双挡浪墙结构海堤的多道齿墙内力计算分析

Calculation and Analysis on Internal Force of Multichannel Key-wall

在秦山核电厂海堤加高工程中,堤顶挡浪墙设置内外两挡浪墙,并设置三道齿墙抵抗水平波浪力,设计过程中采用常规理论及有限元法计算多道齿墙受力,根据计算成果分析研究认为,对复杂结构进行合理简化、假定,采用常规理论计算可满足工程设计需要,水平荷载主要由齿墙侧被动土压力承担,多道齿墙受力主要与被动土压力侧土体刚度有关,填土刚度大,被动土压力发挥程度高,承担的水平土压力相对较大.

In the heightening project of Qinshan Nuclear Power Plant,an inter-outer wave wall is constructed on the top of the seawall,as well as three courses of key-wall to resist the horizontal wave force.In the design process,conventional theory and finite element method is adopted to calculate multichannel tooth wall stress.The calculation results prove it reasonable to simplify and assume a complex structure,and conventional theoretical calculation can meet the requirements of engineering design.The horizontal load is mainly composed of wall lateral passive earth pressure,while the multichannel tooth wall stress is mainly from passive earth pressure and lateral stiffness of soil.The stiffer the filled soil is,the higher degree the passive earth pressure plays,therefore,the relatively larger the soil pressure will be.