Determination method of sensibility of influence factors of anchoring force of soil anchors

Abstract

The invention discloses a determination method of sensibility of influence factors of anchoring force of soil anchors. The method comprises the steps that firstly, a soil-anchor anchoring-force prediction model is selected, and input quantities and output quantities of the prediction model are determined, wherein the influence factors of the anchoring force of the M soil anchors and the anchoring force of the soil anchors are used as the M input quantities and the M output quantities of the soil-anchor anchoring-force prediction model respectively; secondly, a training sample set is obtained, wherein in-situ test data of the N soil anchors are collected, and the in-situ test data of each soil anchor are used as one training sample; thirdly, the soil-anchor anchoring-force prediction model is built and trained; fourthly, a multilevel and multi-factor orthogonal test is carried out in the steps of inputting design parameters of the soil anchors, building an orthogonal table, obtaining samples of the orthogonal test, predicting the anchoring force, organizing predicted values of the anchoring force and determining the sensibility. The method has the simple steps, is reasonable in deign, convenient to implement and good in using effect, and can be used for easily, conveniently, rapidly and accurately completing a determining process of the sensibility of the influence factors of the anchoring force of the soil anchors.

Description

technical field [0001] The invention belongs to the technical field of analyzing factors affecting the anchoring force of a soil layer anchor, and in particular relates to a method for measuring the sensitivity of the influencing factors of the anchoring force of a soil layer anchor. Background technique [0002] The anchoring force of the soil anchor depends on many factors such as the length of the anchor section, the diameter of the anchor, the diameter of the hole, the strength of the grouting body, the inclination of the anchor, and the properties of the soil. These influencing factors inevitably have uncertainties. In the actual use process, how much the possible swing of the above uncertain factors will affect the anchoring force of the soil layer, and what factors the anchoring force is most sensitive to is often one of the important issues concerned by engineering. [0003] In 1986, Hohenbichler conducted a study on the sensitivity of reliability to random variables...

AI Technical Summary

Problems solved by technology

At present, there are few researches on the parameter sensitivity of anchoring engineering in China, and the available literature in the report is mainly limited to the sensitivity analysis of various parameters to the stability and deformation of anchoring engineering. Fewer, almost no relatively complete research data in this area

The existing sensitivity research methods are limited to the finite element method. The obvious disadvantage of this method is that when there are many parameters, the amount of calculation is very large. On the other hand, it is difficult to determine the combination of multiple parameters.

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