A prefabricated energy-saving building wall and its installation method

Abstract

This application discloses a prefabricated energy-saving building wall and its installation method, relating to the field of prefabricated buildings. The prefabricated energy-saving building wall includes precast wall panels and cast-in-place joints for connecting adjacent precast wall panels. The side of the precast wall panel used to connect to the cast-in-place joint is defined as the connecting side. The connecting side of the precast wall panel is provided with a reinforcing connecting component, which includes several connecting bars. The length direction of the connecting bars is arranged along the height direction of the precast wall panel, and the connecting bars are fixedly connected to each other. The connecting bars include embedded bars and external connecting bars. The embedded bars are embedded in the concrete of the precast wall panel, and the external connecting bars are exposed on the connecting side of the precast wall panel and embedded in the cast-in-place joint. In addition to the connecting force between the cast-in-place joint and the precast wall panel, the connection between the cast-in-place joint and the precast wall panel is strengthened.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prefabricated buildings, in particular to a prefabricated energy-saving building wall and a mounting method. BACKGROUND

[0002] Prefabricated buildings refer to buildings that move a large number of on-site operations in traditional construction methods to factories, process and manufacture building components and accessories (such as floors, wall panels, stairs, balconies, etc.) in factories, and transport them to the construction site. The building is assembled and installed on site by reliable connection methods. Prefabricated buildings have the advantages of energy saving, environmental protection, and short construction period.

[0003] There are several types of prefabricated buildings: panel buildings, block buildings, box buildings, and skeleton panel buildings. Among them, panel buildings are assembled from prefabricated large interior and exterior wall panels, floors, and roof panels. It is also known as large panel building, which is the main type of fully assembled building in industrialized system building.

[0004] When installing prefabricated buildings, the connection between adjacent prefabricated wall panels requires the erection of a formwork, and then the pouring of concrete. When the concrete solidifies, the adjacent prefabricated wall panels can be connected. The concrete of the prefabricated wall panel and the cast-in-place concrete are poured in sequence to form a solidified concrete. The adhesion between the cast-in-place concrete and the prefabricated wall panel concrete is limited, and the connection strength between the cast-in-place concrete and the prefabricated wall panel concrete needs to be improved. SUMMARY

[0005] In order to improve the connection strength between the cast-in-place concrete and the prefabricated wall panel concrete of the prefabricated building, the present application provides a prefabricated energy-saving building wall and a mounting method.

[0006] The prefabricated energy-saving building wall and the mounting method provided by the present application adopt the following technical solutions:

[0007] A prefabricated energy-saving building wall, comprising a prefabricated wall panel and a node cast-in-place strip for connecting adjacent prefabricated wall panels; the side of the prefabricated wall panel for connecting the node cast-in-place strip is defined as the connecting side, and the connecting side of the prefabricated wall panel is provided with a reinforced connection assembly, the reinforced connection assembly comprises a plurality of connecting bars, the length direction of the connecting bars is arranged along the height direction of the prefabricated wall panel, the connecting bars are fixedly connected between them, the connecting bars include embedded bars and external connecting bars, the embedded bars are embedded in the concrete of the prefabricated wall panel, and the external connecting bars are exposed on the connecting side of the prefabricated wall panel. The external connecting bars are embedded in the node cast-in-place strip.

[0008] By adopting the technical scheme, the joint area between the two adjacent prefabricated wallboards is formed into a joint cast-in-place strip by pouring concrete, thereby realizing the connection of the two adjacent prefabricated wallboards. After the concrete of the joint cast-in-place strip solidifies, the outer connecting rib of the reinforcing connection assembly is wrapped, the outer connecting rib is fixedly connected with the embedded rib, and the embedded rib is embedded in the concrete of the prefabricated wallboard. In addition to the adhesive force between the concrete of the joint cast-in-place strip and the concrete of the prefabricated wallboard, the joint cast-in-place strip and the prefabricated wallboard also have the connecting force between the outer connecting rib and the embedded rib, thereby facilitating the reinforcement of the connection between the joint cast-in-place strip and the prefabricated wallboard and preventing the interface between the joint cast-in-place strip and the prefabricated wallboard from cracking. Two symmetrical concave areas are formed between the surface of the connecting side of the outer connecting rib and the prefabricated wallboard. When the concrete of the joint cast-in-place strip solidifies, the concrete of the joint cast-in-place strip is embedded in the concave area between the outer connecting rib and the prefabricated wallboard, so that the concrete of the joint cast-in-place strip can tightly hold the outer connecting rib.

