More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board
By employing longer prestressed and reinforcement bars in multiple layers and directions, along with transverse reinforcements and shear dowels, the connectivity issues of prestressed concrete hollow core boards are resolved, resulting in a structurally integrated and earthquake-resistant floor construction.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-07
- Publication Date
- 2026-03-12
AI Technical Summary
Prestressed reinforce concrete hollow core boards face challenges in effective connections to bearing walls, beams, and adjacent boards, leading to weak earthquake protection in structures.
Implementing longer prestressed and reinforcement bars in multiple layers and directions, along with transverse reinforcements and shear dowels, to enhance connectivity and anchoring within and between concrete hollow core boards, allowing for integral floor construction with improved seismic resilience.
The enhanced connectivity and anchoring methods result in a strong, integrated floor structure with superior earthquake protection, reducing construction time and costs while maintaining structural integrity.
Smart Images

Figure CN2024000034_12032026_PF_FP_ABST
Abstract
Description
More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board
[0001] Technical Field of invention:
[0002] This invention is in structural design and construction field.Background of the invention
[0003] [Corrected under Rule 26, 30.09.2024]Prestressed reinforce concrete hollow core board is a good technology, it is easy and fast for construction, big span, save labor, save material, can be made in shop, and have good quality. So it used to be used in many kinds of building and structures, but because it has something short, such like: it cannot be well connected to the bearing wall or bearing beam which the concrete hollow core board’s two end are set; and its side cannot be well connected to another concrete hollow core board’s side which nearby it; also its side cannot be well connected to the wall or perimeter beam or side beam which nearby it. All of these caused the buildings which use the Prestressed reinforce concrete hollow core board are weak in earthquake protection.Summary of the invention
[0004] The purpose of this invention is to bring forward a new way to solve the problems of the shortage of Prestressed reinforce concrete hollow core board. The invention of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” 1 (see figure 1, 2) can solve the problems and make up the shortages of the Prestressed reinforce concrete hollow core board. The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” 1 (see figure 1, 2) can be well connected to the bearing wall or bearing beam which the concrete hollow core board's two end are set; and its side can be well connected to another concrete hollow core board's side which nearby it; also its side can be well connected to the wall or perimeter beam or side beam which nearby it. then the entire floor of building or structure may become a strong integral floor, then the building or structure will have very good earthquake protection.Description of the invention
[0005] To reach the goal of the purpose above, this invention brings forward the new technologies below:
[0006] a. Make the lower layer length direction prestressed reinforcement 2 (or non prestressed reinforcement) (see Figure 1, 2) of concrete hollow core board longer than the concrete hollow core board at it's both end, and make it well connected and well anchored into the bearing wall or bearing beam which the concrete hollow core board's two end are set. If a concrete hollow core board opposite another concrete hollow core board, then make these two opposite concrete hollow core board's longer reinforcement well connected together and well anchored into the second poured concrete which above the bearing wall or bearing beam. This patent does not make any limitation for the length of this reinforcement which longer than the concrete hollow core board at it's both end, let the design engineer make decision.
[0007] b. Add upper layer length direction reinforcement (or prestressed reinforcement) 3 of concrete hollow core board and make it longer than the concrete hollow core board at it's both end, and make it well connected and well anchored into the bearing wall or bearing beam which the concrete hollow core board's two end are set. If a concrete hollow core board opposite another concrete hollow core board, then make these two opposite concrete hollow core board's longer reinforcement well connected together and well anchored into the second poured concrete which above the bearing wall or bearing beam. This patent does not make any limitation for the length of this reinforcement which longer than the concrete hollow core board at it's both end, let the design engineer make decision. If a certain project does not need this reinforcement by calculation, then this reinforcement can be omit,
[0008] c. Add upper layer and lower layer of transverse direction reinforcement 4 and 5 which longer than the concrete hollow core board's width at its both sides, and make this longer reinforcement well connected and anchored into the perimeter wall or perimeter beam or side beam which nearby the concrete hollow core board's side, and make this longer reinforcement well connected and anchored into the concrete structural beam or wall which between two concrete hollow core board's sides. This patent does not make any limitation for the length of this reinforcement which longer than the concrete hollow core board's width at its both sides, let the design engineer make decision. If a certain project does not need this reinforcement by calculation, then this reinforcement can be omit.
