Seismic Behavior of Underground Polymer Piping with Variable Interaction Coefficients

Rashidov, T. R.; Nishonov, Nematilla

doi:10.1007/s11204-016-9385-5

Cited by 17 publications

(4 citation statements)

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“…This article aims to study the transverse vibrations of a single-span girder bridge, the pile part of which interacts with the surrounding soil under seismic action Academician T. Rashidov has developed a dynamic theory of seismic resistance of complex systems of underground structures based on considering the difference in strains of a structure and soil [16][17]. Several scientists in our country and abroad have researched the problems of seismic resistance of underground and surface structures interacting with surrounding soil [18][19][20][21][22][23]. To assess the reliability and bearing capacity of road girder bridges on supports, in addition to the moving loads acting on the girder, we should take into account the forces transmitted through the girder supports related to the impact of, for example, seismic waves.…”

Section: Methodsmentioning

confidence: 99%

Vibrations of a Girder on Rigid Supports of Finite Mass Interacting With Soil under Seismic Loads

2021

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Transverse vibrations of a single-span girder bridge are considered in the article; the pile part of the bridge interacts with the surrounding soil under seismic action. We assume that the strain of the structure does not go beyond the elastic limit, and the vibrations are linear. The bridge supports are assumed to be immersed in soil and interact with a rigid body under the impact of unsteady dynamic influences. We consider the case when the right and left supports have equal masses and interact with the surrounding soil. Here the symmetry condition is applied, so it is sufficient to consider the equation for the right half of the girder. The problems are solved by the analytical Fourier method under given boundary conditions. The results obtained are analyzed and presented in the form of the distribution of displacements and stresses over the time and length of the bridge structures.

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Section: Methodsmentioning

confidence: 99%

Vibrations of a Girder on Rigid Supports of Finite Mass Interacting With Soil under Seismic Loads

2021

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“…where μ soil is the Poisson's ratio of soil, k x is the coefficient of longitudinal interaction with soil, l is the length that corresponds to experimental study [12], u 0x and u 0y are the laws of ground motion.…”

Section: Methodsmentioning

confidence: 99%

“…It was assumed that any structure is elongated, branching one both along the strike and in-depth, with complex rigid and flexible pipe joints in a complex node. In [4][5][6][7][8][9][10][11][12][13], the seismodynamics of the underground structures under the harmonic and real seismic impacts are numerically studied. *Corresponding author: nematilla81@mail.ru…”

Section: Introductionmentioning

confidence: 99%

Underground polymeric l-shaped pipeline vibrations under seismic effect

et al. 2021

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The simultaneous equations of longitudinal and transverse vibrations of an underground polymeric L-shaped pipeline under the arbitrary direction of seismic load were derived in the paper. A computational scheme of the problem was constructed using central finite-difference relations. The analysis of the results obtained on the simultaneous longitudinal and transverse vibrations of underground polymeric L-shaped pipelines under seismic loading was conducted. The stress-strain state of the L-shaped polymeric pipeline subjected to seismic effect was determined, and the axial forces and bending moments arising in curved pipelines during an earthquake were determined.

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“…In a simplified one-dimensional formulation of the problem, wave propagation with external friction is considered, i.e. the forces acting on the outer surface of an extended body are included in the equations of motion [1][2][3][4]. Many problems [5][6][7][8][9], applied in the field of seismic resistance of underground pipelines, were solved in this formulation, with various types of external frictions.…”

Section: Introductionmentioning

confidence: 99%

Wave propagation in a cylindrical body in the presence of surface forces depending on the relative displacement

Rikhsieva,

Khusanov

2023

E3S Web of Conf.

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Studies of wave propagation in extended bodies with external friction have a wide range of applications and are significant for various engineering and scientific fields. They contribute to the development of new technologies, improve the design and construction of structures, and expand our understanding of the physical processes occurring in various materials and media. In this article, axisymmetric two-dimensional problems of the propagation of longitudinal waves in a cylindrical body are numerically solved in the presence of surface friction forces of the Winkler and Kelvin-Voigt types. For the numerical solution, the Wilkins scheme of the finite difference method was used. The influence of friction forces on the wave parameters is revealed. It is determined that the results of the considered problems are between solutions using slippery contact without friction and with friction according to the Coulomb law. A 5-7% deviation of the hypothesis of flat sections is shown, which makes it possible to reduce such a problem to a one-dimensional formulation.

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Seismic Behavior of Underground Polymer Piping with Variable Interaction Coefficients

Cited by 17 publications

References 0 publications

Vibrations of a Girder on Rigid Supports of Finite Mass Interacting With Soil under Seismic Loads

Vibrations of a Girder on Rigid Supports of Finite Mass Interacting With Soil under Seismic Loads

Underground polymeric l-shaped pipeline vibrations under seismic effect

Wave propagation in a cylindrical body in the presence of surface forces depending on the relative displacement

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