Prefabricated composite wall, prefabricated concrete assembly and splicing method thereof

Abstract

The present invention provides a prefabricated composite wall, a prefabricated concrete assembly and a splicing method thereof. The prefabricated composite wall is formed by a connector and at least two prefabricated panels, including a connecting end, the connecting end including a connecting end face, a receiving portion formed by a gap between walls on both sides of the connecting end, a connecting steel bar received in the receiving portion, and a supporting steel bar fixedly arranged in the receiving portion; the supporting steel bar supports the connecting steel bar, and the connecting steel bar includes a first side close to the connecting end face; 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, and when the connecting steel bar is arranged in the receiving portion in a horizontal state, the first side extends out of the connecting end face. The prefabricated composite wall 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 prefabricated composite wall, a prefabricated concrete component 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. This is a key technology for assembling monolithic structures by connecting steel bars at joints between precast concrete components.

[0004] As a prefabricated building structure system, the composite slab shear wall structure is easy to install and has certain application prospects. In addition, the steel bar formwork integrated structure similar to the composite slab shear wall structure also has good technical advantages. These precast concrete structural components are composed of two precast panels and connecting bars connecting the two precast panels.

[0005] The use of close-joint technology (i.e., the spacing between adjacent prefabricated components is 0 or very small) at the vertical joints of the composite shear wall structure can significantly improve the structural efficiency and benefits. However, the current national standards and local standards in many places require that the distance between the outermost steel truss of the prefabricated wall and the side of the prefabricated wall is no more than 250mm. In order to set the horizontal connecting steel bars, the existing structure is to set a vertical post-cast section with a width of no less than 200mm between the prefabricated walls, which makes it difficult to construct close-joint joints. Summary of the invention

[0006] In order to solve one of the problems in the prior art, the first object of the present invention is to provide a prefabricated composite wall. The prefabricated composite wall is formed by a connecting member and at least two prefabricated panels, including a connecting end, the connecting end including a connecting end surface, a receiving portion formed by a gap between the walls on both sides of the connecting end, a connecting steel bar received in the receiving portion, and a supporting steel bar fixedly arranged in the receiving portion; the supporting steel bar supports the connecting steel bar, and the connecting steel bar includes a first side close to the connecting end surface;

[0007] 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.

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

[0009] 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, and a sliding groove is provided in the length direction of the walls on both sides of the connecting end. The sliding portion can be slidably arranged in the sliding groove, so that the connecting steel bar is arranged in the accommodating portion in an inclined state or a horizontal state.

[0010] In some embodiments of the present invention, a first limiting component is provided in the slide groove, and when the second side slides to the first limiting component, the connecting steel bar is arranged in the accommodating portion in a horizontal state.

[0011] In some embodiments of the present invention, the prefabricated composite wall also includes a first longitudinal reinforcement fixedly arranged in the accommodating portion along the length direction of the accommodating portion, the first longitudinal reinforcement is connected to the connecting steel bar, and the connecting steel bar also includes a second side away from the connecting end face, and 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 accommodating portion in an inclined state or a horizontal state.

[0012] 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 accommodating portion in a horizontal state.

[0013] In some embodiments of the present invention, the prefabricated composite wall also includes a second longitudinal reinforcement arranged in the accommodating portion along the length direction of the accommodating portion, and the connecting steel bar also 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 accommodating portion in an inclined state or a horizontal state.

[0014] In some embodiments of the present invention, the prefabricated composite wall further includes a third longitudinal reinforcement, 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 prefabricated composite wall further includes a first transverse reinforcement, the third longitudinal reinforcement and the first transverse reinforcement are located outside the connecting end surface, and the first transverse reinforcement is connected to the third longitudinal reinforcement.

[0016] In some embodiments of the present invention, the prefabricated composite wall further comprises a limiting steel bar fixedly disposed in the accommodating portion, the limiting steel bar being 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 supporting steel bars are transverse bars or U-shaped steel bars.