[0009] d. Add reinforce ties 6 in rib 12 between the concrete holes 11, so that it may increase concrete hollow core board's shear strength. The ties can be single leg or double legs or any other shapes, and even the ties can be made longer and higher than the concrete hollow core board's surface, so that it can be used for the second poured concrete composite layer. If a certain project does not need these ties by calculation, then these ties can be omit.
[0010] e. Add concrete holes 7 for concrete shear dowel in both sides of concrete hollow core board 1. After second poured concrete in the perimeter wall or perimeter beam or side beam and in the structural beam or wall which between two concrete hollow core board's sides are cast, and after the second poured concrete curing and reach to the design strength, then the second poured concrete will form shear dowels in the holes 7 on the concrete hollow core board's both sides. This is helpful for the entire floor's integrative.
[0011] f. When the concrete hollow core board erection, and when a concrete hollow core board nearby another concrete hollow core board, then it should have a space 6 between the two concrete hollow core board's sides (see Figure 3) , this patent does not make any limitation for this space's width, let the design engineer make decision; but I suggest that this space's width should not less than 150mm, so that the longer transverse reinforcement of the concrete hollow core board can be tied together and firmly anchored into the second poured concrete in this space, we name this space after second poured concrete is cast: ” structural beam” 7, (at this space, also can be a shear wall) .
[0012] g. When the concrete hollow core board erection, and when a concrete hollow core board nearby a perimeter wall or perimeter beam or side beam, we should tie the longer transverse direction reinforcement and firmly anchor them into the second poured concrete of perimeter wall or perimeter beam or side beam.
[0013] h. Since this invention is a new technology, some people may hard to accept it. We may make this new technology looked like have more integrative for the entire floor, so that people may easy to accept this new technology. We may increase the space's width between the two concrete hollow core board's sides (see Figure 4) , we may increase this space's width as wide as the concrete hollow core board's width, and even make it more wide, that means make this space as cast in place concrete slab 6, this slab also can be made as cast in place concrete solid board or concrete hollow core board.
[0014] i. When the concrete hollow core board erection, the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” can be used as building floor as its normal use, and it can be also used as formwork's support (see Figure 5) during construction period. This let the formwork job become more easy and fast, it saves a lot of labor and material, and then save big money and shorten the construction period.
[0015] j. Since this patent does not make any limitation for the width of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” . If possible, for example, if the transportation machine is big enough and the rood condition is good, and the erection machine is big enough, then we may make concrete hollow core board more wide, even we can make the concrete hollow core board as wide as one room's width (see Figure 6) , that means we can make one concrete hollow core board for one room. This may make big save on steel reinforcement, and big save on formwork, and big save on labor, and the top surface of the concrete hollow core board can be made smooth and shining, this can reduce some job after, then will save big money. And this also let the entire floor's integrative better and have very good earthquake protection.Brief Description of the Drawings
[0016] Figure 1 is the sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” which include:
[0017] 1. Is the concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0018] 2. Is the lower layer of length direction prestressed reinforcement (or non prestressed reinforcement) which longer than the concrete hollow core board at its both end.
[0019] 3. Is the upper layer of length direction reinforcement (or prestressed reinforcement) which longer than the concrete hollow core board at its both end.
[0020] 4. the upper layer of transverse direction reinforcement which longer than the concrete hollow core board's width at its both sides.
[0021] 5. Is the lower layer of transverse direction reinforcement which longer than the concrete hollow core board's width at its both sides.
[0022] 6. Is the reinforce ties (see figure 2) in concrete rib 12 which between two concrete holes.
[0023] 7. Is the concrete hole for concrete shear dowel on the concrete hollow core board's two sides.
