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Non-linear seismic analysis of a one-storey precast concrete building

University of British Columbia

A non-linear seismic analysis of a one-storey box-type precast concrete building with discrete connections between precast elements is presented. The building is idealized as a single-degree spring-mass-damper system. The inelastic spring represents the total lateral resistance provided by the shear walls, which are in turn idealized as series of rigid panels connected together by non-linear connection springs. Hysteretic models for connections are derived based on results from experiments in which simulated earthquake loading was applied to various isolated connections. The response of the building to various earthquake ground motions is determined using a time-step calculation method. The effects of different connection characteristics on the seismic response of the building are studied, and the behaviour of the building as predicted by the non-linear analysis is compared with the behaviour implied by the assumptions that underly the code provisions. Results of this study indicate that a one-storey precast concrete building designed using the quasi-static force method can resist a major earthquake without serious distress in the connections. In order to reduce the seismic forces, base connections with high tensile strength across the connecting interface and overdesigned vertical connections between wall panels must be avoided.

Text

2010-05-24

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http://hdl.handle.net/2429/24952

Civil Engineering

University of British Columbia

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