[0018] A second object of the present invention is to provide a precast concrete assembly comprising the above-mentioned precast composite wall.

[0019] In some embodiments of the present invention, the precast concrete assembly further includes a precast concrete splicing component matched with the precast composite wall.

[0020] In some embodiments of the present invention, the precast concrete splicing component includes a splicing end, and a lap reinforcement having a height equal to or lower than that of the supporting steel bar is provided in the splicing end.

[0021] A third object of the present invention is to provide a method for splicing precast concrete components, comprising:

[0022] Adjusting the connecting steel bars of the prefabricated composite wall from an inclined state to a horizontal state, and allowing the first side of the connecting steel bars to extend into the connecting member;

[0023] Concrete is poured into the accommodating portion to fix the prefabricated composite wall and the connecting member together.

[0024] A fourth object of the present invention is to provide another method for splicing precast concrete components, comprising:

[0025] Arrange the connection end surface of the prefabricated composite wall body and the splicing end surface of the prefabricated concrete splicing component to face each other;

[0026] Adjusting the connecting steel bars of the prefabricated composite wall from an inclined state to a horizontal state, and placing the first side of the connecting steel bars on the reinforcement bars; and

[0027] Concrete is poured into the accommodating portion of the prefabricated composite wall and the splicing ends of the prefabricated concrete splicing components, so that the prefabricated composite wall and the prefabricated concrete splicing components are fixedly connected together.

[0028] The prefabricated composite wall of the present invention has a simple structure. The connecting steel bars are installed in the gap between the two prefabricated panels of the prefabricated composite wall, which does not interfere with the production of prefabricated concrete components. 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 accommodating part, 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.

[0029] 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 prefabricated composite wall or the connecting steel bar; thus, the installation of the connecting steel bar has adaptability. This feature facilitates the installation of connecting steel bars between prefabricated composite walls, and is particularly suitable for the installation of connecting steel bars when prefabricated composite walls are closely connected.

[0030] By adopting the technology of the present invention, the connecting steel bar is installed in the prefabricated composite wall on one side of the joint, and then extends into the prefabricated wall 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 accelerating the safety and speed of construction.

[0031] What is particularly important is that even if the distance between the supporting steel bars and the outermost steel trusses of the prefabricated wall and the side of the prefabricated wall is no more than 250 mm, and even if the supporting steel bars are close to the connecting end face of the prefabricated composite wall, connecting steel bars can be set between the walls to achieve a close joint connection of the walls, which greatly improves efficiency and benefits.

[0032] 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

[0033] Figures 1(a) and 1(b) show a prefabricated composite wall provided in an embodiment of the present invention, wherein the connecting steel bars in Figure 1(a) are arranged in an inclined state in the accommodating portion, and the connecting steel bars in Figure 1(b) are arranged in a horizontal state in the accommodating portion.

[0034] Figure 2 A precast concrete splicing component provided by another embodiment of the present invention is shown.

[0035] Figure 3 The figure shows a connecting steel bar provided by an embodiment of the present invention.

[0036] Figure 4 A connecting steel bar provided by another embodiment of the present invention is shown.

[0037] Figure 5 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0038] Figure 6 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0039] Figures 7(a) and 7(b) show a prefabricated composite wall provided by another embodiment of the present invention, wherein the connecting steel bars in Figure 7(a) are arranged in an inclined state in the accommodating portion, and the connecting steel bars in Figure 7(b) are arranged in a horizontal state in the accommodating portion.

[0040] Figure 8 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0041] Fig. 9 The longitudinal reinforcement provided by one embodiment of the present invention is shown.

[0042] Fig.10 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0043] Fig.11 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0044] FIG. 12( a ) and FIG. 12( b ) show a prefabricated composite wall provided by another embodiment of the present invention.

[0045] Fig.13 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0046] Fig.14 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0047] Fig.15 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0048] Fig.16 A prefabricated composite wall provided by another embodiment of the present invention is shown.

