摘要
桥梁桥墩施工过程中,由于测量技术的不同,导致水下测量结果偏差较大。文章提出了基于多波束检测技术的桥梁桥墩水下测量方法。在测船的合理区域安装多波束检测设备,并对水下探头进行多方位校正。依托多波束三维声呐成像原理,构建一种新的桥梁桥墩水下测量技术。针对多波束测量数据进行归算、滤波和抽稀处理,再结合Surfer软件构建水下测量三维显示图。实例应用结果显示:所提出的方法应用后,水下测量偏差低于0.1m的监测点占比为79.17%,并且水下测量最大偏差均低于0.3m,满足桥梁桥墩施工测量要求。
The deviation of underwater measurement results is large during bridge pier construction due to the difference of measurement technology. An underwater measurement method of bridge pier based on multi-beam detection technology is proposed in the paper. Multi-beam detection equipment is installed in the reasonable area of the survey ship. Multi-directional correction of the underwater probe is carried out. A new underwater surveying technique for bridge piers is proposed based on the principle of multi-beam 3 D sonar imaging. Reduction, filtering and dilution treatment are carried out in view of the multi-beam measurement data. Surfer software is combined to construct the three-dimensional display chart of underwater measurement. The example application results show that the monitoring points with the underwater measurement deviation less than 0.1 m account for 79.17% after the proposed method is applied. The maximum deviation of underwater measurement is less than 0.3 m, which meets the requirements of bridge pier construction measurement.
作者
彭国超
PENG Guochao(China Railway 18th Bureau Group Municipal Engineering Co.,Ltd.,Tianjin 300222,China)
出处
《中国水能及电气化》
2023年第1期48-53,共6页
China Water Power & Electrification
关键词
多波束
水下检测
桥墩测量
multi-beam
underwater detection
bridge pier measurement
