Evaluation of soil arching effect due to partially mobilized shear stress in piled and geosynthetic-reinforced embankment

Lv, Weihua; Wu, Tao; Gu, Fan; Gao, Lei

doi:10.1007/s11771-020-4433-8

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…The former references relate to the part of the embankment load directly transferred to the piles, and the remaining embankment load is carried by the subsoil and geosynthetic reinforcement, while the latter is defined as the load deformation coordination of the deflected reinforcement under the effect of vertical loads. Regarding to the soil arching effect, significant research has been conducted in the literature [20][21][22][23][24][25][26][27][28][29][30]. As for the membrane effect, some guidelines have Sustainability 2023, 15, 619 2 of 19 been proposed to directly determine the maximum tensile force and strain of the reinforcement, which may significantly influence the serviceability behavior of the reinforced piled embankment [12,14,15,[31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

2022

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Subsoil support is generally ignored in the design of reinforced piled embankments, resulting in a very conservative design for settlement control. This design philosophy may lead to an unnecessary increase in construction costs, especially for embankments constructed over subsoil of medium and high compressibility (i.e., compression index of subsoil larger than 0.2). This paper presents the ground reaction of lightly overconsolidated subsoil in a reinforced piled embankment subjected to cyclic loads for the purpose of investigating the general behavior of lightly overconsolidated subsoil, and it promotes the sustainable development of piled embankment technology. The ground reaction of subsoil under both static and cyclic loads was comprehensively analyzed in terms of settlement and incremental vertical stress, which exhibited approximately the same profile. However, the settlement of lightly overconsolidated subsoil under a cyclic load was 23% larger than that under a static load. A parametric study was then performed under cyclic loads, and the results showed that the vertical stress carried by the subsoil was the most sensitive to the pile spacing amongst all the parameters considered in this paper. The analysis demonstrated an approximately 88% increase in stress when spacing was enlarged from 2.0 to 3.0 m. Finally, a modified analytical method for the ground reaction of lightly overconsolidated subsoil under cyclic loads was presented, and it showed reasonable agreement with the numerical simulation, particularly for relatively low geogrid stiffnesses, low embankment height (<6.5 m), and small pile spacing (e.g., 2–3 m center to center).

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Section: Introductionmentioning

confidence: 99%

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

2022

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“…If the content of binder is very low, the strength of mixture will be very low; otherwise, the mixture will easily shrink and crack. e content of aggregate (CS or gravel) is generally 75%-80% for dense skeleton-type mixture, and appropriate amount of fine aggregate (<2.36 mm) is beneficial to improve the roadway engineering properties (i.e., decreasing shrinkage cracks and increasing compressive strength) of mixture [13,15,16].…”

Section: Introductionmentioning

confidence: 99%

Modification of Lime‐Fly Ash‐Crushed Stone with Phosphogypsum for Road Base

Zhang

Cheng

Lei

et al. 2020

Advances in Civil Engineering

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In order to increase the recycling of phosphogypsum waste, this study explored the feasibility of using phosphogypsum to replace some of the lime and aggregate in the lime-fly ash-crushed stone mixture which is a widely used road base material in China. For this purpose, compaction, compressive strength, composition structures, wetting-drying cycle tests, and shrinkage tests were carried out on the lime-fly ash-phosphogypsum-crushed stone composite to investigate its performance. The results indicate that lime-fly ash-crushed stone modified with phosphogypsum has the required strength of the road base material and favourable performances in environment (wetting-drying cycle) stability. The image processing analysis and shrinkage tests demonstrated that phosphogypsum can significantly improve the compactness and shrinkage performance of lime-fly ash-crushed stone mixture. A suitable content of phosphogypsum and a reasonable content of fine aggregate are conducive to improving the roadway engineering properties (i.e., decreasing shrinkage cracks and increasing compressive strength) of lime-fly ash-phosphogypsum-crushed stone composites.

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Rainfall Induced Geotextile Reinforced Model Slope Embankment Subjected to Surcharge Loading: A Review Study

Kumar

Roy

2022

Arch Computat Methods Eng

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Evaluation of soil arching effect due to partially mobilized shear stress in piled and geosynthetic-reinforced embankment

Cited by 6 publications

References 40 publications

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

Modification of Lime‐Fly Ash‐Crushed Stone with Phosphogypsum for Road Base

Rainfall Induced Geotextile Reinforced Model Slope Embankment Subjected to Surcharge Loading: A Review Study

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