Experimental Assessment of Structural Damping of Industrial Boiler Structure

Shadan

2018

IJSI

Purpose The purpose of this paper is to examine the dynamical behavior of a combined three-story building with a 3D panel wall system including a soft story irregularity at the very first floor by doing a shaking table test. The upper two stories of the model were made out of the 3D panel system, while the first story was constructed only with moment-resisting RC frames. Design/methodology/approach Besides the experimental program, the numerical finite element method was implemented for the verification of the experimental results. In the experimental study, the building responses including the floors’ accelerations and drifts were considered, and the seismically vulnerable zones were reported and compared with that provided by the implemented FEM-based program. Findings After the shaking table test, the major cracks appeared at the end of each column and beam-column connections. Some negligible cracks were also visible around the beam-panel connections. However, no crack was seen in the upper stories. The lateral deformation of the studied building was investigated under the applied ELC25 and NGH135 earthquakes. Under the both aforementioned ground motion records, the first story drift was larger than two upper stories, since the moment-resisting frame was a soft story. The hysteretic relation between the shear and displacement for each story was studied. Under the applied ELC25 earthquake, the system remains linear and the stiffness of each story is obtainable as well. Originality/value This is the first time when the dynamical behavior of a combined system is studied and tested experimentally and numerically for data validation. Regarding the response of the assumed combined structure, the 3D panel system has a remarkable rigidity with respect to the conventional RC frames, also 3D panels have less weight than the moment-resisting frames.

Section: Methodsmentioning

confidence: 99%

A numerical and experimental study on the dynamical behavior of 3D-Panel Wall on Piloti RC Frame

Shadan

2018

IJSI

Civil and Environmental Engineering

“…The seismic design of cylindrical and rectangular tanks is recommended by various standards, their computational strategy is quite diverse, which in some cases leads to significantly different design forces [24 -26]. The best design codes for design solutions that deal with fluid tank systems are [27] API 650, 371 and 350.3, AWWA D100, AWWA D103, AWWA D110, AWWA D115, FEMMA 368, IBC 2000, ACI the Standards Association of New Zealand, NZSEE and Indian kóde IS 1893-1984 [28][29][30]. European Committee for Standardization set up European standard Eurocode 8 (2006) Design of structure for earthquake resistance -Part.…”

Section: Introductionmentioning

confidence: 99%

The Seismic Response of Fluid Filling in Rectangular Reservoir at Nador City Morocco

Kotrasová

Loukili

2020

This article deals with the liquid seismic effect owing to excitation of lateral base. When the rectangular reservoir contained the contained liquid vibrates, the liquid exerts the hydrodynamic pressure on the reservoir walls and the reservoir bottom. First the theoretical background of the fluid seismic effect on the solid domain of the rectangular reservoir is described in the paper. Thereafter, the rectangular fluid filing excited by the earth surface movement was calculated. The analysis of the liquid effect was situated for locality near Nador city at Morocco and respects of Eurocode recommendations.

“…The fluid flows causes sloshing of free surface. The free liquid surface may experience different types of motion including simple planar, non-planar, rotational, irregular beating, symmetric, asymmetric, quasi-periodic and chaotic [18,19]. The type of motion is depended on the container shape and type of excitation.…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis of Simply Supported Rectangular Tank Partially Filled with Water

Kotrasová

2018

MATEC Web Conf.

Ground-supported tanks are used as fluid storage. One of the phenomena associated with the seismic response of liquid-filled tanks is the fluid motion occurring that causes "sloshing" at the top of free surface. This paper presents the theoretical of fluid response of rectangular tank due to horizontal acceleration of tank bottom, the impulsive and convective (sloshing) pressure and the fluid natural frequencies. The vibration analysis of fluid filled rectangular container was monitored and was evaluated in experiment for purpose to evaluation of the first frequency mode and vibration response of fluid were analysed by using FEM.