Finite element modeling of steel-polypropylene hybrid fiber reinforced concrete using modified concrete damaged plasticity

Chi, Yin; Yu, Mao-Hong; Huang, Le; Xu, Lihua

doi:10.1016/j.engstruct.2017.06.039

Cited by 165 publications

(116 citation statements)

References 41 publications

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“…VII & VIII).The ultimate load carried by both specimen for different grades of concrete were almost similar in comparison with literature study. [5]…”

Section: E Ultimate Load and Deflectionmentioning

confidence: 99%

“…The modulus of elasticity of this fiber was around 3.5-4.3GPa and ultimate elongation was found to be 15%. [1,2,3,5] Polypropylene fiber available in variety shapes and types in market like plain, buttoned ends, fibrillated, twisted type, etc. The main disadvantage of fiber reinforced concrete was difficult in fabrication and cost needed is more compared to plain concrete.…”

Section: Introductionmentioning

confidence: 99%

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Toughness Characterization of Fiber Reinforced Concrete Beam using Fracture Mechanics

Malipatil¹,

Meti²,

Itti³

2020

IJEAT

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The study of fracture mechanics was very much essential because it gives clear idea of arising and propagation of cracks, cause for failure, life of structure, etc. The main aim of this research was to study the fracture behavior of fiber reinforced concrete which was reinforced with polypropylene fiber. The fiber used in concrete with different volume fraction like 0.5%, 0.75% and 1% of total volume of cementitious material. The specimens were prepared with different grades of concrete with different dosage of fiber and then subjected to three point bending test. Using test results the fracture properties like fracture energy, flexural strength; stress intensity factor, fracture toughness and stiffness were found. The experimental results showed that effectiveness of polypropylene fiber for different grades of concrete that is normal, medium and high strength concrete increases with increase in fiber volume and also the fracture properties of fiber reinforced concrete increases with increase in fiber volume and effectiveness of fiber was found for dosage of about 0.75-1% volume

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“…VII & VIII).The ultimate load carried by both specimen for different grades of concrete were almost similar in comparison with literature study. [5]…”

Section: E Ultimate Load and Deflectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Toughness Characterization of Fiber Reinforced Concrete Beam using Fracture Mechanics

Malipatil¹,

Meti²,

Itti³

2020

IJEAT

View full text Add to dashboard Cite

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“…Shotcrete and formwork concrete are described by the concrete plastic-damage constitutive model that simulates the cracking and crushing of concrete materials. e concrete plastic-damage model can be used to simulate the dynamic loading of blasting loads and has good convergence in the degradation of elastic stiffness caused by tensile and plastic strain [25][26][27]. e loading function of the concrete plastic-damage constitutive model is…”

Section: Models and Boundarymentioning

confidence: 99%

Influence of Small, Clear Distance Cross‐Tunnel Blasting Excavation on Existing Tunnel below

Duan

Gong

et al. 2019

Advances in Civil Engineering

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The vibration effect generated during tunnel excavation can influence or damage adjacent tunnels. Studying and controlling the blasting vibration effect has important theoretical and practical significance, especially for new tunnels. This paper takes the tunnel project of Gao Jiu Lu-Jia Hua Cross Tunnel in Chongqing as the research background and assesses the blasting vibration influence in the up-down cross-tunnel. Onsite monitoring and numerical simulation were used to analyze peak particle velocity (PPV) changes, stress distribution, and crown settlement during the excavation process of Gao Jiu Lu I Tunnel at Jia Hua Tunnel Left Line in the cross-section. Influence laws of blasting excavation in a small, clear distance cross-tunnel on an existing tunnel below were obtained. Results show that new tunnel blasting vibrations exerted the largest influence on the crown of the existing tunnel below in the cross-section. The maximum tensile stress of the secondary lining of the existing tunnel below was mainly concentrated in the crown area. The maximum compressive stress during excavation was concentrated in the crown foot, and the stress value was less than the tensile and compressive strength of the concrete. The loosening of the surrounding rock from blasting excavation of the new tunnel caused secondary settlement of the existing tunnel crown below. The cumulative settlement value at the cross-section of the two tunnels was the largest. With an increase in axial distance from the cross-section of the existing tunnel crown, the settlement value gradually declined and became stable. These research results have reference value for the construction of a small, clear distance cross-tunnel and provide theoretical guidance for similar tunnel excavation projects in the future.

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“…Concrete failure is the result of the progressive development of internal microcracks . By defining damage variable and establishing the evolution law, continuum damage mechanics (CDM) provides a theory that describes the microscopic growth of cracks and the macroscopic material property degradation . Safety analysis of concrete structures is thus made possible.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical modeling and damage prognosis on industrial RC building with preexisting defects

Tang

et al. 2019

Mat Design & Process Comms

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The two‐level hierarchical modeling method is developed for damage prognosis on reinforced concrete (RC) industrial buildings, with emphasis on one workshop case. Structural‐level finite element analysis is performed first to identify the key components. Subsequently, concrete damaged plasticity (CDP) model is introduced into the component‐level simulation that incorporates preexisting defects. Damage evolution on key components is realized. It is found that the end and middle sections of the beam and upper‐column corbel joint are the dangerous area of the global structure. The whole crane beam and the corbel joint are identified as structural key components. The simulated damage process on local crane beams subjected to the overloaded moving crane is consistent with the experimental results published in literature. The preexisting defects aggravate the unevenness of tensile stresses among steel bars. The work provides a numerical framework for damage prognosis and safety prediction on RC buildings under potentially happened loading scenarios, especially for those old industrial buildings that have been in service for decades.

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Finite element modeling of steel-polypropylene hybrid fiber reinforced concrete using modified concrete damaged plasticity

Cited by 165 publications

References 41 publications

Toughness Characterization of Fiber Reinforced Concrete Beam using Fracture Mechanics

Toughness Characterization of Fiber Reinforced Concrete Beam using Fracture Mechanics

Influence of Small, Clear Distance Cross‐Tunnel Blasting Excavation on Existing Tunnel below

Hierarchical modeling and damage prognosis on industrial RC building with preexisting defects

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