斜坡堤天然块石护脚的稳定性计算  

Stability calculation of rubble mound toe berm in the front of the sloping breakwater

作　　者：吴中[1] 林民标 杨越[1] 

机构地区：[1]河海大学交通与海洋工程学院,江苏南京210098 [2]福建省港航管理局,福建福州350002

出　　处：《海洋工程》2002年第2期19-23,共5页The Ocean Engineering

摘　　要：试验研究表明 ,不规则波对斜坡堤护脚棱体稳定性的威胁大于波高对应于Hs 的规则波 ,斜坡堤护面形式对护脚块石的稳定也有影响。Gerding公式虽然准确地描述了棱体在波浪作用下的稳定性规律 ,但由于护面糙率、透水率等因素的影响在工程上应用仍需进一步修正。文章指出在中低水位 ,Gerding公式计算的护脚棱体稳定重量有可能偏小 。It is shown in this test study that irregular wave poses greater threat to the stability of toe berm in the front of sloping breakwater than regular wave corresponding to Hs, and that the form of the armor layer also influences the toe berm block stability. Although Gerding Formula gives an accurate description of the toe berm stability law under wave action, further improvement is needed in the project application due to the influences of such factors as armor layer roughness, hydraulic conductivity, and so on. This paper points out that under the low or median water level, the weight results of toe berm brought out from Gerding Formula is not big enough to secure stability. Hence, correction coefficients for different kinds of armor layers are suggested.

关 键 词：护脚棱体 斜坡堤 稳定性 Gerding公式 

分 类 号：U661.4[交通运输工程—船舶及航道工程]