A Combined-Power Model for the Distribution of Axial Force in Shaft Anchor along Its Length

A Combined-Power Model for the Distribution of Axial Force in Shaft Anchor along Its Length

The theoretical results of axial force distribution models differ greatly from tests because of the complication of the rock type material. A three-parameter combined-power model is proposed by curves fitting the test data recorded from the pull tests on anchoring bars used in different engineering...

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Veröffentlicht in:Journal of earth science (Wuhan, China) China), 2006, Vol.17 (1), p.89-94
1. Verfasser: 卫军 周锡武 朱玉 罗昕
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地质工程
竖井
轴力
锚
预应力
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description The theoretical results of axial force distribution models differ greatly from tests because of the complication of the rock type material. A three-parameter combined-power model is proposed by curves fitting the test data recorded from the pull tests on anchoring bars used in different engineering projects. Based on the comparison of the mechanical characteristics of shaft anchors and prestressed tendons, a two-parameter combined-power function model for prestressed tendons is proposed. The bounded length derived from the model and the suggested values of the parameters are also proposed. Compared with the Gaussian model, the three-parameter combined-power model is more precise and simple in expression. Results also suggest that the bounded length calculated from the average stress method is not safe enough.
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subjects 地质工程
竖井
轴力
锚
预应力
title A Combined-Power Model for the Distribution of Axial Force in Shaft Anchor along Its Length
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