新型开孔工字板组合式防波堤波浪力特性试验研究

开孔工字板组合式防波堤是基于透空板式防波堤的一种新型结构形式,具有自重轻、材料省的特点。为充分了解新型开孔组合式防波堤的受力特性,基于室内水槽物理模型试验,测量新型开孔工字板组合式防波堤上的波压力与结构总力,研究相对波高H/d、相对波长L/B对该新型防波堤结构表面压力的影响,讨论了该新型防波堤所受波浪力荷载与相对波高H/d、相对波长L/B的关系。结果表明,相对波高H/d是决定新型防波堤结构表面波压力和结构总力的主要影响因素。该新型防波堤结构波浪力荷载以垂直方向受力为主,新型防波堤结构所受竖向总力远大于水平总力,最大可达到15倍。新型防波堤水平总力随相对波长L/B先增大后趋于稳定。相对波长L/B=3.617是防波堤结构水平总力变化幅度的分界点。

Experimental study on wave force characteristics of the porous I-type plate composition breakwater

The porous I-type plate composition breakwater, which has the characteristics of light weight and material saving, is a new type of structure based on the permeable plate type breakwater. In order to fully understand the force characteristics of the porous I-type plate composition breakwater, the wave pressure and total structural force were measured based on a series of laboratory flume tests. By analyzing the influence of relative wave height H/d and relative wavelength on the surface pressure of the structure, the relationships between wave force load and the aforementioned two factors are discussed separately. The results show that the relative wave height H/d is the main influencing factor of the surface wave pressure and the total structural force of the breakwater structure. The wave force load of the new breakwater structure is mainly applied in the vertical direction. The vertical total force of the breakwater is much larger than the horizontal total force, and the maximum can reach 15 times. The total horizontal force of the breakwater tends to be stable with the increase of the relative wavelength L/B. The relative wavelength L/B=3.617 is the critical point of the magnitude of the total horizontal force of the breakwater structure.