Precast concrete component, precast concrete assembly and splicing method thereof

Abstract

The present invention provides a precast concrete component, a precast concrete assembly and a splicing method thereof. The precast concrete component comprises a connection end, the connection end comprises a connection end face, a longitudinal groove arranged along the length direction of the connection end face, a connection steel bar accommodated in the longitudinal groove and a supporting steel bar fixedly arranged in the longitudinal groove; the supporting steel bar supports the connection steel bar, and the connection steel bar comprises a first side close to the connection end face; wherein the connection steel bar can move in the longitudinal groove, so as to be arranged in the longitudinal groove in an inclined state or a horizontal state, and when the connection steel bar is arranged in the longitudinal groove 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 to construct.

Description

Technical Field

[0001] The present invention relates to the technical field of building engineering, and in particular to a precast concrete component, a precast concrete assembly and a splicing method thereof. Background Art

[0002] In order to improve the traditional construction method of first tying steel bars and then pouring concrete, which causes slow construction speed and dirty and messy construction sites, the construction industry has implemented an assembled construction method.

[0003] The structure of precast components in precast concrete structures determines the efficiency and benefits of the structure, and the performance of horizontal and vertical joints between precast components determines the overall performance of the structure. The key technology of connecting steel bars at the joints between precast concrete components to assemble the integral structure. In the prior art, there are generally two technical solutions. One is to extend connecting steel bars from the precast components, which has low production, transportation and installation efficiency and poor benefits; the other technical solution is the composite slab shear wall. Although the precast components do not have reinforcement, post-cast strips are set at the joints, and the construction is relatively complicated.

[0004] The close-jointed connection technology used in the joints between prefabricated components is highly efficient and easy to construct, but how to set the connecting steel bars is the key technology. Summary of the invention

[0005] In order to solve one of the problems in the prior art, the first object of the present invention is to provide a precast concrete component. The precast concrete component comprises a connection end, the connection end comprises a connection end face, a longitudinal groove arranged along the length direction of the connection end face, a connection steel bar accommodated in the longitudinal groove, and a supporting steel bar fixedly arranged in the longitudinal groove; the supporting steel bar supports the connection steel bar, and the connection steel bar comprises a first side close to the connection end face;

[0006] The connecting steel bar can move in the longitudinal groove, so as to be arranged in the longitudinal groove in an inclined state or a horizontal state.

[0007] When the connecting steel bar is arranged in the longitudinal groove in an inclined state, the first side is located in the longitudinal groove;

[0008] When the connecting steel bar is arranged in the longitudinal groove in a horizontal state, the first side extends out of the connecting end surface.

[0009] In some embodiments of the present invention, the precast concrete component further includes a first longitudinal reinforcement arranged in the longitudinal groove along the length direction of the longitudinal groove, the first longitudinal reinforcement is connected to the connecting steel bar, and the connecting steel bar further includes a second side away from the connecting end face, the second side can move up and down along the length direction of the first longitudinal reinforcement, so that the connecting steel bar is arranged in the longitudinal groove in an inclined state or a horizontal state.

[0010] In some embodiments of the present invention, a first limiting component is provided on the first longitudinal reinforcement, and when the second side moves to the first limiting component, the connecting steel bar is arranged in the longitudinal groove in a horizontal state.

[0011] In some embodiments of the present invention, the precast concrete component further includes a second longitudinal reinforcement arranged in the longitudinal groove along the length direction of the longitudinal groove, the connecting steel bar further includes a second side away from the connecting end face, the second longitudinal reinforcement is connected to the second side, and the second longitudinal reinforcement can move up and down, so that the connecting steel bar is arranged in the longitudinal groove in an inclined state or a horizontal state.

[0012] In some embodiments of the present invention, the connecting steel bar also includes a second side away from the connecting end face, the second side includes a sliding portion, a sliding groove is provided in the length direction of the longitudinal groove, and the sliding portion can be slidably arranged in the sliding groove, so that the connecting steel bar is arranged in the longitudinal groove in an inclined state or a horizontal state.

