An assembled floor of laminated floorboards

Abstract

The utility model provides a kind of assembled floor of laminated board, including floor body and floor truss, floor body is prefabricated concrete slab, floor truss includes at least one truss unit, truss unit includes upper chord, web and lower chord, upper chord is detachably connected on the bottom surface of floor body by threaded connection, the top end of web is detachably connected with upper chord, the bottom end of web is detachably connected with lower chord.The above-mentioned floor truss can reliably support floor body, ensure the structural strength and rigidity of assembled floor, so that the thickness of floor body can be effectively reduced;The assembled floor adopts assembled design, especially the assembled design of floor truss, which can effectively reduce the production, transportation, storage and construction cost, improve the flexibility of assembly construction;Floor truss can be dismantled according to actual working condition and reused, or the upper chord can be retained as a suspended ceiling framework, etc., to reduce the adverse disturbance of the laminated board in later stage project.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and specifically relates to a prefabricated base plate for composite slabs. Background Technology

[0002] Currently, prefabricated buildings are developing rapidly, and composite slab technology has been widely used. Composite slabs generally consist of a lower precast base slab and an upper cast-in-place composite layer. In traditional precast base slabs, steel trusses are embedded on the upper surface of the base slab. The steel trusses are mainly used to improve the overall rigidity of the composite slab.

[0003] While adding steel trusses to the upper surface of the base slab can improve the rigidity and strength of the precast base slab and composite slab, it requires a large amount of steel. Before and during the pouring of the composite layer, the strength and rigidity of the precast base slab itself are still the primary factor, thus requiring a relatively large concrete thickness for the precast base slab. Furthermore, in later finishing works such as ceiling installation and wiring, it is unavoidable to drill holes in the composite slab to install related facilities via bolts, which is difficult to construct and can easily affect the structural performance of the composite slab. Utility Model Content

[0004] In view of the technical defects and drawbacks existing in the prior art, this utility model provides an assembled base plate for composite slabs that overcomes or at least partially solves the above problems. The assembled base plate includes a base plate body, which is a precast concrete slab, and a base plate truss. The base plate truss includes at least one truss unit, which includes an upper chord, a web member, and a lower chord. The upper chord is detachably connected to the bottom surface of the base plate body through a threaded connector. The top end of the web member is detachably connected to the upper chord, and the bottom end of the web member is detachably connected to the lower chord.

[0005] Preferably, there are multiple truss units, and the multiple truss units are connected to form a two-way truss.

[0006] Preferably, the upper chord of each truss unit is integrally formed and connected to form an upper chord frame, and the lower chord of each truss unit is integrally formed and connected to form a lower chord frame. Each web member is detachably connected to the upper chord frame and the lower chord frame, respectively.

[0007] Preferably, each of the truss units includes four edge truss units and multiple middle truss units. The four edge truss units are distributed adjacent to the edges of the base plate body to form a truss frame. Each middle truss unit includes multiple middle truss segments. The middle truss segments are distributed longitudinally and transversely within the truss frame. The edge truss units are connected to adjacent middle truss segments via a first adapter. The four longitudinally and transversely distributed middle truss segments are connected to each other via a second adapter. The first adapter and the second adapter are detachably connected to the bottom surface of the base plate body via threaded connectors.

[0008] Preferably, a T-shaped groove is formed at the bottom of the first adapter, and the side truss unit and the adjacent middle truss segment are respectively inserted into the T-shaped groove and respectively detachably fixed to the first adapter by bolts.

[0009] Preferably, the bottom of the second adapter has a cross-shaped groove, and four central truss segments distributed in a crisscross pattern are respectively inserted into the cross-shaped groove and respectively detachably fixed to the second adapter by bolts.

[0010] Preferably, the edge truss unit includes multiple edge truss segments, the end of the middle truss unit is connected to a segment node of the corresponding edge truss unit, and the first adapter connects the corresponding middle truss segment and the two edge truss segments.

[0011] Preferably, two adjacent side truss units are connected by a third adapter, the bottom of which has an L-shaped groove. The two adjacent side truss units are respectively inserted into the L-shaped groove and are detachably fixed to the third adapter by bolts.

[0012] Preferably, a threaded sleeve is pre-embedded in the base plate body, the threaded connector is screwed to the threaded sleeve on the base plate body, and the upper chord is suspended on the threaded connector.

[0013] Preferably, the web member includes multiple V-shaped web member segments, the open end of the V-shaped web member segment is detachably connected to the upper chord by bolts, and the corner end of the V-shaped web member segment is detachably connected to the lower chord by bolts.

[0014] This utility model has the following beneficial effects:

[0015] The prefabricated base slab provided by this utility model features a base slab truss beneath the slab body. This truss reliably supports the base slab body before and during the pouring of the composite layer, ensuring the structural strength and rigidity of the prefabricated base slab. This method effectively reduces the thickness of the base slab body, lowering the prefabrication cost. The prefabricated base slab employs a prefabricated design, particularly for the base slab truss. The upper chord, web members, and lower chord can be produced, transported, stored, and installed separately, effectively reducing production, transportation, storage, and construction costs, and improving the flexibility of assembly construction. The base slab truss can be dismantled and reused according to actual working conditions, reducing steel consumption. Furthermore, based on the prefabricated connection structure of the upper chord, web members, and lower chord, it is possible to selectively remove only the web members and lower chord, while retaining the upper chord as a ceiling frame or for wiring, reducing adverse disturbances to the composite slab in later stages of construction. Attached Figure Description

[0016] Figure 1 A schematic diagram of a prefabricated base plate using a two-way truss provided for an embodiment of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;

[0018] Figure 3 A schematic diagram of another prefabricated base plate using a two-way truss provided for an embodiment of this utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of the decomposed structure;

[0020] Figure 5 and Figure 6 These are schematic diagrams of the first adapter and the second adapter, respectively.

[0021] Figure 7 and Figure 8 A schematic diagram of the prefabricated base plate using a one-way truss provided for an embodiment of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the present utility model, and not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-8As shown, this utility model embodiment provides an assembled base plate for a composite slab, including a base plate body 1 and a base plate truss 2. The base plate body 1 is a precast concrete slab, and the base plate truss 2 includes at least one truss unit 20. The truss unit 20 includes an upper chord 21, a web member, and a lower chord 22. The upper chord 21 is detachably connected to the bottom surface of the base plate body 1 through a threaded connector 3. The top end of the web member is detachably connected to the upper chord 21, and the bottom end of the web member is detachably connected to the lower chord 22.

[0024] Preferably, the truss unit 20 is a steel truss, and the upper chord 21, web members and lower chord 22 are all steel components.

[0025] In one embodiment, such as Figures 1-4 as well as Figures 7-8 The web members are designed in segments, meaning the web members include multiple V-shaped web member segments 23. This facilitates the production, transportation, storage, and installation of the web members; preferably, as shown below... Figures 1-4 as well as Figures 7-8 The open end of the V-shaped web member segment 23 is detachably connected to the upper chord 21 by bolts, and the corner end of the V-shaped web member segment 23 is detachably connected to the lower chord 22 by bolts. This method can better support the upper chord 21 and the base plate body 1, and correspondingly improve the structural strength and rigidity of the prefabricated base plate.

[0026] The top chord 21 and bottom chord 22 can also be designed in segments. For example, the top chord 21 may include multiple top chord segments, and the bottom chord 22 may include multiple bottom chord segments. This facilitates production, transportation, storage, and installation. When the top chord 21, web members, and bottom chord 22 are all designed in segments, a web member segment 23 can connect a top chord segment and a bottom chord segment. Alternatively, multiple web member segments 23 can be connected between an upper chord segment and a lower chord segment that are directly opposite each other. These configurations will not be listed one by one.

[0027] Preferably, such as Figure 7 and Figure 8 The upper chord 21 is made of channel steel with its groove facing downwards. The web members are inserted into the groove of the upper chord 21. Preferably, bolts are passed through one side of the groove wall of the upper chord 21, the web members, and the other side of the groove wall of the upper chord 21 in sequence, and then locked with nuts.

[0028] Preferably, such as Figure 7 and Figure 8 The lower chord 22 is made of channel steel with its groove facing upward. The web member is inserted into the groove cavity of the lower chord 22. Preferably, bolts are passed through one side groove wall of the lower chord 22, the web member and the other side groove wall of the lower chord 22 in sequence, and then locked with nuts.

[0029] Optionally, such as Figures 1-8A threaded sleeve is pre-embedded in the base plate body 1, and the threaded connector 3 is screwed to the threaded sleeve on the base plate body 1. The upper chord 21 is suspended on the threaded connector 3. The threaded fastener can be a bolt, which passes through the upper chord 21 and then is screwed to the threaded sleeve on the base plate body 1. The upper chord 21 is suspended by the interference between the head of the bolt and the upper chord 21, which is convenient and reliable.

[0030] The prefabricated base plate provided in this embodiment has a base plate truss 2 set below the base plate body 1. The base plate truss 2 can reliably support the base plate body 1 before and during the pouring of the composite layer, ensuring the structural strength and rigidity of the prefabricated base plate. This method can effectively reduce the thickness of the base plate body 1 and reduce the prefabrication cost of the base plate body 1.

[0031] The prefabricated base plate provided in this embodiment adopts a prefabricated design, especially the prefabricated design of the base plate truss 2. The upper chord 21, web members and lower chord 22 can be produced, transported, stored and installed separately, which can effectively reduce production, transportation, storage and construction costs, and improve the flexibility of assembly construction.

[0032] The aforementioned base truss 2 can be dismantled and reused according to actual working conditions, reducing steel consumption. Based on the prefabricated connection structure of the upper chord 21, web members, and lower chord 22, it is possible to selectively remove only the web members and lower chord 22, while retaining the upper chord 21 as a ceiling frame or for wiring, reducing adverse disturbances to the composite slab in later construction.

[0033] In one embodiment, such as Figure 7 and Figure 8 The base plate body 1 has a relatively small area, and a truss unit 20 is set at its bottom. In other words, the base plate body 1 is prefabricated in segments, that is, it includes multiple base plate segments, and each base plate segment is equipped with a truss unit 20.

[0034] In another embodiment, such as Figures 1-4 There are multiple truss units 20, and multiple truss units 20 are connected to form a two-way truss. The two-way truss can better support the base plate body 1 and greatly improve the structural strength and rigidity of the prefabricated base plate.

[0035] For a two-way truss, in one embodiment, such as Figure 1 and Figure 2The upper chord 21 of each truss unit 20 is integrally formed and connected to form an upper chord frame 210, and the lower chord 22 of each truss unit 20 is integrally formed and connected to form a lower chord frame 220. Each web member is detachably connected to the upper chord frame 210 and the lower chord frame 220, respectively. Although this solution has a lower assembly difficulty on site, the upper chord frame 210 and the lower chord frame 220 will be relatively heavy and occupy a lot of space.

[0036] For a two-way truss, in one embodiment, such as Figure 3 and Figure 4 Each of the truss units 20 includes four edge truss units 210 and multiple middle truss units. The four edge truss units 210 are arranged adjacent to the edges of the base plate body 1 to form a truss frame. Each middle truss unit includes multiple middle truss segments 202, which are distributed longitudinally and transversely within the truss frame. The edge truss units 210 are connected to adjacent middle truss segments 202 via a first adapter 41, and the four transversely distributed middle truss segments 202 are connected via a second adapter 42. The first adapter 41 and the second adapter 42 are detachably connected to the bottom surface of the base plate body 1 via threaded connectors 3. In this design, at least the middle truss units are designed in segments, which greatly facilitates the production, transportation, storage, and installation of the truss units 20.

[0037] More preferably, the edge truss unit 210 is also designed in segments, such as... Figure 3 and Figure 4 The edge truss unit 210 includes multiple edge truss segments, and the end of the middle truss unit is connected to a segment node of the corresponding edge truss unit 210. The first adapter 41 connects the corresponding middle truss segment 202 and the two edge truss segments. This not only further facilitates the production, transportation, storage, and installation of the truss unit 20, but also allows the edge truss segments and the middle truss segments 202 to adopt the same structure and specifications, meaning they can be used interchangeably. This enables standardized production of truss segments, eliminating the need for separate transportation, storage, and installation, and significantly reducing production, transportation, storage, and construction costs.

[0038] The segmented design of the truss unit 20 not only facilitates the production, transportation, storage and installation of the truss unit 20, but also allows for the addition or subtraction of truss segments to meet the support requirements of different specifications of the base plate body 1. Even if there are uneven surfaces or insufficient manufacturing precision of the upper chord 21 / base plate body 1, the multi-truss segment structure can still ensure that the truss unit 20 reliably supports the base plate body 1.

[0039] Generally, the base plate body 1 is square, with two parallel first sides and two parallel second sides. Preferably, in each of the above-mentioned truss units 20, the length direction of some truss units 20 is parallel to the length direction of the first side, and the length direction of the remaining truss units 20 is parallel to the length direction of the second side. That is, in the four side truss units 210, two side truss units 210 are longitudinally distributed with their length direction parallel to the length direction of the first side, and the other two side truss units 210 are transversely distributed with their length direction parallel to the length direction of the second side; in each of the above-mentioned longitudinally and transversely distributed middle truss units, the length direction of the longitudinally distributed middle truss units is parallel to the length direction of the first side, and the length direction of the transversely distributed middle truss units is parallel to the length direction of the second side.

[0040] In one embodiment, such as Figure 4 and Figure 5 The bottom of the first adapter 41 has a T-shaped groove 410. The side truss unit 210 and the adjacent middle truss segment 202 are respectively inserted into the T-shaped groove 410 and respectively detachably fixed to the first adapter 41 by bolts. When the first adapter 41 connects one middle truss segment 202 and two side truss segments at the same time, the two side truss segments and one middle truss segment 202 are respectively inserted into the T-shaped groove 410.

[0041] The first adapter 41 mentioned above can be made of T-shaped steel profile.

