Positioning and Surveying Method and Device for Segment-by-Segment Splicing Construction of Bridge Steel Cable Towers

Abstract

The present invention relates to the technical field of bridge construction, and in particular to a positioning and surveying method and device for segmental splicing construction of a bridge steel cable tower, including a test vehicle, a driving vehicle, a laser rangefinder, a spirit level and a rope. The test vehicles are rigidly connected to each other, the test vehicle is rigidly connected to the driving vehicle, the driving vehicles are connected by a rope, and the test vehicle and the driving vehicle are surrounded outside the steel cable tower through the above connections. The spirit level is arranged on the top surface of the test vehicle, and the laser rangefinder is arranged on the side surface and the bottom surface of the test vehicle. The technical effect of the present invention is that during the segmental splicing construction of the steel cable tower, the device monitors the position of the steel cable tower segment to ensure the construction accuracy of the hoisting and splicing of the steel cable tower segment. This method is simple to operate, has a good use effect, avoids manual high-altitude operations, and can be widely applied in the actual construction process of the bridge steel cable tower.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a positioning and surveying method and device for segmental splicing construction of a bridge steel cable tower. Background Art

[0002] The cable tower is a key load-bearing structure for supporting cables in suspension bridges and cable-stayed bridges. The cable tower consists of a tower base, tower columns, cross beams, and a tower crown. The common construction process of the cable tower is to first fabricate and process the steel cable tower segments in a mechanical workshop, then transport the steel cable tower segments to the bridge site for hoisting and splicing, and then pour concrete after the splicing of the steel cable tower segments is completed. In order to meet the landscape and design requirements, the cable tower has various shapes, including vertical single-column type, vertical double-column type, arch type, etc. During the hoisting process of the steel cable tower segments, once the positions of the steel cable tower segments deviate, the overall design line type and shape of the cable tower will be changed, seriously affecting the stress of the cable tower and the reliability of the bridge. Therefore, the precise positioning of the steel cable tower segments is one of the key processes for the cable tower to meet the stress requirements.

[0003] Currently, various surveying and setting control networks are arranged during the hoisting process of the steel cable tower segments to ensure the accurate positioning of the steel cable tower segments. However, determining the positions of the steel cable tower segments by arranging surveying and setting control networks requires a large amount of manual measurement data, and the measurement process is complex and easily affected by the construction environment. Summary of the Invention

[0004] The present invention aims to at least improve one of the technical problems existing in the prior art. For this purpose, the present invention proposes a positioning and surveying method and device for segmental splicing construction of a bridge steel cable tower.

[0005] According to the positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to the first aspect embodiment of the present invention, it includes:

[0006] Step S100, building a positioning and surveying scene for segmental splicing construction of a bridge steel cable tower, respectively marking the test vehicles on the inner side of the bridge steel cable tower segments in the scene as test vehicle A and test vehicle B, and recording the position data of the laser rangefinders in test vehicle A and test vehicle B respectively, specifically including recording the distances from the respective first laser rangefinders on test vehicle A and test vehicle B to the bottom surface of the test vehicle as L A1 and L B1 ; recording the distances from the respective second laser rangefinders on test vehicle A and test vehicle B to the side surface of the test vehicle as L A2 and L B2 ; recording the distances from the respective first laser rangefinders on test vehicle A and test vehicle B to the inner side surface of the cable tower segment as L A3 and LB3 ;

[0007] Step S200, record that the included angle between the connection line between the first laser rangefinder and the second laser rangefinder on the test vehicle A and the bottom surface of the test vehicle A is , and record that the included angle between the connection line between the first laser rangefinder and the second laser rangefinder on the test vehicle B and the bottom surface of the test vehicle B is ;

[0008] Step S300, when installing each segment of the cable tower segment, the driving vehicle in the scene drives the test vehicle A and the test vehicle B to the preset position of the cable tower segment for positioning and surveying. Use the first laser rangefinder and the second laser rangefinder of the test vehicle A to measure the elevation of the cable tower segment respectively and record the measurement data H A1 and H A2 , and calculate the inclination angle of the test vehicle A in the transverse direction of the bridge ; Use the first laser rangefinder and the second laser rangefinder of the test vehicle B to measure the elevation of the cable tower segment respectively and record the measurement data H B1 and H B2 , and calculate the inclination angle of the test vehicle B in the transverse direction of the bridge ;

