摘要
通过古海塘原型资料调查得出古海塘现状以及存在的问题,结合历年水文资料的调研和现场水体运动形式的观测,获得荷载形式,通过波浪槽在模型比尺试验的基础上对钱塘江古海塘水动力作用进行室内模拟。试验结果验证了利用规则波模拟水动力荷载的可行性,并得出波浪对塘体的作用力受波高和波浪破碎情况的影响,波高相同时破碎点越接近海塘,破碎作用力越大;波高越大,波浪-塘体-土体相互作用越强,塘下土体中产生较大的瞬时孔隙水压力并产生孔压的累积;塘体前趾和后趾出现应力集中现象,周期1.5 s波高0.2 m时前趾压力增大后趾压力减小。
The scale hydrodynamic experiment was carried out in the wave flume on the basis of the site investigation of the ancient sea wall and hydrological data. The experiments＇ results confirmed the feasibility of the use of regular wave simulation, and the conclusion was reached that the wave impact force was relative to the wave height and the wave breaking types, and breaking wave impact force was greater than broken or non-breaking wave; with the wave height increasing, the interaction between the wall and the foundation in- creased, and the instantaneous pore-water pressure was generated and accumulated; ans the stress concentration occurred at the sea wall＇ toe, the front increased but the rear reduced when the period was 1.5 second and the wave height 0. 2 meter.
出处
《海洋工程》
CSCD
北大核心
2012年第3期68-78,共11页
The Ocean Engineering
基金
水利部公益性行业科研专项经费资助项目(201001071)
钱塘江临江防洪潮古海塘保护研究资助项目
