FraMCoS 7 2010 Jeju, South Korea

Behavior of anchor groups installed in cracked concrete under simulated seismic actions

For anchor group design, some or all of the anchors have to be assumed to be located in cracks. If installed in seismically active regions, the cracks open and close due to the cyclic response of the reinforced concrete structure…

First page of: Behavior of anchor groups installed in cracked concrete under simulated seismic actions
Year 2010
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Abstract

For anchor group design, some or all of the anchors have to be assumed to be located in cracks. If installed in seismically active regions, the cracks open and close due to the cyclic response of the reinforced concrete structure to the earthquake. Due to the different stiffness of the individual anchors and the rotation- restraint of the base plate, a re-distribution of the anchor forces in the group can take place. Further, the total displacement is reduced if compared to a single anchor located in a crack. This paper presents the results of experimental and numerical investigations carried out to check those group effects for various anchor types. A model was developed to simulate the group behavior during crack cycling.