CN217500692U - Connecting joint for composite heat-insulation single-face superposed wallboard - Google Patents

Abstract

The invention discloses a connecting node for a composite heat-insulation single-face superposed wallboard, which is used for a building outer wall and consists of an inner-side precast concrete wallboard, an outer-side composite heat-insulation board and a tie piece for connecting the inner-side precast concrete wallboard and the outer-side composite heat-insulation board, wherein a cavity is formed in the middle of the composite heat-insulation single-face superposed wallboard. The composite heat-insulation boards of the adjacent composite heat-insulation single-face superposed wallboards are continuous to form a closed space at the connecting position of the longitudinal and transverse walls, so that the formwork-free outer vertical face of the outer wall can be realized, the construction efficiency is improved, and the horizontally distributed reinforcing steel bars of the prefabricated wall directly extend into the vertical post-pouring section to realize the connection of the adjacent prefabricated walls; or when the composite insulation boards of the adjacent composite insulation single-side laminated wall boards are discontinuous, the external independent composite insulation boards are hung to realize that the external vertical surface of the external wall is free from formwork erection, and the horizontally distributed steel bars of the prefabricated wall directly extend into the vertical post-pouring section or are additionally provided with horizontally connected steel bars to realize the connection of the adjacent prefabricated walls. The invention can give consideration to the formwork-free and construction efficiency of the outer vertical surface of the outer wall, and simultaneously ensures the reliability of force transmission of the longitudinal and transverse wall connecting nodes.

Description

Connecting joint for composite heat-insulation single-face superposed wallboard

Technical Field

The invention belongs to the technical field of buildings, relates to a superposed shear wall, and particularly relates to a connecting node for a composite heat-insulation single-face superposed wallboard.

Background

The sandwich heat-insulation superimposed shear wall structure is developed on the basis of a double-sided superimposed shear wall structure, the outer wall of the sandwich heat-insulation superimposed shear wall is a sandwich heat-insulation superimposed shear wall, and the sandwich heat-insulation superimposed shear wall is manufactured by inner and outer leaf precast concrete wallboards, heat-insulation materials, a middle cavity and a tie piece in a factory, so that the building outer wall can be integrated with heat insulation, structure and decoration, meanwhile, the sandwich heat-insulation superimposed shear wall structure has the advantages of low requirement on installation precision of the double-sided superimposed shear wall and easiness in control of connection construction quality, and has certain application in domestic assembly type residential engineering. The outer side of the sandwich heat-insulation superposed shear wall heat-insulation material is generally a prefabricated concrete wallboard with the thickness of 5cm, the prefabricated concrete wallboard is used as a heat-insulation material protective layer and is used as a template during pouring of post-cast concrete of a middle cavity, and the formwork-free outer vertical surface of the outer wall is realized.

The composite heat-insulation single-face superposed wall board is improved and developed on the basis of a sandwich heat-insulation superposed shear wall, a common heat-insulation material of the sandwich heat-insulation superposed shear wall is replaced by a composite heat-insulation board with larger thickness and hardness, the composite heat-insulation board is connected with an inner-side precast concrete wall board through a connecting piece in a pulling mode, the side mold pressure during pouring of later-poured concrete of a middle cavity can be resisted only by the composite heat-insulation board, and the situation that an outer-leaf precast concrete wall board with the thickness of 5cm is additionally arranged on the outer side of the heat-insulation material of the sandwich heat-insulation superposed shear wall is not needed, so that the self weight and the cost of the precast wall can be further reduced, the thickness of a building outer wall is reduced, and the room rate is improved. The existing longitudinal and transverse wall connecting nodes of the sandwich heat-insulation superposed shear wall generally adopt additional horizontal connecting steel bars to realize the lap joint of horizontally distributed steel bars of adjacent prefabricated walls, the vertical steel bars adopt the lap joint, the crossing of the two results in the dense steel bars in the node area, a concrete vibrating rod cannot be inserted when the cavity post-cast concrete is poured, the post-cast concrete cannot be vibrated, and the post-cast concrete cannot be directly used for a composite heat-insulation single-side superposed wallboard; the existing composite heat-preservation single-face superposed wallboard longitudinal and transverse wall connecting node structure is immature, the fully formwork-supporting-free construction of an outer vertical face of an outer wall cannot be realized, the on-site supporting modulus is large, the labor consumption is large, and the advantage of assembly type construction of an assembly type building cannot be embodied.

Disclosure of Invention

In order to overcome the defects of the longitudinal and transverse wall connecting node structure of the existing sandwich heat-insulation superposed shear wall and composite heat-insulation single-side superposed wall board, the invention aims to provide a connecting node for a composite heat-insulation single-side superposed wall board, wherein at the position of the longitudinal and transverse wall connecting node structure of the composite heat-insulation single-side superposed wall board, a composite heat-insulation board of a prefabricated wall extends outwards beyond the end part of a prefabricated concrete wall board at the inner side, and adjacent composite heat-insulation boards of the prefabricated wall continuously enclose a closed space to realize the formwork-free outer vertical surface of an outer wall; or the prefabricated wall composite heat-insulation boards do not extend outwards, are flush with the inner side prefabricated concrete wall board, and the discontinuous areas of the adjacent prefabricated wall composite heat-insulation boards enclose a closed space through the externally-hung independent composite heat-insulation boards, so that the formwork erection of the outer vertical surface of the outer wall is avoided. According to whether the composite heat-insulation boards of the adjacent prefabricated walls directly enclose the closed space continuously or not, the horizontally distributed reinforcing steel bars of the prefabricated walls directly extend into the vertical post-pouring section or are additionally provided with horizontal connecting reinforcing steel bars to realize the connection of the adjacent prefabricated walls, the configuration of the vertical reinforcing steel bars in the vertical post-pouring section and the edge component area of the prefabricated walls is adjusted, the dense reinforcing steel bars in the node area are avoided, and the vibration requirement during cavity post-pouring concrete pouring is met.

In order to achieve the purpose, the invention adopts the technical scheme that:

a connecting node for a composite heat-insulation single-face superposed wallboard is applied to the L-shaped or T-shaped connecting node position of longitudinal and transverse walls of the composite heat-insulation single-face superposed wallboard, the composite heat-insulation single-face superposed wallboard is used for a building outer wall and comprises an inner side precast concrete wallboard, an outer side composite heat-insulation board and a tie piece for connecting the inner side precast concrete wallboard and the outer side composite heat-insulation board, a cavity is formed in the middle of the composite heat-insulation single-face superposed wallboard, and two layers of reinforcing mesh sheets of a shear wall are respectively distributed in the inner side precast concrete wallboard and the middle cavity in the factory production stage. And through-length steel bar trusses are arranged along the height direction of the inner side precast concrete wallboard, the anti-cracking and demolding requirements of the composite heat-insulation single-side laminated wallboard production stage are met, the distance between every two adjacent steel bar trusses is 400-600 mm, the lower chord steel bars of the steel bar trusses are arranged in the precast concrete wallboard, and the upper chord steel bars are positioned in the cavity.

In order to realize the formwork-free construction of the outer vertical surface of the outer wall, two technical schemes are adopted according to the arrangement of the composite heat-insulation boards of the prefabricated wall at the position of the connection node of the longitudinal wall and the transverse wall. The composite heat-insulation board of the composite heat-insulation single-face superposed wallboard exceeds the end part of the inner precast concrete wallboard and continues to extend outwards, and the composite heat-insulation boards of adjacent precast walls directly and continuously enclose a closed space at the connecting node positions of the longitudinal and transverse walls, so that formwork erection of the outer vertical face of the outer wall is avoided. Specifically, the horizontally distributed reinforcing steel bars of the wall plate and the horizontally distributed reinforcing steel bars of the cavity of the composite heat-insulation single-sided laminated wall plate directly extend into the vertical post-pouring section for anchoring, and the connection of the adjacent prefabricated walls is realized after the vertical post-pouring section and the post-poured concrete in the cavity are poured.