[0009] Step S400, calculate the elevations of the test vehicle A and the test vehicle B when they drive to the preset position of the cable tower segment H A and H B；

[0010] Step S500, compare the calculated elevations and with the theoretical design values of the elevations at the preset positions of the cable tower segments respectively, and determine whether it is necessary to adjust the elevations of the cable tower segments according to the comparison and analysis results;

[0011] Step S600, compare the inclination angles of the test vehicle A and the test vehicle B in the transverse direction of the bridge and with the theoretical design values of the transverse bridge inclination angles of the cable tower segments, and determine whether it is necessary to adjust the transverse bridge inclination angles of the cable tower segments according to the comparison and analysis results;

[0012] Step S700, determine whether the cable tower segment is inclined in the longitudinal direction of the bridge according to whether the test vehicle A and the test vehicle B are horizontal in the longitudinal direction of the bridge;

[0013] Step S800, complete the positioning and surveying process of the segmented splicing construction of the bridge cable tower.

[0014] According to the positioning and surveying method for the segmented splicing construction of a bridge steel cable tower according to an embodiment of the present invention, it is possible to respectively monitor the elevation, transverse bridge inclination angle, and longitudinal bridge inclination angle of the steel cable tower segments, effectively measure and determine the elevation and inclination angles of each segment of the steel cable tower, avoid high-altitude operations of workers, and ensure the safety of workers. It is simple to operate, has good use effects, and is safe enough, and can be widely applied during the construction process.

[0015] In a possible implementation manner of the first aspect, the specific steps for setting up the positioning and surveying scenario for the segmented splicing construction of the bridge steel cable tower in step S100 include: two test vehicles, several driving vehicles, ropes, and rigid connecting rods surrounding the side of the bridge steel cable tower segment. Among them, the test vehicles are connected by rigid connecting rods, the test vehicles and the driving vehicles are connected by rigid connecting rods, and the driving vehicles are connected by ropes. A spirit level is provided on the upper surface of the test vehicle, a first laser rangefinder is provided on the side of the test vehicle far from the side of the bridge steel cable tower segment, and a second laser rangefinder is provided on the bottom surface of the test vehicle far from the spirit level.

[0016] In a possible implementation manner of the first aspect, in step S200, record the angle between the line connecting the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A as :

[0017] ,

[0018] wherein, L A1 is the distance from the first laser rangefinder on test vehicle A to the bottom surface of test vehicle A, L A2 is the distance from the second laser rangefinder on test vehicle A to the side surface of test vehicle A;

[0019] Record the angle between the line connecting the first laser rangefinder and the second laser rangefinder on test vehicle B and the bottom surface of test vehicle B as :

[0020] ,

[0021] wherein, L B1 is the distance from the first laser rangefinder on test vehicle B to the bottom surface of test vehicle B, L B2 is the distance from the second laser rangefinder on test vehicle B to the side surface of test vehicle B.

[0022] In a possible implementation manner of the first aspect, the preset position of the steel cable tower segment in step S300 is that the driving vehicle drives the test vehicle to the position of the center line marking of the segmented section of the steel cable tower, which is convenient for calculating the inclination angle of the test vehicle in the transverse direction along the bridge.

