Reliability-Based Safety Evaluation of the BISTOON Historic Masonry Arch Bridge

Abstract

This research examines the probabilistic safety assessment of the historic BISTOON arch bridge. Probabilistic analysis based on the Load-Resistance model was performed. The evaluation of implicit functions of load and resistance was performed by the finite element method, and the Monte-Carlo approach was used for experiment simulation. The sampling method used was Latin Hypercube. Four random variables were considered including modulus of elasticity of brick and infilled materials and the specific mass of brick and infilled materials. The normal distribution was used to express the statistical properties of the random variables. The coefficient of variation was defined as 10%. Linear behavior was assumed for the bridge materials. Three output parameters of maximum bridge displacement, maximum tensile stress, and minimum compressive stress were assigned as structural limit states. A sensitivity analysis for probabilistic analysis was performed using the Spearman ranking method. The results showed that the sensitivity of output parameters to infilled density changes is high. The results also indicated that the system probability of failure is equal to p fsystem =1.55 × 10−3. The bridge safety index value obtained is βt = 2.96, which is lower than the recommended target safety index. The required safety parameters for the bridge have not been met and the bridge is at the risk of failure.

Multi-hazard reliability assessment of historical brick minarets

“…FE analysis of historical structures using micro-model and macro-model methods leads to accurate results [6]. Many studies have used the macro-model method as constitutive law of masonry materials and evaluate their structural behavior [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][18][19][20][21][22][23][24][25]. In this method, the components of 4 Outline procedure for reliability assessment under wind and earthquake hazards masonry materials (unit and mortar) and joints surfaces are not modeled separately still modeled as a homogeneous and continuous material with the same mechanical characteristics.…”

“…In this section, the procedure established in this paper is to examine the probability failure and its corresponding RI ( ) of the minaret under earthquake action presented. The load-resistance (L-R) method utilized in structural reliability assessment in many researches [21,22,[28][29][30][31][32][33][34], also used in the present study. A normal distribution function N(µ, σ) is chosen to define the statistical properties of random variables (RVs).…”

Multi‐hazard fragility analysis of RC bridges for high seismicity and high scouring scenarios

“…Thus, over the past few decades, studies focused on multi-hazard vulnerability analyses have gained momentum [8]. Accordingly, multi-hazard fragility analysis is widely reported in existing literature considering earthquake, tsunami, flood, scour, and other forces [9][10][11][12][13][14][15]. Mosleh et al [16] performed seismic vulnerability of pre-1990 concrete bridge and developed analytical fragility functions.…”

Applications of Stratigraphic Analysis to Enhance the Inspection and Structural Characterization of Historic Bridges

“…Although an extensive review of the state of the art on the subject is not the aim of this paper, several investigations and studies can be found in the technical literature; in most cases these studies are aimed at monitoring the state of the infrastructures in order to assess their safety. The classical studies in the structural field aimed at evaluating the mechanical behavior of the artifacts, the characterization and state of conservation of the component materials, their seismic vulnerability and structural modeling for the safety of road and railway bridges [9][10][11][12][13][14][15][16][17][18].…”