Or the composite heat-insulation boards of the composite heat-insulation single-face superposed wall board do not extend outwards and are kept flush with the end parts of the inner precast concrete wall boards, independent composite heat-insulation boards are hung outside discontinuous areas of adjacent precast wall composite heat-insulation boards, and the precast wall composite heat-insulation boards and the independent composite heat-insulation boards jointly enclose a closed space to realize formwork-free of the outer vertical face of the outer wall. Specifically, the horizontally distributed reinforcing steel bars of the wall plate and the horizontally distributed reinforcing steel bars of the cavity of the composite heat-insulation single-face superposed wall plate directly extend into the vertical post-pouring section for anchoring, or the horizontal connecting reinforcing steel bars are penetrated between the vertical post-pouring section and the prefabricated wall to realize the connection of the adjacent prefabricated walls.

Particularly, when the horizontally distributed reinforcing steel bars of the precast concrete wall panel extend into the vertical post-pouring section, the horizontally distributed reinforcing steel bars of the precast concrete wall panel directly extend out of the end part of the precast concrete wall panel and extend into the vertical post-pouring section, or the end part of the precast concrete wall panel is bent at the inner side and extends into a cavity from the inner wall of the precast concrete wall panel, and extends into the vertical post-pouring section through the cavity, so that a rib groove is prevented from being formed on a side mold of the precast concrete wall panel in the production stage.

The composite heat-preservation single-face superposed wallboard longitudinal and transverse wall is connected with an L-shaped or T-shaped node position, all shear wall edge components are located in a vertical post-pouring section area, or the shear wall edge components are composed of a vertical post-pouring section and a prefabricated wall edge component area, unbalanced and differentiated reinforcement design concepts are adopted for vertical reinforcements in the vertical post-pouring section and the prefabricated wall edge component area, small-diameter prefabricated wall edge component vertical reinforcements are arranged in the prefabricated wall edge component area, large-diameter vertical post-pouring section edge component vertical reinforcements are arranged in the vertical post-pouring section, and the total area of the vertical post-pouring section edge component vertical reinforcements and the prefabricated wall edge component vertical reinforcements meets the calculation requirement of the bending resistance bearing capacity of the shear wall.

Specifically, the diameter of the vertical steel bar of the prefabricated wall edge component is the same as that of the vertical distribution steel bar, and the diameter is 8-10 mm; the vertical steel bars of the lower prefabricated wall are bent at the top of the lower prefabricated wall and extend into the cavity of the upper prefabricated wall, and are in lap joint with the vertical steel bars of the upper prefabricated wall, or single rows of additional vertical connecting steel bars are arranged in the cavity and are in lap joint with the vertical steel bars of the lower prefabricated wall and the vertical steel bars of the upper prefabricated wall.

And the vertical steel bars of the edge members of the upper and lower layers of vertical post-cast sections are mechanically connected, and a straight threaded joint is preferably selected.

Particularly, when the composite heat-insulation single-sided laminated wallboard is provided with the opening, the side of the opening of the composite heat-insulation single-sided laminated wallboard is only provided with a prefabricated wall edge component area with a smaller width, and in order to meet the requirements of crack resistance and demoulding in the production stage of the composite heat-insulation single-sided laminated wallboard, a through long steel bar truss is arranged in the middle of the prefabricated wall edge component area along the height direction of the wall. The steel bar truss diagonal web member steel bar is used for replacing an edge member lacing wire, and the diameter of the steel bar truss diagonal web member is not less than 6 mm.

The end parts of the horizontal distribution reinforcing steel bars and the cavity horizontal distribution reinforcing steel bars of the prefabricated wall panel are provided with 135-degree hooks or form a closed ring, so that the lap joint force transmission requirement is realized by a short length.

When the horizontal connecting reinforcing steel bar splicing device is used for the T-shaped node, the horizontal connecting reinforcing steel bar adopts two independent U-shaped reinforcing steel bars, and the U-shaped reinforcing steel bars are respectively in lap joint with the stirrups of the edge members of the vertical post-pouring sections, so that the construction space requirement for penetrating the horizontal connecting reinforcing steel bar in a construction site is reduced, and the penetrating efficiency of the horizontal connecting reinforcing steel bar is improved.

Compared with the prior art, the invention has the beneficial effects that:

(1) the composite insulation board of the composite insulation single-side laminated wallboard extends outwards to form a closed space, or the independent composite insulation boards are hung outside discontinuous areas of the composite insulation boards of the adjacent prefabricated walls to form a closed space, so that formwork supporting-free construction of the outer vertical surface of the outer wall can be realized, the on-site formwork supporting and labor consumption are reduced, and the assembly type construction advantages of an assembly type building can be fully exerted.

(2) According to the invention, unbalanced and differentiated reinforcement design is adopted for the vertical post-pouring section and the vertical reinforcements in the prefabricated wall edge member area, the vertical reinforcements of the prefabricated wall edge member with small diameter are arranged in the prefabricated wall edge member area, the diameter of the vertical reinforcements is the same as that of the vertical distribution reinforcements, lap joint is adopted, the cost is low, the processing is easy, and the reinforcement stress efficiency is high; the vertical post-pouring section is internally provided with a large-diameter vertical post-pouring section edge member vertical steel bar, and the vertical post-pouring section edge member vertical steel bar is mechanically connected with the vertical post-pouring section edge member stirrup to avoid collision.

(3) According to the invention, by optimizing the arrangement and connection mode of the horizontal connecting steel bars and the vertical steel bars in the node area, the steel bar density degree of the node area is greatly reduced, the concrete vibrating rod can be inserted when post-cast concrete is poured in the node area, the construction quality is easy to ensure, and self-compacting concrete with higher cost is not required.

(4) The invention has the advantages of less binding amount of the reinforcing steel bars in the connecting node area, less manual requirement for field reinforcing steel bar binding and capability of greatly improving the field construction efficiency.

Drawings

Fig. 1 is a schematic view of an L-shaped connection node applied to a composite heat-insulating single-sided laminated wallboard, wherein a prefabricated wall composite heat-insulating board is continuous and does not need to be provided with a formwork at the periphery.

Fig. 2 is a three-dimensional schematic view of the prefabricated wall i in fig. 1.

Fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

Fig. 4 is a three-dimensional schematic view of the prefabricated wall two in fig. 1.

Fig. 5 is a schematic cross-sectional view of B-B in fig. 4.

Fig. 6 is a schematic view of the connection structure of the vertical steel bars of the prefabricated wall, wherein the vertical steel bars of the lower prefabricated wall are directly bent and extend into the cavity of the upper prefabricated wall and are in lap joint with the vertical steel bars of the upper prefabricated wall.

Fig. 7 is a schematic view of a connection structure of the vertical steel bars of the prefabricated wall according to the present invention, wherein a single row of additional vertical connecting steel bars are arranged in the cavity to realize lap joint of the vertical steel bars of the prefabricated wall of the upper and lower layers.

Fig. 8 is a modified version of the L-shaped connection node shown in fig. 1, wherein the horizontally distributed reinforcing bars in the precast concrete wall panel are bent to protrude through the cavity.

