IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS

DU Siyi; LI Chenhui

doi:10.13204/j.gyjzG20022605

Volume 51 Issue 5

Sep. 2021

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DU Siyi, LI Chenhui. IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 145-150. doi: 10.13204/j.gyjzG20022605

Citation:

DU Siyi, LI Chenhui. IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 145-150. doi: 10.13204/j.gyjzG20022605

DU Siyi, LI Chenhui. IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 145-150. doi: 10.13204/j.gyjzG20022605

Citation:

DU Siyi, LI Chenhui. IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 145-150. doi: 10.13204/j.gyjzG20022605

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IMPROVEMENT OF THE SIMPLE CONVERSION METHOD FOR LOAD-SETTLEMENT CURVES IN SELF-BALANCE TESTS

doi: 10.13204/j.gyjzG20022605

DU Siyi,
LI Chenhui

Zhengzhou University, Zhengzhou 450000, China

Received Date: 2020-03-01
Available Online: 2021-09-16
Publish Date: 2021-09-16

Abstract

Abstract

The simple conversion method is a common method for transform Q-s curves of self-balanced static load tests into curves of traditional static load tests. The calculation accuracy of compression for piles of being pushed-up determined the accuracy of the simple conversion method and the results of self-balanced static load tests.Aimed at the deficiency of the current simple conversion method, the compression calculations of the pushed-up piles were studied. Based on analysis of the force mechanisms for pushed-up piles and the finite element calculations, the distribution coefficient C of the side friction resistance for piles were obtained, which could influence the calculation accuracy of compression for pushed-up piles. Under the action of the thrust, the negative friction on the sides of piles decreased sharply upward along pile shafts, and the distribution of the negative friction was a concave hyperbola. With the increase of aspect ratios, the values of C increased.Therein, the calculation formula of pile compression was more accurate. Engineering examples showed that the improved simple transformation method was more accurate and practical.
- self-balancing test,
- ABAQUS simulation,
- negative friction resistance,
- aspect ratio,
- distribution coefficient

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References(15)

References

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