[0013] In some embodiments of the present invention, a second limiting component is provided in the slide groove, and when the second side slides to the second limiting component, the connecting steel bar is arranged in the longitudinal groove in a horizontal state.

[0014] In some embodiments of the present invention, the precast concrete component further comprises a third longitudinal reinforcement, wherein the third longitudinal reinforcement is connected to the first side, or the third longitudinal reinforcement is connected to the connecting steel bar and is close to the first side.

[0015] In some embodiments of the present invention, the third longitudinal reinforcement is movable so that the connecting reinforcement is arranged in the longitudinal groove in an inclined state or a horizontal state.

[0016] In some embodiments of the present invention, the precast concrete component further includes a limiting steel bar fixedly disposed in the longitudinal groove, the limiting steel bar is located above the supporting steel bar, and the connecting steel bar moves in a gap between the supporting steel bar and the limiting steel bar.

[0017] In some embodiments of the present invention, the distance between the supporting steel bar and the limiting steel bar is 0-15 mm larger than the diameter of the connecting steel bar.

[0018] In some embodiments of the present invention, the supporting steel bars and / or the limiting steel bars are transverse steel bars or U-shaped steel bars.

[0019] A second object of the present invention is to provide a precast concrete assembly comprising the above-mentioned precast concrete component.

[0020] In some embodiments of the present invention, the precast concrete assembly further includes a precast concrete splicing component matched with the precast concrete component.

[0021] In some embodiments of the present invention, the precast concrete splicing component includes a splicing groove, in which a lap reinforcement having a height equal to or lower than that of the supporting steel bar is provided;

[0022] The sum of the depth of the splicing groove and the depth of the longitudinal groove is greater than or equal to the length of the connecting steel bar.

[0023] A third object of the present invention is to provide a method for splicing the above-mentioned precast concrete components, comprising:

[0024] Adjusting the connecting steel bar of the precast concrete member from an inclined state to a horizontal state, and allowing the first side of the connecting steel bar to extend into the connecting member;

[0025] Concrete is poured into the longitudinal groove to fix the precast concrete member and the connecting member together.

[0026] A fourth object of the present invention is to provide another method for splicing the above-mentioned precast concrete components, comprising:

[0027] Arrange the connection end surface of the precast concrete component and the splicing end surface of the precast concrete splicing component facing each other;

[0028] Adjusting the connecting steel bar of the precast concrete component from an inclined state to a horizontal state, and placing the first side of the connecting steel bar on the overlapped reinforcement; and

[0029] Concrete is poured into the longitudinal groove of the precast concrete component and the splicing groove of the precast concrete splicing component to fix the precast concrete component and the precast concrete splicing component together.

[0030] The precast concrete component of the present invention has a simple structure. The connecting steel bars are installed in the longitudinal groove after the precast concrete component is manufactured, which does not interfere with the manufacturing of the precast concrete component. The connecting steel bars do not need to be installed on site, which reduces the workload on site. During transportation and hoisting, the connecting steel bars are accommodated in the longitudinal groove, do not occupy volume, and will not be collided. During construction, the connecting steel bars only need to be adjusted to a horizontal state to connect with other connecting components, and the process is simple. Moreover, since the connecting steel bars are tilted in the longitudinal groove during the manufacturing and transportation stages, the depth of the longitudinal groove is greatly reduced, thereby reducing the amount of post-cast concrete.

[0031] The connecting steel bar of the present invention has a tendency to adjust from an inclined state to a horizontal state under its own weight, so that the connecting steel bar has a certain degree of automaticity in adjusting from an inclined state to a horizontal state, that is, the connecting steel bar can be adjusted from an inclined state to a horizontal state by slightly disturbing the connecting steel bar, such as vibrating the precast concrete component or the connecting steel bar, and the connecting steel bar has the performance of automatically being in place. This feature facilitates the arrangement of connecting steel bars between precast components, and is particularly suitable for the arrangement of connecting steel bars when precast concrete components are closely connected.

