Review of Effects of Loading Rate on Reinforced Concrete

Fu, Houli; Erki, M. A.; Seçkin, Mine

doi:10.1061/(asce)0733-9445(1991)117:12(3660)

Cited by 106 publications

(58 citation statements)

References 14 publications

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“…Similar observations for reinforced concrete (RC) beams have been reported by several researchers [20][21][22][23]. Takeda et al [20] reported that some loss of shear strength of concrete is obtained when the rate of loading is increased, and Fu et al [21] and John and Shah [23] stated that the structures designed to fail in a ductile flexural failure at quasi-static load could fail in a shear failure at impact load. However, there are very little test data on the comparison of failure modes under quasi-static and impact loads; thus, further research is required to justify this result.…”

Section: Crack Behavior and Failure Modesupporting

confidence: 70%

Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading

Yoo

Banthia

Kim

et al. 2015

Composite Structures

159

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Section: Crack Behavior and Failure Modesupporting

confidence: 70%

Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading

Yoo

Banthia

Kim

et al. 2015

Composite Structures

159

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“…In reinforcing steel at high strain rates, yield and ultimate stress is increased and its ultimate strain is also increase [47,55,57]. Malvar and Crawford from published data resulted by high strain rate tests on steel bars, have suggested an Equation 22 to estimate steel DIF coefficient for ultimate and yield stress as follows [55].…”

Section: Solving Equation Of Sdof With Considering Effect Of High Strmentioning

confidence: 99%

“…The above equation is established for steel with yield strength of 710-290 MPa and strain rate of 0/0001 to 225 S -1 . Basically, in the various strain rates no change is considered in the elastic modulus and the strain of reinforcing steel [47,[56][57][58].…”

Section: Solving Equation Of Sdof With Considering Effect Of High Strmentioning

confidence: 99%

Preparing Pressure-Impulse Diagrams for Reinforced Concrete Columns with Constant Axial Load using Single Degree of Freedom Approach

Izadifard¹,

Mollaei²,

Omran³

2016

Int J Adv Tech

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In this paper, moment-curvature behavior of reinforced concrete column with constant axial load is determined using finite element method and then it is introduced to a single degree of freedom (SDOF) model based on EulerBernoulli theory. Using this SDOF model, dynamic response of the RC column under the blast loading is estimated. The introduced SDOF includes secondary moments (P-δ) effects, nonlinear behavior of the material and effects of strain rate on concrete and steel materials through the time calculation of the model. Results obtained from SDOF model for transverse displacement of RC column under blast loading is compared to analysis by finite element software OPENSEES. Then, introduced SDOF method is used for drawing Pressure-Impulse (P-I) diagram of the column with considering the presence of axial compressive load. According to the results, introduced SDOF model has simple and quick computations and accuracy of predictions is acceptable.P-δ effects and overall and local damages and their impact on the P-I diagram can be evaluated. However, this method due to the high complexity, high time of calculations and the need to have enough skills and experience of using software, for extensive parametric studies isn't very appropriate.In this paper, the flexural behavior (moment-curvature) of a reinforced concrete column section using finite element software of open system for earthquake engineering simulation (OpenSees) has been determined and introduced to the calculation of SDOF analytical model in order to estimate transverse displacement response of column under simultaneous compressive axial force and lateral loading of blast. The SDOF introduced model includes the effects of secondary moments (P-δ) and also the effects of high strain rates on the behavior specifications of concrete and steel rebar. In this method, to consider the effects of the existence of column axial loading (P-δ) the concept of reduced resistance function is used. Using the introduced process, P-I dimensionless curves have been plotted for reinforced concrete column. Figure 2 shows the distribution of stress and strain in the rectangular RC section at the ultimate state. Strain distribution in the height of the section has been assumed to be linear and curvature of section (θ) is equal to the slope of this line. Also, the tensile strength of concrete has been ignored. In the figure above, f yk is the yield stress of reinforcement steel, f cu is the ultimate strength of concrete, ε cu is the ultimate strain of concrete, xu is the depth of neutral axis in the ultimate state, b is the width, h is Equivalent Single Degree of Freedom Model

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“…Far less dynamic testing has been carried out on concrete in tension than in compression (Fu et al 1991), and therefore there is insufficient data available to allow the derivation of reliable empirical expressions. Suaris and Shah (1983) suggested that rate sensitivity is considerably more pronounced in tension and flexure than in compression.…”

Section: Tensile Strengthmentioning

confidence: 99%

Discrete Element Method for Modeling Penetration

Tavarez

Plesha

2004

Problems Involving Thermal Hydraulics, Liquid Sloshing, and Extreme Loads on Structures

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of Information. SPONSORING I MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSORIMONITOR'S ACRONYM(S), DISTRIBUTION /AVAILABILITY STATEMENTUnclassified -Unlimmeted distribution. SUPPLEMENTARY NOTES ABSTRACTThis research resulted in the development of the Discrete Element Method (DEM) as a general, robust, and scalable computer technique for unified modeling of the mechanical behavior of solid and particulate materials, including the transition from solid phase to particulate phase. Applications include gross damage of structures due to extreme load events, and high speed penetration of structures, involving materials such as concrete, rock, and novel combinations of these.This computer approach is useful for assessing vulnerability of military and civilian facilities such as nuclear power reactors, transportation facilities, buildings, and so on, and for assessing efficacy of military operations involving such structures.One of the primary accomplishments of this research is the development of interelement potentials for the DEM method such that accurate and convergent results are obtained. This research resulted in the development of the Discrete Element Method (DEM) as a general, robust, and scalable computer technique for unified modeling of the mechanical behavior of solid and particulate materials, including the transition from solid phase to particulate phase. Applications include gross damage of structures due to extreme load events, and high speed penetration of structures, involving materials such as concrete, rock, and novel combinations of these. This computer approach is useful for assessing vulnerability of military and civilian facilities such as nuclear power reactors, transportation facilities, buildings, and so on, and for assessing efficacy of military operations involving such structures. One of the primary accomplishments of this research is the development of interelement potentials for the DEM method such that accurate and convergent results are obtained. SUBJECT

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Review of Effects of Loading Rate on Reinforced Concrete

Cited by 106 publications

References 14 publications

Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading

Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading

Preparing Pressure-Impulse Diagrams for Reinforced Concrete Columns with Constant Axial Load using Single Degree of Freedom Approach

Discrete Element Method for Modeling Penetration

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