High strain test data-based tubular pile vertical bearing capacity analysis method and system

Abstract

The invention provides a high strain test data-based tubular pile vertical bearing capacity analysis method and system. The method comprises the following steps of: obtaining mass high strain test data and extracting mechanical parameters in the high strain test data to construct a basic database; classifying and calculating the mechanical parameters in the basic database according to belonging soil layer types by utilizing a big data analysis technology, so as to obtain a standard mechanical parameter corresponding to each type of soil layers; dividing a to-be-analyzed tubular pile into N tubular pile units with lengths of Li and diameters of d by utilizing finite element analysis; constructing a pile side load transfer function of each tubular pile unit; constructing a pile tip load transfer function of each tubular pile unit; calculating pile side resistance and pile tip resistance; enabling the pile side resistance and the pile tip resistance to act on each node of the tubular pileunits, drawing a Q-S curve of the to-be-analyzed tubular pile according to the action result, determining an ultimate bearing capacity of the to-be-analyzed tubular pile according to the Q-S curve, and outputting a bearing capacity character analysis result of the to-be-analyzed tubular pile.

Description

technical field [0001] The invention relates to the field of engineering construction, in particular to a method and system for analyzing the vertical bearing capacity of pipe piles based on high-strain test data. Background technique [0002] As the most important pile type, prestressed pipe piles play a vital role in the safety of engineering structures. In order to ensure engineering safety, it is usually necessary to carry out load tests on prestressed pipe piles to determine whether their vertical bearing capacity meets the design requirements. Require. [0003] In the prior art, the analysis methods for the vertical bearing capacity of prestressed pipe piles mainly include theoretical method, standard method and in-situ test method. [0004] In the theoretical method, the parameters are provided by the geological survey report, and the accuracy of the parameters provided is not high, which may easily lead to calculation errors; in the normative method, the calculation...

AI Technical Summary

Problems solved by technology

Among them, if the impact force is small, it will not be able to fully stimulate the bearing capacity of the pile tip, which will lead to certain errors in the analysis results; and the static load test has disadvantages such as high cost and long time, which will affect the actual construction progress on site.

Images