FE Simulation of Full FE Simulation of Full - - Scale Dynamic Structure Scale Dynamic Structure Response including Damage Response including Damage Dr. Chris L. Mullen, P.E. Associate Professor of Civil Engineering Composite Structures and Nano-engineering Group Director, Center for Community Earthquake Preparedness Seminar on Blast Survivability ERDC Geotechnical and Structures Lab Vicksburg, MS September 23, 2004
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FE Simulation of FullFE Simulation of Full--Scale Dynamic Structure Scale Dynamic Structure Response including DamageResponse including Damage
Dr. Chris L. Mullen, P.E.Associate Professor of Civil Engineering
Composite Structures and Nano-engineering GroupDirector, Center for Community Earthquake Preparedness
Seminar on Blast SurvivabilityERDC Geotechnical and Structures Lab
Disaster Resistant University (MEMA/FEMA, 2004, 2 yr)Disaster Resistant University (MEMA/FEMA, 2004, 2 yr)Estimated MultiEstimated Multi--Hazard Damage and Losses on Ole Miss Hazard Damage and Losses on Ole Miss CampusCampus
State Hazard Mitigation Plan for MS (MEMA, 2003, 1 yr)State Hazard Mitigation Plan for MS (MEMA, 2003, 1 yr)Estimated Damage and Losses for General Building Stock Estimated Damage and Losses for General Building Stock and Essential Facilities in Mississippiand Essential Facilities in Mississippi
US90 West Pascagoula Bridge Demolition (MDOT, 2001)US90 West Pascagoula Bridge Demolition (MDOT, 2001)Simulated Response of Main Span Bents to Demolition BlastsSimulated Response of Main Span Bents to Demolition Blasts
Ole Miss Oxford Campus (MEMA, 1999, 4 yr)Ole Miss Oxford Campus (MEMA, 1999, 4 yr)Selected Essential FacilitiesSelected Essential Facilities--Educational InstitutionEducational Institution
Baptist Memorial HospitalBaptist Memorial Hospital--DeSotoDeSoto (CUSEC, 1997, 1 yr)(CUSEC, 1997, 1 yr)Critical Facility for MemphisCritical Facility for Memphis--Emergency ResponseEmergency Response
SymposiumSymposium4 4 thth Int. Conf. Recent Adv. in Int. Conf. Recent Adv. in GeotechGeotech. EQE & Soil . EQE & Soil DynDyn..SoilSoil--Structure Interaction under Dynamic Loading, Structure Interaction under Dynamic Loading, for both Shallow and Deep Foundationsfor both Shallow and Deep Foundations
Universities: Ole Miss, Oxford Campus
EOC: Safe Room (Proposed), City Hall, Oxford
Fire Station: Station No. 1, City of Oxford
Oxford Fire Station No. 1 Emergency Response Facility
Schools: Oxford High School
Design Issues for a RC Office Building in Southaven, MSDesign Issues for a RC Office Building in Southaven, MS(Ph.D. Dissertation, I. M. K. (Ph.D. Dissertation, I. M. K. IsmailIsmail, 2000), 2000)
Standard Building Code (1994) Standard Building Code (1994) Analysis ProceduresAnalysis Procedures
If regular and H < 240 ft:Equivalent Lateral Force (Linear Static with Reduction for Inelastic Response)V = Cs W
If irregular or H > 240 ft:Modal Analysis (Linear Dynamic with Modal Reduction)x(t) = ∑ Xi zi(t) where (K- w2 M) Xi = 0
If approved by building official!:Time History(Nonlinear Dynamic, Only one that Satisfies Equilibrium)M a + C v + K d = P(t) where K=K(d)
Reinforcement Design Reinforcement Design U= (0.9+0.5 Av) D + L + E or U = (0.9U= (0.9+0.5 Av) D + L + E or U = (0.9--0.5 Av) D + E0.5 Av) D + E
ColumnType
Ultimate DesignAxial loadPu (Kips)
Ultimate DesignMoment (x-dir)
Mxu (ft-Kips)
Ultimate DesignMoment (y-dir)
Myu (ft-Kips)
ConcreteDimensions
(in)Reinforcement
A 120 56 47 12 X 12 4 # 10
B 240 63 43 12 X 20 6 # 7
C 225 65 59 12 X 16 4 # 10
D 465 74 44 12 X 24 4 # 7
Col. A12 "
12 "4 #10
Tie #3@12
Col. C12 "
16 " 4 #10
Tie #3@12
Col. B
12 "
20 "
6 #7Tie
3@12"
Col. D12 "
6 #7
Tie3@12"
Story Drifts and StabilityStory Drifts and Stability
∆
V P
θ < 0.10Neglect P- Delta
(∆/ h) < 0.10Story Drift OK
h
StoryLevel
Height hx (ft)
Gravity Load Pi =∑ Wx (k)
LongitudinalStory Drift
∆i (in)
Transverse Story Drift
∆i (in)
Story ShearVi (k)
Transverseθ =Pi ∆i / Vi hi
Longitudinalθ =Pi ∆i / Vi hi
1st Story 12 1140 0.17 0.27 91.2 0.025 0.016
2nd Story 24 760 0.13 0.20 76.0 0.014 0.008
3rd Story 36 380 0.06 0.08 45.6 0.005 0.004
Final DesignFinal Design-- Seismic LoadSeismic Load
Fundamental Free Vibration Modes of the Building Fundamental Free Vibration Modes of the Building 3D ABAQUS3D ABAQUS-- No SoilNo Soil--Structure Interaction (SSI)Structure Interaction (SSI)
Fundamental Free Vibration Modes of the Building Fundamental Free Vibration Modes of the Building 3D ABAQUS w3D ABAQUS with SSIith SSI
Generation of Synthetic Earthquake MotionsGeneration of Synthetic Earthquake Motions
Layer-1
Layer-2
Layer-3 Soil
Prof
ile(P
roS
hake
Inpu
t)
New MadridFault
Bedrock Acceleration Used inthe Soil Models
(SMSIM output)(ProShake Input)
Ground Surface AccelerationUsed in the Fixed-base and