CN100429366C - Cavity structural member for concrete hollow slab - Google Patents

Abstract

The utility model provides a cavity component for concrete hollow slab, includes reinforced concrete bottom plate (1), two at least reinforced concrete curb plates (2), curb plate (2) stand upright on bottom plate (1), constitute rectangular shape frid component, characterized in that the rectangular shape inslot of rectangular shape frid component fill have two at least groove shape built-up plate (3) that open side down, have at least vertical full-length prestressing steel (4) in bottom plate (1) of the bottom of curb plate (2), the top of curb plate (2) has at least vertical full-length prestressing steel (4), opening groove shape built-up plate (3) interval sets up, leave between the opening groove shape built-up plate (3) at least one inner rib cavity (5), inner rib cavity (5) and concrete inner rib hole (6) on curb plate (2) communicate, bottom plate (1) stretches out curb plate (2) and constitutes two vertical selvedges (7) outward. It is suitable for use in-situ cast or pre-stressed reinforced concrete hollow slab, floor slab, roof, foundation slab, wall and open web bridge.

Description

Cavity member for concrete hollow slab

(1) Technical field

The invention relates to a cavity component for a concrete hollow slab.

(2) Background technology

Ribbed reinforced concrete prefabricated components are used to assemble lightweight slabs, which can bear two-way loads, do not need on-site formwork, and are low in cost, easy to hoist and transport. This ribbed prefabricated component includes a strip-shaped bottom plate and a long strip-shaped side plate, and the side plate and the bottom plate are connected as a whole to form a T-shaped or long-strip trough-shaped component. Usually the length of the side slab of this prefabricated component is the same as the length of the bottom slab. When this prefabricated component is assembled to form a lightweight slab that bears two-way loads, the cast-in-place concrete cannot pass through the side slab and cannot form a connected intersecting slab with the side slab. In-situ concrete ribs, at the same time, in the direction perpendicular to the side plate, various pipeline layouts need to be drilled and threaded on site, which not only wastes concrete materials, but also wastes man-hours. Moreover, after cast-in-place concrete, the assembled lightweight panels are solid. Concrete consumes a lot of material, and the lightweight slab is heavy, so it is not suitable for large-span pouring. Therefore, it is urgent to develop a new type of cavity member for concrete hollow slabs.

(3) Contents of the invention

The object of the present invention is to provide a cavity component for concrete hollow slabs, which has the characteristics of good mechanical properties, convenient construction, simple structure, material saving and low cost.

The solution of the present invention is based on the prior art, including a reinforced concrete bottom plate and at least two reinforced concrete side plates, the side plates stand upright on the bottom plate to form a strip-shaped channel plate member, which is characterized in that the strip-shaped The elongated groove of the grooved plate member is filled with at least two grooved overhead slabs with downward openings, at least one longitudinal prestressed steel bar in the bottom plate of the side plate, and at least one prestressed steel bar on the top of the side plate Longitudinal prestressed steel bars, open groove-shaped overhead slabs are arranged at intervals, and at least one inner rib cavity is left between the open trough-shaped overhead slabs, the inner rib cavity is connected with the concrete inner rib hole on the side plate, and the bottom plate protrudes Two longitudinal picks are formed outside the side panels. In this way, since the elongated groove of the elongated grooved plate member is filled with at least two grooved overhead slabs with downward openings, when the cavity member is applied to the construction of hollow slabs, the grooved slats can reduce The amount of concrete poured reduces the weight of the hollow slab, reduces the construction cost, and improves the bearing capacity of the hollow slab; at the same time, since there is at least one longitudinally long prestressed steel bar in the bottom plate of the side plate, and at least one prestressed steel bar on the top of the side plate Longitudinal prestressed steel bars, so the cavity member has high strength, high rigidity, and good integrity; moreover, since there is at least one inner rib cavity between the open groove-shaped overhead plates, the inner rib cavity and the side plate The inner rib holes of the concrete are connected, so the cast-in-place concrete can pass through the holes in the side plate smoothly, forming a connected cast-in-place concrete rib crossing the side plate, and forming a two-way rib combining cast-in-place and prefabricated together with the side plate At the same time, in the direction perpendicular to the side plate, various pipelines can be laid out very smoothly through the holes on the side plate, no need to drill holes on site; and, since the bottom plate protrudes out of the side plate to form two longitudinal protruding edges, Therefore, the pick side can be used as a construction formwork. During construction, its construction is more convenient, it can save the construction formwork, reduce the loss of the construction formwork, save the construction cost, and at the same time save the formwork installation process, speed up the construction speed, and improve the construction efficiency; Therefore, this cavity component has the characteristics of good mechanical properties, convenient construction, simple structure, material saving, and low cost, thereby achieving the purpose of the present invention. At the same time, the cavity component also has high strength, high rigidity, and easy manufacture. It is suitable for hollow slabs, hollow floors, roofs, foundation slabs, walls and hollow bridges of cast-in-place reinforced concrete or prestressed reinforced concrete, especially for hollow beamless floors.

