CN107297810A - A kind of making of precast wall body component and installation method - Google Patents

Abstract

The invention discloses a kind of making of precast wall body component and installation method, belong to technical field of building construction, the problem of solving traditional architecture low construction efficiency changes high energy consumption, the traditional mode of production mode of high pollution.There is framework of steel reinforcement and built-in fitting in precast wall body component, and be reserved with embedded bar hole, injected hole and steam vent, its preparation method：1）, first according to the appearance and size supporting module of precast wall body component；2）, framework of steel reinforcement and built-in fitting are placed in template；3）, concrete prepare with pouring；4）, precast wall body component steam curing；5）, precast wall body component the demoulding；6), precast wall body component is turned on one's side, erected；7）, precast wall body component inserts or by putting.The present invention carries out construction using precast wall body component, instead of traditional form of construction work, and architectural industrialization is realized in promotion, reduces energy resource consumption, reduces garbage emission, improves efficiency of construction, improves construction comprehensive quality, is easy to coordinated management.

Description

Method for making and installing prefabricated wall components

technical field

The invention relates to the technical field of building construction, in particular to a method for making and installing a prefabricated wall component.

Background technique

With the rapid development of the economy, all walks of life are constantly innovating, with the aim of saving energy, reducing pollution, and improving production efficiency, constantly breaking through the traditional production mode and moving towards a standardized structural system. my country's construction industry is still a labor-intensive traditional industry with relatively backward construction methods. Especially in the whole production process of house construction, the traditional construction mode of high energy consumption, high pollution, low efficiency and extensive is still common, which is different from the current new The development requirements of urbanization, industrialization, and informatization are not compatible, and there is a big gap compared with developed countries. In traditional building construction, the method of pouring concrete on site is generally used for construction. The traditional construction method has many disadvantages such as low technical integration ability, extensive management method, low labor quality and backward production methods.

In recent years, my country has gradually attached importance to the development of construction industrialization, and various places have successively put forward requirements for prefabricated buildings and green buildings. Building industrialization refers to the use of modern management models to realize the generalization of building components and the assembly and mechanization of on-site construction through standardized architectural design and modularized and industrialized parts production. Construction industrialization is conducive to promoting the transformation and upgrading of my country's construction industry and housing and urban-rural construction, and is an important measure to realize the national new urbanization development and energy conservation and emission reduction strategies.

At present, my country's construction industrialization is still in the initial stage. The production process and installation process of some finished and semi-finished prefabricated components have not been widely used due to technical problems, production management, collaborative installation and other processes. The traditional prefabricated wall is not effective in grouting, prone to grout leakage and other phenomena, the stability of the overall structure is not ideal, and at the same time, the production efficiency is low, the comprehensive quality is poor, the resource consumption is high, and it consumes a lot of manpower and material resources.

Contents of the invention

The technical task of the present invention is to provide a method for making and installing prefabricated wall components in view of the above deficiencies. During construction, the prefabricated wall components are directly installed to promote the realization of building industrialization and solve the problem of low construction efficiency and energy consumption of traditional buildings. High, unmanageable problems.

The technical solution adopted by the present invention to solve its technical problems is:

A method for making a prefabricated wall component, wherein the prefabricated wall component has a steel bar skeleton and embedded parts, and has pre-embedded steel bar holes, grouting holes and vent holes, and the manufacturing method is as follows;

1) First, support the formwork according to the external dimensions of the prefabricated wall components. The formwork is designed according to the prefabricated wall components, and the accuracy is controlled within 2mm; when the formwork is supported, it is necessary to pay attention to the flatness of the decorative surface, the position accuracy of the steel bars and embedded parts, the structural dimensional accuracy of the prefabricated wall components, and the ease of vibration and compaction.

When the template is installed, the template release agent must not leak or flow. The installation and fixing of the template must be straight, tight, not inclined, and the size must be accurate.

2) Place the reinforced skeleton and embedded parts in the formwork. When cutting, butt welding, and forming semi-finished steel bars, it is necessary to ensure that the size tolerance should not be greater than 1.5 times the allowable deviation, and the bending diameter of the bent and formed steel bars should be controlled. Since the wall components are plate components, the protective layer of the main reinforcement of the steel bars is relatively small, so a special forming frame should be used to form the steel bar skeleton to ensure accurate dimensions.

