Seismic response evaluation of the RC elevated water tank with fluid-structure interaction and earthquake ensemble

Omidinasab, Fereydoon; Shakib, Hamzeh

doi:10.1007/s12205-011-1104-1

Cited by 8 publications

(6 citation statements)

References 25 publications

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“…At the end of the seismic ground motion duration, large-scale damage occurred to the aqueduct support frame, resulting in a slight deviation from the structure displacement relative to the foundation. (3) Through the analysis of the damage development rule, it discoveries that the failure position of aqueduct structure is mainly focused on the intersection place of pier cap and bent column, and the intersection place of the bent column and the foundation of an aqueduct. It can be seen that the damage at the bottom of the pier cap appears a general down-slope tendency.…”

Section: Discussionmentioning

confidence: 99%

“…To date, many achievements have been made in studying the mechanical properties of aqueducts. Following the existing theory regarding small amplitude water sloshing, fluid-structure interaction between water and structure is usually considered in the previous dynamic analysis of water tanks [1][2][3]. The water tank and aqueduct are similar in structures, so some scholars considered the effect of fluid-structure interaction examined the dynamic failure mechanism of the aqueduct structures under earthquake ground motion [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Study on Earthquake Damage Mechanism of Aqueduct Structure Based on Different Boundary

Liu

Zhang

et al. 2020

CEJ

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Numerically simulating an infinite domain foundation is an important method for solving structural dynamics problems. This paper introduces several artificial dynamic boundaries commonly used in the study of structural dynamics, and elaborates the theory and methods of the dynamic infinite element method boundary (IEMB) and viscous–spring artificial boundary (VSAB). The capacity of different boundary effects on seismic waves energy absorption is verified by establishing a layered half-space model. An irrigation aqueduct is taken as a research object. The IEMB, VSAB, and fixed boundary (FB) models are established and the Concrete Damaged Plasticity (CDP) constitutive is introduced, which is aimed at studying the dynamic failure mechanism and the rules of damage development to the aqueduct structure during the seismic duration. The results for the IEMB and VSAB show better energy absorption for the incident waves and a better simulation result for the damping effect of the far field foundation than that of the FB. Comparing the maximum displacement response rules of the three boundaries, it is seen that the maximum displacement response values of the VSAB and dynamic IEMB increased by 6%–48% and 9%–35%, respectively, over the FB. The calculation results of the VSAB are similar to that of the IEMB. The difference between the maximum acceleration response values is 2%–17% whereas the difference between the maximum displacement response values is 0.4%–19%. The IEMB studied in this paper provides a theoretical reference for large–scale building boundary treatment in structural dynamics calculations.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Earthquake Damage Mechanism of Aqueduct Structure Based on Different Boundary

Liu

Zhang

et al. 2020

CEJ

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“…Usually, the impulsive mass is added to the tank mass and the system is reduced to two mechanical degrees of freedom, whereas here it is assumed that the impulsive mass is coupled in a stiffer way to the tank than the sloshing mass. [30][31][32][33][34][35] Thus far, the usage of the Gaussian closure technique is limited either to the SDOF case with the transient response to a time-dependent loading and a dead load 29 or the MDOF case with a symmetric stationary white noise load. 24 Here, the features of the SDOF model will be extended to the MDOF case.…”

Section: Introductionmentioning

confidence: 99%

Gaussian closure technique for a simple tank model with non-zero mean random load and elasto-plasticity

Waubke

Kasess

2022

Journal of Low Frequency Noise, Vibration and Active Control

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Previously, it was shown how the behavior of chain-like structures including hysteretic elements as described by the Bouc model under white noise excitation can be calculated using Gaussian closure. The method results in analytic expressions for the temporal evolution of the statistical moments. Using the example of a liquid-filled tank, the Gaussian closure is generalized to the case of a filtered white noise with a slowly varying intensity as may occur during earthquakes. The complexity of the model is further enhanced for a case that lacks an elastic restoring force at the hysteretic node that couples the tank model with the surface. The new tank model comprises three mechanical degrees of freedom. The first degree of freedom is the movement of mass of the tank. The second degree of freedom is the movement of the swapping mass of the fluid in the tank. The third degree of freedom is the movement of the impulsive mass that is coupled more stiffly.

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“…Shakib et al [13] investigated the filling level of the tank supported by a moment-resisting frame by using FE analysis subjected to horizontal seismic excitations. Their findings indicated that the maximum response does not always occur in the full tank case.…”

Section: Introductionmentioning

confidence: 99%

Effect of Supporting System on Dynamic Buckling of Elevated Water Tanks: A Case Study

Djelloul¹,

Djermane²,

Sharari³

2020

IJSSE

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The elevated water tanks are high importance structures for the humanity lifelines. These elevated tanks are considered as very sensitive structures for seismic movement conditions. Among the reasons for the damage and failure of elevated tanks is the design of its support systems. For this reason, several theoretical and experimental researchers studied the performance of this type of structure under seismic loading. The present study aims to demonstrate the supporting system effect on dynamic buckling of the elevated water tank, using three dimensional finite element technique the seismic response of two elevated water tanks was established taking into account the following factors; the fluidstructure Interaction (FSI), the wall flexibility, different nonlinear time histories analysis, and the material and geometric nonlinearity. Indeed, the application of three different instability criteria for the critical PGA estimate using two seismic excitations, namely El Centro and San Fernando earthquake. The numerical values are compared and no significant effect is found of the supporting system for convective fundamental frequency; however, strongly disturbed impulsive fundamental frequency. In addition, the effect of supporting system and the frequency content of the earthquake on PGAcr are clearly shown. A percent increase of PGAcr can reach up to 37.48%.

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Seismic response evaluation of the RC elevated water tank with fluid-structure interaction and earthquake ensemble

Cited by 8 publications

References 25 publications

Study on Earthquake Damage Mechanism of Aqueduct Structure Based on Different Boundary

Study on Earthquake Damage Mechanism of Aqueduct Structure Based on Different Boundary

Gaussian closure technique for a simple tank model with non-zero mean random load and elasto-plasticity

Effect of Supporting System on Dynamic Buckling of Elevated Water Tanks: A Case Study

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