【摘要】 文中采用人工激振,设计完成了简单工况下现场液化试验,并与干砂试验结果对比得到了孔压增长与土体表层加速度、剪应变的关系。试验结果表明:当孔压比为0.5时,液化开始显著影响土表加速度;当孔压比为0.6左右,液化土体剪应变幅值最大,而并非孔压比为1时幅值最大。以上结论同现有的室内振动台试验一致,说明了本试验是成功的。更多还原

【Abstract】 The in-situ liquefaction tests are designed and accomplished under artificial dynamic loading.Taking dry sand as a base,the relationships between pore water pressure and acceleration,soil shear strain are obtained.The tested results indicate that soil liquefaction greatly reduces surface acceleration amplitude when the pore water pressure ratio increases to 0.5.Shear strain amplitude of liquefied soil reaches the maximum when the pore water pressure ratio is about 0.6 rather than 1.0.These results are consistent with shaking table testing results,which demonstrates the test is successful.更多还原