Precast concrete member and building structure

Abstract

The utility model provides a prefabricated concrete member and a building structure. The precast concrete member comprises a body provided with a groove extending in the height direction; the first fixing piece and the second fixing piece are fixedly arranged on the two opposite side walls of the groove and / or the two opposite end faces of the opening part of the groove; the connecting steel bar is connected with the first fixing piece and the second fixing piece, and the connecting steel bar can move in the groove so as to be arranged in the groove in an inclined state or a horizontal state. According to the precast concrete member provided by the invention, the tie bar in the groove is replaced by the first fixing piece and the second fixing piece which are arranged on the two opposite side walls of the groove and / or the two opposite end faces of the opening part of the groove, so that the same effect as that of the tie bar can be achieved, and the structure and the precast method of a precast template are simplified.

Description

Technical Field

[0001] This application relates to the field of building technology, specifically to a precast concrete component and building structure. Background Technology

[0002] The construction of precast components in precast concrete structures has a significant impact on the efficiency and effectiveness of the structure. The performance of horizontal and vertical joints between precast components determines the overall performance of the structure, and the reinforcement connection at the joints is a key technology for precast monolithic structures. In existing technologies, there are generally two methods for connecting the reinforcement between precast components on the same floor in precast monolithic structures such as precast monolithic shear walls. One method involves extending connecting reinforcement bars from the side of the precast component and connecting them via post-cast strips, resulting in low efficiency and poor effectiveness in manufacturing, transportation, and installation. The other method is for composite slab shear walls, where although the precast components do not have reinforcement bars, post-cast strips are used at the joints, making construction more complex.

[0003] The close-joint connection technology without post-pouring strips at the joints between precast components has advantages such as high efficiency and convenient construction. However, how to set the connecting steel bars is a key technology.

[0004] Patent CN 202111354702.6 discloses a precast concrete component. The component has a longitudinal groove on its side, within which a connecting steel bar is accommodated. The connecting steel bar is movable, thereby achieving a close-fitting steel bar connection. Supporting steel bars are disposed within the groove to support the connecting steel bar. Both ends of the supporting steel bars are located within the concrete slabs on either side of the groove. This achieves a close-fitting steel bar connection.

[0005] The Beijing local standard "Code for Design of Prefabricated Shear Wall Structures" (DB11-1003-2022) discloses a hollow slab composite shear wall structure, in which open channels (i.e., longitudinal grooves) are set at the ends of the non-edge hollow wall panels, and tie rods are set in the channels; the tie rods are the key structure to ensure the reliability of the vertical connection between the wall panels.

[0006] In addition, longitudinal grooves and tie bars are provided on the sides of some precast concrete components such as precast floor slabs and precast tower sections of wind turbine towers.

[0007] The fabrication of the aforementioned precast concrete components with longitudinal grooves and tie bars on the sides is complex due to the supporting steel bars or tie bars, which complicates the formwork construction for the longitudinal grooves, making formwork installation and disassembly difficult, reducing production efficiency, and affecting the quality of the finished precast wall panels. For example, patent CN202211313106.8 discloses a precast formwork suitable for shear walls with side grooves. The longitudinal beam (i.e., the mold inside the groove) includes an inner module and an outer module. The inner module includes two wedge-shaped blocks distributed vertically and capable of being fitted together to form a rectangular strip. The outer module has mounting grooves for engaging the tie bars connecting the concrete slabs on both sides of the groove. It is evident that the construction and operation of precast formwork with tie bars and longitudinal grooves are complex. Utility Model Content

[0008] This application provides a precast concrete component in which tie rods are replaced with fasteners, thereby simplifying the formwork and fabrication of the grooved precast concrete component.

[0009] This application provides a precast concrete component comprising:

[0010] The body has a groove extending along the height direction;

[0011] The first fixing member and the second fixing member are fixedly disposed on the opposite side walls of the groove and / or the opposite end faces of the opening of the groove;

[0012] A connecting steel bar is connected to the first fixing member and the second fixing member, wherein the connecting steel bar is movable within the groove, thereby being arranged in the groove in an inclined or horizontal state.

[0013] In some embodiments of this application, the first fastener and the second fastener are respectively steel bar buckles.

[0014] In some embodiments of this application, one end of the rebar clip has an opening.

[0015] In some embodiments of this application, the opposite side walls of the groove are toothed structures.

[0016] In some embodiments of this application, the connecting steel bars are U-shaped steel bars and / or ring steel bars.

[0017] In some embodiments of this application, the opposite ends of the U-shaped steel bar and / or the annular steel bar are connected by transverse bars.

