2 results about "Vertical displacement" patented technology

The invention belongs to the field of a geotechnical test in civil engineering, and concretely relates to a multifunctional testing apparatus for on-site determination of expansion of sulfuric acid salinized soil saline. The apparatus comprises a soil pond, a separator plate, an earth pressure box, a temperature sensor, a vertical displacement observation mark post, and a plastic pipe; a cross section of the soil pond is in a rectangular shape, and the soil pond is enclosed by adjacent two reinforced concrete walls and adjacent two masonry walls, the separator plate is vertically placed between two long edges of the soil pond, and the soil pond is separated to a compartment. The earth pressure box is buried at an inner side of the wall of the soil pond, the temperature sensor is buried ata to-be-detected soil sample in each compartment, and the vertical displacement observation mark post is vertically arranged at the center of the compartment. The through-holes are arranged at the wall at the bottom of two short edges of the soil pond, the through-hole is connected with the plastic pipe filled with a sodium sulfate solution, and the solution is penetrated into the to-be-detected soil sample through a middle sand cushion layer at the bottom of the soil pond. The multifunctional testing apparatus can be used for measuring expansion ratio and bulging force of different types of salinized soil under different temperatures and different lateral constrained conditions.