[0023] In a possible implementation of the first aspect, the specific steps in step S300 include:

[0024] Perform elevation measurements on the steel cable tower segments vertically downward using the first laser rangefinder and the second laser rangefinder on test vehicle A respectively. The elevation measurement data of the two laser rangefinders are H A1 and H A2 . Calculate the inclination angle of test vehicle A in the transverse direction of the bridge through the following formula :

[0025] ,

[0026] ;

[0027] where L A1 is the distance from the first laser rangefinder on test vehicle A to the bottom surface of test vehicle A, L A2 is the distance from the second laser rangefinder on test vehicle A to the side surface of test vehicle A, is the angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A;

[0028] Perform elevation measurements on the steel cable tower segments vertically downward using the first laser rangefinder and the second laser rangefinder on test vehicle B respectively. The elevation measurement data of the two laser rangefinders are H B1 and H B2 . Calculate the inclination angle of test vehicle B in the transverse direction of the bridge through the following formula :

[0029] ,

[0030] ;

[0031] where L B1 is the distance from the first laser rangefinder on test vehicle B to the bottom surface of test vehicle B, L B2 is the distance from the second laser rangefinder on test vehicle B to the side surface of test vehicle B, is the angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A.

[0032] In a possible implementation of the first aspect, the specific steps in step S400 include:

[0033] According to the elevation data of the cable-stayed tower segment measured by the first laser rangefinder on test vehicle A H A1 and the distance from the first laser rangefinder on test vehicle A to the inner side surface of the cable-stayed tower segment L A3 , the elevation of the preset position of the cable-stayed tower segment is calculated H A :

[0034] ;

[0035] According to the elevation data of the cable-stayed tower segment measured by the first laser rangefinder on test vehicle B H B1 and the distance from the first laser rangefinder on test vehicle A to the inner side surface of the cable-stayed tower segment L B3 , the elevation of the preset position of the cable-stayed tower segment is calculated H B :

[0036] .

[0037] The positioning and surveying device for the segmented splicing construction of the bridge cable-stayed tower according to the second aspect embodiment of the present invention is used to implement the above surveying method, and includes:

[0038] Test vehicle A, test vehicle B, several driving vehicles, ropes and rigid connecting rods surrounding the side surface of the bridge cable-stayed tower segment, wherein test vehicle A and test vehicle B are connected by a rigid connecting rod, test vehicle A and the driving vehicle are connected by a rigid connecting rod, and the driving vehicles are connected by ropes. The upper surfaces of test vehicle A and test vehicle B are both provided with spirit levels to ensure that the test vehicles are kept horizontal along the longitudinal direction of the bridge. The first laser rangefinders are arranged on the side surfaces of test vehicle A and test vehicle B far away from the side surface of the bridge cable-stayed tower segment, and the second laser rangefinders are arranged on the bottom surfaces of test vehicle A and test vehicle B far away from the spirit levels.

[0039] In a possible implementation manner of the second aspect, the first laser rangefinder and test vehicle A are hinged through a bracket;

[0040] The first laser rangefinder and test vehicle B are hinged through a bracket, which is convenient for flexibly adjusting the position of the laser rangefinder so that the laser emitted by the laser rangefinder remains in the vertical direction and is used to measure the height of the side and bottom surfaces of the test vehicle from the bridge deck.

[0041] In a possible implementation manner of the second aspect, the second laser rangefinder and test vehicle A are hinged through a bracket;

[0042] The second laser rangefinder and the test vehicle B are hinged by a bracket, which facilitates flexible adjustment of the position of the laser rangefinder, so that the laser emitted by the laser rangefinder remains in the vertical direction, and is used to measure the height of the side and bottom of the test vehicle from the bridge deck.

[0043] In a possible implementation manner of the second aspect, a rope retracting device is provided inside the driving vehicle. The rope retracting device includes a motor and a wire winding roller. A rope is sleeved on the wire winding roller. The driving vehicle is remotely controlled by ground personnel. The driving vehicle can provide power to make the entire test device climb and rise along the steel cable tower, and the motor is used to drive the wire winding roller to realize the telescopic retraction and release of the rope, so as to ensure that the positioning and surveying device has sufficient friction during the climbing process.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0046] Figure 1 is a flowchart of a positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to an embodiment of the present invention;

[0047] Figure 2 is a schematic diagram of position data acquisition of the laser rangefinder of the test vehicle A in the positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to an embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of positioning and surveying for segmental splicing construction of a bridge steel cable tower according to an embodiment of the present invention;

[0049] Figure 4 is a schematic structural diagram of a positioning and surveying device for segmental splicing construction of a bridge steel cable tower according to an embodiment of the present invention;

[0050] Figure 5 is a schematic structural diagram of the positioning and surveying device for segmental splicing construction of a bridge steel cable tower from another perspective according to an embodiment of the present invention;

[0051] Figure 6 is an operation schematic diagram of the positioning and surveying device for segmental splicing construction of a bridge steel cable tower on an arched cable tower according to an embodiment of the present invention.

