Settlement monitoring device and method for high-support formwork

Abstract

According to the settlement monitoring device and method for a high-support formwork, a datum point is arranged at the lower end, stretches into and is fixed to a stand column of a bed rock layer, thestand column is supported by the bed rock layer with stable geological properties, the datum point arranged on the stand column cannot settle due to settlement of a soft soil layer in a correspondingarea, and therefore it is guaranteed that the datum point is kept still all the time; monitoring points are arranged on the high-support formwork and synchronously settle along with the high-supportformwork; an unmanned aerial vehicle, a camera and a laser range finder are matched, the vertical distance between the laser range finder and the reference point is H, the linear distance between thelaser range finder and a monitoring point is measured through the laser range finder, and the corresponding first linear distance L1, the corresponding second linear distance L2, the corresponding first angle [ alpha] and the corresponding second angle [beta] are obtained in sequence to be used for calculation and analysis, the vertical height change value D of the monitoring point is obtained, and therefore whether sedimentation happens to the high-support formwork or not and the sedimentation amount are accurately judged.

Description

technical field [0001] The invention relates to the technical field of building construction monitoring, in particular to a settlement monitoring method and device for high formwork. Background technique [0002] With the development of social economy, the scale of construction projects is getting larger and larger, and more and more engineering construction needs to use high-support formwork auxiliary operations. The height of high formwork generally ranges from a few meters to more than ten meters, and some are even as high as tens of meters. Generally speaking, the higher the height of the high-support formwork, the greater the load-bearing capacity. During the construction process, the high-support formwork system is more likely to collapse. Once the high-support formwork system collapses during the construction process, it will Causing the mass death and injury of the operators on it, leading to larger or even major construction safety accidents. Therefore, during the...

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Problems solved by technology

[0004] Among them, the total station is based on the principle of optical testing. Although it can roughly realize the settlement monitoring of most high-supported forms, it still has the following deficiencies: 1. In the process of monitoring the overall settlement of the forms, due to the stability of the soft soil layer It is weak and prone to local changes due to the rise and fall of the water level or the effect of external pressure, so the reference point set on the surface of the soft soil layer (or called the ground) (the reference point refers to the need to keep still during the monitoring process) The reference point) is easy to settle with the settlement of the surface of the soft soil layer, resulting in its own settlement error and affecting the reliability of monitoring data

2. When the internal rods of the high-support formwork are dense, it is difficult to find a suitable measuring point for the total station to realize all-round one-point measurement; Monitoring labor costs are high

However, there are still deficiencies in the method of using the laser range finder to monitor the high branch form. The reason is that the first laser range finder is installed on the top of the high support form above the reference point, and by monitoring the distance between it and the reference point In addition to the settlement, the high-branch mode may also be tilted. Once the tilt occurs, the laser emission angle of the first laser rangefinder will follow and change, and it will no longer be vertically opposite to the reference point, resulting in monitoring The distance to be reached is no longer the vertical distance, which will lead to deviations in monitoring results (and the greater the inclination angle, the greater the deviation), which will affect the accuracy of monitoring data and eventually lead to the possibility of safety misjudgment

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