[0009] Optionally, the connecting rib is provided with four, and the four connecting ribs are distributed in a quadrilateral shape. Three of the four connecting ribs are embedded ribs, and one is an outer connecting rib.

[0010] By adopting the technical scheme, the embedded rib is provided with three, which facilitates the increase of the connection strength between the reinforcing connection assembly and the prefabricated wallboard. On the other hand, during the process of processing the prefabricated wallboard, the outer connecting rib and the concrete of the prefabricated wallboard are shielded by the two opposite embedded ribs, so that the outer connecting rib and the concrete of the prefabricated wallboard can be easily separated.

[0011] Optionally, the reinforcing connection assembly further comprises a center positioning member, and the center positioning member comprises a center steel wire and a plurality of separation pieces. Each group of separation pieces is provided with four, and the four separation pieces in the same group are arranged in a circumferential array along the axis of the center steel wire. Each separation piece is located between two adjacent connecting ribs, and the two adjacent connecting ribs are fixedly welded.

[0012] By adopting the technical scheme, the separation pieces of the center positioning member can separate the two adjacent connecting ribs, thereby facilitating the position of the four connecting ribs to be easily kept stable. The relative position of the adjacent connecting ribs is not easy to change during welding, and the four connecting ribs are not easy to twist, thereby facilitating the shape of the reinforcing connection assembly to be kept regular, and further facilitating the relative position between the outer connecting rib and the concrete of the prefabricated wallboard to be easily controlled.

[0013] Optionally, a plurality of outrigger steels are arranged at intervals along the height direction of the connecting side of the prefabricated wallboard, and a support steel is connected between the outrigger steel and the outer connecting rib.

[0014] By adopting the technical scheme, the outer connecting steel bars are connected with the outer projecting steel bars through the supporting steel bars, the structural stability of the outer connecting steel bars can be improved, and the connecting strength between the outer connecting steel bars and the concrete of the node cast-in-place belt can be improved.

[0015] Optionally, each of the outer projecting steel bars corresponds to two supporting steel bars, the supporting steel bars are oppositely inclined with the outer connecting steel bars, and the two supporting steel bars corresponding to the same binding reinforcement and the outer connecting steel bars form a triangular area.

[0016] By adopting the technical scheme, the two supporting steel bars and the corresponding outer connecting steel bars form a triangular area, the triangular structure has high structural stability, and the structural stability of the outer connecting steel bars can be further improved.

[0017] Optionally, the four connecting steel bars form an elongated gap, and the prefabricated energy-saving building wall further comprises a bottom positioning member, the bottom positioning member comprises a bottom plate and a positioning steel spike, the bottom plate is provided with a plurality of insertion holes for inserting the reserved steel bars, and the positioning steel spike is inserted into the gap.

[0018] By adopting the technical scheme, in the process of hoisting the prefabricated wall plate, the reserved steel bars need to be aligned and inserted into the positioning sleeve at the bottom of the prefabricated wall plate; in this process, the positioning steel spike of the bottom positioning member cooperates with the gap formed by the connecting steel bars to play the function of assisting in positioning the prefabricated wall plate, and since the gap formed by the connecting steel bars is close to the side surface of the prefabricated wall plate, it is relatively convenient to observe, and the positioning of the prefabricated wall plate is more convenient.

[0019] Optionally, an end of the positioning steel spike away from the bottom plate is provided with a spherical end head, a lower end surface of the outer connecting steel bar is provided with an inclined surface, and the lower end surface of the connecting steel bar is inclined towards the gap.