[0052] Reference Signs:

[0053] Bridge steel cable tower segment 100;

[0054] Test vehicle A 11, test vehicle B 12, first laser rangefinder 13, second laser rangefinder 14, driving vehicle 2, rigid connecting rod 3, rope 4, spirit level 5. Specific embodiments

[0055] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] The terms "first", "second", "third", etc. in the description and claims of the present application and the accompanying drawings are used to distinguish different objects and are not used to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a series of steps or units are included, or optionally, steps or units not listed are also included, or optionally, other steps or units inherent in these processes, methods, products or devices are also included.

[0059] Only parts related to the present application are shown in the drawings, not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of the operations can be performed in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operations are completed, but there can also be additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0060] As used in this specification, terms such as "component", "module", "system", "unit", etc. are used to represent computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media storing various data structures. A unit can communicate, for example, through local and / or remote processes according to a signal having one or more data packets (e.g., data from a second unit interacting with another unit between a local system, a distributed system, and / or a network. For example, the Internet interacting with other systems through a signal).

[0061] Embodiment 1

[0062] Refer to Figures 1 to 3 As shown, this embodiment provides a positioning and surveying method for the segmented splicing construction of a bridge steel cable tower. Taking the specific positioning and surveying of the arch-shaped steel cable tower segment as an example, it includes:

[0063] Step S100, set up the positioning and surveying scenario for the segmented splicing construction of the bridge steel cable tower. Mark the two test vehicles on the inner side of the bridge steel cable tower segment in the scenario as test vehicle A and test vehicle B respectively, and record the position data of the respective laser rangefinders in test vehicle A and test vehicle B. Specifically, it includes recording the distances from the respective first laser rangefinders on test vehicle A and test vehicle B to the bottom surface of the test vehicle as L A1 and L B1 respectively; recording the distances from the respective second laser rangefinders on test vehicle A and test vehicle B to the side surface of the test vehicle as L A2 and L B2 respectively; recording the distances from the respective first laser rangefinders on test vehicle A and test vehicle B to the inner side surface of the cable tower segment as L A3 and L B3 respectively;

[0064] Step S200, record the angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A as , and record the angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle B and the bottom surface of test vehicle B as ;

[0065] Step S300: When each segment of the cable tower is installed, the driving vehicle in the scene drives the test vehicle A and the test vehicle B to the preset position of the cable tower segment for positioning survey. The first laser rangefinder and the second laser rangefinder of the test vehicle A are used to measure the elevation of the cable tower segment respectively and record the measurement data. H A1 and H A2 , calculate the inclination angle of the test vehicle A in the transverse direction of the bridge. ; Use the first laser rangefinder and the second laser rangefinder of the test vehicle B to measure the elevation of the cable tower segment respectively and record the measurement data. H B1 and H B2 , calculate the inclination angle of the test vehicle B in the transverse direction of the bridge. ;

[0066] Step S400: Calculate the elevations of the test vehicle A and the test vehicle B when they drive to the preset position of the cable tower segment. H A and H B ;

[0067] Step S500: Compare the calculated elevations H A and H B with the theoretical design values of the elevation of the preset position of the cable tower segment respectively. According to the comparison and analysis results, determine whether it is necessary to adjust the elevation of the cable tower segment. Specifically, if the error between the actual position coordinates and the theoretical position coordinates is less than the preset error limit, it indicates that the accuracy requirement is met; otherwise, the elevation of the cable tower segment needs to be adjusted. The theoretical design value of the elevation of the preset position of the cable tower segment is based on the requirements of the design drawings, and the theoretical values at any position can be obtained on the designed software model.

