A method for installing a floating dock closing stage dock crane track forward

Abstract

The application discloses a floating dock closing stage dock crane track forward installation method, including the following steps: step 1: surveying the inner and outer dock wall track center line; step 2: setting square steel pipe as a reference pole; step 3: surveying the pad installation line; step 4: measuring and determining the thickness of each pad; step 5: positioning and closing the next to-be-closed dock wall section; step 6: extending the surveying inner and outer dock wall track center line; step 7: surveying the pad installation line on the top deck of the newly-closed dock wall section; step 8: repeating steps 5-7 until all the dock wall sections are positioned and closed; step 9: checking the fitting degree of the pad and the top deck; step 10: welding the pad and the top deck; step 11: welding the pad and the track presser bottom plate; step 12: track installation; and step 13: track installation acceptance. The application enables the track installation work to be carried out synchronously with the closing of the dock wall sections in the floating dock closing stage, thereby shortening the occupation time of the dock.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to a method for moving and installing dock crane tracks forward during the dock closure stage. Background Technology

[0002] The typical installation process for floating dock crane tracks involves surveying and measuring the levelness of the track along the entire length of the dock wall after the dock wall structure is assembled, followed by track installation.

[0003] The existing installation method usually requires the dock wall structure to be fully assembled and welded, and the dock wall deck levelness to be tested and qualified. However, track measurement and installation take a lot of time, resulting in a long construction cycle inside the dock. Furthermore, the construction of track line surveying along the entire length of the dock wall is difficult, and the measurement accuracy control is also difficult.

[0004] Based on the above problems, this application proposes a method for installing dock crane tracks during the dock closure stage of a floating dock. This method is characterized by high accuracy, convenient and reliable measurement, simultaneous installation with the dock wall closure process, and effective shortening of the docking period. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for moving the dock crane track forward during the dock closure stage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for advancing and installing dock crane tracks during the dock closure stage includes the following steps:

[0008] Step 1: Mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the completed dock wall section.

[0009] Step 2: Set several square steel pipes as reference benchmarks along the length of the top deck of the completed dock wall section. Attach a second target to each of the two panels at the beginning and end of the square steel pipes. The center point of the second target on all the square steel pipes should be at the same height, and the distance between the center point of the second target on all the square steel pipes and the vertical plane containing the center line L1 of the outer dock wall track should be the same.

[0010] Step 3: Mark the installation lines for the pads on the top deck of the reference dock section at the center line L1 of the outer dock wall track and the center line L2 of the inner dock wall track;

[0011] Step 4: Measure and determine the thickness of each pad;

[0012] Step 5: Position and assemble the next section of the dock wall to be assembled;

[0013] Step 6: Extend and mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the newly joined dock wall section;

[0014] Step 7: Following the methods in Steps 2 to 4, mark the installation lines for the pads on the top deck of the newly joined dock wall section and determine the thickness of each pad.

[0015] Step 8: Repeat steps 5 to 7 until all the dock wall sections are positioned and joined together;

[0016] Step 9: Place each pad at the corresponding pad installation line position and check the fit between the pad and the top plate.

[0017] Step 10: Weld the base plate to the top deck;

[0018] Step 11: Weld the pad to the bottom plate of the rail clamp;

[0019] Step 12: Install the tracks and accessories according to the track bottom outlines of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the respective track bottom outlines of the outer dock wall track centerline L1 and the inner dock wall track centerline L2.

[0020] Step 13: Track installation and acceptance.

[0021] Preferably, in step 1, the method for drawing the rail bottom contour lines and inspection lines of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the outer dock wall track centerline L1 and the inner dock wall track centerline L2 is as follows:

[0022] Step 1.1: Place the first optical target at the theoretical line drawing point of each section of the inner and outer dock wall at the top deck closure of the completed reference dock wall section;

[0023] Step 1.2: Use a total station to measure the three-dimensional coordinates of the theoretical line point where the first optical target is located;

[0024] Step 1.3: Calculate the average value m of the coordinates of all theoretical line drawing points in the width direction of the dock wall;

[0025] Step 1.4: Mark the corrected punch point on the top deck at the dock wall length position corresponding to each theoretical punch point. The coordinates of the corrected punch point in the dock wall width direction are the average value m.

