Precast concrete arch rib plate

Abstract

The utility model provides a precast concrete arch rib plate. The precast concrete arch rib plate comprises a top plate, rib beams and rib plates, the ribbed beams are distributed on the two sides of the top plate in the longitudinal direction and used for supporting the top plate. The rib plates are arranged on one sides of the rib beams, one ends of the rib plates are connected with the lower plate face of the top plate, and the other ends of the rib plates are connected with the rib beams. Cavities are formed among the top plate, the ribbed beams and the ribbed plates; by arranging the connecting pieces penetrating through the rib beams, the prefabricated arch rib plates can be conveniently connected with other structures, connection is easy, convenient and efficient, and the construction efficiency is improved; prestressed tendons are arranged at the other ends of the rib beams, so that the bearing capacity of the arch rib plates can be improved; by increasing the transverse span of the top plate, the size of the prefabricated concrete arch rib plate can be increased, meanwhile, equipment pipelines can be arranged in the cavity, and the whole structure can be neat and attractive.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to a prefabricated concrete arch rib plate. Background Art

[0002] With the development of society, the requirements for architectural shapes are getting higher and higher. The traditional concrete frame structure system is difficult to meet the requirements. The larger the span, the higher the net height requirement. The deadweight and frame section of the ordinary concrete structure system will be larger. In addition, the increase of equipment pipelines below will further compress the net height and make the overall structure more bloated.

[0003] With the continuous development of prefabricated construction technology, its advantages such as fast construction speed, safety and reliability, energy saving and environmental protection, and controllable quality have become prominent, especially in large-scale factories in the industrial field. At present, there is little research on prefabricated structural systems for large factories in China. The development of a set of prefabricated structural systems for large spans and heavy loads can meet the requirements of industrial buildings for construction period, quality and cost. The original large-span prefabricated structure has dense secondary beams and many connection nodes, which makes the installation more cumbersome and complicated. Double T-plates are used, and the uneven force applied to the flange will cause torsion, which poses a great safety hazard.

[0004] Therefore, providing a structural system with a large span, efficient bearing capacity, simple shape, safety and reliability, easy installation and meeting architectural requirements has become a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a prefabricated concrete arch rib plate, wherein rib beams are provided on both sides of a top plate, the top plate is a flat plate, the rib beams on both sides are vertically connected to the top plate, and connecting pieces penetrating the rib beams are provided for easy connection with other components, and a plurality of prestressed tendons are also provided in the rib beams for increasing the bearing capacity of the overall structure; a rib plate is provided on one side of the rib beam, one end of the rib plate is connected to the rib beam, and the other end is connected to the lower plate surface of the top plate, and the rib plate can be used to support the top plate, and also to increase the span of the top plate and increase the size of the component; a cavity is also provided between the top plate, the rib plate and the rib beam, and equipment pipelines can be arranged in the cavity, so that the appearance of the prefabricated arch rib plate can be more neat and beautiful.

[0006] The utility model achieves the above technical purpose through the following technical means.

[0007] A precast concrete arch rib plate comprises a top plate, a rib beam and a rib plate;

[0008] The rib beams are arranged at the lower parts of both sides of the top plate in the longitudinal direction, and are used to support the top plate; the rib plate is arranged between the two rib beams, and the rib plate is integrally formed with the top plate and the rib beams;

[0009] A longitudinally penetrating cavity is formed between the top plate, the rib beams and the rib plates, and a plurality of prestressed tendons are embedded in the rib beams along the longitudinal direction of the top plate.

[0010] Furthermore, the rib is an arc-shaped arch rib or an inclined flat plate.

[0011] Furthermore, the rib height h, the top plate width s, when When the ribs on both sides of the top plate are connected, the other ends thereof intersect and form a smooth transition surface.

[0012] Furthermore, there are two ribs, one end of the rib is connected to the rib beam, and the other end is connected to the top plate, and there is a distance between the ends of the two ribs connected to the top plate.

