A structurally integrated prefabricated hollow wall without formwork removal and construction technology

Abstract

The present invention belongs to a structurally integrated prefabricated hollow wall body without mold removal, including a prefabricated single-sided laminated shear wall panel, a prefabricated single-sided laminated shear wall panel with a reserved cast-in-place cavity, the prefabricated single-sided laminated shear wall panel including a prefabricated wall panel, a steel bar system, a pier and a through hole, a concrete pier with a pier integrally cast with the prefabricated wall panel, a through hole is provided at the center of the pier as a passage for the tension bolts to enter and exit, an integrated plate positioning bracket is buckled on the end surface of the pier, and the other end of the integrated plate positioning bracket is connected to the back rib of the integrated plate. The use of the integrated plate positioning bracket allows the integrated plate to be temporarily positioned accurately, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to a structurally integrated formwork-free prefabricated hollow wall and a construction process, belonging to the technical field of building exterior wall engineering. Background Art

[0002] The traditional exterior wall insulation is the "post-anchoring and pasting method", that is: first make the exterior wall structure, then fix the insulation layer with rivets, and then cover the insulation layer with plaster, commonly known as the "thin plastering and pasting method". This method not only has poor insulation and energy-saving effects, but also has difficult quality control and is very likely to cause engineering accidents such as falling off.

[0003] Concept of structural integration: The building exterior wall is divided into layers from outside to inside: external decorative layer, fireproof and thermal insulation layer, structural layer, and internal decorative layer. The external fireproof and thermal insulation layer is combined with the structural layer through anchors and poured together, which is structural integration. Its advantage is that it prevents the thermal insulation layer from falling off and does not require multiple processes for decorating the exterior wall. The exterior wall panels that have both fireproof and thermal insulation functions formed by pre-anchoring the external fireproof and thermal insulation layers are usually called integrated exterior wall panels.

[0004] Concept of non-removal formwork: Non-removal formwork is a formwork that is permanently integrated with the concrete structure. The "integrated exterior wall panel" in this example is a non-removal formwork, which is used as a formwork during the pouring and molding of the exterior wall concrete. After the wall is formed, it does not need to be removed and is permanently integrated with the wall structure. It has multiple functions such as decoration, fire prevention, and heat preservation.

[0005] Concept of prefabricated hollow wall: It is a form of prefabricated building wall, also called composite wall, which is divided into double-sided composite wall and single-sided composite wall. The wall panels are prefabricated in the factory, and cast-in-place cavities are reserved. Secondary pouring is completed at the construction site to form a structural load-bearing wall. Due to the cast-in-place cavity, it is convenient to connect the wall reinforcement up and down and left and right, which is more advantageous than traditional prefabricated solid walls.

[0006] Existing "structurally integrated prefabricated hollow wall without formwork removal" structural forms and construction processes at home and abroad:

[0007] Prefabricated sandwich facades:

[0008] Structural form: It is a fully prefabricated wall, and the molding is completed in the factory, which meets the evaluation standards of prefabricated buildings. The wall is divided from the inside to the outside:

[0009] Inner leaf wall: Reinforced load-bearing structure, which is a structural load-bearing member. That is, the structural force of the prefabricated sandwich exterior wall is borne by the inner leaf wall. Due to factory prefabrication, the steel bars of the entire exterior wall must be cut off before completion. The upper and lower floors of the house are connected to the wall load-bearing steel bars through the "sleeve grouting technology".

[0010] Fireproof and thermal insulation layer: laid between the inner and outer leaf walls.

[0011] Outer leaf wall: prefabricated concrete thin plate structure, connected to the inner leaf wall through special components, sandwiching the fireproof insulation layer in the middle.

[0012] Finishing layer: laid on the surface of the outer leaf wall panel to serve as a decorative effect.

[0013] Construction technology:

[0014] Factory-made: traditional craftsmanship.

[0015] On-site hoisting and installation: The built-in sleeve of the upper wall needs to be accurately aligned with the reserved steel bars at the top of the lower wall.

[0016] Secondary grouting: After the wall is in place and calibrated, a key process must be completed: secondary grouting. Grout is a special and expensive material that requires special equipment to fill the gaps between the sleeve and the wall. That is, the steel bar connection and the wall gap connection are completed by the secondary grouting process.