[0026] Step 1.5: Mark the center line L1 of the outer dock wall track by drawing ink lines on each correction punch point at the outer dock wall; mark the center line L2 of the inner dock wall track by drawing ink lines on each correction punch point at the inner dock wall.

[0027] Step 1.6: Based on the width of the bottom of the dock crane rail, draw the outline of the bottom of the rail on both sides of the center line L1 of the outer dock wall rail and the center line L2 of the inner dock wall rail respectively;

[0028] Step 1.7: Mark the inspection lines L1 for the outer dock wall track and L2 for the inner dock wall track on the inside of the dock crane track.

[0029] Preferably, in step 3, the mounting line of each pad includes a center line in the length direction and a center line in the width direction. The center line in the length direction is perpendicular to the corresponding track center line, and the center line in the width direction is collinear with the corresponding track center line.

[0030] Preferably, the distance l between the two ends of the centerline in the length direction and the corresponding centerline of the track is not less than 240mm.

[0031] Preferably, in step 4, the method for measuring and determining the thickness of each pad includes the following steps:

[0032] Step 4.1: Use a total station to measure the height difference between the center point of each pad installation line and the center point of the second optical target on the square steel pipe;

[0033] Step 4.2: Select the center point of the pad installation line with the smallest height difference between the pad and the center point of the second optical target on the square steel tube, mark it as point A, and determine the thickness of the pad at point A as H;

[0034] Step 4.3: Based on the height difference measured in Step 4.1, and taking the fact that the top surfaces of all the pads are at the same horizontal level after the pads are installed as the standard, determine the thickness of the remaining pads.

[0035] Preferably, in step 4.3, the thickness H of the remaining pads is... i The calculation formula is as follows:

[0036] H i =H+h i -hi=1,2,3,…(1)

[0037] In equation (1),

[0038] H i This indicates the thickness of the pad with serial number i, where i represents the serial number of the pad.

[0039] H represents the thickness of the pad at point A;

[0040] h represents the height difference between point A and the center point of the second optical target on the square steel tube;

[0041] h iThis represents the height difference between the center point of the mounting line of the pad with serial number i and the center point of the second optical target on the square steel tube.

[0042] Preferably, the method for positioning and merging the next section of the dock wall to be merged in step 5 includes the following steps:

[0043] Step 5.1: Measure the levelness of the top deck of the next dock wall section to be joined, find the highest point on the theoretical lines of the inner and outer dock walls on the top deck of the dock wall section to be joined, and mark it as B. j Point, where j represents the sequence number of the dock wall segment to be joined, j = 1, 2, 3, ...;

[0044] Step 5.2: Set up the third optical target at the theoretical line positions of the inner and outer dock walls at the beginning and end of the top deck of the dock wall section to be joined;

[0045] Step 5.3: When closing, ensure B j The height of point A cannot be higher than point A. The two third optical targets on the theoretical line of the outer dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L1 of the outer dock wall track. The two third optical targets on the theoretical line of the inner dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L2 of the inner dock wall track.

[0046] The beneficial effects of this invention are:

[0047] The installation method of this invention allows the track installation work to be carried out simultaneously with the closure of the dock wall sections during the dock closure phase, shortening the dock occupancy time. Simultaneously, the design of simultaneous track installation and dock wall closure allows for segmented and extended track centerline surveying, resulting in high measurement accuracy and convenient, reliable measurement. This avoids the difficulties in surveying and construction, and the challenges in controlling measurement accuracy associated with surveying the track line along the entire length of the dock wall. The unevenness of the top deck is adjusted by calculating the thickness of the shims. Furthermore, by pre-setting third optical targets at the theoretical dock wall lines at the beginning and end of the top deck sections of the dock wall to be closed, the alignment and straightness of the track centerline are ensured. Attached Figure Description

[0048] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0049] Figure 1 This is a schematic left view of the arrangement of the first optical target in this invention;

[0050] Figure 2 This is a three-dimensional schematic diagram of the arrangement of the first optical target in this invention;

[0051] Figure 3 This is a schematic diagram showing the position of the corrected punch point in this invention;

[0052] Figure 4 This is a schematic diagram showing the positional relationship between the track centerline, the track bottom outline, and the inspection line in this invention;

[0053] Figure 5 This is a schematic diagram of the arrangement of the steel pipes in the present invention, (a) top view, (b) sectional view along line AA of (a);

