Appraisal of Highway Tunnels Construction on the Active Railroad Tunnel Operational Reliability in the City of Sochi

Frolov, Yuri; Konkov, Alexander; Свинцов, Е С

doi:10.1016/j.proeng.2017.05.126

Cited by 4 publications

(1 citation statement)

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“…where f telem is the tensile strength of the lime-modified carbonate soil port city highway subgrade and f taverage is the average value of the stress at the outer side of the foundation pit and the bottom of the foundation pit. 16 Based on these parameters, a load analysis model for subgrade soil filling of lime-carbonated soils in urban highways can be constructed. Porosity was used as the measurement index, a falling body impact test was carried out, and the stress path characteristic and the strength of the load overload load of the limemodified carbonate-based filler load were analyzed.…”

Section: Parameter Analysis Of the Mathematical Model Of Subgrade Fmentioning

confidence: 99%

Feasibility of lime‐modified carbonate soil for highway subgrade filling

Zheng¹,

Qingqing³

2020

Asia-Pacific J Chem Eng

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For the lime modified carbonate rock soil road subgrade of port highway, after the lime modified carbonate rock filler is used to treat it, the particle discrete unit has the characteristics of sparsity, and the particle gradation is caused by the seepage of soil mass, and with the increase in load, overload load occurs. It is therefore necessary to establish relevant mathematical models to analyze the load variation of lime‐modified carbonate roadbed under boundary conditions. The probability mathematical model of the load overload of lime‐modified carbonate fill was studied, and a feasibility analysis model of lime‐modified carbonate soil used in port city highway subgrade filling was put forward based on the discrete hysteretic characteristic curve method. The load characteristics of lime‐modified carbonate soil were analyzed within the limited area distribution range of adjacent two holes. The load energy transfer model of lime‐modified carbonate packing in foundation soil was analyzed in PFC3D software. The foundation stress reinforcement method was used to improve the carbonate soil foundation construction and, combined with the seepage model of the radial consolidation of the foundation, a filling feasibility analysis of the urban highway subgrade of lime‐modified carbonate soil port was carried out. The simulation results show that this method can effectively realize the load overload analysis of lime‐modified carbonate packing, improve the load capacity of subgrade filler for port city highway, and improve the load property of highway subgrade of port city. Keep the soil particles in close contact. This study provides a feasible basis for future highway construction and the application of lime‐modified carbonate.

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Section: Parameter Analysis Of the Mathematical Model Of Subgrade Fmentioning

confidence: 99%