双向四车道高速公路防眩板设置高度研究

通过对绝大多数资料中防眩板设置高度计算公式的研究,分析了设置高度计算公式的推导过程;根据防眩板设置高度的计算图示,推导了在计算防眩板设置高度时的车道组合原则;根据车辆的前灯高度与驾驶员视线高度的建议值、一般情况下的中央分隔带宽度、车道宽度和防眩板的抗风载能力等因素,确定了在双向四车道高速公路上防眩板的合理设置高度应为1.60～1.70 m;最后,根据防眩板设置高度为1.60 m或1.70 m时,得出了双向四车道高速公路上中央分隔带宽度应大于等于3.75 m或2 m。

Study on The Setting Height of Anti-dazzle Board in Bidirectional Four-lane Highway

According to study on the setting height formula of anti-dazzle board in vast majority of data,the paper analyses the derivation of the setting height formula.According to the picture of calculating the setting height of anti-dazzle board,the paper derives the lane combination principle on calculating the setting height of anti-dazzle board.According to the recommended value of vehicle headlight height and driver eye level,the normal width of the median disjunctive strip and lane,anti-wind capacity and other factors,the paper ascertains that the reasonable setting height of anti-dazzle board is 1.60~1.70 m in bidirectional four-lane highway.Finally,the paper elicits that the maximum width of the median disjunctive strip should be equal or greater than 3.75 m or 2 m in bidirectional four-lane highway when the setting height of anti-dazzle board is 1.60 or 1.70 m.