Prefabricated concrete components, prefabricated concrete assemblies and their splicing methods

Abstract

The present invention provides a precast concrete component, a precast concrete assembly and a splicing method thereof. Among them, the precast concrete component includes a connection end, and the connection end includes a receiving portion and connection steel bars received in the receiving portion; the receiving portion includes a transverse hole, or a transverse hole and a longitudinal hole communicating with each other, the opening of the transverse hole is arranged on the connection end face of the connection end, and the opening of the longitudinal hole is arranged on the top face of the connection end; the connection steel bars include a first side close to the connection end face; wherein, the connection steel bars can move in the receiving portion so as to be arranged in the receiving portion in an inclined state or a horizontal state, and when the connection steel bars are arranged in the receiving portion in a horizontal state, the first side extends out of the connection end face. The precast concrete component of the present invention has a simple structure and is very convenient for construction.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly to a precast concrete member, a precast concrete component and a splicing method thereof. Background Art

[0002] To improve the problems of slow construction speed and messy construction site caused by the traditional construction method of first tying steel bars and then casting concrete, the construction industry has implemented an assembled construction method.

[0003] The structure of precast members in precast concrete structures determines the efficiency and benefits of the structure, and the performance of horizontal joints and vertical joints between precast members determines the overall performance of the structure. The key technology for the assembled monolithic structure of the steel bar connection at the joints between precast concrete members. In the prior art, generally there are two technical solutions: one is to extend connecting steel bars on precast members, with low production, transportation and installation efficiency and poor benefits; the other technical solution is the composite slab shear wall. Although the precast members do not have protruding steel bars, a post-cast strip is set at the joint, and the construction is relatively complicated.

[0004] The use of a closely-fitted joint connection technology at the joints between precast members is highly efficient and convenient for construction, but how to set the connecting steel bars is the key technology. The prior art does not have a good solution for this, and it is very complicated, time-consuming and laborious during construction. Summary of the Invention

[0005] To solve one of the above problems in the prior art, the first object of the present invention is to provide a precast concrete member. It includes a connection end, and the connection end includes a receiving portion and a connecting steel bar received in the receiving portion;

[0006] The receiving portion includes a transverse hole, or a transverse hole and a longitudinal hole communicating with each other. The opening of the transverse hole is provided on the connection end face of the connection end, and the opening of the longitudinal hole is provided on the top surface of the connection end. The connecting steel bar includes a first side close to the connection end face;

[0007] Wherein, the connecting steel bar can move in the receiving portion so as to be arranged in the receiving portion in an inclined state or a horizontal state. When the connecting steel bar is arranged in the receiving portion in a horizontal state, the first side extends out of the connection end face.

[0008] In some embodiments of the present invention, the precast concrete member further includes a first longitudinal bar, and the first longitudinal bar is located outside the connection end face.

[0009] In some embodiments of the present invention, the first longitudinal bar is connected to the first side, and the first longitudinal bar can move so that the connecting steel bar is arranged in the receiving portion in an inclined state or a horizontal state;

[0010] Wherein, in the inclined state, the first longitudinal reinforcement contacts the connection end face;

[0011] In the horizontal state, the first longitudinal reinforcement is away from the connection end face.

[0012] In some embodiments of the present invention, the precast concrete member further includes a second longitudinal reinforcement, the second longitudinal reinforcement is arranged in the longitudinal hole along the length direction of the longitudinal hole, the connecting reinforcement further includes a second side away from the connection end face, the connecting reinforcement is connected to the second longitudinal reinforcement, and the second side can move up and down along the length direction of the second longitudinal reinforcement, so that the connecting reinforcement is arranged in the accommodating part in an inclined state or a horizontal state.

[0013] In some embodiments of the present invention, a first limiting member is arranged on the second longitudinal reinforcement. When the second side moves to the first limiting member, the connecting reinforcement is arranged in the accommodating part in a horizontal state.

[0014] In some embodiments of the present invention, the precast concrete member further includes a third longitudinal reinforcement, the third longitudinal reinforcement is arranged in the longitudinal hole along the length direction of the longitudinal hole, the connecting reinforcement further includes a second side away from the connection end face, the third longitudinal reinforcement is connected to the second side, and the third longitudinal reinforcement can move up and down, so that the connecting reinforcement is arranged in the accommodating part in an inclined state or a horizontal state.