[0042] Taking the detachable connection between the side truss unit 210 and the first adapter 41 via bolts as an example, the bolt enters from one side of the first adapter 41, passes through the side truss unit 210, and then passes through the other side of the first adapter 41, before being locked with a nut. When using bolts to connect the web member to the corresponding upper chord member 21, it is preferable to use the same bolt to sequentially pass through one side wall of the first adapter 41, one side groove wall of the upper chord member 21, the web member, the other side groove wall of the upper chord member 21, and the other side wall of the first adapter 41, before locking with a nut. This reduces the number of bolts and improves on-site assembly efficiency.

[0043] In one embodiment, such as Figure 4 and Figure 6The bottom of the second adapter 42 has a cross-shaped groove 420. Four intersecting central truss segments 202 are respectively inserted into the cross-shaped groove 420 and detachably fixed to the second adapter 42 by bolts. The second adapter 42 can be made of cross-shaped steel profile. The connection between the second adapter 42 and the central truss segments 202 can be referenced to the connection structure between the first adapter 41 and the side truss unit 210, and will not be elaborated here.

[0044] In one embodiment, such as Figure 4 Adjacent side truss units 210 are connected by a third adapter 43. The bottom of the third adapter 43 has an L-shaped groove. The two adjacent side truss units 210 are respectively inserted into the L-shaped groove and detachably fixed to the third adapter 43 by bolts. The third adapter 43 can be made of L-shaped steel profile. The connection between the third adapter 43 and the side truss unit 210 can be referenced to the connection structure between the first adapter 41 and the side truss unit 210, and will not be elaborated here.

[0045] In addition, the upper surface of the base plate body 1 may or may not be provided with a shear connection structure, which may include, but is not limited to, the use of studs.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated base plate for a composite slab, comprising a base plate body, wherein the base plate body is a precast concrete slab, characterized in that, It also includes a base plate truss, which includes at least one truss unit. The truss unit includes an upper chord, a web member, and a lower chord. The upper chord is detachably connected to the bottom surface of the base plate body via a threaded connector. The top end of the web member is detachably connected to the upper chord, and the bottom end of the web member is detachably connected to the lower chord.

2. The assembled base plate of the composite plate according to claim 1, characterized in that: There are multiple truss units, and the multiple truss units are connected to form a two-way truss.

3. The assembled base plate of the composite plate according to claim 2, characterized in that: The upper chord of each truss unit is integrally formed and connected to form an upper chord frame, and the lower chord of each truss unit is integrally formed and connected to form a lower chord frame. Each web member is detachably connected to the upper chord frame and the lower chord frame, respectively.

4. The assembled base plate of the composite plate according to claim 2, characterized in that: Each of the truss units includes four edge truss units and multiple middle truss units. The four edge truss units are distributed adjacent to the edges of the base plate body to form a truss frame. Each middle truss unit includes multiple middle truss segments. The middle truss segments are distributed longitudinally and transversely within the truss frame. The edge truss units are connected to adjacent middle truss segments via a first adapter. The four longitudinally and transversely distributed middle truss segments are connected to each other via a second adapter. The first adapter and the second adapter are detachably connected to the bottom surface of the base plate body via threaded connectors.

5. The assembled base plate of the composite plate according to claim 4, characterized in that: The bottom of the first adapter has a T-shaped groove, and the side truss unit and the adjacent middle truss segment are respectively inserted into the T-shaped groove and respectively detachably fixed to the first adapter by bolts.

6. The assembled base plate of the composite plate according to claim 4, characterized in that: The bottom of the second adapter has a cross-shaped groove, and four central truss segments distributed in a crisscross pattern are respectively inserted into the cross-shaped groove and respectively detachably fixed to the second adapter by bolts.

7. The assembled base plate of the composite plate according to claim 4, characterized in that: The edge truss unit includes multiple edge truss segments, and the end of the middle truss unit is connected to a segment node of the corresponding edge truss unit. The first adapter connects the corresponding middle truss segment and two edge truss segments.

8. The assembled base plate of the composite plate according to claim 4, characterized in that: Two adjacent side truss units are connected by a third adapter. The bottom of the third adapter has an L-shaped groove. The two adjacent side truss units are respectively inserted into the L-shaped groove and are detachably fixed to the third adapter by bolts.

9. The assembled base plate of the composite plate according to claim 1, characterized in that: A threaded sleeve is pre-embedded in the base plate body, and the threaded connector is screwed to the threaded sleeve on the base plate body. The upper chord is suspended on the threaded connector.

10. The assembled base plate of the composite plate according to claim 1, characterized in that: The web member includes multiple V-shaped web member segments. The open end of each V-shaped web member segment is detachably connected to the upper chord by bolts, and the corner end of each V-shaped web member segment is detachably connected to the lower chord by bolts.

Images