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ground supported tanks design spectral response accelerations

seismic design category map - tgkandassoc

Like those in the companion 2012 IBC,these maps are based on new risk-targeted ground motions developed via collaboration between USGS and the FEMA-supported Building Seismic Safety Council.Use our IBC Seismic Design Categories map to easily obtain the seismic design category and spectral response acceleration parameter (Section 1613 of the IBC 2015) for any location in the contiguous Welded Carbon Steel Tanks for Water Storage13.4 Pedestal-Type Elevated Tanks ..137 13.5 Ground-Supported Flat-Bottom 13.7 Foundation Design for Ground-Supported Flat-Bottom Tanks..151 13.8 Equivalent Metric Equations ..151 14 Alternative Design Basis for Standpipes and Reservoirs Earthquake Spectral Response Acceleration,5 Percent Damped,The Study of Seismic Response on Accelerated Contained FluidAbstractIntroductionSeismic Analysis of Liquid-Filled TanksNumerical Example and ResultsConclusionsAcknowledgmentsGround-supported cylindrical tanks are strategically very important structures used to store a variety of liquids.This paper presents the theoretical background of fluid effect on tank when a fluid container is subjected to horizontal acceleration.Fluid excites the hydrodynamic (impulsive and convective) pressures,impulsive and convective (sloshing) actions.Seismic response of cylindrical fluid filling tanks fixed to rigid foundations was calculated for variation of the tank slenderness parameter.The calculatinSee more on hindawiDesign,Construction and Operation of the Floating RoofFigure 2.11 Seismic Diagram for a Floating Roof Tank 60 Figure 2.12 Design Response Spectral for Ground-Supported Liquid Storage Tanks 65 Figure 2.13 Sloshing Period Coefficient,Ks 66 Figure 2.14 Response Spectrum Curve 69 Figure 2.15 Effective weight of Liquid ratio 70

Spectral Accelerations - Studylib

For each of these ground probabilistic maps for ground motion with 2 percent motions,probabilistic spectral ordinate maps were probability of exceedance in 50 years (approximately developed for peak ground accelerations and spectral 2,500-year return period),but with deterministic response accelerations at 0.2,0.3,and 1.0 seconds.values Simple Procedure for Seismic Analysis of Liquid-Storage TanksSolutions are presented for a range of tank dimensions and could be used for (1) preliminary design of head-supported cylindrical tanks and their supporting structures with idealized seismic input Significant changes from ASCE 7-05 to ASCE 7-10,part 1 The mapped peak ground accelerations in ASCE 7-10 Fig.22-7 through 22-11 are geomean values and not risk-targeted values.Thus,these are designated as MCE G peak ground accelerations,unlike the spectral accelerations in ASCE 7-10 Fig.22-1 through 22-6,which represent risk-targeted MCE or MCE R ground motion.

Seismic design of circular liquid-containing N.A.Legates

8,a single Equation is adopted for all tanks (Eq's (12) or (13)).Once the structural and fluid models are thus established,the ground motion is represented by a design response spectrum which is either derived from the actual earthquake record for the site,or is constructed by analogy to sites with known soil and seismic characteristics Seismic design of circular liquid-containing N.A.Legates8,a single Equation is adopted for all tanks (Eq's (12) or (13)).Once the structural and fluid models are thus established,the ground motion is represented by a design response spectrum which is either derived from the actual earthquake record for the site,or is constructed by analogy to sites with known soil and seismic characteristics Seismic analysis of cylindrical liquid storage tanks Jan 01,1989 ground supported tanks design spectral response accelerations#0183;The maximum ground acceler- ation,x and the spectral accelerations,S for the half-full and completely full tanks,as determined from the response spectra [19],illustrated in Fig.7 (for 2% damping),are 0.2 g,0.36g and 0.46 g,respectively.

Seismic analysis of cylindrical liquid storage tanks

Jan 01,1989 ground supported tanks design spectral response accelerations#0183;The maximum ground acceler- ation,x and the spectral accelerations,S for the half-full and completely full tanks,as determined from the response spectra [19],illustrated in Fig.7 (for 2% damping),are 0.2 g,0.36g and 0.46 g,respectively.Seismic Response of Ground Cylindrical and Elevated 5 DYNAMIC RESPONSE OF CYLINDRICAL GROUND-SUPPORTED TANKS 85 5.1 Introduction 85 5.2 Tank models properties 86 5.3 Free vibration analysis 87 5.4 Verification of numerical model 93 5.5 Effect of tank wall flexibility and vertical earthquake component 95 5.5.1 Dynamic behaviour of rigid tanks 96 5.5.2 Dynamic behaviour of flexible tanks 102Seismic Loads Based on IBC 2012/ASCE 7-10162 Determine the 5% damped design spectral response accelerations SDS at short period and SD1 at long period in accordance with IBC 1613.3.4.SDS =(2/3) SMS SD1 =(2/3) SM1 where SMS = The maximum considered earthquake spectral response accelerations for short period as determined in section 1613.3.3.