[0032] By adopting the technology of the present invention, the connecting steel bar is installed in the precast concrete component on one side of the joint, and then extends into the precast concrete component on the other side of the joint, that is, the connecting steel bar has the performance of automatic positioning, realizing the automatic installation of the connecting steel bar, which is extremely convenient and fast. The present invention also provides various different steel bars that match the connecting steel bar, which can easily pull the connecting steel bar out of the accommodating part, greatly improving the safety and speed of construction.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG. 1( a ) and FIG. 1( b ) show a precast concrete component provided by an embodiment of the present invention, wherein the connecting steel bars in FIG. 1( a ) are arranged in a tilted state in the longitudinal groove, and the connecting steel bars in FIG. 1( b ) are arranged in a horizontal state in the longitudinal groove.

[0035] Figure 2 A precast concrete splicing component provided by an embodiment of the present invention is shown.

[0036] Figure 3 A precast concrete component provided by another embodiment of the present invention is shown.

[0037] FIG. 4( a ) and FIG. 4( b ) show a precast concrete component provided by another embodiment of the present invention, wherein the connecting steel bars in FIG. 4( a ) are arranged in a tilted state in the longitudinal groove, and the connecting steel bars in FIG. 4( b ) are arranged in a horizontal state in the longitudinal groove.

[0038] Figure 5 The longitudinal reinforcement provided by one embodiment of the present invention is shown.

[0039] Figure 6 The figure shows a connecting steel bar provided by an embodiment of the present invention.

[0040] Figure 7 A connecting steel bar provided by yet another embodiment of the present invention is shown.

[0041] Figure 8 Another embodiment of the present invention provides a Figure 6Precast concrete elements with connected reinforcement shown.

[0042] Fig. 9 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0043] Fig.10 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0044] Fig.11 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0045] FIG. 12( a ) and FIG. 12 ( b ) show a precast concrete component provided by yet another embodiment of the present invention.

[0046] Fig.13 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0047] FIG. 14( a ) and FIG. 14 ( b ) show a precast concrete component provided by another embodiment of the present invention, wherein the connecting steel bars in FIG. 14( a ) are arranged in a tilted state in the longitudinal groove, and the connecting steel bars in FIG. 14( b ) are arranged in a horizontal state in the longitudinal groove.

[0048] Fig.15 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0049] Fig.16 A precast concrete component provided by yet another embodiment of the present invention is shown.

[0050] FIG. 17 ( a ) and FIG. 17 ( b ) show a splicing process of a precast concrete component and a precast concrete splicing component provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0052] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of 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.

[0053] In the present invention, the terms "first", "second" and other ordinal numbers are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] It should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" in the present invention should be understood in a broad sense, for example, it can be a fixed connection, or a flexible connection, or a detachable connection, or an integral connection, including the situation where the two are in contact with each other; it can be a mechanical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0055] The following is a more detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings and examples, so that the scheme of the present invention and its advantages in various aspects can be better understood. However, the specific embodiments and examples described below are only for the purpose of illustration, rather than for limiting the present invention.

[0056] FIG. 1 (a) and FIG. 1 (b) show a precast concrete component 100 provided by the present invention, which includes a connection end (i.e., the end of the precast concrete component connected to other components), the connection end is provided with a connection end face 101, and a longitudinal groove 102 is provided along the length direction of the connection end face 101. The longitudinal groove 102 is opened and arranged on the connection end face 101. In the present invention, the longitudinal groove 102 can be a through groove or a non-through groove, which can be set as needed.