[0013] Furthermore, it also includes a connecting piece, which is connected to the prestressed tendons and is a profile or a spliced ​​component.

[0014] Furthermore, the outer ends of the arch rib plate are provided with a shelf gap or a shelf in the longitudinal direction on both sides. Furthermore, the cavity is formed by a core-pulling forming, a filling forming, or an airbag forming.

[0015] Furthermore, sealing plates are provided at both ends of the cavity.

[0016] Furthermore, the cavity is filled with lightweight concrete or polymer foam material or mineral wool board or perlite board.

[0017] Furthermore, it also includes a transverse plate, which is connected to the rib plate in the width direction.

[0018] Furthermore, a connecting steel bar is provided on the upper end of the top plate for overlapping with the cast-in-place layer.

[0019] The beneficial effects of the utility model are:

[0020] 1. The precast concrete arch rib plate described in the utility model has rib beams on both sides of the top plate, and rib plates connected to the top plate are arranged on the inner side of the rib beams. Under the joint action of the rib beams and the rib plates, the torsion problem caused by the concentrated load placement at the flange of the traditional double T plate can be eliminated, so that the overall structure is more reasonably and stably stressed.

[0021] 2. The precast concrete arch rib plate described in the utility model can reduce the dead weight of the precast concrete arch rib plate and save building materials by setting a cavity between the top plate, the rib beam and the rib plate, and can also arrange equipment pipelines in the cavity to make the overall structure beautiful and neat.

[0022] 3. The prefabricated concrete arch rib plate described in the utility model is convenient for connecting the prefabricated arch rib plate with other structures by arranging connecting pieces that penetrate the rib beams. The connection is simple and efficient, thereby improving the construction efficiency. A plurality of prestressed tendons are arranged in the rib beams, which can improve the bearing capacity of the structure.

[0023] 4. The precast concrete arch rib plate described in the utility model can not only support the top plate, but also increase the span of the top plate, increase the size of the component, reduce the number of hoisting times, and improve work efficiency by arranging the rib plate on one side of the rib beam and connecting the rib plate to the lower plate surface of the top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are some embodiments of the utility model. For ordinary technicians in this field, it is obvious that other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the prefabricated concrete arch rib slab described in the utility model;

[0026] Figure 2 It is a left view of the precast concrete arch rib plate described in Example 1;

[0027] Figure 3 It is a left view of the precast concrete arch rib plate described in Example 2;

[0028] Figure 4 It is a left view of the precast concrete arch rib plate described in Example 3;

[0029] Figure 5 It is a left view of the precast concrete arch rib plate described in the fourth embodiment;

[0030] Figure 6 It is a left view of the precast concrete arch rib plate with a shelf notch according to the utility model;

[0031] Figure 7 It is a left view of the precast concrete arch rib slab with a shelf according to the utility model;

[0032] Figure 8 It is a structural schematic diagram of the connection between the connector and the prestressed tendons of the utility model;

[0033] In the figure:

[0034] 1-top plate, 2-rib beam, 21-shelf notch, 22-shelf platform, 3-rib plate, 4-connector, 41-angle steel, 42-shear reinforcement, 5-cavity, 6-prestressed tendons, 7-cross plate, 8-connecting reinforcement. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figure 1 As shown, the prefabricated concrete arch rib plate of the utility model comprises a top plate 1, a rib beam 2 and a rib plate 3. The top plate 1 is a flat plate. According to different use requirements, the top plate 1 can be prefabricated in a stacked manner or in a fully prefabricated manner. When the stacked prefabrication is adopted, Figure 7As shown, the upper end of the top plate 1 is provided with connecting steel bars 8, which can be steel bar trusses. A superimposed layer can be cast on the surface of the top plate 1 to make the overall structure better; when the full prefabrication form is adopted, the amount of on-site casting can be reduced, thereby improving the construction efficiency; rib beams 2 arranged vertically to the top plate 1 are provided on both sides of the top plate 1, and rib plates 3 are respectively provided on the inner sides of the rib beams 2 on both sides. The rib plates 3 can be arc plates or other special-shaped plates, one end of the rib plate 3 is connected to the lower plate surface of the top plate 1, and the other end of the rib plate 3 is connected to the beam body of the rib beam 2 on one side. The other end of the rib plate 3 can be connected to the bottom of the beam body of the rib beam 2, or it can be connected to the middle position of the beam body of the rib beam 2, which is determined by the strength and size of its support.

