Page 22 - 消防月刊-102年6月號

以力學觀點探討

消防車輛出勤轉彎之穩定性 （上）

Discussion of the On-Duty Fire Engines’ Stability When Taking a Turn
Based on the Point of View of Mechanics ( Part I )

圖 / 文 屏東縣政府消防局 胡淞銀 1
屏東科技大學土木工程研究所 鍾文貴 2
摘要：

消防人員駕駛消防車輛執行各項消防 計算數據顯示出水箱消防車行駛於彎

勤務，每次任務的指派除須順利完成使命 道時，應儘量降低行駛速率，才有利於提
外，車輛往返行駛之安全也應得到重視， 高行駛的穩定性而不發生翻車事故，例
才能夠確保消防人員及用路人之生命財產 如：水庫消防車行駛於10公尺轉彎半徑的
安全。 彎道時，行駛速率應低於30公里/小時（依
本文基於力學觀點建立消防車輛力學 表8計算數據得知）。

模型，以水箱消防車輛的結構參數，運用 本文根據力學觀點分析計算得出3種載
建立的力學模型推演彎道行駛臨界速率的 有水箱之消防車輛行駛於彎道不發生側翻
計算公式，藉此計算分析車輛出勤轉彎行 的臨界速率數據，可做為制定安全駕駛規

駛時，不發生側向滑動與側向翻倒的安全 範的參考，以期增加駕駛員操縱車輛的穩
臨界速率、臨界傾斜角與轉彎半徑…等等 定性，並且確保車輛出勤執行任務往返之
數據，藉此探討水箱型消防車輛出勤轉彎 安全。
行駛的穩定性。

When firefighters drive fire engines to execute duties, they should accomplish their missions as well
as emphasize the safety of driving to make sure they won’t damage themselves and other pedestrians
or vehicles. This paper aims to build the mechanical model of fire engines. With structural parameter of
fire tankers, the author deduces a formula to calculate the critical speed for built mechanical model of
fire engines driving on curves. With the formula, the author calculates safe critical speed, critical oblique
angle and turning radius to prevent on-duty fire engines from lateral sliding or lateral overturn when
taking a turn to discuss fire tankers’ driving stability when taking a turn.
Calculation data shows that fire tankers should lower the speed as much as possible when taking a
turn to prevent a turnover from happening. For example, fire tankers driving on the road with a turning
radius more than 10 meters, they should lower the speed to 30km/hr (according to chart 8). This paper,
based on the point of view of mechanics, calculates critical speed to prevent three different kinds of fire
tankers from lateral overturns when taking a turn. It can be viewed as a reference for fire engines’ safe
driving to make sure the safety when firefighters drive fire engines to execute duties.

1. 國立屏東科技大學土木工程研究所碩士生
2. 國立屏東科技大學土木工程研究所副教授

20 Fire Safety Monthly