[0057] The connecting steel bar 103 is accommodated in the longitudinal groove 102. There may be one or more connecting steel bars in the longitudinal groove 102. In the present embodiment, a plurality of connecting steel bars 103 are arranged along the length direction of the longitudinal groove 102. The "accommodating" mentioned in the present invention means "partially or entirely located", that is, the connecting steel bar 103 is accommodated in the longitudinal groove 102, which means that the connecting steel bar 103 is partially or entirely located in the longitudinal groove 102. Among them, the connecting steel bar 103 includes a first side 103a close to the connecting end face 101. The connecting steel bar 103 in the present embodiment is a rectangular steel bar ring, so it also has a second side 103b away from the connecting end face. It should be noted that the connecting steel bar 103 in the present invention can also be other shapes, and does not necessarily have a second side (such as a "]" shape), as long as the relevant effect can be achieved.

[0058] The supporting steel bar 104 supports the connecting steel bar 103. In this embodiment, the supporting steel bar 104 is a transverse bar, which is fixedly arranged in the longitudinal groove 102. The connecting steel bar 103 can move in the longitudinal groove 102, so that it is arranged in the longitudinal groove 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 longitudinal groove 102 in an inclined state, the first side 103a is located in the longitudinal groove 102; when the connecting steel bar 103 is arranged in the longitudinal groove 102 in a horizontal state, the first side 103a extends out of the connecting 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 longitudinal groove 102 in an inclined state, the first side 103a is located outside the longitudinal groove 102; when the connecting steel bar 103 is arranged in the longitudinal groove 102 in a horizontal state, the first side 103a extends out of the connecting end face 101 by a greater length.

[0059] The connecting steel bar 103 can be installed after the concrete part of the precast concrete component 100 is manufactured, which facilitates the manufacture of the precast concrete component 100. In this embodiment, in the transportation state, the connecting steel bar 103 is arranged in the longitudinal groove 102 in an inclined state. During construction, the connecting steel bar 103 can be adjusted to a horizontal state, which is very convenient; because the connecting steel bar 103 has a tendency to change from an inclined state to a horizontal state under its own weight, indirect disturbance can also adjust the connecting steel bar 103 to a horizontal state.

[0060] In the embodiment shown in FIG1 , the other end of the precast concrete component 100 opposite to the connection end is also provided with a longitudinal groove, but no connecting steel bar is provided in the groove, so the precast concrete components 100 can be spliced ​​together in pairs without the need for other splicing components. Of course, the opposite ends of the precast concrete components 100 may not be provided with grooves; the precast concrete components 100 may be spliced ​​together with cast-in-place concrete or with Figure 2 The precast concrete splicing components 200 are shown spliced ​​together.

[0061] The precast concrete splicing component 200 includes a splicing groove 201, which is also a longitudinal groove in the present embodiment. In other embodiments of the present invention, it can also be other types, such as holes. The joint width between the precast concrete component 100 and the precast concrete splicing component 200 can be 0-20mm, that is, the precast concrete component 100 and the precast concrete splicing component 200 adopt a close joint technology; the joint width between the precast concrete component 100 and the precast concrete splicing component 200 can also be greater than 20mm; preferably, the precast concrete component 100 and the precast concrete splicing component 200 are close joints. Among them, the sum of the depth of the splicing groove 201, the depth of the longitudinal groove 102 and the joint width is 0-50mm greater than the length of the connecting steel bar 103 (the horizontal length in the present embodiment), or 50mm-200mm, etc.

[0062] Figure 2 In the illustrated embodiment, a bridging bar 203 having the same height as or slightly lower than the supporting steel bar 104 is provided in the splicing groove 201 (the height of the adjacent precast concrete components 100 and the precast concrete splicing component 200 refers to the height when both are installed in place). When splicing with cast-in-place concrete, the connecting steel bar 103 of the precast concrete component 100 is adjusted from an inclined state to a horizontal state, so that the first side 103a of the connecting steel bar 103 extends out of the connecting end face 101 and extends into the cast-in-place concrete, so that the precast concrete component 100 and the cast-in-place concrete are fixedly connected together to form an assembly.

