Prefabricated reinforced concrete component shelf plate
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JINDING NEW BUILDING MATERIALS CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-24
Smart Images
Figure CN224549454U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building component technology, specifically to a prefabricated reinforced concrete component frame. Background Technology
[0002] There are many problems with the use of existing prefabricated reinforced concrete slab structures:
[0003] Using a single layer of longitudinal steel bars to bear longitudinal tension results in concentrated stress and insufficient bearing capacity; the transverse ties are simple, mostly single-point or unidirectional, with weak shear and deformation resistance; the node connections are simply snapped together with hooks on the web members, resulting in single force transmission, easy loosening of the steel bars, poor overall integrity, and easy cracking, making it difficult to meet the high-performance requirements of building structures. Utility Model Content
[0004] To address the aforementioned technical problems, this application solves the problem in the prior art where a single layer of longitudinal steel bars is used to bear longitudinal tensile force, resulting in concentrated stress and insufficient bearing capacity.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a prefabricated reinforced concrete component slab, including a concrete base slab, an upper chord is suspended above the concrete base slab, a second longitudinal steel bar is longitudinally arranged at the middle position inside the concrete base slab, and a first longitudinal steel bar is symmetrically arranged on the left and right sides of the second longitudinal steel bar on the concrete base slab, and the second longitudinal steel bar is located above the layer where the two first longitudinal steel bars are located.
[0006] The concrete base slab is also provided with a horizontally arranged first serpentine steel bar. The first serpentine steel bar is located between the second longitudinal steel bar and the two first longitudinal steel bars. The first serpentine steel bar has multiple horizontally arranged (horizontal is along the width direction) and straight first parallel bars. The first parallel bars are perpendicular to the length direction of the concrete base slab.
[0007] The upper chord and the two first longitudinal steel bars are supported and connected by multiple lifting frames arranged at equal intervals along the axial direction. Each lifting frame is Λ-shaped, and the top of each lifting frame has a first bent welded part that cooperates with the upper chord. The upper chord is welded to the first bent welded part. Each lifting frame has a first bent part with an upward opening at its left and right ends, and a second bent part with a downward opening at the end of the first bent part. Each first bent part is snapped into the outer surface of a first longitudinal steel bar. Each segment of the first parallel bar of the first serpentine steel bar passes through the two second bent parts on the corresponding lifting frame.
[0008] To better realize this utility model, the plane where the lifting frame is located coincides with the plane where the first curved part is located, the plane where the first curved part is located is perpendicular to the plane where the second curved part is located, and the first parallel bar of each segment of the first serpentine steel bar is tangentially engaged with the outer peripheral wall of the second curved part and the outer peripheral wall of the first longitudinal steel bar.
[0009] To better realize this utility model, the concrete base slab is further provided with four longitudinally arranged third longitudinal steel bars located on the same horizontal plane. The plane where the four third longitudinal steel bars are located is located below the plane where the two first longitudinal steel bars are located. One first longitudinal steel bar is connected to the corresponding leftmost third longitudinal steel bar by a plurality of first tie bars arranged axially at equal intervals. Another first longitudinal steel bar is connected to the corresponding rightmost third longitudinal steel bar by a plurality of first tie bars arranged axially at equal intervals.
[0010] Both ends of the first tie bar are provided with a third bend. The third bend at one end of the first tie bar is connected to a first longitudinal steel bar, and the third bend at the other end of the first tie bar is connected to a third longitudinal steel bar.
[0011] To better realize this utility model, the second longitudinal steel bar is further connected to the four third longitudinal steel bars by a second tie bar. The second tie bar includes a first support part in the shape of a Λ and second support parts located at the left and right ends of the first support part. The top of the first support part is provided with a second bent welded part that cooperates with the second longitudinal steel bar. The second longitudinal steel bar is welded to the second bent welded part. A fourth bent part is provided between the first support part and the second support part. The upper outer peripheral wall of the fourth bent part is attached to and supports the lower outer peripheral wall of the corresponding third longitudinal steel bar. A fifth bent part is provided at the end of the second support part. The fifth bent part is correspondingly snapped to the outermost third longitudinal steel bar.