[0017] Curing and molding: traditional technology.

[0018] Completed.

[0019] Integrated exterior wall without formwork removal and thermal insulation structure:

[0020] Structural form: Fully cast-in-place concrete walls, not a prefabricated building system. The outer wall formwork is replaced by an integrated insulation board, which is permanently combined with the concrete wall. The walls from inside to outside are:

[0021] Shear wall: reinforced load-bearing structure, traditional cast-in-place technology.

[0022] One-piece board that does not require formwork removal: It is manufactured in the factory, that is, the insulation and fireproof boards are combined together, and the anchors connected to the concrete structure are preset.

[0023] Outer surface: generally plastered and sprayed.

[0024] Construction technology:

[0025] Shear wall reinforcement binding: traditional technology.

[0026] Internal formwork: usually steel formwork, aluminum alloy formwork or wooden formwork.

[0027] Installation of inner mold back ribs: Back ribs are load-bearing rods that enhance the overall rigidity of the formwork. They are generally perforated channel steels or parallel round tubes, set horizontally, and the spacing between back ribs is determined by calculation.

[0028] Install integrated panels: The mold-free insulation panels are generally integrated panels, i.e. insulation layer + inner and outer lining panels, which increase the overall rigidity and strength so that they can be used as templates. Before installation, pre-drilling is required and insulation nails must be installed according to specifications.

[0029] Install the outer back rib: At this time, the inner and outer back ribs are clamped with tension bolts to tighten the inner and outer molds.

[0030] Insert the tension bolts: The tension bolts connect the inner and outer back ribs to clamp the inner and outer formwork to ensure the stability of the wall when pouring concrete.

[0031] Casting concrete walls: traditional technique.

[0032] Curing and molding: traditional technology.

[0033] Pull out the tension screws and remove the inner and outer back ribs.

[0034] Removing the inner formwork: traditional technique.

[0035] Hole sealing: Carry out in accordance with the specifications.

[0036] Insulation layer finishing: implemented in accordance with specification requirements.

[0037] Completed.

[0038] Technical defects of existing structural forms and processes:

[0039] Prefabricated sandwich facades:

[0040] The factory production process is complicated, the efficiency is low and the cost is high.

[0041] Heavy components: difficult to transport and hoist.

[0042] On-site alignment operations are difficult: the overall accuracy of the house is poor.

[0043] Secondary grouting poses great safety risks, is often not fully filled, and lacks detection methods.

[0044] There are horizontal seams all around each wall, which makes it very easy to leak.

[0045] The outer wall panels are heavy, and there is an insulation layer in the middle to connect them to the inner wall panels that bear the load, so there is a huge risk of them falling off.

[0046] Integrated exterior wall without formwork removal and thermal insulation structure:

[0047] Internal formwork problem: Traditional wooden formwork, steel formwork or aluminum alloy formwork is still used. The wall reinforcement is tied on site, which fails to meet the basic requirements of prefabricated buildings.

[0048] Difficult alignment operation: The template has low rigidity and large hole spacing. The template will deform and expand when concrete is poured. Therefore, there are many holes and the inner template has many holes for tension bolts, which makes alignment with the outer insulation board difficult.

[0049] The insulation layer is easily damaged and difficult to detect: the insulation layer is directly opened with no protective device. When aligning, the screws will poke randomly, which can easily damage the soft insulation board. Because it is a "blind hole alignment", damage is not easy to detect.

[0050] Wall precision control issues: The insulation layer is a soft body without an infinite position device. When the bolts are pulled together, it is easy to be compressed and deformed, especially the appearance is uneven.

[0051] Construction operation problems: In national standards and actual operations, the inner lining back rib method is adopted. That is, the weak points that are prone to mold expansion must first be placed with inner lining back ribs or pallets and then clamped by the main back ribs. The resulting situation is: serious waste, as long as one point needs inner lining back ribs, the whole piece must be set, otherwise the main back ribs will be suspended, and mistakes are not allowed. If it is found that the second point needs to be strengthened, the whole back rib must be removed first, and then the inner lining back ribs are added.

[0052] Cold bridge problem: It is mainly caused by the openings in the inner layer of the insulation layer without any protective measures during concrete pouring. Especially during vibration, cement slurry will flow back to form cold bridges, which seriously affect the insulation effect and are difficult to detect from the outside. Summary of the invention

[0053] The technical problem to be solved by the present invention is to provide a structurally integrated prefabricated hollow wall body and a construction process without requiring formwork removal.

