Strengthening of bent reinforced concrete beams with FRP composites - comparison of ULS design guidelines

• Autorzy: Ryngier K. , Derkowski W.

Warianty tytułu

PL

Wzmacnianie zginanych belek żelbetowych materiałami kompozytowymi FRP - porównanie procedur projektowania z uwagi na nośność

• Języki publikacji: EN

Abstrakty

EN

The paper raises an issue of designing flexural strengthening of reinforced concrete beams with FRP composite materials. Three different design approaches are presented. The conducted analysis consists of the determination of the load-bearing capacity of a beam, the assumption of loading and the evaluation of a capacity increase after strengthening the beam with a CFRP strip. Results are compared and justified and some conclusions are drawn. Furthermore, an author’s computer software for simple verification of ultimate limit state is briefly presented.

PL

Artykuł porusza kwestię projektowania wzmocnień belek żelbetowych na zginanie przy pomocy materiałów kompozytowych FRP. Opisano procedury projektowania i porównano wyniki obliczeń przykładowej belki według trzech różnych norm, ponadto przedstawiono autorski program komputerowy pozwalający na obliczenie wzmocnienia belki o przekroju prostokątnym taśmami CFRP.

Słowa kluczowe

EN

FRP composite material; CFRP strip; flexural strengthening; RC beams

PL

materiały kompozytowe FRP; taśma CFRP; wzmacnianie na zginanie; żelbet

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Budownictwo
• Rocznik: 2013
• Tom: R. 110, z. 2-B
• Strony: 111--124
• Opis fizyczny: Bibliogr. 12 poz., il., wykr., tab.

Twórcy

autor

Ryngier K.

• Institute for Building Materials and Structures, Civil Engineering Faculty, Cracow University of Technology

autor

Derkowski W.

• Institute for Building Materials and Structures, Civil Engineering Faculty, Cracow University of Technology

Bibliografia

• [N1] ACI 318-08, Building Code Requirements for Structural Concrete and Commentary, American Concrete Institute, USA 2008.
• [N2] ACI 440, 2R-08, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures, American Concrete Institute, USA 2008.
• [N3] CNR-DT 200/2004, Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Existing Structures, National Research Council, Rome, Italy 2004.
• [N4] fib Bulletin No. 14, Externally bonded FRP reinforcement for RC structures, Lausanne, Switzerland 2001.
• [N5] Model Code 2010, Final Draft, March 2010, Lausanne, Switzerland.
• [1] Balaguru P., Nanni A., Giancaspro J., FRP Composites for Reinforced and Prestressed Concrete Structures, Taylor&Francis, New York 2009.
• [2] Bencardino F., Rizzuti L., Spadea G., Strengthening/retrofitting of an RC structure with bonded CFRP laminates: reliability evaluation using different guidelines, FRPRCS-8 Conference Materials, Patras 2007.
• [3] Czaderski Ch., Fibre Composite Materials in Structural Engineering – Flexural strengthening of reinforced concrete – Swiss Code 166 and other codes/guidelines, ETH Lecture 101-0167-01L, EMPA, Switzerland 2012.
• [4] Derkowski W., Ultimate Limit State of the bent RC beams strengthened with FRP composites under static and fatigue load, 4th International Conference “Analytical Models and New Concepts in Concrete and Masonry Structures”, Kraków 2002.
• [5] Hollaway L.C., Teng J.G., Strengthening and Rehabilitation of Civil Infrastructures Using Fibre-Reinforced Polymer (FRP) Composites, CRC Press, 2008.
• [6] [6] Kotynia R., Kamińska M.E., Ductility and failure mode of RC Beams Strengthened for Flexure with CFRP, Experimental Researches of Concrete Members and Structures, Vol. 13, Wydawnictwo Katedry Budownictwa Betonowego Politechniki Łódzkiej, Łódz 2003 [in Polish].
• [7] S&P Reinforcements Technical Papers.