Prefabricated panels and their support systems

Abstract

The present application discloses a precast panel and its support system. The precast panel includes: a prestressed concrete panel; a plurality of concrete blocks arranged on the prestressed concrete panel at intervals along the length of the prestressed concrete panel; a first truss arranged between two adjacent concrete blocks, the first truss including a first upper chord and a first web chord, the two ends of the first upper chord being respectively embedded in the two adjacent concrete blocks and spaced apart from the prestressed concrete panel in a direction perpendicular to the panel plane of the prestressed concrete panel, the first web chord being connected to the first upper chord and partially embedded in the prestressed concrete panel. Through the above-mentioned method, the rigidity and strength of the precast panel provided by the present application can be significantly improved.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated buildings, and in particular to a prefabricated panel and a support system thereof. Background Art

[0002] Existing composite floor slabs are created by pouring concrete onto precast panels. When the span of a precast panel is large, temporary supports are often required between the center of the panel and the ground or other supporting surface to prevent excessive deformation or cracking during pouring. Due to inherent performance limitations, existing precast panels are limited in their adaptability to large-span applications. Furthermore, existing precast panels are too thick for small spans, resulting in heavy weight and high production costs, making them uneconomical. Summary of the Invention

[0003] This application mainly provides a prefabricated panel and its support system to solve the problem that the existing prefabricated panels are insufficient in strength and rigidity and cannot be applied to large-span scenarios, and the panels are too thick and costly in small-span scenarios.

[0004] To solve the above-mentioned technical problems, the present application adopts a technical solution: providing a precast panel. The precast panel comprises: a prestressed concrete panel; a plurality of concrete blocks spaced apart along the length of the prestressed concrete panel; and a first truss disposed between two adjacent concrete blocks. The first truss comprises a first upper chord and a first web chord. The first upper chord has two ends embedded in the two adjacent concrete blocks and is spaced apart from the prestressed concrete panel in a direction perpendicular to the panel plane. The first web chord is connected to the first upper chord and partially embedded in the prestressed concrete panel.

[0005] In some embodiments, in each of the first trusses, the number of the first upper chord is one, the number of the first web chords is two, and in a cross section along the length direction of the prestressed concrete slab, the two first web chords are arranged in a V shape. The first web chords are arranged in a wave shape along the length direction of the prestressed concrete slab, wherein the crest of the first web chord is connected to the first upper chord, and the trough of the first web chord is embedded in the prestressed concrete slab.

[0006] In some embodiments, the first truss is composed of the first top chord and a first web chord.

[0007] In some embodiments, the precast panel further includes at least one second truss, which is spaced apart from the plurality of concrete blocks along the width direction of the prestressed concrete panel and partially embedded in the prestressed concrete panel.

[0008] In some embodiments, the second truss includes a second upper chord, a second web chord and a lower chord, the second upper chord and the lower chord are spaced apart along the vertical direction, the second web chord is connected between the second upper chord and the lower chord, the lower chord is embedded in the prestressed concrete slab, and the second upper chord is spaced apart from the prestressed concrete slab along the vertical direction.

[0009] In some embodiments, in each of the second trusses, the number of the second upper chord is one, the number of the second web chords and the number of the lower chords are two respectively, the two lower chords are arranged at intervals along the width direction of the prestressed concrete slab, and in a cross section along the length direction of the prestressed concrete slab, the two second web chords are arranged in a V shape, and the second web chords are arranged in a wavy shape along the length direction of the prestressed concrete slab, wherein the crest of the second web chord is connected to the second upper chord, and the trough of the second web chord is connected to the corresponding lower chord and embedded in the prestressed concrete slab.

[0010] In some embodiments, a total span of the first trusses between the plurality of concrete blocks along the length direction of the prestressed concrete slab is smaller than a total span of the second trusses along the length direction of the prestressed concrete slab.

[0011] In some embodiments, the number of the second trusses is at least two, which are spaced apart along the width direction of the prestressed concrete slab, and the plurality of concrete blocks and the first trusses are located in the spaced area between the second trusses.

[0012] In some embodiments, the precast panel further includes two first embedded parts and at least one second embedded part, wherein the first embedded parts and the second embedded parts are arranged on the corresponding concrete blocks, wherein the second embedded part is located between the two first embedded parts, and an axial hole for detachable connection is formed on the first embedded part;

[0013] The axes of the two axial holes are close to each other on a side of the prestressed concrete slab facing away from the concrete block.

[0014] In some embodiments, the concrete blocks corresponding to the two first embedded parts have a first support wall and a second support wall on opposite sides of each other, which are inclined relative to the prestressed concrete slab. The first support wall and the second support wall intersect on the side of the prestressed concrete slab facing the concrete block. One of the first embedded parts is arranged on the first support wall on the corresponding concrete block, and the other first embedded part is arranged on the second support wall on the corresponding concrete block.

[0015] In some embodiments, the axes of the axial holes of the two first embedded parts are respectively perpendicular to the first supporting wall or the second supporting wall on which they are provided.

[0016] In some embodiments, the first embedded part includes a support frame and an embedded pipe, the support frame is supported on the first support wall or the second support wall, the embedded pipe is fixed relative to the support frame, and is embedded in the concrete block and the prestressed concrete slab.

[0017] In some embodiments, the support frame includes a support plate and anchor bars, the support plate is supported on the first support wall or the second support wall, and the anchor bars are connected to the support plate and extend into the concrete block.

[0018] In some embodiments, the support plate is provided with the axial hole, and the embedded tube is connected to the axial hole.

[0019] In some embodiments, the first embedded part is a bolt sleeve, and the bolt sleeve is arranged on the concrete block at an angle relative to the prestressed concrete slab.

[0020] In some embodiments, a portion of the second embedded part is embedded in the concrete block, and another portion of the second embedded part is embedded in the prestressed concrete slab.

[0021] In some embodiments, the second embedded part is a bolt sleeve, one end of the bolt sleeve is closed, the inner wall of the bolt sleeve is provided with a thread, and the other end of the bolt sleeve is connected to the side of the prestressed concrete slab away from the concrete block.

[0022] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a support system for a precast panel. The support system includes the above-mentioned precast panel, two sets of inclined-bracing assemblies, and a support assembly, wherein the first ends of the two sets of inclined-bracing assemblies are detachably connected to one side of the precast panel, and the support assembly is located between the two sets of inclined-bracing assemblies and connected between the second ends of the inclined-bracing rods of the two sets of inclined-bracing assemblies and the precast panel.

[0023] In some embodiments, the two groups of inclined-stayed assemblies respectively include a first connecting member and an inclined rod, the first connecting member is arranged on the prefabricated plate and is inclined to the prefabricated plate, the first end of the inclined rod is connected to the first connecting member, and the inclined rods of the two groups of inclined-stayed assemblies are close to each other, and the second end of the inclined rod is connected to one end of the support assembly.

[0024] In some embodiments, the angle between the inclined rods of the same group of inclined-stayed assemblies and the extension line of the first connecting member is in the range of 0 to 10.

[0025] In some embodiments, the support system further includes a tensioning assembly connected between the second ends of the inclined rods of the two groups of inclined rods, and the tensioning assembly is used to adjust the tension between the second ends of the two inclined rods.

[0026] In some embodiments, the support assembly includes a second connecting member and two support rods, the second connecting member is detachably connected to one side of the prefabricated panel, and the second connecting member is provided with two adapters spaced apart from each other, the first ends of the two support rods are respectively connected to the corresponding adapters, and the second ends of the two support rods are respectively connected to the second ends of the corresponding diagonal rods or the tensioning assembly.

[0027] In some embodiments, the tensioning assembly includes two horizontal tie rods and a turnbuckle, wherein the first ends of the two horizontal tie rods are detachably connected to the second ends of the corresponding diagonal tie rods, and the two ends of the turnbuckle are respectively connected to the second ends of the two horizontal tie rods;

[0028] The degree of tension between the second ends of the diagonal tie rods is adjusted by adjusting the degree of overlap between the turnbuckle bolt and the second end of the horizontal tie rod.