[0015] In some embodiments of the present invention, a second limiting member is arranged on the third longitudinal reinforcement.

[0016] In some embodiments of the present invention, the connecting reinforcement further includes a second side away from the connection end face, the second side includes a sliding part, a chute is arranged on the bottom surface of the transverse hole or the length direction of the longitudinal hole, and the sliding part is slidably arranged in the chute, so that the connecting reinforcement is arranged in the accommodating part in an inclined state or a horizontal state.

[0017] In some embodiments of the present invention, a third limiting member is arranged in the chute. When the second side slides to the third limiting member, the connecting reinforcement is arranged in the accommodating part in a horizontal state.

[0018] The second object of the present invention is to provide a precast concrete assembly, which includes the above-mentioned precast concrete member.

[0019] In some embodiments of the present invention, the precast concrete assembly further includes a precast concrete splicing member that matches the precast concrete member.

[0020] In some embodiments of the present invention, the precast concrete splicing member includes splicing holes, and the sum of the depth of the splicing holes and the depth of the transverse holes is greater than the length of the connecting steel bars.

[0021] The third object of the present invention is to provide a splicing method for the above-mentioned precast concrete components, including:

[0022] Adjust the connecting steel bars of the precast concrete member from an inclined state to a horizontal state, so that the first side of the connecting steel bars extends into the connecting member;

[0023] Pour concrete into the accommodating part to fixedly connect the precast concrete member and the connecting member together.

[0024] The fourth object of the present invention is to provide another splicing method for the above-mentioned precast concrete components, including:

[0025] Set the connecting end face of the precast concrete member opposite to the splicing end face of the precast concrete splicing member;

[0026] Adjust the connecting steel bars of the precast concrete member from an inclined state to a horizontal state, so that the first side of the connecting steel bars extends into the splicing holes; and

[0027] Pour concrete into the accommodating part of the precast concrete member and the splicing holes of the precast concrete splicing member to fixedly connect the precast concrete member and the precast concrete splicing member together.

[0028] The precast concrete member of the present invention has a simple structure. The connecting steel bars are installed in the accommodating part after the precast concrete member is manufactured, which does not interfere with the manufacture of the precast concrete member, and the connecting steel bars do not need to be installed on the construction site, reducing the on-site workload. During transportation and hoisting, the connecting steel bars are accommodated in the accommodating part, which does not occupy space and will not be collided; during construction, only the connecting steel bars need to be adjusted to a horizontal state to be connected to other connecting members, and the process is simple. In the manufacturing, transportation and other stages of the present invention, the connecting steel bars are inclined in the accommodating part, greatly reducing the space of the accommodating part, such as reducing the depth of the transverse holes, thereby reducing the opening rate of the precast concrete member and further reducing the amount of post-cast concrete.

[0029] The connecting steel bars of the present invention tend to adjust to the horizontal state under their own weight when in an inclined state, enabling the connecting steel bars to adjust from the inclined state to the horizontal state with a certain degree of automatism. That is, by slightly disturbing the connecting steel bars, such as vibrating the precast concrete member or the connecting steel bars, the connecting steel bars can be adjusted from the inclined state to the horizontal state, and the connecting steel bars have the performance of automatic positioning. This characteristic facilitates the setting of connecting steel bars between precast members, especially when setting connecting steel bars for the close-fitting connection between precast concrete members.

[0030] By adopting the technology of the present invention, the connecting steel bars are installed in the precast concrete member on one side of the joint and then extend into the precast concrete member on the other side of the joint. The automatic positioning performance of the connecting steel bars realizes the automatic installation of the connecting steel bars, which is extremely convenient and fast. The present invention also provides various different steel bars that cooperate with the connecting steel bars, and can very simply pull out the connecting steel bars from the accommodating part, greatly accelerating the construction safety and speed.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG. 1(a) and FIG. 1(b) show precast concrete members provided by an embodiment of the present invention, wherein in FIG. 1(a), the connecting steel bars are arranged in the transverse holes in an inclined state, and in FIG. 1(b), the connecting steel bars are arranged in the transverse holes in a horizontal state.

