FINITE ELEMENT STUDIES OF PRE-CRACKED REINFORCED CONCRETE (RC) BEAMS WITH OPENINGS STRENGTHENED BY STEEL PLATE

Bashir H. Osman, Ahmed Abdalla Eltayeb, Mahir M. hamad

Abstract


In this study, a repairing of preloaded RC beams with openings strengthened with steel plate was studied by using finite
element package ANSYS14.5. To ensure that the elements, convergence criteria, and material properties are adequate
to model the behavior of the RC beam and to ensure that the simulation process is correct, the FE ANSYS was calibrated
with published experimental data. The effect of pre-damage level and loading mechanism were considered as main
parameters. Furthermore, birth and death technique was used to model the cracks before strengthening stage. In this
technique, loading was first applied till the objective cracking, followed by steel plate application, and then the load
was continued to failure. The result showed that pre-damage levels and the steel plate strengthening have a great effect
on the failure mode and ultimate load of RC beam. In addition, the results showed good agreement with those obtained
from published experimental tests. Based on FE using ANSYS an ACI guideline, an analytical equation for predicting
the shear capacity of RC beams with openings strengthened by steel plate under sustained load was then proposed.

Keywords


Pre-cracked; Strengthening; RC beam; openings; Steel plate; ANSYS14.5

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References


. ACI-318 2005. Building code requirement for

structural concrete and Commentary, American

Concrete Institute.

. Salamy,M.R.,Kobayashi,H.,Unjoh, Sh.,Kosa, K.

and Nishioka, T., 2005. A code-based

comparative study on r.c deep beams behavior

with shear span to depth ratio between 0.5 and

5", 8th symposium on ductility design method

for bridges, Tokyo, Feb. 1-2.

. Jumaat, M.Z. and Alam, M.A., 2007. Plate

bonded strengthened RC beams with end and

intermediate anchors. International Journal of

Engineering and Technology, 4(2), pp.185-193.

. Jumaat, M.Z. and Alam, M.A., 2009.

Strengthening of RC beams using externally

bonded plates and anchorages. Australian Journal

of Basic and Applied Sciences, 3(3), pp.2207-

. Tanaka, Y., Murakoshi, J. and Yoshida, E., 2010.

Load-carrying capacity of reinforced concrete

beams with adhesively bonded steel plates. Public

Works Research Institute, Japan.

. Aykac, S., Kalkan, I., Aykac, B., Karahan, S. and

Kayar, S., 2012. Strengthening and repair of

reinforced concrete beams using external steel

plates. Journal of Structural Engineering, 139(6),

pp.929-939.

. Nie, J., Wang, Y. and Cai, C.S., 2010.

Experimental research on fatigue behavior of RC

beams strengthened with steel plate-concrete

composite technique. Journal of Structural

Engineering, 137(7), pp.772-781.

. Sharif, A., Al-Sulaimani, B. G.J., I.A., M. H.

Baluch and M. Husain. 1995. Strengthening of

shear-damaged RC beams by external bonding of

steel plates. Magazine of Concrete Research

(173): 329–334.

. Adhikary, B. B., H. Mutsuyoshi and M. Sano

, Shear strengthening of reinforced concrete

beams using steel plates bonded on beam web:

experiments and analysis, Construction and

Building materials 14(5): 237-244.

. Barnes, R. A. and G. C. Mays. 2006.

Strengthening of reinforced concrete beams in

shear by the use of externally bonded steel plates:

Part 1–Experimental programme. Construction

and Building Materials 20(6): 396-402.

. Ahmed, M., O. DJ and B. MA. 2000. Retrofitting

reinforced concrete beams by bolting steel plates

to their sides. Part 1: behaviour and experiments.

Struct. Eng. Mech. 10(3): 211-226.

. Bashir H. Osman, Erjun Wu, Bohai Ji, & Suhaib

S. Abdulhameed 2017. "hear Behavior of

Reinforced Concrete (RC) Beams with Circular

Web Openings without Additional Shear

Reinforcement. KSCE Journal of Civil

Engineering, vol.21, No.1, pp.296-306.

. Osman, B.H., Wu, E., Bohai, J. and Abdallah, M.,

, Repair technique of pre-cracked reinforced

concrete (RC) beams with transverse openings

strengthened with steel plate under sustained

load. Journal of Adhesion Science and

Technology, 31(21), pp.2360-2379.

. Mansur MA & Alwist WA. 1984. Reinforced

fibre concrete deep beams with web openings. Int.

J. Cement Compos. Lightweight Concr., vol.6,

No.4, pp.263–71. [16] Campione, G. & G.

Minafò. 2012. Behaviour of concrete deep beams

with openings and low shear span-to-depth ratio”.

Engineering Structures, vol. 41, pp.294- 306.

. Shanmugamt NE & Swaddiwudhipong S. 1988.

Strength of fibre reinforced concrete beams

containing openings. Int. J. Cement Compos.

Lightweight Concr. Vol.10, No.1, pp. 53-60.

. Oehlers, D. J., M. Ahmed, N. T. Nguyen and M.

A. Bradford 2000. Retrofitting reinforced

concrete beams by bolting steel plates to their

sides-Part 2: Transverse interaction and rigid

plastic design." Structural Engineering and

Mechanics 10(3): 227-243.

. Mansur, M. 1998. Effect of openings on the

behaviour and strength of RC beams in shear.

Cement and concrete composites, vol.20, No.6,

pp.477- 486.

. Mansur, M. A. 2006. Design of Reinforced

Concrete Beams with Web Openings.

Proceedings of the 6th Asi-pacific Structural

Engineering and Construction Conference

(APSEC 2006), Kuala Lumpur, Malaysia, 5-6

September 2006.

. Kachlakev, D., T. Miller, S. Yim, K. Chansawat

and T. Potisuk. 2001. Finite element modeling of

concrete structures strengthened with FRP

laminates." Final report, SPR 316.

. Kishi, N., Y. Kurihashi and H. Mikami 2012.

Load-Carrying Behavior of Pre-Cracked RC

Beams Reinforced With Pretensioned AFRP

Sheet. 6th international conference on FRP

composite in civil engineering.

. Gere, J. M. and S. P. Timosshenko 2004.

Mechanics of materials, Library of Congress

Control Number: 2003113085

. Ray, T. 2013. Modeling of Multidimensional

Nonlinear Elastic and Inelastic Structural

Systems. PhD, University at Buffalo, SUNY.

. Gomes, A. and J. Appleton 1999. Strengthening

design of concrete beams by addition of steel

plates. Proceedings of the International

Conference on Enhancement and Promotion of

Computational Methods in Engineering and

Science (EPMESC VII). Edited by E. Arantes e

Oliveira and J. Bento. Elsevier, Macau


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