[0024] 8. Is the length of the “More layer, more direction, longer prestressed reinforcement+ longer reinforcement concrete hollow core board” .
[0025] 9. Is the width of the “More layer, more direction, longer prestressed reinforcement +longer reinforcement concrete hollow core board” .
[0026] 10. Is the thickness of the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0027] 11. Is the concrete hole of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0028] 12. Is the concrete rib which between two holes of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0029] Figure 2 is the reinforcemen sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” which include:
[0030] 1. Is the concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0031] 2. Is the lower layer of length direction prestressed reinforcement (or non prestressed reinforcement) which longer than the concrete hollow core board at its both end.
[0032] 3. Is the upper layer of length direction reinforcement (or prestressed reinforcement) which longer than the concrete hollow core board at its both end.
[0033] 4. the upper layer of transverse direction reinforcement which longer than the concrete hollow core board's width at its both sides.
[0034] 5. Is the lower layer of transverse direction reinforcement which longer than the concrete hollow core board's width at its both sides.
[0035] 6. Is the reinforce ties in concrete rib 12 (see figure 1) between two concrete holes11.
[0036] 7. Is the concrete hole for concrete shear dowel on the concrete hollow core board's two sides.
[0037] Figure 3 is the erection sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” floor. This sketch drawing only shown the reinforcement in the concrete hollow core board, other reinforcement is not shown here. This drawing include:
[0038] 1. Is the concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0039] 2. Is the bearing wall or bearing beam which the More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board's two end are set.
[0040] 3. Is the second poured concrete which above the bearing wall 2 or bearing beam 2. This second poured concrete is cast after the concrete hollow core board are set down, and after the longer length direction reinforcement of the concrete hollow core board at its both end are well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the bearing wall or bearing beam.
[0041] 4. Is the perimeter wall or perimeter beam or side beam's location which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” before the second poured concrete is cast.
[0042] 5. Is the perimeter wall or perimeter beam or side beam which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” after the second poured concrete is cast.
[0043] 6. The structural beam location (this location also can be shear wall) between the two concrete hollow core board's sides before the second poured concrete is cast. this patent does not make any limitation for the location's width, let the design engineer make decision; but I suggest that this width should not less than 150mm, so that the longer transverse steel reinforcement of the concrete hollow core board can be connected together and firmly anchored into the second poured concrete in this place.
[0044] 7. The structural beam (or shear wall) between the two concrete hollow core board's sides after the second poured concrete is cast. Since the longer transverse reinforcement of the concrete hollow core board at it's sides is well connected together and firmly anchored into the second poured concrete of concrete structural beam (or shear wall) , so the two concrete hollow core board may well connect to each other.
[0045] After the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” are set down, and after all of the length direction reinforcement of concrete hollow core board at its both end are well connected above the bearing wall or bearing beam; and all of the longer transverse direction reinforcement of the concrete hollow core board are well connected in the structural beam (or shear wall) location and in perimeter wall location or perimeter beam location or side beam location, then all the second poured concrete of the whole floor may cast same time. After the second poured concrete curing and reach to the design strength, then the whole floor will have very good integrative and will have good earthquake protection.
[0046] Figure 4 is another erection sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” floor. This sketch drawing is made the structural beam which between the two concrete hollow core board more wide even as wide as cast in place concrete slab. This sketch drawing only shown the reinforcement in the concrete hollow core board, other reinforcement is not shown here. This drawing include:
[0047] 1. Is the concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0048] 2. Is the bearing wall or bearing beam of the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0049] 3. Is the second poured concrete which above the bearing wall or bearing beam 2. This second poured concrete is cast after the concrete hollow core board are set down, and after the longer length direction reinforcement of the concrete hollow core board at its both end are well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the bearing wall or bearing beam 2.
[0050] 4. Is the perimeter wall or perimeter beam or side beam which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” after the second poured concrete is cast. This second poured concrete is cast after the concrete hollow core board are set down, and after the longer transverse direction reinforcement of the concrete hollow core board at its sides are well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the perimeter wall or perimeter beam or side beam.