[0039] The lower plate surface of the top plate 1 between the left rib plate and the right rib plate can be an arc surface or a flat plate surface, and the height of the rib beam 2 is kept unchanged. When the ratio of the height h of the rib beam 2 to the width s of the top plate 1 is When the ratio of the height h of the rib beam 2 to the width s of the top plate 1 is , the other end of the left rib plate intersects with the other end of the right rib plate to form a smooth transition surface; the rib beam 2 and the rib plate 3 are used to support the top plate 1. Under the support of the rib beam 2 and the rib plate 3, the length of the prefabricated arch rib plate top plate 1 can be increased, and the longitudinal span of the prefabricated arch rib plate can be increased, thereby increasing the size of the component, reducing the number of hoisting times during the installation process, and improving work efficiency. The longitudinal span is the span in the length direction of the arch rib plate; under the joint support of the rib beam 2 and the rib plate 3, the torsion problem caused by the concentrated load placement at the flange of the traditional double T plate can be eliminated, so that the force of the arch rib plate structure is more reasonable and more stable.

[0040] A left cavity is provided between the top plate 1, the left rib beam and the left rib plate, and a right cavity is provided between the top plate 1, the right rib beam and the right rib plate. The cavity 5 is triangular in shape. On the one hand, when the bearing capacity of the precast concrete arch rib plate reaches the construction requirements, the triangular cavity can save materials and reduce the deadweight of the precast concrete arch rib plate. On the other hand, the complex equipment pipelines can be hidden in the cavity 5 to achieve the overall beauty and neatness. At the same time, the triangular structure has good deformation resistance and can maintain the integrity of the structure to avoid deformation or damage when subjected to external impact and external load. The three corners of the cavity 5 are all made of arc transition, which is not easy to be bumped and damaged during construction. The longest side of the cavity 5 is an arc side, and the curvature of the arc side is consistent with the curvature of the rib plate 3, so that the precast arch rib plate is more evenly stressed. The construction of the cavity 5 can be carried out in a variety of forms, such as airbag cavity, filling cavity or core-pulling cavity, etc. The specific construction method can be selected according to the actual situation and actual needs. Figure 2 As shown, Figure 2This is the left view of the precast concrete arch rib plate described in the utility model. The precast concrete arch rib plate has a left-right symmetrical structure. Connectors 4 are embedded in the upper part of the rib beams on both sides. The connectors 4 can be profiles or spliced ​​structural members, such as I-beams or spliced ​​H-beams or square steels or concrete columns. The two ends of the connectors 4 protrude a certain distance from the rib beams 2 and are used to connect with the base or support. The connectors 4 can also be used to connect the arch rib plate with other components. The use of the connectors 4 can make the connection simple and efficient, and improve the construction efficiency. A number of prestressed tendons 6 are provided on the rib beams on both sides. The prestressed tendons 6 improve the bearing capacity and earthquake resistance of the precast concrete arch rib plate, and can also improve the durability of the precast concrete arch rib plate, making the precast concrete arch rib plate structure more stable and reliable.

[0041] The prestressed tendons 6 are also connected to the connector 4 through a shear member to strengthen the load resistance of the connector 4 and further improve the overall structural strength and stability. Figure 8 As shown, the upper prestressed tendons 6 are connected to the connecting member 4 , a shear-resistant angle steel 41 is provided at the lower end of the connecting member 4 , and the lower prestressed tendons 6 are connected to the connecting member 4 via shear-resistant steel bars 42 .

