摘要
为解决隧道改建工程中,难以根据地表真实岩体形态对隧道模型进行动态设计与调整的问题,通过遥感测绘(无人机倾斜摄影和地面激光扫描)技术与建筑信息建模(building information modeling,BIM)相结合,形成了一套新的隧道线路布设和结构设计方法。首先,采用无人机倾斜摄影建立地表实景模型,利用地面激光扫描技术采集隧道和外围山体的表面信息,分别从整体和细节层面分析隧道状态。其次,提出一种隧道BIM自适应建模方法:采用分段两点三次Hermite插值方法创建样条曲线作为隧道中心线,将中心线分段后,采用自适应点控制各段隧道结构单元模型的截面轮廓,通过扫掠截面创建隧道的整体模型。最后,针对隧道线路上某点进行求导后,将该点法平面近似作为隧道的横断面,将BIM模型与点云模型集成后,通过比对横断面检验隧道改建方案的合理性,并以河北省平涉公路井陉隧道改建工程为背景进行了方法验证与应用。结果表明:基于隧道BIM自适应建模方法编写的建模程序所建立的隧道模型在曲线段无裂隙或嵌入,通过改变参数可以调整隧道的线形与几何结构;将隧道点云和BIM模型相集成,能够表现设计隧道、既有隧道及外侧岩壁的相对位置关系;利用Revit进行二次开发,实现了隧道任意里程处的横断面剖切,断面视图可正确表达隧道设计。该方法有效结合了BIM和遥感测绘技术,有助于设计中规避不良地质区域和设计良好的隧道结构。
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 two-point cubic Hermite interpolation method as the tunnel centerline. The cross-section 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 cross-sections. Finally, the derivative of one point on the tunnel centerline was found, the normal plane at this point was approximated as the cross-section 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 cross-sections. 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 s
作者
张文胜
郝孜奇
王丙占
崔德邦
ZHANG Wen-sheng;HAO Zi-qi;WANG Bing-zhan;CUI De-bang(School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,Hebei,China;Traffic Safety and Control Laboratory of Hebei Province,Shijiazhuang 050043,Hebei,China;Shandong Provincial Communications Planning and Design Institute Co.,Ltd,Jinan 250031,Shandong,China;Shijiazhuang Traffic Survey and Design Institute,Shijiazhuang 050071,Hebei,China)
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第1期59-68,共10页
Journal of Chang’an University(Natural Science Edition)
基金
中央引导地方科技发展资金项目(206Z0801G)
河北省科技计划重点项目(18390324D)
2020河北省引进国外智力项目
石家庄市科技计划项目(181130034A)。
关键词
隧道工程
横断面
三维模型
建筑信息建模
点云
tunnel engineering
cross-section
3D modeling
building information modeling
point cloud