[0068] Step S600: Compare the inclination angles and of the test vehicle A and the test vehicle B in the transverse direction of the bridge with the theoretical design values of the transverse bridge inclination angle of the cable tower segment. According to the comparison and analysis results, determine whether it is necessary to adjust the transverse bridge inclination angle of the cable tower segment. Specifically, if the error between the actual position coordinates and the theoretical position coordinates is less than the preset error limit, it indicates that the accuracy requirement is met; otherwise, the transverse bridge inclination angle of the cable tower segment needs to be adjusted. The theoretical design value of the elevation of the preset position of the cable tower segment is based on the requirements of the design drawings, and the theoretical values at any position can be obtained on the designed software model.

[0069] Step S700: According to whether the test vehicle A and the test vehicle B are horizontal along the longitudinal direction of the bridge, it can be determined whether the cable tower segment is inclined along the longitudinal direction of the bridge. In this step, since there is a rigid connection between the two test vehicles and a spirit level is arranged on the top surfaces of the two test vehicles, therefore, according to whether the test vehicle A and the test vehicle B are horizontal along the longitudinal direction of the bridge, it can be determined whether the cable tower segment is inclined along the longitudinal direction of the bridge;

[0070] Step S800: Complete the positioning and surveying process for the segmented splicing construction of the bridge cable tower.

[0071] According to the positioning and surveying method for the segmented splicing construction of the bridge cable tower according to the embodiment of the present invention, the elevation, the transverse inclination angle, and the longitudinal inclination angle of the cable tower segment can be respectively monitored, effectively measuring and determining the elevation and inclination angles of each segment of the cable tower, avoiding high-altitude operations of workers, and ensuring the safety of workers. It is simple to operate, has a good use effect, and is safe enough, and can be widely applied during the construction process.

[0072] It should be noted that the specific process of setting up the positioning and surveying scenario for the segmented splicing construction of the bridge cable tower in step S100 includes: two test vehicles surrounding the side of the bridge cable tower segment, several driving vehicles, ropes, and rigid connecting rods. Among them, the test vehicles are connected by rigid connecting rods, the test vehicle and the driving vehicle are connected by rigid connecting rods, the driving vehicles are connected by ropes, a spirit level is arranged on the upper surface of the test vehicle, a first laser rangefinder is arranged on the side of the test vehicle far from the side of the bridge cable tower segment, and a second laser rangefinder is arranged on the bottom surface of the test vehicle far from the spirit level.

[0073] It should be noted that in step S200, record the included angle between the connection line between the first laser rangefinder and the second laser rangefinder on the test vehicle A and the bottom surface of the test vehicle A as :

[0074] ,

[0075] wherein, L A1 is the distance from the first laser rangefinder on the test vehicle A to the bottom surface of the test vehicle A, L A2 is the distance from the second laser rangefinder on the test vehicle A to the side surface of the test vehicle A;

[0076] Record the included angle between the connection line between the first laser rangefinder and the second laser rangefinder on the test vehicle B and the bottom surface of the test vehicle B as :

[0077] ,

[0078] wherein, LB1 To measure the distance from the first laser rangefinder on test vehicle B to the bottom surface of test vehicle B, L B2 To measure the distance from the second laser rangefinder on test vehicle B to the side surface of test vehicle B.

[0079] It should be noted that the preset position of the cable tower segment in step S300 is the position of the center line marking of the cable tower segment where the driving vehicle drives the test vehicle to, which is convenient for calculating the inclination angle of the test vehicle in the transverse direction of the bridge.

