Numerical Study on Nonlinear Semiactive Control of Steel-Concrete Hybrid Structures Using MR Dampers

Controlling the damage process, avoiding the global collapse, and increasing the seismic safety of the super high-rise building structures are of great significance to the casualties’ reduction and seismic losses mitigation. In this paper, a semiactive control platform based on magnetorheological (M...

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Bibliographic Details
Published in:Mathematical problems in engineering 2013-01, Vol.2013 (2013), p.1-9
Main Authors: Xu, Long-He, Lv, Yang, Li, Zhong-Xian
Format: Article
Language:English
Subjects:
Active control
Active damping
Aseismic buildings
Buildings
Casualties
Civil engineering
Concrete
Control algorithms
Control systems
Control systems design
Controllers
Damage
Dampers
Deformation
Design
Earthquake construction
Earthquake damage
Earthquakes
High rise buildings
Hybrid structures
Mathematical models
Mathematical problems
Mechanics
Nonlinear control
Nonlinearity
Numerical analysis
Performance evaluation
Platforms
Seismic engineering
Semiactive damping
Shear
Steel structures
Structural damage
Structural engineering
Structural steels
Studies
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Summary:Controlling the damage process, avoiding the global collapse, and increasing the seismic safety of the super high-rise building structures are of great significance to the casualties’ reduction and seismic losses mitigation. In this paper, a semiactive control platform based on magnetorheological (MR) dampers comprising the Bouc-Wen model, the semi-active control law, and the shear wall damage criteria and steel damage material model is developed in LS-DYNA program, based on the data transferring between the main program and the control platform; it can realize the purpose of integrated modeling, analysis, and design of the nonlinear semi-active control system. The nonlinear seismic control effectiveness is verified by the numerical example of a 15-story steel-concrete hybrid structure; the results indicate that the control platform and the numerical method are stable and fast, the relative displacement, shear force, and damage of the steel-concrete structure are largely reduced using the optimal designed MR dampers, and the deformations and shear forces of the concrete tube and frame are better consorted by the control devices.
ISSN:1024-123X
1563-5147
DOI:10.1155/2013/401410