IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0921702
(2004-08-19)
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등록번호 |
US-7389620
(2008-06-24)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
28 인용 특허 :
6 |
초록
▼
Composite pan end connections for composite beam-joist construction are disclosed. Two versions of the composite pan can be fabricated on a standard break machine. A third version disclosed makes use of a standard steel stud. All three versions provide an economical, easily installed horizontal plat
Composite pan end connections for composite beam-joist construction are disclosed. Two versions of the composite pan can be fabricated on a standard break machine. A third version disclosed makes use of a standard steel stud. All three versions provide an economical, easily installed horizontal platform secured to the top chord seat angles of either conventional or composite open-web joists. In addition to economy in fabrication, and ease of use, the resulting rectangular shape of the concrete slab over the beam is structurally more efficient than heretofore obtainable.
대표청구항
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What is claimed is: 1. In a composite beam-joist system, comprising: (a) a substantially horizontally positioned beam structure support member having a top surface; (b) at least two open-web joists, said open-web joists being positioned a spaced distance apart and being substantially parallel to on
What is claimed is: 1. In a composite beam-joist system, comprising: (a) a substantially horizontally positioned beam structure support member having a top surface; (b) at least two open-web joists, said open-web joists being positioned a spaced distance apart and being substantially parallel to one another and perpendicular to said beam, each one of said open-web joists being comprised of a zigzag shaped iron rod connecting a top chord and a bottom chord, said top and bottom chords being positioned a spaced distance apart and substantially parallel to each other, each one of said top and bottom chords being comprised of a pair of opposed angle iron members affixed together by connection to apices in said zigzag shaped rod, said pair of opposed angle iron members forming said top chord for each open-web joist having a first end; (c) each of said open-web joists having a bearing end on at least one end, said bearing end being comprised of a pair of flange connected seat angles extending laterally from the respective first end of each one of said opposed angle iron members of said top chord so as to form a pair of U shaped channels at said bearing end, a front end of said bearing ends of each of said open-web joists being placed on a top surface of said beam; (d) corrugated decking being positioned on a top surface of said top chords of said open-web joists said corrugated decking including a plurality of flutes extending parallel to each other and to a longitudinal axis of said horizontally positioned beam structure support member, said corrugated decking having an edge parallel to the longitudinal axis of said horizontally positioned beam structure support member; and (e) one or more shear studs being affixed to said top surface of said beam adjacent said open-web joist bearing ends; the improvement comprising an end connection means disposed between said at least two open-web joists, (f) said end connection means including a composite pan, said composite pan formed from a substantially rectangular piece of material having a width approximately equal to the spaced distance between said at least two open-web joists and having a plurality of substantially rectangularly shaped segments including a horizontal top surface segment, a horizontal flange segment and a vertical panel segment disposed between, confluent with and substantially perpendicular to each of said horizontal top surface segment and horizontal flange segment, at least said vertical panel segment having no removal of material therefrom, that is, cut-out free, said horizontal top surface segment of said composite pan being positioned on and affixed to opposed top chord seat angles of adjacent open-web joists, said horizontal top surface of said composite pan extending from at least the edge of said corrugated decking to the respective first end of each of said pair of opposed angle iron members for each said open-web joist, such that said vertical panel is positioned at said respective first end of each of said pair of opposed angle iron members for each said open-web joist, said vertical panel extending downward a predetermined distance towards the top surface of said horizontally positioned beam structure support member such that said horizontal flange member is consequently positioned in a plane in close proximity and parallel to the top surface of said beam structure support member, whereby a substantially horizontal platform is formed between a respective adjacent pair of said open-web joists, the top surface of said beam, and the edge of said corrugated decking, so that when concrete is poured over said top surface of said beam, said composite pan, said bearing ends, said shear stud(s), and said corrugated decking, said beam is composite with a resulting concrete slab. 2. The end connection means for a composite beam-joist system according to claim 1 wherein said horizontal flange segment is formed so as to extend in the same direction as said horizontal top surface segment in relation to said vertical panel segment, whereby a substantially U shaped channel profile for said composite pan results. 3. The end connection means for a composite beam-joist system according to claim 2 wherein said composite pan is secured in position by affixing said corrugated decking to said composite pan and said remaining opposed sections of said top chord top seat angles. 