Numerical analysis of damage zones in a bridge

Abstract

Purpose The purpose of this paper is to present a numerical analysis of structural monitoring for damage zones detection. The study is performed with Ansys finite element software, which reads in batch mode programming a previously generated mesh data file and computes the transient dynamic solution for each time-step iteration within an analysis time range. Design/methodology/approach The approach itself is applied on a bridge structure which can be potentially subjected to damage zones due to severe loads cases and or earthquakes vibrations. The ideal Von Mises failure criterion ellipsoid envelope is applied for the detection of overstepped computed stresses and strains. Findings This numerical analysis allows computing, for each time-step iteration, the dynamic displacements at each degree of freedom and the corresponding stresses and strains inside the elements under the action of several times dependent loads cases. Practical implications Several simulations are considered to quantify the external loads. Originality/value The material properties of reinforced concrete RC are calculated for an existing specific bridge structure case. The RC strength is then introduced from the basic compounds material properties using the corresponding volumes fractions.

Analysis of cracking evolution mode of the monobloc sleeper

“…For very rigid solid elements, such as concrete, the solid 65 type element was chosen while the Solid 45 element was used to model the rigid steel supports. On the other side, the Beam 188 element was assigned for the cables of prestressed, respecting the recommendations of the software manual (Moussaoui and Chabaat, 2019; ANSYS 14.5, 2011a, b). Discussions and validations of the numerical results will be focused on certain key parameters such as displacements, stresses and deformations at level of the rail seat.…”

“…These latest have interested several researchers, besides a wide body of literature exists (Kaewunruen et al. , 2022; Shin et al ., 2021; Farnam and Rezaie, 2019; Moussaoui and Chabaat, 2019; You et al ., 2017, 2019; Rezaie et al. , 2012; ANSYS 14.5, 2011a; Kaewunruen and Remennikov, 2007) and (Belhadj et al ., 2019; Kaewunruen et al ., 2018; Kaewunruen and Remennikov, 2006a, 2006b).…”

“…The development of 3-D numerical models capable of reproducing positive tests, where the nonlinear material properties of concrete sleepers can be included in detailed analyzes. These latest have interested several researchers, besides a wide body of literature exists (Kaewunruen et al, 2022;Shin et al, 2021;Farnam and Rezaie, 2019;Moussaoui and Chabaat, 2019;You et al, 2017You et al, , 2019Rezaie et al, 2012;ANSYS 14.5, 2011a;Kaewunruen and Remennikov, 2007) and (Belhadj et al, 2019;Kaewunruen et al, 2018;Remennikov, 2006a, 2006b).…”

Thermal analysis of concrete slabs with insulating materials using ANSYS

“…Many studies focused on the temperature distribution of concrete through finite element models in ANSYS under fire. Concrete frames, beams, columns, floors, bridge elements and mass structures were simulated in ANSYS to evaluate the thermal behavior when exposed to fire (Adekunle, 2019; Almeida et al , 2010; Kumar and Srivastava, 2017; Kurian et al , 2013; Mahamid et al , 2019; Moussaoui and Chabaat, 2020; Mustafa et al , 2019; Nguyen Trong et al , 2019; Peng et al , 2019; Wang, 2020; Zhang, 2021). The majority of investigations adopted a similar procedure of FE modeling in ANSYS to understand concrete thermal insulation performance (under specific temperatures) and thermal behavior under fire.…”