[0051] 5. Is the perimeter wall or perimeter beam or side beam's location which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” before the second poured concrete is cast.
[0052] 6. Is the cast in place concrete slab which is made the space width between the two concrete hollow core board's sides more wider, that is change the concrete structural beam (see figure 3) more wide to the concrete slab. this slab also can be made as cast in place concrete solid board or concrete hollow core board.
[0053] Figure 5 is the erection formwork sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” floor. This sketch drawing is made the structural beam which between the two concrete hollow core board's sides more wide even as wide as cast in place concrete slab. This sketch drawing only shown the reinforcement in the concrete hollow core board, other reinforcement is not shown here. This drawing include:
[0054] 1. Is the concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” floor. This concrete hollow core board can be used as building floor as its normal use, also it can be used as formwork support during construction period.
[0055] 2. Is the bearing wall or bearing beam of the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0056] 3. Is the second poured concrete which above the bearing wall 2 or bearing beam 2. This second poured concrete is cast after the concrete hollow core board are set down, and after the longer length direction reinforcement of the concrete hollow core board at its both end is well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the bearing wall or bearing beam.
[0057] 4. Is the perimeter wall or perimeter beam or side beam which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” after the second poured concrete is cast. This second poured concrete is cast after the concrete hollow core board are set down, and after the longer transverse direction reinforcement of the concrete hollow core board at its side is well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the side wall or perimeter beam or side beam.
[0058] 5. Is the perimeter wall or perimeter beam or side beam's location which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” before the second poured concrete is cast.
[0059] 6. Is the top view of second poured concrete slab's formwork.
[0060] 7. Is the cast in place concrete slab which is made the space width between the two concrete hollow core board's sides more wider, that means change the concrete structural beam (see figure 3) more wide to the concrete cast in place slab. This cast in place slab can be concrete solid slab or concrete hollow cord board.
[0061] 8. Is the hanger beam of the formwork of second poured concrete slab.
[0062] 9. Stow wood for the formwork hanger beam.
[0063] 10. Hanger of formwork of second poured concrete slab.
[0064] 11. Is the side view of second poured concrete slab's formwork.
[0065] 12. Is the stiffener of the second poured concrete slab's formwork.
[0066] Figure 6 is another erection sketch drawing of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” . This sketch drawing shown the concrete hollow core board more wide even as wide as one room's width, that means one concrete hollow core board for one room. This sketch drawing only shown the reinforcement in the concrete hollow core board, other reinforcement is not shown here. This drawing include:
[0067] 1. Is the big concrete hollow core board of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” . This shown one concrete hollow core board for one room.
[0068] 2. Is the bearing wall or bearing beam of the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” .
[0069] 3. Is the second poured concrete which above the bearing wall 2 or bearing beam 2. This second poured concrete is cast after the concrete hollow core board is set down, and after the longer length direction reinforcement of the concrete hollow core board at its both end is well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the bearing wall or bearing beam.
[0070] 4. Is the perimeter wall or perimeter beam or side beam's location which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” before the second poured concrete is cast.
[0071] 5. Is the perimeter wall or perimeter beam or side beam which beside the “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” after the second poured concrete is cast. This second poured concrete is cast after the concrete hollow core board is set down, and after the longer transverse direction reinforcement of concrete hollow core board at its both sides are well connected and well anchored in the place. This may cause the concrete hollow core board well connected with the perimeter wall or perimeter beam or side beam.
