A method for checking the fine adjustment quality of a track plate

Abstract

The application discloses a kind of track slab fine adjustment quality's check method, after track slab fine adjustment is completed, again station is set and is virtually jointed measurement, can ensure that instrument has not changed, to eliminate the quality accident caused by measurement problem, avoid if track slab deviation is too large after directly pouring concrete, and it cannot be distinguished that it is instrument equipment problem or the quality problem caused by that fine adjustment achievement is not effectively protected after fine adjustment is completed, increase the checking step to effectively provide guarantee to the weak paragraph of station jointing change, it is convenient to ensure the reliability of fine adjustment achievement, increase the accuracy of track slab fine adjustment, and virtually jointed measurement spends shorter time, the influence of fine adjustment work length is not obvious, but can significantly improve the quality of check, avoid huge economic loss caused by that fine adjustment achievement is not effectively protected after fine adjustment is completed, is worth widely promoting.

Description

Technical Field

[0001] This invention relates to the field of track slab installation technology, and in particular to a method for checking the fine-tuning quality of track slabs. Background Technology

[0002] Currently, if the track slab needs to be fine-tuned by more than 60 meters on a given day, a station change is required. After the fine-tuning is completed, horizontal position data and elevation data are collected for all adjustment points. Each time a station is set up, the track slabs within the range are fine-tuned. After the fine-tuning of the previous station is completed, the track slabs are moved about 60 meters away and fine-tuned again until the task is completed.

[0003] Traditional surveying and standards do not specify the verification procedures for the final fine-tuning section, and the fine-tuning results only reflect the fine-tuning situation at that time. If changes in the instrument or other factors are not detected, such as a problem with the total station itself, it will affect the fine-tuning results, and the fine-tuning data will not be quality-verified. Or, if the coordinates of the last station are inaccurate due to instrument or tripod problems, it may cause errors in the measurement data of the subsequent stations, affecting the quality of the fine-tuning. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, which does not specify the inspection conditions for the final fine-tuning section or provide inspection methods. Once a quality problem occurs, it is impossible to determine the cause of the problem. In order to avoid the above-mentioned deficiencies, a method for inspecting the fine-tuning quality of track slabs is provided.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for checking the fine-tuning quality of track slabs includes the following steps:

[0007] a. Set up a station near the current joint point and make three fine adjustments to the track slab;

[0008] b. After fine-tuning is completed, collect the planar position and elevation information of all adjustment points in the current segment, and then move the fine-tuning equipment to the corresponding overlap point;

[0009] c. Move a pair of control points and set up a station near the next overlap point. Measure the horizontal position and elevation information of the previous overlap point. Calculate the overlap deviation between the horizontal and elevation deviations of the overlap point measured by the previous station and the corresponding horizontal and elevation deviations measured by the current station. If the overlap deviation meets the deviation requirements, then perform three fine adjustments on the unadjusted track slab between the previous overlap point and the current overlap point.

[0010] d. Repeat step c until the fine-tuning equipment is moved to the last overlap point and the track slab is fine-tuned three times;

[0011] e. Move a pair of control points, and re-establish the station for the last overlap point. Measure the horizontal position and elevation information of the last overlap point, and calculate the virtual overlap deviation between the two stations for the last overlap point. If the deviation requirement is met, the fine-tuning and verification of the track slab is completed.

[0012] The track slab fine-tuning quality verification method described in this invention involves re-establishing stations for virtual overlap measurement after the track slab fine-tuning is completed. This ensures that the instrumentation remains unchanged, thus preventing quality accidents caused by measurement issues. It also avoids the inability to distinguish whether excessive track slab deviation after direct concrete pouring is due to instrument problems or ineffective protection of fine-tuning results. The added verification step effectively safeguards weak sections during station transitions, ensuring the reliability of fine-tuning results and increasing the accuracy of track slab fine-tuning. Furthermore, the virtual overlap measurement is relatively quick, having little impact on the overall fine-tuning time, but significantly improves verification quality and prevents substantial economic losses due to ineffective protection of fine-tuning results. This method is worthy of widespread promotion.

