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Long-term composite stiffness prediction method for coastal cement-soil piles
The invention discloses a long-term composite stiffness prediction method for coastal cement-soil piles. The invention adopts the following technical scheme: a plurality of cement-soil test specimens which simulate coastal cement-soil piles are fabricated, the cement-soil test specimens are divided into two groups and are respectively subject to curing in a curing room and seawater immersion curing, and the uniaxial compressive strengths quc and quw of the cement-soil test specimens at different ages under the curing condition in the curing room and the seawater immersion curing condition are respectively obtained; formula fitting is carried out on deterioration depth L and compressive strength quc, so that the time-dependent change relation of the deterioration depth of the cement-soil piles in the coastal corrosion environment is obtained, a time-dependent growth model of the deformation modulus of the undeteriorated cement and soil in the cement-soil piles is determined, the long-term composite stiffness Ec of the coastal cement-soil piles is obtained, and thereby the change of the long-term composite stiffness of the cement-soil piles is obtained. By a short-term compressive strength experiment result obtained in a lab, the long-term composite stiffness prediction method for the coastal cement-soil piles can predict the bearing capability of salty cement-soil piles in the whole life cycle, and solves the problem that field measurement cannot be carried out in certain regions.
Long-term composite stiffness prediction method for coastal cement-soil piles
The invention discloses a long-term composite stiffness prediction method for coastal cement-soil piles. The invention adopts the following technical scheme: a plurality of cement-soil test specimens which simulate coastal cement-soil piles are fabricated, the cement-soil test specimens are divided into two groups and are respectively subject to curing in a curing room and seawater immersion curing, and the uniaxial compressive strengths quc and quw of the cement-soil test specimens at different ages under the curing condition in the curing room and the seawater immersion curing condition are respectively obtained; formula fitting is carried out on deterioration depth L and compressive strength quc, so that the time-dependent change relation of the deterioration depth of the cement-soil piles in the coastal corrosion environment is obtained, a time-dependent growth model of the deformation modulus of the undeteriorated cement and soil in the cement-soil piles is determined, the long-term composite stiffness Ec of the coastal cement-soil piles is obtained, and thereby the change of the long-term composite stiffness of the cement-soil piles is obtained. By a short-term compressive strength experiment result obtained in a lab, the long-term composite stiffness prediction method for the coastal cement-soil piles can predict the bearing capability of salty cement-soil piles in the whole life cycle, and solves the problem that field measurement cannot be carried out in certain regions.
Long-term composite stiffness prediction method for coastal cement-soil piles
CUI XINZHUANG (author) / HOU FEI (author) / JIN QING (author) / HUANG DAN (author) / ZHANG JIONG (author) / ZHENG YINGJIE (author) / LOU JUNJIE (author) / TANG WEIZE (author) / WANG LEI (author)
2015-07-29
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
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Gründungen
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