Claims
1.The invention patent of “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” comprising: concrete hollow core board 1, lower layer of length direction of prestressed reinforcement 2 which longer than the concrete hollow core board at its both end, upper layer of length direction of reinforcement 3 which longer than the concrete hollow core board at its both end, upper layer of transverse direction reinforcement 4 which longer than concrete hollow core board′s width at its both sides, lower layer of transverse reinforcement 5 which longer than concrete hollow core board′s width at its both sides, and reinforce ties 6 in concrete rib 12, concrete holes for concrete shear dowel 7; the features of which are: after all of the longer reinforcement tied firmly together, and then cast concrete, after the concrete curing and reach to the design strength, then all of the reinforcement and concrete may work together, and be a strong “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” ; when erection, after the concrete hollow core board are set on the building or structure floor, since both the upper layer and lower layer and both length direction and transverse direction, all of the reinforcement are longer than the concrete hollow core board, and all of the longer reinforcement may well connected with other parts of the same floor, and all of the longer reinforcement may well anchored into the second poured concrete, so the whole floor may work as a very good integral floor, this will be very good for earthquake protection.2.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the lower layer of length direction prestressed reinforcement (or non prestressed reinforcement) 2 which longer than the concrete hollow core board at its both end can be prestressing tendons or normal steel reinforcing bars or steel wire reinforcement, and even can be carbon fiber made tension member or glass fiber made tension member or any other material made tension member, this patent does not make any limitation for the length of the reinforcement which longer than the concrete hollow core board at its both end, let the design engineer make decision.3.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the upper layer of length direction reinforcement (or prestressed reinforcement) 3 which longer than the concrete hollow core board at its both end can be normal steel reinforcing bars or steel wire reinforcement or prestressing tendons, and even can be carbon fiber made tension member or glass fiber made tension member or any other material made tension member, this patent does not make any limitation for the length of the reinforcement which longer than the concrete hollow core board at its both end, let the design engineer make decision; if a certain project does not need this reinforcement by calculation, then this reinforcement can be omit.4.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the upper layer and lower layer of transverse direction reinforcement 4 and 5 which longer than the concrete hollow core board′s width at its both sides can be normal steel reinforcing bars or steel wire reinforcement, and even can be carbon fiber made tension member or glass fiber made tension member or any other material made tension member, this patent does not make any limitation for the length of the reinforcement which longer than the concrete hollow core board′s width at its both sides, let the design engineer make decision; if a certain project does not need this reinforcement by calculation, then this reinforcement can be omit.5.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the upper layer and lower layer of transverse direction reinforcement 4 and 5 which longer than the concrete hollow core board′s width at its both sides can be set up or below the length direction reinforcement which nearby it, this patent does not make any limitation, let the design engineer make decision.6.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the reinforce ties 6 in concrete rib 12, can be normal steel reinforcing bars or steel wire reinforcement, and even can be carbon fiber made tension member or glass fiber made tension member or any other material made tension member, the ties can be single leg or double legs or any other shape, and even the ties can be made longer and higher than the concrete hollow core board′s surface, so that it can be used for the second poured concrete composite layer; if a certain project does not need these ties by calculation, then these ties can be omit.7.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the concrete hollow core board′s length 8, width 9, thickness 10, and size, shape, location, amount of the concrete hollow core, and the concrete hole 7 for concrete shear dowel′s size, shape, and the width of the concrete rib 12 which between the two concrete holes, and the strength of the concrete, this patent does not make any limitation, let the design engineer make decision.8.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said when the concrete hollow core board erection, when another concrete hollow core board nearby it, then it should have a space between the two concrete hollow core board′s sides, this patent does not make any limitation for this space′s width, let the design engineer make decision; but I suggest that this space′s with should not less than 150mm, so that the longer transverse steel reinforcement of the concrete hollow core board can be tied together and firmly anchored into the second poured concrete in this space, then these two concrete hollow core board may firmly connected together.9.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said that the reinforcement′s variety, size, amount, space between, and the way of the reinforcement connection, and the way of the reinforcement anchored into concrete, this patent does not make any limitation, let the design engineer make decision.10.The “More layer, more direction, longer prestressed reinforcement + longer reinforcement concrete hollow core board” according to claim 1, wherein said the way of to make the concrete hollow core, this patent does not make any limitation, it can be made by steel pipe or tube, or it can be made by plastic pipe or tube, or even it can be made by inflatable capsule, or it can be made by any other material, let the design engineer make decision.
Citation Information
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