Shear Behaviour of UHPC Beams with Varying Degrees of Fibre and Shear Reinforcement

Randl, Norbert; Harsányi, Peter

doi:10.1007/978-3-319-59471-2_60

Cited by 12 publications

(9 citation statements)

References 4 publications

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“…The database developed for this study contains 488 experiments of SFRC beams with longitudinal tension reinforcement (mild steel only) and without transverse shear reinforcement failing in shear reported in the literature. The consulted references are: Singh and Jain [4], Sahoo and Sharma [67], Shoaib, Lubell, and Bindiganavile [68] (lightweight beams), Manju, Sathya and Sylviya [69], Arslan, Keskin, and Ulusoy [70], Parra-Montesinos et al [71], Rosenbusch and Teutsch [72], Sahoo, Bhagat, and Reddy [73] (T-beams), Amin and Foster [74], Tahenni et al [75], Narayanan and Darwish [76], Cucchiara, La Mendola, and Papia [77], Kwak et al [48], Lim and Oh [78], Dinh, Parra-Montesinos and Wight [79], Lima Araujo et al [80], Casanova, Rossi, and Schaller [81], Aoude et al [82], Minelli and Plizzari [83], Kang et al [84], Casanova and Rossi [85], Lim, Paramasivam, and Lee [44], Mansur, Ong, and Paramasivam [54], Zarrinpour and Chao [86], Noghabai [87], Randl, Mészöly, and Harsányi [88], Ashour, Hasanain, and Wafa [59], Tan, Murugappan, and Paramasivam [89], Pansuk et al [90], Kim et al [91], Sharma [52], Narayanan and Darwish [92], Li, Ward, and Hamza [93], Swamy, Jones, and Chiam [94], Cho and Kim [95], Greenough and Nehdi [50], Kang et al [96], Dupont and Vandewalle [97] with further information in [98], Swamy and Bahia [99], Batson, Jenkins, and Spatney [100], Zhao et al [101], Jindal [102], Shin, Oh, and Ghosh [103], Imam, Vandewalle, and Mortelmans [104,105], Huang, Zhang, and Guan […”

Section: Methodsmentioning

confidence: 99%

“…The notations used in this database are given in the “List of notations”. For a number of references [42,44,50,52,54,59,67,69,70,71,72,73,75,76,77,78,80,81,83,84,85,88,89,94,96,97,98,99,100,102,103,104,106,107,109,110,111,112,115,116,117,118,119,123,124] information about the geometry of the support and loading plate was missing. These values were then approximated based on figures of the test setup in the original reference.…”

Section: Methodsmentioning

confidence: 99%

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Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups

Lantsoght

2019

Materials

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Adding steel fibers to concrete improves the capacity in tension-driven failure modes. An example is the shear capacity in steel fiber reinforced concrete (SFRC) beams with longitudinal reinforcement and without shear reinforcement. Since no mechanical models exist that can fully describe the behavior of SFRC beams without shear reinforcement failing in shear, a number of empirical equations have been suggested in the past. This paper compiles the existing empirical equations and code provisions for the prediction of the shear capacity of SFRC beams failing in shear as well as a database of 488 experiments reported in the literature. The experimental shear capacities from the database are then compared to the prediction equations. This comparison shows a large scatter on the ratio of experimental to predicted values. The practice of defining the tensile strength of SFRC based on different experiments internationally makes the comparison difficult. For design purposes, the code prediction methods based on the Eurocode shear expression provide reasonable results (with coefficients of variation on the ratio tested/predicted shear capacities of 27–29%). None of the currently available methods properly describe the behavior of SFRC beams failing in shear. As such, this work shows the need for studies that address the different shear-carrying mechanisms in SFRC and its crack kinematics.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups

Lantsoght

2019

Materials

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“…Moreover, only those experiments are reported in this study that have failed in shear. The experimental studies have been undertaken by several other researchers [ 3 , 4 , 12 , 13 , 17 , 24 , 25 , 29 , 30 , 46 , 47 , 49 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 ,…”

