Open AccessConstitutive models for FE analysis of pile founded buried arch bridge
Author(s) -
Konstantin Kazakov,
Lena Mihova,
Doncho Partov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/951/1/012004
Subject(s) - mohr–coulomb theory , structural engineering , constitutive equation , geotechnical engineering , cohesion (chemistry) , pile , engineering , arch , ultimate tensile strength , finite element method , bridge (graph theory) , plane stress , geology , materials science , composite material , physics , medicine , quantum mechanics
The paper presents plane strain FE modeling of a pile founded bridge, made from reinforced concrete, by using plate elements for the structure and the soil body. The soil-structure contact is modeled by interface finite elements. The numerical analysis is performed by the Plaxis 2D software. The mechanical behavior of the bridge is approximated by the constitutive models of Hooke and Mohr-Coulomb. Two sets of values of the Mohr-Coulomb strength parameters (cohesion and internal friction angle) for the concrete are obtained - on the basis of the theoretical uniaxial compressive and tensile strengths and on the basis of relationships in the Eurocode 2. The advanced constitutive HSM model is used for the soil. The construction and service periods of the bridge are simulated by a sequence of representative states. The mechanical response of the bridge undergoing backfill and road loads is analysed.