[0013] Preferably, the three fine-tuning steps include the following:

[0014] s1. Set up the total station freely and fine-tune the track slab until the deviation between the plane position and the design plane position is within ±5mm and the deviation between the elevation and the design elevation is -5~0mm;

[0015] s2. Without moving the original station, re-establish the station, fine-tune the track slab until the deviation between the horizontal position and the design horizontal position is within ±2mm, and the deviation between the elevation and the design elevation is -2~0mm, and install the fishplate;

[0016] s3. Without moving the station, re-establish the station and fine-tune the track slab until the deviation between the plane position and the design plane position is within ±0.5mm and the deviation between the elevation and the design elevation is -0.5~0mm.

[0017] A three-stage fine-tuning method was proposed, which solved the rigid requirement of adjusting the plane to within 5mm and the elevation to -5mm to 0mm in conventional fine-tuning. It combined the coarse and fine-tuning of the track slab into one, reduced the fine-tuning steps, saved manpower, material resources and financial resources, and did not significantly increase the workload. It also solved the problem of the impact of instrument changes on the fine-tuning results. Furthermore, the fishplate was installed after the second fine-tuning, which had little impact on the rail.

[0018] Preferably, the deviation requirement in step c is within ±2mm.

[0019] Preferably, the deviation in step e is required to be within ±1.5mm.

[0020] Preferably, the control point is the CPIII control point.

[0021] Preferably, in step e, if the deviation requirement is not met, the total station is moved to the previous station to set up the station and the track slab is fine-tuned again until the deviation requirement is met.

[0022] Preferably, the distance between the station and the corresponding overlap point is 5-10m.

[0023] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The method for checking the quality of track slab fine-tuning described in this invention involves setting up a virtual overlap measurement again after the track slab fine-tuning is completed. This ensures that the instrument has not changed, thereby preventing quality accidents caused by measurement problems. It also avoids the situation where if the track slab deviation is too large after direct concrete pouring, it is impossible to distinguish whether the quality problem is caused by the instrument or the failure to effectively protect the fine-tuning results after the fine-tuning is completed. The added verification step effectively provides protection for weak sections of the overlap at the changeover, making it easier to ensure the reliability of the fine-tuning results and increasing the accuracy of the track slab fine-tuning. Moreover, the virtual overlap measurement takes less time and has little impact on the fine-tuning work time, but it can significantly improve the verification quality and avoid huge economic losses caused by the failure to effectively protect the fine-tuning results after the fine-tuning is completed. It is worthy of widespread promotion.

[0025] 2. The method of three-round fine adjustment was optimized. A method of three-round fine adjustment with three stations was proposed, which solved the rigid requirement of adjusting the plane to within 5mm and the elevation to -5mm to 0mm in conventional fine adjustment. It combined the coarse and fine adjustment of the track plate into one, reduced the fine adjustment steps, saved manpower, material resources and financial resources, did not increase the workload by a large area, and also solved the impact of instrument changes on the fine adjustment results. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overlap points and station layout of the track slab fine-tuning quality inspection method described in this invention. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0028] Example 1

[0029] A method for checking the fine-tuning quality of track slabs includes the following steps:

[0030] a. Set up a station near the current joint point and make three fine adjustments to the track slab;

[0031] b. After fine-tuning is completed, collect the planar position and elevation information of all adjustment points in the current segment, and then move the fine-tuning equipment to the corresponding overlap point;

[0032] c. Move a pair of control points and set up a station near the next overlap point. Measure the horizontal position and elevation information of the previous overlap point. Calculate the overlap deviation between the horizontal and elevation deviations of the overlap point measured by the previous station and the corresponding horizontal and elevation deviations measured by the current station. If the overlap deviation meets the deviation requirements, then perform three fine adjustments on the unadjusted track slab between the previous overlap point and the current overlap point.

[0033] d. Repeat step c until the fine-tuning equipment is moved to the last overlap point and the track slab is fine-tuned three times;

[0034] e. Move a pair of control points, and re-establish the station for the last overlap point. Measure the horizontal position and elevation information of the last overlap point, and calculate the virtual overlap deviation between the two stations for the last overlap point. If the deviation requirement is met, the fine-tuning and verification of the track slab is completed.

[0035] Specifically, with Figure 1 For example, at station C1, which is 5-10m away from the overlap point A, the track slab is first freely set up. The first fine adjustment is made so that the deviation between the plane position and the design plane position is within ±5mm and the deviation between the elevation and the design elevation is -5~0mm.