The present invention is also characterized in that there is at least one tie-bonded concrete or mortar support plate transversely binding the adjacent side plates between the side plates. In this way, the tie-bonded concrete or mortar braces that tie the adjacent side plates horizontally can play a good role in supporting and reinforcing the side plates, effectively ensuring the quality of the cavity components, improving their strength and stiffness, and at the same time, improving their overall performance. better.

The present invention is also characterized in that the ends of the side plates are provided with tie-bonded concrete or mortar braces for tie-in side plates. In this way, the braced concrete or mortar braces can play a good role in supporting and reinforcing the side panels, and can effectively ensure the quality of the cavity components. When the cavity components are applied to the cast-in-place concrete hollow slab, the braces can Concrete is combined to form a superimposed rib structure, which can further improve the stress structure inside the hollow slab.

The present invention is also characterized in that the tie-bonded concrete or mortar support plate and the reinforced concrete bottom plate are connected as a whole. In this way, the braced concrete or mortar brace connects the side plate and the bottom plate into an integral force-bearing member, so that the braced concrete or mortar brace and the side plate can bear stress in two different directions. When the cavity component is applied to cast-in-place concrete After the hollow slab is filled, the structural performance of the hollow slab can be further improved.

The present invention is also characterized in that the cavity of the inner rib is provided with a tie knot between the groove-shaped overhead boards. In this way, when there is a tie pier between the groove-shaped overhead plates on the inner rib cavity, the tie pier will connect the adjacent groove-shaped overhead plates into a whole, and the tie pier will play a role in the inner rib cavity. The positioning of adjacent trough-shaped overhead plates can effectively ensure the quality of cavity components.

The present invention is also characterized in that the tie piers are reinforced tie piers. In this way, when the tie pier is a reinforced tie pier, the strength, stiffness and impact resistance of the tie pier have been greatly improved, making it less likely to be damaged during stacking, transportation, installation and construction applications, and can greatly reduce the The loss rate of cavity components saves cost.

The present invention is also characterized in that the side box wall and the side plate of the trough-shaped overhead plate are laminated into a whole. In this way, the side box wall and the side plate of the trough-shaped overhead plate are laminated into a whole, which can improve the integrity, compression resistance, tensile resistance and shear resistance of the cavity member for the hollow plate.

The present invention is also characterized in that the steel bars or steel mesh or fiber mesh reinforcement protruding from the wall of the trough-shaped overhead plate are anchored in the side plate or/and the bottom plate. In this way, when the steel bar or steel mesh or fiber mesh reinforcement protrudes from the wall of the trough-shaped overhead slab and is anchored in the side plate or the bottom slab, the trough-shaped overhead slab has the advantages of high strength, strong impact resistance, and is not easily damaged. Therefore, the connection between the two is stable and reliable, and it is not easy to be damaged during stacking, transportation, installation and construction, which can effectively reduce the loss rate of cavity components and save costs.

The present invention is also characterized in that the reinforcement protrudes from the opening of the side wall of the trough-shaped overhead plate and is anchored in the bottom plate or/and the side plate. In this way, the reinforcement protrudes from the opening of the side wall of the trough-shaped overhead plate and is anchored in the bottom plate or/and the side plate, which can greatly improve the rigidity and strength of the cavity member.

The present invention is also characterized in that the steel bars or wire mesh reinforcements in the walls of the trough-shaped overhead slabs are exposed. In this way, when the steel bar or steel mesh reinforcement in the wall of the channel-shaped overhead slab is exposed, the bonding strength between the cavity member and the cast-in-place concrete can be improved.