[0063] When splicing with the precast concrete splicing component 200, the connection end face 101 of the precast concrete component 100 is arranged opposite to the splicing end face 202 of the precast concrete splicing component 200; the connection steel bar 103 of the precast concrete component 100 is adjusted from an inclined state to a horizontal state, so that the first side 103a of the connection steel bar 103 extends out of the connection end face 101 and extends into the splicing groove 201 to be placed on the rib 203; because the connection steel bar 103 has a tendency to change from an inclined state to a horizontal state under its own weight, the indirect disturbance also The connecting steel bar 103 can be adjusted to a horizontal state; in this way, even if the joint width between the precast concrete splicing component 200 and the precast concrete component 100 is 0, resulting in no operating space and inability to directly contact the connecting steel bar, disturbing the connecting steel bar 103 can adjust it from an inclined state to a horizontal state, such as vibrating the precast concrete component 100; in this way, the connecting steel bar 103 connecting the precast concrete splicing component 200 and the precast concrete component 100 has the performance of automatically being in place, realizing the automatic installation of the connecting steel bar, which is extremely convenient and fast. Then, concrete is poured into the longitudinal groove 102 of the precast concrete component 100 and the splicing groove 201 of the precast concrete splicing component 200, so that the precast concrete component 100 and the precast concrete splicing component 200 are fixedly connected together to form a precast concrete assembly.

[0064] like Figure 3 As shown, the precast concrete component 100 shown in FIG1 may further include a first longitudinal reinforcement 105. The first longitudinal reinforcement 105 is arranged in the longitudinal groove 102 along the length direction of the longitudinal groove 102, and the connecting steel bar 103 is connected to the first longitudinal reinforcement 105. In this embodiment, the first longitudinal reinforcement 105 is fixedly arranged in the longitudinal groove 102. The second side 103b of the connecting steel bar 103 away from the connecting end surface 101 can move up and down along the length direction of the first longitudinal reinforcement 105, so that the connecting steel bar 103 is arranged in the longitudinal groove 102 in an inclined state or a horizontal state.

[0065] The first longitudinal reinforcement 105 may be provided with a first limiting component (not shown in the figure), and when the second side 103b moves to the first limiting component, the connecting reinforcement 103 is horizontally arranged in the longitudinal groove 102. The first limiting component is used to position the connecting reinforcement 103 and prevent the connecting reinforcement 103 from sliding downward to a position exceeding the horizontal position.

[0066] As shown in FIG. 4 (a) and FIG. 4 (b), the precast concrete component 100 shown in FIG. 1 may further include a second longitudinal rib 106. The second longitudinal rib 106 is arranged in the longitudinal groove 102 along the length direction of the longitudinal groove 102. In this embodiment, the second longitudinal rib 106 is movable in the longitudinal groove 102. The second longitudinal rib 106 is connected to the second side 103b of the connecting steel bar 103 away from the connecting end surface 101. The second longitudinal rib 106 can move up and down, so that the connecting steel bar 103 is arranged in the longitudinal groove 102 in an inclined state (FIG. 4 (a)) or a horizontal state (FIG. 4 (b)). That is, by pulling the upper end (or lower end) of the second longitudinal rib 106 away from the precast concrete component 100, the connecting steel bar 103 is driven to be in an inclined state; by moving the upper end (or lower end) of the second longitudinal rib 106 toward the precast concrete component 100, the connecting steel bar 103 is driven to be in a horizontal state until it is in a horizontal state. In this way, the connecting steel bar 103 is linked with the second longitudinal bar 106. The connecting steel bar 103 can be adjusted to the required position without directly contacting the connecting steel bar 103, which is convenient for setting the connecting steel bar. Moreover, in actual projects, there are multiple connecting steel bars at the same joint, and the technology of this embodiment does not need to set the connecting steel bars one by one.

