GB/T 920-2023 in English
VALIDCode for highway pavement classification and type
- Issued on:2023-03-17
- Implemented on:2023-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$185.00
| Standard No: | GB/T 920-2023 |
| Document status: | VALID |
| Title in English: | Code for highway pavement classification and type |
| Title in Chinese: | 公路路面等级与面层类型代码 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2023-03-17 |
| Implemented on: | 2023-10-01 |
| Superseding: |
GB/T 920-2002 Code for classification and type of highway pavement
|
| ICS Classification: | 35.040-Character sets and information coding |
| Chinese Classification: | A24-Codification |
| Professional Classification: | GB-National Standard |
| Related Keywords: | highway pavement classification
edition grade classification six-level classification highway pavement information highway pavement grades line classification method |
| Related Topics: | Isotherm type
Isotherm type Class surface advanced surface GBT920 GB/T920-2002 |
《GB/T 920-2023公路路面等级与面层类型代码》由TC223（全国交通工程设施（公路）标准化技术委员会）归口，主管部门为国家标准委。
Introduction
1. Background and significance of standard formulation
GB/T 920-2023 is a comprehensive revision of the original GB/T 920-2002, mainly optimizing the classification principles and coding methods of highway pavement grades and surface layer types. The release of this standard aims to unify the processing and exchange of highway pavement information across the country and improve the standardization level of highway engineering construction.
2. Analysis of technological evolution
Compared with GB/T 920-2002, the main technical changes of the new standard include:
- Supplementary terms and definitions: Detailed definitions of terms such as "pavement", "surface layer", and "asphalt concrete surface layer" have been added.
- Grade classification adjustment: Further clarify the technical grade classification of highways, covering expressways, first-class highways to substandard highways.
- Coding structure optimization: The line classification method is adopted, and the code structure is clearer, which is convenient for information processing and exchange.
3. Comparison table of standard frameworks
| Dimensions | 2002 Edition | 2023 Edition |
|---|---|---|
| Grade classification | Six-level classification (expressway to substandard highway) | Further refinement, new specific implementation requirements |
| Surface layer type | Seven categories (asphalt concrete, cement concrete, etc.) | Clearer classification, new "other surface layer" category |
| Coding method | Line classification method, fixed code structure | Optimize to tree structure, support expansion |
4. Implementation suggestions and application cases
Implementation suggestions:
- Strengthen the promotion of standards to ensure that relevant personnel are familiar with the content of the new version.
- Develop specific implementation rules and transition plans based on actual conditions.
- Establish a unified database of pavement grades and surface types to support information management.
Application case:
A highway project uses asphalt concrete surface (code LM1010), which meets the requirements of the new standard. Through standardized coding and information exchange, the project management level has been significantly improved.
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