Ultrasonic measurement instrument for pile bottom sediment thickness

Abstract

The invention relates to an ultrasonic measurement instrument for pile bottom sediment thickness. The ultrasonic measurement instrument comprises a graduated measurement rope, wherein a measurement hammer is tied at one end of the measurement rope. The ultrasonic measurement instrument is characterized in that the measurement hammer is an ultrasonic measurement hammer; an ultrasonic emission device and an ultrasonic receiving device are arranged at an interval on the ultrasonic measurement hammer and connected with an ultrasonic processing device through ultrasonic probe wires respectively; the ultrasonic processing device comprises an ultrasonic generation processor and an ultrasonic detection processor. As transmission speeds of ultrasonic waves in different mediums are different, especially the transmission speed of the ultrasonic waves in soil greatly differs from that of the ultrasonic waves in water, an ultrasonic transmission speed signal in the ultrasonic receiving device is detected through the ultrasonic detection processor by utilizing the principle to determine a pit bottom mud-water interface and a sediment bottom, and the sediment thickness can be accurately calculated and has the precision capable of reaching millimeter level.

Description

【Technical field】 [0001] The invention relates to a pile bottom sediment measuring instrument after cast-in-place piles are formed in the field of building construction, in particular to an ultrasonic pile bottom sediment thickness measuring instrument. 【Background technique】 [0002] According to the building codes and construction requirements, in order to meet the bearing capacity of the cast-in-place pile, there are strict regulations on the thickness of the sediment at the bottom of the pile after the pile is formed. Therefore, to ensure the quality of the cast-in-place pile, the thickness of the sediment at the bottom of the pile must be accurately measured; The measuring device includes a metal measuring hammer tied at the bottom end of the measuring rope. The measuring rope is composed of an outer layer and a core layer. The outer layer is sleeved on the periphery of the core layer. The lower end of the jacket layer is connected with a vertical sleeve, the bottom end...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an ultrasonic pile bottom sediment thickness measuring instrument to solve the technical problem that the above-mentioned pile bottom sediment measuring instrument adopts an approximate estimation method, which often causes large human errors in the detection results and does not have real reliability.

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