结合桥梁与隧道的高速公路线形优化

  结合桥梁与隧道的高速公路线形优化(中文4000字,英文2000字)
摘要：窗体顶端
摘要：一种三维公路线形优化方法，分别自动确定桥梁或隧道是否以及在何处是填土还是深挖，是成熟的。这是通过比较这些备选方案的优化成本来完成的。对土方的详细计算、铁路地役权、车辆运行、用户时间和其他成本的数据的获得来自一个为每个备选方案校准的地理信息系统（GIS）。线路优化过程依赖于为这个问题开发的演变算法。两个实例研究在虚拟的研究领域与真正的地理信息系统的实现，表明通过模拟桥梁和隧道，我们可以改善公路线形优化的可靠性和适应性，以及找到比其他方法更多的切实可行的解决方案。
CE数据库主题词：桥梁；高速公路;隧道;线路;地理信息系统;算法。

Abstract: A three-dimensional highway alignment optimization methodology is developed that automatically determines whether and where bridges or tunnels are preferable to embankments or deep cuts, respectively. This is done by comparing the optimized costs of such alternatives. The data for detailed computations of earthwork, right-of-way, vehicle operation, user time, and other costs are obtained from a geographic information system （GIS） for each alternative alignment considered. The alignment optimization process relies on a genetic algorithm developed for this problem. Two example studies implemented in an artificial study area with a real GIS show that by modeling bridges and tunnels we can improve the reliability and adaptability of highway alignment optimization as well as find more practical solutions than otherwise.

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