Attaining Optimum Passive Control in Liquid-Storage Tank by Using Multiple Vertical Baffles

Vern, Sourabh; Shrimali, Mahendra Kumar; Bharti, Shiv Dayal; Datta, T. K.

doi:10.1061/(asce)sc.1943-5576.0000586

Cited by 8 publications

(2 citation statements)

References 45 publications

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“…Because of the great bulk of the tank and the concentration of water at a height from the base, water tanks are very vulnerable to earthquake loading and suffer severe damage from the trembling of the ground. Seismic waves, which carry the vast majority of the energy generated by this phenomena, travel all the way from the point of origin to the water tank, where they may have a variety of effects according to their Peak ground acceleration, frequency contents, and effective duration of the ground motion [2].…”

Section: Introductionmentioning

confidence: 99%

Water tank Seismic Analysis Noting Effect on time Period

Bahuguna¹

2022

MSEA

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In the case of an earthquake, an elevated water tank is a crucial building component. In order to store water at a constant level, an elevated water tank is built and height for water distribution system pressurization. Uplifted water tanks, as was learned the hard way, suffered significant damage or collapsed during earthquakes. As a result of the raised water tanks' extreme sensitivity to earthquake parameters including peak ground acceleration, frequency contents, and duration records. The purpose of this study is to gain insight into the dynamic behavior of an elevated water tank fitted with a UG sump subjected to various recorded ground vibrations from earthquakes. An RCC square water tank with 14-, 17-, and 20-meter staging heights was subjected to a Time History Analysis using StaadPro software to simulate the effects of five distinct seismic ground movements. Roof displacement, velocity, acceleration, base shear, drift, and natural frequency were measured and compared for three different tank fill levels: empty, halfway, and full. Bhuj earthquake ground motion was the strongest, whereas Kobe earthquake ground motion was the weakest.

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Section: Introductionmentioning

confidence: 99%

Water tank Seismic Analysis Noting Effect on time Period

Bahuguna¹

2022

MSEA

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“…As the finite element approach becomes more robust in solving the fluid sloshing and isolators' nonlinear behavior, several researchers obtain the solutions by this novel approach [22][23][24][25][26][27]. Extending the FEM, various studies were conducted to obtain the base-isolated LSTs' solutions under seismic excitation.…”

Section: Introductionmentioning

confidence: 99%

Response and damage evaluation of base-isolated concrete liquid storage tank under seismic excitations

et al. 2021

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The present study analyzes flexible rectangular concrete base-isolated liquid storage tanks (LSTs) for bi-directional earthquakes. The base-isolated LST is modeled in ABAQUS finite element software. The liquid is modeled by the Equation of State (EoS) with arbitrary Lagrangian-Eulerian (ALE) remeshing algorithm, whereas the hexahedral solid finite elements model LST. Nonlinear time history analysis is performed by considering the LSTs' material nonlinearity and the nonlinearity produced in LST due to the water-structure interaction. As illustrative examples, different LSTs are considered in the present study with five lead rubber bearing (LRB) isolators each, four at the corners and one at the center. The parameters varied for analysis are the isolators' effective frequency, peak ground acceleration (PGA), height of water, and aspect ratio of LSTs. The response quantities of interest include Tresca stress, sloshing height, hydrodynamic pressure, overturning moment, and base shear. The numerical study results show that the liquid's sloshing increases by about 20%-30% at optimum frequency. Still, the forces induced in the tank are considerably reduced. The height of water, and aspect ratio of LSTs significantly influences the response behavior of the isolated tank.

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