铁道建筑

针对铁路桥梁BIM设计中地形地质数据与桥梁结构参数存在数据孤岛、人工转录效率低且国外平台难以深度定制的问题，本文基于国产Railworks平台，提出一种以参数自动映射为核心、地形地质数据驱动的铁路桥梁建模方法。集成多源勘察数据与成熟空间建模算法，构建适配铁路带状工程的三维地形-地质模型；建立地形地质条件与桥梁下部结构关键设计参数间的显式映射规则；依托参数化构件库与平台API接口，实现设计参数自动解算与三维模型驱动装配。工程验证表明，该方法能有效打通地勘数据与桥梁BIM设计间的数据链路、显著提升设计效率，为实现国产BIM环境下地形地质驱动桥梁参数化建模提供了可行的技术路径。

Aiming at the problems of data islands between terrain-geological data and bridge structural parameters， low efficiency of manual data transcription， and difficulty in in-depth customization of foreign platforms in railway bridge BIM design， this paper proposes a terrain-geology data-driven railway bridge modeling method with automatic parameter mapping as the core based on the domestic Railworks platform. This study integrates multi-source investigation data and mature spatial modeling algorithms to construct a 3D terrain-geology model adapted to railway linear projects. Explicit mapping rules between terrain-geological conditions and key design parameters of bridge substructures are established. Relying on the parametric component library and platform API interfaces， the automatic calculation of design parameters and the driven assembly of three-dimensional models are realized. Engineering verification shows that the proposed method can effectively connect the data link between geological survey data and bridge BIM design and significantly improve the design efficiency， which provides a feasible technical path for realizing terrain-geology driven parametric modeling of bridges in domestic BIM environments.