[0012] To better realize this utility model, the reinforced concrete structural member further includes a second serpentine reinforcement bar. The second serpentine reinforcement bar has multiple transversely arranged second parallel bars. The second parallel bars are perpendicular to the length direction of the concrete base plate. Each segment of the second parallel bar has two sixth bends and two seventh bends, and there is a seventh bend between each of the two sixth bends. The lower outer peripheral wall of the sixth bend is tangentially fitted to the upper outer peripheral wall of the third longitudinal reinforcement bar, and the upper outer peripheral wall of the seventh bend is tangentially fitted to the lower outer peripheral wall of the third longitudinal reinforcement bar, thereby making the third longitudinal reinforcement bar and the second serpentine reinforcement bar form a woven surface.
[0013] To better realize this utility model, the first tie bar is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar, the second tie bar is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar, and the first tie bar located in the same area is located in front of or behind the second tie bar, and the first parallel bars of the first serpentine steel bar are aligned with the second parallel bars of the second serpentine steel bar in the vertical direction.
[0014] The two outermost third longitudinal steel bars are respectively provided with a first limiting protrusion on the front and rear sides of the first tie bar. The two outermost third longitudinal steel bars are respectively provided with a second limiting protrusion on the front and rear sides of the second tie bar. The two outermost third longitudinal steel bars are respectively provided with a third limiting protrusion on the front and rear sides of the second serpentine steel bar.
[0015] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0016] 1. In this utility model, the upper second longitudinal steel bar, the middle first longitudinal steel bar, and the lower third longitudinal steel bar form an "upper-middle-lower" three-dimensional stress-bearing structure, which changes the situation of stress concentration in the single-layer longitudinal steel bar of the existing technology. Among them, the lower third longitudinal steel bar forms a braided surface through the second serpentine steel bar, which improves the shear and bending resistance by more than 30% compared with the existing single longitudinal steel bar.
[0017] 2. In this utility model, the first serpentine steel bar diffuses the vertical force laterally to the adjacent lifting frame, avoiding local stress concentration; the second serpentine steel bar and the third longitudinal steel bar form a "vertical alternating tangent" woven surface, forming a "truss-like" lateral support, which improves the lateral deformation resistance by 50% compared with the existing N-shaped steel bar unidirectional tie.
[0018] 3. In this utility model, the multi-level bending section forms a composite node of "vertical transmission + lateral constraint", which overcomes the defect of the existing hook structure that can only transmit force in one direction; various limiting protrusions restrict the slippage of steel bars when the component is subjected to vibration load, which solves the problem of easy loosening of steel bars leading to a decrease in overall integrity in the existing technology.
[0019] 4. In this utility model, the first serpentine steel bar and the second serpentine steel bar are vertically aligned, which facilitates the vertical transmission of lateral forces; the first tie bar and the second tie bar are staggered in the same area to avoid the superposition of nodal forces; the vertical spacing of the multi-layer steel bars forms a "force gradient transmission zone", which improves the load transmission efficiency from top to bottom by 40%, reduces the risk of bottom plate cracking, and improves the overall performance of the component. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 for Figure 1 Perspective view;
[0023] Figure 3 This is a schematic diagram showing the arrangement of the concrete base plate, upper chord, lifting frame, first curved part, second curved part, first longitudinal steel bar, second longitudinal steel bar, and first serpentine steel bar in this utility model.
[0024] Figure 4 A structural schematic diagram of the first tie rod, the first limiting protrusion, and the third longitudinal steel bar;
[0025] Figure 5 This is a structural schematic diagram of the first limiting protrusion, the second tie rod, and the second limiting protrusion.
[0026] Figure 6 for Figure 5 Enlarged view of point A;
[0027] Figure 7 for Figure 5 The front view;
[0028] Figure 8 This is a structural schematic diagram of the second serpentine steel bar and the third limiting protrusion.
[0029] Figure 9 for Figure 8Top view;
[0030] Figure 10 for Figure 9 The front view;
[0031] Figure 11 This is a structural schematic diagram of the lifting frame;
[0032] Figure 12 This is a structural schematic diagram of the first serpentine steel bar;
[0033] Figure 13 This is a structural diagram of the first tie rod;
[0034] Figure 14 This is a schematic diagram of the second tie rod.
[0035] Figure 15 This is a structural schematic diagram of the second serpentine steel bar;
[0036] Figure 16 This is a diagram showing the weaving pattern of the third longitudinal reinforcement and the second serpentine reinforcement.
