TB/T 1853-2018 in English
VALIDSteel bearings for railway bridge
- Issued on:2018-07-31
- Implemented on:2019-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
$485.00
| Standard No: | TB/T 1853-2018 |
| Document status: | VALID |
| Title in English: | Steel bearings for railway bridge |
| Title in Chinese: | 铁路桥梁钢支座 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-07-31 |
| Implemented on: | 2019-02-01 |
| Superseding: |
TB/T 1853-2006 Technical specification of steel bearings for railway bridge
|
| Professional Classification: | TB-Railway Transport |
| Related Keywords: | steel bearings
changes bearing type cold-resistant bearings bearing capacity stainless steel plate |
| Related Topics: | Zhou Gangqiao
bridge road bridge bridge beam China Railway China Railway half bridge circuit Railway Bridge Ball Bearings bridge support reaction railway bridge TB/T 3474.2-2018 bridge steel group bridge bearing Railway bridge acceptance Railway bridge anti-fall beam EU Railway Bridge Design tb/t3539-2018 |
Introduction
Core changes in the standard revision
| Technical dimension | 2006 version | 2018 version | Impact of changes |
|---|---|---|---|
| Bearing type | 4 types | Added hyperboloid bearing | Expanded applicability of large displacement bridges |
| Bearing capacity classification | Maximum 60,000kN | Expanded to 100,000kN | Meet the needs of heavy-duty railways |
| Friction material | Polytetrafluoroethylene | Newly modified ultra-high molecular polyethylene | Linear wear rate reduced by 40% |
Key performance indicators
Bearing capacity and deformation
Vertical design bearing capacity is divided into 35 levels (1,000-100,000kN), compression deformation requirements:
- Height ≤200mm: ≤2.00mm
- Height＞200mm: ≤1% height and ≤4.00mm
Friction performance
Friction coefficient requirements under silicone grease lubrication conditions:
- Normal temperature type (-25~60℃): μ≤0.030
- Cold-resistant type (-40~-25℃): μ≤0.050
Material technical requirements
Typical case: Hyperboloid bearing material configuration
A Yangtze River Bridge project uses TGZ-SQMZ 45000DX bearings:
- Upper bearing plate: ZG270-500 steel casting
- Skateboard: modified ultra-high molecular polyethylene (density 0.95g/cm³)
- Stainless steel plate: 06Cr19Ni13Mo3 mirror treatment
Inspection rule innovation
2018 version strengthens the whole process quality control:
- Raw material inspection: Added interlayer bonding strength test of SF-1B three-layer composite board
- Factory inspection: Friction coefficient test frequency increased by 50%
- Type inspection: Added verification of extreme temperature conditions
Implementation suggestions
For application during the standard transition period:
- For reconstruction of existing lines, priority should be given to modified ultra-high molecular weight polyethylene skateboards
- In high-cold areas, pay attention to the F mark verification of cold-resistant bearings
- For long-span bridges, it is recommended to conduct a prototype test of 1.5 times the bearing capacity
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