强浪作用下土体液化的土质海堤稳定性分析

发布时间：2018-05-19 19:53

  本文选题：土质海堤 + 波浪作用　； 参考：《水运工程》2016年07期

【摘要】：在台风、风暴潮等海况中的强风浪作用下,土质海堤常发生破坏甚至决堤。考虑海堤土体在高水位波浪作用时发生液化的情况,用Geo-slope软件计算海堤整体滑动稳定性的安全系数,并与高水位静水状态、无波浪作用低水位时和波浪作用液化后低水位时3个工况计算的海堤安全系数进行比较分析。4个工况计算的安全系数分别为2.226、2.392、2.082和2.056。结果表明,波浪作用造成土体液化时,对海堤整体稳定性的影响并不明显,而临海侧低水位时对海堤整体稳定性的影响则很显著;强风浪情况下海堤的决口等破坏并不是由于波浪作用造成土体强度降低引起海堤整体滑动所导致的,具体机制仍需进一步研究。
[Abstract]:In typhoon, storm surge and other sea conditions, the soil seawall is often destroyed or even broken. Considering the liquefaction of the seawall soil under the action of high water level wave, the safety factor of the overall sliding stability of the seawall is calculated by using Geo-slope software, and it is compared with the static water state of the high water level. The safety factors of seawall calculated under low water level without wave action and low water level after wave liquefaction are compared and analyzed. The safety factors calculated under four working conditions are 2.226 ~ 2.392n 2.082 and 2.056 respectively. The results show that the effect of wave action on the overall stability of the seawall is not obvious, but the influence of the low water level on the overall stability of the seawall is very significant. The breakage of seawall under strong wind and wave condition is not caused by the decrease of soil strength caused by wave action and the whole sliding of seawall. The concrete mechanism still needs to be further studied.
【作者单位】： 海洋环境与生态教育部重点实验室;中国海洋大学环境科学与工程学院;山东省地质科学研究院;
【基金】：山东省地勘基金项目(鲁勘字(2013)055)
【分类号】：U656.314
，

本文编号：1911417