In this paper, a novel and simple method for predicting the peak response of RC beams subjected to impact loading is proposed. The theoretical basis calculating force originates from contact law, principle conservation energy, impulse‐momentum theorem, wave theory. Additionally, conventional beam theory, in conjunction with well‐known layered‐section approach, utilized obtain force‐deflection relationship beam. Subsequently, by taking into account strain rate effect, maximum midspan...

Reinforced concrete (RC) beams under the impact loading are typically prone to suffer shear failure in local response phase. In order enhance understanding of mechanical behavior RC beams, their dynamic and demand numerically investigated this paper. A 3D finite-element model is developed validated against experimental data available literature. Taking advantage above calibrated numerical model, an intensive parametric study performed identify effect different factors including velocity,...

Vehicle collision is an important reason for failing urban or highway bridges. However, few works have focused on the probability of damage to a bridge under such extreme loads. In this work, impact-fragility analysis was conducted calculate exceeding damaged state systems, in which conditional upon vehicle impact velocity, and soil–structure interaction (SSI) included. Available tests scaled vehicle–bridge pier systems by previous researchers were utilized validate finite-element (FE) model...

Extreme actions, such as impact loads, contain many uncertainties and hence, may not be analyzed by a deterministic approach. In this paper, an effective framework for performance evaluation of reinforced concrete (RC) beams subjected to loadings is proposed. For purpose, simple yet model considering the shear-flexural interaction developed based on available test results. By incorporating shear effect, both maximum displacement force are well predicted, which proposed analysis RC validated....

This paper presents a numerical study on the performance of reinforced concrete (RC) bridge structures subjected to heavy goods vehicle (HGV) collision. The objectives this are investigate dynamic response and failure modes different types bridges under impact loading as well give an insight into simplified methods for modeling structures. For purpose, detailed finite-element models HGV established verified against full-scale collision experiment recent traffic accident. An intensive...

Anti-impact design is a very important aspect to ensure the safety of reinforced concrete (RC) bridges against extreme loads, such as explosions from terrorists attacks and accidental collisions rockfalls vehicles. The impact behavior pier columns, which most vertical components in bridge structures, have attracted much attention recent years, experimental studies on scaled columns been conducted by many researchers. It has acknowledged that size effect significant influence dynamic response...

This paper aims to study the dynamic response and damage of airtight protective doors nuclear power plants subjected tornado wind-borne missile impact. Firstly, a safety performance evaluation method is proposed, considering structural characteristics door relying on support rotation airtightness. Then, commercial finite element (FE) program LS-DYNA utilized perform numerical simulations in exposed tornadoes impacts. Subsequently, parameter analysis employed investigate impact keel quantity,...

Reinforced concrete (RC) beams against lateral impact loading usually undergo a local response phase and an overall phase. In view that the RC are prone to suffer shear failure in first stage, aim of this work is investigate transient mechanism underlying subjected stage. A refined FE model has been established by using LS-DYNA. Parametric studies conducted effect velocity, mass span-depth ratio on beams. Numerical results show there big difference between phenomena static loading, such as...

Vehicle-impact force to the bridge piers depends on many factors, however, only a constant static is specified as design value in anti-impact of bridge, which are far from enough correctly describe dynamic effects impact nor meet growing demands rapid development modern transportation and infrastructure construction. In order clarify influence all structural parameters heavy vehicle-bridge impact, refined FE model built systematic parametrical study conducted. Attentions focused several...

In the present study, 3D elasto-plastic finite element models of prototype pier column under impact loading are established by using LS-DYNA and validated against observations from a field test in literature. The effect essential parameters including velocity, mass, axial load ratio, elevation on response RC columns also discussed detail. Then, novel damage assessment method based sectional factor is put forward to quantify level columns, resistance mechanism process explored. Results show...