[0018] In some embodiments of this application, the precast concrete member further includes longitudinal reinforcement connected to the transverse reinforcement, and / or the longitudinal reinforcement is connected to the end of the annular reinforcement away from the opening of the groove.

[0019] In some embodiments of this application, the precast concrete component further includes tie bars, which are connected to the first fixing member and the second fixing member.

[0020] In some embodiments of this application, the groove is disposed on the end face and / or in the middle of the body; wherein

[0021] The body is in the shape of a straight line, a T-shape, or an L-shape; and / or

[0022] The groove is U-shaped or L-shaped.

[0023] This application also provides a building structure comprising any of the precast concrete components described above.

[0024] The precast concrete component provided in this application replaces the tie bars in the groove of the prior art with a combination of a first fixing member, a second fixing member, and connecting steel bars. The first and second fixing members have a small length extending out of the side wall of the groove, the formwork structure is relatively simple, and the manufacturing is convenient. After the precast component is manufactured, the connecting steel bars are installed and combined with the fixing members to form a tie bar structure. This not only serves the function of the tie bars in the prior art (the tie bars connect the concrete slabs on both sides of the groove), but also simplifies the formwork structure and manufacturing process of the precast component, improving the efficiency and benefits of the precast concrete structure.

[0025] Furthermore, the connecting reinforcing bars can move using the fixing components, allowing them to be housed within the longitudinal grooves during transportation and hoisting, saving space and preventing collisions. During construction, the connecting reinforcing bars only need to be adjusted to a horizontal position to connect with other connecting components, simplifying the process. Therefore, this application, by decomposing the key components of precast concrete structures into easily prefabricated parts (i.e., fixing components) and post-installation parts (i.e., connecting reinforcing bars), combines the technical advantages of precast components disclosed in patent CN202111354702.6 with simplified manufacturing, further enhancing the efficiency and benefits of precast concrete structures. Attached Figure Description

[0026] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0027] Figure 1 A precast concrete component provided in one embodiment of this application is shown.

[0028] Figure 2-3 A precast concrete component provided in another embodiment of this application is shown, wherein Figure 2 It is a 3D image. Figure 3 This is the left view.

[0029] Figure 4-5This application illustrates a precast concrete component according to yet another embodiment, wherein... Figure 4 It is a 3D image. Figure 5 This is the left view.

[0030] Figure 6 A precast concrete component provided in yet another embodiment of this application is shown.

[0031] Figure 7 A precast concrete component provided in yet another embodiment of this application is shown.

[0032] Figure 8-9 This application illustrates a precast concrete component according to yet another embodiment, wherein... Figure 8 The connecting steel bars are inclined. Figure 9 The connecting steel bars are horizontal.

[0033] Figure 10-11 This application illustrates a precast concrete component according to yet another embodiment, wherein... Figure 10 The connecting steel bars are inclined. Figure 11 The connecting steel bars are horizontal.

[0034] Figure 12 A precast concrete component provided in yet another embodiment of this application is shown.

[0035] Figure 13 A precast concrete component provided in yet another embodiment of this application is shown.

[0036] Figure 14 A precast concrete component provided in yet another embodiment of this application is shown.

[0037] Figure 15 A precast concrete component provided in yet another embodiment of this application is shown.

[0038] Figure 16 A precast concrete component provided in yet another embodiment of this application is shown.

[0039] Figure 17 A precast concrete component provided in yet another embodiment of this application is shown. Detailed Implementation

[0040] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0041] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and installations are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or installations discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] It should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. Furthermore, in the accompanying drawings, the thickness, proportions, and dimensions of the components have been exaggerated or reduced for the purpose of effectively describing the technical content.

[0043] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings and examples, so as to better understand the solution of this application and its advantages in various aspects. However, the specific embodiments and examples described below are for illustrative purposes only and are not intended to limit this application.

[0044] Figure 1 A precast concrete component 100 provided in one embodiment of this application is shown, which includes a body 110, a fastener 120 and a connecting steel bar 130.

[0045] The main body 110 has grooves 111 extending along the height direction (i.e., the longitudinal direction in the figure) on both sides, wherein the grooves 111 are through grooves. Of course, the grooves 111 can also be non-through grooves. The grooves 111 have opposite side walls 111a and 111b.

[0046] The fastener 120 includes a first fastener 121 and a second fastener 122, which are fixedly disposed on opposite side walls 111a and 111b. In this embodiment, the first fastener 121 and the second fastener 122 are respectively closed rebar clips (i.e., without openings) extending from the body 110. In other embodiments of this application, the first fastener 121 and the second fastener 122 may also be structures such as rebar rings. The minimum dimension of the fastener extending out of the side wall meets the requirements for setting connecting rebars.

