An Integration Framework of InfraHBIM-HGIS for Reconstructing Infrastructure Heritage Evolution: The Taipingling Corridor Along the Chinese Eastern Railway

Infrastructure heritage corridors are characterized by large spatial extents, dispersed asset distribution, complex historical transformations, and heterogeneous data sources, which make their documentation and reconstruction particularly challenged. To address these barriers, this study proposes a corridor-oriented InfraHBIM–HGIS framework for the reconstruction and documentation of infrastructure heritage, using the Taipingling Corridor of the Chinese Eastern Railway (CER) as a case study. The framework integrates an archival database, a geospatial database, InfraHBIM-based modelling, and HGIS within a unified workflow. Multi-source datasets, including georeferenced historical maps, raster and vector geospatial data, and point clouds generated through drone-based photogrammetry, are systematically organized and linked through a previously developed 12-digit identification system. A condition-based modelling strategy is adopted to combine forward modelling from archival records with reverse modelling from point-cloud data, enabling the reconstruction of extant, vanished, and transformed heritage assets across multiple historical stages. The integrated results are consolidated in a GIS-centered environment to support cross-scale visualization, semantic linkage, and spatial analysis, and are further disseminated through a WebGIS platform for remote access and interactive exploration. The study demonstrates that the proposed framework provides an operational approach for the multi-scale and multi-temporal integration of documentary, spatial, and model-based information in corridor-scale infrastructure heritage.