Laminated slab, truss rib for laminated slab, and composite truss

Abstract

The utility model provides a laminated slab, a truss rib for the laminated slab and a combined truss, and belongs to the field of fabricated buildings, and the laminated slab comprises a bottom plate, the truss rib and a cast-in-place layer, wherein the truss ribs are arranged on the bottom plate and formed on the plate surface of the bottom plate, and the truss ribs comprise combined trusses and concrete ribs; wherein the combined truss at least comprises two structural truss sections and a steel group section, the steel group section is connected between the two structural truss sections to form a full-length structure, the steel group section forms a pipe penetrating space for a pipeline to penetrate through, and concrete ribs are formed on the structural truss sections to form concrete rib sections. Further, each structural truss section comprises an upper chord, a web member and a lower chord, and the lower chords in the at least two structural truss sections are connected through a steel group section; and the cast-in-place layer is cast on the bottom plate and at least covers the truss ribs.

Description

Technical Field

[0001] The utility model belongs to the field of assembled buildings, and in particular relates to a composite plate, a truss rib for the composite plate and a combined truss. Background Art

[0002] Concrete rib composite slabs are gradually being used in the field of prefabricated buildings due to their advantages such as good vertical stiffness, convenient construction, and cost savings. However, concrete rib composite slabs still have the following problems that hinder their large-scale promotion:

[0003] Due to the existence of ribs, there are great problems in the on-site laying of electromechanical pipelines. The existing technology generally directly opens holes on the ribs, but the low strength of the concrete ribs limits the size of the holes and affects the shear and compression resistance of the ribs.

[0004] Since the concrete ribs and the bottom plate are cast in two layers, they are easy to peel off during transportation and construction.

[0005] The bearing capacity of the floor slab in the direction perpendicular to the ribs is poor, and cracks along the ribs are prone to occur.

[0006] Therefore, this application arises as the times require. Utility Model Content

[0007] One purpose of the utility model is to provide a composite plate which is convenient for threading and laying pipes and has a stable structure;

[0008] The second object of the utility model is to provide an ultra-wide composite board without longitudinal cracking.

[0009] The third object of the utility model is to provide a truss rib for a composite plate which is convenient for threading and laying pipes and has good rigidity;

[0010] The fourth object of the utility model is to provide a composite truss for composite plates which has good rigidity and is easy to lay pipelines.

[0011] In order to solve one or both of the above purposes, the utility model first provides a composite board, characterized in that it includes:

[0012] Base plate;

[0013] Truss ribs, the truss ribs are arranged on the bottom plate and formed on the plate surface of the bottom plate, the truss ribs include composite trusses and concrete ribs; the composite truss includes at least two structural truss sections and a steel group section, the steel group section is connected between the two structural truss sections to form a through-length structure, the steel group section is formed with a pipe-through space for pipelines to be laid out, and the concrete ribs are formed on the structural truss section to form a concrete rib section; the structural truss section includes an upper chord, a web member and a lower chord, and the lower chords of at least two of the structural truss sections are connected through the steel group section;

[0014] A cast-in-place layer is cast on the base plate and at least covers the truss ribs.

[0015] Preferably, it further comprises a transverse frame, the bottom of which is buried in the bottom plate, and the top of which spans the steel segment and / or the concrete rib segment.

[0016] Preferably, the transverse frame at least includes a frame upper chord and a frame web, and a portion of the frame webs in the transverse frame spanning the concrete rib segment form a web avoidance opening, and the web avoidance opening is located to avoid the upper chord.

[0017] Preferably, the steel segment includes a top body and two side supports; the bottoms of the two side supports are buried in the bottom plate, the tops are supported on the top body, and the pipe-through space is formed between the two side supports.

[0018] Preferably, the side supports are vertical plate supports, and the bottom of the vertical plate supports has a space for the lower chord to pass through.

[0019] Preferably, the side support is an inclined plate support, and the bottom of the inclined plate support has a space for the lower chord to pass through.

[0020] Preferably, the side support comprises two side panels, one end of the two side panels converges and the other end expands outward to present an angle plate structure, and the convergence points of the two side supports are arranged facing each other; the bottom of the side panel has a space for the lower chord to pass through

[0021] Preferably, the top body is a top plate, and the elevation of the top plate is higher than that of the concrete rib segment.

[0022] Preferably, the upper chord of the structural truss section in the concrete rib section is fixed to the side support.

[0023] The technical effects of the above technical solution of the utility model come from one or more of the following combinations:

[0024] The present application arranges truss ribs of concrete rib segments and steel segments, forms a larger pipe-passing space through the steel segments, and improves the ability to resist compression or tension, thereby maintaining the consistency of the bearing capacity of the composite plate ribs, so that the composite plate will not have a reduced bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe-passing space and maintaining the composite plate structure without weak bending links; more importantly, the lower chord of the structural truss in the concrete rib segment passes through the steel segment to form an integral whole, so that the structural rigidity of the truss rib is better, and the steel segment will not be damaged during installation and transportation.

[0025] A transverse frame and truss ribs can be arranged to form a bidirectional plate, and the bottom of the web member of the transverse frame is hooked on the structural ribs of the bottom plate, thereby realizing the operable installation of the transverse frame.

