Seismic retroftting of RC columns with RC jackets and wing walls with different structural details

Chang, Shuenn‐Yih; Chen, Ting-Wei; Tran, Ngoc-Cuong; Liao, Wei-Hsin

doi:10.1007/s11803-014-0230-4

Cited by 45 publications

(9 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concrete-jacketed columns dissipate much more energy than the old columns in general. This is because the concrete jacketing method can improve strength and stiffness by enlarging the cross-section [ 27 , 28 ]. As shown in Figure 13 , the hybrid concrete jacketing method improved the energy dissipation capacity of the old column.…”

Section: Resultsmentioning

confidence: 99%

An Experimental Study on Torsional Behavior of Reinforced Concrete Columns Retrofitted with Hybrid Concrete Jackets

Kim

Lee

2023

Materials

View full text Add to dashboard Cite

The concrete jacketing method for retrofitting old reinforced concrete (RC) columns should secure confinement and seismic performance under torsion as well as unidirectional later loads. In a previous study, a hybrid concrete jacketing method was proposed using steel wire mesh (SWM), steel grid reinforcement (SGR), which can replace reinforcement of existing concrete jacketing method, and using steel fiber non-shrinkage mortar (SFNM). These details can simplify the retrofitting process of the existing concrete jacketing method, and seismic performance was evaluated by conducting a cyclic loading test under unidirectional loading. In this paper, the torsional behavior of RC columns retrofitted with the hybrid concrete jacketing method was investigated. Four specimens were fabricated and conducted cyclic loading tests under two types of loading schemes, unidirectional and bidirectional loading, to examine the effect of the loading path. The strength and energy dissipation capacity of retrofitted columns with hybrid concrete jackets increased approximately eight times compared to the old RC columns under torsional loading. Therefore, the hybrid concrete jacketing method can improve torsional resistance.

show abstract

Section: Resultsmentioning

confidence: 99%

An Experimental Study on Torsional Behavior of Reinforced Concrete Columns Retrofitted with Hybrid Concrete Jackets

Kim

Lee

2023

Materials

View full text Add to dashboard Cite

show abstract

“…In another study, Chang et al [5] compared the performance of RC jacketing and wing wall (small concrete panels installed at both sides of the column) installation and found that RC jacketing results in a larger enhancement of energy dissipation and ductility of the deficient RC columns.…”

Section: Reinforced Concrete/mortar Jacketingmentioning

confidence: 99%

Strengthening and Repair of Reinforced Concrete Columns by Jacketing: State-of-the-Art Review

et al. 2019

View full text Add to dashboard Cite

Sustainability necessitates the protection of infrastructure from any kind of deterioration over the life cycle of the asset. Deterioration in the capacity of reinforced concrete (RC) infrastructure (e.g., bridges, buildings, etc.) may result from localised damage sustained during extreme loading scenarios, such as earthquakes, hurricanes or tsunamis. In addition, factors such as the corrosion of rebars or ageing may also deteriorate or degrade the capacity of an RC column, thereby necessitating immediate strengthening to either extend or ensure its design life is not limited. The aim of this paper is to provide a state-of-the-art review of various strengthening and repair methods for RC columns proposed by different researchers in the last two decades. The scope of this review paper is limited to jacketing techniques for strengthening and/or repairing both normal- and high-strength RC columns. The paper also identifies potential research gaps and outlines the future direction of research into the strengthening and repair of RC columns.

show abstract

“…A statistical study conducted to investigate methods used for strengthening 114 concrete structures damaged by an earthquake in 1985 revealed that RC-Jacketing was widely used as the strengthening method (31) . Looking at RC jacketing's structural characteristics, this method can enhance both strength and ductility with stiffness (32) . In addition to increasing the target member's strength and ductility, it uniformly improves the structure's overall behavior.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on retrofitting concrete column by FRP-Wrapping and RC-Jacketing methods: A feasibility study for Afghanistan

Mumtaz¹,

Nasiri²,

Shimozato³

2021

IJST

View full text Add to dashboard Cite

Background/Objectives: FRP (Fiber Reinforced Polymer) has a wide range of application areas within the construction industry and is used in various forms and shapes, primarily for maintenance purposes. Using FRP has numerous advantages and disadvantages driven by several factors, including the country where it is used. The present paper focuses on the feasibility of using FRP in Afghanistan, considering load carrying capacity, cost, time efficiency, and environmental concerns as the main parameters. Method: In this numerical study, RC-jacketing and FRP-wrapping methods were evaluated for strengthening/repairing RC columns, and a comparison of the two methods was carried out to understand which approach better meets the maintenance needs in Afghanistan. Findings: As a result, the RC-jacketing method was more efficient in terms of cost and strength, while the FRPwrapping method proved its efficiency in terms of time and lower emission of CO 2. Moreover, the RC-jacketing method was found to be more suitable and aligned with the country's current architecture. Overall, as the cost is the leading parameter in a developing country like Afghanistan, RC-jacketing was more suitable for conducting the maintenance work. Additionally, the authors also recommended using the FRP-wrapping method in some particular circumstances where the RC-jacketing method was believed to be less efficient.

show abstract

Seismic retroftting of RC columns with RC jackets and wing walls with different structural details

Cited by 45 publications

References 2 publications

An Experimental Study on Torsional Behavior of Reinforced Concrete Columns Retrofitted with Hybrid Concrete Jackets

An Experimental Study on Torsional Behavior of Reinforced Concrete Columns Retrofitted with Hybrid Concrete Jackets

Strengthening and Repair of Reinforced Concrete Columns by Jacketing: State-of-the-Art Review

A comparative study on retrofitting concrete column by FRP-Wrapping and RC-Jacketing methods: A feasibility study for Afghanistan

Contact Info

Product

Resources

About