Lateral cyclic response sensitivity of rectangular bridge piers confined with UHPFRC tube using fractional factorial design

Li, Shuai; Zhao, Taiyi; Chu, Chih‐Peng; Wang, Jingquan; Alam, M. Shahria; Tong, Teng

doi:10.1016/j.engstruct.2021.111883

Cited by 13 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results illustrated that a monolithic behaviour of strengthened columns can be obtained by using an adequate number of dowels, reducing the jacket thickness and by improving the core surface texture. Another numerical study was carried out by Li et al [97] using 3D finite element models to explore the cyclic response of UHPFRC tube-confined piers. The experimental results were used to validate the finite element models.…”

Section: Study Type Of Structural Member Strengthening and Testing Me...mentioning

confidence: 99%

Ultra-High-Performance Fibre-Reinforced Concrete for Rehabilitation and Strengthening of Concrete Structures: A Suitability Assessment

2023

View full text Add to dashboard Cite

Ultra-high-performance fibre-reinforced concrete (UHPFRC) is a cementitious composite which contains fibres. UHPFRC has emerged as an effective structural retrofitting material due to its superior mechanical properties. In addition, UHPFRC has outstanding durability, ductility and workability; a low permeability; and a high abrasion and fire resistance. These improved characteristics of UHPFRC are obtained by reducing the content of free water in the concrete matrix (leading to less air voids), introducing high strength ductile steel fibres, replacing coarse aggregates with well graded fine aggregates and introducing highly active pozzolanic materials. UHPFRC has excellent bonding with normal strength concrete and it eliminates the issue of debonding which is common in other retrofitting techniques employing fibre-reinforced polymers or externally bonded steel plates. Therefore, considering various aspects, UHPFRC-based structural retrofitting possesses a number of advantages. This paper presents a review of previous studies employing UHPFRC for structural retrofitting applications, highlighting its advantages, limitations and challenges. Aspects of flexural strengthening, combined axial and flexural strengthening, shear strengthening, impact resistance and torsional strengthening are considered for this review. Altogether, the paper aims to enhance the awareness of UHPFRC for structural retrofitting as a step forward towards effective field applications and to outline the potential future directions of research.

show abstract

Section: Study Type Of Structural Member Strengthening and Testing Me...mentioning

confidence: 99%

Ultra-High-Performance Fibre-Reinforced Concrete for Rehabilitation and Strengthening of Concrete Structures: A Suitability Assessment

2023

View full text Add to dashboard Cite

show abstract

“…Fractional factorial analysis (FFA) is effective for quantifying the significance of factors by carrying out a small number of computed cases, which decreases the calculation cost and ensures result accuracy [23]. FFA has been successfully used in experimental designs for detecting response sensitivity [24][25][26].…”

Section: Literature Reviewmentioning

confidence: 99%

A Factorial Ecological-Extended Physical Input-Output Model for Identifying Optimal Urban Solid Waste Path in Fujian Province, China

Liu

Huang

et al. 2021

Sustainability

View full text Add to dashboard Cite

Effective management of an urban solid waste system (USWS) is crucial for balancing the tradeoff between economic development and environment protection. A factorial ecological-extended physical input-output model (FE-PIOM) was developed for identifying an optimal urban solid waste path in an USWS. The FE-PIOM integrates physical input-output model (PIOM), ecological network analysis (ENA), and fractional factorial analysis (FFA) into a general framework. The FE-PIOM can analyze waste production flows and ecological relationships among sectors, quantify key factor interactions on USWS performance, and finally provide a sound waste production control path. The FE-PIOM is applied to managing the USWS of Fujian Province in China. The major findings are: (i) waste is mainly generated from primary manufacturing (PM) and advanced manufacturing (AM), accounting for 30% and 38% of the total amount; (ii) AM is the biggest sector that controls the productions of other sectors (weight is from 35% to 50%); (iii) the USWS is mutualistic, where direct consumption coefficients of AM and PM are key factors that have negative effects on solid waste production intensity; (iv) the commodity consumption of AM and PM from other sectors, as well as economic activities of CON, TRA and OTH, should both decrease by 20%, which would be beneficial to the sustainability of the USWS.

show abstract

“…Although most studies have focused on evaluating the effectiveness of the UHPC jacket-strengthening method through experiments, there is limited research on numerical simulations. Li et al [12] presented a 3D finite element model of an ultra-high performance fiber-reinforced concrete (UHPFRC) tube-confined column and conducted a sensitivity study considering ten material and geometry factors based on nonlinear cyclic analysis results. They proposed a predictive equation to predict the response quantities for other UHPFRC tube-confined columns.…”

Section: Introductionmentioning

confidence: 99%

Fragility-based effectiveness evaluation of reinforced concrete bridge piers strengthened with UHPC jackets

Nguyen,

Phan

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The use of ultra-high-performance concrete (UHPC) jackets as a seismic strengthening method for reinforced concrete structures has become increasingly prevalent. Specifically, these jackets are applied to plastic hinge regions of the structures to improve overall earthquake resistance. This study evaluates the effectiveness of UHPC jackets in strengthening reinforced concrete columns through fragility curves. The columns are modeled numerically, accounting for material nonlinearity, and various strengthening scenarios, including those without UHPC jackets and with UHPC jackets of different heights, are modeled and validated with cyclic loading tests. Subsequently, a case study of a two-column reinforced concrete bridge pier is examined. Time-history dynamics analyses are conducted on 140 ground motion records to develop probabilistic seismic demand models of the column with different strengthening designs. Fragility curves obtained using the cloud method indicate a significant impact of the strengthening method on the failure probability of the column. The research findings presented in this paper provide engineers with a basis for selecting appropriate UHPC jacket parameters, including thickness, height, and material strength in a rational manner.

show abstract

Lateral cyclic response sensitivity of rectangular bridge piers confined with UHPFRC tube using fractional factorial design

Cited by 13 publications

References 38 publications

Ultra-High-Performance Fibre-Reinforced Concrete for Rehabilitation and Strengthening of Concrete Structures: A Suitability Assessment

Ultra-High-Performance Fibre-Reinforced Concrete for Rehabilitation and Strengthening of Concrete Structures: A Suitability Assessment

A Factorial Ecological-Extended Physical Input-Output Model for Identifying Optimal Urban Solid Waste Path in Fujian Province, China

Fragility-based effectiveness evaluation of reinforced concrete bridge piers strengthened with UHPC jackets

Contact Info

Product

Resources

About