摘要
通过开展三维物理模型试验,对宽肩台防波堤堤身稳定性进行了研究。研究了强浪向和其他不同方向波浪作用下,不同水位往复循环后防波堤堤身动态平衡形态的形成规律。试验考虑了浪向的不同对防波堤护面块石、肩台块石和护底块石物质输移的影响,验证了相关规范中关于斜坡堤护面块石重量确定的合理性。试验结果表明,斜向浪作用下宽肩台防波堤的护底块石除了发生断面内的物质输移外,在防波堤轴向也存在明显的物质输移;低水位情况下主要发生护底块石的冲刷,而高水位情况下则主要是堤顶附近区域护面块石和肩台块石发生原位置滚动;增大堤顶区域的护面块石厚度可改善其稳定性;斜向浪作用下,堤身护底宽度损失沿堤轴向分布并不均匀。
The stability of the wide-berm breakwater was studied by conducting the wave basin model experiments.The dynamic equilibrium shape of the breakwater was described under the influence of waves in several main directions,for each of which the experiments were made with a complete circulation of the water level.The effects of the wave directions on the stability of armor rocks,berm stones and bottom protection layer were studied and the stable weight of the rocks from the design code was verified in this paper.Under the oblique incident waves,the transfer of the bottom protection stones occurs not only in the cross section but also along the axial direction of the breakwater.In low water level there is mainly the transfer of bottom stones,while in high water level the rolling of berm rocks happens.The armor rock layer on the top is more stable with a greater thickness value.The loss of the bottom protection layer is not uniform along the axial direction of the breakwater.
作者
邓夕贵
朱颖涛
谢守鹏
王培志
刘鸣洋
栾英妮
陈汉宝
DENG Xi-gui;ZHU Ying-tao;XIE Shou-peng;WANG Pei-zhi;LIU Ming-yang;LUAN Ying-ni;CHEN Han-bao(China Harbour Engineering Co. Ltd., Beijing 100027, China;Tianjin Research Institute for Water Transport Engineering,National Engineering Laboratory for Port Hydraulic Construction Technology,Key Laboratory of Engineering Sediment,Ministry of Transport,Tianjin 300456,China;College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China)
出处
《水道港口》
2021年第6期709-718,共10页
Journal of Waterway and Harbor
基金
国家自然科学基金项目(52101316,51809133)
中央级公益性科研院所基本科研业务费项目(TKS20210405)。
关键词
宽肩台防波堤
稳定性
三维模型
wide-berm breakwater
stability
three-dimensional experiment