[0029] In some embodiments, the basket bolt includes a first spiral segment, an adjustment segment and a second spiral segment, the first spiral segment and the second spiral segment are arranged at opposite ends of the adjustment segment, the second end of the horizontal pull rod is provided with a third spiral segment, the third spiral segment is spirally connected to the first spiral segment or the second spiral segment, and the adjustment segment is used to drive the first spiral segment and the second spiral segment to rotate relative to the third spiral segment.

[0030] In some embodiments, the adjustment section is prismatic and is provided with an adjustment hole.

[0031] In some embodiments, the horizontal pull rod further includes a clamping section, a pull rod section and a connecting section. The third spiral section, the clamping section, the pull rod section and the connecting section are connected in sequence. The clamping section is used to provide a clamping position so that the horizontal pull rod can be limited in rotation, and the connecting section is used to be detachably connected to the second end of the inclined assembly.

[0032] In some embodiments, the second end of the inclined-stayed assembly is provided with a first connecting plate, the second end of the support assembly is provided with two spaced-apart second connecting plates, the connecting section includes two spaced-apart third connecting plates, the first connecting plate, the second connecting plate, and the third connecting plate are all provided with connecting holes, and the first connecting plate, the second connecting plate, and the third connecting plate are coaxially connected by fasteners passing through the connecting holes;

[0033] Wherein, the first connecting plate is arranged between the two third connecting plates, and the two third connecting plates are arranged between the two second connecting plates.

[0034] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a precast panel and its support system. By arranging a plurality of concrete blocks along the length direction of the prestressed concrete panel, and arranging a first truss between two adjacent concrete blocks, and by respectively burying the two ends of the first upper chord member in the first truss in the two adjacent concrete blocks, the tensile strength of the material of the first upper chord member is utilized to make the two adjacent concrete blocks support each other and enhance the rigidity of the precast panel. The first upper chord member is spaced apart from the prestressed concrete panel in the direction perpendicular to the prestressed concrete panel, the first web chord member is connected to the first upper chord member and partially buried in the prestressed concrete panel, and the first web chord member is connected to the first upper chord member and partially buried in the prestressed concrete panel. The components support the first upper chord component, which can prevent the first upper chord component from deforming and losing its function, and further increase the integrity between the concrete block and the prestressed concrete slab, thereby forming a stronger reinforced structure, which can significantly improve the stiffness and strength of the precast slab. Therefore, the precast slab provided by the present application can increase the span due to the improved stiffness and strength, so as to be more suitable for large-span scenarios. In small-span scenarios, the thickness of the prestressed concrete slab can be relatively thinned, thereby reducing the thickness of the precast slab, thereby saving the production cost of the precast slab and improving the economy of the precast slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0036] Figure 1 This is a structural diagram of an embodiment of a support system for prefabricated panels provided in this application;

[0037] Figure 2 yes Figure 1 A schematic diagram of a half-section structure of a precast panel in the support system shown;

[0038] Figure 3 yes Figure 2 The schematic cross-sectional structure diagram of the prefabricated panel along the viewing direction 11;

[0039] Figure 4 yes Figure 2 The schematic cross-sectional structure diagram of the prefabricated panel along the viewing direction 22;

[0040] Figure 5 yes Figure 2 An enlarged structural diagram of the E region in the precast panel is shown;

[0041] Figure 6 yes Figure 2 An enlarged structural diagram of the F area in the precast panel shown;

[0042] Figure 7 yes Figure 2 A schematic structural diagram of the first truss in the precast panel shown;

[0043] Figure 8 yes Figure 2 A schematic structural diagram of the second truss in the precast panel shown;

[0044] Figure 9 yes Figure 2 A schematic structural diagram of the support frame in the prefabricated panel shown;

[0045] Figure 10 yes Figure 1 A schematic diagram of a first enlarged structure of area A in the support system shown;

[0046] Figure 11 yes Figure 1 A second enlarged structural diagram of area A in the support system is shown;

[0047] Figure 12 yes Figure 10 A schematic structural diagram of the first connecting member in the inclined-stayed assembly shown;

[0048] Figure 13 yes Figure 10 A bottom-up structural diagram of the inclined-stayed assembly shown;

[0049] Figure 14 yes Figure 1 A schematic diagram of the enlarged structure of area B in the support system shown;

[0050] Figure 15 yes Figure 14 A schematic structural diagram of the second connecting member in the support assembly shown;

[0051] Figure 16 yes Figure 14 A side structural schematic diagram of the support assembly shown;

[0052] Figure 17 yes Figure 1 A schematic diagram of the enlarged structure of area C in the support system shown;

[0053] Figure 18 yes Figure 17 A schematic structural diagram of the horizontal pull rod in the tensioning assembly shown;

[0054] Figure 19 yes Figure 1 A schematic diagram of the enlarged structure of area D in the support system shown;

[0055] Figure 20 yes Figure 19 A schematic diagram of the structure of area D in the support system as viewed from above;

[0056] Figure 21 yes Figure 2 Another cross-sectional structural schematic diagram of the prefabricated panel shown;

[0057] Figure 22 yes Figure 21 Schematic diagram of the enlarged structure of area G in the prefabricated panel shown. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0059] The terms "first", "second" and "third" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units that are not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices.

[0060] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0061] The present application provides a support system 100 for a prefabricated panel 10. Figure 1 , Figure 1 It is a structural schematic diagram of an embodiment of a support system for prefabricated panels provided in this application.

[0062] The support system 100 includes a precast panel 10, two groups of inclined-stayed assemblies 20, a support assembly 30, and a tensioning assembly 40. The first ends of the two groups of inclined-stayed assemblies 20 and the support assembly 30 are detachably connected to one side of the precast panel 10. The two ends of the tensioning assembly 40 are respectively connected to the second ends of the two groups of inclined-stayed assemblies 20, and the second end of the support assembly 30 is also connected to the tensioning assembly 40. The tensioning assembly 40 is used to adjust the tensioning degree of the inclined-stayed assemblies 20 and the support assembly 30 to support the precast panel 10 and ensure the stability when pouring concrete on the precast panel 10 to form a cast-in-place layer.

[0063] Specifically, the prefabricated panel 10 can be used in composite floor slabs, that is, a cast-in-place layer can be formed by pouring on the prefabricated panel 10 and then combined to form a composite floor slab. The prefabricated panel 10 can be a prestressed prefabricated panel with good bending and crack resistance.

[0064] See Figures 2 to 4 ,in Figure 2 yes Figure 1 The schematic diagram of the half-section structure of the prefabricated panel in the support system is shown. Figure 3 yes Figure 2 The schematic cross-sectional structure diagram of the prefabricated panel along the viewing direction 11 is shown. Figure 4 yes Figure 2 The schematic cross-sectional structure diagram of the prefabricated panel along the viewing direction 22 is shown.

[0065] The precast panel 10 includes a prestressed concrete panel 11, a plurality of concrete blocks 12, a first truss 13, and a second truss 14. The plurality of concrete blocks 12 are arranged on the prestressed concrete panel 11 at intervals along the length direction of the prestressed concrete panel 11; the first truss 13 is arranged between two adjacent concrete blocks 12 and partially embedded in the prestressed concrete panel 11; the second truss 14 is arranged at intervals from the plurality of concrete blocks 12 along the width direction of the prestressed concrete panel 11 and partially embedded in the prestressed concrete panel 11.

