波浪作用下开孔混凝土护面板浮托力研究  

Uplift forces of armoring concrete slab with different porosity

作　　者：张庆丰[1] 陈国平[2] 

机构地区：[1]海军工程设计研究局,北京100070 [2]河海大学港口海岸与近海工程学院海岸灾害与防护教育部重点实验室,江苏南京210098

出　　处：《水运工程》2011年第11期52-56,共5页Port & Waterway Engineering

摘　　要：在混凝土护面板上开孔可增大护面层的渗透系数、减小浮托力、增强整体稳定性。通过不规则波系列试验,研究了波坦、坡度、伊里巴伦数、开孔率对混凝土护面板相对净浮托力大小的影响,分析了相对净浮托力的作用深度、分布情况。对于不开孔混凝土板,相对净浮托力随波高和波长的增大都有减小的趋势;对于开孔的混凝土板,相对净浮托力随开孔率的增大线性减小。在此研究基础上给出了最大相对净浮托力计算公式,并与前人公式进行了比较。Perforating on armoring concrete slabs can increase the permeating coefficient of the armoring layer,reduce the uplift forces,and strengthen the overall stability of the slabs.A series of experimental tests on irregular waves were carried out to analyze how steepness,gradient of the slope,porosity and ξ influence the value of relative net uplift forces of the concrete armoring slabs,and the impact depth and distribution of the relative uplift forces.For the concrete slabs without pores,the relative net uplift forces decrease with the increase of the wave height and wave length;as for the concrete slabs with pores,the relative net uplift forces decrease with the increase of porosity.

关 键 词：开孔率 混凝土护面板 不规则波 浮托力 

分 类 号：V656.36[航空宇航科学技术]