Pile foundation penetration measuring device

Abstract

The invention discloses a pile foundation penetration measuring device. The pile foundation penetration measuring device comprises a fixing frame, a laser Doppler velocimeter, a control display and a cleaning device, wherein the fixing frame is used for being installed on the side edge of a pile foundation, the laser Doppler velocimeter is installed on the fixing frame and used for emitting first detection laser and second detection laser to the surface of the peripheral wall of the pile foundation and receiving reflected light emitted by the surface of the peripheral wall of the pile foundation, the control display is electrically connected with the laser Doppler velocimeter and is used for displaying the moving speed and the moving amount of the pile foundation, and the cleaning device is used for cleaning the peripheral wall surface of the pile foundation. According to the technical scheme, the pile foundation penetration measuring device can accurately monitor the penetration of a pile foundation through the laser Doppler velocimeter, high-precision automatic monitoring is achieved, the cleaning device is beneficial to guaranteeing the measurement accuracy and the construction quality, the labor cost is reduced, and meanwhile, the use safety of the laser Doppler velocimeter can be ensured by using the fixing frame, and the service life of the device is prolonged.

Description

technical field [0001] The invention is used in the technical field of pile foundation penetration measurement, and in particular relates to a pile foundation penetration measurement device. Background technique [0002] Pile foundation is a foundation type widely used at home and abroad. It has the characteristics of large bearing capacity, small settlement, and can bear vertical load, horizontal load, uplift force and vibration or dynamic action. During pile sinking construction, penetration is an important process parameter to control pile sinking, and the monitoring of penetration is also an important part of construction process control. [0003] The dynamic monitoring of pile foundation penetration has always been a technical problem. In the industry, total station measurement is used, or manual marking is used to record the process; there are also laser measuring devices installed on the top of the hammering pile foundation undercarriage. The distance meter is used t...

AI Technical Summary

Problems solved by technology

Compared with manual detection, these monitoring methods have made many improvements.

However, due to the large vibration of the pile foundation, the laser range finder cannot guarantee the accuracy requirements of the penetration degree at the millimeter level, and the measurement error is large, and the laser range finder is also easily damaged due to the vibration of the pile foundation.

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