Single point settlement gage

Abstract

The invention discloses a single-point settlement gauge comprising a settlement plate, an electrical measurement displacement sensor, a measuring bar, an anchor head and a bottom layer anchor head, wherein one end of the electrical measurement displacement sensor is connected with the bottom of the settlement plate, the other end of the electrical measurement displacement sensor is connected with the anchor head by the measuring bar, and the other end of the anchor head is connected with the bottom layer anchor head by a lengthening bar. The single-point settlement gauge has the advantages of simple and compact structure, low cost, fast and accurate automatic measurement and long-period monitoring.

Description

technical field [0001] The invention mainly relates to the technical and instrument fields of detecting foundation settlement, in particular to a single-point settlement meter. Background technique [0002] Foundations, especially the subgrades of high-speed railways and expressways, will undergo certain settlement under external loads or when their internal stratum conditions change. Excessive settlement will affect driving comfort and even endanger driving safety. Therefore, the settlement of subgrade and road surface must be limited within a certain range, and corresponding measures must be taken to deal with it when it exceeds the limit. The existing settlement observation method is to anchor a circular settlement tube to the bedrock, put a magnetic ring on the periphery of the settlement tube, and bury it at the observation level. When the foundation sinks, the magnetic ring can sink synchronously with the foundation and the settling tube will not sink, and the magneti...

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: 1. The position where the settlement tube is buried cannot be compacted, and the roadbed usually needs to be compacted. If the measurement site is not compacted together with the road surface, the measured value will be inconsistent with the actual value, resulting in 2. During detection, the magnetic probe must be lowered from the hole of the settling tube to measure the position of the magnetic ring, so it can only be measured manually, and has poor accuracy, heavy workload, and low efficiency. Disadvantages; 3. Real-time measurement cannot be carried out during driving, and long-term operation monitoring cannot be carried out

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