Bridge health monitoring and damage identification of truss bridge using strain measurements

Abstract

A novel technique to identify bridge damage using genetic algorithms and simulated annealing is proposed in this article. In the proposed method, the cross-sectional area of the damaged member is set as a variable that can be updated. An objective function was investigated to estimate the current condition of the damaged members. This function is the relationship between the measured strain and the analytical strain at the damage location. To obtain better agreement, the parameters were then identified using a genetic algorithm and simulated annealing to minimize the objective function. The proposed method was verified by a truss bridge and can directly estimate the damage based on strain measurements.

Mechanical Identification of Materials and Structures with Optical Methods and Metaheuristic Optimization

“…A rapid survey of the optimization literature produced over the last 15 years reveals that GA [44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62], DE [63,64,65,66,67,68,69,70,71,72,73,74,75], SA [76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97], HS [98,99,100,101,102,103,104,105,106,107,108,109,110,…”

Parameter Identification of Multispan Rigid Frames Using a Stiffness Separation Method

“…Subsequently, the objective function of Substructure 1 was established based on its measured displacements under 1, 2, 4, 5, 7, and 8 DOFs, as well as their corresponding analytical displacements. Similarly, the objective function of Substructure 2 was derived based on its measured displacements under 13,14,16,17,19, and 20 DOFs, In those four damage scenarios, Node 4 separates the entire rigid frame structure into two substructures, and the measured displacements are located at 10, 11, and 12 DOFs. Substructures 1 and 2 were extracted from the stiffness matrix of the overall structure.…”

“…Static and dynamic parameter identification methods are two distinct approaches used in the field [ 16 , 17 , 18 , 19 , 20 , 21 ]. Some researchers have made remarkable progress in the field of structural damage identification using static responses.…”

A review of the application of the simulated annealing algorithm in structural health monitoring (1995-2021)

“…Xiao et al [118] 2019 This paper applies GA and SA to minimize an objective function relying on strain measurements for damage identification in a large-scale bridge.…”