基于国内外规范的防波堤与护岸结构多级验算标准

Multilevel checking standard of breakwater and revetment structures based on codes at home and abroad

基于国内外设计规范和部分国际工程案例,对防波堤与护岸结构设计中在不同重现期下所采用的允许越浪量、护面块石稳定以及地震作用下的边坡稳定标准等内容进行介绍和探讨,其考虑设计工况的重现期、结合工程防护功能特点采用基于性能的多级验算标准设计理念值得在国际工程中进行推广。相比之下,国内传统设防标准主要针对效应设计值,对于抗力设计值、结构规定限值等验算标准的规定还比较单一,建议可在规范中增加适合我国国情和工程结构特点的多级验算标准。

Based on the design codes at home and abroad and some international project cases,this paper introduces and discusses the standard of allowable overtopping limits,the stability standard of armour stone and the seismic slope stability standard under different return periods adopted in the design of breakwater and revetment structures.Considering the return period of design conditions combining with the features of project protection function,the design concept of multilevel checking standard based on performance is worth popularizing for the international projects.In contrast,the traditional Chinese fortification standards mainly focus on the effect design values,and the provisions of resistance design values,structural required limits and other checking standard are relatively simple.It is suggested that the multilevel checking standard appropriate for the Chinese national conditions and structural characteristics of the project can be given in the code.