configured in the energy dissipation receiving device, and the sliding component slides to dissipate energy when receiving the kinetic energy of the rotating beam.

4. The method for precise positioning of a swing bridge according to claim 1, characterized in that: Energy-dissipating elastic elements are provided in the energy-dissipating receiving device and the reaction force support.

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