Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High Temperature Effect On Resistance Of Timber Structures ; Aukštos temperatūros poveikis medinių konstrukcijų laikomajai galiai
The present dissertation and its main subjects inquires into the pine and oak timber strength property changes-temperature relations. It also explores the behaviour of slender timber elements in axial compression at higher temperatures; and the comparative analysis of obtained results. The work seeks to accomplish the following major tasks: to obtain test data about the influence of high temperature on the properties of different natural – pine and oak – timber; to investigate the behaviour of slender timber elements under axial compression exposed to fire. Taking into account the investigated real fire effect to correct accordingly the existing in LST EN 1995-1-2 procedure for the fire resistance calculation of timber slender elements in compression. The dissertation consists of an introduction, five chapters, general conclusions, a list of references, a list of author’s publications on the dissertation subject, and 2 Annexes. Chapter 1 provides a literature review. It focuses on the publications inquiring into the loss of strength properties by timber at higher temperatures, the fire resistance of timber structures in compression. The chapter ends with the formulation of conclusions and the adjustment of research tasks. Chapter 2 offers the methodology of the research on strength properties of timber at higher temperatures, and the schemes of the developed testing equipment. Chapter 3 presents the procedure of the research on the behaviour of slender timber elements in axial compression under fire, and the schemes of testing equipment developed for this particular purpose. Сhapter 4 presents the analysis of test results of influence on the strength of timber exposed to fire, and a comparison between them and findings of the authors of analogous researches. Сhapter 5 presents the comparative analysis of test results of the behaviour of slender timber elements in axial compression under fire, and results of relevant fire resistance calculations carried out with the application of analytical methods and numeric modelling of temperature distribution in cross-sections by finite elements.
High Temperature Effect On Resistance Of Timber Structures ; Aukštos temperatūros poveikis medinių konstrukcijų laikomajai galiai
The present dissertation and its main subjects inquires into the pine and oak timber strength property changes-temperature relations. It also explores the behaviour of slender timber elements in axial compression at higher temperatures; and the comparative analysis of obtained results. The work seeks to accomplish the following major tasks: to obtain test data about the influence of high temperature on the properties of different natural – pine and oak – timber; to investigate the behaviour of slender timber elements under axial compression exposed to fire. Taking into account the investigated real fire effect to correct accordingly the existing in LST EN 1995-1-2 procedure for the fire resistance calculation of timber slender elements in compression. The dissertation consists of an introduction, five chapters, general conclusions, a list of references, a list of author’s publications on the dissertation subject, and 2 Annexes. Chapter 1 provides a literature review. It focuses on the publications inquiring into the loss of strength properties by timber at higher temperatures, the fire resistance of timber structures in compression. The chapter ends with the formulation of conclusions and the adjustment of research tasks. Chapter 2 offers the methodology of the research on strength properties of timber at higher temperatures, and the schemes of the developed testing equipment. Chapter 3 presents the procedure of the research on the behaviour of slender timber elements in axial compression under fire, and the schemes of testing equipment developed for this particular purpose. Сhapter 4 presents the analysis of test results of influence on the strength of timber exposed to fire, and a comparison between them and findings of the authors of analogous researches. Сhapter 5 presents the comparative analysis of test results of the behaviour of slender timber elements in axial compression under fire, and results of relevant fire resistance calculations carried out with the application of analytical methods and numeric modelling of temperature distribution in cross-sections by finite elements.
High Temperature Effect On Resistance Of Timber Structures ; Aukštos temperatūros poveikis medinių konstrukcijų laikomajai galiai
Griškevičius, Mečislavas (Autor:in)
12.11.2010
Hochschulschrift
Elektronische Ressource
Lithuanian , Englisch
fire , crosscut , coefficient , strength , effect
DDC:
690