Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"First Order Reliability Method"”.
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Performance-based earthquake engineering with the first-order reliability method
… field of study that complements the prescriptive methods that the design codes provide to ensure adequate seismic performance of structures. Accounting for uncertainties in the performance assessments forms an important component in this area. In this context, the present study focuses on two …
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Modified inverse first-order reliability method (I-FORM) for predicting extreme sea states
… period of record. The use of the inverse first-order reliability method (I-FORM) is standard design practice for generating environmental contours. This thesis develops enhanced methodologies for data analysis prior to the application of the I-FORM, including the use of principal component …
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Reliability-Based Topology Optimization with Analytic Sensitivities
… it may have a design which is too conservative. Reliability-Based Design Optimization (RBDO) is an alternative approach which directly considers the likelihood of failure by incorporating a reliability analysis step such as the First-Order Reliability Method (FORM). The FORM analysis requires the …
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Reliability Analysis of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Steel Beams
… techniques used to produce the joints. Reliability analysis of adhesively bonded CFRP-to-steel double-lap shear (DLS) joints with thin outer adherends was performed first, to study the bond behavior when dominated by adhesive shear stresses. A comprehensive experimental database of the …
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An effective optimisation method for multifactor and reliability-related structural design problems
This thesis first presents a systematic design procedure which satisfies the required strength and stiffness, and structural mass for conceptual engineering structural designs. The procedure employs a multi-objective and multi-disciplinary (MO–MD) optimisation method (multifactor optimisation of …
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Segmental multi-point linearization for topology optimization and reliability analysis
… gradient-based optimization algorithm to solve reliability-based topology optimization (RBTO) of structures under loading and material uncertainties. Topology optimization is a powerful design tool as it can provide the most efficient material layout for structural design problems under given …
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Probabilistic Post-Liquefaction Residual Shear Strength Analyses of Cohesionless Soil Deposits: Application to the Kocaeli (1999) and Duzce (1999) Earthquakes
… All available procedures utilize deterministic methods for estimation and selection of the liquefied shear strength. Over the past decade, there has been an increasing trend towards analyzing geotechnical problems using probability and reliability. This study presents procedures for assessing …
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Time-dependent reliability methodologies with saddlepoint approximation
… properties and time-variant loads. Therefore the reliability of engineering systems becomes time-dependent. It is crucial to predict the time-dependent reliability in the design stage, given possible catastrophic consequences of a failure. Although extensive research has been conducted on …
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Reliability analysis of green roofs under different storm scenarios
… area. Green infrastructure offers an alternative method of runoff reduction, by using natural processes to infiltrate, store, and treat runoff at its source. In particular, green roofs can promise multiple benefits in terms of runoff reduction, air quality improvement, and mitigation of the urban …
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Shear Reliability Analysis of Reinforced Concrete Bridges Designed to TMH7
… in question. This study investigates the shear reliability performance of TMH7 using heavy vehicle weigh-in-motion (WIM) data. The study is limited to normal traffic conditions and single-span reinforced concrete bridges. Reliability analyses were performed for two case studies: First case study …
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System Reliability-Based Design and Multiresolution Topology Optimization
Structural optimization methods have been developed and applied to a variety of engineering practices. This study aims to overcome technical challenges in applying design and topology optimization techniques to large-scale structural systems with uncertainties. The specific goals of this …
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Reliability analyses for foundation and soil reinforcement applications
… approaches. This thesis focuses on the reliability analysis for selected topics including pile foundations, mechanically stabilized earth (MSE) walls and soil nail walls. The lognormal distribution is widely used to represent geotechnical parameters, such as pile resistance model bias, …
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A Probabilistic Decision Support System for a Performance-Based Design of Infrastructures
… utilities in the decision analysis process. In order to address the identified knowledge gap, a three-phase modular decision analysis methodology is proposed. Module one uses a formal preference assessment methodology (i.e., utility function/indifference curve) for assessing decision maker …
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Continuum Mechanics Modelling of Corrugated Board
… a number of portion proposals, each aiming on a method for a specific subproblem of the numerical modelling of time to failure. Firstly, the focus is the problem of finite deformation hygro-elasticity. The assumption of kinematics is based on an additive split of the stretch in an elastic part …
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Performance-based evaluation of unbound aggregates affecting mechanistic response and performance of flexible pavements
… This thesis is organized into three sections. First, statistical and generic algorithm (GA) based models are developed to estimate MR and shear strength properties for performance prediction using aggregate properties. The MR sensitivities are assessed using both Monte Carlo type simulation and …
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System reliability analysis of structures subjected to fatigue induced sequential failures using evolutionary algorithms
… leading to system collapse. With proper system reliability analysis, such cascading failures could be foreseen by stakeholders. To help make better risk-informed decisions, system reliability methods have been developed to analyze general structures subjected to the risk of cascading …
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Development and application of new system reliability analysis methods for complex infrastructure systems
… Despite significant advances in theories on reliability analysis of individual components and their adoption in practice, the critical knowledge and quantitative methods for reliability assessments of complex system events remain elusive, leading to unknown accuracies in the risk assessment. …