[0080] It should be noted that step S300 specifically includes:

[0081] Vertically measure the elevation of the cable tower segment with the first laser rangefinder and the second laser rangefinder on test vehicle A respectively, and record the elevation measurement data of the cable tower segment as H A1 and H A2 , and calculate the inclination angle of test vehicle A in the transverse direction of the bridge through the following formula :

[0082] ,

[0083] ;

[0084] Wherein, L A1 is the distance from the first laser rangefinder on test vehicle A to the bottom surface of test vehicle A, L A2 is the distance from the second laser rangefinder on test vehicle A to the side surface of test vehicle A, is the angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A;

[0085] Vertically measure the elevation of the cable tower segment with the first laser rangefinder and the second laser rangefinder on test vehicle B respectively, and record the elevation measurement data of the cable tower segment as H B1 and H B2 , and calculate the inclination angle of test vehicle B in the transverse direction of the bridge through the following formula :

[0086] ,

[0087] ;

[0088] Wherein, L B1 is the distance from the first laser rangefinder on test vehicle B to the bottom surface of test vehicle B,L B2 To measure the distance from the second laser rangefinder on test vehicle B to the side of test vehicle B The included angle between the connection line between the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A

[0089] It should be noted that the specific steps in step S400 include:

[0090] According to the elevation data of the cable-stayed tower segment measured by the first laser rangefinder on test vehicle A H A1 And the distance from the first laser rangefinder on test vehicle A to the inner side of the cable-stayed tower segment L A3 Calculate the elevation of the preset position of the cable-stayed tower segment H A :

[0091] ;

[0092] According to the elevation data of the cable-stayed tower segment measured by the first laser rangefinder on test vehicle B H B1 And the distance from the first laser rangefinder on test vehicle A to the inner side of the cable-stayed tower segment L B3 Calculate the elevation of the preset position of the cable-stayed tower segment H B :

[0093] 。

[0094] Embodiment 2

[0095] Refer to Figures 4 to 6 As shown, this embodiment provides a positioning and surveying device for the segmented splicing construction of a bridge cable-stayed tower, which is used to implement the above surveying method. Among them, it includes:

[0096] Test vehicle A11, test vehicle B12, several driving vehicles 2, a rope 4 and a rigid connecting rod 3 surrounding the side of the bridge cable-stayed tower segment 100. Among them, test vehicle A11 and test vehicle B12 are connected by a rigid connecting rod 3, test vehicle A11 and driving vehicle 2 are connected by a rigid connecting rod 3, and driving vehicles 2 are connected by a rope 4. The upper surfaces of test vehicle A11 and test vehicle B12 are both provided with a spirit level 5 to ensure that the test vehicle remains horizontal along the longitudinal direction of the bridge. The sides of test vehicle A11 and test vehicle B12 away from the side of the bridge cable-stayed tower segment 100 are provided with a first laser rangefinder 13, and the bottom surfaces of test vehicle A11 and test vehicle B12 away from the spirit level 5 are both provided with a second laser rangefinder 14.

[0097] It should be noted that the first laser rangefinder 13 and the test vehicle A11 are hinged by a bracket;

[0098] The first laser rangefinder 13 and the test vehicle B12 are hinged by a bracket, which is convenient for flexibly adjusting the position of the laser rangefinder, so that the laser emitted by the laser rangefinder remains in the vertical direction, and is used to measure the height of the side and bottom of the test vehicle from the bridge deck.

[0099] It should be noted that the second laser rangefinder 14 and the test vehicle A11 are hinged by a bracket;

[0100] The second laser rangefinder 14 and the test vehicle B12 are hinged by a bracket, which is convenient for flexibly adjusting the position of the laser rangefinder, so that the laser emitted by the laser rangefinder remains in the vertical direction, and is used to measure the height of the side and bottom of the test vehicle from the bridge deck.

[0101] It should be noted that a rope retracting device is provided in the driving vehicle 2. The rope retracting device includes a motor and a wire winding roller. A rope 4 is sleeved on the wire winding roller. The driving vehicle 2 is remotely controlled by ground personnel. The driving vehicle 2 can provide power to make the entire test device climb and rise along the steel cable tower, and the motor is used to drive the wire winding roller to realize the telescopic retraction and release of the rope 4, ensuring that the positioning and surveying device has sufficient friction during the climbing process.

[0102] It should be noted that a camera is provided directly above the spirit level 5. The camera is connected to an external central control monitoring system and is used to observe whether the spirit level is in a balanced state.

