深水直立堤明基床护坡和护肩块体设计

Design of armour units and foot protection blocks for vertical breakwater foundation mound in deep water

为了确定深水直立堤明基床护坡和护肩块体的稳定质量,总结了国内外现有计算方法,并结合实际工程的2D和3D物模试验数据进行对比。结果表明:1)在长周期大波浪条件下,JTS 154—2018计算所得的护坡块石质量偏大,说明国标的计算方法在该波浪条件下已经不再适用。2)正向浪条件下,改进的Tanimoto公式计算所得堤身护坡块体稳定质量偏小,建议设计中应适当保守考虑。3)根据改进的Tanimoto公式,随着波浪入射角(<90°)增大,堤身护坡块体的稳定质量显著增大。4)重要工程应通过物理模型试验论证设计方案的合理性。

To determine the stable mass of armour units and foot protection blocks for vertical breakwater foundation mound,we summarize calculation methods in Chinese code and other international codes and compare them with the 2D and 3D physical model test data of actual project.The conclusions are as follows:1)Under the condition of long-term large waves,the mass of slope protection stones calculated by JTS 154-2018 is large,indicating that the calculation method of the national standard is no longer applicable under the wave conditions.2)When the waves come perpendicular to the faceline of the upright wall,the stable mass of the embankment protection block calculated by the improved Tanimoto formula is small,and it is recommended that appropriate conservative consideration should be given in the design.3)According to extended Tanimoto s formulas,the stable mass of armour units increases along with bigger incident wave angle(<90°).4)It is suggested that the design scheme of important project should be verified by physical model tests.