[0020] By adopting the technical scheme, the spherical end head at the top end of the positioning steel spike can guide the process of inserting the positioning steel spike into the gap, so that the positioning steel spike is more easily inserted into the gap. The top end of the positioning steel spike is provided with a spherical end head, which can reduce the situation that the end of the positioning steel spike scratches the skin of the worker; the lower end surface of the outer connecting steel bar is provided with an inclined surface, which can guide the top end of the positioning steel spike during the process of inserting the spherical end head of the top end of the positioning steel spike into the gap, so that the top end of the positioning steel spike is more easily inserted into the gap.

[0021] Optionally, a lower end surface of the embedded steel bar is flush with a lower surface of the prefabricated wall plate, and a lower end of the outer connecting steel bar is higher than the lower end surface of the embedded steel bar.

[0022] By adopting the technical scheme, the lower end surface of the embedded steel bar is flush with the lower surface of the prefabricated wall panel, and in the process of processing the prefabricated wall panel, the lower end of the embedded steel bar can hinder the flowing of the un-solidified concrete into the gap, and help to keep the inner side of the gap clean.

[0023] Optionally, the top end of the steel drill rod is provided with at least two inclined pull wires, the inclined pull wires have plasticity, the two inclined pull wires are symmetrically arranged along the axis of the steel drill rod, and the ends of the inclined pull wires away from the steel drill rod are connected to the bottom plate.

[0024] By adopting the technical scheme, the two inclined pull wires connecting the top end of the steel drill rod and the bottom plate can constrain the top end of the steel drill rod, so that the position of the top end of the steel drill rod remains stable, that is, the relative position between the top end of the steel drill rod and the insertion hole can remain stable. Thus, when the prefabricated panel is hoisted, the steel drill rod can be more easily aligned with the gap. The inclined pull wires have plasticity, and when the inclined pull wires are inserted into the gap along with the top end of the steel drill rod, the inclined pull wires can be adaptively deformed under the extrusion of the inner wall of the gap.

[0025] A mounting method of a prefabricated energy-saving building wall comprises the following steps:

[0026] Measuring and laying out a line, correcting a deviated embedded steel bar, installing a bottom positioning member to the embedded steel bar, hoisting a prefabricated wall panel, inserting a positioning steel drill rod of the bottom positioning member into a gap formed by each connecting steel bar, hoisting and positioning the prefabricated wall panel, installing an inclined support, continuing to install other outer wall panels in sequence, caulking the bottom of the prefabricated wall panel, performing a grouting operation, and pouring concrete in a node area.

[0027] By adopting the technical scheme, in the process of hoisting the prefabricated wall panel, the positioning steel drill rod of the bottom positioning member is positioned by being inserted into the gap formed by each connecting steel bar, so that the embedded steel bar can be more easily inserted into the positioning sleeve of the prefabricated wall panel. The gap is close to the side surface of the prefabricated wall panel, so that the cooperation between the positioning steel drill rod and the gap is more easily observed, the positioning of the prefabricated wall panel is more convenient, and the hoisting efficiency of the prefabricated wall panel is improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. The node area between the two adjacent prefabricated wall panels is formed into a node cast-in-place zone by pouring concrete. In addition to the adhesion between the concrete of different solidification times, the node cast-in-place zone and the prefabricated wall panel also have the connection between the outer connecting steel bar and the embedded steel bar, so as to facilitate the strengthening of the connection between the node cast-in-place zone and the prefabricated wall panel.

[0030] 2. In the process of hoisting the prefabricated wallboard, the reserved steel bars need to be aligned and inserted into the positioning sleeve at the bottom of the prefabricated wallboard. In this process, the positioning steel bar of the bottom positioning member cooperates with the gap formed by the connecting bars to play the role of auxiliary positioning of the prefabricated wallboard. Since the gap formed by the connecting bars is close to the side surface of the prefabricated wallboard, it is relatively easy to observe, making the positioning of the prefabricated wallboard more convenient.

[0031] 3. The two inclined pull wires connecting the top end of the steel bar and the bottom plate can constrain the top end of the steel bar, so that the position of the top end of the steel bar remains stable, that is, the relative position between the top end of the steel bar and the insertion hole can remain stable. Thus, when the prefabricated plate is hoisted, the steel bar can be more easily aligned with the gap. The inclined pull wire has plasticity, and when the inclined pull wire is inserted into the gap along with the top end of the steel bar, the inclined pull wire can adaptively deform under the extrusion of the inner wall of the gap. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the embodiment for embodying the connection relationship between the prefabricated wallboard and the node cast-in-place zone.

