GB146.1-2020

Gauge for standard gauge railways—Part 1: rolling stock gauge

标准轨距铁路限界第1部分：机车车辆限界

GB 146.1-2020 est une norme nationale chinoise obligatoire en vigueur : Gauge for standard gauge railways—Part 1: rolling stock gauge. Secteur : Automobile. Thème principal : Sécurité des produits. Entrée en vigueur : 1 mai 2021.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

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Champ d’application

This standard specifies the rolling stock gauge for 1435mm standard gauge railways. It is applicable to the design, manufacturing, and operation of standard gauge locomotives, passenger cars, freight wagons, and Electric Multiple Units (EMUs). It is mandatory for all rolling stock intended for operation on China's standard gauge railway network.

Exigences techniques

The standard defines the limiting cross-sectional contour that restricts the physical dimensions of rolling stock. It divides the gauge into an upper gauge (above 350mm from the rail surface) and a lower gauge (350mm and below). The upper gauge includes specific contours for basic rolling stock, electrified railways, passenger dedicated line EMUs, and train signaling devices. Manufacturers must ensure that both empty and loaded vehicles, whether new with maximum tolerances or old with maximum wear, remain strictly within these contours. For the maximum allowable width, the standard establishes a basic calculation vehicle with a body length of 26m and a bogie center distance of 18m, setting a maximum allowable width of 3400mm. If a vehicle's dimensions exceed these reference parameters, the allowable width must be mathematically reduced. The standard provides specific formulas to calculate the geometric offset and corresponding width reduction to ensure safe clearance on curves with a radius of 300m. Regarding vertical dimensions, the lower contour design must account for static spring deflection under load and maximum wear. Specific lower gauge limits apply to vehicles passing through hump retarders. Furthermore, the standard mandates that designers must guarantee a safe distance between the rolling stock and trackside structures such as platforms, preventing any interference during normal operation.

Méthodes d’essai

Compliance is primarily evaluated through geometric and mathematical calculations rather than physical destructive testing. Engineers must use the provided formulas to calculate the mid-body and end-body lateral offsets on a standard 300m radius curve. The evaluation involves comparing the vehicle's designed manufacturing half-width against the maximum allowable half-width at specific heights from the rail surface, ensuring it does not exceed the limiting cross-sectional contour.

Questions fréquentes

What products are regulated under GB 146.1-2020?

It applies to standard gauge (1435mm) railway rolling stock, including locomotives, freight cars, passenger cars, and Electric Multiple Units (EMUs) operating on dedicated passenger lines.

Are there any major updates from the previous GB 146.1-1983 version?

The 2020 version introduces normative references, modifies the definition of the rolling stock gauge, adds requirements for safe operation during contour design, and includes a specific gauge contour for passenger dedicated line EMUs.

How does GB 146.1-2020 relate to the building clearance standard?

It is closely coordinated with GB 146.2-2020 (Building gauge). The standard provides specific mathematical formulas to calculate width reductions based on a vehicle's body length and bogie center distance, ensuring safe clearance in curves.

The summary above provides a high-level overview of GB 146.1-2020. To ensure complete compliance for your rolling stock entering the Chinese railway network, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 146.1-2020 today to access all detailed contour parameters, mathematical formulas, and testing procedures.

Indications d’applicabilité

Type: Norme de base
CCS: s04
ICS: 45.060.01
Autorité compétente: National Railway Administration
Comité technique: National Railway Administration

Relations

Remplace:GB 146.1-1983