[0026] The shear force of the composite slab is large at both ends and small in the middle; the steel segment is arranged in the area on the bottom plate where the shear force is smaller than the end (i.e., symmetrical along the center line as described in this article and within the range of no more than 2 / 3 of the total slab length), that is, close to the middle, which just matches the characteristics of the steel segment having good longitudinal force transmission capacity along the floor slab but poor vertical shear resistance.

[0027] The transverse frame can span the steel segment and the concrete rib segment; when spanning the concrete rib segment, the web member of the transverse frame is partially buried in the concrete rib segment to form a tie; at the same time, the web member forms a web member avoidance to facilitate the side formwork support for the pouring of the concrete rib segment. When spanning the steel segment, the web member is located exactly in the inverted U-shaped groove of the steel rib.

[0028] The steel segment is fixed to two adjacent concrete rib segments by bolts. When the concrete rib segments are poured, the steel segment can be used as an end form of the concrete rib segments.

[0029] The top of the steel segment can resist compression or tension, and the two sides serve as the end molds of the concrete rib segment. The internal space naturally forms a pipe-through space, and the space is sufficient for the arrangement of conventional pipelines, and it is convenient for pipelines to pass through at a certain angle, unlike the traditional concrete rib openings that can only be in a straight line perpendicular to the rib direction; it is more convenient for wiring. For example, for a conventional 130mm floor slab, the bottom plate thickness is 35mm, the rib top space is 25mm, and the steel plate thickness is 10mm, then the pipe-through space can reach 60mm. However, due to the need to maintain the continuity of the force transmission of the concrete ribs, the pipe-through space of conventional concrete rib composite slabs can only be opened at a height of 30mm. The actual pipe-through difficulty on site is very high, resulting in the inability to promote the use of conventional (truss-free) concrete rib slabs.

[0030] Compared with the traditional concrete rib composite slab, the steel frame of the present application connects the bottom plate with the secondary poured concrete ribs, preventing the concrete ribs from peeling off from the bottom plate; at the same time, the setting of the transverse frame makes the composite slab have a strong transverse bending resistance, and can produce composite slabs with a width of more than 4m, avoiding the occurrence of floor joints in the room. The width of conventional composite slabs generally does not exceed 3m, which cannot reach the width of the room span, resulting in floor joints in the room.

[0031] In order to solve the above three purposes, the utility model provides a truss rib for a composite plate, characterized in that it at least includes:

[0032] A combined truss, the combined truss comprising at least two structural truss sections and a steel group section, the steel group section being connected between the two structural truss sections to form a through-length structure, the steel group section forming a pipe-through space for laying out pipelines, the structural truss section comprising an upper chord, a web member and a lower chord, the lower chord of at least two of the structural truss sections being connected through the steel group section;

[0033] Concrete ribs; the concrete ribs are formed on the structural truss sections to form concrete rib sections.

[0034] The technical effects of the above technical solution of the utility model are as follows:

[0035] The truss rib formed by combining concrete rib segments and steel segments in the present application, when used for composite plates, forms a larger pipe-passing space through the steel segments, and improves the ability to resist compression or tension, thereby maintaining the consistency of the bearing capacity of the composite plate ribs, so that the composite plate will not have a reduced bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe-passing space and maintaining the composite plate structure without weak bending links; more importantly, the lower chord of the structural truss in the concrete rib segment is connected as a whole through the steel segments, so that the structural rigidity of the truss rib is better, and the steel segments will not be damaged during installation and transportation.

[0036] In order to solve the above four purposes, the utility model provides a combined truss for composite plates, characterized in that it includes at least two structural truss sections and a steel group section, the steel group section is connected between the two structural truss sections to form a through-length structure, the steel group section forms a pipe-through space for laying out pipelines, the structural truss section includes an upper chord, a web and a lower chord, and the lower chords of at least two of the structural truss sections are connected through the steel group section.

[0037] Preferably, the composite truss for the composite plate is characterized in that the lower chords in at least two of the structural truss segments are connected through the steel group segment.

[0038] Preferably, the lower chords in at least two of the structural truss segments are connected to two sides of the steel segment, and the steel segment has force transmission connectors for transmitting force to the lower chords on both sides.

[0039] The technical effects of the above technical solution of the utility model are as follows:

[0040] When the present application is used for a composite plate, a larger pipe-passing space is formed by the steel segments, and the compression or tension resistance is improved, thereby maintaining the consistency of the bearing capacity of the composite plate ribs, so that the composite plate will not have a reduced bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe-passing space and maintaining the composite plate structure without weak bending links; more importantly, the lower chord of the structural truss is connected as a whole by the steel segments, so that the structural rigidity of the truss ribs is better, and the steel segments will not be damaged during installation and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The schematic diagram of the structure of the prefabricated part in the composite board of the utility model is expressed.

[0042] Figure 2 A partial enlarged view of the prefabricated part of the composite panel of the utility model is expressed.

[0043] Figure 3 Another perspective structural schematic diagram of the prefabricated part of the composite panel of the utility model is expressed.

[0044] Figure 4 The steel structure layout diagram of the composite plate of the utility model is expressed.

[0045] Figure 5 A partial enlarged view of the steel structure in the composite plate of the utility model is expressed.

[0046] Figure 6 A structural schematic diagram of the combined truss in the utility model is expressed.

[0047] Figure 7 Another structural schematic diagram of the combined truss in the utility model is expressed.

[0048] Figure 8 Another structural schematic diagram of the combined truss in the utility model is expressed.