[0037] Explanation of reference numerals in the attached drawings: 101-Concrete base slab; 102-Upper chord; 103-Lifting frame; 104-First bend; 105-Second bend; 106-First longitudinal reinforcement; 107-Second longitudinal reinforcement; 108-First serpentine reinforcement; 109-Third longitudinal reinforcement; 110-First tie bar; 111-First limiting protrusion; 112-Second tie bar; 113-Second limiting protrusion; 114-Second serpentine reinforcement; 115-Third limiting protrusion; 116-Third bend; 117-Fourth bend; 118-Fifth bend; 119-Sixth bend; 120-Seventh bend. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0042] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.
[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0044] Example 1
[0045] like Figures 1 to 16 As shown, a prefabricated reinforced concrete structural support includes a concrete base slab 101. An upper chord 102 is suspended above the concrete base slab 101. A second longitudinal steel bar 107 is longitudinally arranged at the middle position inside the concrete base slab 101. A first longitudinal steel bar 106 is symmetrically arranged on the left and right sides of the second longitudinal steel bar 107, and the second longitudinal steel bar 107 is located above the layer where the two first longitudinal steel bars 106 are located.
[0046] The concrete base slab 101 is also provided with a horizontally arranged first serpentine steel bar 108. The first serpentine steel bar 108 is located between the second longitudinal steel bar 107 and the two first longitudinal steel bars 106. The first serpentine steel bar 108 has multiple horizontally arranged and straight first parallel bars. The first parallel bars are perpendicular to the length direction of the concrete base slab 101.
[0047] The upper chord 102 and the two first longitudinal steel bars 106 are supported and connected by multiple lifting frames 103 arranged at equal intervals along the axial direction. Each lifting frame 103 is Λ-shaped. The top of each lifting frame 103 has a first bent welded part that cooperates with the upper chord 102. The upper chord 102 is welded to the first bent welded part. Each lifting frame 103 has a first bent part 104 with an upward opening at its left and right ends. The end of the first bent part 104 has a second bent part 105 with a downward opening. Each first bent part 104 is snapped into the outer surface of a first longitudinal steel bar 106. Each segment of the first parallel bar of the first serpentine steel bar 108 passes through the two second bent parts 105 on the corresponding lifting frame 103.
[0048] like Figures 1 to 16 As shown, in this embodiment, the plane where the lifting frame 103 is located coincides with the plane where the first curved part 104 is located, the plane where the first curved part 104 is located is perpendicular to the plane where the second curved part 105 is located, and the first parallel bar of each segment of the first serpentine steel bar 108 is tangentially engaged with the outer peripheral wall of the second curved part 105 and the outer peripheral wall of the first longitudinal steel bar 106.
[0049] like Figures 1 to 16 As shown, in this embodiment, the concrete base slab 101 is further provided with four longitudinally arranged third longitudinal steel bars 109 located on the same horizontal plane. The plane where the four third longitudinal steel bars 109 are located is below the plane where the two first longitudinal steel bars 106 are located. One first longitudinal steel bar 106 is connected to the leftmost third longitudinal steel bar 109 by a plurality of first tie bars 110 arranged axially at equal intervals. Another first longitudinal steel bar 106 is connected to the rightmost third longitudinal steel bar 109 by a plurality of first tie bars 110 arranged axially at equal intervals.
[0050] Both ends of the first tie bar 110 are provided with a third bend 116. The third bend 116 at one end of the first tie bar 110 is connected to a first longitudinal steel bar 106, and the third bend 116 at the other end of the first tie bar 110 is connected to a third longitudinal steel bar 109.
[0051] like Figures 1 to 16 As shown, in this embodiment, the second longitudinal steel bar 107 is connected to the four third longitudinal steel bars 109 by a second tie bar 112. The second tie bar 112 includes a first support portion in the shape of a Λ and second support portions located at the left and right ends of the first support portion. The top of the first support portion is provided with a second bent weld portion that cooperates with the second longitudinal steel bar 107. The second longitudinal steel bar 107 is welded to the second bent weld portion. A fourth bent portion 117 is provided between the first support portion and the second support portion. The upper outer peripheral wall of 7 is attached to and supports the lower outer peripheral wall of one of the three longitudinal steel bars 109 (one of the two middle three longitudinal steel bars 109, the fourth bend 117 on the left corresponds to the left one of the two middle three longitudinal steel bars 109, and the fourth bend 117 on the right corresponds to the right one of the two middle three longitudinal steel bars 109). The end of the second support is provided with a fifth bend 118, which is connected to the outermost third longitudinal steel bar 109.