[0042] like Figure 6 and Figure 7 As shown, the outer ends of the arch rib plates are provided with resting notches 21 or resting platforms 22 in the longitudinal direction on both sides. The resting notches 21 and resting platforms 22 are used to place other arch rib plates between adjacent arch rib plates. A cross plate 7 is also provided. The cross plate 7 is connected to the rib plate 3 in the width direction. The cross plate 7 is used to strengthen the strength and stability of the overall structure.

[0043] Embodiment 1:

[0044] like Figure 1 and Figure 2 As shown, a prefabricated concrete arch rib plate comprises a top plate 1, a rib beam 2, a rib plate 3, a cavity 5 and a connecting member 4. The top plate 1 is a flat plate. Ribs 2 perpendicular to the top plate 1 are arranged on both sides of the top plate 1; rib plates 3 are arranged on the inner side of the rib beam 2. The rib plates 3 are arc-shaped arch ribs. One end of the rib plate 3 is connected to the lower plate surface of the top plate 1, and the other end of the rib plate 3 is connected to the beam body of the rib beam 2. The rib beam 2 and the rib plate 3 jointly support the top plate 1. In this embodiment, the ratio of the height h of the rib beam 2 to the width s of the top plate 1 is There is a certain distance between the other end of the left rib and the other end of the right rib.

[0045] Distance, such as Figure 2As shown, when the height of the rib beam 2 remains unchanged, as the ratio of the height h of the rib beam 2 to the width s of the top plate 1 decreases, the larger the transverse span of the top plate 1, the larger the size of the precast concrete arch rib plate; a connector 4 is embedded in the upper part of the rib beam 2, and the connector 4 is an "I"-shaped steel. The connector 4 runs through the rib beam 2 and protrudes to both sides of the beam body of the rib beam 2, so as to facilitate the connection of the precast concrete arch rib plate with other components. A plurality of prestressed tendons 6 are provided at the lower part of the rib beam 2 to increase the overall structural strength and stability. A cavity 5 is provided between the rib beam 2, the rib plate 3 and the top plate 1. The cavity 5 is roughly in the shape of a right-angled triangle, and the three corners are all transitioned by circular arcs. The hypotenuse is an arc edge, and the curvature of the curvature is consistent with the curvature of the corresponding rib plate 3, so that the rib plate 3 is more evenly stressed. In addition, the cavity 5 can also reduce the dead weight of the precast concrete arch rib plate and save building materials. At the same time, complicated equipment pipelines can also be arranged in the cavity 5 to achieve the beauty and neatness of the overall component.

[0046] Embodiment 2: Figure 3 As shown, a precast concrete arch rib plate comprises a top plate 1, a rib beam 2, a rib plate 3, a connecting piece 4 and a cavity 5. The top plate 1 is a flat plate. Ribs 2 vertically connected to the top plate 1 are arranged on both sides of the top plate 1. Ribs 3 are arranged on the inner side of the rib beam 2. The rib plate 3 is an arc-shaped arch plate. One end of the rib plate 3 is connected to the lower plate surface of the top plate 1, and the other end is connected to the beam body of the rib beam 2. The rib beam 2 and the rib plate 3 jointly support the top plate 1. In this embodiment, the ratio of the height h of the rib beam 2 to the width s of the top plate 1 is The other end of the left rib intersects with the other end of the right rib.

[0047] A smooth transition surface is formed, that is, the left rib plate and the right rib plate form an integrated arched surface. When the height of the rib beam 2 remains unchanged, as the ratio of the height h of the rib beam 2 to the width s of the top plate 1 increases, the curvature of the arched surface becomes higher and the longitudinal span of the top plate 1 becomes smaller. A connecting member 4 is embedded in the upper part of the rib beam 2. The connecting member 4 passes through the rib beam 2 and protrudes to the outside of the rib beam 2, so as to facilitate the connection of the precast concrete arch rib plate with other components. A plurality of prestressed tendons 6 are also provided inside the rib beam 2 to increase the overall structural strength and stability. A cavity 5 is provided between the rib beam 2, the rib plate 3 and the top plate 1. The cavity 5 is roughly in the shape of a right triangle. The three corners are all transitioned by arcs, the hypotenuse is an arc side, and the curvature of the curvature is consistent with the curvature of the corresponding rib plate 3.