Reinforcing ribs shall be arranged at the openings, and the reinforcing ribs shall be bound at no less than three fixing points. The steel frame should be put into the mold lightly, and the steel frame should not be moved after being put into the mold. The steel frame should be cushioned or hung to meet the thickness of the protective layer of each part of the steel bar. When the steel bar is installed in the mold, ensure that the steel bar cage is straight and free of damage, and the surface must not have oil, granular or flaky old rust; when the steel bar is installed, the installation position of the steel bar mesh and the steel bar frame must not exceed the allowable deviation.

The installation position of the embedded parts, reserved holes and reserved holes fixed on the formwork shall not exceed the allowable deviation.

3) Preparation and pouring of concrete. All kinds of concrete materials are loaded into the mixer and the mixing time is not less than 90 seconds; the concrete is transported by lifting and distributing on the fixed formwork platform, and the torpedo tank feeding and automatic distributing machine are used in the assembly line production workshop. Method; each transportation volume should be compatible with the pouring volume and pouring speed, so as to ensure that the mixture has good workability during pouring.

Before the concrete is poured, the formwork shall be cleaned and the mold release agent shall be applied; when the concrete is poured and formed, the pouring time shall not exceed 30 minutes, and the compression test blocks and the same condition curing test blocks shall be retained and tested according to the regulations for each batch. The concrete should be vibrated densely.

4) For steam curing of prefabricated wall components, after concrete pouring, stop for not less than 2 hours, heat up for not less than 2 hours, and the heating rate is not greater than 15°C/hour; keep the temperature for not less than 4 hours, and the temperature range for constant temperature curing is 55°C~ 60°C; the cooling rate is not less than 3 hours, and the cooling rate is not greater than 10°C/hour.

5) Demoulding. When the prefabricated components reach 75% of the design value of the concrete compressive strength and not less than 15N/mm, the demoulding strength is subject to the test results of the compressive strength of the test blocks cured under the same conditions in the laboratory. Remove the mold according to the mold structure and removal sequence to avoid damage to the prefabricated wall components, and the formwork must not be removed by vibrating components. Use external force to push the prefabricated wall components first to separate them from the mold, and rinse the water-washed surface after demoulding. The prefabricated wall components should be lifted out of the mold by flat lifting, and the lifting points should be lifted at 4 to 6 points. Coding is carried out at a conspicuous position of the component, and the coding should be made of removable materials such as water-based environmental protection paint or plastic molding.

6) After the components are turned sideways and erected, they are transported to the storage yard. The prefabricated wall components are transported vertically, and can be stored vertically with the aid of stacking racks.

7) The prefabricated wall components are inserted or leaned on, and the stacking frame has sufficient rigidity, and the pads are stable. The stacking yard connects the adjacent stacking racks into a whole, and the prefabricated exterior wall panels face outwards. For weak parts such as connecting waterstops, high and low openings, and wall corners, use shaped protective pads or special accessories to strengthen protection .

Further, the embedded parts include long nuts, steel wire ropes, steel rings and umbrella handle hooks, wherein,

For the pre-embedding of the long nut, the pre-embedded end of the long nut is welded and fixed with a horizontal auxiliary steel bar, and the horizontal steel bar is fixed to the inner reinforcement of the plate by binding iron wires;

Pre-embedding of steel wire rope, the two pre-embedded ends of the steel wire rope are spread out, and the spread length is greater than 400mm. The loose part is bound and fixed to the inner rib of the plate with iron wires, and each group of three strands is lapped and fixed with the inner rib of the plate, and auxiliary ribs are provided. Limit the wire rope;

The pre-embedding of the steel ring, the steel ring is an open steel ring, the two fixed feet at the open end are fixed to the inner ribs of the plate, and auxiliary ribs are set to assist positioning;

The umbrella handle hook is pre-embedded, and the hook end hooks the inner rib of the board to fix it.

Further, the prefabricated wall components include prefabricated shear wall components and prefabricated partition wall components, and the embedded parts of the prefabricated shear wall components also include prefabricated iron boxes, and one side of the prefabricated iron box is exposed outside the wall of the prefabricated shear wall components , and the exposed part is provided with an installation hole, which is used as a fixed joint of the prefabricated partition wall component; the embedded part of the prefabricated partition wall component also includes at least two connecting bolts, and the diameter of the connecting bolt is smaller than the minimum size of the installation hole ; Prefabricated partition wall components and prefabricated shear wall components are fixed by connecting bolts and pre-embedded iron boxes. The prefabricated partition wall components are also reserved with pipeline interface grooves and floor grooves, which are used for the embedded pipeline connection and floor slab installation of the prefabricated partition wall components.