[0054] To solve the above problems, the specific technical scheme of the present invention is as follows: a structurally integrated prefabricated hollow wall that does not require formwork removal, including prefabricated single-sided composite shear wall panels, the prefabricated single-sided composite shear wall panels have reserved cast-in-place cavities, the prefabricated single-sided composite shear wall panels include prefabricated wall panels, a steel bar system, piers and through holes, the piers are concrete piers that are integrally cast with the prefabricated wall panels, a through hole is provided at the center of the pier as a passage for the tension bolts to enter and exit, an integrated panel positioning bracket is buckled on the end face of the pier, and the other end of the integrated panel positioning bracket is connected to the back rib of the integrated panel.

[0055] The integrated plate positioning bracket includes a middle connecting plate with bracket flanges symmetrically connected at both ends in the length direction. The bracket flanges are continuous, hollow, ribbed grid structures. The height of the bracket flanges is the thickness of the concrete wall steel bar protective layer, which is 15 mm. When in use, the bottom surface of the integrated plate contacts it. A bolt hole is provided in the middle of the middle connecting plate for passing the tension bolts. A accommodating cavity is provided on the integrated plate positioning bracket. The accommodating cavity is located between the two bracket flanges. The size of the accommodating cavity corresponds to the width of the pier. The accommodating cavity is buckled on the upper end surface of the pier. Two bracket side frames are vertically connected to the upper end surface of the middle connecting plate. The two bracket side frames are symmetrically arranged. There is a certain distance between the two bracket side frames for pulling the bolts through. The two bracket side frames constrain the horizontal position of the integrated plate. The height is not greater than the thickness of the integrated plate. A fixing ring is provided at the upper end of the bracket side frame.

[0056] A bolt hole is arranged at the center of the middle connecting plate, and the axis of the bolt hole coincides with the symmetric center line of the two bracket side frames.

[0057] A blocking grate is installed on the upper surface of the middle connecting plate. The blocking grate is located between the two piers. One end of the blocking grate contacts the integrated plate, and the other end is firmly tied to the steel bar system. The end surface of the blocking grate is on the same horizontal plane as the end surface of the integrated plate positioning bracket.

[0058] The blocking grate is provided with a plurality of hollows, and the edges of the blocking grate are provided with transverse ribs and longitudinal ribs for binding on the steel bar system.

[0059] The tension bolts are sequentially passed through the back rib, between the two bracket side frames, the bolt holes and the piers until they pass through the end surface of the prefabricated single-sided composite shear wall panel and are then locked.

[0060] The one-piece board is a layered structure, which includes an outer layer structure, a fireproof and heat-insulating layer and an inner layer from top to bottom, and the three layers are fixedly connected by anchor nails.

[0061] The prefabricated single-sided composite shear wall panel is provided with a rough surface, the rough surface is opposite to the casting cavity, the rough surface is not less than 80% of the whole area, and the roughness is not less than 4.0 mm.

[0062] A construction process for a structurally integrated prefabricated hollow wall without formwork removal comprises the following steps:

[0063] 1. Factory-made prefabricated composite wall panels;

[0064] 2. Prepare the integrated panel fixing bracket: plastic parts or combined plastic parts;

[0065] 3. Prepare sealing grates;

[0066] 4. Preparation of decorative thermal insulation integrated panels: Traditional technology, the thickness, length and width of the panels are determined by the design and specification requirements;

[0067] 5. Back rib preparation: entrusted to professional manufacturers for processing, made according to the force requirements, standard parts;

[0068] 6. Installation;

[0069] (14) Prefabricated composite wall panels are hoisted into place, temporary fixed support rods are installed, and the verticality of the wall is adjusted;

[0070] (15) A steel mesh of the wall is laid at the end of the steel bar system 1-2 according to the requirements of the design drawings. The shear wall has two steel meshes. In this embodiment, one steel mesh has been pre-buried in the prefabricated wall panel, and the other is tied to the steel bar system 1-2. In this way, after pouring the in-situ concrete of the cavity 2, it is overlapped with the integrated plate 5 to form a complete shear wall;

