CN110554238A - Stray current prevention testing method for subway integral ballast bed construction - Google Patents
Stray current prevention testing method for subway integral ballast bed construction Download PDFInfo
- Publication number
- CN110554238A CN110554238A CN201910692679.8A CN201910692679A CN110554238A CN 110554238 A CN110554238 A CN 110554238A CN 201910692679 A CN201910692679 A CN 201910692679A CN 110554238 A CN110554238 A CN 110554238A
- Authority
- CN
- China
- Prior art keywords
- testing
- steel rail
- ballast bed
- construction
- drainage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 143
- 238000010276 construction Methods 0.000 title claims abstract description 60
- 230000002265 prevention Effects 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 238000009415 formwork Methods 0.000 claims 1
- 238000002513 implantation Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011835 investigation Methods 0.000 abstract description 3
- 201000010099 disease Diseases 0.000 abstract description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention relates to the technical field of engineering integral ballast bed construction, in particular to a stray current prevention testing method for subway integral ballast bed construction, which is characterized in that the following tests are carried out in any item in the construction process before the concrete pouring of a ballast bed: testing the internal resistance of the steel rail; testing the internal resistance of the ballast bed drainage network; testing the transition resistance between the steel rail and the adjacent structure by using the transition resistance between the steel rail and the ballast bed drainage network; and testing the transition resistance between the ballast bed drainage network and an adjacent structure. Compared with the prior art, the invention has the advantages that: a set of complete stray current construction detection method and construction quality control measures in the construction process are provided, and the hidden danger of stray current leakage can be controlled fundamentally, reduced in a large range and a large degree; detection control can be carried out before engineering concealment, and later investigation and rectification costs are reduced; the position of the disease can be found visually in the detection process, and the direction is indicated for the control of the stray current in the subsequent construction.
Description
Technical Field
the invention relates to the technical field of engineering integral ballast bed construction, in particular to a stray current prevention testing method for subway integral ballast bed construction.
Background
as is known, the stray current of the subway is a harmful current, and can corrode reinforcing mesh and metal pipelines laid in the whole track bed and adjacent structures of the subway track, if the stray current is prevented from being unqualified in the track bed construction process, the transition resistance of a steel rail and the track bed is too small, the corrosion current in the track bed is too large, and after the reinforcing mesh and the embedded pipelines of the track bed are corroded, the structural rigidity and the stability of the track bed are reduced, so that the safety performance of a track system is influenced.
At present, the stray current prevention test of the ballastless track bed of the subway track engineering in China is summarized as follows: firstly, after track laying is finished, detecting the electrical communication performance and the stray current value of a track bed drainage network by using a test terminal reserved on the whole track bed so as to judge whether stray current prevention construction meets requirements or not; and secondly, after the track laying is finished, the transition resistance values of the test steel rails and the track bed reinforcing mesh and the adjacent structure reinforcing mesh of each section are compared with design and standard required values, and the corrosion degree of the stray current leakage in the interval structure to the reinforcing mesh, equipment and pipelines in the interval structure is analyzed, so that whether the stray current prevention measures meet the requirements or not is judged.
Meanwhile, subway track design drawings generally require that the drainage area of reinforcing steel bars of the track bed is not less than 3000mm 2, but whether construction errors caused by different actual welding qualities can influence the performance of the drainage network for collecting stray currents cannot be accurately judged.
Therefore, the test of the electric communication performance of the steel rail to ground transition resistance and the drainage network is implemented after the track construction is completed, if the drainage network in the whole track bed is detected to be not qualified, the rectification scheme can only be constructed again after the track bed is chiseled, and the rectification scheme is difficult to implement and has high cost.
disclosure of Invention
The invention aims to solve the defects of the prior art and provides a stray current prevention testing method for the construction of a subway integral track bed.
in order to achieve the purpose, the stray current prevention testing method for the construction of the integral subway ballast bed is designed, and the following tests are carried out in any item in the construction process before the concrete of the ballast bed is poured: a. testing the internal resistance of the steel rail: detecting the internal resistance value of the steel rail, and comparing the internal resistance value with the designed internal resistance value of the steel rail in unit length; b. testing the internal resistance of the ballast bed drainage network: detecting the resistance value between drainage terminals at two ends of the same side on the track bed drainage network of each track bed block; c. testing the transition resistance between the steel rail and the track bed drainage network: detecting the resistance value between each ballast bed block and the ballast bed drainage network; d. testing the transition resistance between the steel rail and an adjacent structure: detecting whether electrical communication exists between the steel rail and an adjacent structure; e. testing the transition resistance between the ballast bed drainage network and an adjacent structure: detecting whether there is electrical communication between the ballast bed drainage network and an adjacent structure.
