학술논문
Návrh a výpočet membránové konstrukce zastřešení stadionu
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Abstract
Tato práce se zabývá problematikou návrhu a výpočtu membránové konstrukce zastřešení stadionu. Jedná se o komplexní inženýrský problém, který v sobě zahrnuje mnoho dílčích složek: hledání počátečního tvaru membrány, staticky i architektonicky vhodné uspořádání systému nosných lan, hospodárné řešení okrajových podmínek (uložení) konstrukce. Všechny složky návrhu se ovlivňují a nelze je řešit bez vzájemné koordinace. Vždy velice záleží na zkušenostech a citu inženýra, jenž takovouto konstrukci navrhuje. Úlohu již není možné řešit dle teorie I.řádu. Rovnováha sil na nedeformované konstrukci, jenž u mnoha projektovaných konstrukcí dává uspokojivé výsledky, by neodpovídala realitě. Je proto nutné uvažovat rovnováhu sil na deformované konstrukci dle teorie velkých deformací. Práce byla zadána s ohledem na záměr firem Ing. Software Dlubal s.r.o. a FEM consulting s.r.o., které spolupracují na vývoji software RFEM, doplnit tento programový systém o modul MEMBRÁNA pro hledání výchozích tvarů membránových konstrukcí. Tato práce má být příspěvkem k vytvoření tohoto modulu.
This diploma thesis deals with problem of design and calculation of membrane structure of stadium roof. This is a complex engineering problem, which includes many partial problems: finding of initial form of membrane, statically and architecturally suitable arrangement of catenaries, economical solution of boundary conditions (foundations). All components affect each other and cannot be dealt without mutual coordination. It always greatly depends on the experience and intuition of engineer who design such structure. Task which cannot be resolved according to the theory of the first order. Equilibrium forces on the deformed structure, which in many projected structures gives satisfactory results, did not correspond to reality. It is therefore necessary to consider equilibrium of forces on the deformed structure according to the theory of large deformations. Diploma thesis was entered with regard to the intention of the companies Ing. Software Dlubal s.r.o. and FEM consulting s.r.o., working together to develop software RFEM. These companies plan to complement this program system with a module MEMBRANE for searching of initial shapes of membrane structures. This work is a contribution to the creation of this module.
This diploma thesis deals with problem of design and calculation of membrane structure of stadium roof. This is a complex engineering problem, which includes many partial problems: finding of initial form of membrane, statically and architecturally suitable arrangement of catenaries, economical solution of boundary conditions (foundations). All components affect each other and cannot be dealt without mutual coordination. It always greatly depends on the experience and intuition of engineer who design such structure. Task which cannot be resolved according to the theory of the first order. Equilibrium forces on the deformed structure, which in many projected structures gives satisfactory results, did not correspond to reality. It is therefore necessary to consider equilibrium of forces on the deformed structure according to the theory of large deformations. Diploma thesis was entered with regard to the intention of the companies Ing. Software Dlubal s.r.o. and FEM consulting s.r.o., working together to develop software RFEM. These companies plan to complement this program system with a module MEMBRANE for searching of initial shapes of membrane structures. This work is a contribution to the creation of this module.