Experimental study on seismic behavior of prefabricated RC frame joints with T-shaped columns

Experimental study on flexural behaviour of prefabricated concrete beams with double-grouted sleeves

“…The stiffness degradation under loading can represent the accumulation of internal structural damage and the structural capacity to resist deformation, which can be used to evaluate the mechanical behaviour of a structural member and aid in the design and modelling of a structural subassembly 10 [50][51][52][53][54]. The initial stiffness 𝐾 1 , secondary stiffness 𝐾 2 , and third equivalent stiffness 𝐾 3 can be calculated based on the characteristic parameters obtained from Tables 5 and 6, which can be described as follows:…”

Seismic Performance and Calculation Method of Precast Reduced Beam Section Connection

“…Reza et al [15] proposed a rubber-steel core damper for beam-to-column connections, where the combination of core steel and rubber improved the post-earthquake repairability of the connection. Huang et al [16] conducted rapid repairs of a frame structure that had been damaged by an earthquake, and their study showed that the reinforced structure still exhibited good seismic performance. Ma et al [17] proposed an artificial energy-dissipation plastic hinge and conducted an experimental study, which showed that the proposed plastic hinge can effectively control the plastic damage location and concentrate the energy dissipation at the plastic hinge.…”

Dynamic response of monolithic and precast concrete joint with wet connections under impact loads

“…Currently, PC joints with wet connections are widely used in PC structures since they exhibit a similar capacity to conventional monolithic reinforced concrete (RC) joints through the emulative design method [5][6][7]. With regard to wet connections, various connecting techniques such as grouted sleeve [8,9], lap-splice [10,11], and 90° bend [1,12,13], are employed to ensure the continuity of longitudinal rebars inside PC beams and columns. In addition, the interface of PC components is usually roughened in advance to increase the bond strength between PC and cast-in-place concrete (CIPC) components [7,12].…”

“…The poor design of wet connection would cause the premature failure of PC beam-column joints [16]. The performances of PC beam-column joints with wet connections under cyclic loading [2,8,17] and static pushdown loading [18,19] have been investigated in the previous studies. It is found that the failure modes of PC joints with wet connections were different from those of monolithic RC joints.…”