Level instrument and foundation pile static test system based on static force leveling and method of foundation pile static load

Abstract

The invention relates to a level instrument and a foundation pile static test system based on static force leveling and a method of a foundation pile static load. A non-contact static level instrument is sampled, the service life is long, stability is good, and anti-interference is high. A datum beam, a datum pile, and a displacement meter are replaced with a measuring static force level instrument, and a datum static force level instrument, the installation difficulty in a traditional method is avoided, good adaptability to the environment is achieved, and normal work can be conducted without special requirements, According to the foundation pile static test system, the distance between a datum point and a measuring point of can be increased to tens of meters, and the effect of the measuring point on the datum point in the process of loading or unloading is excluded completely. According to a measuring method, interference is reduced, errors are reduced, accuracy is improved, measuring is convenient, and adaptability is strong, and the method is suitable for a tension and compression load resistance test of large diameter and tonnage piles, dealt with a load test of composite foundations with a large area, and dealt with a load test of natural foundations and artificial foundations with large areas.

Description

technical field [0001] The invention relates to a measuring device and method, more specifically to a measuring system and a measuring method for eliminating the influence of a reference beam in a foundation pile static load test by using a novel high-precision magnetostrictive static level. Background technique [0002] The quality of foundation foundations (such as pile foundations, various natural or artificial treatment foundations) mainly depends on two factors, namely bearing capacity and pile body quality, and bearing capacity is the main factor in the two. Accurate testing of single pile bearing capacity plays a pivotal role in the foundation design and even the superstructure design of various buildings. [0003] Static load test is currently one of the most direct and reliable methods to determine the bearing capacity of pile foundations. The static load test refers to applying axial pressure, axial upward pullout force step by step on the top of the pile, or appl...

AI Technical Summary

Problems solved by technology

The section steel of this length is extremely inconvenient in use. Different lengths of benchmark beams should be selected for different pile foundation static load experiments. If the beam is partially bent or damaged during daily use, the reference beam can only be replaced as a whole, which is very uneconomical

Moreover, after the benchmark beam is lengthened, due to its insufficient rigidity, its deflection is also very significant due to the influence of temperature changes

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