Positioning of cubes on a breakwater slope
Positioning of cubes on a breakwater slope
复制标题
在防波堤斜坡上放置立方体
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. V. Vliet
中科院分区：
文献类型：
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作者：
H. Verhagen;K. D. Angremond;K. V. Vliet
最近的研究表明，可以使用混凝土立方体作为防波堤上的单一护面层。然而，这仅在实现至少70%的放置密度的情况下才是可能的。在实验室测试中，以这种密度放置立方体是没有问题的，但是在原型情况下是否可以实现这种放置密度是值得怀疑的。为了确定从起重机上将混凝土块跌落到防波堤斜坡上的要求，已经进行了许多试验。结论是，在水深约为块体尺寸的10倍时，刚好可以实现这一点，而在较小的深度时，可以没有太多困难地达到这一放置密度。然而，在所有情况下，一个良好的质量脚趾是至关重要的高放置密度。块体必须相对于防波堤轴线成45 °角放置;块体平行于防波堤轴线放置将导致大空隙。
Recent research has shown that it is possible to use concrete cubes as a single armour layer on breakwaters. However, this is only possible in case a placing density of at least 70 % is achieved. In lab-tests it is no problem to place cubes with this density, however it is questionable if such a placing density can be achieved in prototype situations. A number of tests have been carried out in order to determine the requirements for dropping concrete blocks from a crane onto a breakwater slope. The conclusion is that at a waterdepth of approximately 10 times the block size this just can be achieved and that at smaller depth this placing density can be reached without too many difficulties. However, in all cases a good quality toe is vital for a high placing density. Blocks have to be placed at an angle of 45° with respect to the breakwater axis; blocks placed parallel to the breakwater axis will lead to large voids.