High pier template platform construction sag monitoring and alarming device

Abstract

The invention discloses a high pier formwork platform construction sag monitoring and alarming device which comprises a high pier construction platform, a monitoring cone frame, a heavy hammer reference assembly and a calibration assembly fixed to the ground, the monitoring cone frame is fixedly installed on the bottom face of the high pier construction platform, and the calibration assembly is located vertically below the heavy hammer reference assembly. The counter weight reference assembly is movably sleeved on the inner side of the monitoring cone frame, and the monitoring cone frame comprises a fixed substrate, a conical sleeve frame and a plurality of magnetic induction monitoring assemblies. In the invention, the heavy hammer reference assembly and the calibration assembly are additionally arranged on the bottom surface of the high pier construction platform, so that after the high pier construction platform is subjected to sag inclination, the heavy hammer reference assembly is still kept in the sag opposite direction of the calibration assembly; the magnetic induction effect is generated through the relative movement of the vertical static rod and the moving sleeve rod to sense the slight inclination and deviation of the high pier construction platform and the monitoring cone frame, and therefore an alarm is given in time to prompt constructors.

Description

technical field [0001] The invention relates to the technical field of road and bridge engineering construction, in particular to a construction sag monitoring and alarm device for a high pier formwork platform. Background technique [0002] For the construction of bridges with high piers and cover beams in mountainous and river valley areas, if the ground support cannot be used due to the topography and geological reasons of the bridge location, the pin-rod type, hoop type or corbel type support structure can be used. The pin method needs to reserve a hole through the pier column, which will be filled with concrete in the later stage. The quality of the filled concrete is difficult to guarantee, and the circular section of the pin has poor bending resistance and low bearing capacity. Using the hoop method, the value of the friction coefficient between the hoop and the pier column is difficult to grasp, and the hoop is prone to torsion during construction, resulting in defle...

AI Technical Summary

Problems solved by technology

The pin method needs to reserve a hole through the pier column, which will be filled with concrete in the later stage. The quality of the filled concrete is difficult to guarantee, and the circular section of the pin has poor bending resistance and low bearing capacity.

Using the hoop method, the value of the friction coefficient between the hoop and the pier column is difficult to grasp, and the hoop is prone to torsion during construction, resulting in deflection and inclination of the formwork platform of the high pier during the construction process, which seriously affects the overall structure of the formwork platform of the high pier Strength and easy to cause deviation to the construction sag and affect the construction accuracy of high piers

[0003] At present, the construction sag of the high pier formwork platform is mainly monitored by the regular measurement of the construction personnel. The observation

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