[0047] The connecting steel bar 130 is connected to the first fixing member 121 and the second fixing member 122. The connecting steel bar 130 can move within the groove 111, so that it can be set in the groove 111 in an inclined state or a horizontal state, and can also be transformed into being concealed within the groove 111 or having one end protruding from the groove 111. Figure 1 In the middle, the connecting steel bar 130 is a U-shaped steel bar, and the two ends of the U-shaped steel bar are respectively inserted into the first fixing member 121 and the second fixing member 122. Figure 1 In this embodiment, the connecting steel bar 130 is in a horizontal state. It can be moved forward and backward or up and down to change its horizontal state to an inclined state. During transportation, the U-shaped steel bar can also be removed from the first fixing member 121 and the second fixing member 122 and reinserted during on-site assembly. In other embodiments of this application, the connecting steel bar 130 can also be a ring-shaped steel bar. The ring-shaped steel bar described in this application can be a closed structure of circle, square, rectangle, or other polygons.

[0048] Figure 2 and Figure 3 A precast concrete component 200 according to another embodiment of this application is shown. The connecting steel bars are omitted in order to better show the structure of the fastener 220.

[0049] Figure 2 and Figure 3 The illustrated embodiments and Figure 1 The difference in the illustrated embodiment is that the fastener 220 is provided on the two opposite end faces 211c and 211d of the opening of the groove 211.

[0050] Figure 4 and Figure 5 A precast concrete component 300 according to another embodiment of this application is shown, similar to Figure 2 and Figure 3 To better show the structure of the fastener, the connecting steel bars have been omitted.

[0051] Figure 4 and Figure 5 The illustrated embodiments and Figure 1 The difference in the illustrated embodiment is that both the first fixing member 321 and the second fixing member 322 have an opening at one end, and the other end is fixed to the opposite side walls 311a and 311b. Having an opening is more advantageous for setting up connecting reinforcing bars, especially when the connecting reinforcing bars are ring-shaped reinforcing bars. In this application, the opening cannot be too large; the opening size can be slightly larger than the diameter of the connecting reinforcing bar, for example, 1-5 mm larger, to prevent the connecting reinforcing bar from separating from the fixing member; the opening size can also be slightly smaller than the diameter of the connecting reinforcing bar, for example, 1-5 mm smaller, utilizing the elasticity of the fixing member opening to set up the connecting reinforcing bar.

[0052] Figure 6 and Figure 7 Two other embodiments of this application provide precast concrete components 400 and 500, which are similar. Figure 2 and Figure 3 To better show the structure of the fastener, the connecting steel bars have been omitted.

[0053] Figure 6 and Figure 7 The illustrated embodiments and Figure 1 The difference in the embodiment shown is that the first fixing member and the second fixing member are connected by a tie rod. Figure 6 The two ends of the central tie rod 440 are respectively connected to the middle parts of the first fixing member 421 and the second fixing member 422. Figure 7 The two ends of the tie rod 540 are connected to the lower ends of the first fixing member 521 and the second fixing member 522, respectively. The tie rods 440 and 540 can be connected to the first fixing member 421, 521 and the second fixing member 422, 522 by binding, welding or other means. Figure 6 and Figure 7 The precast concrete components 400 and 500 shown have added tie rods 440 and 540, which helps to improve the bond strength between the cast-in-place concrete and the precast concrete component. This structure allows for easier fabrication by installing tie rods 440 and 540 after the precast component is manufactured.

[0054] Figure 8 and Figure 9 A precast concrete component 600 according to another embodiment of this application is shown. Figure 8 The central connecting steel bar 630 is inclined. Figure 9 The 630 connecting steel bar is in a horizontal position.

[0055] In this embodiment, the connecting reinforcing bar 630 is a rectangular ring-shaped reinforcing bar, and the two opposite ends of the ring-shaped reinforcing bar are connected by transverse reinforcing bars 631. When the transverse reinforcing bars 631 move to contact the fixing member, they can limit the movement distance of the connecting reinforcing bar 630 and limit the tilt angle of the connecting reinforcing bar 630, thereby realizing the positioning of the connecting reinforcing bar 630; moreover, when the transverse reinforcing bars 631 contact the fixing member, they can improve the bonding force between the precast concrete components after the concrete is cast in place by connecting the two side walls of the groove of the fixing member.

