Title:
Structural Performance of Precast Concrete Column Joint with Clamped Headed Bar during Construction
Author(s):
Seong Ryong Ahn, Han Suk Sung, and Thomas H.-K. Kang
Publication:
Structural Journal
Volume:
120
Issue:
3
Appears on pages(s):
245-256
Keywords:
construction load; mechanical splice; precast concrete (PC); serviceability; structural joint; structural safety
DOI:
10.14359/51738667
Date:
5/1/2023
Abstract:
Proposed is the use of a self-supporting precast concrete (SSPC)
system using clamped headed bars. The system provides structural safety and serviceability without the use of temporary bracing or guying during construction as well as in postconstruction. To verify the proposed system performance, nine mechanical splice component specimens and two full-scale precast concrete (PC) specimens were fabricated for material tests, mockup tests, and quasi-static pushover tests. To evaluate wind and impact resistance performance during PC construction, parametric studies for a temporary installation state were carried out based on the experimental results. Under potential wind and impact loads, the system displayed slip resistance in the elastic range as well as eccentric installation tolerance and satisfactory ultimate strength performance. Moment larger than the nominal flexural strength was also observed in the SSPC system.
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