Research on the Response Test of Monopile Shaking Table at Liquefaction Site
In order to investigate the damage of site liquefaction on pile foundation,large size shaking table test is carried out.The response laws of pore pressure,settlement of pile with relation to foundation,acceleration,pile bending moment and lateral displacement of superstructure during earthquake were analyzed.The test results show that:1)The excess pore pressure ratio of the foundation increased rapidly,and the sand gradually liquefied.The liquefaction caused the acceleration amplification factor of the pile to show a decreasing trend;2)At 0.5g,the horizontal displacement of the superstructure reached 33%of the pile diameter,and the horizontal displacement of the superstructure after the earthquake was 156%of the pile diameter;3)During the earthquake,During an earthquake,there was a sudden change in the bending moment of the pile between the liquefied and non-liquefied layers.After the earthquake,the horizontal displacement of the upper structure continued to increase,and the accumulated deformation after liquefaction of the site would have a serious impact on the stability of the structure.
万方数据
维普
