BIM modeling method and practice of tunnel reconstructionproject based on point cloud(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2021年1期
- Page:
- 59-68
- Research Field:
- 桥梁与隧道工程
- Publishing date:
Info
- Title:
- BIM modeling method and practice of tunnel reconstructionproject based on point cloud
- Author(s):
- ZHANG Wensheng1; 2; HAO Ziqi1; 3; WANG Bingzhan4; CUI Debang1
- (1. School of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang 050043, Hebei, China;2. Traffic Safety and Control Laboratory of Hebei Province, Shijiazhuang 050043, Hebei, China;〖JP2〗3. Shandong Provincial Communications Planning and Design Institute Co.,Ltd, Jinan 250031, Shandong, China;〖JP〗4. Shijiazhuang Traffic Survey and Design Institute, Shijiazhuang 050071, Hebei, China)
- Keywords:
- tunnel engineering; crosssection; 3D modeling; building information modeling; point cloud
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to solve the problem that it is difficult to dynamically design and adjust the tunnel model according to the actual rock mass on the surface, during the reconstruction of tunnels. Through the combination of remote sensing mapping (unmanned aerial (UAV) vehicle tilt photography and light detection and ranging (LiDAR)) technology and building information modeling (BIM), a new set of tunnel routing and structural design methods was proposed. First, the UAV tilt photography was used to establish the ground surface real scene model, LiDAR technology was used to collect the surface information of the tunnel and the surrounding mountain, and the tunnel status was analyzed from the overall and partial levels. Second, an adaptive modeling method of the tunnel BIM model was proposed. A spline curve was created using the segmented twopoint cubic Hermite interpolation method as the tunnel centerline. The crosssection outline of each tunnel structural unit model was controlled using adaptive points after segmenting the centerline, and the overall model of the tunnel was created by sweeping the crosssections. Finally, the derivative of one point on the tunnel centerline was found, the normal plane at this point was approximated as the crosssection of the tunnel, the BIM model and the point cloud model were integrated to verify the rationality of the tunnel reconstruction plan through comparing the crosssections. The reconstruction of Pingshe Highway Jingxing Tunnel in Hebei Province was taken as the background to verify the method and apply it. The results show that the modeling program is compiled based on the tunnel BIM adaptive modeling method. The constructed tunnel model has no cracks or embedded in the curve section, and the line shape and geometric structure of the tunnel can be adjusted by changing the parameters. The tunnel point cloud and BIM model were integrated to represent the relative positions of the design tunnel, the existing tunnel and the outer rock wall. Through secondary development with Revit software, the crosssections cutting at any mileage of the tunnel is realized, and the crosssection view can correctly represent the designed tunnel. The proposed method effectively combines BIM and remote sensing mapping technology, which may help to avoid bad geology and to build a good tunnel structure in the design process. 13 figs, 27 refs.
Last Update: 2021-01-25