[0067] A limiting component (such as Figure 5 The third limiting component 106a shown in the figure can be a short steel bar). When the second longitudinal bar 106 is dragged, the third limiting component 106a can hook the connecting steel bar 103 to adjust it to an inclined or horizontal state. Of course, the third longitudinal bar can also be fixedly connected to the second side 103b, or connected in other ways, as long as the relevant effect can be achieved.

[0068] like Figure 6 , Figure 8 As shown, the second side 103b of the connecting steel bar 103 of the precast concrete component 100 shown in FIG. 1 (a) and FIG. 1 (b) may include a sliding portion A. In this case, a sliding groove 102a is provided in the length direction of the longitudinal groove 102. The sliding portion A can be slidably arranged in the sliding groove 102a, so that the connecting steel bar 103 is arranged in the longitudinal groove 102 in an inclined state or a horizontal state. The sliding groove 102a is provided in the length direction of the longitudinal groove 102, so that the second side 103b of the connecting steel bar 103 has a specified position, thereby ensuring that the position of the connecting steel bar 103 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 component 100 when the connecting steel bar is adjusted to a horizontal state is a fixed value, etc.; in particular, the longitudinal bars that are not connected to the connecting steel bar can also realize the controllable position of the connecting steel bar 103 to avoid falling off.

[0069] Figure 6 The middle sliding part A is connected to the connecting steel bar 103 separately. Figure 7The middle sliding portion A1 is formed by extending the second side 103 b of the connecting steel bar 103 .

[0070] Fig. 9 The slide groove 102b in another embodiment of the present invention is shown, which is arranged at a different position from the slide groove 102a. A second limiting component B is arranged in the slide groove 102b. When the second side 103b slides to the second limiting component B, the connecting steel bar 103 is arranged in the longitudinal groove 102 in a horizontal state. The second limiting component B can be a concrete block.

[0071] Fig.10 The slide groove 102c and the connecting steel bar in another embodiment of the present invention are shown. The connecting steel bar has the same Figure 6 The sliding part A shown in Figure 7 The sliding portion A1 shown is different from the sliding portion A2.

[0072] like Fig.11 12( a ) and 12 ( b ), the precast concrete component 100 shown in FIG. 1 ( a ) and FIG. 1 ( b ) may further include a third longitudinal reinforcement 107 , and the third longitudinal reinforcement 107 is located outside the connection end surface 101 . Fig.11 In the embodiment shown, the third longitudinal reinforcement 107 is connected to the first side 103a, and the third longitudinal reinforcement 107 is located outside the annular connecting reinforcement 103. In the embodiment shown in Figure 12, the third longitudinal reinforcement 107 is located inside the annular connecting reinforcement 103 and is connected to the side of the connecting reinforcement 103. The connection can be a fixed connection or a loose connection.

[0073] Fig.11 In the embodiment shown, when the connection is not fixed, the third longitudinal reinforcement 107 can resist the connecting steel bar 103, so that the connecting steel bar 103 does not extend out of the longitudinal groove 102, and is placed in the longitudinal groove 102 in an inclined state. In this case, during construction, the third longitudinal reinforcement 107 can be directly removed, and then the subsequent construction process as described above is carried out. According to the technical route of this embodiment, other measures can be used to resist the connecting steel bar 103, such as blocking the longitudinal groove 102 with a rigid plate.

[0074] Fig.11 In the embodiments shown in FIG. 12 (a) and FIG. 12 (b) , when fixedly connected, the third longitudinal reinforcement 107 can move (for example, horizontally or longitudinally), so that the connecting reinforcement 103 is arranged in the longitudinal groove 102 in an inclined state (for example, as shown in FIG. 12 (a) ) or a horizontal state (for example, as shown in FIG. 12 (b) ). Fig.11In the illustrated embodiment, in the inclined state, the third longitudinal reinforcement 107 contacts the connection end surface 101; in the horizontal state, the third longitudinal reinforcement 107 is away from the connection end surface 101. During construction, the state of the connecting steel bar 103 can be adjusted by the third longitudinal reinforcement 107, and then spliced ​​with other cast-in-place concrete splicing components or prefabricated splicing components (for example, the connection ends of which are provided with longitudinal grooves).

