Simulation of the seismic response of a bridge column using ultra high performance steel fiber-reinforced concrete jackets

Date

10-2013

Degree

Bachelor of Science in Civil Engineering

Adviser/Committee Chair

Richelle G. Zafra

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

In the event of an earthquake, the plastic hinge region of bridge columns are subjected to large moment and large flexural deformation leading to the deterioration of column strength. This is primarily due to concrete compression failure which leads to crushing and spalling of cover concrete and eventually buckling of longitudinal bars. To enhance the seismic performance of bridge columns, the conventional concrete cover at the plastic hinge is replaced with an Ultra-high performance steel fiber-reinforced concrete (UFC) which has an extremely high compressive strength. Experimental investigations on the seismic performance of bridge columns, with UFC precast jackets at the plastic hinge, subjected to cyclic loading were previously conducted. To develop analytical methods which can simulate the nonlinear response of columns with UFC, this study conducted a lumped plasticity modelling in OpenSEES to simulate the column seismic response of an experiment cited in literature. It was found that the model provides a good approximation of the envelope curve of the lateral force versus displacement hysteresis. The stress-strain diagrams of the concrete, UFC and reinforcing steel of the model gives a good representation of the damage sustained by UFC column in the experiment.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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