ESA PT 5.0, Analýza a dimenzování betonových konstrukcí

ESA PT 5.0, Analysis and proportioning of concrete structures

článek ve sborníku ve WoS nebo Scopus

čeština

Příspěvek je komentovaným výčtem dostupných funkcí a vlastností programu pro statickou analýzu a dimenzování betonových konstrukcí včetně ukázek řešených konstrukcí. Je vysvětleno nastavení parametrů výpočtu, jsou ukázány možnosti výpočtu excentricit, vzpěrných délek, štíhlostí na sloupech a redukce vnitřních sil na nosnících. Program umožňuje návrh celkové nutné výztuže nebo přídavné výztuže nutné k předpokládané výztuži. Je možné zadání skutečné výztuže na úrovni jednotlivých výztužných vložek s využitím připravených šablon v otevřené databázi. Šablony vyztužení průřezu jsou nezávislé na normě, projektu a na rozměrech průřezu. V deskách je možné zadat až deset vrstev výztuže do 2 nebo 3 různých směrů nezávisle pro každý povrch desky zvlášť. Posouzení spočívá ve vyšetření mezního stavu únosnosti, posouzení šířky trhlin a výpočtu deformací s vlivem oslabení průřezu trhlinami

The design of concrete beams and columns for EC, NEN, DIN, CSN, STN, ONORM and BS are available in SCIA.ESA PT 5.0. A new object-driven approach for inputting the member concrete data has been developed. Because now the member is selected first and input is done on the selected member, the program can distinguish if the selected member is a beam or a column, and can automatically adapt the contents of the input dialogue to only show relevant properties to the user. The input of buckling lengths has become a separate item in the input and is direct accessible. The drawing of the internal forces can be done with the possibility to display shifted moment lines and reduced internal forces. The design of the reinforcement can be done taking into account user-defined reinforcement. Also crack proof, concrete check (as response on a specified load, or as a capacity calculation via an interaction diagram) and calculation of concrete deformations with respect to cracking are available. The design of concrete slabs for EC, NEN, DIN, CSN, STN, ONORM and BS is available in SCIA.ESA PT 5.0. For the input of slab concrete data the same philosophy has been used as for the input of member concrete data. The user has more freedom to input different parameters for top and bottom surface, and he can distinguish data (e.g. concrete cover, environmental class, reinforcement type) for main or stirrup reinforcement. There is the possibility to define up to 10 reinforcement layers to each surface. The design of reinforcement can be done taking into account user-defined reinforcement. The results are shown graphically according to reinforcement profiles and distances. Also crack proof and concrete deformations with respect to cracking are available. For the reinforcement design an entirely new solution has been developed based on templates which are prepared in advanced. There are different templates for stirrups and for longitudinal reinforcement. These templates are code independent and dimension independent meaning that the cross-sections are distinguished only by their shape and not by their material or dimensions. Therefore one reinforcement template can be used for all cross-sections of the same shape with arbitrary dimensions. To enhance the power of these templates there is the possibility to export or import them between projects, and it is possible to define reinforcement in completely arbitrary crosssections or to position the reinforcement in a general location of the arbitrary crosssection. There is a complete three-dimensional representation of the user input. There are also enhancements in SCIA.ESA PT 5.0 concerning the prestressed concrete. The input of the structure has been made more user friendly by adding libraries: there is a library with predefined pretensioned reinforcement, there is a borehole library with possible shapes and positions of strands in face steel anchorage plates, there is a strand pattern library with sectional strand patterns defined in dependence on the selected type of the face steel anchorage plate and a stressing bed library with stressing bed parameters including the data for the loss calculations. Also the construction stages analysis has been introduced to SCIA.ESA PT 5.0 with a new and improved graphical representation of the stages.

Analýza; dimenzování; beton; konstrukce

Analysis; proportioning; concrete; structures

ŠEVČÍK, P.; NAVRÁTIL, J.

1. 1. 2004

ČBS

Praha

80-903501-3-5

11. Betonářské dny - sborník příspěvků

2004

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219

222

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