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This paper presents a study on the behavior of the connections between precast concrete components which play an important role in determining the efficiency of precast concrete framed structures. The beam-to-column will affect the load... more
This paper presents a study on the behavior of the connections between precast concrete components which play an important role in determining the efficiency of precast concrete framed structures. The beam-to-column will affect the load distribution, strength, stability and constructability of the global structure. The experimental program comprised a total of seventeen specimens, which were designed, built, and tested to failure to determine their strength, stiffness and ductility properties under static incremental loading. The specimens tested represented five different types of beam-to-column connections and a monolithic connection which was used for the purposes of comparison.
The experimental work revealed that all the precast beam-to-column connections except Type A connection possessed flexural strength, stiffness, and ductility as well as the monolithic connection with Type B being superior to all other types. Based on the comparative study the tested connections except Type A can be used as monolithic connections in moment resisting framed structures. An analytical method, based on the previous proposed concept of the strut-and-tie model that satisfy equilibrium, compatibility and the constitutive laws of cracked reinforced concrete, was programmed to predict the horizontal shear strength of the beam-column joint. The experimental verification for the computer program of the proposed model and provisions of the ACI 318-08 strut-and-tie model were achieved by analyzing a total of 80 specimens (17 of the present work and 63 from the literature). Both methods showed good agreement with the experimental results.
The experimental work revealed that all the precast beam-to-column connections except Type A connection possessed flexural strength, stiffness, and ductility as well as the monolithic connection with Type B being superior to all other types. Based on the comparative study the tested connections except Type A can be used as monolithic connections in moment resisting framed structures. An analytical method, based on the previous proposed concept of the strut-and-tie model that satisfy equilibrium, compatibility and the constitutive laws of cracked reinforced concrete, was programmed to predict the horizontal shear strength of the beam-column joint. The experimental verification for the computer program of the proposed model and provisions of the ACI 318-08 strut-and-tie model were achieved by analyzing a total of 80 specimens (17 of the present work and 63 from the literature). Both methods showed good agreement with the experimental results.