The present invention is also characterized in that the side plate is provided with a finite-distance pier. In this way, by setting the distance-limiting pier on the side plate, the cavity component can be accurately positioned to limit the distance, so that the distance between the two can be ensured during the application process, thereby ensuring the width or thickness of the cast-in-place concrete, so that the construction personnel Easy quality control of hollow core panels.

The present invention is also characterized in that the trough-shaped overhead plate is provided with reinforcing ribs, or the cavity of the trough-shaped overhead plate is provided with reinforcing rods or stiffening plates. In this way, when the ribs are provided on the trough-shaped slab, or the cavity of the trough-shaped slab is provided with a reinforcing rod or a stiffener, the strength, stiffness and impact resistance of the slab can be greatly improved. It is not easy to be damaged during stacking, transportation, installation and construction application, which can greatly reduce the loss rate of cavity components and save costs. When the cavity components are applied to cast-in-place concrete hollow slabs, the support rods can participate The structure is stressed, and the load-bearing structural system of the hollow slab is improved and strengthened.

The present invention is also characterized in that at least one of reinforcing ribs, reinforcing rods or stiffening plates is arranged on the bottom plate. In this way, when the base plate is provided with reinforcing ribs, reinforcing rods or stiffening plates, the strength, rigidity and impact resistance of the base plate are greatly improved, making it not easy to be damaged during stacking, transportation, installation and construction applications. The loss rate of the cavity component is greatly reduced, and the cost is saved. When the cavity component is applied to the cast-in-place concrete hollow slab, the load-bearing structural system of the hollow slab can be improved.

The present invention is also characterized in that there is at least one of protrusions, raised lines, grooves or pits on the trough-shaped overhead plate. In this way, when the cavity component is applied to the cast-in-place concrete hollow slab, the projections and steel bar pads can accurately position the steel bars to ensure the pouring quality of the hollow slab. The holes can facilitate the passage of pipelines, which can effectively improve the structural performance of the hollow slab.

The present invention is also characterized in that a transport hanger is provided on the cavity member. The handling hanger can be a handle, hook, ring or other devices. In this way, the components can be stacked, transferred, hoisted and constructed very conveniently, which reduces the work difficulty and work intensity of the above-mentioned processes, is conducive to improving the construction efficiency and reducing the construction cost.

(4) Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 4 is a schematic structural diagram of Embodiment 4 of the present invention.

Fig. 5 is a schematic structural diagram of Embodiment 5 of the present invention.

Fig. 6 is a schematic structural diagram of Embodiment 6 of the present invention.

Fig. 7 is a schematic structural diagram of Embodiment 7 of the present invention.

(5) Specific implementation methods

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the accompanying drawings, the present invention includes a reinforced concrete bottom plate 1, at least two reinforced concrete side plates 2, and the side plates 2 stand upright on the bottom plate 1 to form a strip-shaped channel plate member, which is characterized in that the strip-shaped channel plate The elongated groove of the member is filled with at least two groove-shaped overhead plates 3 with openings downward, the bottom plate 1 at the bottom of the side plate 2 has at least one longitudinally long prestressed steel bar 4, and the top of the side plate 2 has At least one longitudinally long prestressed steel bar 4, open groove-shaped overhead plates 3 are arranged at intervals, and at least one inner rib cavity 5 is left between the open groove-shaped overhead plates 3, and the inner rib cavity 5 and the side plate 2 The concrete inner rib holes 6 are connected, and the bottom plate 1 extends out of the side plate 2 to form two longitudinal overhangs 7 . In attached drawing 1, 1 is a reinforced concrete bottom plate, 2 is a side plate, 3 is a trough-shaped overhead slab, 4 is a prestressed steel bar, 5 is an inner rib cavity, 6 is a hole, and 7 is an overhang. In the following drawings , with the same number, the description is the same. As shown in Figure 1, the elongated groove of the elongated groove plate member is filled with five groove-shaped overhead boards 3 with downward openings, and there is a longitudinal through-length in the bottom plate 1 of the side plate 2. Prestressed steel bar 4, the top of the side plate 2 has longitudinally long prestressed steel bar 4, open groove-shaped overhead plates 3 are arranged at intervals, and internal rib cavities 5 are left between the open groove-shaped overhead plates 3, and the inner rib cavities 5 It communicates with the concrete inner rib hole 6 on the side plate 2, and the bottom plate 1 extends out of the side plate 2 to form two longitudinal overhangs 7.