[0033] Figure 2 Shows a precast concrete splicing member provided by an embodiment of the present invention.

[0034] Figure 3 Shows a precast concrete member provided by another embodiment of the present invention.

[0035] FIG. 4(a) and FIG. 4(b) show precast concrete members provided by another embodiment of the present invention, wherein in FIG. 4(a), the connecting steel bars are arranged in the accommodating part in an inclined state, and FIG. 4(b) is a partial cross-sectional view of FIG. 4(a).

[0036] Figure 5 Shows a precast concrete splicing member provided by another embodiment of the present invention.

[0037] FIG. 6(a) and FIG. 6(b) show the splicing process of a precast concrete member and a precast concrete splicing member provided by an embodiment of the present invention.

[0038] Figure 7 Shows a precast concrete member provided by another embodiment of the present invention.

[0039] Figure 8Shows a precast concrete member provided by another embodiment of the present invention.

[0040] Figures 9(a) and 9(b) show a precast concrete member provided by another embodiment of the present invention, wherein in Figure 9(a), the connecting steel bars are arranged in an inclined state in the accommodating part, and in Figure 9(b), the connecting steel bars are arranged in a horizontal state in the accommodating part.

[0041] Figure 10 Shows a longitudinal steel bar provided by an embodiment of the present invention.

[0042] Figure 11 Shows a connecting steel bar provided by an embodiment of the present invention.

[0043] Figure 12 Shows a connecting steel bar provided by another embodiment of the present invention.

[0044] Figures 13(a) and 13(b) show a precast concrete member provided by another embodiment of the present invention including Figure 11 the connecting steel bar shown, wherein in Figure 13(a), the connecting steel bars are arranged in an inclined state in the accommodating part, and in Figure 13(b), the connecting steel bars are arranged in a horizontal state in the accommodating part.

[0045] Figure 14 Shows a precast concrete member provided by another embodiment of the present invention.

[0046] Figures 15(a) and 15(b) show a precast concrete member provided by another embodiment of the present invention, wherein in Figure 15(a), the connecting steel bars are arranged in an inclined state in the accommodating part, and in Figure 15(b), the connecting steel bars are arranged in a horizontal state in the accommodating part.

[0047] Figure 16 Shows a partial structure of a precast concrete member provided by another embodiment of the present invention.

[0048] Figure 17 Shows a precast concrete member provided by another embodiment of the present invention.

[0049] Figure 18 Shows a precast concrete member provided by another embodiment of the present invention.

[0050] Figure 19 Shows a precast concrete member provided by another embodiment of the present invention.

[0051] Figure 20 Shows a precast concrete member provided by another embodiment of the present invention. Detailed implementation manners

[0052] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the accompanying drawings and description are considered to be exemplary in nature rather than restrictive.

[0053] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. Further, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0054] In the present invention, ordinal numbers such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0055] It should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" in the present invention should be understood in a broad sense. For example, it can be a fixed connection, a flexible connection, a detachable connection, or an integral connection, and also includes the case where the two are in contact with each other; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0056] The following further describes the specific embodiments of the present invention in more detail in conjunction with the accompanying drawings and embodiments, so as to better understand the solution of the present invention and the advantages of its various aspects. However, the specific embodiments and examples described below are for illustrative purposes only and not a limitation of the present invention.

[0057] Figures 1(a) and 1(b) show a precast concrete member 100 provided by the present invention, which includes a connection end (i.e., the end where the precast concrete member is connected to other precast concrete members or cast-in-place concrete). The connection end has a connection end face 101, on which there is a receiving portion. In this embodiment, the receiving portion is a transverse hole 102. The transverse hole 102 opens on the connection end face 101 and is a hole extending substantially in the horizontal direction. The transverse hole can be parallel to the horizontal direction or can form a certain angle with the horizontal direction (within the range of 0 to 90°, excluding the endpoints). In the present invention, the transverse hole 102 can be a through hole or a non-through hole, which can be set as needed.