4. The end connection means for a composite beam-joist system according to claim 1 wherein said horizontal flange segment is formed so as to extend in an opposite direction as said horizontal top surface segment in relation to said vertical panel segment, whereby a substantially Z shaped channel profile for said composite pan results. 5. The end connection means for a composite beam-joist system according to claim 4 wherein said composite pan is secured in position by affixing said corrugated decking to said composite pan and said remaining opposed sections of said top chord top seat angles. 6. The end connection means for a composite beam-joist system according to claim 2 wherein said composite pan is formed to include a second vertical panel segment and a second horizontal flange segment, said second vertical panel segment disposed between, confluent with and substantially perpendicular to each of said horizontal top surface segment, at the end thereof opposite the location of the other vertical panel, and the second horizontal flange segment, said second horizontal flange segment orientated in the direction of the other horizontal flange segment, whereby the fabricated composite pan has a profile of a pair of opposed U shaped channels affixed along the length of said horizontal top surface segment. 7. The end connection means for a composite beam-joist system according to claim 6 wherein said composite pan is fabricated from a standard steel stud. 8. The end connection for composite beam-joist systems according to claim 1 wherein said composite pan is fabricated in a substantially rectangularly shaped metal sheet having a left side and a right side, said left and right sides having panels extending downward a spaced distance from a top surface of said metal sheet, said left side downwardly extending panel having a shelf portion at its base extending laterally opposite to said top surface of said metal sheet, said shelf portion having a centrally located tab stop means for automatically positioning said shelf portion a set point over said beam, said composite pan being inserted by an operator lengthwise between said top and bottom seat angles of a pair of said bearing end top chords, and pushed toward said beam until said shelf portion is positioned on a top surface of a beam flange, being positioned on said beam flange by said tab stop means. 9. The end connection for composite beam-joist systems according to claim 8 wherein said tab stop means is comprised of a centrally positioned cut-out in said shelf portion, said cut-out being comprised of a downwardly bent portion confluent with an obtuse angled forwardly bent portion cooperating to form a capture area for said beam flange. 10. The end connection for composite beam-joist systems according to claim 8 wherein said right side downwardly extending panel is slightly greater in length than said left side downwardly extending panel, and extends downward at an obtuse angle to said top surface of said metal sheet. 11. The end connection for composite beam-joist systems according to claim 10, further comprising an outwardly extending flange, said outwardly extending flange being substantially parallel to and extending in a direction away from said top surface of said metal sheet, affixed to a base portion of said right side downwardly extending panel for further stabilizing said composite pan between said opposed bearing ends. 12. A method for forming a concrete slab composite with a beam, comprising the steps of: (a) placing at least two bearing ends of at least two open-web joists, including respective top chords having respective ends in near proximity to said beam, on a top surface of said beam, said bearing ends being substantially parallel to each other at a spaced distance apart on said top surface of said beam and located a spaced distance from a respective one of said ends of an associated top chord; (b) placing corrugated decking on a top surface of said open-web joists; (c) affixing at least one shear stud to said top surface of said beam adjacent said bearing ends; (d) forming a horizontal platform between said bearing ends, said top surface of said beam, and an edge of said corrugated decking by positioning between opposed seat angles on said at least two bearing ends a composite pan, said composite pan configured to include a plurality of substantially rectangularly shaped segments including a horizontal top surface segment, a horizontal flange segment and a vertical panel segment disposed between, confluent with and substantially perpendicular to each of said horizontal top surface segment and horizontal flange segment, at least said vertical panel segment having no removal of material therefrom, that is, cut-out free, said horizontal top surface segment of said composite pan being positioned on and affixed to opposed top chord seat angles of adjacent open-web joists, said horizontal top surface of said composite pan extending from at least the edge of said corrugated decking to the respective first end of each of said pair of opposed angle iron members for each said open-web joist, such that said vertical panel is positioned at said respective first end of each of said pair of opposed angle iron members for each said open-web joist, said vertical panel extending downward a predetermined distance towards the top surface of said horizontally positioned beam structure support member such that said horizontal flange member is consequently positioned in a plane in close proximity and parallel to the top surface of said beam structure support member; and (e) pouring concrete over said horizontal platform, said bearing ends, said shear stud(s), and said top surface of said beam.
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