CeSTaR 2

The software was developed with a financial support from TA ČR

CeSTaR 2 - Reducing material demands and enhancing structural capacity of multi-spiral reinforced concrete columns - advanced simulation and experimental validation ()

CeSTaR 2 – 1st call of the DELTA 2* program of TA ČR
Project ID: TM01000059
Duration: 2020 – 2022
Partners: Červenka Consulting s.r.o. - Ing. Radomír Pukl, CSc. , CTU Prague - Prof. Ing. Zdeněk Bittnar, DrSc., National Taiwan University of Science and Technology - Prof. Yu-Chen Ou Ph.D., Taiwan, National Center for Research on Earthquake Engineering, National Applied Research Laboratories, Ruentex Engineering & Construction Co., Ltd, Taiwan

Objectives of the project
Extension of ATENA NLFEM program system for simulation of civil engineering structures and structural members made from non-traditional concrete under complex loading conditions. Software for simulating the behavior of reinforced concrete columns with advanced multi-spiral reinforcement. Design of experiment using developed software.Software validation based on experiments. Optimized design of column transverse reinforcement in terms of cost, emissions and load response requirements. Simplified relationship design inspired by Model Code 2010 for multi-spiral reinforcement design.
Using two-speed mixing technology to reduce cement consumption in column. Recommendations for calculation of interaction diagram of columns with multi-spiral reinforcement, comparison with experiment.

Cíle projektu
Rozšíření možností programového systému ATENA pro simulaci konstrukcí a konstrukčních prvků z netradičních betonů a při složitém zatížení. Software pro simulaci chování železobetonových sloupů s pokročilou multi-spirální výztuží, využívající kombinaci měkké a předpínací výztuže. Návrh experimentu pomocí vyvinutého software. Verifikace software na základě provedených experimentů. Optimalizovaný návrh příčné výztuže sloupu z hlediska ceny, emisí a požadavků na odezvu při zatížení. Návrh zjednodušených vztahů inspirovaný Model Code 2010 pro návrh sloupů s multi-spirální výztuží. Využití dvourychlostního míchání betonové směsi pro snížení spotřeby cementu v konstrukci sloupů. Doporučení pro výpočet interakčního diagramu sloupů s multi-spirální výztuží, porovnání s experimentem.

Presentation from IABSE Ghent 2021 online conference on modelling of spiral reinforcement.
Video
PDF

The Application of Five-Spiral hoop to Bridge Columns by Partially Unbonded and Non-prestressed Steel Strands.
Video

Participation at blind prediction competition UC Berkeley.
Video

ABC Conference Extended Abstract 3Dprinting.
PDF

Computer simulation and experimental validation - complex service for flexible and efficient design of pre-cast concrete columns with innovative multi-spiral reinforcement: watch the video here.

As one of the project results, CeSTaR-2 ATENA module was developed within the CeSTaR-2 project, and it is a part of the ATENA 2023 version. It is currently implemented into the commercial release. CESTAR2 ATENA 2023 User's Manual is available here and Example & Validation Manual here.

If you are interested in receiving the actual pre-release of the ATENA 2023 program, and in participating in Beta testing, please submit your request using the following FORM.

You will be contacted by our staff to discuss the possibilities of participating in the Beta-testing process.

Subscribe for ATENA 2023 Beta Version

Publications

REHOUNEK, L., CERVENKA, J., PUKL, R., Analysis for Optimization of Spiral Reinforcement in Pre-Fabricated Bridge Columns, IABSE Congress Ghent 2021 - Structural Engineering for Future Societal Needs, Virtual Sep. 22 – 24., Scopus eid=2-s2.0-85119037644, pp 885 - 892

Fig.1: Column testing in MATS loading machine at NCREE Taipei, Taiwan.

Fig.2: Results from column ATENA analysis - Principal compressive stresses.  

Fig.3: Results from ATENA analysis - Column reinforcement stress.