潜堤下游软体排与透水框架联合护底效果分析

Protection effect of soft mattress-permeable frame joint bottom protection downstream submerged breakwater

软体排和透水框架护底作用机理及应用条件各异。为充分发挥两者的优势,提出联合护底的结构形式。通过水槽试验研究潜堤下游联合护底的防护效果,并分析联合护底的经济性。结果表明,采用联合护底能够有效减弱护底边缘的局部冲刷强度,要达到相近的护底守护效果,联合护底相对单纯软体排护底可节省工程投资5%以上。

The application conditions and protection mechanism of soft mattress are different from the permeable frame. In order to give a full play of the advantages of both, we put forward the joint structure for the bottom protection. Studying the protective effect of the submerged breakwater by the water tank test, and analyzing the economic efficiency of the joint bottom protection, we get to the conclusion that the joint structure can weaken effectively the local scour at the edge of the bottom protection. To achieve similar effects of bottom protection, the joint bottom protection can save project investment of more than 5%.