[0049] FIG. 17( a ) and FIG. 17 ( b ) show the splicing process of the prefabricated composite wall and the prefabricated concrete splicing components provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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, a flexible connection, 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 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.

[0054] 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.

[0055] FIG. 1( a) and FIG. 1( b) show a prefabricated composite wall 100 provided by the present invention, which is formed by a connector 111 and at least two prefabricated panels 112. In this embodiment, the prefabricated panels 112 are two panels, and an engineering application example of the prefabricated composite wall 100 of this embodiment is a composite panel shear wall, i.e., a double-skin wall. It should be particularly noted that the prefabricated composite wall 100 of the present invention can also be in other shapes, such as T-shaped, L-shaped, etc.

[0056] The prefabricated composite wall 100 includes a connection end (i.e., the end of the prefabricated composite wall connected to other components), and the connection end is provided with a connection end face 121 and a receiving portion 122 formed by the gap between the walls on both sides of the connection end. The connecting steel bar 123 is received in the receiving portion 122. The connecting steel bar in the receiving portion 122 may be one or more. In this embodiment, a plurality of connecting steel bars 123 are provided along the longitudinal length direction of the receiving portion 122. The "receiving" described in the present invention means "partially or entirely located", that is, the connecting steel bar 123 is received in the receiving portion 122 means that the connecting steel bar 123 is partially or entirely located in the receiving portion 122. Among them, the connecting steel bar 123 includes a first side 123a close to the connection end face 121. The connecting steel bar 123 in this embodiment is a rectangular steel bar ring, so it also has a second side 123b away from the connection end face. It should be noted that the connecting steel bar 123 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.

[0057] The supporting steel bar 124 supports the connecting steel bar 123. In this embodiment, the supporting steel bar 124 is a transverse bar, which is fixedly arranged in the accommodating portion 122. The supporting steel bar 124 can be a separately arranged steel bar, or can be a steel bar of the connecting member 111. The connecting steel bar 123 can move in the accommodating portion 122, so that it can be arranged in the accommodating portion 122 in an inclined state (Figure 1(a)) or a horizontal state (Figure 1(b)). When the connecting steel bar 123 is arranged in the accommodating portion 122 in an inclined state, the first side 123a is located in the accommodating portion 122; when the connecting steel bar 123 is arranged in the accommodating portion 122 in a horizontal state, the first side 123a extends out of the connecting end surface 121. It should be noted that, in other embodiments of the present invention, when the connecting steel bar 123 is arranged in an inclined state in the accommodating portion 122, the first side 123a is located outside the connecting end face 121; when the connecting steel bar 123 is arranged in a horizontal state in the accommodating portion 122, the first side 123a extends to a greater length outside the connecting end face 121.

[0058] The connecting steel bar 123 is installed after the concrete part of the prefabricated composite wall 100 is made, which facilitates the production of the prefabricated composite wall 100. In this embodiment, in the transportation state, the connecting steel bar 123 is arranged in the accommodating portion 122 in an inclined state. During construction, the connecting steel bar 123 can be adjusted to a horizontal state, which is very convenient. Since the connecting steel bar 123 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 123 to a horizontal state.

[0059] In the embodiment shown in FIG. 1( a ) and FIG. 1( b ), the other end of the prefabricated composite wall 100 opposite to the connection end is also provided with a receiving portion, but the receiving portion is not provided with a connecting steel bar, so the prefabricated composite wall 100 can be spliced ​​together in pairs without other splicing components. Of course, the prefabricated composite wall 100 can also be spliced ​​together with cast-in-place concrete, or can also be spliced ​​with Figure 2 The precast concrete splicing components 200 shown are spliced ​​together. The joint width between the precast composite wall 100 and the precast concrete splicing component 200 can be 0-20 mm, that is, the precast composite wall 100 and the precast concrete splicing component 200 adopt the close joint technology; the joint width between the precast composite wall 100 and the precast concrete splicing component 200 can also be greater than 20 mm; preferably, the precast composite wall 100 and the precast concrete splicing component 200 are close joints.