Fig. 9 is a schematic cross-sectional view of the prefabricated wall i of fig. 8.

Fig. 10 is a schematic cross-sectional view of the prefabricated wall two in fig. 8.

FIG. 11 is a schematic structural view of an L-shaped connecting node of a composite heat-insulating single-face superposed wallboard, wherein a prefabricated wall on one side is a prefabricated wall with a hole.

Fig. 12 is a schematic view of the construction of the T-shaped connection node and node area of the composite heat-insulating single-sided laminated wall panel of the present invention designed as edge members according to the current specifications, wherein the prefabricated wall composite heat-insulating panel is continuous and does not require formwork around the periphery.

Fig. 13 is a schematic cross-sectional view of prefabricated wall three in fig. 12.

Figure 14 is a modified version of the T-shaped connection node of figure 12 wherein horizontally distributed reinforcing bars in a triple wall panel are bent to extend through the cavity.

Fig. 15 is a modified form of the T-shaped connection node of fig. 14, wherein the horizontally distributed reinforcing bars in a wall panel of the prefabricated wall are directly extended.

Fig. 16 is a schematic cross-sectional view of the prefabricated wall i of fig. 15.

Fig. 17 is a schematic structural view of the T-shaped connection node and node area of the composite heat-insulating single-sided laminated wall panel of the present invention designed as edge-constraining members according to the current specifications, wherein the prefabricated wall composite heat-insulating panel is continuous and does not require formwork around the periphery.

FIG. 18 is a modified version of the T-shaped connection node shown in FIG. 17, wherein the restraining edge member area is fully post-cast.

Fig. 19 is a first modification of the T-shaped joint shown in fig. 18, in which horizontally distributed reinforcing bars of the composite heat-insulating single-sided laminated wall panel directly extend into the vertical post-cast section.

Fig. 20 is a second modification of the T-shaped connection node shown in fig. 18, wherein a prefabricated wall three is provided with prefabricated edge element areas.

FIG. 21 is a structural schematic diagram of a T-shaped connecting node of a composite heat-insulating single-sided laminated wallboard applied to a prefabricated wall with a hole.

Fig. 22 is a schematic view of an L-shaped connection node applied to a composite heat-insulating single-sided superimposed wallboard, in which the prefabricated wall composite heat-insulating board is discontinuous and an independent composite heat-insulating board is externally hung on the periphery.

Fig. 23 is a modified version of the L-shaped connection node shown in fig. 22, wherein a small-sized vertical post-cast section is provided only at the area where prefabricated walls meet.

Fig. 24 is a modified version of the L-shaped joint shown in fig. 23, wherein a single reinforcing bar is used to serve as both the vertical post-cast section edge member stirrup and the horizontal connecting bar of fig. 23.

Fig. 25 is a typical structural schematic diagram of the invention applied to an L-shaped connection node of a composite heat-insulating single-sided laminated wallboard, and a prefabricated wall on one side is a prefabricated wall with a hole, wherein the composite heat-insulating board of the prefabricated wall is discontinuous, and an independent composite heat-insulating board is externally hung on the periphery.

Fig. 26 is a typical structural schematic diagram of a T-shaped connection node of a composite heat-insulating single-sided laminated wallboard, in which the prefabricated wall composite heat-insulating board is discontinuous and an independent composite heat-insulating board is externally hung on the periphery.

Fig. 27 is a first modification of the T-shaped connection node shown in fig. 26, in which no horizontally distributed reinforcing steel bars of the composite heat-insulating single-sided laminated wall panel extend out of the prefabricated wall.

Fig. 28 is a modified form of the T-shaped connection node of fig. 27 wherein the three horizontally distributed reinforcing bars of the prefabricated wall do not extend beyond the prefabricated wall.

Fig. 29 is a second modification of the T-shaped connection node of fig. 26, wherein a prefabricated wall section three is provided with prefabricated edge member areas.

Fig. 30 shows a modified form of the T-shaped connection node shown in fig. 29, in which no horizontally distributed reinforcing bars of the composite heat-insulating single-sided laminated wall panel extend beyond the prefabricated wall.

Fig. 31 is a modified form of the T-shaped connection node of fig. 30, wherein the three horizontally distributed reinforcing bars of the prefabricated wall do not protrude from the prefabricated wall.

In the figure: 1-prefabricating a wall I; 11-prefabricating a concrete wall plate; 12-a cavity; 13-steel bar trusses; 14-vertically distributing reinforcing steel bars; 15-horizontally distributing steel bars on the wall plate; 16-horizontally distributing steel bars in the cavity; 17-prefabricating a wall edge member stirrup; 18-prefabricating vertical steel bars of wall edge components; 2-prefabricating a second wall; 21-prefabricated wall edge element area; 22-prefabricated wall body area; 23-prefabricating a wall opening area; 3-prefabricating a third wall; 4-vertical post-pouring section; 41-vertical steel bars of edge members of the vertical post-pouring sections; 42-vertical post-cast section edge member stirrup; 43-vertical post-cast section edge member lacing wire; 44-horizontally connecting the steel bars; 5-composite insulation board; 51-a pull; 52-independent composite insulation board; 6-lower prefabricated wall; 61-lower layer prefabricated wall vertical steel bars; 7-upper prefabricated wall; 71-vertical steel bars of the prefabricated wall on the upper layer; 8-a floor slab; 9-single row of additional vertical connecting steel bars.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

The composite heat-insulation single-face superposed wallboard is used for building external walls and comprises an inner prefabricated concrete wallboard 11, an outer composite heat-insulation board 5 and a tie piece 51 for connecting the inner prefabricated concrete wallboard and the outer composite heat-insulation board, a cavity 12 is formed in the middle of the composite heat-insulation board, and two layers of reinforcing steel meshes of a shear wall are respectively distributed in the inner prefabricated concrete wallboard 11 and the middle cavity 12 in the factory production stage. The through-length steel bar trusses 13 are arranged in the height direction of the inner side prefabricated concrete wall panel 11, the requirements of crack resistance and demolding in the production stage of the composite heat-insulation single-face composite wall panel are met, the reliable pulling of post-cast concrete in the prefabricated concrete wall panel 11 and the cavity 12 is achieved, the distance between every two adjacent steel bar trusses 13 is 400-600 mm, the lower chord steel bars of the steel bar trusses 13 are arranged in the prefabricated concrete wall panel 11, and the upper chord steel bars are located in the cavity 12.

Fig. 1 to 5 provide a first preferred embodiment of the L-shaped connecting node of the longitudinal and transverse walls, according to the first preferred embodiment of the invention, the composite heat-insulating boards 5 of the prefabricated wall 1 and the prefabricated wall 2 exceed the end parts of the prefabricated concrete wall boards 11 on the inner sides and continue to extend outwards, and a closed space is continuously enclosed at the connecting node positions of the longitudinal and transverse walls, so that formwork-free of the outer vertical surface of the outer wall is realized. The shear wall edge member consists of a vertical post-pouring section 4 and a prefabricated wall edge member area 21 of a prefabricated wall I1, the edge member range meets the relevant regulations of the existing specification building earthquake-resistant design specification, high-rise building concrete structure technical specifications, unbalanced and differentiated reinforcement design concepts are adopted for the vertical reinforcements 41 of the vertical post-pouring section edge member and the vertical reinforcements 18 of the prefabricated wall edge member, the diameter of the vertical reinforcements 18 of the prefabricated wall edge member arranged in the prefabricated wall edge member area 21 is the same as that of the vertical distribution reinforcements 14 and is 8-10mm, the diameter of the vertical post-pouring section edge member vertical reinforcements 41 is larger than that of the vertical post-pouring section edge member vertical reinforcements not less than 14mm, and the total area of the vertical post-pouring section edge member vertical reinforcements 41 and the prefabricated wall edge member vertical reinforcements 18 meets the bending resistance bearing capacity calculation requirements of the shear wall. The diameters and structures of the prefabricated wall edge component stirrup 17, the vertical post-cast section edge component stirrup 42 and the vertical post-cast section edge component lacing wire 43 meet the relevant regulations of the existing specification building earthquake resistance design specification high-rise building concrete structure technical specification to ensure the stirrup restraint effect of concrete.

