GRID DECK WITH SHEAR-RESISTING PLATES

Abstract

The present invention relates to a grid deck with shear-resisting plates and the assembly of the grid decks. The shear-resisting plates are pre-cast in the grid deck and protrude from the side surfaces thereof. When the grid decks with shear-resisting plates are assembled, they are laid on the beams with the shear-resisting plates contacting the beams and without the grid decks contacting the beams.

Claims

1.-9. (canceled)

10. A construction structure comprising: a first grid deck comprising: a plurality of first shear-resisting plates, each of which has a first part pre-cast in the first grid deck and has a second part protruding out of a first side of the first grid deck wherein the second part is extending and tapering from the first part, the second part having a first lower edge; a second grid deck comprising: a plurality of second shear-resisting plates, each of which has a third part pre-cast in the second grid deck and has a fourth part protruding out of a second side of the second grid deck wherein the fourth part is extending and tapering from the third part, the fourth part having a second lower edge; and a first I-beam disposed between the first side of the first grid deck and the second side of the second grid deck for supporting the first lower edge of each of the plurality of the first shear-resisting plates and the second lower edge of each of the plurality of second shear-resisting plates; wherein the second part of each of the plurality of first shear-resisting plates overlaps with the fourth part of each of the plurality of second shear-resisting plates in a direction perpendicular to the lengthwise direction of the I-beam wherein the overlapped dimension is less than the length of the first lower edge of each of the plurality of the first shear-resisting plates or the length of the second lower edge of each of the plurality of second shear-resisting plates, and wherein the first lower edge of each of the plurality of the first shear-resisting plates and the second lower edge of each of the plurality of second shear-resisting plates are at the same level of the bottom surfaces of the first grid deck and second grid deck.

11. The construction structure of claim 10 wherein the width of the first I-beam is smaller than the distance between the first side of the first grid deck and second side of the second grid deck so that the first and second grid decks do not contact the first I-beam, wherein each of the widths of the first lower edge of each of the plurality of the first shear-resisting plates and the width of the second lower edge of each of the plurality of second shear-resisting plates is smaller than the width of the first I-beam and wherein each of the first and second shear-resisting plates comprises a plurality of shear spikes thereon.

12. The construction structure of claim 11 wherein each of the first and second shear-resisting plates is pre-cast in regions near corners of the first grid deck or the second grid deck.

13. The construction structure of claim 12 wherein the first grid deck further comprises a third shear-resisting plate protruding out of a third side of the first grid deck wherein the first side of the first grid deck is perpendicular to the third side of the first grid deck.

14. The construction structure of claim 13 wherein the second grid deck further comprises a fourth shear-resisting plate protruding out of a fourth side of the second grid deck wherein the second side of the second grid deck is perpendicular to the fourth side of the second grid deck.

15. The construction structure of claim 14 further comprising a second I-beam wherein a lower edge of the third shear-resisting plates of the first grid deck and a lower edge of the fourth shear-resisting plates of the second grid deck are disposed on a top surface of the second I-beam.

16. The construction structure of claim 15 wherein the first I-beam intersects with second I-beam and a top surface of the first I-beam is flush with the top surface of the second I-beam.

17. The construction structure of claim 16 wherein a gasket is inserted between the first lower edge of each of the first shear-resisting plates and the first I-beam.

18. The construction structure of claim 17 wherein a gasket is inserted between the second lower edge of each of the second shear-resisting plates and the first I-beam.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 shows normal grid decks laid on a beam;

[0012] FIG. 2 shows a modification of grid decks shown in FIG. 1;

[0013] FIG. 3 shows the grid decks with shear-resisting plates of the present invention;

[0014] FIG. 4 shows the grid decks of the present invention which are connected to each other;

[0015] FIG. 5 shows a partially enlarged view of FIG. 4; and

[0016] FIG. 6 shows another embodiment of the grid decks with shear-resisting plates.

DETAILED DESCRIPTION

[0017] Conventional grid decks are generally of rectangular shape. Their side surfaces are provided with connecting bars 71, 81, and lap-joint bars 91 (shown in FIG. 1) or connecting bars 21, 22, 23 and 31, 32, 33, and lap-joint bars 50 (shown in FIG. 2). When grid decks 20, 30 are interconnected, the connecting bars 21, 22, 23 and 31, 32, 33 are connected and grout is filled so that the grid decks 20, 30 will be secured to each other. The grid decks 2 of the present invention are shown in FIG. 3, where the side surfaces thereof are provided with shear-resisting plates 4. The shear-resisting plates 4 are pre-cast in a grid deck 2 with a part protruding out of the grid deck 2. The shear-resisting plate 4 may have a plurality of shear spikes 6, which will increase the connection strength between them and the grid deck 2. As shown in FIGS. 4 and 5, the positions at which the shear-resisting plates are pre-cast are selected near the corners of the grid deck 2 so that the grid deck has a shear-resisting plate 4 protruding from one side surface at one corner and another shear-resisting plate 4 protruding from the opposite side surface; or a shear-resisting plate 4 protruding from each of two perpendicular side surfaces at each corner (FIG. 6). Referring to FIG. 3, the shear-resisting plate 4 protruding from the side surface of the grid deck 2 has a lower edge which is about the same level of the bottom surface of the grid deck.

[0018] The grid deck 2 with shear-resisting plates 4 can be connected with another grid deck 2 with shear-resisting plates 4 to form a continuous floor. As described above, the connecting bars, lap-joint bars, and shear-resisting plates 4 protruding into the gap between grid decks 2 will securely fix two grid decks after grout is filled into the gap and cured.

[0019] As shown in FIGS. 3, 4, and 5, grid decks 2 are connected above, the top surfaces of the beams 10. It is similar to conventional grid decks shown in FIGS. 1 and 2. The difference is that a conventional grid deck (FIG. 1) is laid on top of the beam 60 and contacts the top surface of the beam, whereas in the present invention, the shear-resisting plates 4 protruding into the gap between two grid decks 2 contact the top surface of the beams 10 with their lower edges (FIG. 3). Accordingly, the grid deck 2 does not directly contact the beam 10, and the gap between two grid decks 2 is not limited by the width of the beams. Even though the width of the beam is very small, the gap between grid decks can still be maintained in sufficient width if an appropriate size of shear-resisting plates is selected. The sufficient width of gap allows the connecting bars to have a sufficient length to provide high connection strength between grid decks after grout is filled into the gap between the grid decks. If necessary, a gasket 8 (shown in FIG. 3) can be inserted into the position where the shear-resisting plate contacts the beam in order to adjust the level of the grid, deck 2.

[0020] From the foregoing, it will be appreciated that, although specific embodiments of the invention have been described herein for purposes of illustration, various modifications may be made without departing from the spirit and scope of the embodiments described herein.