Three-way deviation rectifying device capable of being used for large-longitudinal-slope and small-radius bridge cantilever construction

Abstract

The utility model belongs to the technical field of bridge construction, and provides a three-way deviation rectifying device capable of being used for large longitudinal slope and small radius bridge cantilever construction, which comprises a small radius bridge cantilever construction deviation rectifying frame and a large longitudinal slope bridge cantilever construction deviation rectifying frame, the small-radius bridge cantilever construction deviation rectifying frame is composed of a deviation rectifying control integrator, a laser measurer and a pushing jack and provides transverse deviation rectifying acting force. The large longitudinal slope bridge cantilever construction deviation rectifying frame is composed of a deviation rectifying control integrator, a laser measurer and a hydraulic jack and provides longitudinal deviation rectifying acting force. Through the mutual cooperation of the reference point assembly, the measuring point assembly and the automatic reading assembly, the laser measurer is used for measuring the angle change condition of the measuring point at the top of the cantilever construction bridge box girder in the construction process, automatic measurement is achieved, manual operation is not needed, errors of manual measurement are reduced, and meanwhile the danger of manual measurement is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely is a three -dimensional deviation rectification device for the cantilever construction of large longitudinal slope, small radius bridge. BACKGROUND

[0002] In the bridge construction process, construction process simulation analysis, deformation monitoring and error identification and prediction are generally carried out, the stress performance in the bridge construction process is monitored to ensure that the bridge construction process and the completed bridge structure after construction meet the design requirements of the stress state and linear requirements; by monitoring the stress and structural deformation of the bridge section concrete in the construction process, the bridge construction state is continuously optimized and adjusted to ensure the smooth bridge construction; the cantilever hanging basket technology construction refers to the use of the hanging basket method to carry out relatively simple cantilever operation construction when pouring a large span bridge, which is safe, does not need to use large cranes and does not need to erect additional supports, can greatly reduce the impact on the environment and improve the construction efficiency; full back hanging basket technology is often used when crossing rivers and lakes; the hanging basket is a freely movable support that can be set on the bridge position, and in the whole construction process, the cantilever hanging basket technology is used for concrete pouring to finally complete the bridge construction; in the construction process, the construction unit needs to design the applicable hanging basket according to the cantilever construction process and design drawing requirements, and comprehensively design various processes to speed up the project progress and achieve the effect of saving cost.

[0003] In recent years, China's bridge engineering has developed rapidly, and the cantilever hanging basket technology, as one of the commonly used technologies in bridge engineering, is mainly applied to the pouring of bridge superstructure and has the characteristics of flexible construction, fast efficiency and high safety; through segmented construction, the hanging basket can be freely operated; however, in actual operation, it may be affected by some factors, therefore, it is of great significance to develop a deviation rectification system for large longitudinal slope and small radius bridge cantilever construction to better utilize the cantilever hanging basket technology, strengthen quality control, make it play a greater application value and improve the level of modernization.

[0004] The cantilever construction method is the main construction method of prestressed concrete continuous beam bridges and continuous rigid frames, for prestressed concrete continuous beam bridges and continuous rigid frames, although the cantilever construction method has many advantages, the formation of such bridges needs to go through a complex process, when the number of spans increases and the span is large, in order to ensure that the deviation of the vertical deflection of the two cantilever ends before closure does not exceed the allowable range and the line shape after the bridge is formed is reasonable, the construction process of such bridges needs to be controlled.

[0005] In the specific construction, each link will affect the overall quality of the bridge engineering, and the quality control strength should be increased in different stages. Only the quality of each link is ensured, can the construction activities be smoothly promoted. Although the cantilever hanging basket technology is very common in bridge construction, it also has certain risks. The construction control is a cycle process of construction, measurement, identification, early warning, correction and construction, which makes the construction advance according to the predetermined design linear.

[0006] In the bridge construction, the cantilever hanging basket construction of the bridge is applied more and more. In the cantilever hanging basket construction process, the beam axis and the space size are in a state of continuous change, and the frictional resistance between the steel beam and the slide is also continuously changing. Therefore, in the actual construction process, the angle deviation of the steel beam occurs. If it is not controlled, not only the bridge cannot reach the design state after the construction is completed, but also the construction operation cannot be smoothly carried out. Lightly, the construction period is delayed, the construction cost is increased, and seriously, the structure safety is endangered, and personnel casualties are caused. Therefore, it is necessary to control the angle deviation of the steel beam in the construction.

