轻质硬壳海堤设计和稳性分析

Design of cross-section for light & hard-shelldyke and its reliability

针对软基堤坝易沉陷、滑移、倒塌、施工难、工期长等问题 ,提出了一种新型的筑堤结构 .该结构采用高强度材料作为外壳 ,以轻质材料放置于易沉滑的部位 ,松散材料填充坝体 .根据受力特性、构造要求、施工条件及抗滑稳定条件 ,拟解决结构断面设计的一些基本问题 ,并结合实例运用专业程序进行了对比计算分析 ,说明轻质硬壳堤坝比传统堤坝具有更高的可靠性 .

Paying respect to the sinking, movement and collapse of the soft embankment itself,overweight and looseness are major factors on the stability of the dyke,so the light & hard-shell dyke(LHD) is presented. It can be built with highstress materials outside and loose materials inside. Several problems about cross-section design are to be solved according to statics characters,structure requirements,performance conditions and the requirement of anti-slid stability. Then based on computing and analysis for an instance,it is concluded that the LHD possessed more overall stability than traditional embankment.;