[0075] Fig.11 In the embodiment shown, there is one third longitudinal rib 107, and in the embodiments shown in Figures 12(a) and 12(b), there are two third longitudinal ribs. In other embodiments of the present invention, the number of third longitudinal ribs may be other.

[0076] like Fig.13 As shown, a transverse rib 108 may be provided on the connecting end surface 101, the transverse rib 108 is connected to the third longitudinal rib 107, the length of the transverse rib 108 is greater than the width of the longitudinal groove 102, and plays a role in positioning the third longitudinal rib 107. In this embodiment, there are two transverse ribs 108, which are located at the upper and lower sides of the third longitudinal rib 107. In other embodiments of the present invention, the transverse rib 108 may be one or other numbers.

[0077] As shown in FIG. 14 (a) and FIG. 14 (b), the precast concrete component 100 shown in FIG. 1 may also include a limiting steel bar 109 fixedly arranged in the longitudinal groove 102. In this embodiment, the limiting steel bar 109 is also a transverse bar, which is located above the supporting steel bar 104, and the connecting steel bar 103 moves in the gap between the supporting steel bar 104 and the limiting steel bar 109, thereby switching between an inclined state (FIG. 14 (a)) and a horizontal state (FIG. 14 (b)). Optionally, the width of the gap (i.e., the distance between the supporting steel bar 104 and the limiting steel bar 109) is 1-15 mm (or other values) larger than the diameter of the connecting steel bar 103, so that the connecting steel bar 103 can move freely; at the same time, the supporting steel bar 104 and the limiting steel bar 109 clamp the connecting steel bar 103, which can better control the position of the connecting steel bar 103.

[0078] In the present invention, the supporting steel bars 104 and the limiting steel bars 109 may also be U-shaped steel bars, or any other shapes, as long as the corresponding supporting and limiting effects can be achieved.

[0079] In the present invention, the precast concrete component may include one connection end or multiple connection ends (e.g. Fig.15 as shown). Fig.15 The precast concrete component shown is an L-shaped component including two connecting ends; the precast concrete component of the present invention may also be in other shapes, such as a T-shaped component.

[0080] Fig.16Another precast concrete component 300 of the present invention is shown, in which the second side 303b of the uppermost connecting steel bar 303 extends out of the component in an inclined state. The connecting steel bar 303 is limited by supporting steel bars 304 and limiting steel bars 309.

[0081] Figures 17(a) and 17(b) show Fig.16 The precast concrete element 300 shown is Figure 2 The splicing process of the precast concrete splicing component 200 is shown. In FIG. 17 (a), the connecting steel bar 303 is in an inclined state, and in FIG. 17 (b), the connecting steel bar 303 is in a horizontal state and extends into the splicing groove 201 of the precast concrete splicing component 200; the portion of the connecting steel bar 303 extending into the splicing component 200 can be above the lap bar 203 or below the lap bar 203.

[0082] The prefabricated concrete component of the present invention has a simple structure and is very convenient to construct.

