波浪周期对防波堤护面块体稳定性影响的试验分析

Experimental Analysis of the Influence of Wave Period on Stability of Breakwater Armor Block

波浪对斜坡堤护面结构的冲刷破坏作用受诸多因素的影响,如波浪要素、水深条件、坡面角度、护面块体型式等。在进行某项有关斜坡堤护面块体的课题研究中发现,当防波堤断面结构确定后,护面人工块体的稳定性主要取决于波高及波周期的变化。在进行这方面内容设计计算中,通常波高的取值都能给予足够的重视,但波周期对护面块体稳定性的影响容易被忽视。本研究通过物理模型试验,针对波浪周期对斜坡堤护面块体稳定性的影响进行了总结分析,为防波堤设计提供参考。

The scouring and breaking of waves to the structure of sloping breakwaters are affected by many factors, such as wave elements, water depth, slope angle, armor block types, and so on. In studying the armor blocks of some sloping breakwaters, we found that the stability of an artificial block depends mainly on the changes of wave height and wave period when the sectional structure of breakwater is determined. Usually, the value of wave height has been paid enough attention in calculating and designing the armor block stability. However, the effect of wave period on the armor block stability is commonly ignored. This article is, by means of physical model testing, to summarize and analyze the influences of wave period on the armor block stability of the sloping breakwaters, and to provide references for the design of breakwaters.