The invention also has the following preferable technical scheme:
The method for testing the internal resistance of the steel rail comprises the following specific steps: two connecting wires of the programmable direct current power supply are respectively connected to the steel rail to be tested through the clamping head to form a closed testing loop and test, and the actually measured average internal resistance value of the steel rail is obtained according to a plurality of testing results and is used for being compared with the design value of the internal resistance of the steel rail.
the method for testing the internal resistance of the ballast bed drainage network comprises the following specific steps: two connecting wires of the loop resistance tester are respectively connected with the two drainage terminals through the clamping heads to form a closed test loop and carry out testing, and the actually measured average internal resistance value of the drainage network of the track bed is obtained according to a plurality of test results and is used for being compared with the designed internal resistance value of the drainage network of the track bed.
The method for testing the transition resistance between the steel rail and the track bed drainage network comprises the following specific steps: two connecting wires of the insulation resistance meter are respectively connected with the drainage terminal and the steel rail through the clamping head to form a closed test loop and carry out testing, and the actually measured average transition resistance between the steel rail and the track bed drainage network is obtained according to a plurality of test results and is used for comparing with the design value and the standard requirement value of the transition resistance between the steel rail and the track bed drainage network.
The method for testing the transition resistance between the steel rail and the adjacent structure specifically comprises the following steps: and two connecting wires of the insulation resistance meter are respectively connected with the leading-out terminal of the structural reinforcing mesh and the steel rail through the clamping heads to form a closed test loop and carry out testing, and the actually measured average transition resistance value between the leading-out terminal and the steel rail is obtained according to a plurality of test results.
If the actually measured average transition resistance value between the leading-out terminal and the steel rail is smaller than a set value, whether the steel rail is electrically communicated with the adjacent structure or not, whether the insulation measure of the structure embedded rib is not set according to requirements or not, so that the embedded rib is electrically communicated with the steel rail, or whether the embedded depth of the reinforcing steel bar head of the fixed template exceeds the preset value, so that the upper structure and the lower structure are electrically communicated.
The method for testing the transition resistance between the ballast bed drainage network and the adjacent structure comprises the following specific steps: two connecting wires of the insulation resistance meter are respectively connected with the leading-out terminal of the structural reinforcing mesh and the drainage terminal of the ballast bed drainage mesh through the clamping heads to form a closed test loop and carry out testing, the actually measured average transition resistance value between the leading-out terminal and the drainage terminal is obtained according to a plurality of test results, and if the average transition resistance value is smaller than a set value, the ballast bed drainage mesh is considered to be electrically communicated with an adjacent structure.
If the actually measured average transition resistance value between the leading-out terminal and the drainage terminal is smaller than a set value, whether the electric communication exists between the drainage net of the ballast bed and a nearby structure, whether the structure embedded ribs are not set according to requirements to cause the embedded ribs to be in direct contact with the drainage net of the ballast bed, or whether the embedded depth of the reinforcing bar heads of the fixed template exceeds the limit to cause the electric communication between the upper structure and the lower structure.
the following steps are required before the test is carried out: cleaning and polishing rust at the connection part of each chuck; the electrical connection between the metal pile and the tested piece is checked and cleaned, so that the test is prevented from being influenced; and checking the insulation measure of the structure embedded rib to ensure that the structure embedded rib is insulated from the ballast bed drainage net.
And testing, checking and adjusting during the construction process until all tests are passed, and then pouring concrete into the construction section.
