Reliability of RC frame-braced systems in dangerous geological conditions

Gennadyevich, Yemelyanov Sergey; Pakhomova, Ekaterina; Olegovna, Dubrakova Ksenia

doi:10.5937/jaes17-21685

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…A separate issue when considering the development of hard-to-extract oil deposits is the issue of sulfur content. Oil extraction with high sulfur content requires the use of specialized equipment; such oil requires high additional costs during processing, and special transportation conditions, which affects the economy of projects and limits its extraction (Gennadyevich et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Raw Material Base of Hard-to-Extract Oil Reserves of Russia

Prischepa¹,

Nefedov²,

Кочнева³

2020

PTQ

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The estimation of the share of hard-to-extract oil reserves in the deposits of Russia varies by different sources, in a fairly wide range (from 30 to 70 %). Due to the absence of a common approach to their definition, the variety of parameters used to estimate this share and fundamentally different conditions for the development of the groups of reserves classified as hard-to-extract become challanging. A significant share of the proven oil reserves of Russian oil fields - about 34 % (6.3 million tons) - belongs to heavy (oil density more than 0.871 g/cm3) and super-heavy (oil density more than 0.895 g/cm3). In general, the share of high-viscosity and super-highviscosity oils is about 13% (2.4 million tons). The largest share refers to the deposits of three districts. In lowpermeable collectors (permeability less than 0.05 μm2), huge reserves are concentrated – 8.2 million tons or 44.6 % of all oil. Comparison of oil extraction and reserves structure indicates a good correlation for oil extraction from low-permeable collectors in 41.8 % with reserves percentage in 44.6 % as well as a relatively good correlation in super-heavy oil in 13.4% with reserves percentage in 18 % and low rates for super-high-viscosity oil in 1.7% with reserves perecentage in 6 %. Significant proven reserves of high-viscosity oil in Russia indicate the possibility of increasing production with the introduction of modern, existing and proven, technologies under appropriate economic conditions. Full-scale involvement in the development of only the largest deposits of high-viscosity oil would allow the Russian Federation to produce at least 25-30 million tons in the medium term.

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Section: Resultsmentioning

confidence: 99%

Raw Material Base of Hard-to-Extract Oil Reserves of Russia

Prischepa¹,

Nefedov²,

Кочнева³

2020

PTQ

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“…Therefore, with a coefficient of variation of 13%, to ensure reliability 0.977 is required a uniformity coefficient of 1.35. To analyze the dependencies (1)(2)(3)(4)(5)(6)(7)(8)(9) in Figure 1 and Table 1, the dependence of the uniformity coefficient for ensuring reliability V on the value of the variation coefficient is shown.…”

Section: Theory and Experimental Methodsmentioning

confidence: 99%

“…The most effective verification methods are based on advanced probabilistic approaches, including risk assessment methods taking into account the actual properties of the structure and the associated consequences of destruction. The subject study shows that advanced reliability approaches typically save 10-20% in structural materials and natural resource consumption [2][3][4]. In particular, data are presented on the relationship between cost (as the main factor influencing decision-making) and the reliability of the building structures investigated solutions, taking into account the impact on the environment [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The influence of the coefficient of variation on the process reliability of brick production

Gennadievna¹,

Olegovna²,

Yuryevich³

2021

J Appl Eng Science

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The goal of research was studying the influence of the variation coefficient values during statistical tests of building structures on the destruction probability and reliability of brick building structures. The article focuses on comparing the theoretical values of the probability theory problems with their practical application in building structures behavior calculation. The scientific novelty lies in the comparison of the calculated data according to the normal distribution with the practical values of the experiment carried out on brick structures. As a result, a dependence graph dependence of the reliability coefficient k on the brick grade was, taking into account various coefficients of variation.

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“…When we calculate nonlinear and nonstationary deforming statically indefi nite timber structures, the integral assessment method can be applied. This method allows linearizing of the problem and fi xing of nonstationary deformation features [1][2][3][4][5][6][7][8][9][10][11][12]. Different points of an element cross section, subjected nonhomogeneous stress-strain state, has different values of stresses.…”

Section: Determining Equationsmentioning

confidence: 99%

Stability of statically indefinite physically nonlinear timber structural systems

Yemelyanov-Gennadyevich¹,

Gennadievna-Pakhomova²,

Olegovna-Dubrakova³

et al. 2019

J Appl Eng Science

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The procedure for determining the critical stability parameters of wood constructive systems is given, taking into account the features of the deformation stage in which the compressed elements are located. The dependence of critical parameters on the loading scheme and frame dimensions is determined. The order and results of experimental studies of a single-span structural system of wood are given. It was revealed that taking into account the features of the deformation stage, in which the compressed frame racks are located, will lead to an increase in the critical force value. It is concluded that the proposed criterion for assessing the stability of compressed wood core elements makes it relatively easy to assess the resource resistance of such elements, taking into account the effect of the level of operating stresses on the stiffness value.

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Reliability of RC frame-braced systems in dangerous geological conditions

Cited by 8 publications

References 3 publications

Raw Material Base of Hard-to-Extract Oil Reserves of Russia

Raw Material Base of Hard-to-Extract Oil Reserves of Russia

The influence of the coefficient of variation on the process reliability of brick production

Stability of statically indefinite physically nonlinear timber structural systems

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