Strengthening of RC frame subassemblies against progressive collapse using TRM and NSM reinforcement

2020 ◽  
Vol 207 ◽  
pp. 110002 ◽  
Author(s):  
A. de A. Vieira ◽  
S.P. Triantafyllou ◽  
D.A. Bournas
Keyword(s):  
Progressive Collapse ◽  
Rc Frame

Progressive collapse resistance of multistory RC frame strengthened with HPFL-BSP

2021 ◽  
pp. 103123
Author(s):  
Hua Huang ◽  
Min Huang ◽  
Wei Zhang ◽  
Mengxue Guo ◽  
Zhen Chen ◽  
...  
Keyword(s):  
Progressive Collapse ◽  
Rc Frame ◽  
Collapse Resistance

Linear analysis of a two-dimensional multistorey reinforced concrete frame under high temperature at different column locations

2019 ◽  
Vol 10 (3) ◽  
pp. 317-323 ◽  
Author(s):  
Parthasarathi N. ◽  
Satyanarayanan K.S. ◽  
Thamilarau V. ◽  
Prakash M. ◽  
Adithya Punnapu
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
High Temperature ◽  
Lateral Displacement ◽  
Progressive Collapse ◽  
Linear Analysis ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Content Type ◽  
Finite Element Software

Purpose The purpose of this study is to investigate the influence of progressive collapse under high temperature for a reinforced concrete (RC) frame. An analytical programme was analysed for a two-bay five-storey RC frame exposed to high temperature at different column locations. Design/methodology/approach The effects of high temperature protections and locations (i.e. corner, middle and intermediate) on collapse conditions and load distributions were studied for the steady-state linear analysis using finite element software. Findings The results show that the frame will not collapse suddenly at temperatures up to 400°C. This is attributed to an increase in the deflections of the column, which increases the lateral displacement of adjacent heated columns and governs their buckling. This indicates that the temperature rating in the column against collapse can occur at a range of 500°C-600°C compared to that of individual members. The collapse pattern of RC frames designed as ordinary moment resisting frames, and under ordinary load, combinations is based on GSA guidelines. The results for displacement, stress and axial force were collected and discussed. Originality/value The two-bay five-storey frame has been created in finite element software, and linear analysis is used to perform this study with a different temperature.

scholarly journals Rapid Retrofit of Reinforced Concrete Frames after Progressive Collapse to Increase Sustainability

2019 ◽  
Vol 11 (15) ◽  
pp. 4195 ◽  
Author(s):  
Li ◽  
Shan ◽  
Zhang ◽  
Li
Keyword(s):  
Reinforced Concrete ◽  
Failure Modes ◽  
Design Method ◽  
Numerical Models ◽  
Progressive Collapse ◽  
Frame Structure ◽  
Rc Frame ◽  
Concrete Frames ◽  
Before And After ◽  
Test Frame

A structural progressive collapse is usually a local failure, in which the damage is concentrated at beams that bridge the removal column and the column itself. In many cases, retrofitting the damaged structure is more economical and more sustainable than reconstructing the entire structure. A progressive collapse test of a 1/3 scale, four-bay by two-story reinforced concrete (RC) frame was conducted, after which the structure was retrofitted with carbon fiber reinforced polymer (CFRP) wraps and retested. The center column in the first story was removed and the frame was pushed down quasistatically under displacement control to investigate the progressive collapse performances of the retrofitted RC frame. The test results were represented systematically at different areas in terms of the resistance forces, crack developments, and local and global failure modes. Numerical models were built to verify the test frame before and after the retrofitting. A design method was proposed to retrofit an RC frame using CFRP wraps after a progressive collapse. The test frame was redesigned to improve the retrofitting and used as an example to demonstrate the rationality of the proposed retrofit design method. The results indicated that the proposed retrofitting technology rapidly restored the frame structure to its original capacity before the progressive collapse occurred, whilst consistently satisfying the priorities of being economical and sustainable.

Progressive collapse of RC frame structures after a centre column loss

2016 ◽  
Vol 68 (8) ◽  
pp. 423-432 ◽  
Author(s):  
Jian Hou ◽  
Li Song ◽  
Huanhuan Liu
Keyword(s):  
Progressive Collapse ◽  
Frame Structures ◽  
Rc Frame ◽  
Rc Frame Structures

scholarly journals Effect of reinforcing steel debonding on RC frame performance in resisting progressive collapse

HBRC Journal ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 242-254 ◽  
Author(s):  
Waleed Mohamed Elsayed ◽  
Mohamed A.N. Abdel Moaty ◽  
Mohamed E. Issa
Keyword(s):  
Progressive Collapse ◽  
Rc Frame ◽  
Reinforcing Steel

scholarly journals Fast assessment method for progressive collapse of RC frame structures

2019 ◽  
Vol 304 ◽  
pp. 052124
Author(s):  
Bo Zhong ◽  
Ze-Jiang Zhang ◽  
Ya-Qiang Jiang ◽  
Hui Zhu ◽  
Hao Huang
Keyword(s):  
Progressive Collapse ◽  
Assessment Method ◽  
Frame Structures ◽  
Rc Frame ◽  
Rc Frame Structures
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