@Article{cmes.2020.09047,
AUTHOR = {Zishen Li, Xiangling Gao, Zicheng Tang},
TITLE = {Safety Performance of a Precast Concrete Barrier: Numerical Study},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {123},
YEAR = {2020},
NUMBER = {3},
PAGES = {1105--1129},
URL = {http://www.techscience.com/CMES/v123n3/39307},
ISSN = {1526-1506},
ABSTRACT = {The numerical simulation for a new type of precast concrete barrier for viaducts
is carried out systematically. To obtain an accurate representation of the damage state of the
concrete barrier under the impact of a vehicle, a stochastic damage-plasticity model of the
concrete is adopted in the finite element model. Meanwhile, a simplified mathematical
model of the impact between vehicles and the concrete barrier was established and the
input energy was converted to the impact load to facilitate the investigation of the safety
performance of the concrete barriers. On this basis, a refined finite element (FE) model
of a precast concrete barrier was developed. The impact locations, impact load, boundary
constraints, and reinforcement types were used as variables and the dynamic response of
the precast concrete barrier was systematically analyzed under 36 working conditions. The
simulated results indicated that the damage state of the concrete barrier and the stress of the
reinforcing bars were accurately and quantitatively reflected. According to the computed
results, some suggestions were put forward for selecting the appropriate reinforcement type
of the precast concrete barrier and the connection between the superstructure and foundation.},
DOI = {10.32604/cmes.2020.09047}
}