[0054] Figure 6 This is a schematic diagram of the mounting line of the pad in this invention;

[0055] Figure 7 This is a schematic diagram illustrating the principle of determining the thickness of the pad in this invention;

[0056] Figure 8 This is a schematic diagram of the overall height control of the dock wall section to be joined in this invention;

[0057] Figure 9 This is a schematic diagram of the arrangement of the third optical target in this invention;

[0058] Figure 10 This is a schematic diagram of the installation of the positioning plate during track installation in this invention;

[0059] in:

[0060] 1-First optical target, 2-Square steel pipe, 3-Second optical target. Detailed Implementation

[0061] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, nor should they be construed as limiting this invention.

[0064] In this invention, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0065] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0066] A method for advancing and installing dock crane tracks during the dock closure stage includes the following steps:

[0067] Step 1: Mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the completed dock wall section.

[0068] Preferably, in step 1, the method for drawing the rail bottom contour lines and inspection lines of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the outer dock wall track centerline L1 and the inner dock wall track centerline L2 is as follows:

[0069] Step 1.1: Place the first optical target 1 at the theoretical line drawing point of each segment of the inner and outer dock walls at the joining joint of the top deck of the already joined reference dock wall section, such as... Figure 1 , Figure 2 As shown; the surveying of the theoretical line points of the inner and outer dock walls of each segment is an existing technology, which was completed in the segment construction stage before closure, and the detailed surveying method will not be described in detail here.

[0070] Step 1.2: Use a total station to measure the three-dimensional coordinates of the theoretical line sample punch point where the first optical target 1 is located;

[0071] Step 1.3: Calculate the average value m of the coordinates of all theoretical line drawing points in the width direction of the dock wall;

[0072] Step 1.4: As Figure 3 As shown, correction point marks based on theoretical point marks are made on the top deck at the dock wall length position corresponding to each theoretical point mark. The coordinates of the correction point marks in the dock wall width direction are the average value m.

[0073] Step 1.5: Mark the center line L1 of the outer dock wall track by drawing ink lines on each correction punch point at the outer dock wall; mark the center line L2 of the inner dock wall track by drawing ink lines on each correction punch point at the inner dock wall.

[0074] Step 1.6: Based on the width of the bottom of the dock crane rail, draw the outline of the bottom of the rail on both sides of the center line L1 of the outer dock wall rail and the center line L2 of the inner dock wall rail respectively;

[0075] Step 1.7: Mark the inspection lines for the center line L1 of the outer dock wall track and the center line L2 of the inner dock wall track on the inside of the dock crane track;

[0076] Specifically, such as Figure 4 As shown, the distance between the rail bottom outline and the corresponding rail centerline is half the width of the rail bottom; the distance between the inspection line and the corresponding rail centerline is d, where d = (rail bottom width / 2) + 100.

[0077] When the rail base width is 150mm, the distance between the rail base outline and the corresponding rail centerline is 75mm, and the distance d between the inspection line and the corresponding rail centerline is 175mm.

[0078] Step 2: As Figure 5 As shown, several square steel pipes 2 are set as reference benchmarks along the length of the top deck of the completed reference dock wall section. A second light target 3 is attached to each of the two panels at the beginning and end of the square steel pipe 2. The center point of the second light target 3 on all the square steel pipes 2 is at the same height, and the distance between the center point of the second light target 3 on all the square steel pipes 2 and the vertical plane where the center line L1 of the outer dock wall track is located is the same. The distance between adjacent square steel pipes 2 is 50m.

[0079] Specifically, in step 2, the two second optical targets 3 in the head and tail directions of the square steel pipe 2 are calibrated using a rotating optical target transfer station to ensure that the center points of the two second optical targets 3 are at the same height and that the distance between the center points of the two second optical targets 3 and the vertical plane containing the center line L1 of the outer dock wall track is consistent, with a calibration error of less than 0.5 mm. The calibration using a rotating optical target transfer station is existing technology, and its specific implementation will not be described in detail here.

