Self-Stressed Steel Fiber Reinforced Concrete as Negative Moment Connection for Strengthening of Multi-Span Simply-Supported Girder Bridges

Wang, Wen Wei; Dai, Jian‐Guo

doi:10.1260/1369-4332.16.6.1113

Cited by 14 publications

(4 citation statements)

References 24 publications

(45 reference statements)

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“…The Hongnestad model was used as the constitutive model for concrete matrix. The effect of concrete in the tensile region was neglected [27][28][29].…”

Section: Failure Load Of Textile Reinforced Self-stressing Concrete Smentioning

confidence: 99%

Expansive and mechanical properties of textile reinforced self-stressing concrete

Wang

Man

Jin

2015

Construction and Building Materials

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“…The Hongnestad model was used as the constitutive model for concrete matrix. The effect of concrete in the tensile region was neglected [27][28][29].…”

Section: Failure Load Of Textile Reinforced Self-stressing Concrete Smentioning

confidence: 99%

Expansive and mechanical properties of textile reinforced self-stressing concrete

Wang

Man

Jin

2015

Construction and Building Materials

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“…For decades, fiber-reinforced polymer (FRP) bars have been gradually used extensively in civil engineering due to the unique merits of light weight [1], high strength [2,3], fatigue and corrosion resistance [4][5][6][7], non-magnetic [8][9][10][11], reversibility [12] and the easy incorporation with fiber sensors [13,14]. Due to the brittle property of FRP materials, FRP bars are usually fabricated with a specific length for the convenience of storage and transportation, and thus they need to be spliced in field application, especially in high-rise or long-span structures.…”

Section: Introductionmentioning

confidence: 99%

Design and Evaluation of a New Resin-Filled GFRP Pipe Connection System for Butt Splicing of FRP Bars

Huang

Lian

et al. 2020

Materials

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Fiber-reinforced polymer (FRP) bars are one of the promising alternatives for steel bars used in concrete structures under corrosion or non-magnetic environments due to the unique physical properties of FRP materials. When compared with steel bars, FRP bars are difficult to be spliced in field application due to their anisotropy and low shear and compressive strengths. In view of this, the paper presents a new non-metallic connection system (i.e., resin-filled glass fiber-reinforced polymer (GFRP) pipe connection system) for the butt splicing of FRP bars. With the proposed connection system and a simplified trilinear interfacial bond-slip model, a set of design formulas were derived based on the requirement that the proposed connection system should provide a load transfer capacity beyond the tensile capacity of the spliced FRP bars (i.e., to fulfill the high tensile strength of FRP materials). Besides, considering the fabrication error-induced load transfer capacity reduction of the connection system in field application, a correction factor was introduced in the paper to compensate for the reduced load transfer capacity by increasing the FRP bar anchorage length. At last, to estimate the effectiveness of the proposed connection system and the derived design formulas, nine specimens were fabricated with a kind of commercially available basalt fiber-reinforced polymer (BFRP) bars and the designed connection system and tested under unidirectional tension to study their tensile performance. With the comparison between the tested and theoretical results, the effectiveness of the proposed connection system and the derived design formulas are verified.

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“…Among them, steel fiber reinforced concrete (SFRC) is a very promising material in which short steel fibers are uniformly distributed in the concrete to enhance the performance of conventional reinforced concrete. For the last two decades, SFRC has been successfully applied in a variety of applications, such as pavements and overlays, airport runways and structures [ 4 ], [ 5 ], due to the cost-effective features. For example, when the fraction volume of steel fiber is 1%, the steel fibers in the concrete will be 3.2 kg/m 3 , which will increase the costs ¥ 20.8 per m 3 for SFRC bridge piers.…”

Section: Introductionmentioning

confidence: 99%

Seismic collapse assessment of bridge piers constructed with steel fibers reinforced concrete

Pang¹,

Li²

2018

PLoS ONE

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Steel fiber is one of the most widely used reinforcements to improve the performance of concrete members. However, few studies have been proposed to study the seismic performance of bridge piers constructed with steel fiber reinforced concrete. This paper presents the collapse vulnerability assessment of typical single bridge piers constructed with steel fibers. Fiber element models of RC bridge piers with and without steel fibers are firstly built by selecting suitable cyclic constitutive laws of steel fiber reinforced concrete, and then calibrated using the experimental results. The seismic capacity and inelastic demand of RC piers with steel fibers are quantified using both nonlinear static pushover analyses and nonlinear incremental dynamic analyses (IDA). In order to conduct the IDA, a suite of 20 earthquake ground motions are selected and scaled to different levels of peak ground acceleration (PGA). Collapse fragility curves are then generated using the maximum drift ratio of piers as the engineering demand parameter (EDP). In order to investigate the impact of various parameters on the collapse fragility curves, six parameters are considered in the parametric study: peak compressive strength of concrete, yield strength of steel, longitudinal reinforcement ratio, axial load ratio, transverse hoops ratio and steel fiber content. It was observed that the concrete strength, longitudinal reinforcement ratio and steel fiber content could significantly affect the collapse fragility curve of the bridge piers with steel fibers.

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Self-Stressed Steel Fiber Reinforced Concrete as Negative Moment Connection for Strengthening of Multi-Span Simply-Supported Girder Bridges

Cited by 14 publications

References 24 publications

Expansive and mechanical properties of textile reinforced self-stressing concrete

Expansive and mechanical properties of textile reinforced self-stressing concrete

Design and Evaluation of a New Resin-Filled GFRP Pipe Connection System for Butt Splicing of FRP Bars

Seismic collapse assessment of bridge piers constructed with steel fibers reinforced concrete

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