Time-History Dynamic Analysis of Concrete Hydraulic Structures
ENGINEERMANUAL
AVAILABILITY
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U.S.Army Corps of Engineers DEPARTMENTOFTHEARMY Washington DC 20314-1000
TIME-HISTORYDYNAMICANALYSIS Engineeringand Design OFCONCRETEHYDRAULICSTRUCTURES
1.Purpose. This manual describes procedures for the linear-elastic time-history dynamic analysis anddevelopment of acceleration time-history dynamic analysis for seismic design and evaluation of concretehydraulic structures (CHS). The manual also provides guidance on the formulation and performance of the linear-elastic time-history dynamic analyses and how the earthquake input time-history are developedand applied.
2. Applicability. This manual applies to all USACE mands having responsibility for civil worksprojects.
3.Distribution. Approved for public release; distribution is unlimited.
4.Discussion. Chapter 1 provides an overview of the seismic assessment process for CHS and theresponsibilities of the project team involved in the process. In Chapter 2 methodology for analyticalmodeling of concrete hydraulic structures is discussed including types of CHS analytical modeling procedures fluid-structure interaction and foundation-structure interaction.Chapter3describes timehistory numerical solution techniques.Chapter 4 describes methodology for structural performance andExamples of earthquake response evaluation are provided in Chapter 6. damage criteria.Chapter 5 describes methodology for developing of acceleration time-histories.
FOR THE COMMANDER:
6 Appendices(See Table of Contents)
DEPARTMENTOFTHEARMY U.S.Army CorpsofEngineers Washington DC 20314-1000
TIME-HISTORYDYNAMICANALYSIS Engineering and Design OFCONCRETEHYDRAULICSTRUCTURES
Table of Contents
Subject
Paragraph Page
Introduction Purpose. 1-1 1-1Applicability 1-2 1-1References. Scope. 1-3 1-4 1-1 1-1Explanation of Symbols and Acronym.. 1-5 1-1Responsibilities of Project Team Overview of Seismic Design and Evaluation Procedure . 1-6 1-7 1-2 1-2
Chapter2
Analytical Modeling of Concrete Hydraulic Structures
Types of Concrete Hydraulic Structures General. 2-1 2-2 2-1 2-1Concrete Gravity Dams.. 2-3 2-1Concrete Arch Dams. Intake-Outlet Towers 2-4 2-5 2-3 2-3U-frame and W-frame Navigation Locks . 2-6 2-4Massive Concrete Guide Walls. Massive Concrete Lock Walls. 2-7 2-8 2-4 2-4Analytical Modeling Procedures . Substructure Method. 2-10 2-9 2-5 2-5Standard Finite Element Method 2-11 2-8Concrete Gravity Dams.. Concrete Arch Dams. 2-12 2-13 2-9 2-10Intake-Outlet Towers 2-14 2-13U-frame and W-frame Navigation Locks Massive Concrete Lock Walls. .2-15 .2-16 2-18 2-22Massive Concrete Guide Walls. 2-17 2-23
Subject
Fluid-Structure Interaction. 2-18
22 Dec 03 EM 1110-2-6051
Simplified Added Hydrodynamic Mass Model . 2-19 2-25Finite Element Added Hydrodynamic Mass Model. Compressible Water with Absorptive Boundary Model... .2-20 .2-21 2-30 2-35Reservoir Boundary Absorption .. 2-22 2-36Foundation-Structure Interaction Rock Foundations .... 2-23 2-24 2-37 2-37Soil and Pile Foundations ... 2-25 2-38
Chapter3
Time-History Numerical Solution Techniques
Equation of Motion Introduction. 3-1 3-2 3-1 3-1Direct Integration.. Mode Superposition. 3-4 3-3 3-2 3-4Stability and Accuracy Considerations. 3-5 3-5Frequency Domain-Based Solutions .. Transfer of Acceleration Time-History to the Frequency Domain.. 3-6 3-7 3-6 3-6Frequency Response Functions.. Frequency Response Functions. 3-8 3-8Computation of Structural response. 8-... 3-9 3-10 3-8Selection of Parameters for Frequency Domain Analysis 3-10 3-10
Chapter4
Structural Performance and Damage Criteria
General. 4-1 4-1Basis for the Proposed Performance and Damage Criteria. ..4-2 4-1Gravity Dams.. Arch Dams.. 4-3 4-4 4-5 4-9Navigation Locks. 4-5 4-27Free-Standing Intake Towers.. 4-6 4-35
Chapter5
Development of Acceleration Time-Histories
Introduction... 5-1 5-1Overview of Approach for Time-History Development. 5-2 5-3 5-1 5-3Simple Scaling Approach to Final Development of Acceleration Initial Selection of Time-Histories..Spectrum-Matching Approach to Final Development of Time-Histories 5-4 5-10Acceleration Time-Histories... 5-5 5-12Modifying Time-Histories for Site Response Effects. 5-6 5-16
