TY - JOUR
T1 - An innovative pendulum-type column-in-column (PCIC) system for structural vibration control induced by seismic ground excitations
AU - Fang, Xiaojun
AU - Hao, Hong
AU - Bi, Kaiming
N1 - Funding Information:
The first author would like to acknowledge the support from Basic Innovation Program of Guangzhou University 2019GDJC-D09 for carrying out this research.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Recently, a sliding-type column-in-column (SCIC) system was proposed by the authors to reduce structural response using the TMD concept. The idea of the SCIC design is to split a column into an external and an internal column to form a nonconventional TMD system to control vibrations while not increasing the size nor compromising the load bearing ability of the column. It was found that the control effectiveness of this SCIC system became less effective when a large superstructure acting on the system. To overcome this drawback, the SCIC system is modified by converting the internal column into a pendulum TMD (PTMD) in this paper, i.e., forming a pendulum-type column-in-column (PCIC) system. To investigate the effectiveness of this novel system, the optimum design formulae of the system are firstly derived using the classical ‘fixed point’ theory. Sensitivity analyses are then carried out to validate the robustness of this system with respect to the superstructure mass, stiffness and damping of the PTMD. Nonlinear time history analyses are performed on the commercial software ABAQUS to demonstrate the control effectiveness. Both analytical and numerical results indicate that the proposed PCIC system shows a good robustness and performance in controlling seismic response of tall slender structures.
AB - Recently, a sliding-type column-in-column (SCIC) system was proposed by the authors to reduce structural response using the TMD concept. The idea of the SCIC design is to split a column into an external and an internal column to form a nonconventional TMD system to control vibrations while not increasing the size nor compromising the load bearing ability of the column. It was found that the control effectiveness of this SCIC system became less effective when a large superstructure acting on the system. To overcome this drawback, the SCIC system is modified by converting the internal column into a pendulum TMD (PTMD) in this paper, i.e., forming a pendulum-type column-in-column (PCIC) system. To investigate the effectiveness of this novel system, the optimum design formulae of the system are firstly derived using the classical ‘fixed point’ theory. Sensitivity analyses are then carried out to validate the robustness of this system with respect to the superstructure mass, stiffness and damping of the PTMD. Nonlinear time history analyses are performed on the commercial software ABAQUS to demonstrate the control effectiveness. Both analytical and numerical results indicate that the proposed PCIC system shows a good robustness and performance in controlling seismic response of tall slender structures.
KW - Numerical simulation
KW - Pendulum-type CIC system
KW - PTMD
KW - Sensitivity analysis
KW - Vibration control
UR - http://www.scopus.com/inward/record.url?scp=85124428251&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2022.113990
DO - 10.1016/j.engstruct.2022.113990
M3 - Journal article
AN - SCOPUS:85124428251
SN - 0141-0296
VL - 256
JO - Engineering Structures
JF - Engineering Structures
M1 - 113990
ER -