Earthquake Design and Evaluation of Concrete Hydraulic Structures
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TOC
Chapt 1 Introduction
1.1 Purpose
1.2 Applicability
1.3 References
1.4 Distribution Statement
1.5 Mandatory Requirements
1.6 Scope
Chapt 2 Design Criteria
2.1 Design Earthquake ground Motion
a. General
b. Operational basis earthquake
c. Maximum design earthquake
2.2 Performance Levels
a. General
b. Serviceability performance
c. Damage control performance
d. Collapse prevention performance
2.3 Performance Goals
a. General
b. Ductile behavior
c. Limited-ductile behavior
d. Brittle behavior
2.4 Design Requirements
a. Strength design
b. Serviceability design
c. Loading combinations
(1) Earthquake strength design loading combination
(2) Serviceability loading combination
2.5 Performance Evaluation
a. Plain concrete structures
(1) General
(2) Response to internal force or displacement controlled actions
(3) Response to stability controlled actions
b. Reinforced concrete structures
(1) General
(2) Response to internal forces or displacement controlled actions
(3) Response to stability controlled actions
(4) Performance evaluation – DCR allowable values
2.6 Mandatory Requirements
Chapt 3 Estimating Earthquake Ground Motion Demands
3.1 Specification of Earthquake Ground Motions
a. General
b. Using response spectra for earthquake design and analysis
c. Standard response spectra
d. Site-specific response spectra
e. Acceleration time histories
f. Selection of records for deterministically defined and probabilistically defined earthquakes
3.2 Multi-Directional Effects
a. General
b. Percentage combination method
c. SRSS method
d. Critical direction of ground motion
e. Load combination cases for time-history analysis
3.3 Earthquake Demands on Inelastic Systems
a. General
b. Inelastic displacement demands
3.4 Mandatory Requirements
a. Standard spectra
b. Site-specific spectra
c. Acceleration time histories
d. Multi-directional effects
Chapt 4 Methods of Seismic Analysis and Structural Modeling
4.1 Progressive Analysis
4.2 Methods of Analysis
a. Seismic coefficient method
b. Equivalent lateral force method
c. Response spectrum-modal analysis procedure
d. Time history-modal analysis procedure
e. Nonlinear time history-direct integration procedure
4.3 Modeling of Structural Systems
a. Structure models
(1) General
(2) Frame type models
(3) 2D models
(4) 3D models
(5) SSI models
b. Foundation models
(1) Massless rock foundation model
(2) Viscoelastic rock foundation model
(3) Finite-element SSI model
(4) Lumped-parameter soil foundation model
c. Pile foundation models
(1) Single-pile kinematic seismic response analysis
(2) Pile-head stiffness or impedance functions
(3) Substructure method
(4) Complete or direct method of analysis
d. Fluid-structure interaction
e. Backfill-structure interaction effects
4.4 Effective Stiffness
a. Plain concrete structures
b. Reinforced concrete structures
4.5 Damping
4.6 Interaction with Backfill Soil
a. General
b. Dynamic pressures of yielding backfill
c. Dynamic pressures of non-yielding backfill
d. Intermediate case 4-15
4.7 Permanent Sliding Displacement
4.8 Mandatory Requirements
Chapt 5 Concrete Properties and Capacities
5.1 Plain Concrete Structures
a. General
b. Testing
c. Concrete Coring and Specimen Parameters
d. Dynamic properties
e. Capacity (strength)
5.2 Reinforced Concrete Structure
a. General
b. Compressive strains in CHS
c. Potential modes of failure
d. Shear (diagonal tension)
e. Sliding shear
f. Reinforcing steel anchorage
g. Reinforcing steel splices
h. Fracture of reinforcing steel
i. Flexure
5.3 Reinforced Concrete Displacement Capacities
5.4 Mandatory Requirements
a. Plain concrete structures
b. Reinforced concrete structures
Chapt 6 Analysis Procedures and Evaluation of Results Page
6.1 Introduction
6.2 Seismic Design and Evaluation Using DCR Approach
a. General
b. Flexural performance for MDE
c. Shear performance for MDE
d. Flexural performance for OBE
e. Shear performance for OBE
6.3 Linear Static Procedure and Linear Dynamic Procedure
a. General evaluation process
b. Evaluation process for plain concrete structures
c. Evaluation process for reinforced concrete structures
d. Evaluation process for gravity dams
(1) Response spectrum analysis
(2) Linear Time History Analysis
e. Evaluation process for arch dams
(1) Response spectrum analysis
(2) Linear time history analysis
f. Evaluation process for intake towers
(1) Response spectrum analysis
(2) Linear time history analysis
g. Evaluation process for locks
6.4 Acceptance criteria for linear-elastic analysis
a. ELF and response spectrum analysis 6-5
b. Pile interaction factors (demand-capacity ratios)
c. Time history analysis – reinforced concrete structures
d. Time history analysis – plain concrete structures
6.5 Nonlinear Static Procedure
a. Displacement ductility evaluation
b. Pushover method
6.6 Nonlinear Dynamic Procedure
a. General
b. Gravity dams
c. Arch Dams
d. Reinforced Concrete Structures
6.7 Design vs. Evaluation
6.8 Minimum Steel Requirements for New Reinforced Concrete
Structures.
6.9 Mandatory Requirements
a. Linear static and linear dynamic evaluations
b. Nonlinear static and nonlinear dynamic evaluations
c. Minimum reinforcing steel requirements
Chapt 7 Methods to Evaluate the Seismic Stability of Structures
7.1 Introduction
7.2 Rigid Structure vs. Flexible Structure Behavior…
7.3 Sliding Stability…
a. Seismic coefficient method
b. Permanent sliding displacement approach
(1) Upper-bound estimate – rigid behavior
(2) Upper-bound estimate – flexible behavior
c. Response history analysis procedure
(1) Linear time-history analysis
(2) Nonlinear time-history analysis
7.4 Rotational Stability
a. General
b. Tipping potential evaluation
c. Energy based-rotational stability analysis
d. Time-history and rocking spectrum procedures
(1) Time history and rocking spectra
(2) Governing equations
(3) Time history solution
(4) Rocking spectra
7.5 Mandatory Requirements
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