Seismic Behavior of Reinforced Concrete Columns with PermanentTemplate of Ultra-High-Performance Concrete
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TU352

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    Abstract:

    To examine the seismic behavior of reinforced concrete (RC) columns with prefabricated ultra-high-performance concrete (UHPC) permanent templates and check whether the prefabricated permanent templates are stripped from the surface of the specimen under low-cyclic repeated loading. Pseudo-static tests were conducted for the comparative purpose of six permanent template columns (PTC) and one RC column with varying axial load ratio, shear span ratio, stirrup spacing, and concrete cover. The failure pattern, hysteretic characteristics, deformation capacity, energy dissipation capacity, and stiffness degradation of permanent template columns were studied. Test results showed that the permanent templates that were perpendicular to the direction of loading stripped at about 70% of the peak load; the permanent templates that were stripped at the final destruction of the specimen parallel to the direction of loading. Within the same shear span ratio, axial load ratio, and several stirrups, the seismic behavior of the specimen with the UHPC template and 10 mm concrete as the cover is relatively better than others, but its bearing capacity and prophase stiffness are slightly reduced.

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History
  • Received:January 20,2020
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  • Online: July 23,2020
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