[0033] Figure 2 is a structural schematic diagram of the prefabricated wallboard of the embodiment.

[0034] Figure 3 is a schematic diagram of the embodiment for the connection relationship between the connecting bar and the center positioning member.

[0035] Figure 4 is a schematic diagram of the embodiment for embodying the use state of the bottom positioning member.

[0036] Figure 5 is a schematic diagram of the embodiment for embodying the connection relationship between the inclined pull wire and the positioning steel bar.

[0037] Figure 6 is a flowchart of the construction method of the prefabricated wallboard of the embodiment.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1. prefabricated wallboard; 11. cantilevered steel bar; 12. support steel bar; 2. node cast-in-place zone; 3. reinforced connection assembly; 30. connecting bar; 31. outer connecting bar; 311. inclined surface; 32. embedded steel bar; 33. center positioning member; 331. center steel wire; 332. separation piece; 34. gap; 4. bottom positioning member; 41. bottom plate; 411. insertion hole; 42. positioning steel bar; 421. spherical end; 422. through hole; 43. inclined pull wire; 44. hook; 5. reserved steel bar. DETAILED DESCRIPTION

[0040] The following will be described in combination with the accompanying Figures 1-6Further details of the application are described below.

[0041] The embodiment of the application discloses an assembled energy-saving building wall and a mounting method. Figure 1 and Figure 2 The assembled energy-saving building wall and the mounting method comprise prefabricated wallboards 1 and node cast-in-place belts 2 for connecting adjacent prefabricated wallboards 1; the side of the prefabricated wallboard 1 for connecting the node cast-in-place belt 2 is defined as a connecting side, the connecting side of the prefabricated wallboard 1 is provided with a reinforced connecting assembly 3, the reinforced connecting assembly 3 comprises four connecting ribs 30, the four connecting ribs 30 are distributed in a quadrilateral shape, adjacent connecting ribs 30 are welded and fixed, the length direction of the connecting rib 30 is arranged along the height direction of the prefabricated wallboard 1, the connecting ribs 30 are fixedly connected, the connecting rib 30 comprises an outer connecting rib 31 and three embedded ribs 32, the embedded rib 32 is embedded in the concrete of the prefabricated wallboard 1, the outer connecting rib 31 is exposed to the connecting side of the prefabricated wallboard 1, and the outer connecting rib 31 is embedded in the node cast-in-place belt 2.

[0042] The node area between the two adjacent prefabricated wallboards 1 is formed by pouring concrete to form the node cast-in-place belt 2, the concrete of the node cast-in-place belt 2 is wrapped around the outer connecting rib 31 after solidification, the outer connecting rib 31 is welded and fixed with the embedded rib 32, and the embedded rib 32 is embedded in the concrete of the prefabricated wallboard 1. In addition to the adhesion of the concrete that solidifies in sequence between the node cast-in-place belt 2 and the prefabricated wallboard 1, the node cast-in-place belt 2 and the prefabricated wallboard 1 are also connected by the connecting rib 30, which is beneficial to reduce the splitting of the interface between the node cast-in-place belt 2 and the prefabricated wallboard 1.

[0043] In another embodiment, the number of connecting ribs 30 is two, the connecting rib 30 comprises one embedded rib 32 and one outer connecting rib 31, and the embedded rib 32 and the outer connecting rib 31 are symmetrical along the surface of the connecting side of the prefabricated wallboard 1.

[0044] Referring to Figure 2 The reinforced connecting assembly 3 further comprises a center positioning member 33, the center positioning member 33 comprises a center steel wire 331 and a plurality of separation sheets 332, the separation sheet 332 is a thin steel sheet or a steel wire mesh sheet, the separation sheet 332 is welded and fixed with the center steel wire 331, each group of separation sheets 332 is provided with four, the four separation sheets 332 in the same group are arranged in a circumferential array along the axis of the center steel wire 331, each separation sheet 332 is located between the two adjacent connecting ribs 30, and the two adjacent connecting ribs 30 are welded and fixed. Before the embedded rib 32 and the outer connecting rib 31 are welded, the embedded rib 32 and the outer connecting rib 31 are connected by steel wire binding to keep the positions of the embedded rib 32 and the outer connecting rib 31 stable, so as to facilitate the welding and fixing.

