摘要
为了研究穿黄隧道地基在地震和盾构机施工时震动引起砂层液化的可能性及防治措施,采用扰动样和原状样进行了液化试验和动力特性试验,研究结果表明:砂层在7度地震下的液化深度在17m内;在地震加速度amax为0.194g的作用下,隧道在深度30m处的非液化层,地震后最大沉降量约为11cm。该结果可供设计研究参考。
In order to investigate the possibility of liquefaction of sand layers in tunnel foundation caused by earthquake and vibration of shield machines during its eonstruction, a lot of dynamic tests were performed with disturbed and undisturbed samples. Test results show that the maxmum liquefaction depth in this sand foundation will be less than 17 m under seven degree of earthquake, and the maximum settlement value of non?liquefaction layer after earthquake at 30 m depth where the tunnel locates would be about 11 cm under the action of seismic acceleration being 1.94 g. The result may be used for designers' reference.
出处
《长江科学院院报》
CSCD
北大核心
2002年第B09期101-104,共4页
Journal of Changjiang River Scientific Research Institute