Compared with the prior art, the invention has the advantages that:
1. A set of complete stray current construction detection method and construction quality control measures in the construction process are provided, and the hidden danger of stray current leakage can be controlled fundamentally, reduced in a large range and a large degree;
2. Detection control can be carried out before engineering concealment, and later investigation and rectification costs are reduced;
3. A plurality of detection indexes can be synchronously detected and compared, so that the overall test data is more complete and precise, and the investigation range is more comprehensive and thorough;
4. The position of the disease can be found visually in the detection process, and the direction is indicated for the control of the stray current in the subsequent construction.
Drawings
FIG. 1 is a schematic illustration of a track bed drainage network internal resistance test, a rail internal resistance test, a transition resistance test between a rail and a track bed drainage network;
FIG. 2 is a schematic illustration of a transition resistance test between a rail and an adjacent structure, a transition resistance test between a ballast drainage grid and an adjacent structure;
As shown, in the figure: 1. the system comprises a steel rail 2, sleepers 3, a track bed drainage network 4, a track bed template 5, drainage terminals 6 of the track bed drainage network, leading-out terminals 7 of a proximity structure, a proximity structure 8, structural embedded ribs 9, a programmable direct current power supply 10, a special programmable direct current power supply connecting wire 11, a special programmable direct current power supply connecting clamp 12, an insulation resistance meter 13, a special insulation resistance meter connecting wire 14, a special insulating resistance meter connecting clamp 15, a loop resistance tester 16, a special loop resistance tester connecting wire 17 and a special loop resistance tester connecting clamp.
Detailed Description
the principles of this method will be apparent to those skilled in the art from the following further description of the invention, taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment, in the construction process of the whole track bed of the subway track, based on the track design and stray current prevention standard requirements and the existing checking and accepting test items of the stray current prevention of the subway track, after the track panel, the reinforcing steel bars and the template process are constructed and before the track bed concrete is poured, the internal resistance of the steel rail at the construction section, the internal resistance of the drainage network of the track bed, the transition resistance between the steel rail and the adjacent structure and the transition resistance between the drainage networks of the track bed are tested through instruments, the internal connection performance of the drainage network of the track bed of each track bed block, the ground resistance of the steel rail and the drainage network of the track bed and whether the insulation performance between the steel rail and the drainage network of the track bed meets the requirements or not are checked, and the requirements are rectified and tested to be qualified before the engineering is concealed.
The testing method provided by the embodiment is suitable for testing the stray current in the construction of various structural types of rails of a subway, and is explained by testing the stray current in the construction process of the whole track bed of the overhead line, and concrete pouring is carried out on a construction section while testing and adjusting in the whole construction process until the test is passed. The construction method of the track bed steel bar, the template and the concrete in the subway track-laying integral track bed construction is consistent with the construction method of a common section.
Firstly, because the instrument for testing the stray current has high sensitivity, relevant influence factors need to be eliminated in the testing process, and therefore the following steps are carried out before testing: firstly, rust at each connecting part is cleaned and polished, effective contact of a test line is ensured, and a measurement error is reduced; checking and cleaning the electrical connection between the metal work piles (steel templates, rail adjusting supports, binding wires and the like) and the tested piece, and avoiding other factors from influencing the measured value; checking the insulation measure of the structure embedded rib to ensure that the structure embedded rib is insulated from the ballast bed drainage net.
The method for testing the internal resistance of the steel rail comprises the steps of detecting and calculating the internal resistance value of the steel rail of the inner track bed plate in the construction section of the day by using a programmable direct-current power supply, comparing the internal resistance value with a designed value of the internal resistance of the steel rail in unit length (such as 29.11 multiplied by 10 -3 omega/Km of the 60 kg steel rail), checking whether the steel rail in the construction section of the day is connected with external metal or not according to a comparison result, and timely arranging workers to clean the steel rail until the test is passed.
The method for testing the internal resistance of the ballast bed drainage network is characterized in that drainage terminals are respectively arranged at four corners of the ballast bed drainage network of each ballast bed block, namely, a loop resistance tester is used for detecting the resistance value between the drainage terminals at two ends, positioned at the same side, of each ballast bed block in a construction section, so as to judge whether the connection conductivity in the ballast bed drainage network meets the requirement, and if the tested numerical value is overlarge, the welding quality of the ballast bed drainage network and the drainage terminals is judged and improved until the test is passed.