The present invention is also characterized in that there is at least one tie-bonded concrete or mortar support plate 8 between the side plates 2 that transversely ties the adjacent side plates 2 . As shown in FIG. 2 , there are tie-bonded concrete braces 8 that tie the adjacent side plates 2 transversely between the side plates 2 .

The present invention is also characterized in that the end of the side plate 2 is provided with a tie-bonded concrete or mortar brace 8 to tie the side plate 2 . As shown in FIG. 2 , the end of the side plate 2 is provided with a tie-bonded concrete brace 8 to tie the side plate 2 .

The present invention is also characterized in that the tie-bonded concrete or mortar support board 8 is connected with the reinforced concrete bottom plate 1 as a whole. As shown in FIG. 2 , the tie-bonded concrete support plate 8 and the reinforced concrete bottom plate 1 are connected as a whole.

The present invention is also characterized in that the inner rib cavity 5 is provided with the tie piers 9 between the groove-shaped overhead plates 3 to tie the knot. As shown in FIG. 3 , the inner rib cavity 5 is provided with a tie pier 9 between the groove-shaped overhead boards 3 .

The present invention is also characterized in that the tie-tie piers 9 are reinforced tie-knot piers. As shown in FIG. 3 , the tie piers 9 described above are reinforced tie piers.

The present invention is also characterized in that the side box wall of the trough-shaped overhead plate 3 and the side plate 2 are laminated into a whole. As shown in FIG. 3 , the side box wall of the trough-shaped overhead plate 3 and the side plate 2 are laminated into a whole.

The present invention is also characterized in that the reinforcement 10 protruding from the wall of the trough-shaped overhead plate 3 or the steel mesh or fiber mesh is anchored in the side plate 2 or/and the bottom plate 1 . As shown in FIG. 4 , the reinforcement 10 protruding from the wall of the channel-shaped overhead plate 3 is anchored in the side plate 2 .

The present invention is also characterized in that the reinforcement 10 protrudes from the opening of the side wall of the trough-shaped overhead plate and is anchored in the bottom plate 1 or/and the side plate 2 . As shown in FIG. 4 , the reinforcement 10 protrudes from the opening of the side wall of the trough-shaped overhead plate and is anchored in the bottom plate 1 .

The present invention is also characterized in that the steel bars or steel mesh reinforcements 10 inside the walls of the channel-shaped overhead slab 3 are exposed. As shown in FIG. 4 , the steel reinforcement 10 inside the wall of the channel-shaped overhead slab 3 is exposed.

The present invention is also characterized in that the side plate 2 is provided with a finite-distance pier 11 . As shown in FIG. 4 , the side plate 2 is provided with a finite-distance pier 11 .

The present invention is also characterized in that the above-mentioned trough-shaped overhead board 3 is provided with reinforcing ribs 12 , or the cavity of the trough-shaped overhead board 3 is provided with reinforcing rods 13 or stiffening plates 14 . As shown in FIG. 5 , reinforcing ribs 12 are provided on the trough-shaped overhead plate 3 , and reinforcing rods 13 and stiffening plates 14 are provided in the cavity of the trough-shaped overhead plate 3 .

The present invention is also characterized in that at least one of reinforcing ribs 12 , reinforcing rods 13 or stiffening plates 14 is provided on the bottom plate 1 . As shown in FIG. 5 , reinforcing rods 13 and stiffening plates 14 are arranged on the bottom plate 1 .

The present invention is also characterized in that there is at least one of protrusions 15 , raised lines 16 , grooves 17 or pits 18 on the trough-shaped overhead plate 3 . As shown in FIG. 6 , the said trough-shaped overhead plate 3 is respectively provided with bumps 15 , raised lines 16 and pits 18 . As shown in FIG. 7 , grooves 17 are provided on the trough-shaped overhead board 3 .

The present invention is also characterized in that a transport hanger 19 is provided on the cavity member. As shown in FIG. 7 , a transport hanger 19 is provided on the cavity member.