Section: Review Of Previous Studiesmentioning

confidence: 99%

Improved Shear Strength Prediction Model of Steel Fiber Reinforced Concrete Beams by Adopting Gene Expression Programming

et al. 2022

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In this study, an artificial intelligence tool called gene expression programming (GEP) has been successfully applied to develop an empirical model that can predict the shear strength of steel fiber reinforced concrete beams. The proposed genetic model incorporates all the influencing parameters such as the geometric properties of the beam, the concrete compressive strength, the shear span-to-depth ratio, and the mechanical and material properties of steel fiber. Existing empirical models ignore the tensile strength of steel fibers, which exercise a strong influence on the crack propagation of concrete matrix, thereby affecting the beam shear strength. To overcome this limitation, an improved and robust empirical model is proposed herein that incorporates the fiber tensile strength along with the other influencing factors. For this purpose, an extensive experimental database subjected to four-point loading is constructed comprising results of 488 tests drawn from the literature. The data are divided based on different shapes (hooked or straight fiber) and the tensile strength of steel fiber. The empirical model is developed using this experimental database and statistically compared with previously established empirical equations. This comparison indicates that the proposed model shows significant improvement in predicting the shear strength of steel fiber reinforced concrete beams, thus substantiating the important role of fiber tensile strength.

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“…The test results also indicated that longitudinal shear failure may be the critical design condition for prestressed UHPC I-shaped beams with a significant moment gradient. Randl et al (2018) studied the effect of fiber content (up to V f ¼ 2%) and stirrups on the shear failure behavior of I-shaped single-span UHPC beams. The addition of a 1%-2% V f of steel fibers led to finer distributed shear cracks and significantly higher shear strength, stiffness, and ductility.…”

Section: Shear Behavior and Designmentioning

confidence: 99%

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

2021

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The number of studies on ultrahigh-performance concrete (UHPC) or ultrahigh-performance fiber-reinforced concrete (UHP-FRC) for more resilient and sustainable reinforced concrete (RC) structures has rapidly increased in recent years due to the superior mechanical and durability properties of UHPC. The application of UHPC as a replacement for conventional concrete materials in various RC elements necessitates a thorough understanding of the structural behavior of the reinforced UHPC (R/UHPC) components under various types of loadings. This paper presents a systematic review of the state-of-the-art developments in R/UHPC elements. It addresses various topics including beams, columns, beam-column joints, shear walls, bridges, structural retrofitting, and applications such as seismic and impact. Due to the ultrahigh tensile, compressive, and bond strengths, unique strain-hardening behavior, and ductility of UHPC, R/UHPC structures may exhibit substantially different behavior than conventional RC structures at both the component and system levels. This implies that particular attention must be paid when design and analysis approaches for conventional RC elements are applied to R/UHPC elements, and suggests that developing new design philosophies is warranted to take advantage of UHPC's unique mechanical properties. The present paper summarizes the developments in analysis and design approaches for R/UHPC elements under axial forces, shear forces, and bending moments, and highlights the advantages and limitations of these approaches. Important design considerations for effectively utilizing UHPC in structural elements are also suggested. In addition to normal-strength steel reinforcing bars, the potential for reinforcing UHPC with high-strength steel bars, fiber-reinforced polymer components, and structural steel shapes is discussed based on the results of pioneering studies. Finally, this paper identifies challenges and suggests future directions for research on UHPC in structural engineering.

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Shear Behaviour of UHPC Beams with Varying Degrees of Fibre and Shear Reinforcement

Cited by 12 publications

References 4 publications

Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups

Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups

Improved Shear Strength Prediction Model of Steel Fiber Reinforced Concrete Beams by Adopting Gene Expression Programming

A Review of Developments and Challenges for UHPC in Structural Engineering: Behavior, Analysis, and Design

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