Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen

WANG Kun

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Journal of Railway Engineering Society ›› 2011, Vol. 28 ›› Issue (8) : 53-57.

Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen

WANG Kun

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Abstract

Research purposes: Combined with the deep foundation pit project of one railway station in Shenzhen，by doing indoor triaxial creep test，the time sensitivity of the foundation pit excavation and the negative influence on the surrounding building caused by the soil creep were fitted with numerical simulation method for purpose of researching the influence of soil creep characteristics on the stability of the exterior － protected construction for the foundation pit．

Research conclusions: Through numerical simulation of the typical section，the introduction was given mainly to the creep characteristics of the soil in Shenzhen area for providing the theoretical basis for the safe construction，protection of the surrounding environment and prediction of long － term creep． Before and after creep，the deformation of the supporting structure increased by 16% and the base settlement of the near building increased by about 21% ． At the same time，the more usable calculation parameters for SSC model were obtained and it had the big reference value for the similar works．

Key words

silty clay / fully weathering granite / triaxial creep / parameters fitting / numerical analysis

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WANG Kun. Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen[J]. Journal of Railway Engineering Society, 2011, 28(8): 53-57

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