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Basal Reinforcement

The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform

Shitong Song – 1st expert on this subject based on the ideXlab platform

  • centrifuge model tests of Basal Reinforcement effects on geosynthetic reinforced pile supported embankment
    GeoShanghai International Conference, 2018
    Co-Authors: Chao Xu, Di Wu, Shitong Song

    Abstract:

    As an effective and economical structure, geosynthetic-reinforced pile-supported (GRPS) embankment has been used in the construction of roadbed of railway and highway in soft soil area. Its key load transfer mechanism includes the soil arching effect of the embankment fill and the tensioned membrane effect of Reinforcement in the mattress. Via these two effects, more embankment load is carried by piles, and the total settlement and differential settlement of the roadbed can be under control. Four centrifuge model tests were conducted to study the Reinforcement effect of geosynthetic on embankment stability and pile efficacy. The following results are achieved: the surface settlement and differential settlement of embankment could be effectively reduced through appropriate setting of reinforced mattress; Basal Reinforcement increased the pile efficacy and was affected by the number of Reinforcement layers; The tensile force of geogrid below the embankment shoulder was larger than that near the road center because of the lateral restraint of Basal Reinforcement.

Yeshuang Xu – 2nd expert on this subject based on the ideXlab platform

  • evaluation of effect of Basal geotextile Reinforcement under embankment loading on soft marine deposits
    Geotextiles and Geomembranes, 2015
    Co-Authors: Ning Zhang, Shuilong Shen, Huaina Wu, Junchun Chai, Yeshuang Xu

    Abstract:

    Abstract This paper presents a case history on the performance of a coastal embankment reinforced by a layer of geotextile at the bottom of the embankment on soft marine deposits. The coastal embankment is the sea wall of the Qinshan nuclear power station on the northern side of Hangzhou bay near Shanghai, China. Monitoring of settlement and excess pore water pressure were carried out during and after embankment construction. The finite element method (FEM) was used to analyse the performance of the geotextile Reinforcement and its effect on soil behaviour under the embankment loading, based on the field monitored results. Stability analyses were conducted using two approaches: c-ϕ reduction in FEM, and limit equilibrium analysis. Both field and simulation results indicate that the geotextile has an effect on reducing the vertical displacements of subsoil. However, the results show Basal Reinforcement cannot increase the overall factor of safety, but the factor of safety at the local position, under Reinforcement, can be increased during the construction procedure, and this is due to the confinement of the soil element by the reinforcing fabric. Thus, in these circumstances, one layer of Basal geotextile Reinforcement can prevent sudden failure of subsoil during embankment construction.

Chao Xu – 3rd expert on this subject based on the ideXlab platform

  • centrifuge model tests of Basal Reinforcement effects on geosynthetic reinforced pile supported embankment
    GeoShanghai International Conference, 2018
    Co-Authors: Chao Xu, Di Wu, Shitong Song

    Abstract:

    As an effective and economical structure, geosynthetic-reinforced pile-supported (GRPS) embankment has been used in the construction of roadbed of railway and highway in soft soil area. Its key load transfer mechanism includes the soil arching effect of the embankment fill and the tensioned membrane effect of Reinforcement in the mattress. Via these two effects, more embankment load is carried by piles, and the total settlement and differential settlement of the roadbed can be under control. Four centrifuge model tests were conducted to study the Reinforcement effect of geosynthetic on embankment stability and pile efficacy. The following results are achieved: the surface settlement and differential settlement of embankment could be effectively reduced through appropriate setting of reinforced mattress; Basal Reinforcement increased the pile efficacy and was affected by the number of Reinforcement layers; The tensile force of geogrid below the embankment shoulder was larger than that near the road center because of the lateral restraint of Basal Reinforcement.