GB/T 39559.4-2020Specifications for operational monitoring of urban rail transit facilities—Part 4: Track and earthworks (English PDF)

1 Scope

This part of GB/T 39559 specifies the basic requirements, inspection, monitoring and status of urban rail transit track and subgrade operation monitoring technology:

Requirements and methods of state evaluation:

This part is applicable to the operation inspection, monitoring and status evaluation of urban rail transit tracks and subgrade facilities:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 39559:1-2020 Technical Specification for Operation Monitoring of Urban Rail Transit Facilities Part 1: General Provisions

GB 50911 Technical Code for Urban Rail Transit Engineering Monitoring

CJJ/T 202 Technical Specification for Safety Protection of Urban Rail Transit Structure

3 Terms and definitions

The following terms and definitions defined in GB/T 39559:1-2020 apply to this document:

3:1

Track

The part of the line above the underground structure such as subgrade, bridge, tunnel, etc:, consists of steel rails and accessories, sleepers and

It consists of forks and rail expansion adjusters:

[TB10082-2017, Term 2:0:1]

3:2

Subgrade earthworks

A geostructure that directly supports the track structure formed by excavation and filling:

[TB10001-2016, Term 2:1:1]

4 Basic requirements

4:1 The daily inspection, regular inspection and special inspection of the track and subgrade should fill in the inspection record form, organize and analyze the inspection data, and propose the following

One-step work suggestion, special inspection should form inspection report:

4:2 Track and roadbed operation monitoring should establish a measurement reference network, and regularly retest:

4:3 The evaluation of the condition of the track and subgrade shall provide maintenance and repair suggestions:

4:4 After the initial operation, the operating unit should establish track and subgrade technical files in a timely manner, and the construction unit should transfer the track and subgrade to the operating unit:

Subgrade related survey, design, construction, inspection, monitoring, acceptance and other materials:

4:5 The track and subgrade operation inspection and monitoring data should be included in the technical files in a timely manner, and the track and subgrade life cycle database should be established to record

Record the life cycle information of the track and subgrade, carry out the analysis of the degradation law of the track and subgrade, failure prediction and health management: