Multi-span continuous prefabricated laminated slab with detachable horizontal supporting trusses

Abstract

The utility model relates to a multi-span continuous prefabricated laminated slab with detachable horizontal supporting trusses, which relates to the technical field of building construction and comprises a concrete bottom plate, upper steel bar trusses are arranged above the concrete bottom plate at intervals, and the horizontal supporting trusses are arranged below the concrete bottom plate at intervals. The upper steel bar trusses and the horizontal supporting trusses are alternately arranged in the length direction of the concrete slab to form an alternate structure, and large-span continuous bearing and overall stress are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a detachable multi-span continuous prefabricated composite board with a horizontal supporting truss. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The traditional reinforced truss composite slab is composed of a lower prefabricated base plate and an upper truss. The main function of the truss is to improve the overall stiffness of the composite slab.

[0004] A composite panel with a detachable supporting truss having publication number CN117702976A has a supporting truss arranged at the bottom of the composite panel, which to a certain extent avoids the difficulty of construction of the composite panel in production and construction, greatly improves the connection stiffness, reduces the erection of supports and scaffolding, and simplifies the pipeline installation and binding process.

[0005] Although the above-mentioned composite plate solves the stress mode of the composite plate, there are still the following problems in practical application:

[0006] In order to connect multiple continuous composite slabs, when vertical supports are erected within the span of a large-span continuous structure space and structural supports such as beams are installed within the span, the force mode of the composite slab changes, negative bending moments are generated at the supports within the span, and cracking of the composite slab is inevitable, making it impossible to achieve large-scale promotion and application in large-span continuous structure spaces. Utility Model Content

[0007] The utility model aims to provide a detachable multi-span continuous prefabricated composite plate with a horizontal support truss, which can solve at least one of the above-mentioned technical problems.

[0008] To achieve the above-mentioned purpose, the utility model proposes a multi-span continuous prefabricated composite slab with detachable horizontal support trusses, including a concrete base plate, upper steel trusses are arranged at intervals above the concrete base plate, and horizontal support trusses are arranged at intervals below the concrete slab. In the vertical projection toward the ground, the upper steel trusses and the horizontal support trusses are alternately arranged along the length direction of the concrete slab.

[0009] It is further configured that the upper steel truss is integrally cast with the concrete bottom plate, and the upper steel truss is exposed from the upper surface of the concrete bottom plate.

[0010] It is further configured that the steel plate connector on the horizontal support truss is detachably connected to the embedded parts at corresponding positions in the concrete base plate by bolts.

[0011] It is further configured that a plurality of upper steel bar trusses are evenly distributed along the length direction of the concrete bottom plate, and a plurality of horizontal support trusses are evenly distributed along the length direction of the concrete bottom plate.

[0012] It is further configured that a beam structure support is arranged between the horizontal support trusses, and a pair of beam structure supports are arranged at both ends of the horizontal support trusses and on one side of the horizontal support trusses.

[0013] It is further configured that an independent vertical tripod-type support or an independent vertical horizontal rod-type support is provided below the beam structure support of the horizontal support truss.

[0014] It is further configured that an independent vertical horizontal rod type support or an independent vertical tripod type support is provided below the beam structure supports at both ends between the horizontal support trusses.

[0015] It is further configured that the upper surface of the concrete bottom plate is provided with a rough surface.

[0016] It is further configured that a plurality of embedded parts arranged at equal intervals are provided in the concrete base plate, and the embedded parts are tied and fixed to the longitudinal steel bars and the transverse steel bars.

[0017] It is further configured that two sides of the transverse reinforcement can selectively extend out of the outer edge of the concrete bottom plate.

[0018] Beneficial effects of one or more of the above technical solutions:

[0019] The utility model arranges upper steel bar trusses at intervals above the concrete slab, arranges horizontal support trusses at intervals below the concrete slab, installs beam structure supports between the horizontal support trusses, arranges upper steel bar trusses at corresponding structure support positions and above the concrete slab, and in the vertical projection toward the ground, the upper steel bar trusses are located in the intervals of the horizontal support trusses to form an alternating structure, and horizontal support trusses and upper steel bar trusses are staggered at the upper and lower sides of the concrete slab. The upper steel bar trusses are arranged at corresponding positions of the supports within the span to resist the negative bending moment of the slab, avoid cracking of the composite slab, improve the continuous load-bearing capacity and overall stress of a large span, and realize the load-bearing capacity of a large span continuous structural space. The upper steel bar trusses are arranged only at corresponding positions of the supports within the span. Compared with the current mainstream steel bar truss composite slab steel bar truss full-length arrangement, the cost of steel bar materials is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification of this application are used to further understand the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute limitations on the present application.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2It is a side view of the utility model.

[0023] Figure 3 It is the front view of the utility model.

[0024] Figure 4 It is a top view of the utility model.

[0025] Figure 5 It is a bottom view of the utility model.

[0026] Figure 6 It is a schematic diagram of the installation structure of the utility model with the horizontal rod support and the tripod support.

[0027] Figure 7 This is a schematic diagram of the installation structure of three concrete base plates of the utility model.

[0028] Figure 8 It is a schematic diagram of the installation structure of three concrete base plates, horizontal rod supports and tripod supports of the utility model.

[0029] Fig. 9 It is a structural schematic diagram of the independent vertical horizontal rod support of the utility model.

[0030] Fig.10 It is a structural schematic diagram of the independent vertical tripod support of the utility model.

[0031] Fig.11 It is a structural schematic diagram of the independent vertical tripod support of the utility model.

[0032] In the figure, 101, large-span concrete base plate; 102, horizontal support truss; 103, upper steel truss; 104, bolts; 105, longitudinal steel bars; 106, transverse steel bars; 107, steel plate connectors; 108, embedded parts; 109, independent vertical horizontal rod support; 110, independent vertical tripod support; 111, rib beam; 112, independent steel support column; 113, horizontal rod; 114, tripod; 115, beam structure support. DETAILED DESCRIPTION

[0033] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0034] The utility model proposes a horizontal support truss detachable multi-span continuous prefabricated composite plate, referring to Figures 1 to 5 , including a concrete base slab 101, upper steel trusses 103 are arranged at intervals above the concrete base slab 101, and horizontal support trusses 102 are arranged at intervals below the concrete slab. In a vertical projection toward the ground, the upper steel trusses 103 and the horizontal support trusses 102 are alternately arranged along the length direction of the concrete slab.

[0035] The upper steel truss 103 is integrally cast with the concrete bottom plate 101 , and the upper steel truss 103 is exposed from the upper surface of the concrete bottom plate 101 . The upper steel truss 103 is integrally cast with the concrete bottom plate 101 , and is a non-detachable structure.

[0036] The steel plate connector 107 on the horizontal support truss 102 is detachably connected to the embedded part 108 at the corresponding position in the concrete bottom plate 101 by bolts 104, and the steel plate connector 107 on the horizontal support truss 102 is detachably connected to the embedded part 108 at the corresponding position in the concrete bottom plate 101 by bolts 104 to form a temporary horizontal support structure. The horizontal support truss is assembled with the concrete bottom plate at the production site, ensuring standardized production in the factory and reducing the erection of scaffolding or temporary support at the construction site; and the horizontal support truss structure provided by the utility model is easy to disassemble and assemble, and can be reused, which greatly reduces the cost

[0037] Several upper steel trusses 103 are evenly distributed along the length direction of the concrete base plate 101. Several horizontal support trusses 102 are evenly distributed along the length direction of the concrete base plate 101. The spacing arrangement of the horizontal support trusses 102 along the width direction of the concrete base plate 101 is consistent with the upper steel trusses 103. The spacing arrangement of the two corresponds to each other, the spacing is 400-1000mm, and the distance to the side edge is not more than 300mm. The arrangement improves the overall strength of the concrete base plate 101.

[0038] like Figure 6 As shown, the utility model provides a structural form in which a horizontal support truss detachable large-span continuous prefabricated composite plate is applied to a large-span continuous structural space and an independent vertical support system is used as the support within the span.

[0039] like Figure 8 As shown, the independent vertical support system in the large-span continuous structure space is divided into independent vertical horizontal rod support 109 and tripod support 110. The independent vertical horizontal rod support 109 or the independent vertical tripod support 110 can be selectively arranged at the corresponding position of the bottom of the concrete base plate 101 where vertical support needs to be set up.

[0040] Beam structure supports 115 are disposed between the horizontal support trusses 102 . A pair of beam structure supports 115 are disposed at both ends of the horizontal support trusses 102 and on one side of the horizontal support trusses 102 .

[0041] like Fig. 9 , Fig.10 and Fig.11 As shown, the independent vertical horizontal rod support 109 is composed of a ribbed beam 111, an independent steel support column 112 and a horizontal rod 113; the independent vertical tripod support 110 is composed of a ribbed beam 111, an independent steel support column 112 and a tripod 114.