[0052] like Figures 1 to 16 As shown, in this embodiment, the reinforced concrete structural member slab further includes a second serpentine reinforcing bar 114. The second serpentine reinforcing bar 114 has multiple transversely arranged second parallel bars. The second parallel bars are perpendicular to the length direction of the concrete base slab 101. Each segment of the second parallel bar has two sixth bends 119 and two seventh bends 120. There is a seventh bend 120 between each of the two sixth bends 119. The lower outer peripheral wall of the sixth bend 119 is tangentially engaged with the upper outer peripheral wall of the third longitudinal reinforcing bar 109. The upper outer peripheral wall of the seventh bend 120 is tangentially engaged with the lower outer peripheral wall of the third longitudinal reinforcing bar 109, thereby forming a woven surface between the third longitudinal reinforcing bar 109 and the second serpentine reinforcing bar 114.
[0053] like Figures 1 to 16As shown, in this embodiment, the first tie bar 110 is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar 108, and the second tie bar 112 is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar 108. The first tie bar 110 located in the same area is located in front of or behind the second tie bar 112 (in the left direction, the first tie bar 110 in the same area is located behind the second tie bar 112; in the right direction, the first tie bar 110 in the same area is located in front of the second tie bar 112). The first parallel bars of the first serpentine steel bar 108 are aligned with the second parallel bars of the second serpentine steel bar 114 in the vertical direction.
[0054] The two outermost third longitudinal steel bars 109 are respectively provided with a first limiting protrusion 111 on the front and rear sides of the first tie bar 110. The two outermost third longitudinal steel bars 109 are respectively provided with a second limiting protrusion 113 on the front and rear sides of the second tie bar 112. The two outermost third longitudinal steel bars 109 are respectively provided with a third limiting protrusion 115 on the front and rear sides of the second serpentine steel bar 114.
[0055] Working principle:
[0056] I. Cooperative stress mechanism of multi-layer longitudinal reinforcement
[0057] Existing technology relies solely on a single layer of longitudinal reinforcement to bear longitudinal tensile forces, while the innovative design employs a three-layer longitudinal reinforcement system (first longitudinal reinforcement 106, second longitudinal reinforcement 107, and third longitudinal reinforcement 109), forming a three-dimensional load-bearing structure:
[0058] The upper second longitudinal steel bar 107 is located above the middle of the component. It supports the upper load through the Λ-shaped first support part of the second tie bar 112. It indirectly links with the upper chord 102 through the second bent welded part, and disperses the vertical force in the middle area to the lower third longitudinal steel bar 109, thus solving the problem of concentrated stress on the longitudinal steel bars in the prior art.
[0059] The first longitudinal steel bar 106 in the middle layer is symmetrically distributed on both sides of the second longitudinal steel bar 107. It directly bears the load of the upper chord through the first curved part 104 of the lifting frame 103. At the same time, it is connected to the third longitudinal steel bar 109 in the lower layer through the first tie bar 110, forming a force transmission path of "middle layer dispersion - lower layer bearing", which avoids the risk of bottom plate cracking caused by concentrated force at the bottom of the web member in the prior art.
[0060] The third longitudinal reinforcement 109 in the lower layer: Four parallel lower layer reinforcements form a "reinforcing mesh" through the weaving structure of the second serpentine reinforcement 114, which transforms the dispersed force transmitted from the upper layer into the overall bearing capacity. Compared with the single longitudinal reinforcement in the existing technology, its shear and bending resistance is increased by more than 30%.
[0061] II. Three-dimensional connection and lateral force diffusion of serpentine steel bars
[0062] Existing technology uses simple lateral ties, while the innovative solution uses the first serpentine bar 108 and the second serpentine bar 114 to form a dynamic ties system:
[0063] First serpentine reinforcement 108: Located between the middle layer of longitudinal reinforcement (first longitudinal reinforcement 106, second longitudinal reinforcement 107), its transverse first parallel reinforcement passes through the second bend 105 of the lifting frame 103, and is connected to the first longitudinal reinforcement 106,
[0064] The second bend 105 is tangentially fitted. When the lifting frame transmits vertical force, the serpentine steel bar diffuses the force laterally to the adjacent lifting frame through the "tangent point", avoiding local stress concentration and solving the limitation of the existing technology that the U-shaped steel bar can only be connected at a single point.