[0060] The precast concrete splicing component 200 includes a splicing end, in which a bridging bar 201 having the same height as or slightly lower than the supporting steel bar 104 is provided (the height of the adjacent precast composite wall 100 and the precast concrete splicing component 200 refers to the height when both are installed in place). In other embodiments of the present invention, it can also be of other types, such as holes or grooves. When splicing with cast-in-place concrete, the connecting steel bar 123 of the precast composite wall 100 is adjusted from an inclined state to a horizontal state, so that the first side 123a of the connecting steel bar 123 extends out of the connecting end surface 121 and extends into the connecting component made of cast-in-place concrete, and concrete is poured into the accommodating portion, so that the precast composite wall 100 and the connecting component are fixedly connected together to form a precast concrete assembly.

[0061] When splicing with the precast concrete splicing component 200, the connection end face 121 of the precast composite wall 100 is arranged to face the splicing end face of the precast concrete splicing component 200; the connection steel bar 123 of the precast composite wall 100 is adjusted from an inclined state to a horizontal state, so that the first side 123a of the connection steel bar 123 extends out of the connection end face 121 and is placed on the reinforcement 201 or under the reinforcement 201; because the connection steel bar 123 has a tendency to change from an inclined state to a horizontal state under its own weight, the indirect disturbance is also The connecting steel bar 123 can be adjusted to a horizontal state; even if the joint width between the precast concrete splicing component 200 and the precast composite wall 100 is 0, resulting in no operating space and no direct contact with the connecting steel bar, the connecting steel bar 123 can be adjusted from an inclined state to a horizontal state by disturbing it, such as vibrating the precast composite wall 100; the connecting steel bar 123 connecting the precast concrete splicing component 200 and the precast composite wall 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 space between the precast panels 112 of the precast composite wall 100 and the precast concrete splicing component 200, so that the precast composite wall 100 and the precast concrete splicing component 200 are fixedly connected together to form a precast concrete assembly.

[0062] like Figure 3 , Figure 5 As shown, the second side 123b of the connecting steel bar 123 of the prefabricated composite wall 100 shown in Figures 1(a) and 1(b) may include a sliding portion A. In this case, a sliding groove 122a is provided in the length direction of the receiving portion 122. The sliding portion A is slidably disposed in the sliding groove 122a, so that the connecting steel bar 123 is disposed in the receiving portion 122 in an inclined state or a horizontal state.

[0063] Figure 3 The middle sliding part A is connected to the connecting steel bar 123 separately. Figure 4 The middle sliding portion A1 is formed by extending the second side 103 b of the connecting steel bar 123 .

[0064] Figure 6 The slide groove 122b in another embodiment of the present invention is shown, and the slide groove 122b is provided with a second limiting component B. When the second side 123b slides to the second limiting component B, the connecting steel bar 123 is arranged in the receiving portion 122 in a horizontal state (the shaded part in the figure is a cross-section of the concrete to facilitate the display of the second limiting component B).

[0065] The slide grooves 122a and 122b enable the second side 123b of the connecting steel bar 123 to have a specified position, thereby ensuring that the position of the connecting steel bar 123 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 prefabricated composite wall 100 is a fixed value when the connecting steel bar is adjusted to a horizontal state, etc.; in particular, the longitudinal reinforcement that is not connected to the connecting steel bar can also achieve controllable position of the connecting steel bar 123.

[0066] As shown in Fig. 7(a) and Fig. 7(b), the prefabricated composite wall 100 shown in Fig. 1(a) and Fig. 1(b) may further include a first longitudinal reinforcement 125. The first longitudinal reinforcement 125 is disposed in the receiving portion 122 along the length direction of the receiving portion 122, and the connecting reinforcement 123 is connected to the first longitudinal reinforcement 125. In this embodiment, the first longitudinal reinforcement 125 is disposed in the receiving portion 122, for example, connected to the connecting member 111. The second side 123b of the connecting reinforcement 123 away from the connecting end face 121 can move up and down along the length direction of the first longitudinal reinforcement 125, so that the connecting reinforcement 123 is disposed in the receiving portion 122 in an inclined state (Fig. 7(a)) or a horizontal state (Fig. 7(b)).