[0045] The adjacent connecting bars 30 are separated by thin steel sheets, which can keep the relative position of each connecting bar 30 stable and keep the overall reinforcing connection assembly 3 straight and regular, thereby making it easier to control the relative position between the outer connecting bar 31 and the concrete of the precast wall panel 1.

[0046] Reference Figure 1 Multiple cantilevered reinforcing bars 11 are spaced apart along the height direction on the connecting side of the precast wall panel 1. Supporting reinforcing bars 12 connect the cantilevered reinforcing bars 11 to the external connecting bars 31. Each cantilevered reinforcing bar 11 corresponds to two supporting reinforcing bars 12. The supporting reinforcing bars 12 and the external connecting bars 31 are inclined relative to each other, and the two supporting reinforcing bars 12 corresponding to the same binding reinforcement and the external connecting bars 31 together form a triangular area. The external connecting bars 31 are connected to the cantilevered reinforcing bars 11 through the supporting reinforcing bars 12, which enhances the structural stability of the external connecting bars 31 and improves the connection strength between the external connecting bars 31 and the cast-in-place joint 2.

[0047] Reference Figure 3 Four connecting ribs 30 enclose a narrow gap 34. The central steel wire 331 of the central positioning component 33 is located inside the gap 34. The upper end of the central steel wire 331 extends to the upper surface of the precast wall panel 1, and the lower end of the central steel wire 331 is higher than the lower end of the embedded rib 32, so that the lower part of the gap 34 remains empty. The prefabricated energy-saving building wall also includes a bottom positioning component 4. The bottom positioning component 4 includes a base plate 41 and a positioning steel rod 42. The base plate 41 is provided with multiple insertion holes 411 for the insertion of the reserved rib 5. The positioning steel rod 42 is inserted into the gap 34.

[0048] During the hoisting of precast wall panel 1, the steel bars pre-installed on the floor need to be inserted into the positioning sleeve at the bottom of the precast wall panel 1. By setting the bottom positioning component 4, the precast wall panel 1 can be assisted in positioning by utilizing the cooperation between the positioning steel rod 42 of the bottom positioning component 4 and the gap 34 enclosed by each connecting bar 30, making the hoisting and positioning of the precast wall panel 1 easier.

[0049] Reference Figure 4 The lower end face of the embedded reinforcing bar 32 is flush with the lower surface of the precast wall panel 1, and the lower end of the external connecting reinforcing bar 31 is higher than the lower end face of the embedded reinforcing bar 32. The end of the positioning steel rod 42 away from the bottom plate 41 is set as a spherical end 421, the lower end face of the external connecting reinforcing bar 31 is set as an inclined surface 311, and the lower end face of the connecting reinforcing bar 30 is inclined towards the gap 34. During the process of the positioning steel rod 42 being inserted upward into the gap 34, the inclined surface 311 at the lower end of the external connecting reinforcing bar 31 and the spherical end 421 at the top of the positioning steel rod 42 can play a guiding role.

[0050] Reference Figure 4 and Figure 5Two diagonal pull wires 43 are attached to the top of the steel rod. These wires can be plastic or metal wires with plasticity. The two wires 43 are symmetrically arranged along the axis of the steel rod, and the plane containing the center line of the two wires 43 is parallel to the connecting side of the precast slab. The top ends of the two wires 43 are integrally connected. The top of the steel rod has a through hole 422 for the wire material of the wires 43 to pass through and be glued together to form the two wires 43. Two hooks 44 are fixedly installed on the base plate 41. The two hooks 44 are located outside the coverage area of ​​the bottom surface of the precast wall panel 1. Each hook 44 corresponds to one of the two wires 43, and the end of the wire 43 furthest from the steel rod is tied to the hook 44.

