Method for reinforcing soft ground by post-grouting combined with air-boosted vacuum preloading

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United States of America Patent

PATENT NO 11982065
APP PUB NO 20240133144A1
SERIAL NO

18492792

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Abstract

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A method for reinforcing soft ground by post-grouting combined with pressurized vacuum preloading is proposed, by pre-burying prefabricated vertical drains and air-boosted pipes in granular material piles, and the air-boosted pipes are used as grouting pipes to reduce the number of times of piling, which not only improves the construction efficiency, but also reduces the structural disturbance of the soil and the influence of smear effect, thus reducing the impact on the radial permeability and the radial consolidation coefficients. The method does not use geotextile bags for granular materials, which can avoid the problem of forming a localized clogging area around the geotextile bags, and the method not only improves the efficiency of vacuum transfer in a pre-consolidation stage, but also improves the grouting effect in the later stage, effectively enhances the strength of soft soil and makes granular material piles and the surrounding soil form composite ground.

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Patent Owner(s)

  • NANJING HYDRAULIC RESEARCH INSTITUTE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
He, Bin Nanjing, CN 212 1964
He, Ning Nanjing, CN 128 2300
Jiang, Yanbin Nanjing, CN 10 71
Kong, Yang Nanjing, CN 4 7
Li, Denghua Nanjing, CN 4 0
Qian, Yajun Nanjing, CN 1 0
Wang, Zhangchun Nanjing, CN 1 0
Xie, Yuting Nanjing, CN 1 0
Xu, Binhua Nanjing, CN 2 5
Yan, Zhikun Nanjing, CN 1 0
Yin, Xiang Nanjing, CN 31 10
Zhan, Xinjie Nanjing, CN 1 0
Zhang, Guirong Nanjing, CN 2 0
Zhang, Zhongliu Nanjing, CN 1 0
Zhou, Yanzhang Nanjing, CN 1 0

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