The method for testing the transition resistance between the steel rail and the ballast bed drainage network is characterized in that an insulation resistance meter is used for detecting the resistance value between each ballast bed block steel rail and the ballast bed drainage network in a construction section and comparing the resistance value with a design and standard required value, wherein the design value of the transition resistance between the steel rail and the ballast bed drainage network can be calculated according to the arrangement form of longitudinal reinforcements of the ballast bed drainage network in a design drawing (the reference value of the drainage network resistance is 1.44 multiplied by 10 -4 omega/m), so that whether a fastener rubber part is damaged or not, whether the assembly is correct or not and whether a metal part is connected between the steel rail and the drainage network or not are checked according to a comparison result until the test is passed.
The method for testing the transition resistance between the steel rail or the track bed drainage network and the adjacent structure is characterized in that an insulation resistance meter is used for detecting the resistance value between each track bed drainage network and a lead-out terminal reserved for the adjacent structure (a tunnel and an elevated bridge deck foundation) in a construction section, whether the track bed drainage network is electrically communicated with the adjacent structure is checked, whether the embedded rib insulating sleeve of the structure is installed according to requirements or not to cause the direct contact of the embedded rib and the drainage network is checked when the test value exceeds the limit, or whether the embedded rib head of a fixed template is implanted with the depth exceeding the limit to cause the electrical communication is checked, and the test is repeated until the embedded rib head passes the test.
Furthermore, the embodiment also provides a construction control measure for the stray current, namely, the overhead line bridge deck embedded bars are all firmly sleeved by insulating sleeves with the insulation resistance not less than 1 multiplied by 1010 omega, the insulating clamps are additionally arranged at the positions where the roadbed reinforcing bars are in contact with the embedded bars, the releasing force of the insulating clamps is not less than 25N, and the hidden danger of stray current leakage caused by the fact that the bridge deck embedded bars are in contact with a roadbed drainage net is eliminated; the minimum distance between the pre-buried metal rail passing pipeline and the steel rail is larger than 70mm, and the contact position of the rail passing pipeline and the track bed steel bar is firmly bound by adopting an insulating sleeve and an insulating clamp.
Example 1
Referring to fig. 1, the method for testing the internal resistance of the steel rail specifically comprises the following steps: polishing and derusting a steel rail test connection position in a construction section to ensure that a test loop is in good contact, connecting a polishing completion position of a steel rail to be tested by using a special connection chuck of a programmable direct-current power supply to form a closed test loop, starting the programmable direct-current power supply to start testing, recording five times of data to obtain a steel rail resistance average value R with the length of Lside 1Using measured value RSide 1And comparing with a design value, if the error is within an allowable range, passing the measurement of the next measurement point until the measurement is completely finished in the construction section, and if the error exceeds the limit, checking whether the steel rail in the test section is connected with an unsatisfactory metal piece or not and finishing the correction.
Example 2
Referring to fig. 1, the method for testing the internal resistance of the ballast bed drainage network specifically comprises the following steps: cleaning the drainage terminal of the track bed plate to be tested, checking the abnormal metal connection of the drainage network, and modifying to ensure the accuracy of the test value, and using a loop circuitThe special connecting clamp of the resistance tester is connected with two drainage terminals of the track bed plate to be tested to form a closed test loop, the loop resistance tester is started to start testing, and the data is recorded for five times to obtain the actual measurement average value RSide 2Using the measured value RSide 2And comparing the resistance value with the longitudinal resistance value of the drainage network of the ballast bed in the design drawing, if the error is within the allowable range, passing and continuing to test the next plate until all the plates in the construction section are tested, and if the resistance value is overlarge, checking whether the stray current welding of the drainage network of the ballast bed meets the design requirement and finishing rectification.