[0051] The two diagonal tie wires 43 connecting the top of the steel rod and the base plate 41 can constrain the top of the steel rod, making it easy to control the relative position between the top of the steel rod and the insertion hole 411. During the hoisting of the precast slab, the steel rod can be easily aligned with the gap 34. The diagonal tie wires 43 are plastic, and when the diagonal tie wires 43 are inserted into the gap 34 along with the top of the steel rod, the diagonal tie wires 43 can undergo adaptive deformation under the compression of the inner wall of the gap 34.

[0052] The principle of this embodiment of the prefabricated energy-saving building wall is as follows: the node area between two adjacent prefabricated wall panels 1 is formed by pouring concrete to create a node cast-in-place strip 2, thereby connecting the two adjacent prefabricated wall panels 1. After the concrete of the node cast-in-place strip 2 solidifies, it wraps around the outer connecting bar 31 of the reinforcing connection component 3. The outer connecting bar 31 is fixedly connected to the embedded bar 32, which is embedded in the concrete of the prefabricated wall panel 1. This means that in addition to the adhesive force between concrete that has solidified at different times, the node cast-in-place strip 2 and the prefabricated wall panel 1 also have the connecting force between the outer connecting bar 31 and the embedded bar 32. This helps to strengthen the connection between the node cast-in-place strip 2 and the prefabricated wall panel 1, making the interface between the node cast-in-place strip 2 and the prefabricated wall panel 1 less prone to cracking. Two symmetrical concave areas are formed between the outer connecting bar 31 and the surface of the precast wall panel 1 on the connection side. When the concrete of the node cast-in-place strip 2 is solidified, the concrete of the node cast-in-place strip 2 is embedded in the concave area between the outer connecting bar 31 and the precast wall panel 1, which enables the concrete of the node cast-in-place strip 2 to tightly hug the outer connecting bar 31.

[0053] This embodiment also discloses the construction method of the above-mentioned prefabricated energy-saving building wall, referring to... Figure 6 It includes the following steps:

[0054] Step 1: Measure and set out the construction area for the wall;

[0055] Step 2: Correct the skewed reserved steel bar 5, and use a special steel bar positioning plate to check the position and verticality of the steel bar; place shims and use a level to check the elevation;

[0056] Step 3: Install the bottom positioning piece 4 onto the reserved steel bar 5;

[0057] Step 4: Hoist the precast wall panel 1 to a height of about 1 meter above the floor. The operator guides it to descend. The positioning steel rod 42 is inserted into the gap 34 formed by the connecting steel bars 30 to position the precast wall panel 1, so that the reserved steel bars 5 can be quickly aligned with the holes. After the reserved steel bars 5 are correctly aligned with the holes, they are slowly lowered into place.

[0058] Step 5: Install diagonal supports, adjust diagonal supports, and correct the positioning and verticality of precast wall panel 1;

[0059] Step 6: Continue installing the other exterior wall panels in sequence;

[0060] Step 7: Fill the gap at the bottom of the precast wall panel 1; use a snakeskin pipe as a template to fill and seal the gap between the precast wall panel 1 and the installation surface;

[0061] Step 8, Perform grouting operation; Grouting operation is carried out 6 hours after the crack sealing is completed; During grouting operation, stir the grout and perform a fluidity test; Seal the lower row of grouting holes; Insert the grouting pipe to perform grouting; When the grout flows out from the top, seal the upper row of grouting holes one by one; Pull out the grouting pipe nozzle and seal the grouting holes.

[0062] Step 9: Place the hidden column stirrups on the protruding steel bars of the precast wall panel 1 according to the spacing requirements; insert the vertical steel bars from the top and tie the stirrups to the vertical steel bars for fixation; pour the concrete in the joint area.

[0063] During the construction process using the prefabricated energy-saving building wall construction method of this application, the positioning is achieved by interlocking the positioning steel rod 42 of the bottom positioning component 4 with the gap 34 formed by the connecting ribs 30. The gap 34 is close to the side of the prefabricated wall panel 1, which makes the positioning of the prefabricated wall panel 1 more convenient and helps to improve the hoisting efficiency of the prefabricated wall panel 1.