[0056] Figure 10 and Figure 11 A precast concrete component 700 according to another embodiment of this application is shown. Figure 10 The central connecting steel bar 730 is inclined. Figure 11 The connecting steel bar 730 is horizontal. The difference between precast concrete component 700 and precast concrete component 600 lies in the position of the horizontal bars 631 and 731.

[0057] Figure 12A precast concrete component 800 according to another embodiment of this application is shown. It differs from the precast concrete component 700 in that a longitudinal reinforcement 832 is connected to the end of the connecting steel bar 830 away from the opening of the groove 811. The presence of the longitudinal reinforcement 832 facilitates the movement of the connecting steel bar 830, thereby changing its state. In other embodiments of this application, the longitudinal reinforcement may also be connected to the aforementioned transverse reinforcement. When the connecting steel bar is a U-shaped steel bar, the longitudinal reinforcement may be connected to both ends of the U-shaped steel bar. When the U-shaped steel bar also has transverse reinforcement, the longitudinal reinforcement may also be connected to the transverse reinforcement of the U-shaped steel bar.

[0058] Figure 13 A precast concrete component 900 according to another embodiment of this application is shown. It is similar to... Figure 1 The difference between the precast concrete member 100 shown lies in the shape of the opposite side walls of the groove. In the precast concrete member 900, the opposite side walls of the groove have a toothed structure. In other embodiments of this application, the opposite side walls of the groove may also have other shapes.

[0059] Figure 14-16 Two other embodiments of this application provide precast concrete components 1000, 1100, and 1200, which are similar. Figure 2 and Figure 3 The connecting steel bars were omitted. It is related to... Figure 1 The differences between the precast concrete components 100 shown lie in the position and shape of the groove. In precast concrete component 1000, the groove is located in the middle of the body. In precast concrete component 1100, the groove is located on the end face of the body, but the opening direction is perpendicular to the opening direction of the groove in precast concrete component 100. In precast concrete component 1200, the groove is L-shaped. In this application, the groove can be located on the end face and / or in the middle of the body. In this application, the cross-section of the groove can be U-shaped, L-shaped, or trapezoidal, and of course, it can also be other shapes.

[0060] Figure 17 Another embodiment of the precast concrete component 1300 provided in this application is shown, similar to Figure 2 and Figure 3 The connecting steel bars were omitted. It is related to... Figure 1 The difference between the precast concrete component 100 shown lies in the shape of its body. The body of the precast concrete component 1300 is generally T-shaped. In this application, the body can be straight, T-shaped, or L-shaped.

[0061] This application further provides a building structure that may include any of the aforementioned precast concrete components or any combination thereof.

[0062] The precast concrete component provided in this application replaces the tie rod in the groove with a first and a second fixing member set on the opposite side walls of the groove and / or the opposite end faces of the groove opening. This not only achieves the same function as the tie rod, but also simplifies the structure of the precast template and the precasting method.

[0063] Obviously, the above embodiments are merely examples for clearly illustrating this application and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A precast concrete component, characterized in that, include: The body has a groove extending along the height direction; The first fixing member and the second fixing member are fixedly disposed on opposite side walls of the groove and / or opposite end faces of the opening of the groove; wherein, the first fixing member and the second fixing member are steel bar clips; A connecting steel bar is connected to the first fixing member and the second fixing member, wherein the connecting steel bar is movable within the groove, thereby being arranged in the groove in an inclined or horizontal state.

2. The precast concrete component according to claim 1, characterized in that, One end of the steel bar buckle has an opening.

3. The precast concrete component according to claim 1, characterized in that, The opposite side walls of the groove have a toothed structure.

4. The precast concrete component according to claim 1, characterized in that, The connecting steel bars are U-shaped steel bars and / or ring steel bars.

5. The precast concrete component according to claim 4, characterized in that, The opposite ends of the U-shaped steel bar and / or the ring steel bar are connected by transverse bars.

6. The precast concrete component according to claim 5, characterized in that, It also includes longitudinal reinforcement, which is connected to the transverse reinforcement, and / or the longitudinal reinforcement is connected to the end of the annular reinforcement away from the opening of the groove.

7. The precast concrete component according to claim 1, characterized in that, It also includes a tie rod, which is connected to the first fixing member and the second fixing member.

8. The precast concrete component according to claim 1, characterized in that, The groove is provided on the end face and / or in the middle of the body; wherein The body is in the shape of a straight line, a T-shape, or an L-shape; and / or The groove is U-shaped or L-shaped.

9. A building structure, characterized in that, Includes the precast concrete components described in any one of claims 1 to 8.

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