[0058] The connecting steel bar 103 is received in the transverse hole 102. The "receiving" mentioned in the present invention means "partially or entirely located in", that is, the connecting steel bar 103 is received in the transverse hole 102 means that the connecting steel bar 103 is partially or entirely located within the transverse hole 102. Among them, the connecting steel bar 103 includes a first side 103a close to the connection end face 101. The connecting steel bar 103 in this embodiment is a rectangular steel bar ring, so it also has a second side 103b away from the connection end face. It should be noted that in the present invention, the connecting steel bar 103 can also be of other shapes and does not necessarily have a second side (such as a "]" shape), as long as the relevant effects can be achieved.

[0059] In the present invention, the connecting steel bar 103 can move within the transverse hole 102, so as to be arranged in the transverse hole 102 in an inclined state (Figure 1(a)) or a horizontal state (Figure 1(b)). Among them, when the connecting steel bar 103 is arranged in the transverse hole 102 in an inclined state, the first side 103a is located within the transverse hole 102; when the connecting steel bar 103 is arranged in the transverse hole 102 in a horizontal state, the first side 103a extends outside the connection end face 101. It should be noted that in other embodiments of the present invention, when the connecting steel bar 103 is arranged in the transverse hole 102 in an inclined state, the first side 103a is located outside the transverse hole 102; when the connecting steel bar 103 is arranged in the transverse hole 102 in a horizontal state, the first side 103a extends outside the connection end face 101 by a greater length.

[0060] In this embodiment, the connecting steel bar 103 is installed after the concrete part of the precast concrete member 100 is fabricated, which facilitates the fabrication of the precast concrete member 100. In the transportation state, the connecting steel bar 103 is arranged in the transverse hole 102 in an inclined state. During construction, the connecting steel bar 103 can be adjusted to the horizontal state, which is very convenient. Since the connecting steel bar 103 has a tendency to change from an inclined state to a horizontal state under its own weight, indirect disturbance (such as vibrating the precast concrete member) can also adjust the connecting steel bar 103 to the horizontal state, enabling the connecting steel bar 103 to have the performance of automatically adjusting to the horizontal state. In this embodiment, only transverse holes are provided in the precast concrete member 100, which simplifies the hole-opening structure.

[0061] In this embodiment, the precast concrete member 100 can be spliced with the cast-in-place concrete during construction, or can also be spliced with Figure 2 the precast concrete splicing member 200 as shown.

[0062] The precast concrete splicing member 200 includes a splicing hole 201, which is also a transverse hole in this embodiment. In other embodiments of the present invention, it can also have other structures. The joint width between the precast concrete member 100 and the precast concrete splicing member 200 can be 0 - 20 mm, that is, a close joint technology is adopted between the precast concrete member 100 and the precast concrete splicing member 200. The joint width between the precast concrete member 100 and the precast concrete splicing member 200 can also be greater than 20 mm. Preferably, a close joint is adopted between the precast concrete member 100 and the precast concrete splicing member 200. Among them, the sum of the depth of the splicing hole 201, the depth of the transverse hole 102, and the joint width is 0 - 20 mm (the length in the horizontal direction in this embodiment) larger than the length of the connecting steel bar 103, or 20 mm - 200 mm, etc.

[0063] When splicing with the cast-in-place concrete, the connecting steel bar 103 of the precast concrete member 100 is adjusted from the inclined state to the horizontal state, so that the first side 103a of the connecting steel bar 103 extends out of the connecting end face 101, and then the post-cast concrete is poured to connect the precast concrete member 100 and the cast-in-place concrete together to form an assembly.

