基于BIM的道路线形设计及安全评价方法探讨

Discussion on Road Alignment Design and Safety Evaluation Method Based on BIM

传统的道路线形设计方法难以实现平面线形、纵断面线形之间的动态关联,且忽略了平、纵线形组合的影响,不能全面评价道路线形安全。鉴于此,首先分析了BIM技术在道路线形设计中的应用优势,并确定了将Civil 3D作为BIM建模平台,随后结合某高速公路为工程依托,探讨了三维曲面建模、道路平面线形、纵断面线形设计的实现方法,最后基于BIM技术提出了车辆运行速度和到位空间三维视距的安全评价方法和标准。

The traditional road alignment design method is difficult to realize the dynamic correlation between the horizontal alignment and the vertical alignment,and ignores the influence of the combination of horizontal and vertical alignments so that it cannot comprehensively evaluate the road alignment safety.In view of this,the application advantages of BIM Technology in road alignment design are analyzed,and the Civil 3D is determined as the BIM modeling platform.Relying on an expressway project,the realization methods of 3D curved surface modeling,road plane alignment and vertical section alignment design are discussed.Based on BIM technology,a safety evaluation method and standard for vehicle running speed and 3D line-of-sight in position space are proposed.