[0007] Therefore, the core task of the construction control of the bridge is to analyze, identify and adjust various errors, and to predict the future state of the structure. When the cantilever hanging basket technology is used, after the cantilever hanging basket mechanical equipment is installed, the application of each aspect should be detected. The installation and design should be consistent, so that the initial construction goal can be achieved, and the construction safety can be ensured. However, the construction measurement method of the large longitudinal slope and small radius bridge is high in cost, and the measurement personnel is dangerous. The measurement error is difficult to control, and the measurement precision is difficult to guarantee. Therefore, in order to solve the above problems, the utility model provides a three-way correction device for large longitudinal slope and small radius bridge cantilever construction. Utility model content

[0008] The utility model aims at providing a three-way correction device for large longitudinal slope and small radius bridge cantilever construction, so as to solve the problems in the above background art.

[0009] In order to achieve the above object, the utility model provides the following technical scheme: a three-way correction device for large longitudinal slope and small radius bridge cantilever construction, comprising a small radius bridge cantilever construction correction frame and a large longitudinal slope bridge cantilever construction correction frame.

[0010] The small radius bridge cantilever construction correction frame is composed of a correction control integrator, a laser measurer and a pushing jack, and provides a lateral correction force. The large longitudinal slope bridge cantilever construction correction frame is composed of a correction control integrator, a laser measurer and a hydraulic jack, and provides a longitudinal correction force.

[0011] The deviation rectifying control integrator is arranged at the curve center of the large longitudinal slope and small radius bridge cantilever construction, and the bottom of the deviation rectifying control integrator is provided with a support platform, and the bottom of the support platform is provided with a support rod;

[0012] The small radius bridge cantilever construction deviation rectifying frame and the large longitudinal slope bridge cantilever construction deviation rectifying frame are arranged on the construction bridge pier, and the small radius bridge cantilever construction deviation rectifying frame and the large longitudinal slope bridge cantilever construction deviation rectifying frame are directly installed with the beam body, the pushing jack is installed on the left and right sides of the beam body, and the hydraulic jack is installed at the bottom of the beam body; the beam body comprises a reference box girder and a to-be-tested box girder.

[0013] The hanging basket is arranged on the to-be-tested box girder, and the front end of the hanging basket suspends the front end of the to-be-tested box girder; the top of the reference box girder and the to-be-tested box girder is provided with three equipment walking tracks, and the equipment walking tracks at the joint of the reference box girder and the to-be-tested box girder are movably connected; the top of the reference box girder and the to-be-tested box girder is provided with a laser measuring device, and the laser measuring device comprises a laser receiver and a laser emitter.

[0014] Preferably, the bottom outer side of the beam body is wrapped with a counterforce support frame, the counterforce support frame is composed of a horizontal base plate and a vertical base plate, and the pushing jack and the hydraulic jack are arranged on the inner side of the counterforce support frame.

[0015] Preferably, the reference box girder is fixed on the construction bridge pier, and a steel plate is arranged between the reference box girder and the construction bridge pier; the small radius bridge cantilever construction deviation rectifying frame and the large longitudinal slope bridge cantilever construction deviation rectifying frame are arranged on the to-be-tested box girder.

[0016] Preferably, a data processing system end and an electrical box are arranged in the deviation rectifying control integrator and are interconnected with the laser measuring device, the pushing jack and the hydraulic jack.

[0017] Preferably, the bottom of the laser measuring device is slidably installed on the equipment walking track, and the laser measuring device is located on the central axis of the equipment walking track.

[0018] Preferably, the top end of the to-be-tested box girder is provided with a laser receiver, the top of the reference box girder is provided with a laser emitter in the middle and on the left and right sides, and the three laser emitters correspond to the laser receiver in front.

[0019] Preferably, the bottom of the laser measuring device is provided with a collecting box, the collecting box is slidably installed on the equipment walking track, the bottom of the collecting box is provided with a cleaning wheel, the collecting box and the cleaning wheel clean the track surface of the equipment walking track, and the cleaning wheel is a rubber wheel.