[0064] When splicing with the precast concrete splicing member 200, the connecting end face 101 of the precast concrete member 100 is arranged opposite to the splicing end face 202 of the precast concrete splicing member 200; the connecting steel bars 103 of the precast concrete member 100 are adjusted from an inclined state to a horizontal state, so that the first side 103a of the connecting steel bars 103 extends out of the connecting end face 101 and extends into the splicing hole 201; since the connecting steel bars 103 tend to change from an inclined state to a horizontal state under their own weight, indirect disturbance can also adjust the connecting steel bars 103 to a horizontal state; thus, even when the joint width between the precast concrete splicing member 200 and the precast concrete member 100 is 0, resulting in no operating space and unable to directly contact the connecting steel bars, disturbing the connecting steel bars 103 can adjust them from an inclined state to a horizontal state, such as vibrating the precast concrete member 100; in this way, the connecting steel bars 103 connecting the precast concrete splicing member 200 and the precast concrete member 100 have the performance of automatic positioning, realizing the automatic installation of the connecting steel bars, which is extremely convenient and fast. Then, concrete is poured into the transverse holes 102 of the precast concrete member 100 and the splicing holes 201 of the precast concrete splicing member 200, so that the precast concrete member 100 and the precast concrete splicing member 200 are fixedly connected together to form a precast concrete assembly. In order to facilitate the pouring of concrete at the joint and in the transverse holes, the transverse holes can be inclined at a certain angle.

[0065] As Figure 3 shown, the precast concrete member 100 shown in FIG. 1 may further include a first longitudinal bar 104. The first longitudinal bar 104 is located outside the connecting end face 101, and the first longitudinal bar 104 is connected to the first side 103a. This connection can be a fixed connection or an unfixed connection.

[0066] When it is an unfixed connection, the first longitudinal bar 104 can resist the connecting steel bars 103, so that the connecting steel bars 103 do not extend out of the transverse holes 102 and are placed in the transverse holes 102 in an inclined state. In this case, during construction, the first longitudinal bar 104 can be directly removed, and then the subsequent construction process described above can be carried out. According to the technical route of this embodiment, other measures can be adopted to resist the connecting steel bars 103, such as blocking the transverse holes 102 with a rigid plate, etc.

[0067] When it is a fixed connection, the first longitudinal bar 104 can move (such as horizontally), so that the connecting steel bars 103 are arranged in the transverse holes 102 in an inclined state or a horizontal state. Among them, in the inclined state, the first longitudinal bar 104 contacts the connecting end face 101; in the horizontal state, the first longitudinal bar 104 is away from the connecting end face 101. During construction, the state of the connecting steel bars 103 can be adjusted through the first longitudinal bar 104, and then it can be spliced with other cast-in-place concrete splicing members or precast splicing members (such as those with longitudinal grooves at their connecting ends).

[0068] Figures 4(a) and 4(b) show another precast concrete member 400 of the present invention. The difference between it and the precast concrete member 100 shown in Figures 1(a) and 1(b) is that the connecting end of the precast concrete member 400 further includes a longitudinal hole 404 communicating with the first transverse hole 402 (i.e., the accommodating part is the intersecting first transverse hole 402 and longitudinal hole 404), and its opening is arranged on a surface 405 perpendicular to the first connecting end face 401. In another embodiment of the present invention, the surface 405 may not be perpendicular to the first connecting end face 401. In the present invention, the longitudinal hole 404 may be a through hole or a non-through hole. In this embodiment, it is a through hole (as shown in Figure 4(b)). At this time, the connecting steel bar 403 is accommodated in the first transverse hole 402 and the longitudinal hole 404. In other embodiments of the present invention, the connecting steel bar 403 may also be only accommodated in the first transverse hole 402 or only accommodated in the longitudinal hole 404.

[0069] In this embodiment, in the transportation state, the connecting steel bar 403 is arranged in the first transverse hole 402 and the longitudinal hole 404 in an inclined state. During construction, the connecting steel bar 403 can be adjusted to a horizontal state.

[0070] Similar to the embodiments shown in Figures 1(a) and 1(b), the precast concrete member 400 in this embodiment can be spliced with cast-in-place concrete during construction, or can also be spliced with Figure 2 the precast concrete splicing member 200 or Figure 5 the precast concrete splicing member 500 shown in

[0071] The precast concrete splicing member 500 includes a splicing hole 501, which is also an intersecting transverse hole and longitudinal hole in this embodiment. In other embodiments of the present invention, the splicing hole 501 may only include a transverse hole.

[0072] When splicing with cast-in-place concrete, the connecting steel bar 403 of the precast concrete member 400 is adjusted from an inclined state to a horizontal state, so that the first side 403a of the connecting steel bar 403 extends out of the first connecting end face 401, cast-in-place concrete is poured, and concrete is poured into the transverse hole, so that the precast concrete member 400 and the connecting member are fixedly connected together to form a precast concrete assembly.