[0049] Fig. 9 Expressed Figure 8 Schematic diagram of the structure of the Sinosteel group.

[0050] Fig.10 The schematic diagram of the structure of the force transmission connecting piece in the utility model is expressed. DETAILED DESCRIPTION

[0051] The following description is given to enable those skilled in the art to implement and use the utility model and incorporate it into specific application contexts. Various modifications, as well as various uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Thus, the utility model is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0052] In the following detailed description, many specific details are set forth to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the practice of the present invention need not be limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without detailed display to avoid obscuring the present invention.

[0053] The reader is reminded of all documents and literature filed simultaneously with this specification and open to public inspection, and the contents of all such documents and literature are incorporated herein by reference. Unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) can be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features.

[0054] Note that, where used, the symbols left, right, front, back, top, bottom, forward, reverse, clockwise and counterclockwise are used only for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or direction between the various parts of the object. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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; it can be a direct connection, or it can be indirectly connected 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.

[0056] Note that, in the case of use, further, preferably, further and more preferably are simple beginnings for explaining another embodiment based on the previous embodiment, and the content of further, preferably, further or more preferably followed by the above embodiment is combined with the previous embodiment as a complete composition of another embodiment. Several further, preferably, further or more preferably settings followed by the same embodiment can be arbitrarily combined to form another embodiment.

[0057] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary and should not be construed as limiting the scope of protection of the present invention.

[0058] Embodiment 1:

[0059] First, this embodiment introduces the drawings one by one:

[0060] Figure 1 The structural schematic diagram of the prefabricated part of the composite slab is shown; the cast-in-place layer is eliminated for easier display, and some concrete ribs of the concrete rib segments are eliminated for easier display of the structural truss segments within the concrete ribs.

[0061] Figure 2 Shown Figure 1 The partial enlarged view is intended to show the positional relationship between the steel segment, concrete rib segment and transverse frame.

[0062] Figure 3 Another structural diagram of the prefabricated part is shown.

[0063] Figure 4 The concrete of the bottom slab is omitted, showing the arrangement of the transverse and longitudinal reinforcement of the bottom slab.

[0064] Figure 5 Shown Figure 4 The partially enlarged view is intended to show the positional relationship between the steel segment and the structural truss segment.

[0065] Figure 6 The side supports of the steel segments are shown as vertical plate supports.

[0066] Figure 7 The side supports of the steel segment are shown as inclined plate supports.

[0067] Figure 8 The side panels of the steel segment are shown to be triangular structures.

[0068] Fig. 9 Shown Figure 8 Schematic diagram of the structure of the Sinosteel group.

[0069] Fig.10 by Figure 6 Based on this, another structural form of the lower chord and steel segment is shown.

[0070] See also Figure 1 to Figure 9 The utility model first provides a composite plate, the structure of which includes a bottom plate 1, a truss rib (including Figure 1 The steel group section 2 and the concrete rib section 3) and the cast-in-place layer; wherein the truss rib is arranged on the bottom plate 1 and formed on the plate surface of the bottom plate 1, and the truss rib includes a combined truss (including Figure 1 The structure truss section 31 and steel group section 2) and concrete rib 32 in the structure truss; wherein the composite truss comprises at least two structure truss sections 31 and one steel group section 2, the steel group section 2 is connected between the two structure truss sections 31 to form a through-length structure, the steel group section 2 is formed with a pipe-through space 20 for the pipeline to be laid out, and the concrete rib 32 is formed on the structure truss section 31 to form a concrete rib section 3. Further, the structure truss section 31 comprises an upper chord 311, a web member 312 and a lower chord 313, and the lower chord 313 of at least two structure truss sections 31 is connected through the steel group section 2; the cast-in-place layer is cast on the bottom plate 1 and at least covers the truss rib.

[0071] It should be noted that the present embodiment does not include diagrams and drawings of the cast-in-place layer, as the cast-in-place layer is a conventional structure of the composite slab. The present embodiment aims at improving the structure of the prefabricated part. For the convenience of better display and expression, the cast-in-place layer is not shown in drawings, but those skilled in the art should be aware of this.

[0072] This solution is used as a one-way plate when only truss ribs are provided. As a preferred implementation of this embodiment, this solution can also be used as a two-way plate. Specifically, this embodiment provides a specific diagram of the two-way plate structure. Please refer to Figure 1 , Figure 2 Figure 3 and Figure 4 This embodiment further includes a transverse frame 5, the bottom of which is buried in the bottom plate 1, and the top of which is straddling the steel segment 2 and / or the concrete rib segment 3. Here, "and / or" is interpreted as the top of the transverse frame 5 straddling the steel segment 2; or the top of the transverse frame 5 straddling the concrete rib segment 3; or when there are multiple transverse frames 5, the top of one of the transverse frames 5 straddling the steel segment 2, and the top of one of the transverse frames 5 straddling the concrete rib segment 3.

[0073] Furthermore, when the composite plate is used as a bidirectional plate, the truss rib is defined as a longitudinal truss rib. It should be noted that the "longitudinal" and "transverse" in this embodiment are relative concepts and are not absolute restrictions.

[0074] Please combine Figure 1~Figure 3 The concrete rib segment 3 includes a structural truss segment 31 and a concrete rib 32. The concrete rib 32 is formed on the plate surface of the bottom plate 1 through the structural truss segment 31, and the structural truss segment 31 is connected to the concrete rib 32 and the bottom plate 1. Preferably, the upper chord 311 and the lower chord 313 of the structural truss segment 31 are steel bars, which can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.; the web member 312 is a triangular web member, which is wavy as a whole. Similarly, the web member 312 is a steel bar, which can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.

[0075] Further, please combine Figure 2 , Figure 4 and Figure 6 The trough of the web member 312 is cast and buried in the bottom plate 1, and the crest is cast and buried in the concrete rib 32. Preferably, when the bottom plate longitudinal steel bars 11 and the bottom plate transverse steel bars 12 are arranged, part of the bottom plate transverse steel bars 12 pass through the trough of the web member 312. More preferably, the bottom trough position of the web member 312 is bent outward to form a support leg 3120, which is convenient for supporting the structural truss section 31.

[0076] When used as a two-way board, please combine Figure 1 and Figure 2, the transverse frame 5 at least includes a frame upper chord 51 and a frame web 52. In the transverse frame 5 spanning the concrete rib segment 3, part of the frame web 52 forms a web avoidance opening 520 at the concrete rib segment 3, and the web avoidance opening 520 is located to avoid the upper chord 51, which is convenient for installation, and the web avoidance opening 520 can at least be passed by the casting side mold 4 of the concrete rib segment 3. Further, the transverse frame 5 is preferably a triangular frame. It should not be limited that the transverse frame 5 can also adopt other structural forms, such as a single-row frame, etc., and the triangular frame is the best choice here. The frame web 52 forms a discontinuous structure at the web avoidance opening 520, and the width of the web avoidance opening 520 at the discontinuous position should be slightly larger than the width of the concrete rib 32, so that the casting side mold 4 of the concrete rib segment 3 can pass through.

[0077] For better, see Figure 1 and Figure 3 The casting side form 4 uses an L-shaped steel plate, which can be stably placed on the base plate 1.

[0078] In this embodiment, a pipe-through space 20 for laying out pipelines is formed by a steel segment 2. The steel segment 2 includes a top body 21 and two side supports; the bottoms of the two side supports are buried in the bottom plate 1, the tops are supported on the top body 21, and the pipe-through space 20 is formed between the two side supports.

[0079] The structure of the steel segment 2 is specifically provided in three implementation modes in this embodiment:

[0080] 1. Please refer to Figure 6 The side support is a vertical plate support 22A, and the bottom of the vertical plate support 22A has a space for the lower chord 313 to pass through. The side of the vertical plate support 22A is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the vertical plate support 22A is a steel plate.

[0081] 2. Please refer to Figure 7 The side support is an inclined plate support 22B, and the bottom of the inclined plate support 22B has a space for the lower chord 313 to pass through. The side of the inclined plate support 22B is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the inclined plate support 22B is a steel plate.

[0082] 3. Please refer to Figure 8 and Fig. 9Each side support includes two side plates 22C, one end of the two side plates 22C converges and the other end expands outward to present an angle plate structure, and the convergence points of the two side supports are arranged facing each other; the bottom of the side plate 22C has a space for the lower chord 313 to pass through. At this time, although the two side plates 22C do not form a flat end, the whole can still be used as a casting end mold for the concrete rib 32, and the triangular structure design is more stable and can better prevent the steel segment 2 from deforming. Preferably, the side plate 22C is also made of steel plate.

[0083] It should be noted that the above three different structural forms are provided, but should not be limited thereto. When the above three structures are adopted, the lower chords 313 of the two structural truss sections 31 pass through the side supports of the steel group section 2 and are directly connected. As another preferred embodiment, please compare Figure 6 and Fig.10 ,exist Fig.10 The lower chord 313 of the middle two-section structural truss section 31 can also be connected to the side support of the steel group section 2, and then the two side supports transmit force through the force transmission connector 23. Preferably, the force transmission connector 23 is a steel bar or a steel strip plate.

[0084] The steel segment 2 serves as the core component of this embodiment, and the top body 21 is the top plate, the elevation of which is higher than the concrete rib segment 3. The side supports can also be fixed with bolts, and the two ends of the steel segment 2 are connected to the concrete rib segment 3 through the bolts. Furthermore, the top plate plays a compressive or tensile role, and the side support is implemented as an end mold of the concrete rib segment 3. It should be noted that in this embodiment, the above three types of steel segments 2 are used as preferred implementations, and the side supports and the top plate can be implemented as a whole plate or as a plurality of parallel strips. The role of the steel segment 2 is to provide compression and tensile resistance at the top and the end mold of the side, and to connect the concrete rib segment 3.

[0085] Furthermore, the top elevation of the steel segment 2 can be the same as the concrete rib segment 3, or slightly higher than the concrete rib segment 3, so as to increase the pipe insertion space 20. When the top elevation of the steel segment 2 is slightly higher than the concrete rib segment 3, the transverse frame 5 is arranged across the concrete rib segment 3, that is, located on both sides of the steel segment 2.

[0086] Beneficial effects of this technical solution:

[0087] The present application sets up truss ribs of concrete rib segments 3 and steel segments 2, and forms a larger pipe-through space 20 through the steel segment 2, and improves the ability to resist compression or tension, thereby maintaining the consistency of the bearing capacity of the composite plate ribs, so that the composite plate will not have a reduced bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe-through space 20 and maintaining the composite plate structure without weak bending links; more importantly, the lower chord 313 of the structural truss segment 31 in the concrete rib segment 3 passes through the steel segment 2 to form an integral whole, so that the structural rigidity of the truss rib is better, and the steel segment 2 will not be damaged during installation and transportation.

[0088] The transverse frame 5 and the truss ribs may be arranged to form a bidirectional plate, and the bottom of the web member 312 of the transverse frame 5 is hooked on the structural rib of the bottom plate 1 , thereby realizing the operable installation of the transverse frame 5 .

[0089] The shear force of the composite slab is large at both ends and small in the middle; the steel segment 2 is arranged on the bottom plate 1 in an area where the shear force is smaller than that at the ends (i.e., symmetrical along the midline as described in this article and within the range of no more than 2 / 3 of the total plate length), that is, close to the middle, which just matches the characteristics of the steel segment 2 having good longitudinal force transmission capacity along the floor slab but poor vertical shear resistance.

[0090] The transverse frame 5 can span the steel segment 2 and the concrete rib segment 3; when spanning the concrete rib segment 3, the web member 312 of the transverse frame 5 is partially buried in the concrete rib segment 3 to form a tie; at the same time, the web member 312 forms a web member avoidance opening 520 to facilitate the support of the side formwork 4 for pouring the concrete rib segment 3. When spanning the steel segment 2, the web member 312 is just located in the inverted U-shaped groove of the steel rib.

[0091] The steel segment 2 is fixed to two adjacent concrete rib segments 3 by bolts. When the concrete rib segments 3 are poured, the steel segment 2 can serve as an end form of the concrete rib segments 3 .

[0092] The top of the steel segment 2 can resist compression or tension, and the two sides serve as the end molds of the concrete rib segment 3. The internal space naturally forms a pipe-through space 20, and the space is sufficient for the arrangement of conventional pipelines, and it is convenient for pipelines to pass through at a certain angle, unlike the traditional concrete rib 32, which can only be in a straight line perpendicular to the rib direction with a circular hole; it is more convenient for wiring. For example, for a conventional 130mm floor slab, the bottom plate 1 is 35mm thick, the rib top space is 25mm, and the steel plate is 10mm thick, then the pipe-through space 20 can reach 60mm. However, due to the need to maintain the continuity of the force transmission of the concrete rib 32, the pipe-through space 20 of the conventional concrete rib 32 composite slab is limited to a maximum height of 30mm. The actual pipe-through difficulty on site is very high, resulting in the inability to promote the use of conventional (truss-free) concrete rib 32 slabs.

[0093] Compared with the traditional concrete rib 32 composite board, the steel frame of the present application connects the bottom plate 1 and the secondary poured concrete rib 32, preventing the concrete rib 32 from peeling off from the bottom plate 1; at the same time, the setting of the transverse frame 5 makes the composite board have a strong transverse bending resistance, and can produce a composite board with a width of more than 4m, avoiding the occurrence of floor joints in the room. The width of conventional composite boards generally does not exceed 3m, which cannot reach the width of the room span, resulting in floor joints in the room.

[0094] Embodiment 2:

[0095] First, this embodiment introduces the drawings one by one:

[0096] Figure 1 The structural schematic diagram of the prefabricated part of the composite slab is shown; the cast-in-place layer is eliminated for easier display, and some concrete ribs of the concrete rib segments are eliminated for easier display of the structural truss segments within the concrete ribs.

[0097] Figure 2 Shown Figure 1 The partial enlarged view is intended to show the positional relationship between the steel segment, concrete rib segment and transverse frame.

[0098] Figure 3 Another structural diagram of the prefabricated part is shown.

[0099] Figure 4 The concrete of the bottom slab is omitted, showing the arrangement of the transverse and longitudinal reinforcement of the bottom slab.

[0100] Figure 5 Shown Figure 4 The partially enlarged view is intended to show the positional relationship between the steel segment and the structural truss segment.

[0101] Figure 6 The side supports of the steel segments are shown as vertical plate supports.

[0102] Figure 7 The side supports of the steel segment are shown as inclined plate supports.

[0103] Figure 8 The side panels of the steel segment are shown to be triangular structures.

[0104] Fig. 9 Shown Figure 8 Schematic diagram of the structure of the Sinosteel group.

[0105] Fig.10 by Figure 6 Based on this, another structural form of the lower chord and steel segment is shown.

[0106] See also Figure 6~Figure 9 , and combined with Figure 1~Figure 5The present embodiment provides a truss rib for a composite plate, comprising at least a combined truss and a concrete rib 32; wherein the combined truss comprises at least two structural truss segments 31 and a steel segment 2, the steel segment 2 being connected between the two structural truss segments 31 to form a through-length structure, the steel segment 2 forming a pipe-through space 20 for laying out pipelines, the structural truss segment 31 comprising an upper chord 311, a web member 312 and a lower chord 313, at least the lower chord 313 of the two structural truss segments 31 being connected via the steel segment 2; the concrete rib is formed on the structural truss segment 31 to form a concrete rib segment 3.

[0107] The upper chord 311 and the lower chord 313 of the structural truss segment 31 are steel bars, and of course they can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.; the web member 312 is a triangular web member, and the whole is wavy. Similarly, the web member 312 is steel bars, and of course they can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.

[0108] Further, please combine Figure 2 , Figure 4 and Figure 6 When the truss rib of this embodiment is used for a composite plate, the trough of the web member 312 is cast and buried in the bottom plate 1 of the composite plate, and the crest is cast and buried in the concrete rib 32. Preferably, when the bottom plate longitudinal steel bars 11 and the bottom plate transverse steel bars 12 are arranged, part of the bottom plate transverse steel bars 12 pass through the trough of the web member 312. More preferably, the bottom trough position of the web member 312 is bent outward to form a support leg 3120, which is convenient for supporting the structural truss section 31.

[0109] In this embodiment, a pipe-through space 20 for laying out pipelines is formed by a steel segment 2. The steel segment 2 includes a top body 21 and two side supports; the bottoms of the two side supports are buried in the bottom plate 1, the tops are supported on the top body 21, and the pipe-through space 20 is formed between the two side supports.

[0110] The structure of the steel segment 2 is specifically provided in three implementation modes in this embodiment:

[0111] 1. Please refer to Figure 6 The side support is a vertical plate support 22A, and the bottom of the vertical plate support 22A has a space for the lower chord 313 to pass through. The side of the vertical plate support 22A is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the vertical plate support 22A is a steel plate.

[0112] 2. Please refer to Figure 7 The side support is an inclined plate support 22B, and the bottom of the inclined plate support 22B has a space for the lower chord 313 to pass through. The side of the inclined plate support 22B is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the inclined plate support 22B is a steel plate.

[0113] 3. Please refer to Figure 8 and Fig. 9 Each side support includes two side plates 22C, one end of the two side plates 22C converges and the other end expands outward to present an angle plate structure, and the convergence points of the two side supports are arranged facing each other; the bottom of the side plate 22C has a space for the lower chord 313 to pass through. At this time, although the two side plates 22C do not form a flat end, the whole can still be used as a casting end mold for the concrete rib 32, and the triangular structure design is more stable and can better prevent the steel segment 2 from deforming. Preferably, the side plate 22C is also made of steel plate.

[0114] It should be noted that three different structural forms are provided above, but should not be limited thereto.

[0115] When the above three structures are adopted, the lower chords 313 of the two structural truss sections 31 pass through the side supports of the steel group section 2 and are directly connected. As another preferred embodiment, please compare Figure 6 and Fig.10 ,exist Fig.10 The lower chord 313 of the middle two-section structural truss section 31 can also be connected to the side support of the steel group section 2, and then the two side supports transmit force through the force transmission connector 23. Preferably, the force transmission connector 23 is a steel bar or a steel strip plate.

[0116] Combination Figure 1 , Figure 2 or Figure 4 , Figure 5 It can be known that the steel segment 2 is the core component of this embodiment, and the top body 21 is the top plate, and the elevation of the top plate is higher than the concrete rib segment 3. The side supports can also be fixed with bolts (not shown in the figure), and the two ends of the steel segment 2 are connected to the concrete rib segment 3 through the bolts. Furthermore, the top plate plays a compressive or tensile role, and the side support is implemented as an end mold of the concrete rib segment 3. It should be noted that in this embodiment, the above three steel segments 2 are used as preferred implementations, and the side supports and the top plate can be implemented as a whole plate or as a plurality of parallel strips. The role of the steel segment 2 is to provide compression and tensile resistance at the top and the end mold of the side, and to connect the concrete rib segment 3.

[0117] Furthermore, the top elevation of the steel segment 2 may be the same as that of the concrete rib segment 3 , or slightly higher than the concrete rib segment 3 , thereby increasing the pipe penetration space 20 .

[0118] Beneficial effects of this technical solution:

[0119] The truss rib formed by combining the concrete rib segment 3 and the steel segment 2 in the present application, when used for the composite plate, forms a larger pipe passing space 20 through the steel segment 2, and improves the ability to resist compression or tension, thereby maintaining the consistency of the bearing capacity of the composite plate rib, so that the composite plate will not reduce its bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe passing space 20 and maintaining the composite plate structure without weak bending links; more importantly, the lower chord 313 of the structural truss segment 31 in the concrete rib segment 3 passes through the steel segment 2 to form an integral whole, so that the structural rigidity of the truss rib is better, and the steel segment 2 will not be damaged during installation and transportation.

[0120] Embodiment 3:

[0121] First, this embodiment introduces the drawings one by one:

[0122] Figure 1 The structural schematic diagram of the prefabricated part of the composite slab is shown; the cast-in-place layer is eliminated for easier display, and some concrete ribs of the concrete rib segments are eliminated for easier display of the structural truss segments within the concrete ribs.

[0123] Figure 2 Shown Figure 1 The partial enlarged view is intended to show the positional relationship between the steel segment, concrete rib segment and transverse frame.

[0124] Figure 3 Another structural diagram of the prefabricated part is shown.

[0125] Figure 4 The concrete of the bottom slab is omitted, showing the arrangement of the transverse and longitudinal reinforcement of the bottom slab.

[0126] Figure 5 Shown Figure 4 The partially enlarged view is intended to show the positional relationship between the steel segment and the structural truss segment.

[0127] Figure 6 The side supports of the steel segments are shown as vertical plate supports.

[0128] Figure 7 The side supports of the steel segment are shown as inclined plate supports.

[0129] Figure 8 The side panels of the steel segment are shown to be triangular structures.

[0130] Fig. 9 Shown Figure 8 Schematic diagram of the structure of the Sinosteel group.

[0131] Fig.10 by Figure 6 Based on this, another structural form of the lower chord and steel segment is shown.

[0132] The present embodiment provides a composite truss for a composite plate, the composite truss includes at least two structural truss segments 321 and a steel segment 2, the steel segment 2 is connected between the two structural truss segments 31 to form a through-length structure, the steel segment 2 is formed with a pipe-through space 20 for laying out pipelines, the structural truss segment 31 includes an upper chord 311, a web member 312 and a lower chord 313, and the lower chord 313 of at least two structural truss segments 31 is connected through the steel segment 2; the concrete rib 32 is formed on the structural truss segment 31 to form a concrete rib segment 3.

[0133] The upper chord 311 and the lower chord 313 of the structural truss segment 31 are steel bars, and of course they can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.; the web member 312 is a triangular web member, and the whole is wavy. Similarly, the web member 312 is steel bars, and of course they can also be implemented as steel pipes, high-strength composite material pipes, alloy pipes, etc.

[0134] Further, please combine Figure 2 , Figure 4 and Figure 6 When the truss rib of this embodiment is used for a composite plate, the trough of the web member 312 is cast and buried in the bottom plate 1 of the composite plate, and the crest is cast and buried in the concrete rib 32. Preferably, when the bottom plate longitudinal steel bars 11 and the bottom plate transverse steel bars 12 are arranged, part of the bottom plate transverse steel bars 12 pass through the trough of the web member 312. More preferably, the bottom trough position of the web member 312 is bent outward to form a support leg 3120, which is convenient for supporting the structural truss section 31.

[0135] In this embodiment, a pipe-through space 20 for laying out pipelines is formed by a steel segment 2. The steel segment 2 includes a top body 21 and two side supports; the bottoms of the two side supports are buried in the bottom plate 1, the tops are supported on the top body 21, and the pipe-through space 20 is formed between the two side supports.

[0136] The structure of the steel segment 2 is specifically provided in three implementation modes in this embodiment:

[0137] 1. Please refer to Figure 6 The side support is a vertical plate support 22A, and the bottom of the vertical plate support 22A has a space for the lower chord 313 to pass through. The side of the vertical plate support 22A is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the vertical plate support 22A is a steel plate.

[0138] 2. Please refer to Figure 7 The side support is an inclined plate support 22B, and the bottom of the inclined plate support 22B has a space for the lower chord 313 to pass through. The side of the inclined plate support 22B is a casting end mold of the concrete rib 32, which can be welded and fixed to the upper chord 311 of the structural truss section 31. Preferably, the inclined plate support 22B is a steel plate.

[0139] 3. Please refer to Figure 8 and Fig. 9 Each side support includes two side plates 22C, one end of the two side plates 22C converges and the other end expands outward to present an angle plate structure, and the convergence points of the two side supports are arranged facing each other; the bottom of the side plate 22C has a space for the lower chord 313 to pass through. At this time, although the two side plates 22C do not form a flat end, the whole can still be used as a casting end mold for the concrete rib 32, and the triangular structure design is more stable and can better prevent the steel segment 2 from deforming. Preferably, the side plate 22C is also made of steel plate.

[0140] It should be noted that three different structural forms are provided above, but should not be limited thereto.

[0141] When the above three structures are adopted, the lower chords 313 of the two structural truss sections 31 pass through the side supports of the steel group section 2 and are directly connected. As another preferred embodiment, please compare Figure 6 and Fig.10 ,exist Fig.10 The lower chord 313 of the middle two-section structural truss section 31 can also be connected to the side support of the steel group section 2, and then the two side supports transmit force through the force transmission connector 23 ( Fig.10 Preferably, the force transmission connector 23 is a steel bar or a steel strip plate.

[0142] The steel segment 2 serves as the core component of this embodiment, and the top body 21 is the top plate, the elevation of which is higher than the concrete rib segment 3. The side supports can also be fixed with bolts, and the two ends of the steel segment 2 are connected to the concrete rib segment 3 through the bolts. Furthermore, the top plate plays a compressive or tensile role, and the side support is implemented as an end mold of the concrete rib segment 3. It should be noted that in this embodiment, the above three types of steel segments 2 are used as preferred implementations, and the side supports and the top plate can be implemented as a whole plate or as a plurality of parallel strips. The role of the steel segment 2 is to provide compression and tensile resistance at the top and the end mold of the side, and to connect the concrete rib segment 3.

[0143] Furthermore, the top elevation of the steel segment 2 may be the same as that of the concrete rib segment 3 , or slightly higher than the concrete rib segment 3 , thereby increasing the pipe penetration space 20 .

[0144] This embodiment can also add a transverse frame 5, so as to be applied to the composite plate to form a two-way plate. Specifically, this embodiment provides a specific diagram of the two-way plate structure. Figure 1 , Figure 2 Figure 3 and Figure 4This embodiment further includes a transverse frame 5, the bottom of which is buried in the bottom plate 1, and the top of which is straddling the steel segment 2 and / or the concrete rib segment 3. Here, "and / or" is interpreted as the top of the transverse frame 5 straddling the steel segment 2; or the top of the transverse frame 5 straddling the concrete rib segment 3; or when there are multiple transverse frames 5, the top of one of the transverse frames 5 straddling the steel segment 2, and the top of one of the transverse frames 5 straddling the concrete rib segment 3.

