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Soil reinforcement experiment inside large-scale bucket foundation in muddy soil

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Abstract

The large-scale bucket foundation with 30 m in diameter and 6 m in height was used as the foundation of wind turbine. The wide-shallow foundation is different from the traditional bucket foundation with high ratio of height to diameter. The cover-load-bearing mode of the new type foundation can resist more external loadings. To achieve the bearing mode, the muddy soil inside the bucket should be reinforced, which will improve the soil strength and make the soil and foundation into a whole part to resist the external loadings. The vacuum and electro-osmotic soil reinforcing methods were used in the experiments. The results showed that the bearing behavior of the muddy soil were effectively improved by the negative pressure and electro-osmotic effect, and the improved muddy soil with better strength could work together with the bucket foundation, meaning that the top-cover bearing mode of the new bucket foundation was achieved. During the soil reinforcing process, the foundation moved downward, i.e., the settlement of foundation was almost finished during the pre-loading process caused by the vacuum and electro-osmotic method.

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Authors and Affiliations

  1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin, 300072, China

    Hongyan Ding  (丁红岩) & Jijian Lian  (练继建)

  2. School of Civil Engineering, Tianjin University, Tianjin, 300072, China

    Hongyan Ding  (丁红岩), Zengzhi Li  (李增智), Jijian Lian  (练继建), Puyang Zhang  (张浦阳) & Xu Huang  (黄 旭)

  3. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin, 300072, China

    Hongyan Ding  (丁红岩) & Puyang Zhang  (张浦阳)

Authors
  1. Hongyan Ding  (丁红岩)
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  2. Zengzhi Li  (李增智)
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  3. Jijian Lian  (练继建)
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  4. Puyang Zhang  (张浦阳)
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  5. Xu Huang  (黄 旭)
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Corresponding author

Correspondence to Puyang Zhang  (张浦阳).

Additional information

Supported by National Hi-tech Research and Development Program of China(“863” Program, No. 2012AA051705) and National Natural Science Foundation of China(No. 51109160).

DING Hongyan, born in 1963, male, Dr, Prof.

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Ding, H., Li, Z., Lian, J. et al. Soil reinforcement experiment inside large-scale bucket foundation in muddy soil. Trans. Tianjin Univ. 18, 168–172 (2012). https://doi.org/10.1007/s12209-012-1657-1

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  • DOI: https://doi.org/10.1007/s12209-012-1657-1

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