[0073] When splicing with the precast concrete splicing member 500, the first connection end face 401 of the precast concrete member 400 is arranged opposite to the splicing end face 502 of the precast concrete splicing member 500; the connecting steel bar 403 of the precast concrete member 400 is pulled from an inclined state to a horizontal state, so that the first side 403a of the connecting steel bar 403 extends out of the first connection end face 401 and extends into the splicing hole 501; then, concrete is poured into the first transverse hole 402 of the precast concrete member 400 and the splicing hole 501 of the precast concrete splicing member 500, so that the precast concrete member 400 and the precast concrete splicing member 500 are fixedly connected together to form a precast concrete assembly.

[0074] Figures 6(a) and 6(b) show the splicing process of the precast concrete member 400 shown in Figures 4(a) and 4(b) and Figure 2 the precast concrete splicing member 200 shown. Among them, in Figure 6(a), the connecting steel bar 403 is in an inclined state, and in Figure 6(b), the connecting steel bar 403 is in a horizontal state and extends into the splicing hole 201 of the precast concrete splicing member 200. In order to facilitate pouring of concrete into the splicing hole 201, the splicing hole can be inclined at a certain angle. Adopting the connection structure of the precast concrete member shown in Figures 6(a) and 6(b), the cast-in-place concrete is poured through the longitudinal hole 404 of the precast concrete member 400, and the concrete fills the splicing hole 201, realizing the splicing of the precast concrete members, maximizing the reduction of the opening ratio of the precast concrete members, and facilitating the pouring of the cast-in-place concrete, and the concrete is easy to fill the splicing hole 201.

[0075] As Figure 7 shown, the precast concrete member 400 shown in Figure 4 may further include a first longitudinal bar 406. The connection method, function and construction method of the first longitudinal bar 406 and Figure 3 the first longitudinal bar 104 shown are similar and will not be elaborated here.

[0076] As Figure 8 shown, the precast concrete member 400 shown in Figure 4 may further include a second longitudinal bar 407, and the second longitudinal bar 407 is at least one. The second longitudinal bar 407 is arranged in the longitudinal hole 404 along the length direction of the longitudinal hole 404, and the connecting steel bar 403 is connected to the second longitudinal bar 407. In this embodiment, the second longitudinal bar 407 is arranged in the longitudinal hole 404. The second side 403b of the connecting steel bar 403 away from the first connection end face 401 can move up and down along the length direction of the second longitudinal bar 407, so that the connecting steel bar 403 is arranged in the first transverse hole 402 and the longitudinal hole 404 in an inclined state or a horizontal state.

[0077] A first limiting member (not shown in the figure) may be provided on the second longitudinal reinforcement bar 407. When the second side moves to the first limiting member, the connecting reinforcement bar 403 is arranged in the first transverse hole 402 and the longitudinal hole 404 in a horizontal state. The first limiting member is used to position the connecting reinforcement bar 403 and can prevent the second side 403b of the connecting reinforcement bar 403 from deflecting downward beyond the horizontal state.

[0078] As shown in FIGS. 9(a) and 9(b), the precast concrete member 400 shown in FIGS. 4(a) and 4(b) may further include a third longitudinal reinforcement bar 408, and the number of the third longitudinal reinforcement bars 408 is one, two or more. The third longitudinal reinforcement bar 408 is arranged in the longitudinal hole 404 along the length direction of the longitudinal hole 404. In this embodiment, the third longitudinal reinforcement bar 408 is movably arranged in the longitudinal hole 404. The third longitudinal reinforcement bar 408 is connected to the second side 403b of the connecting reinforcement bar 403 far from the first connecting end face 401. The third longitudinal reinforcement bar 408 can move up and down to drive the connecting reinforcement bar 403 to be arranged in the first transverse hole 402 and the longitudinal hole 404 in an inclined state (FIG. 9(a)) or a horizontal state (FIG. 9(b)). That is, by pulling the upper end (or the lower end) of the third longitudinal reinforcement bar 408 away from the precast concrete member 400, the connecting reinforcement bar 403 is driven to be in an inclined state; moving the upper end (or the lower end) of the third longitudinal reinforcement bar 408 closer to the precast concrete member 400 drives the connecting reinforcement bar 403 to tend to the horizontal state until the horizontal state. In this way, the linkage between the connecting reinforcement bar 403 and the third longitudinal reinforcement bar 408 is realized. Without directly contacting the connecting reinforcement bar 403, the connecting reinforcement bar 403 can be adjusted to the required position, which is convenient for arranging the connecting reinforcement bar; moreover, in actual engineering, there are multiple connecting reinforcement bars at the same joint. By adopting the technology of this embodiment, it is not necessary to arrange the connecting reinforcement bars one by one.

