Kromel Hanna, Eliya Henin, Nathan Toneies, and Maher K. Tadros
Abstract
Glass fiber-reinforced polymer (GFRP) ties are used as structurally and thermally efficient shear connectors for precast concrete sandwich panels (PCSPs) to link two concrete wythes through a layer of insulation. The excellent mechanical properties and high thermal resistance of these ties have resulted in the growing use of PCSPs in building construction. This paper presents the use of PCSPs with GFRP ties in cladding panels. The lightweight, structural efficiency, thermal insulation, and speed of construction are the main advantages of these panels. This paper presents experimental investigation conducted on three cladding PCSPs to optimize the design of 16 ft wide and 8 ft high panels subjected to a wind load of 30 psf. Wythe thickness in all panels was 1 ¾ in., while the insulation thickness varied from 2½ in. to 3 in. Flexural capacity was determined by loading two simply supported panels at mid-span and one cantilevered panel at the free. Test results and failure modes indicate that the flexural capacity of all panels is adequate. Panels failed in horizontal shear as the GFRP ties were pulled out of the thin concrete wythes at ultimate loads. Minimum embedment depth of GFRP ties was also experimentally investigated. The minimum embedment of GFRP ties was determined based on the pull out force of 1/4, 3/8, and ½ in. diameter GFRP ties with embedment depths ranging from 0.5 in. to 2.5 in.
Publication Date
1/10/2011
Publisher
Proceeding of the PCI Convention and National Bridge Conference
ايليا عزت عشم حنين | Eliya Ezzat Asham Henin, Ph.D., P.E., S.E., PMP. | 5766