[0071] (16) Install the positioning bracket: First, tie it in place: the center of the positioning bracket coincides with the hole position of the pier, and the flanges of the brackets on both sides are firmly tied to the steel mesh system. According to the position of the hole in the pier, corresponding holes are drilled to facilitate the passage of the tension screws, and the hole position is centered;

[0072] (17) Binding of sealing grates: The longitudinal ribs, transverse ribs and steel mesh system are firmly bound, and the grate width can be adjusted at will;

[0073] (18) Install the integrated board: Pre-cut the width of the integrated board according to the distance between the two adjacent positioning bracket side panels, place it in place, and insert the pin into the fixing ring at the top of the positioning bracket side panel to clamp the integrated board;

[0074] (19) Install the tension bolts and inner and outer back ribs from bottom to top;

[0075] (20) A second layer of back ribs can be installed at weak locations;

[0076] (21) Concrete pouring and curing;

[0077] (22) Remove the back ribs and the tension bolts;

[0078] (23) Concrete wall hole plugging: traditional technology;

[0079] (24) Insulation layer repair: mainly filling the space between the side baffles and leveling the entire layer;

[0080] (25) External wall covering and decoration: traditional crafts;

[0081] Completed.

[0082] Compared with the existing technical process, the beneficial effects of the present invention are:

[0083] The present invention changes the "post-anchoring" of the building exterior wall insulation layer into "pre-anchoring", that is, the insulation layer anchor nails are cast together with the wall concrete, thus solving the potential safety hazard of the insulation layer being easy to fall off;

[0084] The positioning bracket is used to make the temporary positioning of the integrated board precise;

[0085] At present, the prefabricated solid shear wall adopts the "grouting sleeve connection" process, which has great safety hazards;

[0086] Semi-prefabricated composite walls solve the problem of steel bars connecting from top to bottom, making the building safer and more reliable;

[0087] The internal and external two-way support-free formwork greatly reduces the project cost while achieving simple and fast construction;

[0088] Small investment in equipment and quick results;

[0089] The insulation board is installed on site without any dead angles, and the insulation effect is fully guaranteed;

[0090] The process is simple and the work efficiency is greatly improved;

[0091] The overall wall accuracy problem has been solved, making the building more aesthetically pleasing.

[0092] Solved the problems of easy cracking and mold expansion during wall pouring;

[0093] The thermal insulation and structure are integrated, energy-saving and environmentally friendly, and it will not fall off, and the overall project cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 This is a schematic diagram of a structurally integrated prefabricated hollow wall structure that does not require formwork removal.

[0095] Figure 2 This is a schematic diagram of the integrated panel positioning bracket structure.

[0096] Figure 3 It is a schematic diagram of the sealing grate structure.

[0097] Figure 4 This is a schematic diagram of the integrated board structure.

[0098] Figure 5 Schematic diagram of the prefabricated single-sided composite shear wall panel structure. DETAILED DESCRIPTION

[0099] like Figure 1-5 As shown, a structurally integrated prefabricated hollow wall body without formwork removal includes a prefabricated single-sided laminated shear wall panel 1. The prefabricated single-sided laminated shear wall panel 1 reserves a cast-in-place cavity 2 to facilitate the upper and lower and left and right connections of the stress-bearing steel bars. The processing method of the prefabricated single-sided laminated shear wall panel 1 is to prefabricate half of the wall in the factory, and the stress-bearing steel bars have been configured according to the design requirements to meet the overall mechanical properties after on-site lamination. The prefabricated single-sided laminated shear wall panel 1 is used as a part of the stress-bearing wall and also as a formwork, that is, when pouring concrete in situ, there is no need to support the formwork. The prefabricated single-sided laminated shear wall panel 1 includes a prefabricated wall panel 1-1, a steel bar system 1-2, a pier 1-3 and a through hole 1- 4, wherein the prefabricated wall panel 1-1 is provided with wall stress reinforcement, the stress reinforcement on the other side of the wall can be tied in the factory or on site, and the two rows of stress reinforcement meshes are connected by truss bars or other means to ensure the overall forming accuracy of the wall; the pier 1-3 is a concrete pier cast integrally with the prefabricated wall panel 1-1, the top of which is the supporting point of the positioning bracket, and a through hole 1-4 is provided at the center of the pier 1-3 as a passage for the tension bolts to enter and exit; the prefabricated single-sided composite shear wall panel 1 is provided with a rough surface to better combine with the cast-in-place concrete, the rough surface is not less than 80% of the overall area, and the roughness is not less than 4.0mm.