Further, the prefabricated partition wall component is also pre-embedded with at least two φ6 anchoring steel bars, which are used for anchoring the prefabricated partition wall component and the cast-in-situ wall.

Further, the embedded parts of the prefabricated shear wall components also include screw sleeves for fixing the expansion bolts. The screw sleeves are used to place the expansion bolts when the shear wall is installed with braces. The screw sleeves are embedded horizontally, and one end It is flush with the wall to facilitate the placement of expansion bolts.

Further, the steam curing method includes a three-dimensional curing kiln and a push-pull folding curing cover. For the components produced in the automatic assembly line workshop, the three-dimensional curing kiln is used for steam curing, and the temperature and humidity are automatically monitored and controlled; for the components produced on the fixed mold table, the push-pull folding curing cover is used for steam curing. 0.5 hours for temperature and humidity measurement and control.

The manufacturing method of the prefabricated wall component is also applicable to the production of prefabricated stairs, prefabricated balconies, and prefabricated air-conditioning panels.

A prefabricated wall component, including a prefabricated shear wall component and a prefabricated partition wall component, which is formed by pouring concrete using a mold. The prefabricated wall component has a steel skeleton and embedded parts, and the embedded parts include long nuts, steel wire ropes, steel Ring and umbrella handle hook; and pre-embedded steel holes, grouting holes and vent holes are reserved. Among them, the embedded parts of the prefabricated shear wall components also include a pre-embedded iron box, one side of the pre-embedded iron box is open and exposes the prefabricated wall, and the exposed part is provided with bolt connection holes. The embedded part of the prefabricated partition wall component also includes at least two connecting bolts and anchoring steel bars, and the diameter of the connecting bolts is smaller than the minimum size of the bolt installation hole. The connecting bolt is used to connect with the pre-embedded iron box, thereby connecting the prefabricated partition wall component and the prefabricated shear wall component; the anchoring steel bar is used for anchoring the prefabricated partition wall component and the cast-in-situ wall.

The prefabricated partition wall component is also reserved with a pipeline interface groove and a floor groove, the pipeline interface groove is used for pipeline installation of the prefabricated partition wall component, and the floor slab groove is used for the installation of the prefabricated partition wall component and the floor slab.

A method for installing a prefabricated wall component. The prefabricated wall component produced by the above-mentioned manufacturing method and the above-mentioned prefabricated wall component are installed on site. The installation steps are as follows:

1) Determine the location of the lower shear wall inserting ribs, measure and set out the line, and place the elevation block; when measuring and setting out the line, you should first determine the four reference outer corner points of the positioning axis of the first floor, and use the four reference outer corner points to release the outside of the floor around the floor. For the axis of the wall, place the position lines of the four outer wall corners first, and then the position lines of the middle wall of the outer wall, first place the position lines of the three inner walls of the stairwell, and then place the position lines of other inner walls; Enlarge the position line of the wall, then place the position line of the small wall; place the position line of the load-bearing wall first, and then place the position line of the non-bearing wall. When releasing the control axis around the outer edge of the prefabricated wall components, ensure that the large corners of the outer walls form 900 square meters at the corners. Then release the position control line of each wall and level the elevation control block of each wall. The elevation control block under each wall should be no less than 2 pieces.

Use the level gauge to control the surface elevation of the cushion block under the prefabricated wall by using the floor elevation control point.

2) Hoist the prefabricated shear wall components, so that the inserted ribs reserved for the lower shear wall enter the hoisted prefabricated shear wall components. After the components are installed in place, they coincide with the control lines that have been ejected in advance.

3) Install diagonal braces. The location of the diagonal braces is set at 2/3 of the wall. The angle between the diagonal braces and the horizontal line ranges from 55° to 65°. At least 2 diagonal braces are installed for each prefabricated shear wall component;

The two ends of the diagonal brace are respectively fixed with the prefabricated shear wall components and the floor slab with expansion bolts. The prefabricated shear wall components are placed with expansion bolts through the pre-embedded screw sleeves, and the floor slab is drilled with an electric drill to place the pre-embedded bolts. Use the fine-tuning function of the fixed diagonal brace to adjust the verticality of the wall; the applied diagonal brace mainly has two functions of tension and compression.

