Page 19 - 捷運技術 第35期

捷運技術半年刊 第 35 期 95 年 8 月 11

高運量電聯車車體材質及其結構設計

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吳銘章 陳虞仁

摘要

電聯車車體結構除了本身要承受乘客的重量外，還要負擔所有裝置於車輛上的設備重
量，因此在進行車體結構設計時就得將所有的負載因素考慮進來。當然首先必需決定所使用
之材料為何，然後再對如底架、車頂、左右側壁及前後面板等各主要組件進行設計。當完成
初步設計後使用有限元素分析模擬結構受力狀況，是否於應力容許範圍內。接著對首部原型
車進行應力測試，並比對測試後之應力與先前模擬所得應力。另為確保車體的水密性，每部
量產車於出廠之前均要進行嚴格的水密測試。

本文將就台北捷運高運量電聯車的結構組件、材料、結構強度及車體測試做一說明。使
一般大眾對車體結構有進一步的了解，同時也對臺北捷運電聯車更加有信心。

關鍵詞：應力、有限元素、抗撞

The Material and Structure Design of Carbody

of MRT Electrical Multiple Units

Ming-Chang Wu Y. Z. Chen
Abstract

The carbody structure of Electrical Multiple Unit vehicles shall be not only capable of
withstanding total passenger weight but also the weight of all the equipment installed on the vehicle.
During the design stage, the entire load factor for the structure should be considered. First of all,
the material of the carbody structure should be decided. Secondly the main structure assembly,
such as underframe, roof, sidewall and end-wall will be designed. After the primary design has
been completed, Finite Element analysis will be used for simulating stress distribution on the
carbody structure, showing whether the assembly’s ability to withstand stress is within permissible
limits or not. Subsequently, several types of carbody strength tests are performed on a prototype
car, and comparisons of the stress values between the test results and Finite Element analysis are
carried out. Furthermore, to ensure water-tightness, severe water-tightness tests for every single
car will be carried out before delivery.

The content of this article includes the description of the assembly of carbody structures,
carbody materials, structure strength and carbody strength tests. The purpose of this article is to
provide the public with a better recognition of the design of carbody structure and to increase
confidence in Taipei MRT Electrical Multiple Units.

Key Words：stress, finite element, crashworthiness

1. 臺北市政府捷運工程局機電系統設計處副工程司 10879@trts.dorts.gov.tw
2. 臺北市政府捷運工程局機電系統設計處助理工程員 10675@trts.dorts.gov.tw