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Online since: November 2016
Authors: Praveen Nagarajan, A.S. Sajith, Ann Peter Minu
Shear wall core, braced frame, outrigger structures constitute the interior system and framed tube, braced tube, diagrid constitute the exterior system.
It was observed that all diagrid buildings with different configurations experience less shear lag effect than framed tube building due to higher lateral stiffness.
The behaviour of intersecting connections of CFST diagrids was studied by Li et al [9].
The structural characteristics and seismic behaviour of the diagrid structural frame was demonstrated with a 21 storey diagrid building frame subjected to nonlinear static and dynamic analyses.
In the case of twisted and tapered tall buildings, the lateral stiffness of the diagrid structures was found to be more compared to braced tube and outrigger structures.
It was observed that all diagrid buildings with different configurations experience less shear lag effect than framed tube building due to higher lateral stiffness.
The behaviour of intersecting connections of CFST diagrids was studied by Li et al [9].
The structural characteristics and seismic behaviour of the diagrid structural frame was demonstrated with a 21 storey diagrid building frame subjected to nonlinear static and dynamic analyses.
In the case of twisted and tapered tall buildings, the lateral stiffness of the diagrid structures was found to be more compared to braced tube and outrigger structures.
Online since: May 2011
Authors: Peng Bo Zhang, Yu Ping Sun, Shi Chun Zhao
In Japan, Kasai et al. [8, 9 and 10] have conducted analytical researches on the seismic behavior of building structures with the elasto-plastic dampers and developed a simplified method that can be used to evaluate the seismic response of the damped structures, and to conduct reasonable design of a building enhanced with the elasto-plastic dampers, which includes the FD.
The lateral stiffness of the steel column and the installed VRFD or FD at each storey are expressed in form of inelastic springs.
The above are the concluding remarks about the mitigation effect of the VRFD on the seismic responses of steel frames.
Marsh: Response of friction damped braced frames.
Cherry: Performance evaluation of friction damped braced steel frames under simulated earthquake loads, Earthquake Spectra,Vol.3(1)(1987), p.57-78 [3] C.E.
The lateral stiffness of the steel column and the installed VRFD or FD at each storey are expressed in form of inelastic springs.
The above are the concluding remarks about the mitigation effect of the VRFD on the seismic responses of steel frames.
Marsh: Response of friction damped braced frames.
Cherry: Performance evaluation of friction damped braced steel frames under simulated earthquake loads, Earthquake Spectra,Vol.3(1)(1987), p.57-78 [3] C.E.
Online since: March 2012
Authors: Peng Wang
Basal shear comparison
Seismic wave acceleration response spectrum
The support basic information and arrangement buckling position
In SAP2000 software using Bocu-Wen model to simulate the buckling of hysteresis behavior support, this paper choose 25 t prevent buckling support arrangement between layers in structure by a large displacement, take elastic stiffness K = 50 t/mm.
In view of the artificial wave incentive structure under reaction is the largest, here to artificially wave as an example, this paper analyzes the frame structure, pure support-the frame structure, prevent buckling support-frame structure of the rarely met earthquake in the seismic response of the seismic behavior of the different structure performance listed.
From the beams and columns of moment-rotation relationship curves, and pure frame structure and support-compared to the frame structure, the support frame structure of buckling-component to reduce energy consumption significantly, component moment-rotation relationship curve that contrast, prevent buckling support the role play energy consumption, and the effect is obviously superior to support.
State of the art of buckling-restrained braces in Asia.
Double steel tube type QuShu amid the system can support away the seismic behavior and application research.
In view of the artificial wave incentive structure under reaction is the largest, here to artificially wave as an example, this paper analyzes the frame structure, pure support-the frame structure, prevent buckling support-frame structure of the rarely met earthquake in the seismic response of the seismic behavior of the different structure performance listed.
From the beams and columns of moment-rotation relationship curves, and pure frame structure and support-compared to the frame structure, the support frame structure of buckling-component to reduce energy consumption significantly, component moment-rotation relationship curve that contrast, prevent buckling support the role play energy consumption, and the effect is obviously superior to support.
State of the art of buckling-restrained braces in Asia.
Double steel tube type QuShu amid the system can support away the seismic behavior and application research.
Online since: January 2012
Authors: Qing Sheng Guo, Qing Shan Yang
Based on two different 3D models considering or ignoring the stiffness of infilled walls (SIW), a numerical investigation is presented on the structural behaviors of the SST system utilizing the finite element 3D simulation analysis soft ware ETABS.