[0067] The first longitudinal rib 125 may be provided with a first limiting component (not shown in the figure), and when the second side 123b moves to the first limiting component, the connecting steel bar 123 is horizontally arranged in the accommodating portion 122. The first limiting component is used to position the connecting steel bar 123 to prevent the connecting steel bar 123 from sliding downward.

[0068] like Figure 8 As shown, the prefabricated composite wall 100 shown in FIG. 1 may further include a second longitudinal reinforcement 126. The second longitudinal reinforcement 126 is disposed in the accommodating portion 122 along the length direction of the accommodating portion 122. In this embodiment, the second longitudinal reinforcement 126 is movably disposed in the accommodating portion 122. The second longitudinal reinforcement 126 is connected to the second side 123b of the connecting steel bar 123 away from the connecting end surface 121. The second longitudinal reinforcement 126 can move up and down, so that the connecting steel bar 123 is disposed in the accommodating portion 122 in an inclined state or a horizontal state. That is, by pulling the upper end (or lower end) of the second longitudinal reinforcement 126 away from the prefabricated composite wall 100, the connecting steel bar 123 is driven to be in an inclined state; by moving the upper end (or lower end) of the second longitudinal reinforcement 126 toward the prefabricated composite wall 100, the connecting steel bar 123 is driven toward a horizontal state until it is in a horizontal state. In this way, the connecting steel bar 123 and the second longitudinal steel bar 126 are linked, and the connecting steel bar 123 can be adjusted to a desired position without directly contacting the connecting steel bar 123, which is convenient for setting the connecting steel bar; and in actual engineering, 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. The adjustment range of the connecting steel bar 123 is not large, and the second longitudinal steel bar 126 can be connected to the connecting piece 111, for example, by connecting with a steel wire of a certain length, or by using a ring to sleeve the second longitudinal steel bar 126 and the connecting piece 111 together.

[0069] A limiting component (such as Fig. 9 The third limiting component 126a shown in the figure can be a short steel bar). When the second longitudinal bar 126 is dragged, the third limiting component 126a can hook the connecting steel bar 123 to adjust it to an inclined or horizontal state. Of course, the second longitudinal bar can also be fixedly connected to the second side 123b, or connected in other ways, as long as the relevant effect can be achieved.

[0070] Fig.10 Another arrangement of the first longitudinal ribs 125 is shown. Fig.10 In the embodiment, the prefabricated composite wall 100 includes three longitudinal bars 125 (which can also be replaced by second longitudinal bars 126), one of which (125a) is located outside the connecting steel bar 123, and two (125b) are located inside the connecting steel bar 123. Optionally, the two longitudinal bars inside the connecting steel bar 123 are equidistant from the longitudinal bar outside the connecting steel bar 123. The gaps between the three longitudinal bars can be set to be small, just enough to allow the connecting steel bar 123 to move up and down in the gaps. Optionally, the width of the gap (i.e., the horizontal distance) is 0-10mm larger than the diameter of the connecting steel bar 123. The second longitudinal bar 126 can also be arranged according to Fig.10 The longitudinal reinforcement located outside the connecting steel bar among the three longitudinal reinforcements can be connected to the connecting member 111 on the inside or outside of the connecting member 111. When connected to the outside of the connecting member 111, it can better prevent the connecting member 111 from interfering with the movement of the connecting steel bar 123 (equivalent to setting a track for the connecting steel bar 123).