4) To seal the lower seam of the wall, pre-glue the water-swellable water-stop strip with a width of 1.5 to 1.8 times to the horizontal seam of the outer wall. If a lap joint is used, the lap joint width shall not be less than 30mm, and then seal and send Foam sealant, then caulk with sealant, twist 1:2 dry hard cement mortar at the bottom; temporarily fix the vertical joints from the inside of the gap with lath, apply foam glue, caulk with sealant, and apply glass fiber grid outside Anti-crack reinforcement surface of cloth;

When the flat seam is too wide or the staggering of the wall panel is too large, the bottom of the wall panel can be cleaned first and watered to moisten it. However, shielding measures such as isolation strips should also be taken to prevent the mortar from entering the bottom of the wall and weakening the section size. Then block it with fine stone concrete, and then twist 1:2 dry hard mortar, and twist the plug tightly to avoid grout leakage during grouting.

5) Binding of prefabricated shear walls with post-pouring steel bars, place the post-casting belt welding steel bar ring first, then place the vertical main bars, then tie the reserved main bars of the lower wall with the main bars of this layer, horizontal stirrups and main bars and The prefabricated shear wall component walls reserve horizontal ring bars for binding.

6) Prefabricated shear wall post-cast strip support formwork, including one-shaped wall post-cast strip support formwork, corner wall post-cast strip support formwork and T-shaped wall post-cast strip support formwork, the template is made of plywood , with a 60×60 wooden square, fixed with through-wall bolts.

7) Determine the location of the ribs on the lower partition wall, hoist the prefabricated partition wall components, and make the reserved ribs on the lower layer enter the hoisted prefabricated partition wall components. After the components are installed in place, they coincide with the pre-release control lines.

8) The connection between the prefabricated partition wall components and the adjacent installed prefabricated shear wall components is connected by bolts, and at least two connecting bolts embedded in the prefabricated partition wall components are connected with the pre-embedded iron box in the prefabricated shear wall components . The overall connection between the iron box and the prefabricated shear wall is firm, and one side of the iron box is exposed to the outside of the wall to leave a hole, and the hole should be slightly larger for easy adjustment. Place a gasket with the same wall thickness as the iron box and slightly larger than the hole between the bolt and the iron box. When installing on site, tighten the bolts after the elevation, level and vertical of the prefabricated partition are in place.

9) The connection between the prefabricated partition wall components and the adjacent cast-in-place wall is anchored by pre-embedded steel bars, and the two φ6 anchor bars pre-buried in the partition wall are anchored to the cast-in-place wall;

10) The prefabricated partition wall components are connected by pre-embedded pipelines. The lower part of the prefabricated partition wall components is reserved with pipeline joint grooves. The pipeline of the component is connected with the pipeline of the lower layer; the reserved pipeline joint of the prefabricated partition wall component is connected with the pipeline laid in the cast-in-place slab at the junction of the upper laminated slab, and the joint is tightly wrapped with tape.

11) The prefabricated partition wall components are installed with the floor slab. The prefabricated partition wall components are reserved with floor grooves, and corresponding grooves are also reserved at the corresponding positions of the floor slabs. After the prefabricated partition wall components are installed, smooth the grooves with cement mortar .

12) After the prefabricated partition wall components are installed, seal the surroundings with mortar. For the installation of the wall, especially the exterior wall, the local installation is not standardized, and the leakage of cement slurry is prone to occur at the joints, which seriously affects the appearance of the wall. Therefore, it is formulated that the external corners of the external wall should be manufactured and formed at one time, so that the external thermal insulation and the wall concrete can be integrated, the process can be simplified on site, and the common problems such as wall production and installation, cement slurry leakage and wall appearance can be effectively controlled. Improved.

13) Carry out vertical hole grouting hole grouting of prefabricated wall components and prefabricated shear wall post-casting tape pouring; the cavity in the post-casting tape is cleaned with a high-power vacuum cleaner, and the base layer and post-casting tape before concrete pouring It must be well moistened with water.

14), Concrete curing and demoulding.

Preferably, the upper and lower ends of the diagonal brace are respectively fixed to the prefabricated shear wall component and the floor with expansion bolts, the upper part of the diagonal brace is fixed by the pre-embedded bolt sleeve in the prefabricated shear wall component and the expansion screw is placed, and the lower part of the diagonal brace is fixed by the expansion bolt Drive into the floor to fix.