[0048] Embodiment three:

[0049] like Figure 4The present invention discloses a precast concrete arch rib plate, comprising a top plate 1, a rib beam 2, a rib plate 3, a connecting piece 4 and a cavity 5. Embodiment 3 is based on Embodiment 1, and changes the shape of the rib plate 3. In this embodiment, the rib plate 3 is an inclined flat plate, and the arc-shaped edge of the cavity 5 is also set as a beveled edge parallel to the rib plate 3.

[0050] Embodiment 4:

[0051] like Figure 5 As shown, in the fourth embodiment, based on the third embodiment, the rib plate 3 is directly connected to the bottom of the rib beam 2, and the other features remain unchanged.

[0052] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0053] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A precast concrete arch rib plate, characterized in that: It comprises a top plate (1), a rib beam (2) and a rib plate (3); The rib beams (2) are arranged at the lower parts of both sides of the top plate (1) in the longitudinal direction, and are used to support the top plate (1); the rib plate (3) is arranged between the two rib beams (2), and the rib plate (3) is integrally formed with the top plate (1) and the rib beams (2); A longitudinally penetrating cavity (5) is formed between the top plate (1), the rib beam (2) and the rib plate (3), and a plurality of prestressed tendons (6) are embedded in the rib beam (2) along the longitudinal direction of the top plate (1).

2. The precast concrete arch rib plate according to claim 1, characterized in that: The rib plate (3) is an arc-shaped arch rib or an inclined flat plate.

3. The precast concrete arch rib plate according to claim 1, characterized in that: The rib beam (2) has a height h and the top plate (1) has a width s. When the top plate (1) is connected to the ribs (3), the other ends of the ribs (3) on both sides of the top plate (1) intersect and form a smooth transition surface.

4. The precast concrete arch rib plate according to claim 1, characterized in that: There are two rib plates (3), one end of the rib plate (3) is connected to the rib beam (2), and the other end is connected to the top plate (1), and there is a distance between the ends of the two rib plates (3) connected to the top plate (1).

5. The precast concrete arch rib plate according to claim 1, characterized in that: It also comprises a connecting piece (4), wherein the connecting piece (4) is connected to the prestressed tendon (6), and the connecting piece (4) is a profile or a spliced ​​component.

6. The precast concrete arch rib plate according to claim 1, characterized in that: Both sides of the outer ends of the arch rib plate are provided with resting notches (21) or resting platforms (22) in the longitudinal direction.

7. The precast concrete arch rib plate according to claim 1, characterized in that: The cavity (5) is formed by a molding method selected from the group consisting of core-pulling molding, filling molding, and airbag molding.

8. The precast concrete arch rib plate according to claim 1, characterized in that: The cavity (5) is triangular in shape, the corners of the cavity (5) are in arc transition, and one side of the cavity (5) is consistent with the curvature or slope of the rib plate (3).

9. The precast concrete arch rib slab according to claim 1, characterized in that: Sealing plates are provided at both ends of the cavity (5).

10. The precast concrete arch rib slab according to claim 1 or 9, characterized in that: The cavity (5) is filled with lightweight concrete or polymer foam material or mineral wool board or pearlite board.

11. The precast concrete arch rib slab according to claim 1, characterized in that: It also comprises a transverse plate (7), wherein the transverse plate (7) is connected to the rib plate (3) in the width direction.

12. The precast concrete arch rib plate according to claim 1, characterized in that: The top plate (1) is provided with a connecting steel bar (8) at the upper end thereof for being overlapped with the cast-in-place layer.

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