[0080] Step 3: Mark the installation lines for the pads on the top deck of the reference dock section at the center line L1 of the outer dock wall track and the center line L2 of the inner dock wall track;

[0081] Specifically, using the track joint as the surveying reference, the installation lines of each pad are surveyed sequentially from beginning to end. In step 3, as shown... Figure 6 As shown, the mounting line of each pad includes a center line in the length direction and a center line in the width direction. The center line in the length direction is perpendicular to the corresponding track center line, and the center line in the width direction is collinear with the corresponding track center line.

[0082] When marking the installation line of the pad plate on the top deck of the reference dock section at the center line L1 of the outer dock wall track, the center line in the length direction is perpendicular to the center line L1 of the outer dock wall track, and the center line in the width direction is collinear with the center line L1 of the outer dock wall track.

[0083] When marking the installation line of the pad plate on the top deck of the reference dock section at the center line L2 of the inner dock wall track, the center line in the length direction is perpendicular to the center line L2 of the inner dock wall track, and the center line in the width direction is collinear with the center line L2 of the inner dock wall track.

[0084] Specifically, such as Figure 6 As shown, the distance l between the two ends of the centerline in the length direction and the corresponding centerline of the track should not be less than 240mm, so as to check the installation accuracy of the pad plate later.

[0085] Step 4: Measure and determine the thickness of each pad;

[0086] Specifically, in step 4, the method for measuring and determining the thickness of each pad includes the following steps:

[0087] Step 4.1: Use a total station to measure the height difference between the center point of each pad installation line and the center point of the second optical target on the square steel pipe; when measuring the corresponding height difference of each pad installation line center point, the nearest square steel pipe is used as the reference benchmark; the measured height differences are recorded in Table 1, which is helpful to quickly count the required number of pads and perform nesting, improve construction efficiency, and shorten the construction cycle.

[0088] Table 1. Measurement Record of Height Difference Between Left and Right Side Dock Crane Track Pads

[0089]

[0090] Step 4.2: Select the center point of the pad installation line with the smallest height difference between the pad and the center point of the second optical target on the square steel tube, mark it as point A, and determine the thickness of the pad at point A as H, where H is 15mm;

[0091] Step 4.3: Based on the height difference measured in Step 4.1, and taking the fact that the top surfaces of all the pads are at the same horizontal level after the pads are installed as the standard, determine the thickness of the remaining pads. The pads determined in this way can provide a flat support surface for the track.

[0092] Specifically, such as Figure 7 As shown, in step 4.3, the thickness H of the remaining pads... i The calculation formula is as follows:

[0093] H i =H+h i -hi=1,2,3,… (1)

[0094] In equation (1),

[0095] H i This indicates the thickness of the pad with serial number i, where i represents the serial number of the pad.

[0096] H represents the thickness of the pad at point A;

[0097] h represents the height difference between point A and the center point of the second optical target on the square steel tube;

[0098] h i This represents the height difference between the center point of the mounting line of the pad with serial number i and the center point of the second optical target on the square steel tube.

[0099] Step 5: Position and assemble the next section of the dock wall to be assembled;

[0100] Specifically, the method for positioning and merging the next section of the dock wall to be joined in step 5 includes the following steps:

[0101] Step 5.1: Measure the levelness of the top deck of the next dock wall section to be joined, find the highest point on the theoretical lines of the inner and outer dock walls on the top deck of the dock wall section to be joined, and mark it as B. j Point, where j represents the sequence number of the dock wall segment to be joined, j = 1, 2, 3, ...;

[0102] Step 5.2: Set up third optical targets at the theoretical line positions of the inner and outer dock walls at the fore and aft openings of the top deck of the dock wall section to be joined; such as Figure 9 As shown, third optical targets E and F are set on the theoretical line of the inner dock wall at the beginning and end of the top deck of the dock wall section to be joined, and third optical targets C and D are set on the theoretical line of the outer dock wall at the beginning and end of the top deck of the dock wall section to be joined.

[0103] Step 5.3: When closing, as Figure 8 As shown, ensure B j The height of point A cannot be higher than point A. The two third light targets on the theoretical line of the outer dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L1 of the outer dock wall track. The two third light targets on the theoretical line of the inner dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L2 of the inner dock wall track. That is, when joining, the third light targets C and D are located on the center line L1 of the outer dock wall track, and the third light targets E and F are located on the center line L2 of the inner dock wall track.

[0104] Step 6: Extend and mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the newly joined dock wall section;

[0105] Step 7: Following the methods in Steps 2 to 4, mark the installation lines for the pads on the top deck of the newly joined dock wall section and determine the thickness of each pad.