[0079] A limiting member (such as Figure 10 the second limiting member 408a shown) may also be provided on the third longitudinal reinforcement bar 408, and the second limiting member 408a may be a short reinforcement bar. When the third longitudinal reinforcement bar 408 is dragged, the second limiting member 408a can hook the connecting reinforcement bar 403 to adjust it to an inclined or horizontal state. Of course, the third longitudinal reinforcement bar may also be fixedly connected to the second side 403b or connected together in other ways as long as the relevant effects can be achieved.

[0080] As Figure 11 shown in FIGS. 13(a) and 13(b), the second side 403b of the connecting reinforcement bar 403 of the precast concrete member 400 shown in FIGS. 4(a) and 4(b) may include a sliding part A. At this time, a sliding groove 404a is provided in the length direction of the longitudinal hole 404. The sliding part A is slidably arranged in the sliding groove 404a, so that the connecting reinforcement bar 403 is arranged in the first transverse hole 402 and the longitudinal hole 404 in an inclined state (FIG. 13(a)) or a horizontal state (FIG. 13(b)). Figure 11The middle sliding part A is separately connected to the connecting steel bar 403. Figure 12 The middle sliding part A1 is formed by extending from the second side 403b of the connecting steel bar 403.

[0081] It should be noted that the precast concrete member 100 shown in Fig. 1(a) and Fig. 1(b) or Figure 3 may be provided with a chute 404a and a second side 403b including the sliding part A similar to those shown in Fig. 13. Among them, the chute can be provided on the bottom surface of the transverse hole 102. The rest is similar to Fig. 13(a) and Fig. 13(b), and will not be elaborated here. A chute 404a is provided in the length direction of the longitudinal hole 404, so that the second side 403b of the connecting steel bar 403 is in a specified position, thereby ensuring that the position of the connecting steel bar 403 is in a controllable state. For example, the connecting steel bar will not fall off during transportation, and the length of the connecting steel bar extending out of the precast concrete member 400 is a fixed value when the connecting steel bar is adjusted to a horizontal state, etc.; in particular, the longitudinal bars not connected to the connecting steel bar can also achieve controllable position of the connecting steel bar 403. For example, the connecting steel bar 403 will not fall off, and longitudinal bars can be saved.

[0082] A third limiting member B (as Figure 14 shown) may be provided in the chute 404a. When the second side 403b slides to the third limiting member B, the connecting steel bar 403 is arranged horizontally in the first transverse hole 402 and the longitudinal hole 404. The third limiting member B can be a concrete block.

[0083] Figs. 15(a) and 15(b) show a chute 404b in another embodiment of the present invention, which is different from the position where the chute 404a is provided. Among them, the connecting steel bar 403 is in an inclined state in Fig. 15(a) and in a horizontal state in Fig. 15(b). Figure 16 shows a chute 404c and a connecting steel bar in another embodiment of the present invention, and the connecting steel bar has a sliding part A2 different from the Figure 10 and Figure 11 shown sliding parts A, A1.

[0084] In the present invention, the precast concrete member may include one connecting end or multiple connecting ends (for example Figures 17 - 19 shown). Figure 17 and 18 has two connecting ends, Figure 19 has three connecting ends, Figure 18 The precast concrete member is an L-shaped member, Figure 19 The precast concrete member is a T-shaped member.

