(1 华东建筑设计研究院有限公司， 上海 200041； 2 同济大学土木工程学院， 上海 200092）

［摘要］以山东淄博潭溪山人行桥项目为背景，采用三维激光扫描技术对山体地貌进行精细化扫描，通过点云拼接、去噪，得到准确的山体地貌三维模型； 结合桥墩基础平面及竖向布置要求，进行三维协同设计。根据基础远离岩壁及减少山体岩体挖填方的原则，对基础布置进行优化分析，选择合适的桥墩位置；然后采用ANSYS软件进行整体有限元分析，为桥墩基础受力及岩体稳定性分析提供参考。本工程采取的三维协同设计技术措施可为类似复杂山体工程提供借鉴。

［关键词］潭溪山人行桥； 三维激光扫描技术；  协同设计； 岩体稳定性分析

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2020)18-0122-04

Application of BIM-based 3D laser scanning technology in complex mountainous foundation design

LI Jinjun1, CAI Zhongxiang1, ZHANG Qilin2, YUE Jianyong1

（1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200041, China; 2 College of Civil Engineering, Tongji University, Shanghai 200092, China）

Abstract:Taking the Tanxi mountain peolestrain bridge project in Zibo, Shandong Province as the background, 3D laser scanning technology was used to finely scan the mountain landform, and an accurate 3D model of the mountain landform was obtained through point cloud splicing and denoising. Combined with the requirements of the pier foundation plane and vertical layouts, 3D collaborative design was conducted, and the analysis was optimized according to the mountain rock mass. The appropriate bridge position was selected. Then the ANSYS software was used to perform the overall finite element analysis to provide references for the analysis of the pier foundation force and rock stability. The technical measures of 3D collaborative design adopted in this project could provide reference for similar complex mountain engineering.

Keywords:Tanxi mountain pedestrain bridge;  3D laser scanning technology;  collaborative design; analysis of rock stability

作者简介：李进军，博士，教授级高级工程师，Email：jinjun_li@arcplus.com.cn。