中文摘要：

局部冲刷作为海洋基础冲刷破坏最为突出的一种形式,历来都是桥梁设计师们设计时重点考虑的问题。当局部冲刷作为一种不可避免的现象出现时,必须预先采取措施来确保其不会影响桥梁安全。其中,抛石防护是应用最为广泛的防护形式之一,其特点在于取材方便、工艺简单、操作实施灵活性大,一直以来也是研究热点。从局部冲刷以及抛石防护的基本理论出发,利用水槽试验来研究和探索抛石防护对局部冲刷坑发展的抑制情况,以及不同参数下碎石防护层防护效果的差异。

英文摘要：

As most destructive form of marine base erosion, local scour has long been the major consideration of bridge designers in design. When local scour is unavoidable,measures shall be taken to prevent it from damaging bridge safety. rubble protection is the most popular protection methods,it features easy material acquirement,simple process and flexible operation,and for long it has been the study hot spot. This paper,beginning with local scour and rubble protection theory,uses water tank test to study and explore the role of rubble protection to local scour,and the difference of rubble protection effect under different parameters.