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(一)土工格网碎石桩的结构用土工格网碎石桩处理软基,属于国内首创,既无现成规范、标准可循,亦无成熟的经验可供借鉴。因此,长沙交通学院在进行试验路段的软基处理以前,在室内进行了模型试验与模拟试验,为软基路段的设计与施工提供技术依据。土工格网碎石是用一层CE131型土工格网围成,中间填充碎石。为防止淤泥在渗透水压的作用下,流入碎石桩而堵塞排水通道,在CE131型土工格网的外侧还包裹了一层
(I) Structure of Geogrid Crushed Stone Pile The treatment of soft foundation by geogrid gravel pile belongs to the domestic initiative. There is neither ready-made norms and standards to follow and no mature experience is available for reference. Therefore, Changsha Jiaotong University conducted model tests and simulation tests indoors before conducting the soft foundation treatment for the test section, providing a technical basis for the design and construction of soft-ground sections. Geogrid gravel is surrounded by a layer of CE131 geogrid, filled with gravel in the middle. In order to prevent the mud under the action of seepage pressure, it will flow into the gravel pile and block the drainage channel, and also wrap a layer on the outside of CE131 geogrid