Numerical investigation of AAC wall panels based on the damage plasticity constitutive law

• Autorzy: Taddei F. , Reindl L. , Park J. , Butenweg C. , Karadogan F.
• Konferencja: 5th International Conference on Autoclaved Aerated Concrete "Securing a sustainable future" to be held at Bydgoszcz to celebrate 60 years of AAC experience in Poland, Bydgoszcz, September 14-17, 2011
• Języki publikacji: EN

Abstrakty

EN

This paper gives a short overview on the Ytong Building System and discusses possible seismic verification concepts. Moreover it proposes three-dimensional finite element models for unreinforced and reinforced walls panels in aerated autoclaved concrete on the basis of the concrete damage plasticity constitutive law implemented into the FEM toolkit ABAQUS. The paper focuses on an unreinforced ten panel shear wall and on a reinforced four panel shear wall. For the latter, two different solutions are developed: in the first the reinforcement is directly embedded into the AAC mesh, while in the second grouted cores around the reinforcement bars are taken into account. The quasi-static loading condition was simulated using both static and dynamic implicit analysis, switching from the former to the latter at the occurrence of nonlinearities. The simulation results show that the AAC shear wall models can correctly represent the load-displacement responses as well as the cracking patterns and crack propagations. The concrete damage plasticity constitutive law allows for a proper representation of the cyclic behavior and the damage accumulation of AAC shear walls, which is very important for the performance-based design of structures under seismic loading. Further researches are recommended in order to improve the results and to investigate different combinations of applied axial load, aspect ratios and reinforcement details. The long term goal is the development of a feasible and powerful deformation based seismic verification procedure for the Ytong Building System.

Słowa kluczowe

EN

autoclaved aerated concrete; wall panell; Ytong; building system; seismic load; finite element model

PL

beton komórkowy; płyta ścienna; system budowlany; YTONG; obciążenie sejsmiczne; model elementów skończonych

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2011
• Tom: nr spec.
• Strony: 86--91
• Opis fizyczny: Bibliogr. 12 poz., il.

Twórcy

autor

Taddei F.

autor

Reindl L.

autor

Park J.

autor

Butenweg C.

autor

Karadogan F.

• RWTH Aachen, Structural Statics and Dynamics

Bibliografia

• [1] Tanner J.E. 2003. Design Provisions for Autoclaved Aerated Concrete (AAC) Structural Systems. PhD thesis. The University of Texas at Austin, USA.
• [2] Türk YTONG Sanayi A.Ş. Ytong Building System. Presentation, July 27th, 2009.
• [3] Kalkan E., Gülkan N., Yilmaz N., Çelebi M. 2009. Reassessment of Probabilistic Seismic Hazard in the Marmara Region. Bulletin of the Seismological Society of America, 99(4):2127-2146.
• [4] Rivera J.L.V. 2003. Development of R and Cd Factors for the Seismic Design of AAC Structures. PhD Thesis. The University of Texas at Austin, USA.
• [5] American Institute. 2005. Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary. Reported by ACI Committee 318, USA.
• [6] American Concrete Institute. 2009. Guide for Design and Construction with Autoclaved Aerated Concrete Panels. Reported by ACI Committee 523.
• [7] Comité Européen de Normalisation. 2004. Eurocode 8. Brussels.
• [8] Taddei F. 2010. Investigation of AAC vertical panel walls with the FE method based on a damage plasticity material model. Master thesis. Baustatik und Baudynamik, RWTH Aachen, Germany.
• [9] Argudo J.F. 2003. Evaluation and Synthesis of Experimental Data for Autoclaved Aerated Concrete. Master thesis. The University of Texas at Austin, USA.
• [10] ABAQUS 6.9 Documentation.
• [11] Abdou L. 2005. Experimental investigations of the joint-mortar behavior, Laboratoire de Mécanique, Université de Marne-La-Vallée.
• [12] Bathe K.J. 1996. Finite Element Procedures. Englewood Cliffs, NJ: Prentice Hall.