Seismic Ground Motion Values - -CUSTOMER VALUE-

Seismic Ground Motion Values.11.4 SEISMIC GROUND MOTION VALUES.11.4.1 Mapped Acceleration Parameters.The parameters S S and S 1 shall be determined from the 0.2 and 1.0 s spectral response accelerations shown on Figs.22-1 through 22-14,respectively.Where S 1,is less than or equal to 0.04 and S S is less than or equal to 0.15,the structure is permitted to be assigned to Seismic DesignSeismic Ground Motion Values - -CUSTOMER VALUE-Seismic Ground Motion Values.11.4 SEISMIC GROUND MOTION VALUES.11.4.1 Mapped Acceleration Parameters.The parameters S S and S 1 shall be determined from the 0.2 and 1.0 s spectral response accelerations shown on Figs.22-1 through 22-14,respectively.Where S 1,is less than or equal to 0.04 and S S is less than or equal to 0.15,the structure is permitted to be assigned to Seismic DesignSeismic Analysis of Liquid-Storage TanksLarge-capacity ground-supported cylindrical tanks are used to store a variety of liquids,e.g.water for drinking and fire fighting,petroleum,chemicals,and liquefied natural gas.Satisfactory performance of tanks during strong ground shaking is crucial for modern facilities.Tanks that were inadequately designed or detailed have suffered extensive damage during past earthquakes.Earthquake

Seismic Analysis of Liquid-Storage Tanks

Large-capacity ground-supported cylindrical tanks are used to store a variety of liquids,e.g.water for drinking and fire fighting,petroleum,chemicals,and liquefied natural gas.Satisfactory performance of tanks during strong ground shaking is crucial for modern facilities.Tanks that were inadequately designed or detailed have suffered extensive damage during past earthquakes.Earthquake Review of Seismic Codes on Liquid- Containing Tanksunied approach for seismic design of tanks is highlighted.DOI 10.1193/1.2428341 INTRODUCTION Liquid-containing tanks are used in water distribution systems and in industries for storing toxic and ammable liquids.These tanks are mainly of two types ground-supported tanks and elevated tanks.Ground-supported tanks are generally of Related searches for ground supported tanks design spectrdesign spectral response accelerationspectral response accelerationspectral response acceleration definitionspectral response acceleration calculatormapped spectral response accelerationdesign spectral responsespectral response acceleration parametersshort period spectral response accelerationSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextThe Study of Seismic Response on Accelerated Contained FluidGround-supported cylindrical tanks are strategically very important structures used to store a variety of liquids.This paper presents the theoretical background of fluid effect on tank when a fluid container is subjected to horizontal acceleration.Fluid excites the hydrodynamic (impulsive and convective) pressures,impulsive and convective (sloshing) actions.Seismic response of cylindrical

Related searches for ground supported tanks design spectr

design spectral response accelerationspectral response accelerationspectral response acceleration definitionspectral response acceleration calculatormapped spectral response accelerationdesign spectral responsespectral response acceleration parametersshort period spectral response accelerationPrevious123456NextSimple Procedure for Seismic Analysis of Liquid-Storage TanksSolutions are presented for a range of tank dimensions and could be used for (1) preliminary design of head-supported cylindrical tanks and their supporting structures with idealized seismic input Related searches for ground supported tanks design spectrdesign spectral response accelerationspectral response accelerationspectral response acceleration definitionspectral response acceleration calculatormapped spectral response accelerationdesign spectral responsespectral response acceleration parametersshort period spectral response accelerationPrediction of inelastic structural response using an ability in the structural response level has been ob-served for tall and long period buildings.This prob-lem,which is named as inefficiency of Sa,is in part due to the fact that it does not reflect important higher mode spectral accelerations and any spectral shape (Abrahamson Silva 1997).This question

Originally published in Research Collection Rights

accelerations that are several times greater than the peak ground acceler-ation.Thus,the base shear and over-turning moment calculated by assum-ing the tank to be rigid can be non-conservative.Tanks supported on flex-ible foundations,through rigid base mats,experience base translation and rocking,resulting in longer impulsiveNew York City Seismic Hazard Study And Its Engineering structure,with shorter continuous spans (120 ft to 150 ft long) supported on concrete piers 10 to 80 ft tall.The short periods correspond to the short piers,while the long periods relate to the taller piers.Panel recommended hard rock spectral response accelerations,in general,imply aMapped Acceleration Parameters UpCodesThe parameters S s and S 1 shall be determined from the 0.2 and 1-second spectral response accelerations shown on Figures 1613.3.1(1) through 1613.3.1(6).Where S 1 is less than or equal to 0.04 and S s is less than or equal to 0.15,the structure is permitted to be assigned to Seismic Design Category A.The parameters S S and S 1 shall be,respectively,1.5 and 0.6 for Guam and 1.0 and 0.4