Example 3
Referring to fig. 1, the method for testing the transition resistance between the steel rail and the track bed drainage network comprises the steps of firstly, selecting any position of the steel rail above a test plate for polishing and derusting, cleaning a drainage terminal of the track bed plate to be tested by using abrasive paper, checking whether the track bed drainage network is in metal connection with the steel rail and rectifying the metal connection to ensure the accuracy of a test value, respectively connecting the polished position of the steel rail and the drainage terminal led out by the track bed drainage network with the cleaned track bed block by using a special connecting line chuck of an insulation resistance meter to form a test closed loop, starting the insulation resistance meter to test, recording five times of data to obtain an actual measurement average value, and converting the actual measurement value into a value R of each single line kilometerSide 3，RSide 3And (4) not less than 15 omega and km, passing the test of the next plate when the test is qualified until all the plates in the construction section are tested, and checking whether a fastener rubber part is damaged or not and whether the assembly is correct or not and whether a metal part is connected between the steel rail and the track bed drainage net or not and finishing the rectification until the test passes the test and then measuring the next plate when the resistance value is too small.
Example 4
Referring to fig. 2, the method for testing the transition resistance between the steel rail and the adjacent structure specifically comprises the following steps: selecting any position of a steel rail above the leading-out terminal part of the structural steel bar mesh, polishing and derusting, cleaning the leading-out terminal of the structural steel bar mesh to be tested by abrasive paper, checking whether metal connection exists between a proximity structure and the steel rail or not and rectifying to ensure the accuracy of a test value, and cleaning by using a special connection chuck of an insulation resistance meterThe leading-out terminal of the structural reinforcing mesh and the position of the steel rail where rust removal is finished form a test closed loop, five times of data are recorded to obtain an actual measurement average value, and the actual measurement value is converted into a single-line per-kilometer value Rside 4，RSide 4And (2) not less than 15 omega.km, if the test is qualified, the leading-out terminal of the next structure is continuously tested until the test is completely finished in the construction section, if the resistance value is too small, whether the electric communication exists between the steel rail and the adjacent structure or not is checked, whether the electric communication exists between the structure embedded bar and the steel rail is not set according to the requirement or not is checked, whether the embedded depth of the steel bar head of the fixed template exceeds the limit or not is checked, and the test is repeatedly carried out until all the leading-out terminals of the structure in the construction section pass the test.
Example 5
Referring to fig. 2, the method for testing the transition resistance between the ballast bed drainage network and the adjacent structure specifically comprises the following steps: cleaning the leading-out terminal of the steel bar mesh of the structure to be tested and the drainage terminal led out by the track bed drainage mesh by using abrasive paper, checking whether metal connection exists between the adjacent structure and the track bed drainage mesh and rectifying the metal connection to ensure the accuracy of a test value, connecting the leading-out terminal of the cleaned steel bar mesh of the structure and the drainage terminal led out by the track bed drainage mesh by using a special connecting chuck of an insulation resistance meter to form a test closed loop, recording five times of data to obtain an actual measurement average value, converting the actual measurement value into a single-wire per-kilometer value Rsurvey, and converting the R survey into a single-wire per-kilometer value by usingSide 5And (2) not less than 15 omega.km, if the test is qualified, continuously testing the leading-out terminal of the next structure until the leading-out terminal of the structure in the construction section is completely tested, if the resistance value is too small, checking whether the electric communication exists between the drainage net of the ballast bed and the adjacent structure, whether the pre-embedded ribs of the structure are not arranged according to requirements to cause the direct contact of the pre-embedded ribs and the drainage net of the ballast bed, or whether the electric communication between the upper structure and the lower structure is caused by the fact that the embedding depth of the reinforcing bar heads of the fixed template is over the limit, and re-testing until the leading-out terminal of the structure in the construction section is completely.
