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首页> 外文会议>International Conference on Coastal Engineering 2006(ICCE 2006); 20060903-08; San Diego,CA(US) >ANALYSIS OF AN UNEXPECTED GROIN FAILURE AT A LOW CRESTED DEFENCE SCHEME
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ANALYSIS OF AN UNEXPECTED GROIN FAILURE AT A LOW CRESTED DEFENCE SCHEME

机译：低峰防御方案中意外的谷粒故障分析

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摘要

This contribution analyses the structural failure of two groins that laterally confined a coastal defence scheme placed in Igea Marina beach (IT), where six emerged barriers were converted into one single low crested structure. The site has been monitored since the works started. Recent results from bathymetric surveys, sediment samplings and geotechnical tests are presented. The storm after which the groins failed is reconstructed and modeled by means of morphological simulations with MIKE 21.On the basis of the field surveys and of the computed bed level changes during the storm, it is concluded that the groin failure can not be justified only by urrents induced local scour but it was also caused by a soil　resistance decrease due to partial liquefaction.
机译：这项贡献分析了两个腹股沟的结构破坏，这些腹股沟横向限制了位于Igea Marina海滩（IT）的沿海防御计划，其中六个出现的屏障被转换为一个低顶结构。自工程开始以来，对该站点进行了监视。介绍了测深调查，沉积物采样和岩土测试的最新结果。用MIKE 21进行形态模拟，重建了腹股沟破裂后的暴风雨并进行了建模。根据现场调查和在暴风雨期间计算的床位变化，得出的结论是，腹股沟暴雨不能仅靠正当理由急流引起的局部冲刷，但这也是由于部分液化导致土壤阻力降低所致。

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