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由于山区地形、地质条件复杂,路线方案是工程的关键,影响路线方案的因素众多,除了路线长度、平曲线最小半径、最大纵坡、土石方数量、桥隧长度、占地数量、工程造价等重要指标外,一个常常被忽视或谈忘的指标──平均纵坡,是衡量一段高速公路安全、经济之间是否协调的重要尺度。本文主要针对高速公路安全性评价的重要控制指标平均纵坡展开讨论,希望在路线方案的研究、评判过程中得到足够的重视。
Due to the mountainous terrain and complex geological conditions, the route plan is the key to the project. There are many factors affecting the route plan. In addition to the length of the route, the minimum radius of the flat curve, the maximum longitudinal slope, the number of earth and stone, the length of the bridge and tunnel, the land occupation, the project cost Outside the indicator, an indicator often overlooked or forgotten - the average longitudinal slope is an important measure of the safety of a section of the expressway and whether the economy is coordinated. This paper mainly discusses the average longitudinal slope of important control indexes of highway safety evaluation, and hopes to get enough attention in the research and evaluation of the route scheme.