[0100] The upper end surface of the prefabricated single-sided composite shear wall panel 1 is provided with an integrated panel positioning bracket 3, and the integrated panel positioning bracket 3 includes an intermediate connecting plate 3-4, and the two ends of the length direction are symmetrically connected with bracket flanges 3-1. The bracket flange 3-1 is a continuous, hollow, ribbed grid structure. The height of the bracket flange 3-1 is the thickness of the concrete wall steel bar protective layer, which is 15mm. When in use, the bottom surface of the integrated panel is in contact with it. A bolt hole 3-6 is provided in the middle of the intermediate connecting plate 3-4 for passing the tension bolt 6. The integrated panel positioning bracket 3 is provided with a receiving cavity 3-5, and the receiving cavity 3-5 is located between the two bracket flanges 3 -1, the size of the accommodating cavity 3-5 corresponds to the width of the pier 1-3, the accommodating cavity 3-5 is buckled on the upper end surface of the pier 1-3, and the upper end surface of the middle connecting plate 3-4 is vertically connected with two bracket side frames 3-2, the two bracket side frames 3-2 are symmetrically arranged, and there is a certain distance between the two bracket side frames 3-2, which is convenient for pulling the bolts 6 through. The two bracket side frames 3-2 constrain the horizontal position of the integrated plate, and the height thereof is not greater than the thickness of the integrated plate. A fixing ring 3-3 is provided on the upper end of the bracket side frame 3-2, and a pin can be easily inserted to clamp the integrated plate so that it does not shift, thereby playing a temporary fixing role.

[0101] A bolt hole 3-6 is provided at the center of the middle connecting plate 3-4, and the axis of the bolt hole 3-6 coincides with the symmetric center line of the two bracket side frames 3-2.

[0102] The upper end surface of the middle connecting plate 3-4 is provided with a blocking grate 4, which is located between the two piers 1-3, one end of the blocking grate 4 is in contact with the integrated plate 5, and the other end is firmly tied to the steel bar system 1-2, and the end surface of the blocking grate 4 is in the same horizontal plane as the end surface of the integrated plate positioning bracket 3. The blocking grate 4 is provided with a plurality of hollows 4-3, and the edges of the blocking grate 4 are provided with transverse ribs 4-2 and longitudinal ribs 4-1 for tying to the steel bar system 1-2.

[0103] The integrated plate 5 is buckled on the end face of the integrated plate positioning bracket 3, and the other end face of the integrated plate 5 is connected with a back rib 7. The tension bolts 6 pass through the back rib 7, between the two bracket side frames 3-2, the bolt holes 3-6 of the middle connecting plate 3-4 and the pier 1-3 in sequence until they pass through the end face of the prefabricated single-sided composite shear wall panel 1 and are locked.

[0104] The integrated panel 5 is a layered structure, which includes an outer layer structure 5-2, a fireproof and heat-insulating layer 5-1 and an inner layer 5-4 from top to bottom, and the three-layer structure is fixedly connected by anchor nails 5-3.

[0105] Processing:

[0106] 1. Factory-made prefabricated composite wall panels:

[0107] Support the side formwork on the production platform or formwork table to define the size range and thickness of the prefabricated wall panels;

[0108] (1) Pre-buried "piers", traditional technology;

[0109] (2) Lay the stress-bearing steel mesh according to the design drawings;

[0110] (3) Tie up the "rebar system";

[0111] (4) Install pre-buried wall junction boxes and temporary fixing points;

[0112] (5) Install demoulding hanging parts for horizontal hanging

[0113] (6) Install construction hanging parts for vertical hanging

[0114] (7) Concrete pouring, curing, demoulding, storage and transportation are all traditional processes;

[0115] (8) The finished product is ready for use.

[0116] 2. Prepare the integrated panel fixing bracket: plastic parts or combined plastic parts;

[0117] 3. Prepare sealing grates;

[0118] 4. Preparation of decorative thermal insulation integrated panels: Traditional technology, the thickness, length and width of the panels are determined by the design and specification requirements;

[0119] 5. Back rib preparation: entrusted to professional manufacturers for processing, made according to the force requirements, standard parts;

[0120] 6. Installation;

[0121] (26) The prefabricated composite wall panels are hoisted into place, temporary fixed support rods are installed, and the verticality of the wall is adjusted.

