BiaxialCrack is one of the most advance tool developed by STRUANG. It allows the biaxial bending calculation of complex and generic composite sections with crack width calculation. Starting from a section CAD file (.dxf) user can define the reinforcement, all the embedded profiles and the openings through the concrete. BiaxialCrack studies the section using finite elements by defining a high-level mesh. The software can be used for generic composite material, current version has been written mainly for composite concrete/steel and timber/concrete elements. For seismic design it provides Curvature and Ductility calculation. Once calculation process has been completed user can export all the relevant output in a detailed report (Microsoft Excel and Word document).
Main features• Analysis
BiaxialCrack is a software for the analysis and verification of a generic reinforced section or composite section with a very complex geometry.
BiaxialCrack is very practical for every day design work with simple and clear interface.
It allows different analysis for a generic reinforced cross-section which may comprises irregular geometry of the concrete area, openings with generic geometry, user defined arrangement of the reinforcement rebars and embedded steel profiles.
For standard sections, the cross-section geometry can be defined using the interface, while for complex sections directly from CAD drawing (.dxf file).
BiaxialCrack provides the standard materials but it always allows user defined matrials.
Uls and sls external forces can be defined on the interface or imported from external .txt file.
Method of analysis and design checks
BiaxialCrack allows user to define different materials stress-strain relationship. For steel the elastic plastic and the elastic plastic with hardening diagrams can be define. For the concrete both linear and parabolic elastic behaviour can defined. We are currently working on a new release which will consider the confinement behaviour of the concrete according to Eurocode 2.
BiaxialCrack stands out because it allows:
Crack width calculation has been implemented according to EN 1992-1-1:2004 7.3.4 and considering the following parameters:
Typical cases studies are represented by the analysis and verification of RC column, beam and bridge pier section.
BiaxialCrack provides several graphs and diagrams output using Matlab libraries.
Output information consists of:
The program can easly deal with complex reinforced section geometry throught CAD drawing.
The software establishes a consistent section analysis, stress verification and crack width control in accordance with Eurocode 2.
User can carried out a reinforcement optimisation even though it is not automatic defined on BiaxialCrack. Current version does not includes post tension which is under construction and will be released with next version.
Biaxialcrack has been developed in MATLAB by Ing. Alessandro Angelini (STRUANG).
Copyright : STRUANG Ing. Alessandro Angelini Monteleone di Spoleto ITALY.
BiaxialCrack software. New features for crack control, stress analysis and non linear analysis of moment curvature diagram.
BiaxialCrack - Descrizione breve in Italiano
il software BiaxialCrack nasce per analizzare sezioni complesse costituite da un materiale matrice (che può essere il calcestruzzo oppure il legno) ed uno o più materiali resistenti a trazione (barre in acciaio, barre in fibra e/o profili annegati).
Il calcolo presuppone sempre che le sezioni si mantengano piane e che sussista sempre la perfetta aderenza tra il materiale matrice ed il materiale resistente a trazione. Probabilmente uno dei pochi software, se non l'unico in circolazione, a considerare la presenza combinata di barre di diverso tipo. La versione attuale contempla due differenti materiali per le barre che avviene attraverso il calcolo di due coefficienti di omogeneizzazione per tutti i calcoli proposti.
Le caratteristiche principali del software sono:
We carried out some test on GFRP using BiaxialCrack.
Although fiberglass rebars are more resistant than steel ones, they have an elastic modulus about 5 times lower than that of steel. This has two immediate consequences: the first is that the stress in the concrete will be higher for a more limited compression area, the second concerns cracking (aesthetic reasons obviously).
The section with GFRP cracks 5 times more than that with steel rebars. Another important limitation is represented by the fact that the fiber rebars is not ductile like the steel one, so it has a lower ultimate strength.