Effect of subgrade soil stiffness on the design of geosynthetic tube

Guo, Wei; Chu, Jian; Yan, Shuwang

doi:10.1016/j.geotexmem.2011.01.014

Cited by 27 publications

(16 citation statements)

References 20 publications

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“…For similar structures, such as closed pressurized geomembrane tubes c.f. [3] for the elastic case, [4] for stacked arrangement, [5] for infill with liquids of different density, [6] for compressible subgrade soil; or [7] for liquid filled nonlinearly elastic shells. Figure 17.…”

Section: Shape Of the Loaded Textile Sectionmentioning

confidence: 99%

Portable tent structure designs for flood protection

Nagy¹,

Gáspár²

2015

JCAM

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In this paper, we present two simple arrangements of portable tent structures for flood protection. In the first, an inflated cylinder lifts the top of the textile as the water level rises, while in the second the textile supporting the water pressure of the tide is hung on a steel framework and is filled with water previously. We give a numerical solution for the nonlinear system of equations of the compatibility and equilibrium conditions, and also present a complete analytic solution to the boundary value problem of the shape of an inextensible, weightless, prismatic textile, similar to the sessile drop problem. After discussing the mechanical behavior of the structures, different geometries capable of withstanding a certain water height are determined by a software developed for this specific purpose enabling the design for optimum. Furthermore, the basic rules of thumb are also formulated, aiding the preliminary conceptual design.Mathematical Subject Classification: 65H05, 65B99

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Section: Shape Of the Loaded Textile Sectionmentioning

confidence: 99%

Portable tent structure designs for flood protection

Nagy¹,

Gáspár²

2015

JCAM

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“…A lot of analytical solutions have been proposed to studied the cross-sectional shape and the tensile force of the geomembrane tubes resting on rigid foundation (Leshchinsky, Leshchinsky, Ling, and Gilbert,1996;Plaut and Suherman,1998;Cantré and Saathoff,2011). The effects of the foundation strength and solid-liquid fillings on the cross-sectional shape and tensile force of the geomembrane tube have been examined (Guo, Chu, and Nie,2014;Guo, Chu, Yan, and Nie,2013;Guo, Chu, and Yan, 2011;Plaut, and Klusman, 1999). When the geomembrane tube be filled with silt, the consolidation stress and deformation characteristics of the silt have also been analyzed by Cantré (2002).…”

Section: Introductionmentioning

confidence: 99%

Overturning stability of supported geomembrane tube for flood control

et al. 2021

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As a kind of rapid filling hydraulic structure, geomembrane tube can effectively act as flood barriers and cofferdams for flood risk management. L-shaped block is used to support geomembrane tube to prevent it from rolling. The contact force between the L-shaped block and the geomembrane tube is analyzed by using particle flow code (PFC2D) software, and the overturning stability of the L-shaped block is calculated. The relationship between the key factors and the overturning stability was established. It is found that the central angle of the L-shaped block has little influence on the overturning stability. The overturning stability decreases with the increase of the initial pumping pressure. Keeping Lw/Lb unchanged, increasing Lb will improve the overturning stability where Lw and Lb are the width and the height of the Lshaped block. Under the ultimate water level, when 1.23 Lbcr < Lw≤1.55 Lbcr, the L-shaped block is in the state of overturning stability where Lbcr is the critical height of the L-shaped block. The initial pumping pressure is less than 0.152γL, the L-shaped block is in the state of overturning stability with Lw/Lbcr =1.0 where L is the cross-sectional perimeter of the geomembrane tube and γ is the unit weight of the filling liquid, on the contrary, Lw/Lbcr must be greater than 1 to ensure its overturning stability.

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“…Analytical solutions have been proposed to analyse the geomembrane tubes resting on rigid foundations (Cantré & Saathoff, ; Guo, Chu, & Nie, ; Guo, Chu, Yan, & Nie, ; Leshchinsky, Leshchinsky, Ling, & Gilbert, ; Liu & Silvester, ) and on deformable foundations (Guo, Chu, & Yan, ; Guo, Kou, Zhou, Nie, & Chu, ; Plaut & Suherman, ). The cross sections of geomembrane tubes supported by wedges on the downstream side and acted by external hydraulic pressure have also been analysed by Plaut and Klusman ().…”

Section: Introductionmentioning

confidence: 99%

Stability of supported geomembrane tube flood barriers of novel design

Sun

Gao

et al. 2019

J Flood Risk Management

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Geomembrane tube is an alternative method for the construction of flood barriers, cofferdams and breakwaters for flood risk management. Compared to the traditional method of using sandbags to build flood barriers, geomembrane tubes could be inflated very quickly using water, folded and transported easily after the flood recedes and reused in the future. A method of inserting the L-shaped block on the downstream side of a geomembrane tube is proposed to prevent the geomembrane tubes from rolling off or slipping along the ground surface. Numerical studies using particle flow code (PFC 2D ) software are carried out to analyse the behaviour of the geomembrane tube supported by L-shaped blocks. Parametric studies are also conducted to identify the influences from the key factors and to provide predictive charts for practical usage. It is found that the optimum edge length of the L-shaped block is 0.12L and the suggested initial pumping pressure is 0.162γL where L is the cross-sectional perimeter of the geomembrane tube and γ is the unit weight of the filling liquid. The suggested central angle of the segment of the L-shaped block is π/3. The geomembrane tube designed using the suggested parameters can sustain and external water level of 0.296L. K E Y W O R D Sflood, flood barrier, geomembrane tube, geosynthetic, PFC 2D

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Effect of subgrade soil stiffness on the design of geosynthetic tube

Cited by 27 publications

References 20 publications

Portable tent structure designs for flood protection

Portable tent structure designs for flood protection

Overturning stability of supported geomembrane tube for flood control

Stability of supported geomembrane tube flood barriers of novel design

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