高真空击密联合深层降水法在液化性软基中的应用

Applications of the method of high vacuum densification combined deep precipitation in liquefaction of soft ground

为了消除软基的液化性,采用高真空击密法联合深层降水处理,通过对水位和沉降进行观测,分析了固结沉降规律,采用静力触探法对土体进行液化判别,计算了静力触探值和液化土层的厚度。结果表明:完全消除了场地内8m深度内土层的液化问题,基本消除了场地内8m以下深度的土层液化问题,提高了软土地基的承载力及稳定性,在节约了工程造价的同时改善了表层吹填土性,为类似工程提供了新的、有效的参考依据。

In order to eliminate the liquefaction of soft ground, by the treatment of High Vacuum Densifieation combined deep precipitation, by observing the water level and subsidence, this paper analyzes the consolidation settlement laws, liquefaction by CPT method on soil, calculates the CPT value and the thickness of liquefied soil. The results show that soil liquefaction has been completely eliminated within the 8 m depth of field, which improves the bearing capacity of soft soil and stability, saves project cost, improves the surface soil reclamation and provides a new and effective reference for similar projects.