【摘要】 饱和土在自然排水条件下随着剪切作用而发生的含水量增大的行为和过程被称为剪切吸水现象。本文发展了一种新的试验方法,成功地再现了从较松到密实状态的饱和砂土在振动液化后的剪切吸水现象,探讨了剪切吸水速率对饱和砂土液化后应力应变关系的影响。试验结果表明,具有相同密度的饱和砂土,其液化后的应力应变关系随剪切吸水速率的不同而呈现出硬化、理想塑性及软化的不同变化。文中给出了判定这些不同的液化后应力应变响应产生的条件更多还原

【Abstract】 The phenomenon that water content redistribution occurs in a saturated sand due to the application of shear in naturally drained conditions is referred to as “water absorption in shear”. A new test method was developed to reproduce the water absorption in shear for post liquefaction sands over a wide range from looser to dense density. The test results showed strong dependency of the post liquefaction stress strain response on rates of the water absorption in shear, and the others gave out the conditions for judging whether large post liquefaction deformation occurs.更多还原