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2018 | OriginalPaper | Buchkapitel

Characterization of Soil Displacements During Press-in Pile Model Tests

verfasst von : Y. Lu, Q. Wang, X. J. Li, H. Q. Sun, X. Y. Wang

Erschienen in: Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours

Verlag: Springer Singapore

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Abstract

When a pile is pushed into the ground, it will incur displacement field in the ambient soils which will pose danger to existing structures, e.g. pipelines, foundations, and tunnels. To characterize the soil displacements caused by press-in piles, model tests combined with digital image correlation (DIC) techniques were performed. A digital camera was installed outside the model box to measure the full-field displacements. In addition to soil displacements, eight earth pressure sensors were installed to investigate soil stress in the horizontal direction during the whole process of pile installation. Based on model test results, it was found that both soil stresses and displacements in the horizontal initiated and peaked before pile tip approached. When pile tip passed the designated depths, the soil stresses went back to initial at-rest state and soil horizontal displacements stabilized. In general, soil displacements and stresses were conjugated behaviors during pile penetration. However, the conjugated relation at 3D (D is the width of model pile) distance from pile surface was less pronounced than 1D.

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Literatur
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Zurück zum Zitat Teng, Y., Stanier, S.A., Gournvenec, S.M.: Synchronised multi-scale image analysis of soil deformations. Int. J. Phys. Modell. Geotech. 17(1), 53–71 (2017)CrossRef Teng, Y., Stanier, S.A., Gournvenec, S.M.: Synchronised multi-scale image analysis of soil deformations. Int. J. Phys. Modell. Geotech. 17(1), 53–71 (2017)CrossRef
Zurück zum Zitat Yuan, B.X., Wu, Y.D., Chen, R., Feng, Z.W., Wang, Y.X.: Model tests on displacement field of internal soil induced by laterally loading pile. J. Zhejiang Univ. (Eng. Sci.) 50(10), 2031–2036 (2016). (in Chinese) Yuan, B.X., Wu, Y.D., Chen, R., Feng, Z.W., Wang, Y.X.: Model tests on displacement field of internal soil induced by laterally loading pile. J. Zhejiang Univ. (Eng. Sci.) 50(10), 2031–2036 (2016). (in Chinese)
Metadaten
Titel
Characterization of Soil Displacements During Press-in Pile Model Tests
verfasst von
Y. Lu
Q. Wang
X. J. Li
H. Q. Sun
X. Y. Wang
Copyright-Jahr
2018
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-13-0125-4_61