Prediction on the flexural deflection of ultra-high strength rebar reinforced ECC beams at service loads

Liao, Qiao; Li, Lingzhi; Li, Bixiong; Yu, Jiangtao

doi:10.1016/j.istruc.2021.04.050

Cited by 13 publications

(3 citation statements)

References 30 publications

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“…ECC has high tensile strain capacity but normal strength. 13,32 In contrast, UHPC has high strength and elastic modulus but comparatively low tensile strain capacity. [9][10][11][12] It is advantageous to combine ECC and UHPC into a composite system to resist blast.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Liao

Xie

2022

Structural Concrete

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Ultra-high ductile concrete (UHDC) is known for ultra-high tensile ductility, and ultra-high performance concrete (UHPC) has ultra-high compressive strength. Reinforced UHDC-UHPC panels that are made of UHDC and UHPC (i.e., hybrid panels) are expected to have excellent blast-resistance capacity.However, only limited research is devoted to study the dynamic performance of the panels under explosion. To further investigate the dynamic performance of such kind of composite structural system, numerical simulations are carried out through LS-DYNA. The developed material models are used for describing the mechanical properties of UHDC, UHPC and steel bars at high strain rate.Based on the corresponding field blast test results, the feasibility and accuracy of the adopted finite element models are validated. Furthermore, parameter analysis is applied for investigating the effects of scale distance, reinforcement ratio and concrete type on the dynamic performance. It is concluded that the maximum deflection of reinforced UHDC-UHPC panels reduces with increasing scale distance and reinforcement ratio. Reinforced UHDC-UHPC panels possess excellent blast-resistance capacity in comparison with reinforced concrete panels.

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Section: Introductionmentioning

confidence: 99%

“…ECC has high tensile strain capacity but normal strength 13,32 . In contrast, UHPC has high strength and elastic modulus but comparatively low tensile strain capacity 9–12 .…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Liao

Xie

2022

Structural Concrete

Self Cite

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“…However, these specifications are not perfectly suitable for ECC members. Recently, studies on the calculation of flexural strength were more mature in the case of RECC beams (Cui et al, 2021;Qiao et al, 2021;Wang et al, 2021). In the case of RECC columns, Li L. Z. et al (2019) study the behavior of reinforced, high-strength ECC columns under eccentric compression experimentally, and an analytical model is proposed for the load-bearing capacity of RECC columns under large eccentric compression.…”

Section: Introductionmentioning

confidence: 99%

Sectional Analysis of Reinforced Engineered Cementitious Composite Columns Subjected to Combined Lateral Load and Axial Compression

Sun

et al. 2022

Front. Mater.

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The ultra-high tensile ductility of ECC provides an alternative way to enhance the ductility of structural members by using high-ductile matrix material instead of simply increasing reinforcements. However, the application of ECC members is still limited due to the relatively short research time and the lack of design specifications. Being equivalent to eccentric compressive members, a sectional analysis of RECC columns subjected to combined lateral load and axial compression are proposed in this paper. Based on the design theory of load capacity of eccentric compression columns and the unique constitutive model of ECC, the calculation equations for the sectional load capacity of RECC columns are derived. The analytical prediction of the load capacity of RECC column is evaluated in comparison with that of experiments that confirm the capacity of the proposed calculation method to capture the behavior of the RECC column accurately. The strength-interaction diagrams showing the axial force-moment (N-M) interaction curves are then constructed for analysis using the proposed calculation equations. A parametric study is also carried out by using the proposed calculation equations, demonstrating the effects of ultimate tensile strain of ECC, compressive and tensile strength of ECC, yield strength of steel bar, and reinforcement ratio on the N-M interaction curves of RECC columns. The investigations exhibited in this paper are expected to provide insight into the design principles of RECC columns.

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Seawater sea-sand engineered cementitious composites contribution to shear performance of beams reinforced with BFRP bars

Liao

Shi

et al. 2023

Composite Structures

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Prediction on the flexural deflection of ultra-high strength rebar reinforced ECC beams at service loads

Cited by 13 publications

References 30 publications

Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Numerical investigation on dynamic performance of reinforced ultra‐high ductile concrete–ultra‐high performance concrete panel under explosion

Sectional Analysis of Reinforced Engineered Cementitious Composite Columns Subjected to Combined Lateral Load and Axial Compression

Seawater sea-sand engineered cementitious composites contribution to shear performance of beams reinforced with BFRP bars

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