[0066] The prestressed concrete slab 11 is embedded with prestressed tendons 110 along the length direction and transverse distribution tendons 112 along the width direction perpendicular to the length direction, wherein the prestressed tendons 110 can be stress-relieved steel wires, steel bars or steel pipes, etc., to enhance the crack resistance of the prefabricated slab 10 in the length direction, and the transverse distribution tendons can be stress-relieved or non-stress-relieved steel wires, steel bars or steel pipes, etc., to increase the strength and rigidity of the prefabricated slab 10 in the width direction, so that the combination of the prestressed tendons 110 and the transverse distribution tendons 112 can significantly enhance the strength performance of the prestressed concrete slab.

[0067] Specifically, a plurality of prestressed tendons 110 are embedded in the prestressed concrete slab 11 at intervals along the width direction, and the prestressed tendons 110 are arranged at equal intervals; a plurality of transverse distribution tendons 112 are embedded in the prestressed concrete slab 11 at intervals along the length direction, and the transverse distribution tendons 112 can be arranged at even intervals, or the transverse distribution tendons 112 are arranged corresponding to the two ends of the prestressed concrete slab 11 along the length direction and each concrete block 12.

[0068] like Figure 5 and Figure 6 As shown, Figure 5 yes Figure 2 The enlarged structural diagram of the E area in the precast panel is shown. Figure 6 yes Figure 2 The diagram shows an enlarged structural diagram of area F in the precast panel. Precast panel 10 also includes concrete reinforcement 114, which is embedded within concrete blocks 12 and prestressed concrete slab 11. Specifically, a portion of concrete reinforcement 114 is embedded within concrete blocks 12, while a portion of concrete reinforcement 114 is embedded within prestressed concrete slab 11, further strengthening the connection between concrete blocks 12 and prestressed concrete slab 11.

[0069] The prestressed concrete slab 11 and each concrete block 12 are integrally formed by cast-in-situ concrete, which can enhance the strength and punching resistance of the entire prestressed concrete slab 11 .

[0070] See again Figure 2 , multiple concrete blocks 12 are arranged on the prestressed concrete slab 11 at intervals along the length direction of the prestressed concrete slab 11. The multiple concrete blocks 12 can be arranged in a row along the length direction of the prestressed concrete slab 11, or the multiple concrete blocks 12 are distributed in an array along the length direction of the prestressed concrete slab 11. The number of concrete blocks 12 can be three, four or five, etc., and this application does not make any specific restrictions on this.

[0071] The concrete block 12 can also increase the stiffness of the corresponding area on the prestressed concrete slab 11 to improve the mechanical properties of the middle area of ​​the prestressed concrete slab 11 , thereby increasing the overall stiffness of the prestressed concrete slab 11 .

[0072] Through the design of the above-mentioned prestressed concrete slab 11, the thickness of the prestressed concrete slab 11 can be relatively reduced. The thickness of the concrete slab corresponding to the composite slab existing on the market is more than 60 mm. The thickness of the prestressed concrete slab 11 in this application can be less than or equal to 45 mm, thereby significantly reducing the thickness and self-weight of the prefabricated slab 10, and also significantly increasing the stiffness and strength performance of the prefabricated slab 10.

[0073] Specifically, the thickness of the prestressed concrete slab 11 is greater than or equal to 30 mm and less than or equal to 45 mm. The thickness can be 30 mm, 35 mm or 45 mm, and the present application does not limit the specific thickness.

[0074] like Figure 2 and Figure 3 As shown, the first truss 13 is disposed between two adjacent concrete blocks 12, so that the two adjacent concrete blocks 12 support each other through the first truss 13, thereby significantly enhancing the overall rigidity and strength of the precast panel 10. The first truss 13 includes a first upper chord 130 and a first web chord 132. The two ends of the first upper chord 130 are respectively embedded in the two adjacent concrete blocks 12, so as to utilize the tensile properties of the material of the first upper chord 130 itself to enable the two adjacent concrete blocks 12 to support each other and enhance the rigidity of the precast panel 10. In addition, the first upper chord 130 is spaced apart from the prestressed concrete panel 11 in a direction perpendicular to the panel plane of the prestressed concrete panel 11, and the first web chord 132 is connected to the first upper chord 130 and partially embedded in the prestressed concrete panel 11. In other words, the first web chord 132 is connected to the first upper chord 130 at the same time. The first upper chord 130 and the prestressed concrete slab 11 support the first upper chord 130, thereby preventing the first upper chord 130 from deforming and losing its function, and further increasing the integrity between the concrete block 12 and the prestressed concrete slab 11, thereby forming a stronger reinforced structure, which can significantly improve the rigidity and strength of the precast panel 10, making the precast panel 10 more suitable for large-span scenarios. In small-span scenarios, the thickness of the prestressed concrete slab 11 can be relatively thinned, thereby reducing the thickness of the precast panel 10, thereby saving the production cost of the precast panel 10 and improving the economic efficiency of the precast panel 10.

[0075] In a small span scenario, the tensioning assembly 40 can also be used to adjust the tensioning degree of the diagonal assembly 20 and the support assembly 30 to make the prefabricated panel 10 arch upward, thereby adjusting the joints of two adjacent prefabricated panels 10 to be flush.

[0076] The first truss 13 may also be partially embedded in the cast-in-place layer on the prestressed concrete slab 11 to increase the connection strength between the prestressed concrete slab 11 and the cast-in-place layer, thereby improving the strength and rigidity of the formed composite floor slab.

[0077] In this embodiment, three concrete blocks 12 are disposed along the length of the central portion of the prestressed concrete slab 11, and two first trusses 13 are disposed sequentially between two adjacent concrete blocks 12. The first upper chord 130 and the first web chord 132 are steel bars. The cross-sectional diameter of the steel bars in the first upper chord 130 is larger than that in the first web chord 132, so that the first upper chord 130 provides better support.

[0078] Optionally, the first upper chord 130 and the first web chord 132 may also be steel pipes or steel sections, etc., which is not specifically limited in the present application.

[0079] Specifically, refer to Figure 3 、 Figure 5 and Figure 7 ,in Figure 7 yes Figure 2 The figure shows a schematic diagram of the structure of the first truss in a precast slab. Each first truss 13 has one first upper chord 130 and two first web chords 132. In a cross-section along the length of the prestressed concrete slab 11, the two first web chords 132 are arranged in a V-shape, supporting the first upper chord 130 from both sides and improving support reliability. The first web chords 132 are arranged in a wavy pattern along the length of the prestressed concrete slab 11, with the crests of the first web chords 132 connected to the first upper chord 130 and the troughs of the first web chords 132 embedded in the prestressed concrete slab 11. By configuring the first web chord 132 to be wavy, the first web chord 132 can continuously form multiple connection points between the first upper chord 130 and the prestressed concrete slab 11 and can be evenly supported between the first upper chord 130 and the prestressed concrete slab 11, thereby improving the connection strength between the first truss 13 and the prestressed concrete slab 11 and effectively improving the overall strength and rigidity of the precast slab 10.

[0080] Optionally, the first truss 13 may further include other numbers of first upper chords 130 and first web chords 132. For example, the number of first upper chords 130 is one, the number of first web chords 132 is one, and the first web chord 132 is connected between the first upper chord 130 and the prestressed concrete slab 11.

[0081] In this embodiment, the first truss 13 is composed of a first upper chord 130 and a first web chord 132, and the first truss 13 does not need to include any other additional structural members, which can significantly improve the overall strength and rigidity of the prefabricated panel 10, and can enhance the overall strength and rigidity of the prefabricated panel 10 in a relatively material-saving, cost-saving and light-weight manner.

[0082] In other embodiments, the first truss 13 may include additional structural members to further increase the rigidity and strength of the first truss 13 and enhance the reinforcement effect on the concrete blocks 12 and the prestressed concrete slabs 11 .