As shown in fig. 1 to fig. 3, a prefabricated wall edge member area 21 of the prefabricated wall 1 is provided with prefabricated wall edge member stirrups 17, the wall plate horizontal distribution reinforcements 15, the cavity horizontal distribution reinforcements 16 of the prefabricated wall 1 and the prefabricated wall edge member stirrups 17 are bound and overlapped in the prefabricated wall edge member area 21, and the prefabricated wall edge member stirrups 17 directly extend out of the end of the prefabricated wall 1 from the end of the prefabricated concrete wall plate 11 and extend into the vertical post-cast section 4 for anchoring.

As shown in fig. 1, 4 and 5, the second prefabricated wall 2 has no prefabricated wall edge component area 21 and is completely a prefabricated wall body area 22, the horizontal distribution reinforcing steel bars 15 of the second prefabricated wall 2 directly extend out of the end part of the first prefabricated wall 2 from the end part of the prefabricated concrete wall 11 and extend into the vertical post-pouring section 4, the horizontal distribution reinforcing steel bars 16 of the cavity and the horizontal distribution reinforcing steel bars 15 of the wall plate extend into the vertical post-pouring section 4, the horizontal connection reinforcing steel bars 44 are connected with the horizontal distribution reinforcing steel bars 15 of the second prefabricated wall 2 and the horizontal distribution reinforcing steel bars 16 of the cavity in an overlapping manner between the vertical post-pouring section 4 and the second prefabricated wall 2, the overlapping length meets the force transmission requirement, and the reliable connection of the first prefabricated wall 1 and the second prefabricated wall 2 is realized after the post-pouring concrete in the vertical post-pouring section 4 and the cavity 12 is poured.

Particularly, 135-degree hooks are arranged at one ends, extending into the vertical post-cast section 4, of the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 of the second prefabricated wall 2, so that the overlapping length of the wall plate horizontal distribution reinforcing steel bars 15, the cavity horizontal distribution reinforcing steel bars 16 and the horizontal connecting reinforcing steel bars 44 is reduced, the length of the horizontal connecting reinforcing steel bars 44 and the length of the horizontal connecting reinforcing steel bars 44 extending into the second prefabricated wall 2 are further reduced, and the horizontal connecting reinforcing steel bars 44 can be conveniently inserted in a construction site.

The site construction sequence of the first preferred embodiment is as follows: installing a prefabricated wall I1 and a prefabricated wall II 2, and adjusting the verticality and the levelness of the prefabricated walls; binding vertical post-cast section edge member stirrups 42 and horizontal connecting reinforcements 44 by means of wall plate horizontal distribution reinforcements 15 and cavity horizontal distribution reinforcements 16 extending from the prefabricated wall II 2; vertical steel bars 41 of edge members of the vertical post-cast sections are penetrated from the inner sides, close to the prefabricated wall I1, of the vertical post-cast sections 4, and steel bar joint connection is completed; binding a vertical post-pouring section edge member lacing wire 43; erecting a building inner side template of the vertical post-pouring section 4, pouring post-pouring concrete in the vertical post-pouring section 4 and the cavity 12 to realize connection of the prefabricated wall I1 and the prefabricated wall II 2, and maintaining and removing the template.

In the aspect of connecting the vertical steel bars of the upper layer and the lower layer, the vertical steel bars 41 of the edge members of the vertical post-cast sections of the upper layer and the lower layer are mechanically connected, and preferably, straight threaded joints are selected. For the vertical steel bars 18 and the vertically distributed steel bars 14 of the prefabricated wall edge component with small diameter, as shown in fig. 6, the vertical steel bars 61 of the lower prefabricated wall are bent at the top of the lower prefabricated wall 6, penetrate through the floor slab 8 and extend into the cavity 12 of the upper prefabricated wall 7, and are in lap joint with the vertical steel bars 71 of the upper prefabricated wall, particularly, the vertical steel bars 61 of the lower prefabricated wall in the prefabricated concrete wall panel 11 are bent at the inner side of the end part of the prefabricated concrete wall panel 11, extend into the cavity 12 from the inner wall of the prefabricated concrete wall panel 11 and extend out of the cavity 12, so that rib grooves are prevented from being formed in the side mold of the prefabricated concrete wall panel 11 in the production stage, the standardization degree of the side mold is improved, and the service life of the side mold is prolonged; or, as shown in fig. 7, a single row of additional vertical connecting steel bars 9 is arranged in the cavities 12 of the lower prefabricated wall 6 and the upper prefabricated wall 7 and is respectively connected with the vertical steel bars 61 of the lower prefabricated wall and the vertical steel bars 71 of the upper prefabricated wall in a lap joint manner, so that the connection between the lower prefabricated wall 6 and the upper prefabricated wall 7 is realized, and the area of the single row of additional vertical connecting steel bars 9 should not be smaller than that of the vertical steel bars 61 of the lower prefabricated wall. When the lap joint is adopted, the lap joint length meets the requirement of lap joint force transmission of the steel bars.

Fig. 8 to 10 show an improved version of the first preferred embodiment shown in fig. 1, which is specifically improved in that the stirrup 17 of the prefabricated wall edge member of the prefabricated wall 1 and the horizontally distributed reinforcing steel bars 15 of the prefabricated wall 2 are bent at the inner side of the end of the prefabricated concrete wall 11 and extend into the vertical post-cast section 4 from the inner wall of the prefabricated concrete wall 11 through the cavity 12, and unlike the prefabricated wall 11 directly extending from the end of the prefabricated concrete wall in fig. 1, the prefabricated wall 1 and the prefabricated wall 2 can avoid forming a reinforcing steel bar groove on the side mold of the prefabricated concrete wall 11 in the production stage, improve the standardization degree of the side mold, prolong the service life and improve the reuse rate, and the non-reinforced steel bars in the production process can be aligned with the reinforcing steel bar groove on the side mold, thereby improving the production efficiency and reducing the production cost of the prefabricated wall.

Fig. 11 provides a second preferred embodiment of the present invention, which is used for L-shaped joints of longitudinal and transverse walls, the prefabricated wall 1 on one side includes a prefabricated wall opening area 23, and only prefabricated wall edge member areas 21 with smaller width are arranged on the opening side, and in order to meet the requirements of crack resistance and demoulding in the production stage of the prefabricated wall 1, through-length steel bar trusses 13 are arranged in the middle of the prefabricated wall edge member areas 21 along the height direction of the wall body. The reinforcing steel bar 13 diagonal web member reinforcing steel bar replaces the edge member lacing wire, and the diameter of the 13 diagonal web member of the reinforcing steel bar truss is not less than 6 mm. The construction of the vertical post-cast section 4, the precast wall edge member stirrups 17 of the precast wall one 1, the wall plate horizontal distribution reinforcements 15 and the cavity horizontal distribution reinforcements 16 of the precast wall two 2 in fig. 11 is the same as that of the modification of the first preferred embodiment of the present invention shown in fig. 8.

Fig. 12-13 illustrate a third preferred embodiment of the present invention for a vertical and horizontal wall T-shaped node, the node area being designed to construct edge members according to current specifications. The prefabricated wall I1 and the prefabricated wall II 2 are composite heat-insulation single-face superposed wall boards, the prefabricated wall III 3 is an inner wall double-face superposed shear wall, the vertical post-pouring section 4 is rectangular, the range of the vertical post-pouring section is consistent with the range of structural edge components required by the current specification, the composite heat-insulation boards 5 of the prefabricated wall I1 and the prefabricated wall II 2 exceed the end part of the inner prefabricated concrete wall board 11 and continue to extend outwards, a closed space is continuously enclosed at the position of a T-shaped node, and the formwork-free outer vertical face of the outer wall is realized. Prefabricated wall 1, two 2 wallboard horizontal distribution reinforcing bars 15 of prefabricated wall and cavity horizontal distribution reinforcing bar 16 do not all stretch out, realize the lap joint of prefabricated wall 1, two 2 horizontal distribution reinforcing bars of prefabricated wall through horizontal connection reinforcing bar 44. As shown in fig. 13, the wall plate horizontal distribution steel bars 15 of the prefabricated wall three 3 directly extend out from the end of the prefabricated concrete wall plate 11 and extend into the vertical post-cast section 4 for anchoring.

The site operation procedure of the third preferred embodiment is as follows: firstly, a prefabricated wall III 3 is installed, and vertical post-cast section edge member stirrups 42 are bound by means of wall plate horizontal distribution reinforcements 15 extending out of the prefabricated wall III 3; penetrating vertical steel bars 41 of edge members of the vertical post-pouring section, completing connection of steel bar joints, and completing binding of lacing wires 43 of edge members of the vertical post-pouring section; installing a first prefabricated wall 1 or a second prefabricated wall 2, and penetrating horizontal connecting steel bars 44 into the installed first prefabricated wall 1 or second prefabricated wall 2 to ensure that the end parts of the horizontal connecting steel bars 44 do not exceed the range of the vertical post-pouring section 4; installing the last prefabricated wall, moving the horizontal connecting steel bars 44 to the designed position one by one, and binding and positioning the horizontal connecting steel bars with the vertical post-cast section edge member stirrups 42; erecting a building inner side template of the vertical post-pouring section 4, pouring post-pouring concrete in the vertical post-pouring section 4 and the cavity 12 to realize the connection of the prefabricated wall I1, the prefabricated wall II 2 and the prefabricated wall III 3, and maintaining and removing the template.

Fig. 14 shows a modification of fig. 12, which is specifically modified in that the wall plate horizontally-distributed reinforcing steel bars 15 of the prefabricated wall three 3 are bent at the inner side of the end part of the prefabricated concrete wall plate 11 and extend into the vertical post-pouring section 4 from the inner wall of the prefabricated concrete wall plate 11 through the cavity 12, so that rib grooves can be prevented from being formed in the side mold of the prefabricated concrete wall plate 11 in the production stage of the prefabricated wall three 3.

Fig. 15 to 16 show the improved form of fig. 14, and the specific improvement lies in that the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 of the prefabricated wall i 1 directly extend into the vertical post-cast section 4 to overlap with the horizontal connecting reinforcing steel bars 44, so that the total length of the horizontal connecting reinforcing steel bars 44 can be reduced on the premise of meeting the requirement of overlapping force transmission, and the field penetration of the horizontal connecting reinforcing steel bars 44 is facilitated. The field construction process comprises the following steps: firstly, mounting a prefabricated wall I1 and a prefabricated wall III 3, and binding vertical post-cast section edge component stirrups 42 by means of wall plate horizontal distribution reinforcements 15 extending from the prefabricated wall I1 and the prefabricated wall III 3; penetrating vertical steel bars 41 of edge members of the vertical post-pouring section, completing connection of steel bar joints, and completing binding of lacing wires 43 of edge members of the vertical post-pouring section; penetrating the horizontal connecting steel bars 44 into the installed prefabricated wall 1 to ensure that the end parts of the horizontal connecting steel bars 44 do not exceed the range of the vertical post-pouring section 4; installing a second prefabricated wall 2, moving the horizontal connecting steel bars 44 to a designed position one by one, and binding and positioning the horizontal connecting steel bars with the vertical post-cast section edge member stirrups 42; erecting a building inner side template of the vertical post-pouring section 4, pouring post-pouring concrete in the vertical post-pouring section 4 and the cavity 12 to realize the connection of the prefabricated wall I1, the prefabricated wall II 2 and the prefabricated wall III 3, and maintaining and removing the template.

Fig. 17 is a fourth preferred embodiment of the present invention, for a vertical and horizontal wall T-shaped node, the node area being designed as a constraining edge member according to current specifications. The prefabricated wall I1 and the prefabricated wall II 2 are composite heat-insulation single-face superposed wall boards, the prefabricated wall III 3 is an inner wall double-face superposed shear wall, the composite heat-insulation boards 5 of the prefabricated wall I1 and the prefabricated wall II 2 exceed the end parts of the inner prefabricated concrete wall boards 11 and continue to extend outwards, a closed space is continuously enclosed at the position of the T-shaped node, and formwork erection of the outer vertical face of the outer wall is avoided. The prefabricated wall edge component area 21 is arranged at the end parts of the first prefabricated wall 1 and the second prefabricated wall 2, the prefabricated wall edge component area 21 of the third prefabricated wall 3 is not provided, the prefabricated wall edge component area 21 of the first prefabricated wall 1 and the second prefabricated wall 2 and the vertical post-pouring section 4 jointly form a constraint edge component, and the range of the constraint edge component meets the relevant regulations of the existing code building earthquake-resistant design code high-rise building concrete structure technical regulation.

Particularly, unbalanced and differentiated reinforcement design concepts are adopted for vertical post-cast section edge member vertical reinforcements 41 and prefabricated wall edge member vertical reinforcements 18, the diameter of the prefabricated wall edge member vertical reinforcements 18 arranged in the prefabricated wall edge member area 21 is the same as that of the vertical distribution reinforcements 14 and is 8-10mm, the diameter of the vertical post-cast section edge member vertical reinforcements 41 is larger than that of the vertical post-cast section edge member vertical reinforcements, the diameter of the vertical post-cast section edge member vertical reinforcements is not smaller than 14mm, and the total area of the vertical post-cast section edge member vertical reinforcements 41 and the prefabricated wall edge member vertical reinforcements 18 meets the calculation requirements of the bending resistance bearing capacity of the shear wall. The vertical steel bars 41 of the edge members of the vertical post-cast sections of the upper layer and the lower layer are mechanically connected, and preferably adopt straight threaded joints. For the vertical reinforcing steel bars 18 and the vertical distribution reinforcing steel bars 14 of the prefabricated wall edge member with small diameter, the lap joint structure shown in figure 6 or figure 7 is adopted.

The site construction process of the fourth preferred embodiment is basically the same as that of the third preferred embodiment, and 135-degree hooks are arranged at the end parts of the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 of the first prefabricated wall 1 and the second prefabricated wall 2 so as to reduce the overlapping length of the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 and the horizontal connecting reinforcing steel bars 44, further reduce the length of the horizontal connecting reinforcing steel bars 44 and facilitate the penetration of the horizontal connecting reinforcing steel bars 44 in a construction site.

