Solution

Indian Valley Reservoir

Newport Beach, CA

Service: Structural Investigation

Market: Water/Wastewater

Keywords: Finite Element Analysis, Flood, Risk Assessment, Seismic Analyses, Structural Adequacy Assessment

Client

Sage Engineers, Inc.

The Indian Valley Reservoir provides long-term irrigation storage and flood control. A 2010 inspection report recommended seismic analyses of the floodgates and control structure to confirm the gates could be raised following a earthquake. SGH evaluated the seismic performance of the two structures.

Scope | Solutions

SGH assessed the expected performance of the structures in a maximum design earthquake when the reservoir water level is at its maximum level under normal operating conditions. Highlights of our work include the following:

Developed finite element models of the reinforced concrete control structure and steel radial arm tainter gates
Evaluated the control structure for uncracked and cracked conditions
Analyzed the gates for both downstream and cross-steam loading
Compared the anticipated demands to the structures’ capacities
Concluded a maximum design earthquake should not cause deformations or damage that would prevent the gates from opening

Simpson Gumpertz & Heger

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Indian Valley Reservoir

Client

Scope | Solutions

Project Contact(s)

Philip Hashimoto