原型观测试验下平均越浪量的计算公式

多种平均越浪量的计算公式均基于物模试验研究得到,而缺少现场原型越浪数据的验证。基于横沙东滩促淤圈围五期工程允许越浪原型观测试验项目,整理出可供研究的实测数据。运用图表统计、因子分析和无量纲化的方法,对Van der Meer公式和海堤工程设计规范公式所考虑的各类因素进行分析和比选,并对两公式分别做出评价。结果表明,Van der Meer公式计算值较实测值偏小,海堤工程设计规范公式计算值与实测值较为吻合,后者基本可以满足上海地区斜坡堤波浪正向入射情况下平均越浪量计算的需要。

Mean overtopping formula based on prototype observation experiment

Many formulas for calculating mean overtopping are based on physical model experiment,but lack validation of field prototype overtopping data.Based on Hengsha east shoal siltation circle project (Phase V) for permissible overtopping prototype observation test,we collect the related experimental data for researching.Using graphic statistics,factor analysis and nondimensionalization,we analyze and compare the factors in the Van der Meer formula and code for design of sea dike project formula based on the recorded data,and evaluate them.The results show that the calculated value of the Van der Meer formula is smaller than the measured data,but the calculated value of the code for design of sea dike project formula is consitent with the measured data,which can basically satisfy the calculation of mean overtopping value of the normal incidence waves of mound breakwater in Shanghai area.