Claims (10)
1. A stray current prevention testing method for the construction of a subway integral ballast bed is characterized in that the following tests are carried out in any item during the construction process before the concrete pouring of the ballast bed:
Testing the internal resistance of the steel rail: detecting the internal resistance value of the steel rail, and comparing the internal resistance value with the designed internal resistance value of the steel rail in unit length;
Testing the internal resistance of the ballast bed drainage network: detecting the resistance value between drainage terminals at two ends of the same side on the track bed drainage network of each track bed block;
Testing the transition resistance between the steel rail and the track bed drainage network: detecting the resistance value between each ballast bed block and the ballast bed drainage network;
Testing the transition resistance between the steel rail and an adjacent structure: detecting whether electrical communication exists between the steel rail and an adjacent structure;
Testing the transition resistance between the ballast bed drainage network and an adjacent structure: detecting whether there is electrical communication between the ballast bed drainage network and an adjacent structure.
2. The method for testing the stray current prevention in the construction of the subway integrated track bed as claimed in claim 1, wherein the method for testing the internal resistance of the steel rail comprises the following steps: two connecting wires of the programmable direct current power supply are respectively connected to the steel rail to be tested through the clamping head to form a closed testing loop and test, and the actually measured average internal resistance value of the steel rail is obtained according to a plurality of testing results and is used for being compared with the design value of the internal resistance of the steel rail.
3. The method for testing the stray current prevention in the construction of the integral subway ballast bed as claimed in claim 1, wherein the method for testing the internal resistance of the ballast bed drainage network comprises the following steps: two connecting wires of the loop resistance tester are respectively connected with the two drainage terminals through the clamping heads to form a closed test loop and carry out testing, and the actually measured average internal resistance value of the drainage network of the track bed is obtained according to a plurality of test results and is used for being compared with the designed internal resistance value of the drainage network of the track bed.
4. The method for testing the stray current prevention in the construction of the subway integrated track bed as claimed in claim 1, wherein the method for testing the transition resistance between the steel rail and the track bed drainage network comprises the following steps: two connecting wires of the insulation resistance meter are respectively connected with the drainage terminal and the steel rail through the clamping head to form a closed test loop and carry out testing, and the actually measured average transition resistance between the steel rail and the track bed drainage network is obtained according to a plurality of test results and is used for comparing with the design value and the standard requirement value of the transition resistance between the steel rail and the track bed drainage network.
5. The method for testing the stray current prevention in the construction of the subway integrated track bed as claimed in claim 1, wherein the method for testing the transition resistance between the steel rail and the adjacent structure is as follows: and two connecting wires of the insulation resistance meter are respectively connected with the leading-out terminal of the structural reinforcing mesh and the steel rail through the clamping heads to form a closed test loop and carry out testing, and the actually measured average transition resistance value between the leading-out terminal and the steel rail is obtained according to a plurality of test results.
6. The method for testing the stray current prevention in the construction of the subway integrated roadbed according to claim 5, wherein if the actually measured average transition resistance value between the leading-out terminal and the steel rail is smaller than a set value, whether the steel rail is electrically communicated with an adjacent structure or not, whether the insulation measure of the structure embedded ribs is not set as required or not is checked, so that the embedded ribs are electrically communicated with the steel rail, or whether the embedded depth of the reinforcing steel bar heads of the fixed template is over-limit so that the upper structure and the lower structure are electrically communicated.
7. The method for testing the stray current prevention in the construction of the monolithic subway ballast bed as claimed in claim 1, wherein the method for testing the transition resistance between the drainage network and the adjacent structure of the ballast bed is as follows: two connecting wires of the insulation resistance meter are respectively connected with the leading-out terminal of the structural reinforcing mesh and the drainage terminal of the ballast bed drainage mesh through the clamping heads to form a closed test loop and carry out testing, the actually measured average transition resistance value between the leading-out terminal and the drainage terminal is obtained according to a plurality of test results, and if the average transition resistance value is smaller than a set value, the ballast bed drainage mesh is considered to be electrically communicated with an adjacent structure.
8. The method for testing stray current prevention in the construction of the integrated subway ballast bed as claimed in claim 7, wherein if the actually measured average transition resistance between the leading-out terminal and the drainage terminal is smaller than a set value, it is checked whether the drainage network of the ballast bed is in electrical communication with the adjacent structure, whether the pre-buried ribs of the structure are not set as required and the pre-buried ribs are in direct contact with the drainage network of the ballast bed, or whether the steel bar head implantation depth of the fixed formwork exceeds the limit and the upper and lower structures are in electrical communication.