[0083] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For those skilled 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 methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A precast concrete component, It is characterized in that The connecting end comprises a connecting end surface, a longitudinal groove arranged along the length direction of the connecting end surface, a connecting steel bar accommodated in the longitudinal groove, and a supporting steel bar fixedly arranged in the longitudinal groove; the supporting steel bar supports the connecting steel bar, and the connecting steel bar comprises a first side close to the connecting end surface; Wherein, the connecting steel bar can move in the longitudinal groove, so as to be arranged in the longitudinal groove in an inclined state or a horizontal state, and when the connecting steel bar is arranged in the longitudinal groove in a horizontal state, the first side extends out of the connecting end surface; The precast concrete component further includes a first longitudinal reinforcement arranged in the longitudinal groove along the length direction of the longitudinal groove, the first longitudinal reinforcement is connected to the connecting reinforcement, the connecting reinforcement further includes a second side away from the connecting end surface, the second side can move up and down along the length direction of the first longitudinal reinforcement, so that the connecting reinforcement is arranged in the longitudinal groove in an inclined state or a horizontal state, A first limiting component is provided on the first longitudinal reinforcement, and when the second side moves to the first limiting component, the connecting reinforcement is arranged in the longitudinal groove in a horizontal state; or The precast concrete component further includes a second longitudinal reinforcement disposed in the longitudinal groove along the length direction of the longitudinal groove, the connecting steel bar further includes a second side away from the connecting end surface, the second longitudinal reinforcement is connected to the second side, and the second longitudinal reinforcement can move up and down, so that the connecting steel bar is disposed in the longitudinal groove in an inclined state or a horizontal state; The connecting steel bar is a rectangular steel bar ring.

2. The precast concrete element according to claim 1, It is characterized in that The connecting steel bar also includes a second side away from the connecting end face, the second side includes a sliding portion, a sliding groove is provided in the length direction of the longitudinal groove, and the sliding portion can be slidably arranged in the sliding groove, so that the connecting steel bar is arranged in the longitudinal groove in an inclined state or a horizontal state; a second limiting component is provided in the sliding groove, and when the second side slides to the second limiting component, the connecting steel bar is arranged in the longitudinal groove in a horizontal state.

3. The precast concrete element according to claim 1, It is characterized in that It also includes a third longitudinal reinforcement, which is connected to the first side, or the third longitudinal reinforcement is connected to the connecting steel bar and is close to the first side.

4. The precast concrete element according to claim 3, It is characterized in that The third longitudinal reinforcement can be moved so that the connecting reinforcement is arranged in the longitudinal groove in an inclined state or a horizontal state.

5. The precast concrete element according to claim 1, It is characterized in that It also includes a limiting steel bar fixedly arranged in the longitudinal groove, the limiting steel bar is located above the supporting steel bar, and the connecting steel bar moves in the gap between the supporting steel bar and the limiting steel bar.

6. The precast concrete element according to claim 5, It is characterized in that The distance between the supporting steel bar and the limiting steel bar is 0-15 mm larger than the diameter of the connecting steel bar.

7. A precast concrete component, It is characterized in that The precast concrete component comprises any one of claims 1-6.

8. The precast concrete component according to claim 7, It is characterized in that Also included are precast concrete splicing components matching the precast concrete components.

9. The precast concrete component according to claim 8, It is characterized in that The precast concrete splicing component comprises a splicing groove, in which a lap reinforcement having the same height as or lower height than the supporting steel bar is arranged; The sum of the depth of the splicing groove and the depth of the longitudinal groove is greater than or equal to the length of the connecting steel bar.

10. The method for splicing precast concrete components according to claim 7, include: Adjusting the connecting steel bar of the precast concrete member from an inclined state to a horizontal state, and allowing the first side of the connecting steel bar to extend into the connecting member; Concrete is poured into the longitudinal groove to fix the precast concrete member and the connecting member together.

11. The method for splicing precast concrete components according to claim 9, include: Arrange the connection end surface of the precast concrete component and the splicing end surface of the precast concrete splicing component facing each other; Adjusting the connecting steel bar of the precast concrete component from an inclined state to a horizontal state, and placing the first side of the connecting steel bar on the lapped reinforcement; as well as Concrete is poured into the longitudinal groove of the precast concrete component and the splicing groove of the precast concrete splicing component to fix the precast concrete component and the precast concrete splicing component together.

Images