土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (6): 750-752.

• 测试技术 • 上一篇    下一篇

多波束测深系统在跨海大桥桥梁基础水下岸坡稳定性检测中的应用

姚文杰1，王华俊1，马玉全2   

  1. （1.浙江省工程勘察设计院集团有限公司，浙江宁波 315012；2.浙江沪杭甬高速公路股份有限公司，杭州 310020）
  • 收稿日期:2020-05-23 修回日期:2020-09-15 出版日期:2020-12-30 发布日期:2020-12-25
  • 作者简介:姚文杰（1988-），男，硕士，注册岩土工程师，研究方向为岩土工程。

Application of MultiBeam Sounding System in an Underwater Marine Slope Stability Inspection fora SeaCrossing Bridge Foundation

YAO Wenjie1, WANG Huajun1， MA Yuquan2   

  1. (1.Zhejiang Engineering Exploration and Design Group Co. Ltd., Ningbo 315012;
    2.Zhejiang Hu HangYong Expressway Group Co. Ltd., Hangzhou 310020)
  • Received:2020-05-23 Revised:2020-09-15 Online:2020-12-30 Published:2020-12-25

摘要： 利用多波束测深系统，获取西堠门大桥桥梁基础水下岸坡的详细测深数据，生成水下地形图，分析海底地形地貌特征，为后期岸坡整体稳定性分析评价提供了基础地形数据。通过三维点云模型的建立，快速、直观确定水下岸坡的形态、坡度、地势起伏、细部地形特征等信息，判断是否存在冲刷、掏蚀等不利现象，进而实现对桥梁基础水下岸坡的稳定性检测。相比传统方法，该测深体统具有覆盖范围广、分辨率高的特点。多波束测深系统在本桥梁基础水下岸坡检测中成功应用值得类似工程借鉴参考。

关键词: 多波束测深系统, 西堠门大桥, 桥梁基础, 水下岸坡, 边坡检测

Abstract: In this paper, a multibeam bathymetric system with wide coverage and high resolution was used to obtain detailed bathymetric data of an underwater marine slope near foundations of Xihoumen Bridge. The system provides the basic topographic data for the further analysis and evaluation of the overall stability of the marine slope by generating underwater topographic map and analyzing characteristics of the seabed topography and geomorphology. Through the establishment of threedimensional point cloud model, the shape, gradient, topographic fluctuation and detailed to pographic features of underwater coastal slope can be determined quickly and intuitively.Through judging whether there are some unfavorable phenomena such as erosion and scour, the stability inspection of underwater marine slope near the bridge foundation could be conducted. The success of the multibeam sounding system application in the inspection of this underwater marine slope near the bridge foundation could be referenced for similar projects in the future.

Key words: Multibeam Sounding System, Xihoumen Bridge, Bridge Foundation, Underwater Marine Slope, Slope Stability Inspection

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