[0122] (27) A steel mesh of the wall is laid at the end of the steel system 1-2 according to the design drawing requirements. The shear wall has two steel meshes. In this embodiment, one steel mesh has been pre-buried in the prefabricated wall panel, and the other is tied to the steel system 1-2. In this way, after pouring the in-situ concrete of the cavity 2, it is overlapped with the integrated plate 5 to form a complete shear wall;

[0123] (28) Install the positioning bracket 3: First, tie it in place: the center of the positioning bracket 3 coincides with the hole position of the pier 1-3, the bracket flanges 3-1 on both sides are firmly tied to the steel mesh system 1-2, and according to the position of the hole in the pier, corresponding holes are drilled to facilitate the passage of the tension screw 6, and the hole position is centered;

[0124] (29) Binding the sealing grate 4: The longitudinal ribs 4-1, the transverse ribs 4-2 and the steel mesh system 1-2 are firmly bound, and the grate width can be adjusted at will;

[0125] (30) Installing the integrated panel 5: Pre-cut the width of the integrated panel according to the spacing between the two adjacent positioning bracket side panels, place it in place, and insert the pin into the fixing ring 3-3 at the top of the positioning bracket side panel to clamp the integrated panel 5;

[0126] (31) Install the tension bolts and inner and outer back ribs from bottom to top;

[0127] (32) A second layer of back ribs can be installed at weak locations;

[0128] (33) Concrete pouring and curing;

[0129] (34) Remove the back ribs and the tension bolts;

[0130] (35) Concrete wall hole plugging: traditional technology;

[0131] (36) Insulation layer repair: mainly filling the space between the side baffles and leveling the whole;

[0132] (37) External wall covering and decoration: traditional crafts;

[0133] (38)Completed.

[0134] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present invention, and they should also be considered to belong to the protection scope of the present invention.

Claims

1. A structurally integrated prefabricated hollow wall without formwork removal, characterized in that: The invention comprises a prefabricated single-sided composite shear wall panel (1), wherein the prefabricated single-sided composite shear wall panel (1) has a reserved cast-in-place cavity (2), wherein the prefabricated single-sided composite shear wall panel (1) comprises a prefabricated wall panel (1-1), a reinforcement system (1-2), a pier (1-3) and a through hole (1-4), wherein the pier (1-3) and the prefabricated wall panel (1-1) are concrete piers integrally cast together, and a through hole (1-4) is arranged at the center of the pier (1-3) as a passage for the tension bolts to enter and exit. An integrated plate positioning bracket (3) is buckled on the end surface of the pier (1-3), and the other end of the integrated plate positioning bracket (3) is connected to the integrated plate back rib (7); the integrated plate positioning bracket (3) comprises an intermediate connecting plate (3-4) having bracket flanges (3-1) symmetrically connected at both ends in the length direction, the bracket flanges (3-1) being a continuous, hollow, rib-shaped grid structure, and the height of the bracket flanges (3-1) being the thickness of the steel bar protective layer of the concrete wall, which is 15 mm, so that When in use, the bottom surface of the integrated plate contacts the intermediate connecting plate (3-4), a bolt hole (3-6) is provided in the middle of the intermediate connecting plate (3-4) for passing the tension bolt (6), a receiving cavity (3-5) is provided on the integrated plate positioning bracket (3), the receiving cavity (3-5) is located between the two bracket flanges (3-1), the size of the receiving cavity (3-5) corresponds to the width of the pier (1-3), the receiving cavity (3-5) is buckled on the upper end surface of the pier (1-3), the upper end surface of the intermediate connecting plate (3-4) is vertically connected with two bracket side frames (3-2), the two bracket side frames (3-2) are symmetrically arranged, there is a certain distance between the two bracket side frames (3-2), for the tension bolt (6) to pass through, the two bracket side frames (3-2) constrain the horizontal position of the integrated plate, and the height thereof is not greater than the thickness of the integrated plate, a fixing ring (3-3) is provided on the upper end of the bracket side frame (3-2), a pin is inserted into the fixing ring (3-3) at the top of the positioning bracket side plate, and the integrated plate (5) is clamped; A blocking grate (4) is installed on the upper end surface of the intermediate connecting plate (3-4), the blocking grate (4) is located between the two supporting piers (1-3), one end of the blocking grate (4) is in contact with the integrated plate (5), and the other end is firmly tied to the steel bar system (1-2), and the end surface of the blocking grate (4) and the end surface of the integrated plate positioning bracket (3) are on the same horizontal plane; The blocking grate (4) is provided with a plurality of hollows (4-3), and the edges of the blocking grate (4) are provided with transverse ribs (4-2) and longitudinal ribs (4-1) for binding onto the steel bar system (1-2).