[0103] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0104] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0105] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. The mention of "embodiment" in this text means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0106] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A positioning and surveying method for segmental splicing construction of a bridge steel cable tower, characterized in that Including: Step S100, set up the positioning and surveying scenario for the segmented splicing construction of the bridge cable tower, specifically including two test vehicles, several driving vehicles, ropes, and rigid connecting rods surrounding the side of the bridge cable tower segment. The test vehicles are connected by rigid connecting rods, the test vehicle and the driving vehicle are connected by rigid connecting rods, and the driving vehicles are connected by ropes. A spirit level is provided on the upper surface of the test vehicle. A first laser rangefinder is provided on the side of the test vehicle far from the side of the bridge cable tower segment, and a second laser rangefinder is provided on the bottom surface of the test vehicle far from the spirit level. The test vehicles on the inner side of the bridge cable tower segment in the scenario are respectively marked as test vehicle A and test vehicle B, and record the position data of the laser rangefinders in test vehicle A and test vehicle B respectively, specifically including recording the distances from the first laser rangefinders on test vehicle A and test vehicle B to the bottom surface of the test vehicle as L A1 and L B1 ; recording the distances from the second laser rangefinders on test vehicle A and test vehicle B to the side of the test vehicle as L A2 and L B2 ; recording the distances from the first laser rangefinders on test vehicle A and test vehicle B to the inner side of the cable tower segment as L A3 and L B3 ; Step S200, record the angle between the line connecting the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A as , record the angle between the line connecting the first laser rangefinder and the second laser rangefinder on test vehicle B and the bottom surface of test vehicle B as ; Step S300: When each cable-stayed tower segment is installed, the driving vehicle in the scene drives the test vehicle A and the test vehicle B to the preset position of the cable-stayed tower segment for positioning survey. The first laser rangefinder and the second laser rangefinder of the test vehicle A are used to measure the elevation of the cable-stayed tower segment respectively, and the measurement data is recorded. H A1 and H A2 , and calculate the inclination angle of the test vehicle A in the transverse direction of the bridge. ; The first laser rangefinder and the second laser rangefinder of the test vehicle B are used to measure the elevation of the cable-stayed tower segment respectively, and the measurement data is recorded. H B1 and H B2 , and calculate the inclination angle of the test vehicle B in the transverse direction of the bridge. ; Step S400, calculate the elevations of test vehicle A and test vehicle B when they travel to the preset positions of the cable tower segments H A and H B ; Step S500, compare the calculated elevation H A and H B with the theoretical design values of the elevation at the preset positions of the cable tower segments respectively, and determine whether it is necessary to adjust the elevation of the cable tower segments according to the comparison and analysis results; Step S600, incline test vehicle A and test vehicle B along the transverse direction of the bridge and compare with the theoretical design value of the transverse inclination angle of the cable tower segment, and determine whether it is necessary to adjust the transverse inclination angle of the cable tower segment according to the comparison and analysis results; Step S700: Determine whether the cable tower segment is inclined in the longitudinal direction of the bridge according to whether the test vehicle A and the test vehicle B are horizontal in the longitudinal direction of the bridge. Step S800: Complete the positioning and surveying process of the segmented splicing construction of the bridge cable tower.

2. The positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to claim 1, characterized in that, In step S200, record the angle between the line connecting the first laser rangefinder and the second laser rangefinder on the test vehicle A and the bottom surface of the test vehicle A as : ， Among them, L A1 is the distance from the first laser rangefinder on the test vehicle A to the bottom surface of the test vehicle A, L A2 is the distance from the second laser rangefinder on the test vehicle A to the side surface of the test vehicle A; Record the included angle between the line connecting the first laser rangefinder and the second laser rangefinder on the test vehicle B and the bottom surface of the test vehicle B as : ， Wherein, L B1 is the distance from the first laser rangefinder on the test vehicle B to the bottom surface of the test vehicle B, L B2 is the distance from the second laser rangefinder on the test vehicle B to the side surface of the test vehicle B.

