Vacuum preloading and electroosmosis combined testing device and vacuum preloading and electroosmosis combined testing method

Abstract

The invention discloses a vacuum preloading and electroosmosis combined testing device. The vacuum preloading and electroosmosis combined testing device comprises a tempered glass model box, wherein a measurement hole site is formed on the tempered glass model box, a minitype pore water pressure gauge is arranged in the tempered glass model box and penetrates through the measurement hole site to be connected with an external instrument by an information wire, a plastic drainage plate is vertically inserted in the middle in the tempered glass model box, a reinforcing steel bar is inserted in the tempered glass model box, the reinforcing steel bar is connected with an anode binding post, a conductive copper wire is connected with a cathode binding post, a main drainage pipe is connected with a suction filtration bottle which is connected with a vacuum pump by a pipeline, a vacuum meter is arranged on the main drainage pipe, and the suction filtration bottle is arranged on an electronic scale; lateral displacement scales are marked on the tempered glass model box horizontally, and multiple lateral displacement scales are distributed on the tempered glass model box in the height direction. The vacuum preloading and electroosmosis combined testing device also provides a vacuum preloading and electroosmosis combined testing method. The vacuum preloading and electroosmosis combined testing device can be used for conveniently and rapidly simulating a soft foundation after being subjected to vacuum-electroosmosis combined treatment in a room, can accurately measure the vacuum degrees and the pore water pressures of soil bodies at different positions, and can clearly observe the bending change of the plastic drainage plate in a solidifying process of the soil bodies.

Description

[0001] technical field [0002] The invention relates to a vacuum preloading combined electroosmotic test device. The present invention also relates to a method for performing vacuum preloading combined electroosmosis test using the vacuum preloading combined electroosmotic test device. Background technique [0003] At present, in order to alleviate the tension of land use in coastal cities, a large amount of land needs to be formed by reclamation from the sea. The dredged land reclamation used for land reclamation generally adopts dredged silt from harbor basins and waterways, and is hydraulically dredged to form a land site with a moisture content of more than 80%, and the newly reclaimed site can even reach about 200%. In addition, due to hydraulic separation, the soil particles in the upper part of the weak soil foundation are extremely fine, mainly clay and colloidal particles, the connection between particles is very weak, and a strong soil skeleton structure has not ...

AI Technical Summary

Problems solved by technology

Although the existing model test device can simulate the vacuum preloading to strengthen the soft soil foundation indoors, it cannot observe the change of the drainage board, and the buried position of the sensor in the soil cannot be accurately controlled.

In addition, the export of a large number of sensor lines will increase the air leakage on the surface of the sealing film and weaken its sealing performance, so that the vacuum degree of the soil cannot meet the expected requirements

Images