【摘要】 地震条件下地基砂土液化研究对堤坝设计和运行管理具有重要意义。文章以位于地震高烈度区的大辽河营口段为例,通过模拟计算方法对寒区地震条件下的堤防工程地基砂土液化问题进行研究。结果表明:堤坝地基浅部土层在地震作用下更容易发生液化现象,冻土层对抑制地震作用下的地基砂土液化现象具有一定的作用;饱和地基在地震作用下更容易发生砂土液化现象。更多还原

【Abstract】 Study on the liquefaction of sandy soil foundation under earthquake conditions is of great significance to the design and operation management of embankment. Yingkou section of Daliaohe River in the high seismic intensity area is taken as an example. The problem of sandy soil liquefaction of embankment foundation under cold region earthquake condition is studied by means of simulation calculation method. The results show that the soil layer in the shallow part of the embankment foundation is more prone to liquefaction under the earthquake action, and the permafrost plays a certain role in inhibiting the liquefaction of foundation sandy soil under the earthquake action. It is more likely to develop sandy soil liquefaction on saturated foundation under earthquake action.更多还原