Automatic inclination measurement device for precast pile with rectangular or hollow rectangular cross section

Abstract

The invention discloses an automatic inclination measurement device for a precast pile with a rectangular or hollow rectangular cross section. The automatic inclination measurement device comprises a supporting mechanism, a monitoring adjustment mechanism and a man-machine interaction platform, wherein the monitoring adjustment mechanism comprises a frame-shaped protection plate; the protection plate is horizontally arranged by the supporting mechanism and provided with eight sliding grooves in the same horizontal plane; a distance measurement sensor is mounted in each sliding groove and used for measuring the distance between one point on the outer surface of the precast pile and the distance measurement sensor; every two distance measurement sensors in the eight distance measurement sensors form a group and are arranged in parallel; any two adjacent groups of distance measurement sensors are orthogonally arranged; the man-machine interaction platform comprises a display screen and an operation platform; and the operation platform is connected with the signal output end of each distance measurement sensor and used for receiving a measurement signal of each distance measurement sensor and an input horizontal position signal of each distance measurement sensor, calculating an inclined angle and an inclined direction of the precast pile and displaying the inclined angle and the inclined direction by the display screen. The automatic inclination measurement device can be used for high-precision measurement of the inclined direction and the inclined angle of the precast pile with the rectangular or hollow rectangular cross section, and is low in cost, convenient to dismount and reusable.

Description

technical field [0001] The invention relates to pouring of prefabricated piles, in particular to an automatic inclination measuring device for rectangular or hollow rectangular section prefabricated piles used in the pouring process. Background technique [0002] At present, due to the unevenness of the site, the large slope, the inclination of the pile driver itself, and the inability to stabilize the pile, the pile foundation, especially the prefabricated pile, often inclines to varying degrees during the pouring process. Excessive inclination of the pile foundation will affect its bearing capacity, and even make the pile foundation scrapped, resulting in huge economic losses. Therefore, it is particularly important to develop an instrument that can monitor the inclination and inclination of the pile foundation in real time. [0003] Before the present invention, the measurement of pile foundation inclination is generally divided into two types of indirect method and dire...

AI Technical Summary

Problems solved by technology

[0010] (1) The accuracy is not high enough

Especially for the indirect method of inclination measurement (such as the above-mentioned Rayleigh wave method and inclined echo method), due to the common factors such as uneven pile material and many cracks when the elastic wave propagates in the pile body, it is easy to cause the wave to distort in the direction of propagation. Deviation, which makes the measured data unreliable;

[0011] (2) The scope of application is relatively limited

The application objects of the above-mentioned inclinometer methods have limitations, for example, the inclinometer method and the caliper method are only applicable to prefabricated pipe piles and cannot be used for prefabricated solid piles;

[0012] (3) The operation is more cumbersome

[0013] (4) The test components of the direct method may fall off or be damaged at any time during the filling process of the prefabricated piles. Once damaged, the testing instrument will not be able to be used, resulting in the deflection generated during the subsequent filling process of the prefabricated piles will not be able to be controlled;

[0014] (5) Higher cost

Both caliper and gyroscope inclinometer devices have relatively high cost, so that the application range of inclinometer work is affected by capital and cost;

[0015] (6) The degree of automation and synchronization is not high

Real-time monitoring is seldom satisfied in the existing technologies. For example, the elastic wave method can only measure the instantaneous deflection of the pile foundation, but cannot carry out real-time and continuous detection of the deflection of the pile foundation;

[0016] (7) Reusability is not high

[0017] (8) Difficult to process and maintain

Some instruments with complex structures (such as gyroscopes) need to be repaired by designated manufacturers and repair shops once they are damaged during use. Generally, they cannot be repaired on site, which causes delays in construction and increases in costs.

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