基于Finn液化本构模型的寒区堤防工程砂土液化数值模拟
|
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。
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.
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.
引文
[1] 唐永.基于MIKE模型的大辽河行洪能力分析[J].吉林水利,2018(8):58-62.
[2] 杨洪宁.大辽河营口市城区渡口至成福里小区段防洪治理工程措施浅析[J].陕西水利,2018(3):82-84.
[3] 李大争,金治雄,王理想.FLAC3D在地基砂土液化判别中的应用[J].华北水利水电学院学报,2013,34(2):64-67.
[4] 王根龙,林玮,蔡晓光.基于Finn本构模型的饱和砂土地震液化分析[J].地震工程与工程振动,2010,30(3):178-184.
[5] 李建宇.胖头泡堤防地基土的地震液化判别与分析[J].黑龙江水利科技,2014,42(2):42-43.
[6] XIE Sheng-bo,QU Jian-jun,LAI Yuan-ming,etal.Effects of Freeze-thaw Cycles on Soil Mechanical and Physical Properties in the Qinghai-TibetPlateau[J].Journal of Mountain Science,2015,12(4):999-1009.
[7] 马巍,王大雁.中国冻土力学研究50a回顾与展望[J].岩土工程学报,2012,34(4):625-640.
[8] 颜可珍.基于判别分析法的地震砂土液化预测研究[J].岩土力学,2010,30(7):2049-2052.
[2] 杨洪宁.大辽河营口市城区渡口至成福里小区段防洪治理工程措施浅析[J].陕西水利,2018(3):82-84.
[3] 李大争,金治雄,王理想.FLAC3D在地基砂土液化判别中的应用[J].华北水利水电学院学报,2013,34(2):64-67.
[4] 王根龙,林玮,蔡晓光.基于Finn本构模型的饱和砂土地震液化分析[J].地震工程与工程振动,2010,30(3):178-184.
[5] 李建宇.胖头泡堤防地基土的地震液化判别与分析[J].黑龙江水利科技,2014,42(2):42-43.
[6] XIE Sheng-bo,QU Jian-jun,LAI Yuan-ming,etal.Effects of Freeze-thaw Cycles on Soil Mechanical and Physical Properties in the Qinghai-TibetPlateau[J].Journal of Mountain Science,2015,12(4):999-1009.
[7] 马巍,王大雁.中国冻土力学研究50a回顾与展望[J].岩土工程学报,2012,34(4):625-640.
[8] 颜可珍.基于判别分析法的地震砂土液化预测研究[J].岩土力学,2010,30(7):2049-2052.