We develop a novel replaceable energy dissipative device for precast concrete
beam-column connections. The device comprises two short concrete-filled steel tubes
and a web with a opening. To better understand the seismic behavior of the device,
four test specimens were subjected to a cyclic load and one specimen subjected to a
monotonic load. The load-carrying capacity, stiffness, hysteretic behavior, energy
dissipation capacity and ductility of the device were recorded. The test results
indicate that the device has excellent plastic deformation capacity, energy dissipation
capacity and ductility.
A parametric study was then carried out using finite element analysis, which showed that
the index
can
be used to characterize the bending deformation mechanical properties of the device; usually, a
larger value of
means that the device has better deformation and ductility capacity.
Finally, a numerical simulation analysis of a precast concrete beam-column joint
connected by the device proved that the seismic performance of the precast joint can
be significantly improved in terms of the deformation capacity, energy dissipation and
ductility, while the damage severity of the beam and column members is significantly
reduced.
Keywords
precast RC frame structure, beam-column connection, energy
dissipation device, FE model
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi
Province
Xi’an City, 710055
China
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi
Province
Xi’an City, 710055
China
College of Science
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi
Province
Xi’an City, 710055
China
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi
Province
Xi’an City, 710055
China
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi
Province
Xi’an City, 710055
China