[0106] Step 8: Repeat steps 5 to 7 until all the dock wall sections are positioned and joined together;

[0107] Step 9: Place each pad at the corresponding pad installation line position and check the fit between the pad and the top plate.

[0108] Specifically, place the pads of the corresponding thickness at the corresponding pad installation line positions on the top deck. The pads are not sealed or subjected to any other external force. Then, when a 0.5mm thick feeler gauge is inserted from any direction into the pad, if the feeler gauge cannot pass through the entire pad, it is considered that the fit between the pad and the top deck meets the usage requirements. For areas that do not meet the requirements, the local flatness of the top deck is adjusted.

[0109] Step 10: Weld the base plate to the top deck;

[0110] Before welding the backing plate, spot welding should be performed according to the relevant welding process. Symmetrical welding should be used during welding to reduce welding deformation.

[0111] Step 11: Weld the pad to the bottom plate of the rail clamp;

[0112] Carry out the marking, installation, and welding of the rail clamp base plate according to the corresponding professional design drawings;

[0113] Step 12: Install the tracks and accessories according to the track bottom outlines of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the respective track bottom outlines of the outer dock wall track centerline L1 and the inner dock wall track centerline L2.

[0114] When installing the track, such as Figure 10 As shown, a positioning plate can be used, with the edge of the positioning plate aligned with the outline of the rail base. The installation of the rail and accessories can be achieved using existing technology, and the specific installation method will not be described in detail here.

[0115] Step 13: Track installation and acceptance.

[0116] The track acceptance shall be conducted in accordance with relevant standards, as follows:

[0117] a. The gap between rail joints shall not exceed 2mm;

[0118] b. The height difference and lateral misalignment at the track connection should not exceed 1mm, and should be checked with a steel ruler;

[0119] c. The tolerance for the distance S between the centerlines of the two tracks at any point on the track is ±5mm;

[0120] d. Straightness tolerance of the top of a single track: less than 1mm per 2m;

[0121] e. Height difference between two tracks within any cross-section: ≤5mm

[0122] f. Single track installation tilt error: Height difference between the two ends of the track base <1mm;

[0123] g. The deviation between the center of a single track and the theoretical lines of the inner and outer dock walls is less than ±5mm.

[0124] The installation method of this invention allows the track installation to be carried out simultaneously with the closure of the dock wall sections during the dock closure phase, shortening the dock occupancy time. Furthermore, the design of simultaneous track installation and dock wall closure allows for segmented and extended track centerline surveying, resulting in high measurement accuracy and convenient, reliable measurement. This avoids the difficulties in surveying and construction, and the challenges in controlling measurement accuracy associated with surveying the track line along the entire length of the dock wall. The unevenness of the top deck is adjusted by calculating the thickness of the pad. By pre-setting third optical targets at the theoretical dock wall lines at the beginning and end of the top deck sections to be closed, the alignment and straightness of the track centerline are ensured.

