Next Article in Journal
Time-Domain Reflectometry (TDR) Monitoring at a Lab Scale of Aerobic Biological Processes in a Soil Contaminated by Diesel Oil
Next Article in Special Issue
Equivalent Frame Model with a Decaying Nonlinear Moment-Curvature of Steel-Reinforced Concrete Joints
Previous Article in Journal
An Accurate Jacobian Matrix with Exact Zoeppritz for Elastic Moduli of Dry Rock
Previous Article in Special Issue
Finite Element Steady-State Vibration Analysis Considering Frequency-Dependent Soil-Pile Interaction
Open AccessArticle

Retrofit Existing Frame Structures to Increase Their Economy and Sustainability in High Seismic Hazard Regions

by Shuang Li 1,2,* and Jintao Zhang 1,2
1
Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China
2
Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(24), 5486; https://doi.org/10.3390/app9245486
Received: 29 October 2019 / Revised: 8 December 2019 / Accepted: 10 December 2019 / Published: 13 December 2019
The study proposes a retrofitting method with an optimum design of viscous dampers in order to improve the structural resistant capacity to earthquakes. The retrofitting method firstly uses a 2D frame model and places the viscous dampers in the structure to satisfy the performance requirements under code-specific design earthquake intensities and then performs an optimum design to increase the structural collapse-resistant capacity. The failure pattern analysis and fragility analysis show that the optimum design leads to better performance than the original frame structure. For regular structures, it is demonstrated that the optimum pattern of viscous damper placement obtained from a 2D frame model can be directly used in the retrofitting of the 3D frame model. The economic loss and repair time analyses are conducted for the retrofitted frame structure under different earthquake intensities, including the frequent earthquake, the occasional earthquake, and the rare earthquake. Although the proposed method is based on time-history analyses, it seems that the computational cost is acceptable because the 2D frame model is adopted to determine the optimum pattern of viscous damper placement; meanwhile, the owner can clearly know the economic benefits of the retrofitting under different earthquake intensities. The retrofitting also causes the frame to have reduced environmental problems (such as carbon emission) compared to the original frame in the repair process after a rare earthquake happens. View Full-Text
Keywords: retrofitting; viscous dampers; optimum design; collapse-resistant capacity; economic benefit; sustainability retrofitting; viscous dampers; optimum design; collapse-resistant capacity; economic benefit; sustainability
Show Figures

Figure 1

MDPI and ACS Style

Li, S.; Zhang, J. Retrofit Existing Frame Structures to Increase Their Economy and Sustainability in High Seismic Hazard Regions. Appl. Sci. 2019, 9, 5486.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop