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Online since: March 2015
Authors: Pawel Boron, Joanna M. Dulinska, Dorota Jasinska
To guarantee proper nonlinear elasto-plastic behavior of the structure, the material parameters of the steel were determined experimentally.
Additionally, the hall is braced with ϕ12 mm rods which provide longitudinal stability for the building due to the large span of the hall.
The Rayleigh model of mass and stiffness proportional damping was applied.
Also the behavior of some bracings was reported beyond the elastic range.
The behavior of the steel material of the hall was reported beyond the elastic range and plastic effects appeared in some zones of the primary and secondary structural members of the object regardless of the excitation model.
Online since: February 2018
Authors: Luís Macedo, Smail Kechidi, Nouredine Bourahla, José Miguel Castro
In Europe, [4] performed a numerical study to provide suitable value of the behaviour factor (q) for CFS strap-braced stud wall following the FEMA P695 procedure [3].
The behaviour of CFS strap-braced stud wall, which is characterised by pinched hysteretic response, was captured using Pinching4 material model.
It is concluded that a behaviour factor (q) equal to 2.5 for CFS strap braced stud wall is appropriate.
The model is capable of simulating the deteriorating behaviour, strength degradation (both cyclic and in-cycle), stiffness degradation as well as the pinching effect of wood-sheathed CFS-SWP associated with sheathing-to-framing fasteners damage that are critical in sidesway failure mode.
Landolfo, Behaviour factor (q) evaluation the CFS braced structures according to FEMA P695, J.
Online since: November 2011
Authors: Yun Jing Nie, Tie Ying Li
Furthermore, parametric analyses are conducted to examine the effects of lateral stiffness and damping of the seismic isolation bearings on seismic isolation.
Furthermore, parametric analyses are conducted to investigate effects of horizontal stiffness and damping of seismic isolation bearings on seismic responses.
According to mechanical behavior and structural characteristics of beam string structures, a finite element model for a single beam string structure is established by using general explicit dynamic analysis program LS-DYNA, shown in Fig. 3.
Effects of Lateral Stiffness of Seismic Isolation Bearings.
Effects of Damping of Seismic Isolation Bearings.
Online since: December 2010
Authors: Xun Chong, Xian Guo Ye, De Cai Wang, Xing Lian
The effect of the lattice beams between the two precast panels is to enhance connection of the precast panel and the core concrete, increase shear strength of the connecting interface, and ensure that the panels have enough strength and stiffness during construction.
Fig. 2 depicts the loading frame used for conducting the experiments.
(a) Unit 1 (b) Unit 2 (c) Unit 3 (d) Unit4 Fig. 3 Conditions of the units at maximum response Hysteresis Loops Behavior for the Units.
In general, the response was similar to the behavior of the cast- in- place RC walls.
Yield hardening character and Baushinger effect are accounted in this model.
Online since: February 2013
Authors: Heui Yung Chang
This paper considers the effects of corrosion together with those of workmanship [2], assessing the seismic risk for existing buildings with steel moment frames.
At the onset of weld fracture (denoted by Mcr=b5 My), at which point the bottom beam flange and column flange are disconnected, the primary envelope is replaced by a new degraded bilinear representation, with reduced stiffness, capacity (b1My) and modified post-yield slope.
Unloading from the new envelope results in a degraded stiffness until the initial stiffness path on the negative side is reached.
An analysis of variance indicates that b1 and b5 are the most significant parameters affecting frame behavior in the connection model [7, 8].
This case study considers the effect of corrosion together with that of workmanship, assessing the seismic risk for existing buildings with steel moment frames.
Online since: May 2026
Authors: Data Iranata, Cintantya Budi Casita, Budi Suswanto, Aniendhita Rizki Amalia, Masahide Matsumura, Shinya Watanabe, Tchabremane Jean De La Croix Kombate
To accurately reflect nonlinear behavior under such loading, the finite element model accounts for large deformation effects and geometric nonlinearity, enabling the capture of inelastic buckling and yielding responses.
Hysteretic Behavior and Strength Degradation.
The RBSCP configuration exhibits a balanced seismic performance, combining high ductility and stable hysteretic behavior.
Al Farisy, “Comparison of WF & tubular links on the eccentrically brace frame system due to cyclic loads,” Int J Adv Sci Eng Inf Technol, vol. 8, no. 3, pp. 799–804, 2018, doi: 10.18517/ijaseit.8.3.4337
Matsumura, “Determining the Optimal Cutting Geometry of RBS Connection to Enhance Seismic Behavior in Steel Moment Frames,” in Advances in Civil Engineering Materials, E.
Online since: March 2017
Authors: Martin Krejsa, Jiri Protivinsky
Some of the most popular examples are seismic links [3], buckling restraining braces (BRB) [4], dual systems [5] and many others [6, 7, 8 and 9].
The goal of the test has been determination of the scatter of secant stiffness during periodic loading above the yield point.
However, cumulative second order effects, in combination with cumulative plastic wood deformation, have caused a buckling collapse before the completion of measurements.
Popov, Seismic Behaviour of Active Beam Links in Eccentrically Braced Frames.
Iwai, Development of Linked Column Frame System for Seismic Lateral Loads.
Online since: February 2018
Authors: Gregory A. MacRae, Chin Long Lee, Saul Y. Vazquez-Colunga
Effects of Out-of-Plane Displacements on Load Capacity of Gusset Plates in Buckling Restrained Braced Frames Saul Y.
asaul.vazquezcolunga@pg.canterbury.ac.nz, bchin-long.lee@canterbury.ac.nz, cgregory.macrae@canterbury.ac.nz Keywords: gusset plate, buckling restrained brace, buckling restrained braced frame, out-of-plane displacements.
Introduction Gusset plates are commonly used to connect buckling restrained braces (BRBs) to beam-column elements in buckling restrained braced frames (BRBFs).
The contact between these elements was accounted by defining a “hard” contact for the normal behaviour and a friction coefficient of 0.2 for the tangential behavior as used by Fang et al.
MacRae, Out-of-plane buckling behaviour of BRB gusset plate connections, 16WCEE.
Online since: May 2012
Authors: Chong Yang Zhang, Li Sa, Guang Sheng Bian, Na Liu
Table1 Schemes of the Structure Transfer Storey Scheme Number Column Transfer Structure Wall 1 RC Frame Column RC Transfer Girders Shear Wall 2 SRC Frame Column SRC Transfer Girders Shear Wall 3 SRC Frame Column RC Transfer thick slab Shear Wall 4 SRC Frame Column RC Box-type Transfer storey Shear Wall Declaration of Structure Plan Calculation.
The frame-supporting column is made as steel reinforced concrete column to further enhancing the seismic performance.
Increase the cross-section of the frame-supporting column and relocate part of the frame columns in the east and west side with no affect on the use of the building.
Increase the thickness of shear wall in braced frame storey, the basement storey and core tube of the third storey to improve the structure torsion rigidity[2, 3].
Because of reducing the vertical stiffness mutation of the overall structure, the overall mechanical behavior of the box transfer storey structure is greatly improved.
Online since: October 2012
Authors: Wei Ming Xiang, Xiang Zhen Li, Bing Li, Huan Chang Fu
Base Isolated Benchmark Building The benchmark structure is a base-isolated eight-story, steel-braced framed building.
The superstructure is considered to be a linear elastic system with lateral-torsional behavior.
Considering the lateral-torsional behavior, the superstructure and the base are modeled using three master degrees of freedom (DOF) per floor at the center of mass.
(2)By comparing the isolation schemes of this article, the isolation effect of stiffness center position and damping center position of isolation level is proved on benchmark model.
(3) Although this benchmark model has lateral-torsional behavior, but the eccentricity of superstructure is small, and the radius of stiffness is larger, therefore, it makes reverse of the irregular isolation structure on the model becomes restricted, which needs to be broadened and studied.