Numerical investigation of the performance of RC beam-column connection using quench-tempered reinforcement steel bars

Clicks: 2
ID: 285164
2021
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Popular

Ranked #1,264 of 3,757 articles by views in Malay Journal

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 3,757 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
In the Philippines, reinforced concrete buildings using moment frames with infill walls (CHB) is the common practice in RC building design and construction. These structures are customarily reinforced with the ductile micro-alloyed (MA) rebars. However, quenched-tempered (QT) steel have penetrated the Philippine market decades ago, and have replaced the normally used MA steel as reinforcements. Studies have shown that QT steel is more likely to perform less in low cycle fatigue compared to MA steel, in which countries like Taiwan, Japan, United States of America, Canada, and New Zealand were reported to ban or put restrictions to its use. With the QT bar’s penetration into the market and its inevitable continuous use as reinforcements to concrete structures, there is a need to investigate and understand the performance and limitations of QT-reinforced concrete beam-column connections, a key-component in moment frames, to further provide a new set of guidelines, if any, and evaluate if existing codes are sufficient to retain structural integrity, hence, a numerical study is initiated. Simulations results suggest that the behaviour of QT as reinforcements brings minimal increase to the connection’s load capacity by about 19%, but with significant reduction in ductility index ranging from 7% to 69% and about 7 times more severe concrete cover spalling or joint failure. In parametric study, highest MCR shows 35% decrease in the beam’s ultimate load capacity but with 168% increase in ductility index and 96% decrease in the severity of joint failure, highest CAR shows 4% increase in ductility but with a 16% decrease in concrete cracks or failure localized at the joint area, highest BTRR exhibits 57% load capacity increase in the expense of 86% ductility reduction and 8 times more joint damage severity, and the highest LRBDR shows 12% increase in capacity but with decrease in ductility by 21% and 350% increase in concrete joint strain. Furthermore, higher MCR, lower CAR, lower BTRR, and lower LRBDR finite element models acquired concrete joint damages initially at 0.003 mm/mm. Additionally, the inclusion of joint stirrups contributed to the increase the structure’s general strength and toughness: slight increase to the beam load capacity by about 4%, increase in the structure’s ductility index by about 2% to 56%, and considerable decrease in concrete failure at the joint region by about 17% to 87%. It is then found out that the high yield strength of quench-tempered rebars is the primary cause of producing “stronger”
Reference Key
persistent_1760654814_68f175de38e01 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Viloria, Adrian D.
Journal Malay Journal
Year 2021
DOI
DOI not found
URL
https://animorepository.dlsu.edu.ph/etdm_civ/8
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.