摘要
为了研究中东某防波堤项目采用的一种新型单层人工块体Crablock的设计参数,整理分析该块体已有的物模试验研究成果,并将该块体的参数与当前国际主流的4种单层人工块体Accropode TM、Accropode TM II、Core-Loc、Xbloc进行对比研究。结果表明:1)该块体的稳定数N s为2.8~3.3,对应k D值为16~27,稳定性比其余4种块体有较大的提高;2)与其余4种块体采用随机安装不同,该块体在矩形规则安装时能够获得良好的块体联锁和安装密度;3)与其余4种块体设计垫层时采用110块体质量不同,该块体建议采用比传统设计更小的125块体质量的垫层;4)该块体的越浪糙率系数还未在试验中确定,但不小于0.45。设计时应以物模实测越浪为准。
In order to evaluate design parameters of a new single-layer concrete armor unit-Crablock,which has been applied to a breakwater project in the Middle East,this paper analyzes previous physical model test results and compares main parameters of Crablock with those of 4 extensively used units,i.e.Accropode TM,Accropode TM II,Core-Loc and Xbloc.The results show that:1)The stability number of Crablock N s ranges from 2.8 to 3.3,corresponding to K D value of 16 to 27,which has a better stability than the above 4 units.2)The uniform rectangular placement pattern is recommended for Crablock,which differs from the random pattern of the above 4 units.3)A smaller underlayer of 125 armor weight is proposed for Crablock,which is also different from the general underlayer of 110 of the above 4 units weight.4)The overtopping roughness factor is not defined in the physical model test,but a value larger than 0.45 is verified.The actual wave overtopping shall be in accordance with the result from the physical model test.
作者
杨小龙
YANG Xiao-long(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510230,China)
出处
《水运工程》
北大核心
2020年第11期53-56,共4页
Port & Waterway Engineering
