EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS
In the construction of modern buildings, a network of pipes and ducts is necessary to accommodate essential services like water supply, sewage, air-conditioning, electricity, telephone, and computer network. Passing these services vertically required creating openings in slab (Flanges of T-Beams) a...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2010-04-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2517 |
| _version_ | 1797301157997051904 |
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| author | Ali H. Aziz Awadh E. Ajeel |
| author_facet | Ali H. Aziz Awadh E. Ajeel |
| author_sort | Ali H. Aziz |
| collection | DOAJ |
| description |
In the construction of modern buildings, a network of pipes and ducts is necessary to accommodate essential services like water supply, sewage, air-conditioning, electricity, telephone, and computer network. Passing these services vertically required creating openings in slab (Flanges of T-Beams) after or before construction.
New researches show that the concrete flanges provide a certain level of shear resistance above a certain width. Therefore, due to existing of these openings or cold joints in slab (Flange) and abrupt changes in the sectional configuration, opening corners are subject to high stress concentration that may lead to reduction in stiffness of the T-Beam and produced cracking and excessive deflection.
In the present research, shear behavior of reinforced concrete T-Beams which contains vertical opening (Flange openings) or cold joints at the flanges are studied as well as the effect of openings or cold joints locations. Eight beams were tested, one of which were constructed without any openings or cold joints (reference beam), while, the others were constructed with openings or cold joints in different locations.
Experimental results show that the presence of flange openings reduce the shear capacity about (22% to 32%) for beams containing one opening and about (17%-39%) for beams containing two openings. For beams containing cold joints, the shear capacity decreased about (27%) in comparison with reference beam.
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| first_indexed | 2024-03-07T23:17:24Z |
| format | Article |
| id | doaj.art-dafe4a5e18bd4af2a2d4c75707dcdea3 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-07T23:17:24Z |
| publishDate | 2010-04-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-dafe4a5e18bd4af2a2d4c75707dcdea32024-02-21T09:49:00ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392010-04-01160110.31026/j.eng.2010.01.11EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMSAli H. AzizAwadh E. Ajeel In the construction of modern buildings, a network of pipes and ducts is necessary to accommodate essential services like water supply, sewage, air-conditioning, electricity, telephone, and computer network. Passing these services vertically required creating openings in slab (Flanges of T-Beams) after or before construction. New researches show that the concrete flanges provide a certain level of shear resistance above a certain width. Therefore, due to existing of these openings or cold joints in slab (Flange) and abrupt changes in the sectional configuration, opening corners are subject to high stress concentration that may lead to reduction in stiffness of the T-Beam and produced cracking and excessive deflection. In the present research, shear behavior of reinforced concrete T-Beams which contains vertical opening (Flange openings) or cold joints at the flanges are studied as well as the effect of openings or cold joints locations. Eight beams were tested, one of which were constructed without any openings or cold joints (reference beam), while, the others were constructed with openings or cold joints in different locations. Experimental results show that the presence of flange openings reduce the shear capacity about (22% to 32%) for beams containing one opening and about (17%-39%) for beams containing two openings. For beams containing cold joints, the shear capacity decreased about (27%) in comparison with reference beam. https://joe.uobaghdad.edu.iq/index.php/main/article/view/2517T-Beam, Flange, Opening, Cold joints, Shear, Slab, Concrete |
| spellingShingle | Ali H. Aziz Awadh E. Ajeel EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS Journal of Engineering T-Beam, Flange, Opening, Cold joints, Shear, Slab, Concrete |
| title | EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS |
| title_full | EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS |
| title_fullStr | EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS |
| title_full_unstemmed | EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS |
| title_short | EFFECT OF EXISTING FLANGE OPENINGS AND COLD JOINTS ON STRENGTH OF RC T-BEAMS |
| title_sort | effect of existing flange openings and cold joints on strength of rc t beams |
| topic | T-Beam, Flange, Opening, Cold joints, Shear, Slab, Concrete |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2517 |
| work_keys_str_mv | AT alihaziz effectofexistingflangeopeningsandcoldjointsonstrengthofrctbeams AT awadheajeel effectofexistingflangeopeningsandcoldjointsonstrengthofrctbeams |