9. The method for testing the stray current prevention of the construction of the subway integrated track bed as claimed in any one of claims 1-8, wherein the following steps are required before the test is carried out: cleaning and polishing rust at the connection part of each chuck; the electrical connection between the metal pile and the tested piece is checked and cleaned, so that the test is prevented from being influenced; and checking the insulation measure of the structure embedded rib to ensure that the structure embedded rib is insulated from the ballast bed drainage net.
10. The method for testing the stray current prevention during the construction of the subway integral ballast bed as claimed in any one of claims 1 to 8, wherein during the construction process, the examination and the adjustment are carried out while testing until all tests are passed, and then the concrete pouring is carried out on the construction section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692679.8A CN110554238B (en) | 2019-07-30 | 2019-07-30 | Stray current prevention test method for whole ballast bed construction of subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692679.8A CN110554238B (en) | 2019-07-30 | 2019-07-30 | Stray current prevention test method for whole ballast bed construction of subway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110554238A true CN110554238A (en) | 2019-12-10 |
| CN110554238B CN110554238B (en) | 2023-11-24 |
Family
ID=68736705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910692679.8A Active CN110554238B (en) | 2019-07-30 | 2019-07-30 | Stray current prevention test method for whole ballast bed construction of subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110554238B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812381A (en) * | 2020-06-30 | 2020-10-23 | 广州地铁设计研究院股份有限公司 | System and method for testing stray current of subway |
| CN112379301A (en) * | 2020-09-15 | 2021-02-19 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309574Y (en) * | 1997-08-12 | 1999-03-03 | 中国科学院金属腐蚀与防护研究所 | Portable intelligent stray current measuring instrument |
| EP1455181A1 (en) * | 2003-02-14 | 2004-09-08 | Alcan Technology & Management Ltd. | Non-destructive testing of composite conductor rails |
| CN101226682A (en) * | 2007-01-19 | 2008-07-23 | 同济大学 | Device for monitoring stray current of novel subway |
| CN101985285A (en) * | 2010-10-22 | 2011-03-16 | 广州地铁设计研究院有限公司 | Direct-current (DC) 1500V four-rail mounting structure applied to urban rail transit |
| CN206583976U (en) * | 2017-03-09 | 2017-10-24 | 成都瑞尔维轨道交通技术有限公司 | Rail transition resistance detecting system and rail travel traffic system |
| CN107761484A (en) * | 2017-09-16 | 2018-03-06 | 中铁十九局集团第二工程有限公司 | A kind of construction method protected Stray Current in Urban Rail Transit |
| CN107976583A (en) * | 2017-11-23 | 2018-05-01 | 上海远彭电气技术咨询服务有限公司 | A kind of urban track traffic rail ground transition resistance automatic testing equipment and method |
| CN108169569A (en) * | 2018-02-08 | 2018-06-15 | 西南交通大学 | A kind of rail monitors system and its control method to drainage net transition resistance |
| CN109256771A (en) * | 2018-10-16 | 2019-01-22 | 国网湖南省电力有限公司 | Metro stray current and its caused transformer neutral point DC current calculation method |
| CN109470927A (en) * | 2018-11-26 | 2019-03-15 | 中铁第四勘察设计院集团有限公司 | Rail traffic rail transition resistance detection system and method |
-
2019
- 2019-07-30 CN CN201910692679.8A patent/CN110554238B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309574Y (en) * | 1997-08-12 | 1999-03-03 | 中国科学院金属腐蚀与防护研究所 | Portable intelligent stray current measuring instrument |
| EP1455181A1 (en) * | 2003-02-14 | 2004-09-08 | Alcan Technology & Management Ltd. | Non-destructive testing of composite conductor rails |
| CN101226682A (en) * | 2007-01-19 | 2008-07-23 | 同济大学 | Device for monitoring stray current of novel subway |
| CN101985285A (en) * | 2010-10-22 | 2011-03-16 | 广州地铁设计研究院有限公司 | Direct-current (DC) 1500V four-rail mounting structure applied to urban rail transit |
| CN206583976U (en) * | 2017-03-09 | 2017-10-24 | 成都瑞尔维轨道交通技术有限公司 | Rail transition resistance detecting system and rail travel traffic system |