2. A structurally integrated prefabricated hollow wall without formwork removal as claimed in claim 1, characterized in that: A bolt hole (3-6) is provided at the center of the middle connecting plate (3-4), and the axis of the bolt hole (3-6) coincides with the symmetry center lines of the two bracket side frames (3-2).

3. A structurally integrated prefabricated hollow wall without formwork removal as claimed in claim 1, characterized in that: The tension bolts (6) are sequentially passed through the back rib (7), between the two bracket side frames (3-2), the bolt holes (3-6) and the buttresses (1-3) until they pass through the end surface of the prefabricated single-sided laminated shear wall panel (1) and are then locked.

4. The structurally integrated prefabricated hollow wall without formwork removal as claimed in claim 1, characterized in that: The integrated panel (5) is a layered structure, which comprises, from top to bottom, an outer layer structure (5-2), a fireproof and heat-insulating layer (5-1), and an inner surface layer (5-4), and the three-layer structure is fixedly connected by anchor nails (5-3).

5. The structurally integrated prefabricated hollow wall without formwork removal as claimed in claim 1, characterized in that: The prefabricated single-sided composite shear wall panel (1) is provided with a rough surface, the rough surface is opposite to the casting cavity (2), the rough surface is not less than 80% of the overall area, and the roughness is not less than 4.0 mm.

6. A construction method for a structurally integrated prefabricated hollow wall without formwork removal as claimed in claim 1, characterized in that Here are the steps:

1. Factory-made prefabricated composite wall panels; 2. Prepare the integrated panel fixing bracket: plastic parts or combined plastic parts; 3. Prepare sealing grates; 4. Preparation of decorative thermal insulation integrated panels: Traditional technology, the thickness, length and width of the panels are determined by the design and specification requirements; 5. Back rib preparation: entrusted to professional manufacturers for processing, made according to the force requirements, standard parts; 6. Installation; 6.1) The prefabricated composite wall panels are hoisted into place, temporary fixed support rods are installed, and the verticality of the wall is adjusted; 6.2) Lay a steel mesh of the wall at the end of the steel system (1-2) according to the design drawing requirements. The shear wall has two steel meshes, one of which has been pre-buried in the prefabricated wall panel, and the other is tied to the steel system (1-2). In this way, after pouring the in-situ concrete of the cavity (2) and overlapping with the integrated plate (5), a complete shear wall is formed; 6.3) Install the positioning bracket (3): First, tie it in place: the center of the positioning bracket (3) is aligned with the hole position of the pier (1-3), the bracket flanges (3-1) on both sides are tied firmly to the steel bar system (1-2), and holes are drilled according to the position of the hole in the pier to facilitate the passage of the tension bolts (6), and the hole position is centered; 6.4) Binding the sealing grate (4): The longitudinal ribs (4-1), transverse ribs (4-2) and the steel bar system (1-2) are firmly bound together, and the grate width can be adjusted at will; 6.5) Install the integrated board (5): Pre-cut the integrated board to the desired width according to the spacing between the two adjacent positioning bracket side panels, place it in place, and insert the pins into the fixing rings (3-3) at the top of the positioning bracket side panels to lock the integrated board (5); 6.6) Install the tension bolts and inner and outer back ribs from bottom to top; 6.7) A second layer of back ribs can be installed in weak areas; 6.8) Concrete pouring and curing; 6.9) Remove the back ribs and tension bolts; 6.10) Concrete wall hole plugging: traditional technology; 6.11) Insulation layer repair: mainly filling the space between the side baffles and leveling the whole; 6.12) External wall covering and decoration: traditional crafts; 6.13) Completed.

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