scholarly journals Seismic Design and Performance Assessment of Frame Buildings Reinforced by Dual-Phase Steel

2021 ◽  
Vol 11 (11) ◽  
pp. 4998
Author(s):  
Jure Žižmond ◽  
Matjaž Dolšek
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Concrete Structures ◽  
Eurocode 8 ◽  
Dual Phase ◽  
Reinforcing Steel ◽  
Reinforced Concrete Frame ◽  
Earthquake Resistant ◽  
Frame Buildings ◽  
Design Earthquake

To improve the durability and serviceability of reinforced concrete structures, different variants of dual-phase reinforcing steel were developed within the research project NEWREBAR. The investigated variant of the new material, termed DPD2 steel, has a specific microstructure that increases the corrosion resistance, but its yielding strength is less than that of Tempcore steel B500B. DPD2 steel has no yielding plateau, which is characteristic of conventional reinforcing steel. Thus, it was investigated whether the current building codes can be used to design earthquake-resistant concrete structures reinforced by DPD2 steel bars. For this reason, three multi-story reinforced concrete frame buildings were designed according to Eurocode by considering DPD2 steel and, for comparison reasons, Tempcore steel B500B. Based on the nonlinear model, which was validated by cyclic test of columns, the seismic performance of DPD2 buildings was found to be improved compared to those designed with conventional B500B reinforcing steel. This can mainly be attributed to the substantial strain hardening of the DPD2 steel, which increases the overstrength factor of the structure by about 10%. However, for the improved seismic performance, the amount of steel in DPD2 buildings had to be increased in the design by approximately 20–25% due to the smaller yield strength of DPD2 steel. Nevertheless, it was demonstrated that Eurocode 8 could be used to design earthquake-resistant frame building reinforced with dual-phase reinforcing steel DPD2.

Seismic Performance of Reinforced Concrete Frame Buildings Equipped with Friction Dampers

2018 ◽  
Author(s):  
Ali Naghshineh ◽  
Amina Kassem ◽  
Anne-Gaelle Pilorge ◽  
Oscar Romero Galindo ◽  
Ashutosh Bagchi
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Reinforced Concrete Frame ◽  
Friction Dampers ◽  
Concrete Frame ◽  
Frame Buildings

Based on ANSYS Buckling-Restrained Brace Frame Structure Shock Absorption Analysis

2013 ◽  
Vol 477-478 ◽  
pp. 651-654
Author(s):  
Li Jun He ◽  
Yong Yao ◽  
Yun Peng Chu
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Structural Damage ◽  
Structural Response ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Story Drift ◽  
Design Earthquake ◽  
Rare Earthquake

Whether the design of new structure or reinforcement of the existing projects, structure earthquakereduction design is always the focus of research at home and abroad. The buckling restrained braces won the unanimous endorsement of the engineering sector with good energy dissipation capacity and simpleeasy construction process. This Paper based on the ANSYS analysis the structural response through simulated the bucklingrestrained brace frame structure and the general reinforced concrete frame on effect of the rare earthquake or design earthquake, and analysis the bucklingrestrained braces on the seismic performance of reinforced concrete frame structure. The analysis results show that the seismic performance of reinforced concrete frame with bucklingrestrained braces well, it can effectively reduce the maximum story drift and control structural damage. Therefore, Bucklingrestrained Brace should be used extensively to reinforced concrete framework .

scholarly journals Assessment of seismic performance characteristics of reinforced concrete buildings constructed between 1936 and 1975

1984 ◽  
Vol 17 (3) ◽  
pp. 163-184
Author(s):  
D. R. Brunsdon ◽  
M. J. N. Priestley
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Performance Characteristics ◽  
Reinforced Concrete Buildings ◽  
Reinforced Concrete Frame ◽  
Concrete Buildings ◽  
Concrete Frame ◽  
Inelastic Analysis ◽  
Frame Buildings ◽  
Adverse Influence

This paper describes the results of an investigation into the expected seismic performance of reinforced concrete buildings constructed between 1936 and 1975. Typical design and construction features of these buildings are reviewed, including a chronological comparison of post-1935 seismic design levels. Two reinforced concrete frame buildings constructed in the 1950s were the subject of inelastic analysis, and it is found that member shear and poor joint performance tended to govern the ultimate response. An analysis procedure for evaluating the seismic performance characteristics of reinforced concrete frame elements is proposed. Case studies illustrate this method, one of which highlights the adverse influence of highly eccentric building layout.

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