[0042] An independent vertical tripod-type support 108 is provided below the beam structure support 115 of the horizontal support truss 102 , and an independent vertical horizontal rod-type support 109 is provided below the beam structure support 115 at both ends of the horizontal support truss 102 to support the structure support 115 .

[0043] The upper end surface of the concrete base plate 101 is provided with a rough surface. The upper end surface of the concrete base plate 101 is provided with a rough surface. The forms of the rough surface include but are not limited to a washed rough surface and a roughened rough surface. The rough surface is conducive to the connection of other building materials on the upper end surface of the concrete base plate 101.

[0044] A number of embedded parts 108 arranged at equal intervals are provided in the concrete base 101. The embedded parts 108 are tied and fixed to the longitudinal steel bars 105 and the transverse steel bars 106. Prestressed steel strands or prestressed steel bars can be used as the longitudinal steel bars 105 and the transverse steel bars 106. Prestress is applied to the concrete of the concrete base 101 in advance to improve its crack resistance. In addition, this measure can also reduce the thickness of the concrete base 101 and the weight of the overall structure, thereby reducing costs and giving full play to the stress-bearing performance of the structure.

[0045] Both sides of the transverse reinforcement 106 may selectively extend out of the outer edge of the concrete bottom plate 101 to form an extension portion; or may selectively not extend out of the outer edge of the concrete bottom plate 101 .

[0046] like Figure 7 As shown, when a horizontal support truss detachable large-span continuous prefabricated composite slab is used in a large-span continuous structure space with multiple intra-span beam structure supports, in order to ensure that the horizontal support truss detachable large-span continuous prefabricated composite slab and the beam structure support form a relatively stable connection, embedded parts 108 are arranged at the corresponding positions of the beam structure supports on the horizontal support truss detachable large-span continuous prefabricated composite slab, and are formed into a whole by bolts 104.

[0047] A number of embedded parts 108 arranged at equal intervals are provided in the concrete base 101. The embedded parts 108 are tied and fixed to the longitudinal steel bars 105 and the transverse steel bars 106. The embedded parts 108 may be arranged at equal intervals along the length direction of the concrete base 101 according to the span of the concrete base 101. No embedded parts 108 are provided at the position of the supports within the span. The embedded parts 108 are arranged at equal intervals along the length direction of the concrete base 101. The distance between every two embedded parts 108 is not greater than 600 mm to ensure the shear resistance of the structure.

[0048] The upper part of the embedded part 108 is higher than the upper top surface of the concrete base plate 101 by a certain height, and this height is not specifically limited, and needs to meet the requirements of anchoring, shear resistance of the bolt 104, etc.

[0049] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A multi-span continuous prefabricated composite slab with detachable horizontal support trusses, characterized in that: It includes a concrete base plate, upper steel bar trusses are arranged at intervals above the concrete base plate, and horizontal support trusses are arranged at intervals below the concrete plate. In a vertical projection toward the ground, the upper steel bar trusses and the horizontal support trusses are alternately arranged along the length direction of the concrete plate.

2. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1 is characterized in that: The upper steel truss is cast integrally with the concrete base slab, and the upper steel truss is exposed from the upper surface of the concrete base slab.

3. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1 is characterized in that: The steel plate connectors on the horizontal support trusses are detachably connected to the embedded parts at corresponding positions in the concrete bottom plate through bolts.

4. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1 is characterized in that: The upper steel bar trusses are evenly distributed along the length direction of the concrete bottom plate, and the horizontal support trusses are evenly distributed along the length direction of the concrete bottom plate.

5. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1 is characterized in that: A beam structure support is arranged between the horizontal support trusses, and a pair of beam structure supports are arranged at both ends of the horizontal support trusses and on one side of the horizontal support trusses.

6. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 5 is characterized in that: An independent vertical tripod-type support or an independent vertical horizontal rod-type support is arranged below the beam structure support of the horizontal supporting truss.

7. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 5 is characterized in that: Independent vertical horizontal rod type supports or independent vertical tripod type supports are arranged under the beam structure supports at both ends between the horizontal support trusses.

8. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1 is characterized in that: The upper surface of the concrete bottom plate is provided with a rough surface.

9. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 1, characterized in that: A plurality of embedded parts arranged at equal intervals are arranged in the concrete bottom plate, and the embedded parts are tied and fixed to the longitudinal steel bars and the transverse steel bars.

10. The horizontal support truss detachable multi-span continuous prefabricated composite slab according to claim 9, characterized in that: Both sides of the transverse reinforcement may selectively extend beyond the outer edge of the concrete bottom plate.

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