Fig. 18 shows an improved version of the fourth preferred embodiment, the constraint edge component area is entirely in the vertical post-cast section 4, the prefabricated wall 1 and the prefabricated wall 2 have no prefabricated wall edge component area 21, two independent U-shaped steel bars are used as horizontal connecting steel bars 44, the two U-shaped horizontal connecting steel bars 44 are respectively connected with the horizontal distribution steel bars 15 and the horizontal distribution steel bars 16 of the cavity of the prefabricated wall 1 or the prefabricated wall 2, and the vertical post-cast section edge component stirrups 42 in an overlapping manner, so that the horizontal distribution steel bar connection of the prefabricated wall 1 and the prefabricated wall 2 is realized. Compared with the integral linear horizontal connecting steel bars 44 adopted in the fourth preferred embodiment, two U-shaped horizontal connecting steel bars 44 in the figure 18 have small requirements on the site penetrating construction space, the penetrating construction is more convenient, and the site construction efficiency can be improved.

The improved site operation procedure of the fourth preferred embodiment is as follows: firstly, a prefabricated wall I1, a prefabricated wall II 2 and a prefabricated wall III 3 are installed, and vertical post-cast section edge component stirrups 42 are bound by means of horizontally distributed reinforcing steel bars 15 of a wall plate extending out of the prefabricated wall III 3; penetrating horizontal connecting steel bars 44, penetrating vertical steel bars 41 of edge members of the vertical post-cast sections and completing steel bar joint connection; moving the horizontal connecting steel bars 44 to the designed position and binding and fixing; erecting a building inner side template of the vertical post-pouring section 4, pouring post-pouring concrete in the vertical post-pouring section 4 and the cavity 12 to realize the connection of the prefabricated wall I1, the prefabricated wall II 2 and the prefabricated wall III 3, and maintaining and removing the template. Compared with the fourth preferred embodiment, no special requirements are required on the installation sequence of the first prefabricated wall 1, the second prefabricated wall 2 and the third prefabricated wall 3 in the improved field construction shown in fig. 18, the steel bar binding construction in the vertical post-pouring section 4 can be performed after the first prefabricated wall 1, the second prefabricated wall 2 and the third prefabricated wall 3 are completely installed, the construction interface is clearer, and the field construction organization is simpler.

Fig. 19 shows the improved generation one of fig. 18, and the concrete improvement lies in that prefabricated wall 1, prefabricated wall 2's wallboard horizontal distribution reinforcing bar 15, cavity horizontal distribution reinforcing bar 16 directly stretch into vertical post-cast section 4 and vertical post-cast section edge member stirrup 42 overlap joint, need not to realize the horizontal distribution reinforcing bar connection of prefabricated wall 1, prefabricated wall 2 through horizontal connection reinforcing bar 44, and 4 on-the-spot reinforcing bars of vertical post-cast section wear to establish work load still less, wear to establish more high-efficient.

Fig. 20 shows a second modification of fig. 18, which is specifically modified in that a prefabricated wall third 3 is provided with a prefabricated wall edge member area 21, and a prefabricated wall edge member hoop 17 is bent at the inner side of the end part of the prefabricated concrete wall panel 11 and extends from the inner wall of the prefabricated concrete wall panel 11 into the vertical post-pouring section 4 through the cavity 12 for anchoring. Compared with fig. 18, the improved two-vertical post-cast section 4 shown in fig. 20 has a smaller range, and the on-site reinforcement binding workload of the vertical post-cast section 4 is less, and the binding is more efficient.

Fig. 21 is a fifth preferred embodiment of the invention, which is used for T-shaped joints of longitudinal and transverse walls, wherein the first prefabricated wall 1 and the second prefabricated wall 2 are both composite heat-insulating single-sided superposed wall boards with openings, the third prefabricated wall 3 is an inner wall double-sided superposed shear wall, the composite heat-insulating boards 5 of the first prefabricated wall 1 and the second prefabricated wall 2 extend outwards beyond the end of the inner prefabricated concrete wall board 11, and a closed space is continuously enclosed at the T-shaped joints to realize formwork-free of an outer vertical surface of an outer wall. In order to ensure the effect of the outer vertical surface of the building, the width of the shear wall at the side edge of the prefabricated wall opening area 23 of the prefabricated wall I1 and the prefabricated wall II 2 is shorter, only the prefabricated wall edge component area 21 with the smaller width can be arranged, and the vertical post-pouring section 4 is only arranged in the direction parallel to the prefabricated wall III 3 and has a smaller range. The side edge of the prefabricated wall opening area 23 is only provided with a prefabricated wall edge component area 21 with smaller width, and in order to meet the requirements of crack resistance and demoulding in the production stages of a prefabricated wall I1 and a prefabricated wall II 2, a through long steel bar truss 13 is arranged in the middle of the prefabricated wall edge component area 21 along the height direction of the wall body. The 13 oblique web member reinforcing bars of steel bar truss replace the edge component lacing wire, and 13 oblique web member diameters of steel bar truss are not less than 6 mm.

Particularly, because the vertical post-cast section 4 is small in size, the integral linear horizontal connecting steel bars 44 penetrate through the cavities 12 of the first prefabricated wall 1 and the second prefabricated wall 2, and the first prefabricated wall 1 and the second prefabricated wall 2 are connected. The wallboard horizontally distributed reinforcing steel bars 15 of the third prefabricated wall 3 are bent at the inner side of the end part of the prefabricated concrete wallboard 11 and extend into the vertical post-pouring section 4 from the inner wall of the prefabricated concrete wallboard 11 through the cavity 12, and the vertical post-pouring section edge component stirrups 42 are arranged in the vertical post-pouring section 4 and are in lap joint with the wallboard horizontally distributed reinforcing steel bars 15 of the third prefabricated wall 3. 135-degree hooks are arranged at the end parts of the wallboard horizontal distribution reinforcing steel bars 15 of the third prefabricated wall 3, so that the lap joint length of the wallboard horizontal distribution reinforcing steel bars 15 and the vertical post-cast section edge component stirrups 42 is reduced, and further the extension length of the wallboard horizontal distribution reinforcing steel bars 15 is reduced.

Fig. 22 shows a sixth preferred embodiment of the invention, which is used for L-shaped joints of longitudinal and transverse walls, the composite insulation boards 5 of the first prefabricated wall 1 and the second prefabricated wall 2 do not extend outwards, and are flush with the end of the inner prefabricated concrete wall board 11, independent composite insulation boards 52 are externally hung in discontinuous areas of the composite insulation boards 5 of the adjacent prefabricated walls, and the composite insulation boards 5 of the prefabricated walls and the independent composite insulation boards 52 enclose a closed space, so that the formwork erection of the outer vertical surface of the outer wall is avoided. The vertical post-cast section 4, the prefabricated wall I1 and the prefabricated wall II 2 of the sixth preferred embodiment have basically the same steel bar structures as those of the first preferred embodiment. Different from the first preferred embodiment, the independent composite heat-insulation board 52 in the sixth preferred embodiment is constructed in an externally hanging manner after the steel bar binding work in the vertical post-pouring section 4 is finished, the steel bar binding in the vertical post-pouring section 4 and the vertical steel bar 41 connecting construction space of the edge member of the vertical post-pouring section are large, the restriction of the site construction space is small, and the site construction is more efficient.