[0020] Compared with the prior art, the deviation rectifying control integrator has the advantages that:

[0021] 1) The utility model discloses a benchmark point assembly, measuring point assembly and the mutual cooperation of automatic reading assembly, uses laser measuring ware to measure the angle change condition of the top measuring point of cantilever construction bridge box girder in the construction process, realizes automatic measurement, does not need manual operation, reduces the error of manual measurement, and danger of manual measurement is avoided simultaneously;

[0022] 2) The surface mounting cleaning device of laser measuring ware is set up, the upper end side wall of the track for the equipment walking is contacted first by the cleaning wheel in the cleaning device, and then the impurities on the surface of the upper end side wall of the track are adhered and cleaned, and the impurities on the surface are thrown back under the centrifugal force of the cleaning wheel when advancing and are collected by the baffle and the collecting box, so that the measuring data is more accurate, and the laser measuring ware is convenient for running on the track surface;

[0023] 3) The laser emitter and laser receiver are used to measure the large longitudinal slope bridge, data is transmitted to the deviation rectification system, the deviation rectification system calculates the offset value by the measured value and curve radius, and the bridge deviation value is corrected by the hydraulic jack device, and the applicability is good;

[0024] 4) The cantilever construction bridge can be automatically monitored, manual measurement is not needed, the error of manual measurement is reduced, the danger of manual measurement is avoided, and the bridge construction safety is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the front structure schematic view of the utility model;

[0026] Figure 2 It is the side structure schematic view of the utility model;

[0027] Figure 3 It is the beam body plan view of the utility model;

[0028] Figure 4 It is the counterforce support frame and jack installation schematic view of the utility model;

[0029] Figure 5 It is the laser measuring ware collecting box schematic view of the utility model.

[0030] In the drawing: deviation rectification control integrator 1, supporting platform 2, laser measuring ware 3, pushing jack 4, vertical base plate 5, laser receiver 6, beam body 7, hydraulic jack 8, horizontal base plate 9, laser emitter 10, measured box girder 11, benchmark box girder 12, steel plate 13, equipment walking track 14, counterforce support frame 15, collecting box 16, cleaning wheel 17. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] Embodiment:

[0034] Please refer to Figures 1-5 The present application provides a three-way deviation rectification device for large longitudinal slope and small radius bridge cantilever construction, which comprises a small radius bridge cantilever construction deviation rectification frame and a large longitudinal slope bridge cantilever construction deviation rectification frame.

[0035] The small radius bridge cantilever construction deviation rectification frame is composed of a deviation rectification control integrator 1, a laser measuring device 3 and a pushing jack 4, and provides a transverse deviation rectification force.

[0036] The large longitudinal slope bridge cantilever construction deviation rectification frame is composed of a deviation rectification control integrator 1, a laser measuring device 3 and a hydraulic jack 8, and provides a longitudinal deviation rectification force.

[0037] The deviation rectification control integrator 1 is arranged at the curve center of the large longitudinal slope and small radius bridge cantilever construction; the bottom of the deviation rectification control integrator 1 is provided with a support platform 2, the bottom of the support platform 2 is provided with a support rod, and the support rod is arranged in close proximity to the installed beam body 7 of the deviation rectification control integrator 1.

[0038] The small radius bridge cantilever construction deviation rectification frame and the large longitudinal slope bridge cantilever construction deviation rectification frame are arranged on the construction pier, and the small radius bridge cantilever construction deviation rectification frame and the large longitudinal slope bridge cantilever construction deviation rectification frame are directly provided with the beam body 7, the pushing jack 4 is arranged on the left and right sides of the beam body 7, and the hydraulic jack 8 is arranged at the bottom of the beam body 7.

[0039] The bottom outer side of the beam body 7 is wrapped with a counterforce support frame 15, the counterforce support frame 15 is composed of a horizontal base plate 9 and a vertical base plate 5, and the pushing jack 4 and the hydraulic jack 8 are arranged on the inner side of the counterforce support frame 15.

[0040] The beam body 7 includes a reference box girder 12 and a box girder to be tested 11. The reference box girder 12 is fixed on the construction pier, and a steel plate 13 is provided between the reference box girder 12 and the construction pier.

