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文章以南水北调焦作1段第II施工标渠道液化砂土段成功使用挤密砂石桩处理为例,介绍了软弱地基处理的一种方法。挤密砂石桩主要靠桩的挤密和施工中的振动作用使桩周围土体的密度增大,从而使地基的承载能力提高,压缩性降低;当被加固土为液化地基时,由于土的空隙比减小、密实度提高,可有效消除土体的液化现象。
In this paper, the successful application of compacted gravel piles to the liquefied sands section of No. 1 construction tunnel of the first section of Jiaozuo water diversion project of South-to-North Water Diversion Project is an example to introduce a method of treating soft foundation. Compacted sandstone piles mainly rely on the compaction of the piles and the vibration effect during construction to increase the density of the soil around the piles so as to improve the bearing capacity of the foundation and reduce the compressibility. When the reinforced soil is a liquefied foundation, The void ratio decreases, the density increased, which can effectively eliminate the liquefaction of soil.