| CN107761484A (en) * | 2017-09-16 | 2018-03-06 | 中铁十九局集团第二工程有限公司 | A kind of construction method protected Stray Current in Urban Rail Transit |
| CN107976583A (en) * | 2017-11-23 | 2018-05-01 | 上海远彭电气技术咨询服务有限公司 | A kind of urban track traffic rail ground transition resistance automatic testing equipment and method |
| CN108169569A (en) * | 2018-02-08 | 2018-06-15 | 西南交通大学 | A kind of rail monitors system and its control method to drainage net transition resistance |
| CN109256771A (en) * | 2018-10-16 | 2019-01-22 | 国网湖南省电力有限公司 | Metro stray current and its caused transformer neutral point DC current calculation method |
| CN109470927A (en) * | 2018-11-26 | 2019-03-15 | 中铁第四勘察设计院集团有限公司 | Rail traffic rail transition resistance detection system and method |
Non-Patent Citations (2)
| Title |
|---|
| 邓琴: "地铁排流网系统的设计研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 邓琴: "地铁排流网系统的设计研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》, no. 10, 15 October 2012 (2012-10-15), pages 1 - 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812381A (en) * | 2020-06-30 | 2020-10-23 | 广州地铁设计研究院股份有限公司 | System and method for testing stray current of subway |
| CN112379301A (en) * | 2020-09-15 | 2021-02-19 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
| CN112379301B (en) * | 2020-09-15 | 2023-09-05 | 中国测试技术研究院机械研究所 | Track stray current and transition resistance online monitoring method and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110554238B (en) | 2023-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110554238B (en) | Stray current prevention test method for whole ballast bed construction of subway | |
| US20150362423A1 (en) | Method and equipment for identifying and measuring alternating current interference in buried ducts | |
| AU2006274334B2 (en) | Method and device for monitoring and detecting the coating defects of an underground or underwater pipeline | |
| CN105021953B (en) | Grounding net of transformer substation corrosion detection system and method based on earth's surface magnetic induction intensity | |
| JP2023081545A (en) | Ground resistance deterioration position estimation device and method of the same | |
| CN203785700U (en) | Oversized concrete floor construction period temperature and contraction monitoring device | |
| CN111041912A (en) | Double-block ballastless track retesting method and system | |
| CN110174593B (en) | Device and method for judging breakpoint position of grounding grid by adopting electromagnetic induction | |
| CN111041911B (en) | Method for testing resistance of steel bar of railway ballastless track bed | |
| KR20110053714A (en) | How to measure wear and straightness of rail using depth gauge | |
| Bongiorno et al. | Track insulation verification and measurement | |
| Vranešić et al. | Detrimental effect of stray current on rails and fastening systems in urban railway tracks | |
| CN214225265U (en) | Stray current testing system for subway | |
| CN205120306U (en) | Cable -stay bridge cable is calibration device for stress test effectively in advance | |
| CN208937678U (en) | III type non-fragment orbit board finished product insulating detection equipment of CRTS | |
| JP5086287B2 (en) | Soundness measurement evaluation method of plastic coating in buried metal pipeline | |
| CN210347542U (en) | Multistation rail eddy current testing equipment | |
| CN101738421A (en) | Method for testing assembling quality of cathode carbon block of electrolytic bath and test fixture | |
| CN111812381A (en) | System and method for testing stray current of subway | |
| CN111730225A (en) | Large-scale recovery air conditioner assembly installation method | |
| RU2263333C2 (en) | Method for detection of disruptions of insulating cover of underground pipeline | |
| Memon et al. | Stray Current Mitigation and Collection Techniques Adopted by a DC Transit Agency and Its Effectiveness in Controlling Stray Currents | |
| CN110174594B (en) | Device and method for judging breakpoint position of grounding grid | |
| RU2750137C1 (en) | Method for remote measurement of train shunt resistance and device for its implementation | |
| Mariscotti | Methods and instruments for stray current verification in DC rapid transit and railway systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |