A soil layer settlement measurement device

Abstract

The invention provides a device for measuring layered settlement of a soil mass. The device comprises a model box, a settlement measuring assembly and a pressurizing device. The model box is of a cubic structure with an opening in the top end. The settlement measuring assembly comprises a base, a positioning rod, settlement pipes and a displacement sensor. The settlement pipes are different in external diameter and height, two positioning slide ways are carved in the inner wall of the pipe diameter of each settlement pipe, and rolling balls are embedded into the positioning slide ways. The displacement sensor is connected with a sensor frame to be fixed to the positioning rod, pointers are in lap joint with L-shaped slices, and a wire is connected to a PC. The multiple settlement pipes are sequentially arranged on a body reference rod in a sleeving mode in an external-diameter-increasing order, wherein the heights of the settlement pipes are determined according to the measured depth of soil layers. The pressure of the soil layers is transmitted through a hydraulic pump, and layered settlement data of the soil layers are collected through the PC. By means of the settlement measuring device, single-hole-and-multi-point settlement measuring of the soil mass is achieved, layered settlement of the soil layers can be well measured, and the device is quite suitable for indoor model-box testing.

Description

technical field [0001] The invention relates to the technical field of soil engineering model tests, in particular to a soil layered settlement measurement device. Background technique [0002] In my country's coastal areas, many engineering foundations are often formed by using soft soil after reinforcement treatment. Because soft soil has the characteristics of high compressibility, large void ratio, and low permeability, it will cause irregular settlement of buildings. The cracking of the wall caused great damage to the stability of the building. In order to control the stability of soft soil foundation and ensure the safety of buildings, it is very necessary to test the settlement of foundation soil. Due to the long period, high cost and many influencing factors of the field test, the indoor model test has become the main research method in the field of scientific research. The indoor model test is an important part of the geotechnical engineering test. In addition to t...

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Problems solved by technology

The existing problem is that when it is required to measure multiple measuring points with different depths in the soil layer, multiple settlement tubes need to be inserted. Due to the limited surface area of ​​the soil in the model box, it is difficult to avoid the soil squeezing effect formed between the rods. , affecting the accuracy and reliability of the measured values

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