Preferably, the lower shear wall insertion bars are ladder bars, and the specifications and dimensions of the main bars of the ladder bars are determined according to the pre-embedded reinforcement holes of the prefabricated shear wall components.

Compared with the prior art, a method for making and installing a prefabricated wall component of the present invention has the following beneficial effects:

Realize the integration and refinement of design, production and construction, and form integrated technology through standardization and assembly. On-site assembly, high production efficiency, and reduced labor costs; assembly and installation can control errors to the millimeter level, and the wall has no leakage or cracks; indoors can achieve 100% no plastering; construction can save water, materials, Energy saving, reducing the generation of garbage, reducing the use of scaffolding and support frames; there is basically no dust, waste water, and noise on the construction site, further protecting the environment;

Effectively combine design standardization, product industrialization, and operation mechanization to replace traditional manual building construction. With the help of information technology, use the method of overall comprehensive integration to organize the entire process of engineering construction, so that design, procurement, construction, mechanical equipment and The labor force achieves a more optimized combination of resource allocation, adopts the organization and management model of general contracting, plays the most effective role within a limited time, improves the utilization efficiency of resources, and creates greater utility value.

Description of drawings

Fig. 1 is the production flowchart of prefabricated wall body member;

Figure 2 is a schematic diagram of the binding and fixing of the embedded long nut;

Fig. 3 is the fixed sketch map of embedded wire rope;

Figure 4 is a schematic diagram of fixing the embedded steel ring;

Fig. 5 is the fixing sketch map of embedded umbrella handle hook;

Fig. 6 is a schematic diagram of the installation of the diagonal brace of the shear wall member;

Fig. 7 is a schematic diagram of the post-cast belt formwork structure of the in-line shear wall;

Fig. 8 is a schematic diagram of the post-cast belt formwork structure of the shear wall at the corner;

Fig. 9 is a schematic diagram of the post-cast belt formwork structure of the T-shaped shear wall.

In the figure: 1. Long nut, 2. Iron wire, 3. Inner reinforcement of the plate, 4. Steel wire rope, 4-1 steel wire rope spreading section, 5. Auxiliary reinforcement, 6. Steel ring, 7. Umbrella handle hook, 8. Prefabricated shear Force wall components, 9. Embedded screw sleeves, 10. Expansion bolts, 11. Prefabricated laminated slabs, 12. Cast-in-place floor slabs, 13. Diagonal braces, 14. Steel pipes, 15. Plastic sleeves, 16. Pull bolts, 17, cement stays, 18, fixed nuts, 19, 3 word buckles, 20, formwork.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

A method for making a prefabricated wall component, wherein the prefabricated wall component has a steel bar skeleton and embedded parts, and has pre-embedded steel bar holes, grouting holes and vent holes, and the manufacturing method is as follows;

1) First, support the formwork according to the external dimensions of the wall; design the mold according to the design drawings of the concrete components, and control the precision of the mold within 2mm. , Prefabricated component structural dimensional accuracy requirements and easy vibration compaction.

When installing the formwork, it is necessary to pay attention that the formwork must be cleaned, the formwork release agent must not leak or flow, the installation and fixation of the formwork must be straight, tight, not inclined, and the size must be accurate.

2) Place the steel bar skeleton and embedded parts in the formwork. When cutting, butt welding, and forming semi-finished steel bars, it is necessary to ensure that the size tolerance should not exceed 1.5 times the allowable deviation. The bending diameter of the bent steel bars should be controlled; because Wall components belong to plate components, and the protective layer of the main reinforcement of the steel bar is relatively small. Therefore, the skeleton size of the steel bar must be accurate, so a special forming frame should be used for forming; the types of steel bars, accessories and embedded parts in the finished steel bar (skeleton), Specifications, quantity and location shall comply with relevant standards and requirements of design documents. Reinforcing ribs shall be arranged in openings according to drawing requirements, and there shall be no less than three binding and fixing points for reinforcing ribs. The steel frame should be put into the mold lightly, and the steel frame should not be moved after it is put into the mold. The steel frame should be cushioned, hung, etc. to meet the thickness of the protective layer of each part of the steel; when the steel is installed in the mold, ensure that the steel cage is straight and free There must be no oil stains, granular or flaky old rust on the surface; when the steel bars are installed, the installation positions of the steel mesh and finished steel bars (skeleton) must not exceed the allowable deviation.

