Abstract
This paper presents a new-type of fabricated beam-column connections with end plates. The joint details are as follows: the concrete beams are connected to column by end plates and six high strength long bolts passing through the core area. In addition, in order to increase the stiffness and shear strength, stirrups are replaced by the steel plate hoop in the core zone. To examine the fail behavior of the fabricated beam-column connection specimens, a quasi-static test is conducted for nine full-scale models to obtain the hysteresis curves, skeleton curves, ductility, energy dissipation capacity, and other seismic indicators. The experimental results show that all specimens failed in bending in a malleable way with a beam plastic hinge and the hysteresis curves are excellently plump for the end plate connections. From the seismic indexes, the fabricated connection specimens exhibit better seismic performance, which can provide reference for the application of prefabricated frame structure in the earthquake area.
Highlights
The advantages of prefabricated frame structure include simple construction, flexible arrangement, and green environmental protection, which fully reflects the industrial character of modern architecture
Mao et al [1] put forward a new combination of bolt end plate connection steel beam-reinforced concrete column node and conduct simulated seismic loading test; the results showed that the steel beam-reinforced concrete column composite joint with high strength bolted end plate was used as a new-type of joint, which has excellent seismic performance and excellent construction performance
To investigate the seismic behavior of the prefabricated node, a quasi-static test is conducted for nine real-size beam-column connections
Summary
The advantages of prefabricated frame structure include simple construction, flexible arrangement, and green environmental protection, which fully reflects the industrial character of modern architecture. The mechanical properties of unbonded prestressed concrete frame joints under low cyclic loading tests were studied by Dong et al [14]; the results indicated that the unbonded prestressed concrete frame joints have good seismic performance, and the ductility and deformation recovery ability are better than the cast-inplace frame node. The unbonded prestressed concrete structure has the advantages of strong deformation recovering capacity, better cracking resisting capacity, high stiffness, and ductility. At present, it has been adopted in multistorey and highrise structures, such as Paramount Building, Guangdong International Building, New Century Building, and Nanjing TV Tower.
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