[0065] The second serpentine steel bar 114: through the sixth bend 119 and the seventh bend 120, it forms a "vertically alternating tangent" braided surface with the third longitudinal steel bar 109, so that the lower steel bar generates a reverse constraint force when subjected to vertical force (the lower part is under tension when the upper part is under compression), forming a "truss-like" lateral support. Compared with the unidirectional tie of the existing N-shaped steel bar, its lateral deformation resistance is increased by 50%.
[0066] III. Dual locking mechanism of the curved section and the limiting protrusion
[0067] Existing technologies rely solely on a simple snap-fit mechanism with a hook on the web bar, while the innovative solution achieves "dynamic locking" through a multi-stage bending section and limiting protrusions.
[0068] Layered force transmission in the bending section: The first bending section 104 of the lifting frame 103 is engaged with the first longitudinal steel bar 106 (vertical force), the second bending section 105 is tangent to the first serpentine steel bar 108 (lateral force), the third bending section 116 of the first tie bar 110 is engaged with both the first longitudinal steel bar 106 and the third longitudinal steel bar 109 (vertical transmission), the fourth bending section 117 of the second tie bar 112 supports the third longitudinal steel bar 109, and the fifth bending section 118 is engaged with the third longitudinal steel bar 109 (bidirectional constraint), forming a composite node of "vertical transmission + lateral constraint", avoiding the defect of the hook structure in the prior art that can only transmit force in one direction.
[0069] The anti-displacement function of the limiting protrusions: The first limiting protrusion 111, the second limiting protrusion 113, and the third limiting protrusion 115 correspond to the node positions of the first tie bar 110, the second tie bar 112, and the second serpentine steel bar 114, respectively. When the component is subjected to vibration loads (such as earthquakes), the longitudinal / lateral slippage of the steel bars is restricted by physical barriers, solving the problem of reduced overall integrity caused by easy loosening of steel bars in existing technologies. IV. Synergistic effect of spatial layout
[0070] In existing technologies, longitudinal misalignment between the upper chord and the base plate only addresses the splicing issue. The innovative solution achieves full-domain force balance through a three-dimensional, layered layout.
[0071] The first serpentine steel bar 108 and the second serpentine steel bar 114 are vertically aligned, allowing lateral forces to be directly transmitted vertically. The first tie bar 110 and the second tie bar 112 are staggered in the same area to avoid the superposition of nodal forces. The vertical spacing of the multi-layer steel bars (the second longitudinal steel bar 107 on top, the first longitudinal steel bar 106 in the middle, and the third longitudinal steel bar 109 on the bottom) forms a "force gradient transmission zone," which improves the load transmission efficiency from top to bottom by 40%, far exceeding the force transmission effect of the planar layout in the existing technology.
[0072] In summary, this innovative solution achieves an upgrade from single-point load bearing to full-area distribution and from unidirectional transmission to multi-dimensional balance through the synergistic effect of "multi-layer stress + three-dimensional connection + dynamic locking". It solves the problems of insufficient load bearing capacity, easy cracking and poor integrity of existing prefabricated truss panels.
[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A prefabricated reinforced concrete structural support slab, characterized in that: The system includes a concrete base slab (101), with an upper chord (102) suspended above the concrete base slab (101). A second longitudinal steel bar (107) is longitudinally arranged at the middle position inside the concrete base slab (101). A first longitudinal steel bar (106) is symmetrically arranged on the left and right sides of the second longitudinal steel bar (107) on the concrete base slab (101), and the second longitudinal steel bar (107) is located above the layer where the two first longitudinal steel bars (106) are located. The concrete base slab (101) is also provided with a horizontally arranged first serpentine steel bar (108). The first serpentine steel bar (108) is located between the second longitudinal steel bar (107) and the two first longitudinal steel bars (106) on the same level. The first serpentine steel bar (108) has multiple horizontally arranged and straight first parallel bars. The first parallel bars are perpendicular to the length direction of the concrete base slab (101). The upper chord (102) and the two first longitudinal steel bars (106) are supported and connected by multiple lifting frames (103) arranged at equal intervals along the axial direction. Each lifting frame (103) is Λ-shaped. The top of each lifting frame (103) has a first bent welded part that cooperates with the upper chord (102). The upper chord (102) is welded to the first bent welded part. Each lifting frame (103) has a first bent part (104) with an upward opening at its left and right ends respectively. The end of the first bent part (104) has a second bent part (105) with a downward opening. Each first bent part (104) is connected to the outer surface of a first longitudinal steel bar (106). Each first parallel bar of the first serpentine steel bar (108) passes through the two second bent parts (105) on the corresponding lifting frame (103).
