Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

This paper describes the details of the seismic analyses undertaken to retrofit the Kersland drinking water reservoir in Vancouver, British Columbia, Canada. The reservoir has a storage capacity of about 67 million litres, measures approximately 100 m by 150 m, and is partially buried. The walls are supported by above-ground soil berms. Seismic upgrading of the reservoir required an assessment of the loads imposed on the perimeter walls of the reservoir due to the design seismic event. The problem of soil-structure and structure-fluid interaction during seismic loading is complex, and could significantly increase the lateral forces on the reservoir wall. Seismic response analysis of the soil-structure system was carried out using the finite element program FLUSH. Modeling the effects of water under earthquake loading was included as convective and impulsive forces using a series of lumped masses attached to selected structural beam element nodes and a horizontal spring. The bending moments and shear forces in the reservoir wall, and seismic earth pressures exerted by the soil on the wall were obtained for detailed structural analyses. The results of FLUSH analyses were compared with the available closed-form solutions.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-26-2001

Document Version

Final Version

Rights

© 2001 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 26th, 12:00 AM Mar 31st, 12:00 AM

Seismic Analysis of a Partially-Buried Drinking Water Reservoir

San Diego, California

This paper describes the details of the seismic analyses undertaken to retrofit the Kersland drinking water reservoir in Vancouver, British Columbia, Canada. The reservoir has a storage capacity of about 67 million litres, measures approximately 100 m by 150 m, and is partially buried. The walls are supported by above-ground soil berms. Seismic upgrading of the reservoir required an assessment of the loads imposed on the perimeter walls of the reservoir due to the design seismic event. The problem of soil-structure and structure-fluid interaction during seismic loading is complex, and could significantly increase the lateral forces on the reservoir wall. Seismic response analysis of the soil-structure system was carried out using the finite element program FLUSH. Modeling the effects of water under earthquake loading was included as convective and impulsive forces using a series of lumped masses attached to selected structural beam element nodes and a horizontal spring. The bending moments and shear forces in the reservoir wall, and seismic earth pressures exerted by the soil on the wall were obtained for detailed structural analyses. The results of FLUSH analyses were compared with the available closed-form solutions.