摘要
为探究强涌潮作用下古海塘的响应规律,结合古海塘实际受荷特性,开展一系列离心机试验,通过激光位移传感器和孔压传感器实时监测塘体位移和土体孔压情况,并利用高速相机记录塘体变形,借助PIV技术分析土体在加载过程中的自身位移场变化。结果表明:在常规涌潮力作用下,海塘结构动力响应微小,呈现出良好的稳定性和安全性;在静力荷载作用下,揭示塘体运动与土中超孔压的发展趋势,确立180 kPa的极限荷载值,圈定潮头冲击区和底部条石区为潜在易损区域。相关结论能为防潮预警系统的建设和海塘修复加固提供参考。
In order to investigate the response patterns of ancient seawalls under tidal bore action,a series of centrifuge tests were carried out in combination with the actual load characteristics of the ancient seawalls.Laser displacement sensors and pore pressure sensors were used to monitor the displacement of the seawall body and the pore pressure of the soil in real time.A high-speed camera was employed to record the deformation of the seawall,and PIV(Particle Image Velocimetry)technology was used to analyze the displacement field changes of the soil during loading.The results show that under conventional tidal bore forces,the dynamic response of the seawall structure is tiny,showing good stability and safety.Under static loading,the development of the seawall body movement and the excess pore pressure in the soil is revealed,and the value of ultimate load is 180 kPa,which determines that the tidal head impact area and the bottom barstone area are the potentially vulnerable areas.The relevant conclusions can provide references for the construction of the tide warning systems and the restoration and reinforcement of seawalls.
作者
方敏慧
孙兴业
胡智超
朱沈鸣
王建华
国振
FANG Minhui;SUN Xingye;HU Zhichao;ZHU Shenming;WANG Jianhua;GUO Zhen(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,Zhejiang,China;Qiantang River Basin Center of Zhejiang Province,Hangzhou 310020,Zhejiang,China)
出处
《地基处理》
2025年第5期447-456,共10页
Journal of Ground Improvement
基金
浙江省自然科学基金(LR22E080005)。
关键词
钱塘江
涌潮
古海塘
极限承载力
离心机试验
粒子图像测速技术(PIV)
Qiantang River
tidal bore
ancient seawall
ultimate bearing capacity
centrifuge test
particle image velocimetry technology(PIV)
