水道港口2025，Vol.46Issue(3)：391-397,7.
基于实时动态监测的杭州湾跨海大桥桥墩冲刷特征研究
Research on the scouring of piers of Hangzhou Bay Bridge based on real-time dynamic monitoring
摘要
Abstract
The foundation erosion of the bridge pier is affected by many factors such as local hydrodynamic force,pier structure and sediment content,which induced significant three-dimensional hydrodynamic forcing.Hangzhou Bay is characterized with strong tide and high sediment content.The scouring and silting around the bridge pier are thus extremely complex,and the in-situ measurement of local scouring is difficult.In this paper,the dynamic monitoring system for piers scouring with biaxial acoustic scanning technology was established,and the measurement accuracy reached the centimeter level.The high-frequency scouring monitoring of the ramp piers of Hangzhou Bay Bridge was carried out,and scouring and silting of the bridge piers were analyzed.The results show that pier scouring pit presents a stable form of a regular circle.It shows a tidal-cycle trend of silting from the spring tide to neap tide,and vice versa.The average scouring amplitude between the maximum tidal floods is about 0.5 m.The scouring and siltation between the tidal fluctuations around the bridge piers range from 0.2 m to 0.4 m.The pier shows an overall siltation trend during the monitoring period,with an average siltation of about 0.4 m.During the monitoring period,the terrain near the bridge pier generally reaches a balance of scouring and silting.The biaxial acoustic scanning technology adopted in this paper will provide a large amount of basic data support for the dynamic monitoring and early warning of scouring of bridge piers.关键词
杭州湾大桥/局部冲刷/动态监测/桥墩/声学扫描/寒潮Key words
Hangzhou Bay Bridge/local scour/real-time monitoring/bridge pier/acoustic scanning/cold wave分类
建筑与水利引用本文复制引用
夏晓亮,崔志伟,解鸣晓,王恒,韩志远..基于实时动态监测的杭州湾跨海大桥桥墩冲刷特征研究[J].水道港口,2025,46(3):391-397,7.基金项目
国家重点研发计划项目(2023YFB2603800) （2023YFB2603800）
天津市科技计划项目(23YDPYCG00010) （23YDPYCG00010）
国家自然科学基金项目(52171260,42006153) （52171260,42006153）
