Seismic performances and behavior factor of post-and-beam timber buildings braced with nailed shear walls

2015 ◽  
Vol 100 ◽  
pp. 674-685 ◽  
Author(s):  
Natalino Gattesco ◽  
Ingrid Boem
Keyword(s):  
Shear Walls ◽  
Behavior Factor ◽  
And Behavior

scholarly journals Geometric Parameters and Behavior Factor of Knee-Braced Steel Frames Using Nonlinear Static Pushover (NSP) Analyses

2016 ◽  
Vol 10 (11) ◽  
pp. 110
Author(s):  
Majid Anoushehei ◽  
Farhad Daneshjoo
Keyword(s):  
Steel Frames ◽  
Resistance Coefficient ◽  
Reduction Factor ◽  
Geometric Parameters ◽  
Braced Frame ◽  
Behavior Factor ◽  
Seismic Force ◽  
Force Reduction Factor ◽  
Nonlinear Static ◽  
And Behavior

During the recent years, the new knee-braced frame (KBF) system has been interested to achieve a proper seismic behavior. Briefly introducing KBF, the present study evaluates the geometric parameters and behavior factor of multi-story knee-braced steel frames. The studied models include three-, five- and eight-story steel CBFs, EBFs and KBFs. Using linear static analyses, the present study evaluates lateral stiffness of knee-braced frames and plots their co-stiffness curves. Using co-stiffness curves, then, the best range is determined for geometric parameters of KBFs to achieve the proper stiffness. In addition, ductility-related seismic force reduction factor (Rμ), incremental resistance coefficient (RS), and behavior factor (R) are calculated for the frames using incremental nonlinear static analyses, and compared with the corresponding concentric and eccentric frames.

Responses of a 58-Story RC Dual Core Shear Wall and Outrigger Frame Building Inferred from Two Earthquakes

2016 ◽  
Vol 32 (4) ◽  
pp. 2449-2471 ◽  
Author(s):  
Mehmet Çelebi
Keyword(s):  
Shear Walls ◽  
Shear Wall ◽  
Mode Shapes ◽  
Fundamental Frequencies ◽  
Frame Building ◽  
Local Site ◽  
Time Histories ◽  
And Behavior ◽  
Story Building ◽  
Dual Core

Responses of a dual core shear-wall and outrigger-framed 58-story building recorded during the Mw6.0 Napa earthquake of 24 August 2014 and the Mw3.8 Berkeley earthquake of 20 October 2011 are used to identify its dynamic characteristics and behavior. Fundamental frequencies are 0.28 Hz (NS), 0.25 Hz (EW), and 0.43 Hz (torsional). Rigid body motions due to rocking are not significant. Average drift ratios are small. Outrigger frames do not affect average drift ratios or mode shapes. Local site effects do not affect the response; however, response associated with deeper structure may be substantial. A beating effect is observed from data of both earthquakes but beating periods are not consistent. Low critical damping ratios may have contributed to the beating effect. Torsion is relatively larger above outriggers as indicated by the time-histories of motions at the roof, possibly due to the discontinuity of the stiffer shear walls above level 47.

Behavior factor evaluation of CFS wood sheathed shear walls according to FEMA P695 for Eurocodes

2020 ◽  
Vol 221 ◽  
pp. 111042
Author(s):  
Sarmad Shakeel ◽  
Luigi Fiorino ◽  
Raffaele Landolfo
Keyword(s):  
Shear Walls ◽  
Behavior Factor ◽  
Factor Evaluation

scholarly journals Nonlinear Behaviour of Vertically Irregular Structures using Shearwall

2019 ◽  
Vol 8 (12) ◽  
pp. 776-780
Keyword(s):  
Aspect Ratio ◽  
Shear Walls ◽  
Failure Criteria ◽  
Single Step ◽  
Nonlinear Behaviour ◽  
Irregular Structure ◽  
Irregular Structures ◽  
First Case ◽  
G 11 ◽  
And Behavior

The objective of the present study is to compare the performance of G+11 multi-storied building. For this purpose five different models of regular, single step vertically irregular, dual step vertically irregular building with and without shear walls are considered. Two different cases of aspect ratio in the geometric irregular frames are considered. In the first case, single step vertically irregular structure with and without shearwall at an aspect ratio(A/L) of 0.28 after third storey in x and y-direction. In second case, dual step vertically irregular structure with and without shearwall at an aspect ratio(A/L) of 0.57 after sixth storey in x and y-direction. In addition to that, the study includes the failure criteria in formation of hinges and behavior of formation of hinges in different structures strengthened with shearwall. In this study Nonlinear static pushover analyses are conducted to study and analyze the structure. The buildings are modeled using ETABS 2017 software and seismic loads are calculated as per IS: 1893-2002(Part-1)

Sign in / Sign up

Export Citation Format

Share Document