[0071] like Fig.11 As shown, the prefabricated composite wall 100 shown in FIG. 1(a) and FIG. 1(b) may further include a third longitudinal reinforcement 127 and a first transverse reinforcement 128. The third longitudinal reinforcement 127 is located outside the connection end surface 121, and the third longitudinal reinforcement 127 is connected to the first side 123a. As shown in FIG. 12, the third longitudinal reinforcement 127 may also be connected to the connection reinforcement 123; in this case, the third longitudinal reinforcement 127 may be located inside the annular connection reinforcement 123. The connection may be a fixed connection or a loose connection.

[0072] Fig.11 In the embodiment shown, when the connection is not fixed, the third longitudinal reinforcement 127 can resist the connecting reinforcement 123, so that the connecting reinforcement 123 does not extend out of the receiving portion 122, and is placed in the receiving portion 122 in an inclined state. In this case, during construction, the third longitudinal reinforcement 127 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 reinforcement 123, such as blocking the receiving portion 122 with a rigid plate.

[0073] Fig.11 In the embodiments shown in FIG. 12( a) and FIG. 12( b), when fixedly connected, the third longitudinal reinforcement 127 can move (for example, horizontally or vertically), so that the connecting reinforcement 123 is arranged in the accommodating portion 122 in an inclined state (for example, FIG. 12( a)) or a horizontal state (for example, FIG. 12( b)). Fig.11 In the embodiment shown, in the inclined state, the third longitudinal reinforcement 127 contacts the connection end face 121; in the horizontal state, the third longitudinal reinforcement 127 is away from the connection end face 121. In the embodiment shown in FIG12, the third longitudinal reinforcement 127 is connected to the connection steel bar, and can drive the connection steel bar 123 to rotate around the support steel bar 124 when moving vertically, thereby realizing the inclined state or the horizontal state of the connection steel bar 123. During construction, the state of the connection steel bar 123 can be adjusted by the third longitudinal reinforcement 127, and then spliced ​​with other cast-in-place concrete splicing components or prefabricated splicing components.

[0074] Fig.11 In the illustrated embodiment, the first transverse rib 128 is connected to the third longitudinal rib 127. The length of the first transverse rib 128 is greater than the width of the accommodating portion 122, and plays a role in positioning the third longitudinal rib 127. In this embodiment, there are two first transverse ribs 128, which are located at the upper and lower sides of the third longitudinal rib 127. In other embodiments of the present invention, the first transverse ribs 128 may also be other numbers.

[0075] like Fig.13 As shown, the prefabricated composite wall 100 shown in Figures 1(a) and 1(b) may also include a limiting reinforcement 129 fixedly disposed in the accommodating portion 122. In this embodiment, the limiting reinforcement 129 is also a transverse reinforcement, which is located above the supporting reinforcement 124, and the connecting reinforcement 123 moves in the gap between the supporting reinforcement 124 and the limiting reinforcement 129, thereby switching between an inclined state and a horizontal state. Optionally, the width of the gap (i.e., the distance between the supporting reinforcement 124 and the limiting reinforcement 129) is 0-10 mm (or a larger width) larger than the diameter of the connecting reinforcement 123, so that the connecting reinforcement 123 can move freely. In particular, the supporting reinforcement 124 and the limiting reinforcement 129 clamp the connecting reinforcement 123, which can better control the position of the connecting reinforcement 123.

[0076] In the present invention, the supporting steel bars 124 and the limiting steel bars 129 may also be U-shaped steel bars ( Fig.10 and Fig.14 The middle supporting steel bar 124 is a U-shaped steel bar), or any other shape as long as it can achieve the corresponding supporting and limiting effects.

[0077] In the present invention, the prefabricated composite wall may include one connection end or multiple connection ends, such as Fig.15 As shown; Fig.15 It is an L-shaped cross-section wall, including two connecting sections.

[0078] Fig.16 Another prefabricated composite wall 300 of the present invention is shown, in which the second side 323b of the uppermost connecting steel bar 323 extends out of the component in an inclined state.

[0079] Figures 17(a) and 17(b) show Fig.16 The prefabricated composite wall 300 shown in FIG. Figure 2 The splicing process of the precast concrete splicing component 200 is shown. In FIG. 17 (a), the connecting steel bar 323 is in an inclined state, and in FIG. 17 (b), the connecting steel bar 323 is in a horizontal state and rests on the reinforcement 201.

