Impact of the wind load probability distribution and connection types on the reliability index of truss towers

Mochocki, Wojciech; Obara, Paulina; Radoń, Urszula

doi:10.15632/jtam-pl/118525

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…The reliability model for this structure is a serial system. It should be noted that for such a system, failure of one element is equivalent to failure of the whole structure (Mochocki, Obara, and Radoń 2020). In previous studies, the evaluation of structural failure in single elements is an important area of research.…”

Section: Methodsmentioning

confidence: 99%

Reliability of simple space truss structure

Sitompul

Pariatmono²

2022

astonjadro

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<p>Structural analysis has been widely applied in civil engineering. This analysis based on probability theory. Structural analysis was carried out to calculate the probability of failure and reliability of the structure. There are many cases of construction failure caused by uncertain environmental and human activities, including improper load in the external design process. In the process of designing a structure in Indonesia, complicated analysis is rarely carried out because of the complexity and impracticality of the analysis. Engineers and developers need to understand the behavior of the space truss structure and procedures in structural reliability analysis, Therefore it is necessary to simplify the structure in the analysis of the structure. This paper has carried out a structural reliability analysis using simple space truss modeling to understand its structural behavior and the principles of structural analysis under indeterministic load with simplified methods to make it more practical. A comparison of struktural analysis was carried out on 3 methods of structural analysis, manual calculation, ETABS v9.7.4, and MStower V6.20.1.11. The results of the three methods have the same value so that the structural analysis using MStower is reliable. In the loading approach, the load that is developed into a population of possible loads that can occur. Monte Carlo simulation is used by generate a sample of the load population that can represent the number of possible loads so as to reduce the number of analyzes. Random value generation methods were compared to get a more effective and practical method. The failure criteria are determined to obtain the limit state function of the structure so that the probability of failure and the reliability of the structure can be calculated. In this study, the limit state function was obtained in compression member with a 67% probability of failure and 33% reliability of the structure.</p>

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Section: Methodsmentioning

confidence: 99%

Reliability of simple space truss structure

Sitompul

Pariatmono²

2022

astonjadro

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“…Numerical methods for determining the probability of failure and reliability indicators have been the subject of many publications in the field of various structure analyses. The articles (Mochocki and Radoń, 2019;Mochocki et al, 2020) concern the reliability analysis of lattice towers using a systems approach. The articles analyzed the impact of the wind load probability distribution and the type of connections in towers on their reliability.…”

Section: Reliability Based Design Optimization (Rbdo)mentioning

confidence: 99%

The comparison of robust and reliability based design optimization

Zabojszcza,

Radoń

2024

Journal of Theoretical and Applied Mechanics

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This article compares two optimization methods considering random variations in design parameters. One is reliability-based design optimization, which depends on the availability of the joint probability density function. A more practical alternative is robust optimization, which does not require the estimation of failure probability. It accounts for the random response of the structure through definitions of objective functions and constraints, incorporating mean values and response variances. An important element of the algorithm involves approximating unknown responses of the structures and employing efficient statistical moment estimation methods. The kriging method was used in this paper. Additionally, the article evaluates two experimental plan techniques: the classical random sampling plan and the OLH plan.

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“…This method is widely applied in numerous elds of science and engineering, e.g. in hydrology for the assessment of the probability of the occurrence of ood (Kuźmiński et al 2020), in construction engineering to assess quay loads (Guo et al 2022), and in the analysis of strength of systems and their elements (Mochocki et al 2020). The fast development of this branch of the probability theory coincides with the increasing interest in climate research, in particular precipitation characteristics (Goswami et al 2018;Merrikhpour et al 2021).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Groundwater drought risk assessment model as a tool to support sustainable water resources management

Kubicz

Karczewski

2023

Preprint

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As a result of increasing water deficits, low nutritional safety, and environmental degradation, the need to implement sustainable water usage and improve current water management practices became a priority. The changes in the hydroclimatic regimen towards more intense yet less frequent rainfall that have been observed in recent years increase the risk of drought. This leads to the need to mitigate this risk and to reduce the effects of repeated, consecutive periods of water shortage. The objective of article was to present a method for assessing the risk of occurrence of groundwater drought based on the distributions of extreme values of groundwater levels. This goal was achieved, which was shown on the examples of selected observation points of the groundwater level in the catchment of the Odra River. Based on the obtained results, it was demonstrated that the application of the distributions of extreme groundwater level values to assess the risk of occurrence of groundwater drought is an effective tool that supports sustainable water management. It offers the possibility to assess the risk of groundwater drought, which usually leads to water deficits in the affected areas, in a fast and simple way. The risk calculated in this way may be used to classify the areas in terms of the level of risk of the occurrence of groundwater drought. The method presented in this paper may also be used to assess the influence of various factors, including the methods of catchment management, climate changes, on mitigating the risk of occurrence of groundwater droughts.

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Impact of the wind load probability distribution and connection types on the reliability index of truss towers

Cited by 7 publications

References 9 publications

Reliability of simple space truss structure

Reliability of simple space truss structure

The comparison of robust and reliability based design optimization

Groundwater drought risk assessment model as a tool to support sustainable water resources management

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