[0145] When used as a two-way board, please combine Figure 1 and Figure 2 , the transverse frame 5 at least includes a frame upper chord 51 and a frame web 52. In the transverse frame 5 spanning the concrete rib segment 3, part of the frame web 52 forms a web avoidance opening 520 at the concrete rib segment 3, and the web avoidance opening 520 is located to avoid the upper chord 51, which is convenient for installation, and the web avoidance opening 520 can at least be passed by the casting side mold 4 of the concrete rib segment 3. Further, the transverse frame 5 is preferably a triangular frame. It should not be limited that the transverse frame 5 can also adopt other structural forms, such as a single-row frame, etc., and the triangular frame is the best choice here. The frame web 52 forms a discontinuous structure at the web avoidance opening 520, and the width of the web avoidance opening 520 at the discontinuous position should be slightly larger than the width of the concrete rib 32, so that the casting side mold 4 of the concrete rib segment 3 can pass through.

[0146] When the top elevation of the steel segment 2 is slightly higher than the concrete rib segment 3 , the transverse frame 5 is arranged across the concrete rib segment 3 , that is, located on both sides of the steel segment 2 .

[0147] The technical effects of the above technical solution of the utility model are as follows:

[0148] When the present application is used for a composite plate, a larger pipe-passing space is formed by the steel segments, and the compression or tension resistance is improved, thereby maintaining the consistency of the bearing capacity of the composite plate ribs, so that the composite plate will not have a reduced bending resistance at the pipeline crossing point, thereby achieving the characteristics of providing sufficient pipe-passing space and maintaining the composite plate structure without weak bending links; more importantly, the lower chord of the structural truss is connected as a whole by the steel segments, so that the structural rigidity of the truss ribs is better, and the steel segments will not be damaged during installation and transportation.

[0149] Furthermore, the utility model is described in detail above in conjunction with the embodiments of the drawings, and a person skilled in the art can make various variations of the utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A composite plate, characterized in that: include: Base plate; Truss ribs, the truss ribs are arranged on the bottom plate and formed on the plate surface of the bottom plate, the truss ribs include composite trusses and concrete ribs; the composite truss includes at least two structural truss sections and a steel group section, the steel group section is connected between the two structural truss sections to form a through-length structure, the steel group section is formed with a pipe-through space for pipelines to be laid out, and the concrete ribs are formed on the structural truss section to form a concrete rib section; the structural truss section includes an upper chord, a web member and a lower chord, and the lower chords of at least two of the structural truss sections are connected through the steel group section; A cast-in-place layer is cast on the base plate and at least covers the truss ribs.

2. The composite panel according to claim 1, characterized in that: It also includes a transverse frame, the bottom of which is buried in the bottom plate, and the top of which spans the steel segment and / or the concrete rib segment.

3. The composite panel according to claim 2, characterized in that: The transverse frame at least includes a frame upper chord and a frame web member, and part of the frame web members in the transverse frame spanning the concrete rib segment form a web member avoidance opening, and the web member avoidance opening is located to avoid the upper chord.

4. The composite panel according to claim 1, wherein: The steel group segment includes a top body and two side supports; the bottoms of the two side supports are buried in the bottom plate, the tops are supported on the top body, and the pipe-through space is formed between the two side supports.

5. The composite board according to claim 4, characterized in that: The side supports are vertical plate supports, and the bottoms of the vertical plate supports have spaces for the lower chord to pass through.

6. The composite board according to claim 4, characterized in that: The side support is an inclined plate support, and a bottom of the inclined plate support has a space for the lower chord to pass through.

7. The composite board according to claim 4, characterized in that: The side support comprises two side panels, one end of the two side panels converges and the other end expands outward to present an angle plate structure, and the convergence points of the two side supports are arranged facing each other; the bottom of the side panel has a space for the lower chord to pass through.

8. The composite board according to any one of claims 5 to 7, characterized in that: The top body is a top plate, and the elevation of the top plate is higher than that of the concrete rib segment.

9. The composite board according to any one of claims 5 to 7, characterized in that: The upper chord of the structural truss segment in the concrete rib segment is secured to the side supports.

10. A truss rib for a composite plate, characterized in that: At least: A combined truss, the combined truss comprising at least two structural truss sections and a steel group section, the steel group section being connected between the two structural truss sections to form a through-length structure, the steel group section forming a pipe-through space for laying out pipelines, the structural truss section comprising an upper chord, a web member and a lower chord, the lower chord of at least two of the structural truss sections being connected through the steel group section; Concrete ribs; the concrete ribs are formed on the structural truss sections to form concrete rib sections.

11. A composite truss for a composite plate, characterized in that: It comprises at least two structural truss sections and a steel group section, wherein the steel group section is connected between the two structural truss sections to form a through-length structure, and the steel group section is provided with a pipe-passing space for laying out pipelines, and the structural truss section comprises an upper chord, a web member and a lower chord, and the lower chords of at least two of the structural truss sections are connected via the steel group section.

12. The composite truss for composite panels according to claim 11, characterized in that: The lower chords in at least two of the structural truss segments are connected through the steel group segment.

13. The composite truss for composite panels according to claim 11, characterized in that: The lower chords in at least two of the structural truss segments are connected to two sides of the steel segment, and the steel segment has force transmission connectors for transmitting force to the lower chords on both sides.

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