scholarly journals STUDY ON ELASTO-PLASTIC WIND RESPONSE CHARACTERISTICS AND ITS RESPONSE ANALYSIS METHODS OF TIMBER-FRAMEWORK BUILDING : Study on restoring force characteristics of shear walls in timber-frame-construction for wind performance Part 2

2007 ◽  
Vol 72 (621) ◽  
pp. 119-126 ◽  
Author(s):  
Shoichi SHIMOMURA ◽  
Takeshi OHKUMA
Keyword(s):  
Shear Walls ◽  
Response Analysis ◽  
Restoring Force ◽  
Timber Frame ◽  
Response Characteristics ◽  
Analysis Methods ◽  
Wind Response ◽  
Frame Construction ◽  
Force Characteristics

scholarly journals RESTORING FORCE CHARACTERISTICS MODEL OF CES SHEAR WALLS

2013 ◽  
Vol 78 (693) ◽  
pp. 2027-2034 ◽  
Author(s):  
Suguru SUZUKI ◽  
Hiroshi KURAMOTO ◽  
Tomoya MATSUI
Keyword(s):  
Shear Walls ◽  
Restoring Force ◽  
Force Characteristics

scholarly journals Response Analysis of Damper Assembly with Asymmetric Restoring Force Characteristics

2008 ◽  
Vol 74 (748) ◽  
pp. 2910-2917
Author(s):  
Kazuyuki IIDA ◽  
Akira UOI ◽  
Hiroyuki TOKUNAGA ◽  
Kazuhito MISAJI ◽  
Kouichi SHIBATA
Keyword(s):  
Response Analysis ◽  
Restoring Force ◽  
Force Characteristics

scholarly journals Seismic Strengthening Effects of Full-Size Reinforced Concrete Frame Retrofitted with Novel Concrete-Filled Tube Modular Frame by Pseudo-Dynamic Testing

2021 ◽  
Vol 11 (11) ◽  
pp. 4898
Author(s):  
Jin-Seon Kim ◽  
Ju-Seong Jung ◽  
Dong-Keun Jung ◽  
Eui-Yong Kim ◽  
Kang-Seok Lee
Keyword(s):  
Dynamic Analysis ◽  
Shear Failure ◽  
Dynamic Testing ◽  
Seismic Intensity ◽  
Seismic Retrofitting ◽  
Restoring Force ◽  
Rc Structures ◽  
Linear Dynamic ◽  
Non Linear ◽  
Force Characteristics

The present study proposes a new seismic retrofitting method using a concrete-filled tube modular frame (CFT-MF) system, a novel technique to overcome and improve the limitations of existing seismic strengthening methods. This CFT-MF seismic retrofitting method makes the most of the advantages of both concrete and steel pipes, thereby significantly improving constructability and increasing integration between the existing structure and the reinforcement joints. This method falls into the category of typical seismic retrofitting methods that focus on increasing strength, in which the required amount of seismic reinforcement can be easily estimated. Therefore, the method provides an easy solution to improving the strength of existing reinforced concrete (RC) structures with non-seismic details that are prone to shear failure. In the present study, a full-size two-story test frame modeled from existing domestic RC structures with non-seismic details was subjected to pseudo-dynamic testing. As a result, the effect of the CFT-MF system, when applied to existing RC structures, was examined and verified, especially as to its seismic retrofitting performance, i.e., restoring force characteristics, stiffness reinforcement, and seismic response control. In addition, based on the pseudo-dynamic testing results, a restoring force characteristics model was proposed to implement non-linear dynamic analysis of a structure retrofitted with the CFT-MF system (i.e., the test frame). Finally, based on the proposed restoring force characteristics, non-linear dynamic analysis was conducted, and the results were compared with those obtained by the pseudo-dynamic tests. The results showed that the RC frame (building) with no retrofitting measures applied underwent shear failure at a seismic intensity of 200 cm/s2, the threshold applied in seismic design in Korea. In contrast, in the frame (building) retrofitted with the CFT-MF system, only minor earthquake damage was observed, and even when the maximum seismic intensity (300 cm/s2) that may occur in Korean was applied, small-scale damage was observed. These results confirmed the validity of the seismic retrofitting method based on the CFT-MF system developed in the present study. The non-linear dynamic analysis and the pseudo-dynamic test showed similar results, with an average deviation of 10% or less in seismic response load and displacement.

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