Fig. 23 shows the improvement of fig. 22, and the specific improvement is that a small-sized vertical post-cast section 4 is only arranged in the intersection area of the prefabricated wall 1 and the prefabricated wall 2, the prefabricated wall 1 and the prefabricated wall 2 are both provided with prefabricated wall edge member areas 21, the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 of the prefabricated wall 1 and the prefabricated wall 2 do not extend out, and the connection of the prefabricated wall 1 and the prefabricated wall 2 is realized by lap-joint connection of the horizontal connecting reinforcing steel bars 44 with the wall plate horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16. Compared with the sixth preferred embodiment, the improved vertical post-cast section 4 shown in fig. 23 is smaller in size, the on-site reinforcement is simpler to bind, a template does not need to be erected on the inner side, and the independent composite heat-insulation board 52 is smaller in size.

Fig. 24 shows a modification of fig. 23, in which a reinforcing bar is used as both the vertical post-cast section edge member stirrup 42 and the horizontal connecting reinforcing bar 44 in fig. 23, and the amount of the reinforcing bar is less.

Fig. 25 is a seventh preferred embodiment of the invention, which is used for L-shaped joints of longitudinal and transverse walls, wherein the first prefabricated wall 1 on one side comprises a prefabricated wall opening area 23, the composite heat-insulating boards 5 of the first prefabricated wall 1 and the second prefabricated wall 2 do not extend outwards and are flush with the end of the inner prefabricated concrete wall board 11, independent composite heat-insulating boards 52 are hung outside discontinuous areas of the adjacent prefabricated wall composite heat-insulating boards 5, and the prefabricated wall composite heat-insulating boards 5 and the independent composite heat-insulating boards 52 enclose a closed space to realize formwork-free of the outer vertical surface of the outer wall. The side of the opening of the prefabricated wall I1 is only provided with a prefabricated wall edge component area 21 with smaller width, in order to meet the requirements of crack resistance and demoulding in the production stage I1 of the prefabricated wall, a through long steel bar truss 13 is arranged in the middle of the prefabricated wall edge component area 21 along the height direction of the wall body, the steel bars of the inclined web members of the steel bar truss 13 replace the lacing wires of the edge components, and the diameter of the inclined web members of the steel bar truss 13 is not less than 6 mm. The rebar configuration within the seven vertical post-cast sections 4 of the preferred embodiment is substantially identical to that of fig. 24.

Fig. 26 shows an eighth preferred embodiment of the invention for a vertical and horizontal wall T-shaped node, the node area being designed to either construct an edge structure or constrain an edge structure according to current specifications. Wherein prefabricated wall 1, prefabricated wall two 2 are compound incubation single face coincide wallboard, and prefabricated wall three 3 is the two-sided coincide shear wall of interior wall, and the compound heated board 5 of prefabricated wall 1, prefabricated wall two 2 does not outwards extend, keeps the parallel and level with inboard precast concrete wallboard 11 tip, joins independent compound heated board 52 in adjacent prefabricated wall compound heated board 5 discontinuous area, and compound heated board 5 of prefabricated wall encloses synthetic enclosure space with independent compound heated board 52, realizes that the facade exempts from the formwork outside of outer wall. The wallboard horizontal distribution reinforcing steel bars 15 and the cavity horizontal distribution reinforcing steel bars 16 of the first prefabricated wall 1, the second prefabricated wall 2 and the third prefabricated wall 3 extend into the vertical post-pouring section 4 and are in lap joint with the vertical post-pouring section edge member stirrups 42. The independent composite insulation board 52 is externally hung after the reinforcement binding work in the vertical post-pouring section 4 is finished, so that the operation space requirements of reinforcement binding in the vertical post-pouring section 4 and connection construction of the vertical reinforcement 41 of the edge component of the vertical post-pouring section are met.

Fig. 27 shows a first improvement of the first improvement of fig. 26, and the first improvement lies in that the horizontal distribution reinforcing steel bars 15 of the wall panels of the first prefabricated wall 1 and the second prefabricated wall 2 and the horizontal distribution reinforcing steel bars 16 of the cavity do not extend out of the prefabricated wall, and the horizontal distribution reinforcing steel bars of the first prefabricated wall 1 or the second prefabricated wall 2 are connected with the horizontal distribution reinforcing steel bars 15 of the wall panels of the first prefabricated wall 1 and the horizontal distribution reinforcing steel bars 16 of the cavity and the stirrups 42 of the edge members of the vertical post-cast sections in an overlapping manner through two U-shaped horizontal connecting reinforcing steel bars 44, so that the horizontal distribution reinforcing steel bars of the first prefabricated wall 1 and the second prefabricated wall 2 are connected.

Fig. 28 shows a modification of fig. 27, which is specifically modified in that the horizontal distribution reinforcing bars 15 of the wall panels of the prefabricated wall three 3 do not extend out of the prefabricated wall, and the connection of the prefabricated wall one 1, the prefabricated wall two 2 and the prefabricated wall three 3 is realized by overlapping and connecting the U-shaped horizontal connecting reinforcing bars 44 with the horizontal distribution reinforcing bars 15 of the wall panels of the prefabricated wall three 3.

Fig. 29 shows a second modification of fig. 26, which is a modification of the third prefabricated wall 3 in which a prefabricated wall edge member area 21 is provided, and prefabricated wall edge member stirrups 17 are bent inside the end portions of the prefabricated concrete wall panel 11 and extend from the inner wall of the prefabricated concrete wall panel 11 through the cavity 12 into the vertical post-cast section 4 for anchoring. Compared with the drawing of fig. 26, the improved two-vertical post-pouring section 4 shown in fig. 29 has smaller range, and the on-site reinforcement binding of the vertical post-pouring section 4 has less workload and more efficient binding.

Fig. 30 shows the improved generation of fig. 29, and the specific improvement lies in that the horizontal distribution reinforcing steel bars 15 of the wall panels of the prefabricated wall 1 and the prefabricated wall 2 and the horizontal distribution reinforcing steel bars 16 of the cavity do not extend out of the prefabricated wall, and the horizontal distribution reinforcing steel bars of the prefabricated wall 1 or the prefabricated wall 2 are connected with the horizontal distribution reinforcing steel bars 15 of the wall panels of the prefabricated wall 1 and the cavity horizontal distribution reinforcing steel bars 16 and the vertical post-cast section edge member stirrups 42 in an overlapping manner through two U-shaped horizontal connecting reinforcing steel bars 44, so that the horizontal distribution reinforcing steel bars of the prefabricated wall 1 and the prefabricated wall 2 are connected.

Fig. 31 shows a modification of fig. 30, which is specifically modified in that the horizontal distribution reinforcing bars 15 of the wall panels of the prefabricated wall three 3 do not extend out of the prefabricated wall, and the connection of the prefabricated wall one 1, the prefabricated wall two 2 and the prefabricated wall three 3 is realized by overlapping and connecting the U-shaped horizontal connecting reinforcing bars 44 with the horizontal distribution reinforcing bars 15 of the wall panels of the prefabricated wall three 3.