The truss-column frame plane cooperative model was proposed foremost by R P Gupta.
Conclusions The investgation shows that the SST system is different with the other normal structure system: steel frame and steel frame-shear wall system, the stiffness of the SST system along the Y direction is much more stronger than the X direction, the effect of the SIW make the SST system’s dynamical behaviors changed observably.
The behavior of SST system ignoring the SIW shows shear deformation similar to steel frame structure.
After considering the SIW, the behavior is between the shear deformation and flexural deformation.
The truss-column frame plane cooperative model was proposed foremost by R P Gupta.
Conclusions The investgation shows that the SST system is different with the other normal structure system: steel frame and steel frame-shear wall system, the stiffness of the SST system along the Y direction is much more stronger than the X direction, the effect of the SIW make the SST system’s dynamical behaviors changed observably.
The behavior of SST system ignoring the SIW shows shear deformation similar to steel frame structure.
After considering the SIW, the behavior is between the shear deformation and flexural deformation.
Online since: September 2024
Authors: Geffren R. Bernardo, Rey Albert C. Cabotaje
Pushover curve was drawn from SAP 2000 for two actions of plastic hinge behavior, deformation-controlled and force-controlled actions.
Whereas in columns axial load effect is considered.
The structure frame influenced seismic load distribution, concentrating large stresses on columns and beams.
· Comparison of Code-based and Performance-based Methods: Assuming elastic behavior, code-based methods should not be directly compared to Performance-Based Design (PBD), which considers inelastic behavior.
Harris, “Collapse Prevention seismic performance assessment of new eccentrically braced frames using ASCE 41,” Engineering Structures, 23-Mar-2016.
Whereas in columns axial load effect is considered.
The structure frame influenced seismic load distribution, concentrating large stresses on columns and beams.
· Comparison of Code-based and Performance-based Methods: Assuming elastic behavior, code-based methods should not be directly compared to Performance-Based Design (PBD), which considers inelastic behavior.
Harris, “Collapse Prevention seismic performance assessment of new eccentrically braced frames using ASCE 41,” Engineering Structures, 23-Mar-2016.
Online since: May 2011
Authors: Shi Mei Liu, Dong Sheng Huang
When the moment of inertia of beam is much smaller than that of column (strong column - weak beam frame), the existence of filling wall can greatly increase the lateral stiffness of frame structure.
When the moment of inertia of beam is much bigger than that of column (strong beam - weak column frame), the curve line falls gently, increasing the moment of inertia ratio of beams has little effect on decreasing the relative stiffness of model.
The opening rate of wall has obvious reduction effect on the stiffness of filling frame, and for the same opening rate, when the position of openings are different, the stiffness reduction effect of filling frame is also different.
[3] Long Shenjiu: Research on Behaviour of Infilled Freams Structures by Considering of Interaction Nanjing University of Aeronautics and Astronautics The Graduate school(2010), p.29-37
[5] Mohammad Aliaari and Ali M.Memari: Analysis of Masonry Infilled Stell Frames with Seismic Isolaro Subframes [J].Engineering Structures, 2006,27:485-500.
When the moment of inertia of beam is much bigger than that of column (strong beam - weak column frame), the curve line falls gently, increasing the moment of inertia ratio of beams has little effect on decreasing the relative stiffness of model.
The opening rate of wall has obvious reduction effect on the stiffness of filling frame, and for the same opening rate, when the position of openings are different, the stiffness reduction effect of filling frame is also different.
[3] Long Shenjiu: Research on Behaviour of Infilled Freams Structures by Considering of Interaction Nanjing University of Aeronautics and Astronautics The Graduate school(2010), p.29-37
[5] Mohammad Aliaari and Ali M.Memari: Analysis of Masonry Infilled Stell Frames with Seismic Isolaro Subframes [J].Engineering Structures, 2006,27:485-500.
Online since: February 2018
Authors: Jorge M. Proença, João F.A. Sio, Luís Calado
The seismic behavior of moment resistant frames with welded FUSEIS beam splices (termed as MRF-WFBS hereafter) is very similar compared to conventional MRFs.
Lateral forces due to a 0.30g earthquake (soil type C) are resisted by the MRF-WFBS in the Y direction and by concentrically braced frames (CBF) in the X direction (Figure 5).
Georgiev, Study on seismic behavior of concentrically braced frames.
Espinha, Hysteretic behavior of dissipative welded devices for earthquake resistant steel frames.
Castiglioni, Hysteretic behavior of dissipative bolted fuses for earthquake resistant steel frames.
Lateral forces due to a 0.30g earthquake (soil type C) are resisted by the MRF-WFBS in the Y direction and by concentrically braced frames (CBF) in the X direction (Figure 5).
Georgiev, Study on seismic behavior of concentrically braced frames.
Espinha, Hysteretic behavior of dissipative welded devices for earthquake resistant steel frames.
Castiglioni, Hysteretic behavior of dissipative bolted fuses for earthquake resistant steel frames.
Online since: May 2011
Authors: Yong Yao, Yue Chen, Yong Jun Deng, Dai Guo Chen, Bin Xu
The Seismic Behavior Analysis of the Light-duty
Steel Structure Residence System
Bin Xu, Yong Yao, Yongjun Deng,Yue Chen,Daiguo Chen
School of Civil Engineering and Architecture of Southwest University of Science and Technology, Mianyang 621010
xubinlongfei@163.com
Keywords: The Light-duty Steel Structure, Seismic behavior, Story drift angle, Base shear, Natural vibration period
Abstract.
If the structure can widespread use in areas of China, especially in earthquake-prone zone or strong seismic area, the analysis of seismic resistance behavior to this structure appears essential especially.
The paper analysis seismic resistance behavior of a apartment building project using finite element method.
The seismic behavior analysis of different seismic conditions In order to know the earthquake resistant behaviors of this structure system under different earthquakes grouping, site category and seismic intensity, ETABS has been adopted to analyses it in this article.
Consequently, in order to increase its lateral stiffness lateral bracing should be arranged.
If the structure can widespread use in areas of China, especially in earthquake-prone zone or strong seismic area, the analysis of seismic resistance behavior to this structure appears essential especially.
The paper analysis seismic resistance behavior of a apartment building project using finite element method.
The seismic behavior analysis of different seismic conditions In order to know the earthquake resistant behaviors of this structure system under different earthquakes grouping, site category and seismic intensity, ETABS has been adopted to analyses it in this article.
Consequently, in order to increase its lateral stiffness lateral bracing should be arranged.
Online since: August 2019
Authors: C.L. Mahesh Kumar, K.G. Shwetha, S. Neelavathi
Literature Review
Ying Zhou and Xilin Lu [7], here author has made a study on seismic behavior of a tall building with 2 large openings (20m x 20m) in elevation.
Studies based on seismic behavior of tall irregular structure along with their findings are presented.
The structural systems are made of MRF with or without bracing frame and shear walls.
Due to inclined columns the structural behavior is different manner.
References [1] Bardia Khafaf, Rasoul Mirghaderi, Behavior of torsional effects of asymmetric pyramid shape high rise building in seismic zone, Structures Congress 2008, ASCE, (2008)
Studies based on seismic behavior of tall irregular structure along with their findings are presented.
The structural systems are made of MRF with or without bracing frame and shear walls.
Due to inclined columns the structural behavior is different manner.
References [1] Bardia Khafaf, Rasoul Mirghaderi, Behavior of torsional effects of asymmetric pyramid shape high rise building in seismic zone, Structures Congress 2008, ASCE, (2008)
Online since: February 2022
Authors: Razie Ansari Targhi, Marzie Ansary Targhi, Mark Grigorian, Abdolreza Sarvghad Moghadam
MD compares and analyses current and projected states of response for changing natural conditions, such as earthquakes, controls seismic behavior, modification and replacement of existing parts, optimizes shapes, sizes and energy dissipation as planned.
It is predicted that both eccentrically braced frames (EBFs) and RRCs may be utilized as hybrid, self-centering, self-locking, rocking cores with or without active/passive controls.
The left and right-hand columns of the imaginary frames of Figure 8.
The difference between resistive and MD is in their approach to expected behavior during and after major earthquakes.
Seismic design of steel column-tree moment-resisting frames: Structural Steel Educational Council
It is predicted that both eccentrically braced frames (EBFs) and RRCs may be utilized as hybrid, self-centering, self-locking, rocking cores with or without active/passive controls.
The left and right-hand columns of the imaginary frames of Figure 8.
The difference between resistive and MD is in their approach to expected behavior during and after major earthquakes.
Seismic design of steel column-tree moment-resisting frames: Structural Steel Educational Council