TB/T 2818-2016 in English
VALIDRailway roadbed disease classification
- Issued on:2016-08-16
- Implemented on:2017-02-16
- File Format:PDF
- Delivery:Via email within 1~3 business days
$185.00
| Standard No: | TB/T 2818-2016 |
| Document status: | VALID |
| Title in English: | Railway roadbed disease classification |
| Title in Chinese: | 铁路路基病害分类 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-08-16 |
| Implemented on: | 2017-02-16 |
| Superseding: |
TB/T 2818-1997 Classification and Assessment for Damage of Railway Subgrade
|
| Professional Classification: | TB-Railway Transport |
| Related Keywords: | roadbed disease classification introduction background
edition disease disease elimination rate core disease types classes structural diseases basic classification detailed support/protection system analysis |
| Related Topics: | tb/t 1961-2016
tb/t3441-2016 tb/t3367-2016 tb/t2993.5-2016 disease subgrade Lulu tb/t3440-2016 Railway bird related tb/t 3466-2016 tb/t 3432-2016 |
Introduction
Background of Standard Revision and Technological Evolution
TB/T 2818-2016 replaces the 1997 version of the standard, mainly adding subcategories such as frost damage to retaining structures and artificial caves, and strengthening the classification of composite foundation diseases. The revision reflects three major technological advances:
| Dimensions | 1997 Edition | 2016 Edition |
|---|---|---|
| Disease Subclasses | 32 Classes | 42 Classes |
| Special Geology | 4 Classes | 7 Classes |
| Structural Diseases | Basic Classification | Detailed Support/Protection System |
Analysis of Core Disease Types
3.1 Mud and Boreholes
It is divided into four subcategories: soil base, weathered stone base, fissure springs, and graded gravel base. Typical characteristics:
- Soil subgrade: mud consistency> 12 plasticity index, columnar spurting at the sleeper end
- Graded gravel: the edge of the supporting layer starts to erupt, and the mud is thin
3.2 Subsidence disease
New Composite foundation degassing subclass, main characteristics comparison:
| Type | Development speed | Handling difficulties |
|---|---|---|
| Road foundation body | Annual settlement ≤50mm | Filling material improvement |
| Composite foundation | Suddenness | Pile detection |
Implementation suggestions
- Frost damage prevention and control: EPS insulation layer + anti-seepage membrane combination is recommended in Northeast China
- Monitoring focus: Distributed fiber optic sensors need to be deployed in composite foundation sections
- Emergency treatment: Temporary consolidation of polymer materials is preferred for mud bubbling
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