[0041] Both the small-radius bridge cantilever construction correction frame and the large longitudinal slope bridge cantilever construction correction frame are set on the box girder 11 to be measured; a hanging basket is set on the box girder 11 to be measured, and the front end of the hanging basket suspends the front end of the box girder 11 to be measured.

[0042] Three equipment travel tracks 14 are provided on the top of the reference box girder 12 and the box girder to be tested 11, and the equipment travel tracks 14 at the connection between the reference box girder 12 and the box girder to be tested 11 are movably connected.

[0043] A laser measuring device 3 is installed on the top of the reference box girder 12 and the box girder to be tested 11. The laser measuring device 3 includes a laser receiver 6 and a laser emitter 10.

[0044] A laser receiver 6 is installed at the top center of the box girder 11 to be tested, and laser emitters 10 are installed at the top center and on both sides of the reference box girder 12. The three laser emitters 10 face forward and correspond to the laser receiver 6.

[0045] The bottom of each laser measuring device 3 is slidably mounted on the equipment travel track 14, and each laser measuring device 3 is located on the central axis of the equipment travel track 14.

[0046] The correction control integrator 1 is equipped with a data processing system terminal and an electrical box, and is interconnected with the laser measuring device 3, the jacking jack 4, and the hydraulic jack 8;

[0047] A collection box 16 is installed at the bottom of the laser measuring device 3. The collection box 16 is slidably installed on the equipment travel track 14. A cleaning wheel 17 is provided at the bottom of the collection box 16. The collection box 16 and the cleaning wheel 17 clean the track surface of the equipment travel track 14. The cleaning wheel 17 is a rubber wheel.

[0048] This scheme consists of a small-radius bridge cantilever construction correction frame and a large longitudinal slope bridge cantilever construction correction frame. The small-radius bridge cantilever construction correction frame is composed of a correction control integrator 1, a laser measuring device 3, and a jacking jack 4, which provides lateral correction force.

[0049] The correction frame for cantilever construction of bridges on steep longitudinal slopes consists of a correction control integrator 1, a laser measuring device 3, and a hydraulic jack 8, which provides longitudinal correction force.

[0050] The correction control integrator 1 is located on the support platform 2. It performs correction measurement on the beam 7 through the laser measuring device 3 distributed on the equipment travel track 14. The correction control integrator 1 calculates the offset value based on the offset angle and radius curve of the laser measuring device 3. The correction control integrator 1 is equipped with a correction system that automatically calculates the measurement data. The offset angle and radius curve are determined by the laser signals emitted by the laser receiver 6 and the laser transmitter 10 (this is existing technology and will not be described in detail here). The measured data are the relative position of the box girder 11 to be measured and the reference box girder 12, as well as the offset angle and radius curve of the box girder 11 to be measured based on the reference box girder 12.

[0051] The laser measuring device 3 obtains the bridge deck curvature and large slope α, and the curve radii R1 and R2 of small radius bridges based on the basic dimensions of the bridge. It also obtains αR1 and αR2 based on the curvature calculation formula. The correction system compares the measured data with the calculated values. If there is a deviation, it uses the jacking jack 4 and hydraulic jack 8 to correct the bridge deviation.

[0052] The vertical substrates 5 at both ends of the horizontal substrate 9 are made of high-strength steel, which can increase the strength and rigidity of the reaction support frame 15 during use.

[0053] The reaction support frame 15 is fixed to the front end of the hanging basket. The hanging basket slides on the traveling track 14 and is limited and fixed after moving to the installation position. The reaction support frame 15 is provided with two parts, inner and outer. The inner reaction support frame 15 is a concave base. The hydraulic jack 8 is set on the concave base to adjust the longitudinal support of the box girder 11 to be measured. The jacking jack 4 is set on the inner side of the outer reaction support frame 15 and pushes and adjusts the inner concave base.

[0054] Both hydraulic jack 8 and jacking jack 4 are remotely connected to the correction control integrator 1 and automatically correct their deviations after calculation by the correction system.

[0055] A collection box 16 is provided at the bottom of the laser measuring device 3. A cleaning wheel 17 is provided at the bottom of the collection box 16. The cleaning wheel 17 is a rubber roller that is rolled on the equipment travel track 14. The collection box 16 has a dust suction function. The cleaning wheel 17 pushes or transfers dust, sand and other impurities to the collection box 16 for absorption and storage by pushing, sweeping and adhering. When moving on the equipment travel track 14, it can adsorb and clean the track to prevent impurities from affecting the balance of the laser measuring device 3 and interfering with the measurement data.

[0056] This three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii, which has a correction function, can be implemented in two stages:

[0057] Phase 1: When the small-radius bridge experiences angular deviation during cantilever construction, and the test box girder 11 and the reference box girder 12 are offset laterally, the correction system enters the working state. The data measured by the laser measuring device 3 is calculated and analyzed, and the jacking jack device 4 will push according to the offset value calculated by the correction system.

[0058] Second stage: When a longitudinal angle deviation occurs in the cantilever formwork construction of a bridge with a large longitudinal slope, the data measured by the laser transmitter 10 and the laser receiver 6 will be transmitted to the correction system. At this time, the correction system enters the working state, calculates and analyzes the measured data, and the hydraulic jack 8 corrects the deviation based on the calculated amount.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0060] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii, comprising a correction frame for cantilever construction of small-radius bridges and a correction frame for cantilever construction of bridges with large longitudinal slopes, characterized in that, The small-radius bridge cantilever construction correction frame consists of a correction control integrator (1), a laser measuring device (3), and a jacking jack (4), providing lateral correction force; the large longitudinal slope bridge cantilever construction correction frame consists of a correction control integrator (1), a laser measuring device (3), and a hydraulic jack (8), providing longitudinal correction force. The correction control integrator (1) is set at the center of the curve of the cantilever construction of a bridge with a large longitudinal slope and a small radius; a support platform (2) is set at the bottom of the correction control integrator (1), and a support rod is set at the bottom of the support platform (2). The small-radius bridge cantilever construction correction frame and the large-slope bridge cantilever construction correction frame are set on the construction piers, and the small-radius bridge cantilever construction correction frame and the large-slope bridge cantilever construction correction frame are directly installed on the beam (7). The jacking jack (4) is installed on the left and right sides of the beam (7), and the hydraulic jack (8) is installed at the bottom of the beam (7). The beam (7) includes a reference box girder (12) and a box girder to be tested (11). A hanging basket is provided on the box girder (11) to be tested, and the front end of the hanging basket suspends the front end of the box girder (11) to be tested; The top of the reference box girder (12) and the box girder to be tested (11) are provided with three equipment walking tracks (14), and the equipment walking tracks (14) at the junction of the reference box girder (12) and the box girder to be tested (11) are movably connected; the top of the reference box girder (12) and the box girder to be tested (11) are provided with a laser measuring device (3), and the laser measuring device (3) includes a laser receiver (6) and a laser emitter (10).

2. The three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: The bottom outer side of the beam (7) is wrapped with a reaction support frame (15), which is composed of a horizontal base plate (9) and a vertical base plate (5), and the jacking jack (4) and the hydraulic jack (8) are both located inside the reaction support frame (15).

3. The three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: The reference box girder (12) is fixed on the construction pier, and a steel plate (13) is set between the reference box girder (12) and the construction pier; the small radius bridge cantilever construction correction frame and the large longitudinal slope bridge cantilever construction correction frame are both set on the box girder (11) to be tested.

4. The three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: The correction control integrator (1) is equipped with a data processing system terminal and an electrical box, and is interactively connected with the laser measuring device (3), the jacking jack (4), and the hydraulic jack (8).

5. A three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: The bottom of each laser measuring device (3) is slidably mounted on the equipment travel track (14), and each laser measuring device (3) is located on the central axis of the equipment travel track (14).

6. The three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: A laser receiver (6) is installed at the top center of the box girder to be tested (11), and laser emitters (10) are installed at the top center and on the left and right sides of the reference box girder (12). The three laser emitters (10) face forward and correspond to the laser receiver (6).

7. A three-dimensional correction device for cantilever construction of bridges with large longitudinal slopes and small radii as described in claim 1, characterized in that: Each laser measuring device (3) is equipped with a collection box (16) at its bottom. The collection box (16) is slidably installed on the equipment walking track (14). The bottom of the collection box (16) is provided with a cleaning wheel (17). The collection box (16) and the cleaning wheel (17) clean the track surface of the equipment walking track (14). The cleaning wheel (17) is a rubber wheel.

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