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Landolfo, Seismic Behaviour of Sheathed CFS Buildings: Shake Table Tests and Numerical Modelling, Ing.
Landolfo, Development and Calibration of Hysteretic Model for CFS Strap braced stud walls, Int.
Landolfo, Numerical modelling of CFS two-storey sheathing-braced building under shaking-table excitations, J.
Landolfo, Seismic Behaviour of Sheathed CFS Buildings: Shake-Table Testing and Numerical Modelling, Key Eng.
Rebelo, Seismic behaviour of gravity load designed flush end-plate joints.

Chinese seismic code recommends ‘Strong Column and Weak Beam’ yield behavior and puts forward design methodology of Column-ends-bending-moment Overdesign Factor (COF).
Reinforced concrete twin-frame structure is initiated to take effect as the second seismic fortification line for the frame structure, considering column-plastic-hinge multiple yield mode as projected yield behavior and taking the design goal of resisting appearance of progressive storey collapse.
Outer limb-columns having well ductility will play the role of ‘buckling-restrained brace’ when inner limb-columns yield, and provide elastic restoring force for yielding weak layer which would has the effect of ‘isolation layer’.
Therefore twin-frame structure has well seismic behavior to avoid the progressive storey collapse
Then seismic effect reduces accordingly when the injured stiff elements degraded structural stiffness.

The inelastic behavior of steel SCBF beams and columns is modeled with a lumped-plasticity deterioration model [25, 26].
Lehman, Seismic performance assessment of concentrically braced steel frames.
Reserve capacity and implications for seismic collapse prevention for low-ductility braced frames in moderate seismic regions.
Nakashima, Effect of gravity columns on mitigation of drift concentration for braced frames.
Lignos, Effect of modeling assumptions on the earthquake-induced losses and collapse risk of steel-frame buildings with special concentrically braced frames.

The seismic collapse resistance of the frame was strengthened by attached substructures, including conventional brace, buckling restrained brace (BRB) and viscous damper.
However, the ductility of the frame decreases with an increase in the brace number because the brace will bring additional axial force to the column.
This is the negative effect of the brace strengthening on the seismic resistance.
On the other hand, the axial force of the columns will be increased, which is a negative effect.
Modeling the inelastic cyclic behaviour of a bracing member for work-hardening material [J].

It is subjected to large forces during an earthquake, due to ground shaking and the response of the building depends on the behavior of the beam-column joint.
Seismic behavior of steel frame structures with viscous damper was studied by Chang.et.al., [3].
He studied the seismic performance of steel moment resisting frames retrofitted with different bracing systems and found that mega bracing system was more economical.
“Bracing Frames For Seismic Retrofit Of Steel Frames”, Thirteenth World Conference on Earthquae Engneering, Paper No.3351
“Seismic analysis of steel braced reinforced concrete frames”, Internatonal Journal Of Civil And Structural Engineering, Vol.1 No 1

3) What is the hysteretic behavior of a frame with AFC or SFC connection braces?
Hysteretic behavior of the frame equipped with an AFC brace [13] Like the AFC braced frame, the hysteresis loops of the SFC braced frame were also stable with almost rectangular (Fig. 11).
Hysteretic behavior of the frame equipped with an SFC brace By using Bisalloy 500 shims and tensioning the bolts up to their proof load, the hysteretic behaviour of both the AFC braced frame and the SFC braced frame was found to be stable with insignificant peak sliding force degradation after 21 cycles of quasi-static testing.
Tremblay, Seismic Behaviour and Design of Friction Concentrically Braced Frames for Steel Buildings, Unpublished PhD Thesis, Department of Civil and Environmental Engineering.
Munoz, Design Considerations for Braced Frames with Asymmetrical Friction Connections (AFC), Proc. of the International Conference STESSA 2012 “Behaviour of Steel Structures in Seismic Areas”, Santiago de Chile, 2012

The comparative analysis of structure with or without friction damped braces is conducted, and the results show that energy dissipation system is very effective and the working behavior of structure is stable.
Secondary appraisal to seismic calculation is given priority to structure effect on comprehensive evaluation.
(3) Seismic bearing capacity checking computations The building frame beam and column flexural bearing capacity part does not meet the requirements, axial compression ratio, frame column, beam bending bearing capacity of both meet the requirements.
Need to increase section, increase stiffness, and in so doing it would cause of earthquake action to increase, and cause building use area is reduced, material consumption increase in adverse effect.
(In Chinese) [4] Xu Weibin: Application Study in Engineering of RC Friction Energy Dissipation Braced Frame-Tube Structure (Kunming University of Science and Technology, China 2008).

The concentric braced frame specimen used in this experiment is shown in Fig. 2, representing a single bay of a typical midrise moment frame in Japan.
Schematic of Testing Set-up Simulating Seismic Response of Braced Frame Fig. 2.
A concentric braced frame specimen (CHS with D/t=42) with a dual moment frame was subjected to multiple inputs of the El Centro NS record (2x100% and 3x150%).
Takeuchi., Effect of brace fracture on seismic performance of braced frame.
Wakabayashi., Mathematical expression of hysteric behavior of braces.

Using SAP2000, the seismic behavior of a historic building was analyzed.
And the seismic behaviors of the building before and after strengthening were compared.
Fig. 2 shows the redistribution of inner forces caused by the stiffness change of the middle column after strengthening in a single-storey two-span frame structure under horizontal load.
Hinged spatial frame model for the building (Fig. 6) was established by using SAP2000, with which the seismic behavior of the structure can be analyzed.
Figure 6: Hinged spatial frame model for the building of Bund 18 Seismic Behavior of the Structure before Strengthening Under the guideline of the Chinese code, the seismic behavior of the building was calculated.

Introduction Eccentrically braced frames (EBFs) are characterized by a favorable combination of high ductility, stiffness and strength and represent one of the most effective traditional steel framing system to resist seismic load.
Under this assumption, all the beams would have satisfactory behaviour as the excess bending moment would be transferred to the brace via moment-resistant connexion.
Redwood, Design and seismic response of shear critical eccentrically braced frames.
Harris III, Collapse prevention seismic performance assessment of new eccentrically braced frames using ASCE 41.
Tremblay, Seismic Performance of low-to-moderate height eccentrically braced steel frames designed for north american seismic conditions.