Numerical Simulation of Stress and Deformation on Combined Retaining System of Soil Nails and Pile-anchors

Home > Archive>Volume 41, Issue 8, 2014 >53-57

Numerical Simulation of Stress and Deformation on Combined Retaining System of Soil Nails and Pile-anchors
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                        LIU Li-pingLIU Li-ping
Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
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LIU Jing-jingLIU Jing-jing
Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
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ZHANG PengZHANG Peng
Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
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SHI Ming-luSHI Ming-lu
Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
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YAN Xian-fengYAN Xian-feng
Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
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Affiliation:Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.,Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.,Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.,Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.,Hebei Research Institute of Construction and Geotechnical Investigation Co., Ltd.
Clc Number:TU473
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Abstract:

To the combined support system of soil nailing and pile-anchor for deep excavation, by the numerical calculation with FLAC3D software, the analysis is made on the influence of excavating process to displacement, stress and stability safety factor of support system structures, as well as the laws of ground deformation caused by excavation. 2 retaining schemes are considered; one is the retaining structure composted by 2 layer soil nails and 1 pile-anchor, the other one is the retaining structure composted by 4 layer soil nails and 3 pile-anchors. Based on the calculation results, comparative study is carried out on the support effects of different schemes to analyze the feasibility of the support scheme. The paper presents the comparison of support effects between the adopted scheme in the engineering and field measured results.

Key words:foundation pit support; soil nail; pile-anchor; support system; numerical simulation

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Received:December 08,2013
Revised:May 29,2014
Adopted:June 08,2014
Online: August 26,2014
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