MINIMUM COST SEISMIC DESIGN OF STEEL TANKS

3.2 Seismic excitation and response The seismic response of the tank-liquid system is determined on the basis of the following steps Step 1 Setting the maximum expected (design) ground acceleration,ag,the spectral accelerations SaS and SaF can be determinedHow to calculate spectral acceleration (design Traditionally,the seismic design basis ground motion has been specified by normalised response spectral shapes and peak ground acceleration (PGA).The mean recurrence interval (MRI) used to be How to calculate spectral acceleration (design Traditionally,the seismic design basis ground motion has been specified by normalised response spectral shapes and peak ground acceleration (PGA).The mean recurrence interval (MRI) used to be

Hazards - USGS

2018 Long-term National Seismic Hazard Map.Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in 50 years,for a firm rock site.The map is based on the most recent USGS models for the conterminous U.S.Ground Motions for Design - USGS Earthquake HazardDerivation of IBC Design Maps The ground motions for design that are mapped in the IBC are based on,but not identical to,the USGS Probabilistic Seismic Hazard Analysis (PSHA) Maps for 2% in 50 years probability of exceedance 0.2- and 1.0-second spectral acceleration (SA) The site-specific ground motion procedure in the building code explains the link between the two.Ground Acceleration - an overview ScienceDirect TopicsFigure 3.1.Response Spectrum Comparison Before and After Reducing PGA (a) Peak ground acceleration is 0.42g of original time process; Maximum value = 1468.30 m/g 2 (time 7 s).Sampling frequency = 50.00 Hz,(b) Peak ground acceleration reduced to 0.260g of time process.Maximum value = 484.75 m/g 2 (time 6.64 s).Sampling frequency = 50.00 Hz acceleration (m/s 2) (c) Response

Geotechnical Testing Laboratory,Inc.

Seismic Hazard Design Parameters,the project site has a mapped 0.2 second spectral response acceleration (Ss) of 0.127 g.The project also has a mapped 1.0 second spectral response acceleration (Sl) of 0.060.The design spectral response accelerations,SDS and SDl,were determined to be 0.212 g and 0.140 g,respectively.Geotechnical Testing Laboratory,Inc.Seismic Hazard Design Parameters,the project site has a mapped 0.2 second spectral response acceleration (Ss) of 0.127 g.The project also has a mapped 1.0 second spectral response acceleration (Sl) of 0.060.The design spectral response accelerations,SDS and SDl,were determined to be 0.212 g and 0.140 g,respectively.FEMA P-751 Chapter 3 Earthquake Ground MotionBSSC Project 97.That project also specified that the ground motion parameters be spectral response accelerations at vibration periods of 0.2 seconds and 1 second,for 5% of critical damping.For the average shear wave velocity at small shear strains in the upper 100 feet (30 m)

Determination of Standard Response Spectra and

Determination of Standard Response Spectra and Effective Peak Ground Accelerations for Seismic Design and Evaluation 5a.CONTRACT NUMBER 5b.GRANT NUMBER 5c.PROGRAM ELEMENT NUMBER 6.AUTHOR(S) 5d.PROJECT NUMBER 5e.TASK NUMBER 5f.WORK UNIT NUMBER 7.PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Design,Construction and Operation of the Floating RoofFigure 2.11 Seismic Diagram for a Floating Roof Tank 60 Figure 2.12 Design Response Spectral for Ground-Supported Liquid Storage Tanks 65 Figure 2.13 Sloshing Period Coefficient,Ks 66 Figure 2.14 Response Spectrum Curve 69 Figure 2.15 Effective weight of Liquid ratio 70Design Earthquake Response Spectrum Affected by Shallow Site response analyses were performed to investigate the earthquake response of structures with shallow soil depth conditions in Korea.The analysis parameters included the properties of soft soil deposits at 487 sites,input earthquake accelerations,and peak ground-acceleration levels.The response spectra resulting from numerical analyses were compared with the design response

Definition of Design Spectral Response Acceleration

The design base shear due to seismic force is found by the following parameters,1) spectral design response accelerations at very short periods,S DS,which can be specified for different oscillation frequencies with 5% dampness and 2) spectral design response accelerations at 1-second period,S350.3-06 Seismic Design of Liquid-Containing Concrete design the loading side (namely the determination of the seismic loads based on the mapped maximum considered earthquake spectral response accelerations at short periods (S s) and 1 second (S 1) obtained from the Seismic Ground Motion maps [Fig.22-1 through 22-14 of ASCE 7-05,Chapter 22] and the geometry of the structure); and the

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