[0083] In this embodiment, refer to Figure 2 、 Figure 4 and Figure 8 ,in Figure 8 yes Figure 2Schematic diagram of the structure of the second truss in the precast panel shown. The precast panel 10 also includes at least one second truss 14, which is spaced apart from the multiple concrete blocks 12 along the width direction of the prestressed concrete panel 11 and partially embedded in the prestressed concrete panel 11. The provision of the second truss 14 further strengthens the area of ​​the prestressed concrete panel 11 away from the concrete blocks 12, so that the strength and stiffness of various parts of the precast panel 10 are maintained at a good consistency. The portion of the second truss 14 exposed outside the prestressed concrete panel 11 can also be further embedded in the cast-in-place layer on the prestressed concrete panel 11 to increase the connection strength between the prestressed concrete panel 11 and the cast-in-place layer, thereby improving the strength and stiffness of the resulting composite floor slab.

[0084] Optionally, the width of the prestressed concrete slab 11 along the width direction is relatively small, and the precast slab 10 may include a second truss 14 , which is spaced apart from the plurality of concrete blocks 12 arranged along the length direction.

[0085] The number of the second trusses 14 is at least two, which are spaced apart along the width direction of the prestressed concrete slab 11 . The plurality of concrete blocks 12 and the first trusses 13 are located in the spaced areas between the second trusses 12 .

[0086] In this embodiment, the precast panel 10 further includes two second trusses 14 , which are symmetrically arranged on both sides of the plurality of concrete blocks 12 and close to both side edges of the prestressed concrete panel 11 to enhance the strength and rigidity of the side areas of the prestressed concrete panel 11 .

[0087] like Figure 4 and Figure 8 As shown, the second truss 14 includes a second upper chord 140, a second web chord 142, and a bottom chord 144. The second upper chord 140 and the bottom chord 144 are spaced apart in a direction perpendicular to the plane of the prestressed concrete slab 11. The second web chord 142 is connected between the second upper chord 140 and the bottom chord 144. The bottom chord 144 is embedded in the prestressed concrete slab 11 to further enhance the connection strength between the second truss 14 and the prestressed concrete slab 11. The second upper chord 140 is spaced apart from the prestressed concrete slab 11 in a direction perpendicular to the plane of the prestressed concrete slab 11, thereby utilizing the structure of the second truss 14 to enhance the rigidity and strength of the precast slab 10.

[0088] In this embodiment, the second upper chord 140 , the second web chord 142 , and the lower chord 144 are all steel bars, wherein the cross-sectional diameter of the steel bars of the second upper chord 140 is larger than the cross-sectional diameter of the steel bars of the first web chord 132 and the cross-sectional diameter of the steel bars of the lower chord 144 , so as to enhance the supporting effect of the second upper chord 140 and effectively improve the rigidity and strength of the precast panel 10 .

[0089] Optionally, the second upper chord 140 , the second web chord 142 and the lower chord 144 may also be steel pipes or steel sections, etc., which is not specifically limited in the present application.

[0090] In this embodiment, each second truss 14 includes one second upper chord 140, two second web chords 142, and two lower chords 144. The two lower chords 144 are spaced apart along the width of the prestressed concrete slab 11. In a cross-section along the length of the prestressed concrete slab 11, the two second web chords 142 are arranged in a V-shape, supporting the second upper chord 140 from both sides and improving support reliability. The second web chords 142 are arranged in a wavy pattern along the length of the prestressed concrete slab 11, with the crests of the second web chords 142 connected to the second upper chord 140 and the troughs of the second web chords 142 connected to the corresponding lower chords 144 and embedded within the prestressed concrete slab 11. The second web chords 142 form multiple connection points on the second upper chords 140 and lower chords 144, providing uniform support between the first upper chord 130 and the prestressed concrete slab 11.

[0091] Optionally, the second truss 14 may further include other numbers of second upper chords 140 , second web chords 142 and lower chords 144 , which is not specifically limited in the present application.

[0092] In this embodiment, the first truss 13 is not provided between the concrete block 12 and the end portion of the prestressed concrete slab 11 adjacent in the length direction, and the second truss 14 extends approximately from one end to the other end of the prestressed concrete slab 11 in the length direction. Therefore, the total span of the first trusses 13 between the multiple concrete blocks 12 in the length direction of the prestressed concrete slab 11 is smaller than the total span of the second trusses 14 in the length direction of the prestressed concrete slab 11. In other words, the provision of trusses between the concrete blocks 12 and the end portion of the prestressed concrete slab 11 adjacent in the length direction can be relatively omitted. The additional provision of trusses here is relatively more costly for improving the strength and rigidity of the precast panel 10, and the improved rigidity is very limited. The first trusses 13 and the second trusses 14 can already provide the precast panel 10 with reliable strength and rigidity, thereby saving the cost and reducing the weight of the precast panel 10.

[0093] The present application can also provide a precast panel 10, which only includes the above-mentioned prestressed concrete panel 11 and multiple concrete blocks 12. The multiple concrete blocks 12 are arranged on the prestressed concrete panel 11 at intervals along the length direction of the prestressed concrete panel 11. The multiple concrete blocks 12 can strengthen the prestressed concrete panel 11 to improve the overall strength and rigidity of the precast panel 10.

[0094] In one application scenario, the required span of the precast panel 10 is relatively small, for example, the span of the precast panel 10 along the length direction is less than or equal to 3.5 meters, and the required stiffness and strength of the precast panel 10 are relatively low. Therefore, by arranging multiple concrete blocks 12 on the prestressed concrete panel 11, the precast panel 10 can meet the required stiffness and strength requirements.

[0095] The present application may also provide a prefabricated panel 10 , which only includes the above-mentioned prestressed concrete panel 11 , a plurality of concrete blocks 12 and a first truss 13 .

[0096] For example, in one application scenario, the span of the precast panel 10 is 4.5 meters. By arranging multiple concrete blocks 12 and a first truss 13 on the prestressed concrete panel 11, the precast panel 10 can achieve the required stiffness and strength requirements.

[0097] The present application may also provide a prefabricated panel 10 , which only includes the above-mentioned prestressed concrete panel 11 , a plurality of concrete blocks 12 and a second truss 14 .

[0098] For example, in one application scenario, the span of the precast panel 10 is 4.5 meters. By arranging a plurality of concrete blocks 12 and a second truss 14 on the prestressed concrete panel 11, the precast panel 10 can achieve the required stiffness and strength requirements.

[0099] When the span of the precast panel 10 reaches 6.5 meters, the precast panel 10 may include the above-mentioned prestressed concrete panel 11, multiple concrete blocks 12, first trusses 13 and second trusses 14, so that the precast panel 10 can meet the required rigidity and strength requirements.

[0100] Therefore, according to the different span specifications of the precast panels 10, a variety of precast panels 10 with different structures can be set up, wherein the number of concrete blocks 12 can also be adaptively adjusted according to the span of the precast panels 10, and the distribution number and position of the second trusses 14 along the width direction can be adjusted according to the width of the precast panels 10, which will not be repeated.

[0101] See also Figure 3 、 Figure 5 and Figure 6 The precast panel 10 further includes two first embedded parts 15 and at least one second embedded part 16. The first embedded parts 15 and the second embedded parts 16 are arranged on the corresponding concrete blocks 12, wherein the second embedded part 16 is located between the two first embedded parts 15, and an axial hole 150 for detachable connection of the inclined-stayed assembly 20 is formed on the first embedded part 15; wherein the axes of the two axial holes 150 are close to each other on the side of the prestressed concrete panel 11 away from the concrete block 12.

[0102] Here, "close together" means that the axes of the two axial holes 150 gradually approach each other from the side of the prestressed concrete slab 11 away from the concrete block 12 and can intersect at one point. The intersection point is located on the side of the prestressed concrete slab 11 away from the concrete block 12. The "close together" mentioned later can be understood with reference to the description here.

[0103] For example, in one embodiment, the axis of the axial hole 150 is perpendicular to the prefabricated panel 10. Then, after the diagonal assembly 20 is connected to the axial hole 150, there will inevitably be a bent node in the middle of the diagonal assembly 20 itself, and the bent node will inevitably reduce the supporting force provided by it to the prefabricated panel 10.

[0104] Relatively speaking, the axis of the axial hole 150 is inclined relative to the precast panel 10, and the axes of the two axial holes 150 are limited to be close to each other on the side of the prestressed concrete panel 11 away from the concrete block 12, so that the inclined assembly 20 connected to the axial hole 150 can be arranged along the axis of the axial hole 150, thereby reducing the bending degree of the bending node on the inclined assembly 20, or further eliminating the bending node in the middle of the inclined assembly 20, which can facilitate the force transmission of the inclined assembly 20, improve the force transmission efficiency of the inclined assembly 20, and provide a better support effect for the precast panel 10.

[0105] In this embodiment, Figure 5 As shown, the concrete blocks 12 corresponding to the two first embedded parts 15 have a first supporting wall 110 and a second supporting wall 112 on the opposite sides of each other, which are inclined relative to the prestressed concrete slab 11. The first supporting wall 110 and the second supporting wall 112 intersect on the side of the prestressed concrete slab 11 facing the concrete block 12. One of the first embedded parts 15 is arranged on the first supporting wall 110 on the corresponding concrete block 12, and the other first embedded part 15 is arranged on the second supporting wall 112 on the corresponding concrete block 12.

[0106] By embedding the two first embedded parts 15 in the first supporting wall 110 and the second supporting wall 112 on both sides, respectively, the two first embedded parts 15 are arranged to be inclined toward each other, so that the axes of the two axial holes 150 can be close to each other on the side of the prestressed concrete slab 11 away from the concrete block 12, thereby providing the inclined-stayed assembly 20 with a more efficient connection and force transmission method.

[0107] In this embodiment, the axes of the axial holes 150 of the two first embedded parts 15 are respectively perpendicular to the first support wall 110 or the second support wall 112 on which they are arranged, so that the first support wall 110 or the second support wall 112 can provide better support for the corresponding first embedded parts 15.

[0108] Optionally, the axis of the axial hole 150 may also form an acute angle with the first supporting wall 110 or the second supporting wall 112 on which it is provided, while still maintaining the axis of the axial hole 150 being inclined with respect to the prestressed concrete slab 11 .

[0109] In this embodiment, refer to Figure 5 and Figure 9 ,in Figure 9 yes Figure 2 The structure of the support frame in the precast slab is shown. The first embedded component 15 includes a support frame 152 and an embedded pipe 154. The support frame 152 is supported on the first support wall 110 or the second support wall 112 to provide support for the diagonal-stayed assembly 20. The embedded pipe 154 is fixed relative to the support frame 152 and embedded in the concrete block 12 and the prestressed concrete slab 11 to provide a passage for connecting the diagonal-stayed assembly 20 to the shaft hole 150 and prevent the concrete from blocking the shaft hole 150 and the diagonal-stayed assembly 20.

[0110] Support frame 152 includes a support plate 151 and anchor bars 153. Support plate 151 is supported on first support wall 110 or second support wall 112. Anchor bars 153 are connected to support plate 151 and extend into concrete block 120. Three or four anchor bars 153 are fixed to support plate 151 facing first support wall 110 or second support wall 112. Anchor bars 153 are deeply embedded in concrete block 120 to improve the reliability of fixing support frame 152.

[0111] In one embodiment, if Figure 9 As shown, an axial hole 150 is provided on the support plate 151 , and an embedded tube 154 is communicated with the axial hole 150 . The inclined-stayed assembly 20 passes through the embedded tube 154 and is detachably connected to the axial hole 150 on the support plate 151 .

[0112] In another embodiment, the embedded tube 154 is fixed to one side of the support plate 151 , and the inner wall of the embedded tube 154 is provided with threads and serves as an axial hole, so that the inclined-stayed assembly 20 and the embedded tube 154 are detachably connected.

[0113] like Figure 11 As shown, in other embodiments, the first embedded part 15 may also include a support plate 151 and a bolt sleeve 155. The support plate 151 and the bolt sleeve 155 are connected and embedded in the concrete block 12 and the prestressed concrete slab 11. The bolt sleeve 155 is provided with an axial hole 150, and the bolt sleeve 155 is inclined relative to the prestressed concrete slab 11. The axes of the two axial holes 150 are close to each other on the side of the prestressed concrete slab 11 away from the concrete block 12, and the bolt sleeve 155 and one end of the inclined assembly 20 are detachably connected.

[0114] See Figure 3 and Figure 6A portion of the second embedded part 16 is embedded in the concrete block 12, and another portion of the second embedded part 16 is embedded in the prestressed concrete slab 11, which can further enhance the connection strength between the corresponding concrete block 12 and the prestressed concrete slab 11, and improve the fastening force of the concrete block 12 and the prestressed concrete slab 11 to the second embedded part 16.

[0115] The second embedded part 16 is a bolt sleeve, one end of which is closed and the inner wall of the bolt sleeve is provided with a thread. The other end of the bolt sleeve is connected to the side of the prestressed concrete slab 11 away from the concrete block 12 for connection with the support assembly 30. In other words, the support assembly 30 is threadedly connected to the bolt sleeve.

[0116] like Figure 1 As shown, the first ends of the two groups of inclined-stayed assemblies 20 are used to be detachably connected to the prefabricated panel 10 and are placed together on one side of the prefabricated panel 10; the support assembly 30 is located between the two inclined-stayed assemblies 20, and the first end of the support assembly 30 is supported on the side of the prefabricated panel 10 facing the inclined-stayed assembly 20; the tensioning assembly 40 is connected between the second ends of the inclined-stayed assemblies 20, wherein the second end of the support assembly 30 is connected to the second end of the inclined-stayed assembly 20 or the tensioning assembly 40, so as to provide supporting force to the prefabricated panel 10 under the tension of the two groups of inclined-stayed assemblies 20; wherein the tensioning assembly 40 is used to adjust the tension of the inclined-stayed assemblies 20 and the support assembly 30.

[0117] See Figure 1 and Figure 10 ,in Figure 10 yes Figure 1 An enlarged structural diagram of area A in the support system is shown. The two groups of diagonal-stayed assemblies 20 each include a first connector 22 and a diagonal brace 24. The first connector 22 is disposed on the precast panel 10 and is inclined relative to the precast panel 10. The first ends of the diagonal brace 24 are connected to the first connector 22. The diagonal brace 24 of the two groups of diagonal-stayed assemblies 20 are aligned with each other, with the extension lines of the first connectors 22 of the two groups of diagonal-stayed assemblies 20 aligned with each other on the side of the precast panel 10 facing the diagonal brace 24.

[0118] Specifically, the first connecting member 22 is obliquely inserted into the prefabricated panel 10 through the embedded tube 154 and fixed to the axial hole 150. For example, the axial hole 150 is threadedly engaged with the first connecting member 22, or the end of the first connecting member 22 passes through the axial hole 150 and is fixed with a fastener, so that the axis of the first connecting member 22 coincides with the axis of the axial hole 150, and then the first connecting member 22 is arranged at an angle to the prefabricated panel 10, and the oblique rods 24 of the two groups of oblique-stayed assemblies 20 are close to each other, which can relatively reduce the angle between the oblique rods 24 and the extension line of the first connecting member 22, and even the oblique rods 24 are arranged along the extension line of the first connecting member 22 to avoid the angle being too large, thereby improving the force transmission efficiency of the oblique-stayed assembly 20.

[0119] In some embodiments, the angle between the inclined rod 24 of the same group of inclined-stayed assemblies 20 and the extension line of the first connecting member 22 is in the range of 0 to 10, for example, it can be 0, 3, 5, 8 or 10, so as to further ensure this efficient force transmission method of the inclined-stayed assembly 20 through parameter limitation.

[0120] like Figure 12 As shown, Figure 12 yes Figure 10 The diagram shows the structure of the first connector in the diagonal-stayed assembly. In this embodiment, the first connector 22 includes a connecting rod 220 and a connecting head 224. The connecting rod 220 is detachably connected to the precast panel 10, and the connecting head 224 is connected to the first end of the diagonal-stayed rod 24. A shoulder 226 is formed at the junction of the connecting rod 220 and the connecting head 224, and the shoulder 226 abuts against one side of the precast panel 10.

[0121] Specifically, see Figure 10 、 Figure 12 and Figure 13 ,in Figure 13 yes Figure 10 The diagram shows a schematic diagram of the structure of the diagonal-stayed assembly from a bottom view. The connecting rod 220 is threaded at one end away from the connector 224. The connecting rod 220 is inserted into the embedded tube 154 and passed through the axial hole 150 to be secured with a fastener. The shoulder 226 abuts against the precast panel 10, facilitating the securing of the first connecting member 22 and preventing it from moving. The connector 224 is provided with a connection hole. The first end of the diagonal-stayed rod 24 is provided with two spaced-apart connecting plates 240, each with a connection hole. The connector 224 is inserted between the two connecting plates 240 and articulated with a pin bolt and nut. This ensures better alignment between the first connecting member 22 and the diagonal-stayed rod 24, facilitating improved force transmission efficiency.

[0122] See Figure 1 and Figure 14 , Figure 14 yes Figure 1 An enlarged schematic diagram of area B in the support system is shown. The support assembly 30 includes a second connector 32 and two support rods 34. The second connector 32 is detachably connected to one side of the precast panel 10 and is provided with two spaced-apart adapters 320. The first ends of the two support rods 34 are connected to corresponding adapters 320.

[0123] The adapter portion 320 may be an adapter hole or an adapter shaft to be detachably connected to the first end of the support rod 34 .

[0124] Specifically, the second connecting member 32 is detachably connected to the second embedded member 16 through a fastener, and the second connecting member 32 is located on one side of the prefabricated panel 10. Two adapter portions 320 spaced apart from each other are provided on the second connecting member 32 to connect to the first ends of the two support rods 34 respectively, and the first ends of the two support rods 34 can be close to each other, and the supporting strength of the prefabricated panel 10 can be strengthened by jointly supporting the second connecting member 34.

[0125] In some application scenarios, the first ends of two support rods 34 are hinged to the same point of the second connecting member 32, which makes the hinge on the second connecting member 32 too thick, making assembly difficult and not conducive to the installation of the support assembly 30; or, the two support rods 34 are respectively connected to the prefabricated panel 10 through the corresponding second connecting member 32, which will cause the distance between the first ends of the two support rods 34 to be too large, and they cannot support each other, and their support efficiency is relatively low.

[0126] The present application provides a second connecting member 32 that can be detachably connected to one side of the prefabricated panel 10, and two spaced-apart adapters 320 can be provided on the second connecting member 32. The first ends of the two support rods 34 are respectively connected to the corresponding adapters 320, so that the spacing between the two adapters 320 can be set to be relatively small, and the first ends of the two support rods 34 do not need to be hinged to each other at the same point, causing the thickness of the hinge to be too thick. The two support rods 34 can also support each other through the second connecting member 32, which is more conducive to improving the support efficiency of the prefabricated member 10.

[0127] like Figure 15 As shown, Figure 15 yes Figure 14 The following is a schematic diagram of the three-view structure of the second connector in the support assembly. Specifically, the second connector 32 includes a top plate 322, an adapter plate 324, and at least two reinforcing plates 326. The top plate 322 is fixed to the precast panel 10, the adapter plate 324 is perpendicularly connected to the side of the top plate 322 facing away from the precast panel 10, and the at least two reinforcing plates 326 are respectively connected to the top plate 322 and the adapter plate 324. The adapter plate 324 is provided with an adapter portion 320 that is detachably connected to the support rod 34.

[0128] like Figure 16 As shown, Figure 16 yes Figure 14 The schematic side view of the support assembly is shown. In this embodiment, the adapter portion 320 is a adapter hole. The first end of the support rod 34 is provided with two spaced apart fixing plates 340, each of which has a through hole. The two fixing plates 340 are located on either side of the adapter plate 324. The adapter holes and the through hole are connected by fasteners, so that the first end of the support rod 34 is hingedly connected to the adapter portion 320 of the second connecting member 32.

[0129] like Figure 15 As shown, protrusions 323 are provided on both sides of the top plate 322, and two reinforcing plates 326 are respectively located on both sides of the two protrusions 323 to reinforce the protrusions 323 to prevent the top plate 322 from deformation and failure. A through hole 325 is provided on the protrusion 323, and the through hole 325 is penetrated by a fastener and connected to the prefabricated plate 10 to fix the second connecting member 32 to one side of the prefabricated plate 10. By providing the protrusion 323, the consumables of the top plate 322 can be saved and the weight can be reduced.

[0130] Optionally, in some embodiments, the support assembly 30 may also include only at least two support rods 34, the first ends of the at least two support rods 34 are supported on the side of the prefabricated panel 10 facing the diagonal rod 24, and the second ends of the at least two support rods 34 are respectively connected to the second ends of the corresponding diagonal rods 24 or the tensioning assembly 40.

[0131] For example, one end of the second embedded part 16 protrudes from the prestressed concrete slab 11 , and the first end of the support rod 34 can be directly and detachably connected to the second embedded part 16 .

[0132] The number of support assemblies 30 is at least one. When there is only one group of support assemblies 30, the second ends of the two support rods 34 are detachably connected to the second ends of the corresponding diagonal tie rods 24, and the two ends of the tensioning assembly 40 are connected between the second ends of the diagonal tie rods 20. When there are two, three, or other multiple groups of support assemblies 30, the multiple groups of support assemblies 30 are arranged along the spacing between the two groups of diagonal tie rods 20. The second ends of the support rods 24 on both sides of the multiple groups of support assemblies 30 are detachably connected to the second ends of the diagonal tie rods 24, and the support rods 24 located in the middle of the multiple groups of support assemblies 30 are connected to the tensioning assembly 40.

[0133] See Figure 1 , the tensioning assembly 40 includes a length adjustment mechanism based on a thread.

[0134] See Figure 17 , Figure 17 yes Figure 1 An enlarged schematic diagram of the structure of region C in the support system is shown. In this embodiment, the tensioning assembly 40 includes a turnbuckle 42 and two horizontal tie rods 44. The first ends of the two horizontal tie rods 44 are detachably connected to the second ends of the two diagonal tie rods 24, and the ends of the turnbuckle 42 are connected to the second ends of the two horizontal tie rods 44. The tensioning degree of the diagonal tie assembly 20 and the support assembly 30 can be adjusted by adjusting the overlap between the turnbuckle 42 and the second ends of the horizontal tie rods 44. Consequently, the supporting force of the two sets of diagonal tie assemblies 20 and the support assembly 30 is applied to the precast panel 10.

[0135] The basket bolt 42 includes a first spiral segment 420, an adjustment segment 422 and a second spiral segment 424. The first spiral segment 420 and the second spiral segment 424 are arranged at opposite ends of the adjustment segment 422. The horizontal pull rod 44 includes a third spiral segment 440. The third spiral segment 440 is spirally connected to the first spiral segment 420 or the second spiral segment 424. The adjustment segment 422 is used to adjust the degree of overlap between the first spiral segment 420 and the second spiral segment 424 and the third spiral segment 440.

[0136] In this embodiment, the first spiral segment 420 and the second spiral segment 424 are both threaded sleeves, the third spiral segment 440 is a stud, and the thread rotation directions of the two third spiral segments 440 are opposite, and the thread rotation directions of the first spiral segment 420 and the second spiral segment 424 are opposite, so that the horizontal length of the tensioning assembly 40 can be adjusted by screwing the threads together, and then the tensioning degree of the inclined assembly 20 and the support assembly 30 can be adjusted.

[0137] Optionally, the first spiral segment 420 and the second spiral segment 424 are both studs, and the third spiral segment 440 is a threaded sleeve; or, one of the first spiral segment 420 and the second spiral segment 424 is a stud, and the other is a threaded sleeve, and the third spiral segments 440 on the two horizontal pull rods 44 are respectively a stud and a threaded sleeve.

[0138] The adjustment section 422 is provided with an adjustment hole 423 , so as to adjust the rotation of the turnbuckle 42 relative to the horizontal pull rod 44 through the adjustment hole 423 , thereby adjusting the overlap degree between the turnbuckle 42 and the second end of the horizontal pull rod 44 .

[0139] Furthermore, the adjustment section 422 is prismatic, so that a tool such as a wrench can be used to clamp and adjust the overlap between the turnbuckle bolt 42 and the second end of the horizontal pull rod 44, and the adjustment hole 423 is provided in the prismatic adjustment section 422, so that the overlap between the turnbuckle bolt 42 and the second end of the horizontal pull rod 44 can be adjusted by a variety of tools, thereby improving the adjustment convenience of the tensioning assembly 40.

[0140] See also Figure 17 and Figure 18 , Figure 18 yes Figure 17 The horizontal tie rod in the tensioning assembly is shown in the figure. The horizontal tie rod 44 also includes a tie rod section 442 and a connecting section 443. The third spiral section 440 and the connecting section 443 are respectively provided at the ends of the tie rod section 442. The connecting section 443 is configured to be detachably connected to the second end of the inclined tie assembly 20. That is, the connecting section 443 is detachably connected to the second end of the inclined tie rod 24.

[0141] The horizontal pull rod 44 also includes a snap-in section 445, which is arranged between the third spiral section 440 and the pull rod section 442. The snap-in section 445 is used to provide a snap-in position so that the horizontal pull rod 44 can be limited in rotation to avoid the torsional force of the horizontal pull rod 44 being transmitted to the inclined assembly 20 and the support assembly 30 when adjusting the degree of overlap.

[0142] Specifically, the clamping section 445 is prismatic. When adjusting the degree of overlap, the clamping section 445 is first clamped by a tool to fix the horizontal pull rod 44 from being twisted, and then the tool is used to act on the adjustment section 422 or the adjustment hole 423 to rotate the basket bolt 42 relative to the horizontal pull rod 44, thereby adjusting the tensioning degree of the diagonal assembly 20 and the support assembly 30, thereby avoiding damage caused by the torsional force on the tensioning assembly 40 being transmitted to the diagonal assembly 20 and the support assembly 30.

[0143] See also Figure 1 、 Figure 19 and Figure 20 ,in Figure 19 yes Figure 1 The enlarged structural diagram of the D area in the support system is shown. Figure 20 yes Figure 19 Schematic diagram of the structure of area D in the support system as viewed from above.

[0144] The second end of the diagonal rod 24 is provided with a first connecting plate 241, the second end of the support rod 34 is provided with two spaced second connecting plates 341, and the first end of the horizontal rod 44 is provided with two spaced third connecting plates 441. The first connecting plate 241, the second connecting plate 341 and the third connecting plate 441 are all provided with connecting holes 243, and the first connecting plate 241, the second connecting plate 341 and the third connecting plate 441 are coaxially connected by fasteners passing through the connecting holes; wherein the first connecting plate 241 is arranged between the two third connecting plates 441, and the two third connecting plates 441 are arranged between the two second connecting plates 341, so that the axes of the diagonal rod 24, the support rod 34 and the horizontal rod 44 can intersect at the same point, which is beneficial to improving the force transmission efficiency between them.

[0145] Optionally, when there are multiple groups of support assemblies 30, the support rods 24 located in the middle of the multiple groups of support assemblies 30 are connected to the tensioning assembly 40. For example, a position for connecting to the support rods 24 is further provided on the horizontal tie rods 44, and the support rods 24 located in the middle of the multiple groups of support assemblies 30 are connected to the horizontal tie rods 44; or, the tensioning assembly 40 includes multiple turnbuckles 42 and multiple horizontal tie rods 44, wherein the two ends of the turnbuckles 42 are respectively connected to the horizontal tie rods 44, and the second ends of the support rods 24 can be connected to the ends of the horizontal tie rods 44, or the second ends of the support rods 24 are connected to the middle of the horizontal tie rods 44. The degree of overlap between the turnbuckles 42 and the horizontal tie rods 44 is used to adjust the tension of each support assembly 30 and the diagonal assembly 20 to provide supporting force to the precast panel 10.

[0146] Further, if Figure 5 、 Figure 6 、 Figure 21 and Figure 22 As shown, Figure 21 yes Figure 2 Another cross-sectional structural diagram of the prefabricated panel shown in FIG. Figure 22 yes Figure 21 The precast panel 10 further includes a plug 17, which is used to seal the hole formed by the first and second embedded parts 15, 16 on the side of the prestressed concrete panel 11 facing away from the concrete block 12 to prevent concrete from clogging the hole. The plug 17 also forms a cup-shaped opening, which can be used to seal the hole later.

[0147] This application also provides a support system 100, which includes the aforementioned diagonal-stayed assembly 20 and support assembly 30. For example, if the span of a precast panel 10 is relatively small, the required support strength of the precast panel 10 can be met by detachably installing the diagonal-stayed assembly 20 and support assembly 30 before the cast-in-place layer is constructed. This will not be described in detail.

[0148] The present application also provides a support system 100, which includes two groups of inclined-stayed assemblies 20, support assemblies 30 and tensioning assemblies 40 as described above, and the two groups of inclined-stayed assemblies 20, support assemblies 30 and tensioning assemblies 40 are used to be detachably installed on one side of the prefabricated panel 10 to provide stronger support for the prefabricated panel 10, which will not be repeated here.

[0149] Different from the prior art, the present application discloses a precast panel and its support system. By arranging multiple concrete blocks along the length direction of the prestressed concrete panel, and arranging a first truss between two adjacent concrete blocks, and by respectively burying the two ends of the first upper chord member in the first truss in the two adjacent concrete blocks, the tensile strength of the material of the first upper chord member is utilized to make the two adjacent concrete blocks support each other and enhance the rigidity of the precast panel. The first upper chord member is spaced apart from the prestressed concrete panel in the direction perpendicular to the prestressed concrete panel, and the first web chord member is connected to the first upper chord member and partially buried in the prestressed concrete panel, thereby the first web chord member is connected to the first upper chord member and partially buried in the prestressed concrete panel. The components support the first upper chord component, which can prevent the first upper chord component from deforming and losing its function, and further increase the integrity between the concrete block and the prestressed concrete slab, thereby forming a stronger reinforced structure, which can significantly improve the stiffness and strength of the precast slab. Therefore, the precast slab provided by the present application can increase the span due to the improved stiffness and strength, so as to be more suitable for large-span scenarios. In small-span scenarios, the thickness of the prestressed concrete slab can be relatively thinned, thereby reducing the thickness of the precast slab, thereby saving the production cost of the precast slab and improving the economy of the precast slab.

[0150] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A prefabricated panel, characterized in that: The prefabricated panel comprises: prestressed concrete slabs; A plurality of concrete blocks are arranged on the prestressed concrete slab at intervals along the length direction of the prestressed concrete slab; a first truss, disposed between two adjacent concrete blocks, comprising a first upper chord and a first web chord, wherein both ends of the first upper chord are respectively embedded in the two adjacent concrete blocks and spaced apart from the prestressed concrete slab in a direction perpendicular to the slab plane of the prestressed concrete slab, and the first web chord is connected to the first upper chord and partially embedded in the prestressed concrete slab; In each of the first trusses, there is one first upper chord and two first web chords. In a cross section along the length of the prestressed concrete slab, the two first web chords are arranged in an ʌ shape. The first web chords are arranged in a wave shape along the length of the prestressed concrete slab, wherein the crest of the first web chord is connected to the first upper chord, and the trough of the first web chord is embedded in the prestressed concrete slab. The precast panel further includes two first embedded parts and at least one second embedded part, wherein the first embedded parts and the second embedded parts are arranged on the corresponding concrete blocks, wherein the second embedded part is located between the two first embedded parts, and an axial hole for detachable connection is formed on the first embedded part; The axes of the two axial holes are close to each other on a side of the prestressed concrete slab facing away from the concrete block.

