Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening

Recent trends of structural mechanics applications in finite element analysis demonstrate an increasing demand for efficient analysis tools. This thesis presents a probabilistic analysis approach applied in finite element analysis for modelling prestressed inverted T-beams with web openings structur...

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Main Author:	Tie, Ming
Format:	Thesis
Language:	English
Published:	2021
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/37056/1/05.FINITE%20ELEMENT%20MODELING%20AND%20PROBABILISTIC%20ANALYSIS%20OF%20PRESTRESSED%20INVERTED%20T-BEAM%20WITH%20WEB%20OPENINGS.pdf
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spelling	my-ump-ir.370562023-11-01T09:00:45Z Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening 2021-12 Tie, Ming TA Engineering (General). Civil engineering (General) Recent trends of structural mechanics applications in finite element analysis demonstrate an increasing demand for efficient analysis tools. This thesis presents a probabilistic analysis approach applied in finite element analysis for modelling prestressed inverted T-beams with web openings structure used in building service system (mechanical, electrical, communications, and plumbing). Prestressed concrete structures are commonly designed to satisfy criteria of serviceability and safety. In order to ensure the serviceability requirement it is necessary to predict the response of these structures under service loads. However, calculation of deflections of prestressed concrete structures is complicated by several factors, including shrinkage and creep of concrete, relaxation of prestressing reinforcement and cracking. Due to the inherent uncertainties in nature, it is difficult to determine the related parameters precisely. Material and geometric properties of the cracked prestressed concrete structure and load systems possess different degrees of uncertainties. Uncertainties of material properties could arise because of limited site investigations and limited material laboratory test and in accurate formula for correlating various material parameters. Uncertainties of geometric properties could be due to variations during fabrication and erection of the structure. The experimental program reported in this study was in the literature review about four prestressed inverted T-beams with circular web openings tested to failure to evaluate the openings' effect on various beam behaviours. Using ANSYS, finite element models were developed to simulate beam deflection behaviour. Comparison of analytical results with the available experimental results for load-deflection relationships showed good agreement between both results. Probabilistic analysis methodology could predict the response (i.e. deflection, stress, strain etc) due to various combination of input variables (i.e. opening radius, Poisson`s ratio, modulus of elasticity, etc). Probabilistic methodology applied in finite element analysis provides an alternative ways to structural analysis of preststressed inverted T-beams with web openings to achieve a robust and reliable design in a more efficient way. In this thesis, Monte Carlo simulation and Latin Hypercube simulation (LHS) was used to analyze the effect of parameter uncertainty for the prestressed inverted T-beams with web openings. From the analysis results, it was observed that the changes in prestressing force, ultimate tensile strength of prestressing steel, elastic modulus of prestressing steel and beam width tend to be the most influencing parameters, which need to be tightly controlled. As a result, from deterministic analysis and probabilistic analysis, it was found that probabilistic analysis tends to be closer to reality than deterministic methods and gives a way of designing for quality. 2021-12 Thesis http://umpir.ump.edu.my/id/eprint/37056/ http://umpir.ump.edu.my/id/eprint/37056/1/05.FINITE%20ELEMENT%20MODELING%20AND%20PROBABILISTIC%20ANALYSIS%20OF%20PRESTRESSED%20INVERTED%20T-BEAM%20WITH%20WEB%20OPENINGS.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Civil Engineering & Earth Resources Cheng, Hock Tian
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
advisor	Cheng, Hock Tian
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Tie, Ming Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
description	Recent trends of structural mechanics applications in finite element analysis demonstrate an increasing demand for efficient analysis tools. This thesis presents a probabilistic analysis approach applied in finite element analysis for modelling prestressed inverted T-beams with web openings structure used in building service system (mechanical, electrical, communications, and plumbing). Prestressed concrete structures are commonly designed to satisfy criteria of serviceability and safety. In order to ensure the serviceability requirement it is necessary to predict the response of these structures under service loads. However, calculation of deflections of prestressed concrete structures is complicated by several factors, including shrinkage and creep of concrete, relaxation of prestressing reinforcement and cracking. Due to the inherent uncertainties in nature, it is difficult to determine the related parameters precisely. Material and geometric properties of the cracked prestressed concrete structure and load systems possess different degrees of uncertainties. Uncertainties of material properties could arise because of limited site investigations and limited material laboratory test and in accurate formula for correlating various material parameters. Uncertainties of geometric properties could be due to variations during fabrication and erection of the structure. The experimental program reported in this study was in the literature review about four prestressed inverted T-beams with circular web openings tested to failure to evaluate the openings' effect on various beam behaviours. Using ANSYS, finite element models were developed to simulate beam deflection behaviour. Comparison of analytical results with the available experimental results for load-deflection relationships showed good agreement between both results. Probabilistic analysis methodology could predict the response (i.e. deflection, stress, strain etc) due to various combination of input variables (i.e. opening radius, Poisson`s ratio, modulus of elasticity, etc). Probabilistic methodology applied in finite element analysis provides an alternative ways to structural analysis of preststressed inverted T-beams with web openings to achieve a robust and reliable design in a more efficient way. In this thesis, Monte Carlo simulation and Latin Hypercube simulation (LHS) was used to analyze the effect of parameter uncertainty for the prestressed inverted T-beams with web openings. From the analysis results, it was observed that the changes in prestressing force, ultimate tensile strength of prestressing steel, elastic modulus of prestressing steel and beam width tend to be the most influencing parameters, which need to be tightly controlled. As a result, from deterministic analysis and probabilistic analysis, it was found that probabilistic analysis tends to be closer to reality than deterministic methods and gives a way of designing for quality.
format	Thesis
qualification_level	Master's degree
author	Tie, Ming
author_facet	Tie, Ming
author_sort	Tie, Ming
title	Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
title_short	Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
title_full	Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
title_fullStr	Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
title_full_unstemmed	Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening
title_sort	finite element modeling and probabilistics analysis of prestressed inversted t-beam with web opening
granting_institution	Universiti Malaysia Pahang
granting_department	Faculty of Civil Engineering & Earth Resources
publishDate	2021
url	http://umpir.ump.edu.my/id/eprint/37056/1/05.FINITE%20ELEMENT%20MODELING%20AND%20PROBABILISTIC%20ANALYSIS%20OF%20PRESTRESSED%20INVERTED%20T-BEAM%20WITH%20WEB%20OPENINGS.pdf
_version_	1783732259266756608

Finite element modeling and probabilistics analysis of prestressed inversted T-beam with web opening

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