Portable folding-type inclination survey device for precast pile with round or ring-shaped cross section

Abstract

The invention discloses a portable folding-type inclination survey device for a precast pile with a round or ring-shaped cross section. The inclination survey device comprises a support mechanism, a monitoring mechanism and a human-computer interaction platform, wherein the support mechanism comprises four length-adjustable columns; the monitoring mechanism comprises a monitoring beam and a pair of monitoring arms; the pair of monitoring arms is hinged with two ends of the monitoring beam and can rotate on the horizontal plane around the monitoring beam; at least two hole grooves are formed in the middles of the monitoring beam and the pair of monitoring arms, and used for arranging a ranging sensor; cavities are formed in the bottoms of the monitoring beam and the pair of monitoring arms; the four columns are hinged with the bottoms of two ends of the monitoring beam and the bottoms of free ends of the pair of monitoring arms, and can be placed in the cavities; the human-computer interaction platform is detachably connected with the monitoring mechanism and comprises a display screen and a working table; the working table is connected with the signal output terminal of the ranging sensor, and is used for receiving measurement signals of the ranging sensor and input horizontal position signals of the ranging sensor and calculating the inclination angle and the tendency of the precast pile; and the result is displayed through the display screen.

Description

technical field [0001] The invention relates to the inclination measurement of prefabricated piles, in particular to a portable folding type prefabricated pile inclination measurement device with a circular or circular cross-section 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...

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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