波浪作用下可渗沙质海床模型相似率研究  

Study on model similarity rate of permeable sandy seabed under wave action

作　　者：孙天霆 王登婷[1] 李岩汀 刘清君[1] 黄哲 SUN Tian-ting;WANG Deng-ting;LI Yan-ting;LIU Qing-jun;HUANG Zhe(Nanjing Hydraulic Research Institute,Key Lab of Port,Waterway and Sedimentation Engineering of MOT,Nanjing 210024,China)

机构地区：[1]南京水利科学研究院,港口航道泥沙工程交通行业重点实验室,江苏南京210024

出　　处：《水运工程》2020年第11期34-39,77,共7页Port & Waterway Engineering

基　　金：国家重点研发计划资助项目(2019YFB1600700);引江济淮工程科研项目(YJJH-YJJC-ZX-20191106220);南京水利科学研究院中央级公益性科研院所基本科研业务费专项资金项目(Y220002、Y220013);江苏省水利科技项目(2019009)。

摘　　要：海床渗流是海洋工程设计中重点考虑的因素之一,其影响着建筑物的稳定性,严重时还会引起海床液化。现有波浪与海床相互作用的有关研究尚未解决实验室内海床的模拟方法问题。基于此,进行波浪作用下可渗沙质海床模型相似率研究,通过系列波浪水槽物理模型试验,基于原型孔隙水压力与模型值相似的条件,提出实验室内模拟海床的相似准则。结果表明:沙质海床相似比尺与模型几何比尺的关系为λ海床=λ13。Seabed seepage is one of the key factors to be considered in the design of marine engineering design,which affects the stability of structures and even causes seabed liquefaction seriously.The existing related research of the interaction between waves and seabed has not solved the problem of simulation method of seabed in the laboratory yet.Based on this,we study the similarity rate of permeable sandy seabed model under wave action.Based on the condition that the prototype pore water pressure is similar to the model value,we propose a similarity criterion for simulating seabed in laboratory through a series of wave flume physical model tests.The results show that the relationship between the similarity scale of sandy seabed and model geometric scale isλseabed=λ13.

关 键 词：海床 孔隙水压力 相似准则 比尺效应 

分 类 号：TV139.16[水利工程—水力学及河流动力学] U652[交通运输工程—港口、海岸及近海工程]