铁路运输LNG罐式集装箱强度评估研究

打开文本图片集

中图分类号：U294.3 文献标志码：B doi：10.20214/j.cnki.zhgdjt.2025.06.0

itudy on Strength Assessment of Tank Containers for LNG Railway Transportation

GENG Ping， ZHAI Pengjun，BAI Congkai，DAI Luping（CRRC ShandongLocomotive&Rolling Stock Co.，Ltd.，Jinan 250o22，China）

Abstract：This paper elaborates on the development trends of liquefied natural gas （LNG）tank container transportation under the context of China’s“Dual Carbon”policy，and introduces the current application status and standardization of LNG tank containers in road，waterway，and railway transport systems. Given that there is currently no standard specification for railway LNG tank containers in China，this study suggests critical technical criteria for strength assessment，such as shell thickness，tank structural strength，and frame strength，in accordance with the standards for road and waterway LNG tank containers. Additionally，it proposes issues that should be paid attention to.Taking the minimum thicknessof the inner vessel cylinder as an example，this paper elaborates on the evaluation process for calculating the shellthickness of railway LNG tank containers. Using a specific LNG tank container model as a case study，it introduces the computational load cases，application of inertial loads，and the methodology for stress result assessment. The study summarizes the strength evaluation of the container’s frame，frame connection points，and tank body， providing critical references and a technical basis for enhancing the structural integrity and safety of railway LNG tank containers.

KeyWords：railway transportation；LNG tank container；standard application；tank thickness；tank strength；frame strength

近年来，在我国“双碳”政策的历史背景下，液化天然气（liquefiednaturalgas，LNG）以其高效、清洁、环保的特点，在常规用途中的需求量不断增加，开发程度也在不断扩大。（剩余7656字）