[0036] Observe the total station bubble. If the bubble moves, it needs to be leveled. Set up the station for the second time at station C1. Do not move the station. Only remeasure the CPIII control point to complete the re-setting. Then, fine-tune the track plate a second time until the deviation between the plane position and the design plane position is within ±2mm and the deviation between the elevation and the design elevation is -2~0mm. Then install the fishplate.

[0037] Regardless of whether the total station bubble moves, that is, only the instrument needs to be leveled and no centering is required. At the setting point C1, the third setting is carried out in the same way as the second setting. The track plate is fine-tuned until the deviation between the plane position and the design plane position is within ±0.5mm and the elevation deviation from the design elevation is -0.5~0mm. After the fine-tuning is completed, the plane position information and elevation information of all adjustment points of the current segment are collected and stored. Then the fine-tuning equipment is moved to the overlap point A.

[0038] Move one pair of CPIII to the location of station C2 near the overlap point B. After the station is set up, measure the plane position and elevation information of the overlap point A, and calculate the overlap deviation between the overlap point A and the overlap point B. If the deviation requirement is met, such as both being within ±2mm, move the fine adjustment equipment to the overlap point B and perform three fine adjustments on the track slab.

[0039] If there are any subsequent overlap points, repeat step c and move the fine-tuning equipment to the station C2 to perform three station-based fine-tuning operations on the corresponding track slab, as described in step a.

[0040] by Figure 1 For example, since there is no track slab after the overlap point B, no further fine-tuning was performed. Therefore, overlap point B is a virtual overlap point. Move a pair of CPIII control points and re-establish the station at station C3. Check the final fine-tuning section by measuring the horizontal position and elevation information of overlap point B, and calculating the virtual overlap deviation between the station C2 and C3 of overlap point B. If the deviation requirements are met, such as being within ±1.5mm, then it proves that the instrument has not changed, thus preventing quality accidents caused by measurement problems. It also provides technical protection for the surveyors, and the fine-tuning check of the track slab is completed.

[0041] If the deviation requirements are not met, i.e., either the horizontal position or the elevation is not met, then move the total station to the set station C2 and fine-tune the track slab again until the deviation requirements are met.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for checking the fine adjustment quality of a track plate, characterized by, It comprises the following steps: a. Stationing near the current lap joint and performing three times of fine adjustment on the track slab, which comprises the following steps: s1. Free stationing of the total station instrument, fine adjustment of the track slab to within ±5mm of the design plan position and -5~0mm of the design elevation; s2. Re-stationing without moving the stationing point, fine adjustment of the track slab to within ±2mm of the design plan position and -2~0mm of the design elevation, and installation of the fish plate; s3. Re-stationing again without moving the stationing point, fine adjustment of the track slab to within ±0.5mm of the design plan position and -0.5~0mm of the design elevation; b. After the fine adjustment, collecting the plan position information and elevation information of all adjustment points of the current segment, and then moving the fine adjustment equipment to the corresponding lap joint; c. Moving a pair of control points, stationing near the next lap joint, measuring the plan position information and elevation information of the previous lap joint, calculating the lap deviation between the plan deviation and elevation deviation of the lap joint measured by the previous stationing point and the plan deviation and elevation deviation of the corresponding lap joint measured by the current stationing point, and if the lap deviation meets the deviation requirement, performing three times of fine adjustment on the unadjusted track slab between the previous lap joint and the current lap joint; d. Repeating step c until the fine adjustment equipment is moved to the last lap joint and three times of fine adjustment is performed on the track slab; e. Moving a pair of control points, re-stationing at the stationing point near the last lap joint, measuring the plan position information and elevation information of the last lap joint, calculating the virtual lap deviation between the two stationing points of the last lap joint, and if the deviation requirement is met, completing the fine adjustment and inspection of the track slab.

2. The method of claim 1, wherein the method further comprises: The deviation requirement in step c is within ±2mm.

3. The method of claim 1, wherein the method further comprises: The deviation requirement in step e is within ±1.5mm.

4. The method of claim 1, wherein the method further comprises: The control points are CPIII control points.

5. The method of claim 1-4, wherein the method further comprises: In step e, if the deviation requirement is not met, the total station instrument is moved to the previous stationing point for stationing and fine adjustment of the track slab again until the deviation requirement is met.

6. The method of claim 1-4, wherein the method further comprises: The distance between the stationing point and the corresponding lap joint is 5-10m.

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