Formwork-supporting is avoided to the outer facade of prefabricated building accessible outer wall, reduces building construction stage outer wall scaffold frame, and the advantage of performance assembled construction, the outer facade roughness of outer wall is high simultaneously, the architectural effect is good, nevertheless realizes that the formwork-supporting is avoided to the outer facade of outer wall often can lead to the wall node reinforcing bar construction operating space not enough that moves about freely and quickly, is difficult to guarantee to pass advantage performance and construction quality. The invention discloses a connecting node for a composite heat-insulation single-face superposed wallboard, which is used for connecting L-shaped or T-shaped connecting nodes of longitudinal and transverse walls, wherein a prefabricated wall composite heat-insulation board extends outwards beyond the end part of an inner prefabricated concrete wallboard, and adjacent prefabricated wall composite heat-insulation boards continuously enclose a closed space to realize formwork-free of an outer vertical face of an outer wall; or the composite heat-insulation boards of the prefabricated walls do not extend outwards and are flush with the inner side prefabricated concrete wall board, and discontinuous areas of the adjacent composite heat-insulation boards of the prefabricated walls enclose a closed space through the externally-hung independent composite heat-insulation boards, so that formwork erecting of the outer vertical surface of the outer wall is avoided. Through adjusting prefabricated wall horizontal distribution reinforcing bar and horizontal connection reinforcing bar structure, change the configuration of vertical reinforcing bar in vertical post-cast section, prefabricated wall edge member region, can avoid the regional reinforcing bar of node intensive, satisfy the demand of vibrating when pouring the concrete after the cavity, can compromise the outer facade of outer wall and exempt from formwork and construction efficiency, guarantee the reliability of vertical and horizontal wall connected node biography power.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A connecting node for a composite heat-insulation single-face superposed wallboard is applied to the L-shaped or T-shaped connecting node position of a longitudinal wall and a transverse wall, the composite heat-insulation single-face superposed wallboard is used for a building outer wall and comprises an inner side precast concrete wallboard (11), an outer side composite heat-insulation board (5) and a tie piece (51) connecting the inner side precast concrete wallboard and the outer side composite heat-insulation board, a cavity (12) is formed in the middle, two layers of reinforcing mesh sheets of a shear wall are respectively distributed in the inner side precast concrete wallboard (11) and the middle cavity (12) in a factory production stage, the connecting node position is characterized in that the L-shaped or T-shaped connecting node position of the longitudinal wall and the transverse wall is formed, the composite heat-insulation board (5) of the composite heat-insulation single-face superposed wallboard extends outwards beyond the end part of the inner side precast concrete wallboard (11), the adjacent precast wall composite heat-insulation boards (5) continuously enclose a closed space, formwork erecting of the outer wall face of the outer wall is realized, the precast wall is free of horizontally distributed reinforcing steel bars (15), The cavity horizontal distribution reinforcing steel bars (16) directly extend into the vertical post-pouring section (4) for anchoring, and after post-pouring concrete is poured into the vertical post-pouring section (4) and the cavity (12), connection of adjacent prefabricated walls is achieved.

2. The utility model provides a connected node for compound incubation single face coincide wallboard, a serial communication port, vertical and horizontal wall L shape or T shape connected node position, compound incubation single face coincide wallboard's compound insulation board (5) do not outwards extend, when with inboard precast concrete wallboard (11) parallel and level, hang independent compound insulation board (52) in adjacent precast wall compound insulation board (5) discontinuous region outward, compound insulation board (5) of precast wall and independent compound insulation board (52) enclose synthetic enclosure space, realize that the outer facade of outer wall exempts from the formwork, precast wall wallboard horizontal distribution reinforcing bar (15), cavity horizontal distribution reinforcing bar (16) directly stretch into vertical post-cast section (4) anchor, or wear to establish horizontal connecting reinforcing bar (44) between vertical post-cast section (4) and precast wall and realize the connection of adjacent precast wall.

3. The connection node for the composite heat-insulation single-sided composite wallboard according to claim 1 or 2, wherein the inner-side precast concrete wallboard (11) is provided with the through-length steel bar trusses (13) along the height direction of the wall body, the requirements of crack resistance and demolding in the production stage of the composite heat-insulation single-sided composite wallboard are met, the reliable pulling of post-cast concrete in the precast concrete wallboard (11) and the cavity (12) is realized, the distance between every two adjacent steel bar trusses (13) is 400-600 mm, lower chord steel bars of the steel bar trusses (13) are arranged in the precast concrete wallboard (11), and upper chord steel bars are located in the cavity (12).

4. The connection node for the composite heat-preservation single-sided laminated wall board according to claim 1 or 2, wherein when the horizontally distributed steel bars (15) of the prefabricated wall board extend into the vertical post-pouring section (4), the horizontally distributed steel bars directly extend out of the end part of the prefabricated wall board (11) and extend into the vertical post-pouring section (4), or are bent at the inner side of the end part of the prefabricated concrete wall board (11) and extend into the cavity (12) from the inner wall of the prefabricated concrete wall board (11) and extend into the vertical post-pouring section (4) through the cavity (12), so that rib grooves are prevented from being formed in the side mold of the prefabricated concrete wall board (11) in the production stage.

5. The connection node for the composite heat-preservation single-face superposed wall boards according to claim 1 or 2 is characterized in that the vertical post-pouring section (4) and the prefabricated wall edge component area (21) jointly form an integral edge component of the shear wall, the vertical steel bars in the vertical post-pouring section (4) and the prefabricated wall edge component area (21) adopt an unbalanced and differentiated reinforcement design concept, the small-diameter prefabricated wall edge component vertical steel bars (18) are arranged in the prefabricated wall edge component area (21), the large-diameter vertical post-pouring section edge component vertical steel bars (41) are arranged in the vertical post-pouring section (4), and the total area of the vertical post-pouring section edge component vertical steel bars (41) and the prefabricated wall edge component vertical steel bars (18) meets the requirement of shear wall bending resistance bearing capacity calculation.

6. The connecting joint for the composite heat-insulating single-sided superimposed wall panel according to claim 5, wherein the vertical reinforcing steel bars (18) of the prefabricated wall edge member have the same diameter as the vertical distribution reinforcing steel bars (14) and have a diameter of 8-10 mm; the vertical steel bars (61) of the lower prefabricated wall are bent at the top of the lower prefabricated wall (6) and extend into the cavity (12) of the upper prefabricated wall (7) to be in lap joint with the vertical steel bars (71) of the upper prefabricated wall, or a single row of additional vertical connecting steel bars (9) are arranged in the cavity (12) to be in lap joint with the vertical steel bars (61) of the lower prefabricated wall and the vertical steel bars (71) of the upper prefabricated wall.

7. The connection node for the composite heat-insulating single-sided superposed wall panel according to claim 5, wherein the vertical steel bars (41) of the edge members of the vertical post-cast sections of the upper and lower layers are mechanically connected.

8. The connection node for the composite heat-insulation single-sided laminated wallboard according to claim 1 or 2, characterized in that when the composite heat-insulation single-sided laminated wallboard is provided with a hole, a through long steel bar truss (13) is arranged in the middle of a prefabricated wall edge component area (21) along the height direction of the wall body, so that the requirements of crack resistance and demoulding of the composite heat-insulation single-sided laminated wallboard in the production stage are met; the reinforcing steel bar truss (13) diagonal web member reinforcing steel bar replaces the edge component lacing wire, and the diameter of the reinforcing steel bar truss (13) diagonal web member is not less than 6 mm.

9. The connecting joint for the composite heat-insulating single-sided superposed wall panel according to claim 1 or 2, wherein 135-degree hooks are arranged at the ends of the horizontal distribution reinforcing steel bars (15) of the prefabricated wall panel and the horizontal distribution reinforcing steel bars (16) of the cavity or a closed ring is formed, so that the requirement of lap joint force transmission is met in a shorter length.

10. The connecting joint for the composite heat-insulating single-sided superposed wall panel according to claim 1 or 2, wherein when the connecting joint is a T-shaped joint, the horizontal connecting steel bars (44) adopt two independent U-shaped steel bars, and the U-shaped steel bars are respectively in lap joint with the vertical post-cast section edge member stirrups (42), so that the efficiency requirement of penetrating the horizontal connecting steel bars (44) in a construction site is met.

Images