[0064] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated energy-saving building wall, characterized in that, The prefabricated wallboard (1) and the node cast-in-place zone (2) for connecting adjacent prefabricated wallboards (1) are included; the side of the prefabricated wallboard (1) for connecting the node cast-in-place zone (2) is defined as the connecting side, the connecting side of the prefabricated wallboard (1) is provided with a reinforced connecting assembly (3), the reinforced connecting assembly (3) includes a plurality of connecting bars (30), the length direction of the connecting bar (30) is arranged along the height direction of the prefabricated wallboard (1), the connecting bars (30) are fixedly connected, the connecting bar (30) includes a pre-embedded bar (32) and an external connecting bar (31), the pre-embedded bar (32) is embedded in the concrete of the prefabricated wallboard (1), the external connecting bar (31) is exposed on the connecting side of the prefabricated wallboard (1), and the external connecting bar (31) is embedded in the node cast-in-place zone (2); the connecting bar (30) is provided with four, the four connecting bars (30) are distributed in a quadrilateral, three of the four connecting bars (30) are pre-embedded bars (32), and one is an external connecting bar (31); the reinforced connecting assembly (3) further includes a center positioning member (33), the center positioning member (33) includes a center steel wire (331) and a plurality of separation sheets (332), each group of separation sheets (332) is provided with four, the four separation sheets (332) in the same group are arranged in a circumferential array along the axis of the center steel wire (331), each separation sheet (332) is located between two adjacent connecting bars (30), and the two adjacent connecting bars (30) are fixedly welded.

2. The prefabricated energy-saving building wall according to claim 1, characterized in that: The connecting side of the prefabricated wallboard (1) is provided with a plurality of overhanging steel bars (11) arranged at intervals in the height direction, and the overhanging steel bars (11) are connected with the external connecting bars (31).

3. The prefabricated energy-saving building wall according to claim 2, characterized in that: Each overhanging steel bar (11) corresponds to two support steel bars (12), the support steel bars (12) and the external connecting bars (31) are relatively inclined, and the two support steel bars (12) corresponding to the same binding reinforcement and the external connecting bar (31) form a triangular area.

4. The prefabricated energy-saving building wall according to claim 1, characterized in that: The four connecting bars (30) enclose an elongated gap (34); the prefabricated wallboard (1) further includes a bottom positioning member (4), the bottom positioning member (4) includes a bottom plate (41) and a positioning steel drill (42), the bottom plate (41) is provided with a plurality of insertion holes (411), the insertion holes (411) are provided for inserting the reserved steel bars (5), and the positioning steel drill (42) is inserted into the gap (34).

5. The prefabricated energy-saving building wall according to claim 4, characterized in that: The end of the positioning steel drill (42) away from the bottom plate (41) is provided with a spherical end (421), the lower end surface of the external connecting bar (31) is provided with an inclined surface (311), and the lower end surface of the connecting bar (30) is inclined towards the gap (34).

6. The prefabricated energy-saving building wall according to claim 4, characterized in that: The lower end surface of the pre-embedded bar (32) is flush with the lower surface of the prefabricated wallboard (1), and the lower end of the external connecting bar (31) is higher than the lower end surface of the pre-embedded bar (32).

7. The prefabricated energy-saving building wall according to claim 4, characterized in that: The top end of the steel drill rod is provided with at least two inclined pull wires (43), the inclined pull wires (43) have plasticity, the two inclined pull wires (43) are symmetrically arranged along the axis of the steel drill rod, and the end of the inclined pull wire (43) away from the steel drill rod is connected with the bottom plate (41).

8. The mounting method of the fabricated energy-saving building wall according to any one of claims 4-7, characterized in that, The method comprises the following steps: Measuring the line; Correcting the inclined reserved steel bars (5); Installing the bottom positioning member (4) to the reserved steel bars (5); Hoisting the prefabricated wall plate (1), inserting the positioning steel drill rod (42) of the bottom positioning member (4) into the gap (34) formed by the connecting bars, and hoisting and positioning the prefabricated wall plate (1); Installing the inclined support; Continuing to install other outer wall plates in sequence; Sealing the bottom of the prefabricated wall plate (1); Performing grouting work; Pouring the node area concrete.

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