[0080] The prefabricated composite wall of the present invention has a simple structure and is very convenient to construct.

[0081] 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 prefabricated composite wall, It is characterized in that The invention comprises a connecting piece and at least two prefabricated panels, and also comprises a connecting end, wherein the connecting end comprises a connecting end face, a receiving portion formed by a gap between walls on both sides of the connecting end, a connecting steel bar received in the receiving portion, and a supporting steel bar fixedly arranged in the receiving portion; the supporting steel bar supports the connecting steel bar, and the connecting steel bar comprises a first side close to the connecting end face; Wherein, the connecting steel bar can move in the accommodating portion, so as to be arranged in the accommodating portion in an inclined state or a horizontal state, and when the connecting steel bar is arranged in the accommodating portion in a horizontal state, the first side extends out of the connecting end surface; The connecting steel bar is a rectangular steel bar ring; The prefabricated composite wall also includes a first longitudinal reinforcement fixedly arranged in the accommodation portion along the length direction of the accommodation portion, the first longitudinal reinforcement is connected to the connecting reinforcement, the connecting reinforcement also 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 accommodation portion in an inclined state or a horizontal state, and a first limiting component is provided on the first longitudinal reinforcement. When the second side moves to the first limiting component, the connecting reinforcement is arranged in the accommodation portion in a horizontal state; or The prefabricated composite wall also includes a second longitudinal reinforcement arranged in the accommodating portion along the length direction of the accommodating portion, and the connecting steel bar also 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 accommodating portion in an inclined state or a horizontal state.

2. The prefabricated composite wall according to claim 1, It is characterized in that The connecting steel bar further comprises a second side away from the connecting end surface, the second side comprises a sliding portion, and sliding grooves are provided in the length direction of the two side walls of the connecting end, and the sliding portion can be slidably arranged in the sliding grooves, so that the connecting steel bar is arranged in the accommodating portion in an inclined state or a horizontal state; A first limiting component is provided in the slide groove, and when the second side slides to the first limiting component, the connecting steel bar is arranged in the accommodating portion in a horizontal state.

3. The prefabricated composite wall 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 prefabricated composite wall according to claim 3, It is characterized in that It also includes a first transverse rib, the third longitudinal rib and the first transverse rib are located outside the connecting end surface, and the first transverse rib is connected to the third longitudinal rib.

5. The prefabricated composite wall according to any one of claims 1 to 4, It is characterized in that It also includes a limiting steel bar fixedly arranged in the accommodating portion, 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. A precast concrete component, It is characterized in that It comprises the prefabricated composite wall described in any one of claims 1-5.

7. The precast concrete component according to claim 6, It is characterized in that It also includes prefabricated concrete splicing components matching the prefabricated combined wall.

8. The precast concrete component according to claim 7, It is characterized in that The precast concrete splicing component comprises a splicing end, in which a lap reinforcement having a height equal to or lower than that of the supporting steel bar is arranged.

9. The method for splicing precast concrete components according to claim 6, include: Adjusting the connecting steel bars of the prefabricated composite wall from an inclined state to a horizontal state, and allowing the first side of the connecting steel bars to extend into the connecting member; Concrete is poured into the accommodating portion to fix the prefabricated composite wall and the connecting member together.

10. The method for splicing precast concrete components according to claim 8, include: Arrange the connection end surface of the prefabricated composite wall body and the splicing end surface of the prefabricated concrete splicing component to face each other; Adjusting the connecting steel bars of the prefabricated composite wall from an inclined state to a horizontal state, and placing the first side of the connecting steel bars on the lap bars; as well as Concrete is poured into the accommodating portion of the prefabricated composite wall and the splicing ends of the prefabricated concrete splicing components, so that the prefabricated composite wall and the prefabricated concrete splicing components are fixedly connected together.

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