3. The positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to claim 1, characterized in that, In the step S300, the preset position of the cable tower segment is that the driving vehicle drives the test vehicle to the position of the center line marking of the cable tower segment.

4. The positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to claim 3, characterized in that, Specifically included in the step S300: The first laser rangefinder and the second laser rangefinder on the test vehicle A are respectively used to vertically measure the elevation of the cable tower segment downward, and the elevation measurement data of the two laser rangefinders are respectively H A1 and H A2 . The inclination angle of the test vehicle A in the transverse direction of the bridge is calculated through the following formula : ， ； Among them, L A1 is the distance from the first laser rangefinder on the test vehicle A to the bottom surface of the test vehicle A, L A2 is the distance from the second laser rangefinder on the test vehicle A to the side surface of the test vehicle A, is the angle between the line connecting the first laser rangefinder and the second laser rangefinder on the test vehicle A and the bottom surface of the test vehicle A; The first laser rangefinder and the second laser rangefinder on the test vehicle B are respectively used to measure the elevation of the cable tower segment vertically downward, and the elevation measurement data of the two laser rangefinders are respectively H B1 and H B2 . The inclination angle of the test vehicle B in the transverse direction of the bridge is calculated by the following formula : ， ； Among them, L B1 is the distance from the first laser rangefinder on test vehicle B to the bottom surface of test vehicle B, L B2 is the distance from the second laser rangefinder on test vehicle B to the side surface of test vehicle B, is the angle between the line connecting the first laser rangefinder and the second laser rangefinder on test vehicle A and the bottom surface of test vehicle A.

5. The positioning and surveying method for segmental splicing construction of a bridge steel cable tower according to claim 1, characterized in that Specifically included in the step S400: According to the elevation data measured by the first laser rangefinder on test vehicle A H A1 and the distance from the first laser rangefinder on test vehicle A to the inner side of the cable tower segment L A3 , calculate the elevation of the preset position of the cable tower segment H A : ； According to the elevation data measured by the first laser rangefinder on test vehicle B H B1 and the distance from the first laser rangefinder on test vehicle A to the inner side of the cable tower segment L B3 , the elevation of the preset position of the cable tower segment is calculated H B : 。 6. A positioning and surveying device for segmental splicing construction of a bridge steel cable tower, which is used to implement the surveying method described in any one of claims 1 to 5, and is characterized in that Including: The test vehicle A (11), the test vehicle B (12), several driving vehicles (2), a rope (4) and a rigid connecting rod (3) surrounding the side of the bridge cable tower segment (100), wherein the test vehicle A (11) and the test vehicle B (12) are connected by a rigid connecting rod (3), the test vehicle A (11) and the driving vehicle (2) are connected by a rigid connecting rod (3), and the driving vehicles (2) are connected by a rope (4). A spirit level (5) is provided on the upper surfaces of the test vehicle A (11) and the test vehicle B (12), and a first laser rangefinder (13) is provided on the sides of the test vehicle A (11) and the test vehicle B (12) away from the side of the bridge cable tower segment (100), and a second laser rangefinder (14) is provided on the bottom surfaces of the test vehicle A (11) and the test vehicle B (12) away from the spirit level (5).

7. The positioning and surveying device for segmental splicing construction of a bridge steel cable tower according to claim 6, characterized in that, The first laser rangefinder (13) and the test vehicle A (11) are hinged by a bracket; The first laser rangefinder (13) and the test vehicle B (12) are hinged by a bracket.

8. The positioning and surveying device for segmental splicing construction of a bridge steel cable tower according to claim 6, characterized in that, The second laser rangefinder (14) and the test vehicle A (11) are hinged by a bracket; The second laser rangefinder (14) and the test vehicle B (12) are hinged by a bracket.

9. The positioning and surveying device for segmental splicing construction of a bridge steel cable tower according to claim 6, characterized in that, A rope retracting device is provided in the driving vehicle (2), the rope retracting device includes a motor and a wire reel, a rope (4) is sleeved on the wire reel, and the rope (4) is retracted and released by driving the wire reel by the motor.

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