Plastic drainage board It is a waterproof material commonly used in highways, railways, airports, water conservancy and other projects. It can solve the consolidation of soft soil and improve the bearing capacity of foundation.
1. Plastic Drainage plate The structure of
Plastic drainage board, made of polystyrene ( HIPS）、 Polyethylene ( HDPE） Or polyvinyl chloride ( PVC） Ribbon products made of such polymer materials. Its structure is mainly composed of an extruded plastic core board in the middle and a non-woven geotextile filter layer on both sides. The plastic core board serves as a drainage channel, and its cross section is in a parallel cross shape, which has very good support and drainage performance; The geotextile filter layer can prevent soil particles from entering the drainage channel and ensure unimpeded drainage.
2. Working principle
The working principle of plastic drainage board is based on its unique structural design and construction method. During the construction process, the drainage board is vertically driven into the soft soil foundation by the board inserting machine to form a vertical drainage channel. Then, under the action of the upper preloading load, the void water in the soft soil foundation is squeezed out, discharged upward along the plastic core board, and finally flows to other places through the upper sand layer or horizontal plastic drainage pipe to realize the accelerated consolidation of the soft soil foundation.
3. Drainage process
1、Insert the drainage board: Use the board inserting machine to drive the plastic drainage board vertically into the soft soil foundation to ensure that the drainage board is in close contact with the surrounding soil to form an effective drainage channel.
2、Apply preloading load: After the drainage board is driven, apply preloading load to the foundation by heap loading or vacuum preloading. Under the action of preloading load, the void water in the foundation is squeezed out to form water flow.
3、Water flow guidance: The squeezed water flow flows upward along the plastic core board and prevents soil particles from entering the drainage channel through the filtration effect of the geotextile filter layer to ensure smooth water flow.
4、Centralized discharge: The water flow finally collects into the upper sand layer or horizontal plastic drainage pipe, and is centrally discharged to the outside of the foundation through the drainage system to achieve accelerated consolidation of the soft foundation.
4. Advantages and applications
1、High drainage efficiency: The vertical drainage channel formed by plastic drainage board can shorten the drainage path, improve drainage efficiency, and accelerate the consolidation of soft foundation.
2、Convenient construction: The construction of the drainage board is simple and fast, not affected by the temperature, has a short construction period, and does not need maintenance after forming.
3、Low cost: Compared with traditional drainage methods, plastic drainage boards are lower in cost and can save a lot of materials and labor costs.
4、Environmental protection and energy saving: the drainage board material can be recycled and reused, which meets the environmental protection requirements; Its drainage performance can reduce building loads and reduce energy consumption.
Post time: Feb-28-2025