2. The prefabricated panel according to claim 1, characterized in that: The first truss is composed of the first upper chord and a first web chord.

3. The prefabricated panel according to claim 1, characterized in that: The precast panel further includes at least one second truss, which is spaced apart from the plurality of concrete blocks along the width direction of the prestressed concrete panel and partially embedded in the prestressed concrete panel.

4. The prefabricated panel according to claim 3, characterized in that: The second truss includes a second upper chord, a second web chord and a lower chord, the second upper chord and the lower chord are spaced apart along the vertical direction, the second web chord is connected between the second upper chord and the lower chord, the lower chord is embedded in the prestressed concrete slab, and the second upper chord is spaced apart from the prestressed concrete slab along the vertical direction.

5. The prefabricated panel according to claim 4, characterized in that: In each of the second trusses, the number of the second upper chord is one, the number of the second web chords and the number of the lower chords are two respectively, the two lower chords are arranged at intervals along the width direction of the prestressed concrete slab, and in a cross section along the length direction of the prestressed concrete slab, the two second web chords are arranged in an ʌ shape, and the second web chords are arranged in a wavy shape along the length direction of the prestressed concrete slab, wherein the crest of the second web chord is connected to the second upper chord, and the trough of the second web chord is connected to the corresponding lower chord and embedded in the prestressed concrete slab.

6. The prefabricated panel according to claim 3, characterized in that: A total span of the first trusses between the plurality of concrete blocks along the length direction of the prestressed concrete slab is smaller than a total span of the second trusses along the length direction of the prestressed concrete slab.

7. The prefabricated panel according to claim 3, characterized in that: The number of the second trusses is at least two and is spaced apart along the width direction of the prestressed concrete slab. The plurality of concrete blocks and the first trusses are located in a spaced area between the second trusses.

8. The prefabricated panel according to claim 1, characterized in that: The concrete blocks corresponding to the two first embedded parts have first supporting walls and second supporting walls on opposite sides of each other, which are arranged obliquely relative to the prestressed concrete slab. The first supporting wall and the second supporting wall intersect on the side of the prestressed concrete slab facing the concrete blocks. One of the first embedded parts is arranged on the first supporting wall on the corresponding concrete block, and the other first embedded part is arranged on the second supporting wall on the corresponding concrete block.

9. The prefabricated panel according to claim 8, characterized in that: The axes of the axial holes of the two first embedded parts are respectively perpendicular to the first supporting wall or the second supporting wall on which they are provided.

10. The prefabricated panel according to claim 8, characterized in that The first embedded part includes a support frame and an embedded pipe. The support frame is supported on the first supporting wall or the second supporting wall. The embedded pipe is fixed relative to the support frame and is embedded in the concrete block and the prestressed concrete slab.

11. The prefabricated panel according to claim 10, characterized in that: The support frame includes a support plate and anchor bars. The support plate is supported on the first support wall or the second support wall. The anchor bars are connected to the support plate and extend into the concrete block.

12. The prefabricated panel according to claim 11, characterized in that: The support plate is provided with the axial hole, and the embedded pipe is communicated with the axial hole.

13. The prefabricated panel according to claim 1, characterized in that The first embedded part includes a support plate and a bolt sleeve. The support plate and the bolt sleeve are connected and embedded in the concrete block and the prestressed concrete slab. The bolt sleeve is provided with the axial hole.

14. The prefabricated panel according to claim 1, characterized in that A portion of the second embedded part is embedded in the concrete block, and another portion of the second embedded part is embedded in the prestressed concrete slab.

15. The prefabricated panel according to claim 14, characterized in that The second embedded part is a bolt sleeve, one end of which is closed, an inner wall of which is provided with a thread, and the other end of which is connected to a side of the prestressed concrete slab away from the concrete block.

16. A prefabricated panel support system, characterized in that: The support system includes a prefabricated panel according to any one of claims 1 to 15, two groups of inclined-stayed assemblies, and a support assembly, wherein the first ends of the two groups of inclined-stayed assemblies are detachably connected to one side of the prefabricated panel, and the support assembly is located between the two groups of inclined-stayed assemblies and connected between the second ends of the inclined-stayed rods of the two groups of inclined-stayed assemblies and the prefabricated panel.

17. The support system according to claim 16, wherein: The two groups of inclined-stayed assemblies respectively include a first connecting member and an inclined rod. The first connecting member is arranged on the prefabricated plate and is inclined to the prefabricated plate. The first end of the inclined rod is connected to the first connecting member, and the inclined rods of the two groups of inclined-stayed assemblies are close to each other. The second end of the inclined rod is connected to one end of the support assembly.

18. The support system according to claim 17, wherein: The angle between the inclined rods of the same group of inclined-stayed assemblies and the extension line of the first connecting member is in the range of 0 to 10.

19. The support system according to claim 17, wherein: The support system further includes a tensioning assembly connected between the second ends of the oblique tie rods of the two groups of oblique tie rods, and the tensioning assembly is used to adjust the tension between the second ends of the two oblique tie rods.

20. The support system according to claim 19, wherein: The support assembly includes a second connecting member and two support rods. The second connecting member is detachably connected to one side of the prefabricated panel, and the second connecting member is provided with two adapters spaced apart from each other. The first ends of the two support rods are respectively connected to the corresponding adapters, and the second ends of the two support rods are respectively connected to the second ends of the corresponding diagonal rods or the tensioning assembly.

21. The support system according to claim 19, wherein: The tensioning assembly includes two horizontal tie rods and a turnbuckle, wherein the first ends of the two horizontal tie rods are detachably connected to the second ends of the corresponding diagonal tie rods, and the two ends of the turnbuckle are respectively connected to the second ends of the two horizontal tie rods; The degree of tension between the second ends of the diagonal tie rods is adjusted by adjusting the degree of overlap between the turnbuckle bolt and the second end of the horizontal tie rod.

22. The support system according to claim 21, wherein: The basket bolt includes a first spiral section, an adjustment section and a second spiral section. The first spiral section and the second spiral section are arranged at opposite ends of the adjustment section. The second end of the horizontal pull rod is provided with a third spiral section. The third spiral section is spirally connected to the first spiral section or the second spiral section. The adjustment section is used to drive the first spiral section and the second spiral section to rotate relative to the third spiral section.

23. The support system according to claim 22, wherein: The adjusting section is prismatic and is provided with an adjusting hole.

24. The support system according to claim 22, wherein: The horizontal pull rod also includes a clamping section, a pull rod section and a connecting section. The third spiral section, the clamping section, the pull rod section and the connecting section are connected in sequence. The clamping section is used to provide a clamping position so that the horizontal pull rod can be limited in rotation. The connecting section is used to be detachably connected to the second end of the inclined assembly.

25. The support system according to claim 24, wherein: The second end of the inclined-stayed assembly is provided with a first connecting plate, the second end of the supporting assembly is provided with two spaced-apart second connecting plates, the connecting section includes two spaced-apart third connecting plates, the first connecting plate, the second connecting plate and the third connecting plate are all provided with connecting holes, and the first connecting plate, the second connecting plate and the third connecting plate are coaxially connected by fasteners passing through the connecting holes; Wherein, the first connecting plate is arranged between the two third connecting plates, and the two third connecting plates are arranged between the two second connecting plates.

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