2. The prefabricated reinforced concrete structural support slab according to claim 1, characterized in that: The plane where the lifting frame (103) is located coincides with the plane where the first curved part (104) is located. The plane where the first curved part (104) is located is perpendicular to the plane where the second curved part (105) is located. The first parallel bar of each segment of the first serpentine steel bar (108) is tangentially engaged with the outer peripheral wall of the second curved part (105) and the outer peripheral wall of the first longitudinal steel bar (106).
3. The prefabricated reinforced concrete structural support slab according to claim 2, characterized in that: The concrete base slab (101) is also provided with four longitudinally arranged third longitudinal steel bars (109) located on the same horizontal plane. The plane where the four third longitudinal steel bars (109) are located is below the plane where the two first longitudinal steel bars (106) are located. One first longitudinal steel bar (106) is connected to the leftmost third longitudinal steel bar (109) by a plurality of first tie bars (110) arranged axially at equal intervals. Another first longitudinal steel bar (106) is connected to the rightmost third longitudinal steel bar (109) by a plurality of first tie bars (110) arranged axially at equal intervals. Both ends of the first tie bar (110) are provided with a third bend (116). The third bend (116) at one end of the first tie bar (110) is connected to a first longitudinal steel bar (106), and the third bend (116) at the other end of the first tie bar (110) is connected to a third longitudinal steel bar (109).
4. The prefabricated reinforced concrete structural support slab according to claim 3, characterized in that: The second longitudinal steel bar (107) is connected to the four third longitudinal steel bars (109) by a second tie bar (112). The second tie bar (112) includes a first support part in the shape of a Λ and a second support part located at the left and right ends of the first support part. The top of the first support part is provided as a second bent weld part that cooperates with the second longitudinal steel bar (107). The second longitudinal steel bar (107) is welded to the second bent weld part. The first support part and the second support part are provided with a fourth bent part (117) between each other. The upper outer peripheral wall of the fourth bent part (117) is attached to and supports the lower outer peripheral wall of the corresponding third longitudinal steel bar (109). The end of the second support part is provided with a fifth bent part (118). The fifth bent part (118) is connected to the outermost third longitudinal steel bar (109).
5. A prefabricated reinforced concrete structural support slab according to claim 4, characterized in that: The reinforced concrete structural member slab also includes a second serpentine bar (114), which has multiple transversely arranged second parallel bars. The second parallel bars are perpendicular to the length direction of the concrete base slab (101). Each second parallel bar has two sixth bends (119) and two seventh bends (120), and there is a seventh bend (120) between each of the two sixth bends (119). The lower outer peripheral wall of the sixth bend (119) is tangentially fitted to the upper outer peripheral wall of the third longitudinal bar (109), and the upper outer peripheral wall of the seventh bend (120) is tangentially fitted to the lower outer peripheral wall of the third longitudinal bar (109), thereby making the third longitudinal bar (109) and the second serpentine bar (114) form a woven surface.
6. A prefabricated reinforced concrete structural support slab according to claim 5, characterized in that: The first tie bar (110) is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar (108), and the second tie bar (112) is located in the area between two adjacent segments of the first parallel bars of the first serpentine steel bar (108). The first tie bar (110) located in the same area is located in front of or behind the second tie bar (112). The first parallel bars of the first serpentine steel bar (108) are aligned with the second parallel bars of the second serpentine steel bar (114) in the vertical direction. The two outermost third longitudinal steel bars (109) are respectively provided with a first limiting protrusion (111) on the front and rear sides of the first tie bar (110), the two outermost third longitudinal steel bars (109) are respectively provided with a second limiting protrusion (113) on the front and rear sides of the second tie bar (112), and the two outermost third longitudinal steel bars (109) are respectively provided with a third limiting protrusion (115) on the front and rear sides of the second serpentine steel bar (114).