High-pressure, waterproof and self-stabilized type load testing device for deep soil layer

Abstract

The invention relates to load parameter measuring technology of deep soil layers, and discloses a high-pressure, waterproof and self-stabilized type load testing device for the deep soil layer. The device comprises a driving system, a data recording instrument, a load cell and a concrete self-stabilizing block; the data recording instrument and the driving system are connected with the load cell through pipelines and used for acquiring the load data and driving the load cell to run, wherein the load cell comprises a bearing plate, a cell body, a hydraulic mechanism and a sensor; the bearing plate is connected with the hydraulic mechanism and driven by the hydraulic system to linearly move so as to transmit pressure to the soil layer; the hydraulic mechanism is sealed into the cell body, and the cell body is formed into the concrete self-stabilizing block by pouring; the sensor is connected with the data recording instrument and used for transmitting load data; the concrete self-stabilizing block is used for keeping the load cell stable and balanced, preventing the load cell from being inclined, and sealing the load cell; the load cell and the concrete self-stabilizing block are of a symmetric structure and are symmetrically overlapped relative to a shaft. With the adoption of the device, the load parameters of the soil layer can be tested.

Description

technical field [0001] The invention relates to a technology for measuring load parameters of deep soil layers, in particular to a high-pressure waterproof self-stabilizing load testing device for deep soil layers. Background technique [0002] The bearing capacity of the foundation soil layer is the most important index for civil engineering design calculation. However, so far, all methods for determining the bearing capacity of foundation soils are only suitable for shallow and middle soil layers (soil depth ≤ 40m), and there is no method and field test device for determining the bearing capacity of deep soil layers. With the continuous development of my country's construction industry, more and more civil engineering projects have entered ultra-deep formations. In order to make the design calculation of ultra-deep foundation safer, more stable and more reasonable, and reduce blindness, it is necessary to solve the key problems of deep soil bearing capacity and deformatio...

AI Technical Summary

Problems solved by technology

In the prior art, the bearing capacity of the upper and lower piles is generally tested by embedding pressure devices and sensors in reinforced concrete piles by applying pressure to the piles, but it does not have the ability to test the bearing capacity and deformation characteristics of soil in deep soil layers

The box body and the pile body of the existing measuring device cannot be independent of each other, and can only test the bearing capacity of the upper and lower piles, but cannot test the bearing capacity of the soil at any depth, and it is not capable of testing the bearing capacity and deformation characteristics of the soil in deep soil layers ability, does not have self-stabilization ability, cannot resist overturning and anti-slope

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