Automatic recording method for standard penetration test

Abstract

The invention relates to the technical field of standard penetration tests, and discloses an automatic recording method for a standard penetration test. The method comprises the following constructionsteps of: 1) installing a penetration amount measuring instrument and a hammering counter; 2) connecting a data box, respectively connecting a data processor with the penetration amount measuring instrument and the hammering counter, and wirelessly communicating the data processor with a server through a wireless transmitter and a network antenna; 3) newly establishing a test drill hole; 4) newlyestablishing a standard penetration position; (5) a cross-core hammer beginning to hammer, wherein for each time of hammering, the cross-core hammer triggering the hammering counter one time, the penetration amount measuring instrument automatically measuring the penetration depth of the penetration amount, and the data processor collecting the hammering number of the hammering counter in real time so as to feed back the penetration depth measured by the penetration amount measuring instrument to the server in real time; and (6) the cross-core hammer hammering repeatedly, and when the penetration depth measured by the penetration amount measuring instrument exceeds 45cm, the data processor stopping acquiring the data.

Description

technical field [0001] The patent of the present invention relates to the technical field of standard penetration test, specifically, to the automatic recording method of standard penetration test. Background technique [0002] Standard penetration test (standard penetration test, SPT, referred to as "standard penetration") is a kind of dynamic penetration test, and it is a method to measure the foundation bearing capacity of sand or cohesive soil at the construction site. [0003] In the standard penetration test, the main equipment used is the penetrator, the penetrating rod and the piercer. The penetrating rod generally uses a drill pipe with a diameter of 42mm, and the weight of the piercing hammer is 63.5kg. In actual operation, when the drilling tool drills to about 15cm above the test soil level, in order to avoid the test soil being disturbed, the drilling tool is taken out, the penetrator is connected to the lower end of the drill pipe, and put into the standard pen...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide an automatic recording method for standard penetration tests, aiming to solve the problem of using manual methods to record standard penetration tests in the prior art

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