Automatic monitoring method for layered settlement of vacuum preloading foundation

Abstract

The invention discloses an automatic monitoring method for layered settlement of a vacuum preloading foundation. The automatic monitoring method comprises the following steps that (1) the length and the width of a mounting base plate are determined; (2) a plurality of monitoring point positions are determined; (3) the burying depth and interval of each sensing unit in the monitoring point position are determined, and the assembly of the sensing units is completed; (4) a wiring ring is placed in a sliding cylinder, and the length of a pull rope is adjusted to complete the assembly of measuring units; (5) a mounting substrate is driven to a designed depth in a mode of being vertical to the ground; (6) each measuring unit is electrically connected with a signal transmitting unit and is fixed to the mounting substrate; and (7) a signal sending device collects electric signals output by an encoder and sends the electric signals to a signal collection terminal for processing and generating the settlement volume of each soil layer. Settlement of the soil layer drives the wiring ring to move downwards in the sliding cylinder, the pull rope is driven to generate displacement, linear displacement is converted into the electric signal through the encoder, then the electric signal is processed to generate the soil layer settlement amount, real-time monitoring is achieved, and continuity and real-time performance of monitoring data are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of ground monitoring, and in particular relates to an automatic monitoring method for layered settlement of vacuum preloaded ground. Background technique [0002] With the large-scale advancement of land reclamation projects, large-area dredging soft soil foundations need to be reinforced. Vacuum preloading is currently the most effective and economical method for soft soil foundation reinforcement in water transportation projects. During the vacuum preloading process, the soft foundation will settle. This settlement is characterized by large compression of shallow soil and small compression of deep soil, and inconsistent consolidation characteristics and settlement of each soil layer. In the construction process of soft foundation treatment, it is of great significance to control the progress of the project, ensure the quality and safety of the project, and inspect the construction plan by monitoring the se...

AI Technical Summary

Problems solved by technology

[0004] (1) Affected by the differential settlement deformation of the deep soil, the settlement pipe is bent and deformed, which affects the accuracy of the monitoring data;

[0005] (2) It is necessary to regularly review the elevation of the pipe top at the settlement point, and calculate the settlement amount of each settlement ring. The reference point must be prepared in advance during the measurement. Personnel spend a lot of time and physical strength, and due to the long measurement distance, continuous turning points are prone to measurement errors, and data collection is very inconvenient;

[0006] (3) It is necessary to drill and bury the settlement pipe, which is time-consuming, laborious and costly;

[0007] (4) It is easily affected by the bad weather on site, and it is impossible to perform measurement, which affects the real-time and continuity of monitoring data

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