Preloading Method
It is suitable for the treatment of saturated clay foundations such as silt, silty soil and flushing soil. According to the pre-pressing method, it is divided into a preloading method and a vacuum preloading method. Preloading pre-compressed plastic drainage belts or sand well foundation preloading and natural foundation preloading.
When the thickness of the soft soil layer is less than 4m, the natural foundation preloading method can be used. When the thickness of the soft soil layer exceeds 4m, it should be treated by vertical drainage preloading method such as plastic drainage belt and sand well. For vacuum preloading, a drainage shaft must be placed in the foundation.
The preloading method is mainly used to solve the problem of settlement and stability of the foundation.
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