[0085] As Figure 20 shown, a plurality of connecting steel bars may be included in one accommodating part of the present invention. Of course, the first, second, and third longitudinal bars can each be one or more.

[0086] The precast concrete member of the present invention has a simple structure and is very convenient for construction.

[0087] Obviously, the above embodiments are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A precast concrete component, characterized in that, it includes a connection end, and the connection end includes a receiving portion and connection steel bars received in the receiving portion; the receiving portion includes a transverse hole and a longitudinal hole that communicate with each other. The opening of the transverse hole is provided on the connection end face of the connection end, and the opening of the longitudinal hole is provided on the top surface of the connection end. The connection steel bar includes a first side close to the connection end face; wherein, the connection steel bar can move within the receiving portion so as to be arranged in the receiving portion in an inclined state or a horizontal state. When the connection steel bar is arranged in the receiving portion in a horizontal state, the first side extends outside the connection end face; the transverse hole is a through hole or a non-through hole; the precast concrete component further includes a second longitudinal bar, and the second longitudinal bar is arranged in the longitudinal hole along the length direction of the longitudinal hole. The connection steel bar further includes a second side away from the connection end face. The connection steel bar is connected to the second longitudinal bar, and the second side can move up and down along the length direction of the second longitudinal bar so that the connection steel bar is arranged in the receiving portion in an inclined state or a horizontal state. A first limiting member is provided on the second longitudinal bar. When the second side moves to the first limiting member, the connection steel bar is arranged in the receiving portion in a horizontal state; or the precast concrete component further includes a third longitudinal bar, and the third longitudinal bar is arranged in the longitudinal hole along the length direction of the longitudinal hole. The connection steel bar further includes a second side away from the connection end face. The third longitudinal bar is connected to the second side, and the third longitudinal bar can move up and down so that the connection steel bar is arranged in the receiving portion in an inclined state or a horizontal state.

2. The precast concrete component according to claim 1, characterized in that, it further includes a first longitudinal bar, and the first longitudinal bar is located outside the connection end face.

3. The precast concrete component according to claim 2, characterized in that, the first longitudinal bar is connected to the first side, and the first longitudinal bar can move so that the connection steel bar is arranged in the receiving portion in an inclined state or a horizontal state; wherein, in the inclined state, the first longitudinal bar contacts the connection end face; in the horizontal state, the first longitudinal bar is away from the connection end face.

4. The precast concrete component according to claim 1, characterized in that, a second limiting member is provided on the third longitudinal bar.

5. The precast concrete component according to claim 1, characterized in that, the connection steel bar further includes a second side away from the connection end face, and the second side includes a sliding portion. A sliding groove is provided on the bottom surface of the transverse hole or along the length direction of the longitudinal hole. The sliding portion is slidably arranged in the sliding groove so that the connection steel bar is arranged in the receiving portion in an inclined state or a horizontal state; a third limiting member is provided in the sliding groove. When the second side slides to the third limiting member, the connection steel bar is arranged in the receiving portion in a horizontal state.

6. A precast concrete assembly, characterized in that, it includes the precast concrete component according to any one of claims 1-5.

7. The precast concrete component according to claim 6, wherein, it further comprises a precast concrete splicing component that matches the precast concrete member.

8. The precast concrete component according to claim 7, wherein, the precast concrete splicing component includes splicing holes, and the sum of the depth of the splicing holes and the depth of the transverse holes is greater than or equal to the length of the connecting steel bars.

9. The splicing method of the precast concrete component according to claim 6, comprising: adjusting the connecting steel bars of the precast concrete member from an inclined state to a horizontal state, and inserting the first side of the connecting steel bars into a connecting member; pouring concrete into the accommodating part to fixedly connect the precast concrete member and the connecting member together.

10. The splicing method of the precast concrete component according to claim 8, comprising: oppositely arranging the connecting end face of the precast concrete member and the splicing end face of the precast concrete splicing component; adjusting the connecting steel bars of the precast concrete member from an inclined state to a horizontal state, and inserting the first side of the connecting steel bars into the splicing holes; and pouring concrete into the accommodating part of the precast concrete member and the splicing holes of the precast concrete splicing component to fixedly connect the precast concrete member and the precast concrete splicing component together.

Images