[0125] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, they are not intended to limit the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A method for advancing and installing dock crane tracks during the dock closure stage, characterized in that, Includes the following steps: Step 1: Mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the completed dock wall section. Step 2: Set several square steel pipes as reference benchmarks along the length of the top deck of the completed dock wall section. Attach a second target to each of the two panels at the beginning and end of the square steel pipes. The center point of the second target on all the square steel pipes should be at the same height, and the distance between the center point of the second target on all the square steel pipes and the vertical plane containing the center line L1 of the outer dock wall track should be the same. Step 3: Mark the installation lines for the pads on the top deck of the reference dock section at the center line L1 of the outer dock wall track and the center line L2 of the inner dock wall track; Step 4: Measure and determine the thickness of each pad; Step 5: Position and assemble the next section of the dock wall to be assembled; Step 6: Extend and mark the rail bottom outline and inspection line of the outer dock wall track center line L1, the inner dock wall track center line L2, and the outer dock wall track center line L1 and the inner dock wall track center line L2 on the top deck of the newly joined dock wall section; Step 7: Following the methods in Steps 2 to 4, mark the installation lines for the pads on the top deck of the newly joined dock wall section and determine the thickness of each pad. Step 8: Repeat steps 5-7 until all sections of the dock wall are positioned and joined together; Step 9: Place each pad at the corresponding pad installation line position and check the fit between the pad and the top plate. Step 10: Weld the base plate to the top deck; Step 11: Weld the pad to the bottom plate of the rail clamp; Step 12: Install the tracks and accessories according to the track bottom outlines of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the respective track bottom outlines of the outer dock wall track centerline L1 and the inner dock wall track centerline L2. Step 13: Track installation and acceptance; In step 1, the method for drawing the rail bottom outline and inspection line of the outer dock wall track centerline L1, the inner dock wall track centerline L2, and the outer dock wall track centerline L1 and the inner dock wall track centerline L2 is as follows: Step 1.1: Place the first optical target at the theoretical line drawing point of each section of the inner and outer dock wall at the top deck closure of the completed reference dock wall section; Step 1.2: Use a total station to measure the three-dimensional coordinates of the theoretical line point where the first optical target is located; Step 1.3: Calculate the average value m of the coordinates of all theoretical line drawing points in the width direction of the dock wall; Step 1.4: Mark the corrected punch point on the top deck at the dock wall length position corresponding to each theoretical punch point. The coordinates of the corrected punch point in the dock wall width direction are the average value m. Step 1.5: Mark the center line L1 of the outer dock wall track by drawing ink lines on each correction punch point at the outer dock wall; mark the center line L2 of the inner dock wall track by drawing ink lines on each correction punch point at the inner dock wall. Step 1.6: Based on the width of the bottom of the dock crane rail, draw the outline of the bottom of the rail on both sides of the center line L1 of the outer dock wall rail and the center line L2 of the inner dock wall rail respectively; Step 1.7: Mark the inspection lines for the center line L1 of the outer dock wall track and the center line L2 of the inner dock wall track on the inside of the dock crane track; Step 4, the method for measuring and determining the thickness of each pad, includes the following steps: Step 4.1: Use a total station to measure the height difference between the center point of each pad installation line and the center point of the second optical target on the square steel pipe; Step 4.2: Select the center point of the pad installation line with the smallest height difference between the pad and the center point of the second optical target on the square steel tube, mark it as point A, and determine the thickness of the pad at point A as H; Step 4.3: Based on the height difference measured in Step 4.1, and taking the fact that the top surfaces of all the pads are at the same horizontal level after the pads are installed as the standard, determine the thickness of the remaining pads.

2. The method for advancing the installation of the dock crane track during the dock closure stage as described in claim 1, characterized in that, In step 3, the mounting line of each pad includes a center line in the length direction and a center line in the width direction. The center line in the length direction is perpendicular to the corresponding track center line, and the center line in the width direction is collinear with the corresponding track center line.

3. The method for advancing the dock crane track during the dock closure stage as described in claim 2, characterized in that, The distance l between the two ends of the centerline in the length direction and the corresponding centerline of the track shall not be less than 240mm.

4. The method for advancing the dock crane track during the dock closure stage as described in claim 1, characterized in that, In step 4.3, the thickness of the remaining pads The calculation formula is as follows: （1） In equation (1), This indicates the thickness of the pad with serial number i, where i represents the serial number of the pad. This indicates the thickness of the pad at point A; This represents the height difference between point A and the center point of the second optical target on the square steel tube; This represents the height difference between the center point of the mounting line of the pad with serial number i and the center point of the second optical target on the square steel tube.

5. The method for advancing the dock crane track during the dock closure stage as described in claim 1, characterized in that, The method for positioning and merging the next section of the dock wall to be joined in step 5 includes the following steps: Step 5.1: Measure the levelness of the top deck of the next dock wall section to be joined, find the highest point on the theoretical lines of the inner and outer dock walls on the top deck of the dock wall section to be joined, and mark it as B. j Point, where j represents the sequence number of the dock wall segment to be joined, j=1,2,3,…; Step 5.2: Set up the third optical target at the theoretical line positions of the inner and outer dock walls at the beginning and end of the top deck of the dock wall section to be joined; Step 5.3: When closing, ensure B j The height of point A cannot be higher than point A. The two third optical targets on the theoretical line of the outer dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L1 of the outer dock wall track. The two third optical targets on the theoretical line of the inner dock wall at the beginning and end of the top deck of the dock wall section to be joined are located on the center line L2 of the inner dock wall track.

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