Geotechnics plastic draining plate with top box used for vacuum prepressing

Abstract

The present invention which is used for vacuum preloading consolidation relates to an earthwork plastic drain board with a top box, and belongs to the construction engineering technical field. The present invention comprises the earthwork plastic drain board, a plastic box, a hose, a guidance adhesive tape and a cone shaped one-way valve. The hose and the earthwork plastic drain board are connected through the plastic box, and meanwhile, the hose is connected with a vacuum-pumping device. The guidance adhesive tape is connected and fixed with the earthwork plastic drain board, and the cone shaped one-way valve is arranged inside the hose. The present invention does not need to worry about the quality of films as well as the potential adverse effects, in addition, the vacuum preloading consolidation can be processed in part of the area, and thus the sealing problem of the whole processing area is not required to be considered especially.

Description

technical field [0001] The invention relates to a component in the technical field of construction engineering, in particular to a geotechnical plastic drainage board with a top box used for vacuum preloading consolidation. Background technique [0002] Since the Swedish scientist Kjellman proposed the method of using atmospheric pressure (vacuum preloading) to drain and consolidate soft soil foundations in 1952, engineers from many countries in the world have developed various methods for the soft soil foundation conditions of their respective countries. Vacuum preloading technology has developed from a single vacuum preloading method to vacuum combined surcharge, vacuum combined precipitation, etc., and has been gradually applied to water conservancy, municipal administration, roads, harbors, Various fields such as the rapid treatment of dredged silt have achieved huge economic and social benefits. [0003] The traditional vacuum preloading technology is to first drive pl...

AI Technical Summary

Problems solved by technology

The use of this plastic drainage board for vacuum preloading consolidation treatment requires an air-tight air-water isolation film. This supporting film may have the following defects: (1) If there is a foundation with good air permeability and water permeability on the surface, In order to prevent air leakage, the sealing film must be embedded in a deeper low-permeability foundation, or set up in this layer of soil to the lower partition mud wall; and the partition wall must be set along the entire perimeter of the area to be preloaded

Such a construction method is very uneconomical, and sometimes the sealing effect cannot be guaranteed.

(2) For the method of combining embankment load and vacuum load, although the lateral displacement and surface cracks of the foundation during preloading consolidation can be reduced, once the embankment is covered with a film, any damage to the film and air leakage cannot be detected With repair, sometimes it greatly reduces the vacuum efficiency

However, this method needs to build a water collection well, which not only increases the cost, but also needs to be well solved for the sealing of the water collection well.

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