Design method for reinforced concrete structure durability with the use of safety coefficient by service life period

Choriev, Jamshid; Muratov, A.; Yangiev, Asror; Muratov, Oybek; Karshiev, Rustam

doi:10.1088/1757-899x/883/1/012024

Cited by 6 publications

(4 citation statements)

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“…Therefore, the reservoirs located in the basins of these rivers are often damaged by floods. It is caused by the accumulation of large amounts of sediments in the basins of water and flood reservoirs built in the river basins [8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Resultsmentioning

confidence: 99%

“…Parameters of turbid sediments in flood reservoirs, which have been in use for several years, differ sharply from the design calculations. According to the results of the research, the total volume of sedimentary deposits in these reservoirs can be determined as follows [4][5][6][7][8][9][10][11][12][13]:…”

Section: Resultsmentioning

confidence: 99%

“…According to the analysis of the mechanical composition of sedimentary deposits, the average percentage by particle diameters and their weight is as follows. : d >0.5 mm -0.1 %; d= 0.25-0.5 mm -0.79%; d = 0.1-0.25 mm -2.33%; d= 0.05-0.1 mm -53.22%; d= 0.01-0.05 mm -13.46%; d= 0.005-0.1 mm -8.92%; d<0.005 mm -21.18%; d av = 0.05 mm [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Resultsmentioning

confidence: 99%

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Results and analysis of field research in flood reservoirs in Kashkadarya region

et al. 2021

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The article presents field research conducted in Langar, Dehkanabad, Shurabsoy flood reservoirs in the Kashkadarya region. Many problems result from floods in the reservoirs; there are disturbances in the discharge and drainage facilities during the passage of accidental floods. At the same time, there was a large accumulation of turbid sediments in flood reservoirs. In the article, the calculations using empirical formulas for predicting the number of turbid sediments in Langar, Dehkanabad, Shurabsoy flood reservoirs up to 2025-2030 years are also presented, and it is noted that at present, their useless volumes are full of turbid sediments. Preliminary recommendations for assessing the safety of flood reservoirs have been developed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Results and analysis of field research in flood reservoirs in Kashkadarya region

et al. 2021

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“…Therefore, it is no coincidence, which the study of erosion processes caused by wave flows.In most cases, begins with the study of the structural features of the boundary layer, which in natural conditions is predominantly turbulent. Now, thanks to the fundamental research of a number of authors [3,8,9,18,19,20], in the theory of the boundary layer to achieve sufficiently great success. However, in view of the great mathematical difficulties in describing the process of formation of a boundary layer under conditions of an oscillatory (oscillating) nature of motion.At the present stage, there are still entertaining gaps, and first of all, in the field of reliable quantitative assessment of the parameters of non-stationary layers, which largely determines the correctness making design decisions in hydraulic engineering.…”

Section: Introductionmentioning

confidence: 99%

The beginning of the movement of bottom sediments in an unsteady flow

et al. 2021

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This article discusses the problems of determining the friction parameter and non-eroding conditions in a wave flow are considered from the standpoint of an approach using a critical dynamic speed. In the first stage of research, the question of the formation of an unsteady turbulent boundary layer is substantiated. Because of the research, dependences were obtained for the most important value from the point of view of sediment transport - the friction parameter. Based on the data of these measurements, a plot of dependence was built, which differs from the previously obtained analytical relationships. For the convenience of practical use of the obtained empirical connection approximated. The second stage of research is the development of a method for calculating the critical tangential stresses corresponding to the beginning of the movement of bottom sediments. Based on the Shilds method, a curve similar to the Shilds curve for wave flow conditions was constructed, which was approximated for the convenience of practical use.

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Results of analysis of physical and chemical composition of sludge sediments in Langar and Kalkama flood reservoirs of Kashkadarya region

Yangiev,

Panjiev,

Adjimuratov

et al. 2023

E3S Web of Conf.

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The article presents the results of field research to determine the physical and chemical composition of sediments in the Langar and Kalkama reservoirs in the Kashkadarya region. Data on the volume of floods in Langar, Kyzylsuv, Kalkama, and Dehkanabad flood reservoirs in 2015-2021 were presented, and it was noted that in Langar in 2019, there were 3 times more floods than in 2015. The granulometric content of turbid sediments in the middle part of the Langar flood reservoir is 29.93% from 0.005-0.002 mm, 21.36% from 0.01-0.005, 21.36 from 0.05-0.01 mm, 25.35% from 0.1-0.05, 0.25-0.1 mm to 0.6%, 0.5-0.25 mm to 0.8%, 1.0-0.5 to 0.6%, i.e., the amount of particles smaller than 0.05 mm reaches 98%. This figure is 94-95% in front of the flood reservoir's upper and water discharge part. It is justified that mud from the Langar flood reservoir can be used as a building material in brick factories due to its high viscosity, and mud from the Kalkama flood reservoir can be used in construction as fine sand due to its low viscosity.

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Design method for reinforced concrete structure durability with the use of safety coefficient by service life period

Cited by 6 publications

References 0 publications

Results and analysis of field research in flood reservoirs in Kashkadarya region

Results and analysis of field research in flood reservoirs in Kashkadarya region

The beginning of the movement of bottom sediments in an unsteady flow

Results of analysis of physical and chemical composition of sludge sediments in Langar and Kalkama flood reservoirs of Kashkadarya region

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