When the present invention is implemented, cement concrete can be used to make the bottom plate 1 containing the prestressed steel bar 4 in the bottom plate form, and then the side plate form is supported, and then the side plate 2 containing the prestressed steel bar 4 can be made with cement concrete, and the Holes 6 are provided, and the bottom plate 1 protrudes from the side plate 2 to form two longitudinal edges 7. When the concrete bottom plate 1 and the concrete side plate 2 are not solidified and hardened, the prefabricated trough-shaped overhead plate 3 is placed on the concrete bottom plate 1 and superimposed with the concrete side plate 2 to form a whole with each other, there is an inner rib cavity 5 between the groove-shaped overhead plates 3, and the inner rib cavity 5 communicates with the concrete inner rib hole 6 on the side plate 2, wherein, The trough-shaped overhead slab 3 can be made of cement mortar fiber mesh cloth or steel wire mesh. After the above-mentioned components are maintained and demoulded, the required cavity components for concrete hollow slabs can be obtained.

Claims (15)

1. A cavity member for a concrete hollow slab, comprising a reinforced concrete bottom slab (1), at least two reinforced concrete side slabs (2), and the side slabs (2) stand upright on the bottom slab (1) to form a strip-shaped channel plate member , it is characterized in that the elongated groove of the elongated groove plate member is filled with at least two groove-shaped overhead plates (3) with openings downward, and the bottom plate (1) at the bottom of the side plate (2) has At least one longitudinally long prestressed steel bar (4), the top of the side plate (2) has at least one longitudinally long prestressed steel bar (4), the open trough-shaped overhead plates (3) are arranged at intervals, and the open trough-shaped At least one inner rib cavity (5) is left between the overhead plates (3), the inner rib cavity (5) communicates with the concrete inner rib hole (6) on the side plate (2), and the bottom plate (1) protrudes from the side Board (2) constitutes two longitudinal protruding edges (7) outside. 2. A cavity member for concrete hollow slabs according to claim 1, characterized in that there is at least one tie concrete or tie between the side plates (2) that transversely ties the adjacent side plates (2) Mortar stays (8). 3. A cavity component for a concrete hollow slab according to claim 1, characterized in that the end of the side plate (2) has a tie-tie concrete or mortar support plate ( 8). 4. A cavity component for a concrete hollow slab according to claim 2 or 3, characterized in that the said tie-bonded concrete or mortar support plate (8) is integrally connected with the reinforced concrete bottom plate (1). 5. A cavity member for concrete hollow slabs according to claim 1, characterized in that there are tie piers (9) between the groove-shaped overhead panels (3) on the inner rib cavity (5) Rachel. 6. The cavity member for hollow slabs according to claim 1, characterized in that the tie piers (9) are reinforced tie piers. 7. A cavity component for concrete hollow slabs according to claim 1, characterized in that the side box walls of the trough-shaped overhead slabs (3) are laminated with the side panels (2) to form a whole. 8. A cavity component for concrete hollow slabs according to claim 1, characterized in that steel bars or steel wire mesh or fiber mesh reinforcements (10) protrude from the wall of the trough-shaped overhead slab (3) and are anchored In the side panels (2) or/and in the bottom panel (1). 9. A cavity component for concrete hollow slabs according to claim 8, characterized in that the reinforcement (10) protrudes from the opening of the side wall of the trough-shaped overhead slab and is anchored to the bottom plate (1) or / and inside the side panels (2). 10. A cavity member for concrete hollow slabs according to claim 1, characterized in that the steel bars or steel mesh reinforcements (10) inside the walls of the trough-shaped overhead slabs (3) are exposed. 11. The cavity member for hollow slabs according to claim 1, characterized in that the side plates (2) are provided with finite-distance piers (11). 12. The cavity member for hollow slabs according to claim 1, characterized in that reinforcing ribs (12) are provided on the trough-shaped overhead slab (3), or inside the cavity of the trough-shaped slab (3) A reinforcing rod (13) or a stiffening plate (14) is provided. 13. The hollow member for hollow slabs according to claim 1, characterized in that at least one of reinforcing ribs (12), reinforcing rods (13) or stiffening plates (14) is provided on the bottom plate (1) . 14. The cavity member for hollow slabs according to claim 1, characterized in that there are bumps (15), protruding lines (16), grooves (17) or concaves on the trough-shaped overhead slab (3). At least one of the pits (18). 15. The cavity member for hollow slabs according to claim 1, characterized in that a transport hanger (19) is provided on the cavity member.

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