Inertial Effect on RC Beam Subjected to Impact Loads

Guo, Jinlong; Cai, Jianguo; Chen, Wensu

doi:10.1142/s0219455417500535

Cited by 28 publications

(17 citation statements)

References 18 publications

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“…If a beam segment, dx, has an acceleration A(x,t) at its center. Therefore, the inertial force acting on each element according to Newton's laws of motion is given by [36]:…”

Section: Dynamic Equilibriummentioning

confidence: 99%

“…If a beam segment, dx, has an acceleration A(x,t) at its center. Therefore, the inertial force acting on each element according to Newton's laws of motion is given by [36]: dI(x, t) = mA(x, t)dx (5) where P i (t), F(t), R l (t) and R r (t) are the inertial load, impact force, and reaction forces at the left and right side, respectively. m is the mass per unit length.…”

Section: Dynamic Equilibriummentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Equilibrium of CFRP-RC Square Elements under Unequal Lateral Impact

et al. 2021

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Building structure regularly needs reinforcement due to damage, specification requirements, and functional changes; carbon fiber reinforced polymer (CFRP) is widely used in structural reinforcement due to its high strength, lightweight, good corrosion resistance and easy construction. The regular square section reinforced concrete frame elements strengthened by CFRP material are taken as the research object. The dynamic response of CFRP to reinforced concrete elements under unequal lateral impact was discussed. This technical paper demonstrates that the test elements are subject to the bending failure mode, and the impact point and the near impact point support are severely damaged areas; the transversely wrapped elements are more abruptly broken, and the longitudinal wrapping elements and the number of wrapping layers can effectively reduce the level of damage. Analysis of the impact, deflection, and strain time history curves obtained in the test show that the wrapping mode and the number of layers have less influence on the impact force peak; the longitudinally wrapped elements and the plateau segment take longer. Dynamic equilibrium principle equation was proposed based on the experimental results. The horizontal partition plateau segment fluctuates greatly; the number of vertical wrap layers increases the plateau value. The larger the number of layers, the smaller the deflection caused by the impact. The longitudinal wrapping can effectively transmit the force.

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“…If a beam segment, dx, has an acceleration A(x,t) at its center. Therefore, the inertial force acting on each element according to Newton's laws of motion is given by [36]:…”

Section: Dynamic Equilibriummentioning

confidence: 99%

Section: Dynamic Equilibriummentioning

confidence: 99%

Dynamic Equilibrium of CFRP-RC Square Elements under Unequal Lateral Impact

et al. 2021

View full text Add to dashboard Cite

show abstract

“…21 Failure behavior of an RC column under mid-span impact load [124] areas may also be subjected to impact loads arising from the falling objects and rocks. Hence, many researchers have attempted in the literature investigating the impact forces, structural responses, and failure behaviors of RC beams analytically [2,[159][160][161][162][163][164], numerically [1,[165][166][167][168][169][170][171][172][173][174][175][176], and experimentally [18,20,166,[177][178][179][180][181][182][183][184][185][186][187] under low-rate [1,2,171,175,185,187] and relatively high rate [188][189][190][191] impact loads by focusing on the influence of the structural...…”

Section: Beams and Slabs Subjected To Impact Loadsmentioning

confidence: 99%

State-of-the-Art Review on Responses of RC Structures Subjected to Lateral Impact Loads

Zhang

Gholipour

Mousavi

2020

Arch Computat Methods Eng

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Reinforced concrete structures and structural members used in strategic infrastructures such as highway bridges, high-rise buildings, etc. are inherently subjected to lateral impact loads arising from the collision of vehicles, vessels, falling rocks, and rigid objects having different impact geometries, weights, and velocities. Due to the brittle nature of concrete materials, both localized and overall failure modes are very likely to occur in concrete structures under dynamic and impulsive loads. Hence, many attempts have been carried out in the literature to recognize the failure behaviors and to assess the vulnerability of concrete structure under lateral impact loads. This paper presents a comprehensive state-of-the-art review on the responses and failure behaviors of various types of concrete structures and structural members subjected to lateral impact loads based on analytical, numerical, and experimental studies carried out by the previous research works. In addition, the influences of various structural- and load-related parameters on the impact resistance and failure behaviors of different concrete structures under lateral impact loads are reviewed.

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“…The finite element code LS-DYNA has been extensively used in the literature to model the behaviour of Steel-RC beams under impact loads 14,[16][17][18][21][22][23][24][25][26][27] . The advantages of using LS-DYNA include the efficient computational capability and the availability of a comprehensive material library.…”

Section: Numerical Investigationsmentioning

confidence: 99%

Numerical Analysis of Behavior of Glass Fiber-Reinforced Polymer Bar-Reinforced Concrete Beams under Impact Loads

Saleh¹,

Sheikh²,

Remennikov³

et al. 2019

ACI Structural Journal

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This paper numerically investigates the behavior of glass fiber-reinforced polymer (GFRP) bar-reinforced concrete beams (GFRP-RC beams) under low-velocity impact loads. A finite element model has been developed and calibrated against the experimental investigation results of six GFRP-RC beams. The results of the numerical analysis have been found in very good agreement with the experimental investigation results. The finite element model captured the failure modes, crack profiles, midspan deflection, impact and reaction forces, and dynamic strain of the GFRP-RC beams. Moreover, a parametric study has been carried out to investigate the influence of the reinforcement ratio, compressive strength of concrete, drop mass, drop velocity, and impact energy on the response of GFRP-RC beams under lowvelocity impact loads. It was found that the drop mass and velocity significantly influenced the damage profiles of the beams, and the reinforcement ratio significantly influenced the midspan deflection and reactions at the support.

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Inertial Effect on RC Beam Subjected to Impact Loads

Cited by 28 publications

References 18 publications

Dynamic Equilibrium of CFRP-RC Square Elements under Unequal Lateral Impact

Dynamic Equilibrium of CFRP-RC Square Elements under Unequal Lateral Impact

State-of-the-Art Review on Responses of RC Structures Subjected to Lateral Impact Loads

Numerical Analysis of Behavior of Glass Fiber-Reinforced Polymer Bar-Reinforced Concrete Beams under Impact Loads

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