The installation position of the embedded parts, reserved holes and reserved holes fixed on the formwork shall not exceed the allowable deviation.

3) For the preparation and pouring of concrete, the concrete is mixed according to the concrete mix list and specified materials in the laboratory, and the weight deviation of each material is within the specified range. All kinds of concrete materials are loaded into the mixer and the mixing time for discharging is not less than 90 seconds. The concrete is transported on the fixed formwork by lifting and distributing. In the assembly line production workshop, torpedo tank feeding and automatic distributing machine are used. The method, each transportation volume should be adapted to the pouring volume and pouring speed, so as to ensure that the mixture has good workability during pouring.

Before pouring concrete, check molds, brackets, steel bars and embedded parts. The formwork should be cleaned and painted with release agent; when pouring and forming, ensure that the pouring time does not exceed 30 minutes, and ensure that it is smooth and smooth with edges and corners during production and molding. And the compactness is guaranteed. For each batch, the reserved samples and tests of the compression test blocks and the same condition curing test blocks should be done according to the regulations.

The concrete should be vibrated densely.

4) Steam curing of prefabricated wall components. After concrete pouring, stop for not less than 2 hours, heat up for about 2 hours, and the heating rate is not more than 15°C/hour; constant temperature is 4 hours, and the temperature range of constant temperature curing is 55°C~60°C ;The cooling time is 3 hours, and the cooling rate is not more than 10°C/hour.

For the components produced in the automatic assembly line workshop, the three-dimensional curing kiln is used for steam curing, and the temperature and humidity are automatically monitored and controlled.

For the components produced on the fixed mold table, the push-pull folding curing cover is used for steam curing, and special personnel are arranged to measure and control the temperature and humidity every 0.5 hours.

5) Demoulding, when the prefabricated wall components reach 75% of the design value of the concrete compressive strength and not less than 15N/mm, the demoulding strength is based on the test results of the compressive strength of the test block under the same conditions in the laboratory. allow.

Remove the mold according to the mold structure and removal sequence to avoid damage to the prefabricated components, and do not use vibration components to remove the mold. Use external force to push the component first to separate it from the mold, and rinse the water-washed surface after demoulding. Remove the excess concrete slag on the edge of the wall panel, and the components are lifted out of the mold. Before lifting the prefabricated wall components, it is necessary to confirm that the connection between the component and the mold is completely removed, so as to avoid excessive adsorption between the component and the mold and cause the protective layer to be damaged. If it is damaged, the lifting point should be lifted at 4 to 6 points.

Establish a coding system for prefabricated components, and code according to the coding scheme at the conspicuous position of the components, and use water-based environmental protection paint or plastic molding and other removable materials for coding.

6) After the components are turned over and erected, they are transported to the storage yard. The prefabricated wall components are transported vertically, and can be placed flat or assisted by stacking racks. Prefabricated wall components are transported on low-bed vehicles with special racks and reliable measures to stabilize components. The concrete strength of the prefabricated wall components can only be transported outside when the strength reaches the design strength.

7) The prefabricated wall components are inserted or leaned on, and the stacking frame has sufficient rigidity, and the pads are stable. The stacking yard connects the adjacent stacking racks into a whole, and the prefabricated exterior wall panels face outwards. For weak parts such as connecting waterstops, high and low openings, and wall corners, use shaped protective pads or special accessories to strengthen protection .

Wherein, the embedded part of the prefabricated wall component includes a long nut 1, a steel wire rope 4, a steel ring 6 and an umbrella handle hook 7,

For the pre-embedding of the long nut 1, the pre-embedded end of the long nut 1 is welded and fixed with a transverse auxiliary reinforcement 5, and the lateral auxiliary reinforcement is bound and fixed to the inner rib 3 of the panel by iron wire 2, as shown in Figure 2;

Pre-embedding of steel wire rope 4, the two pre-embedded ends of steel wire rope 4 are spread out, the spread length of steel wire rope spread out section 4-1 is greater than 400mm, and the spread out part is bound and fixed to panel inner reinforcement 3 with iron wire 2, and each set of three strands It is lapped and fixed with the inner rib 3 of the plate, and an auxiliary rib 5 is provided to limit the position of the steel wire rope 4, as shown in Figure 3;

The pre-embedding of the steel ring 6, the steel ring 6 is an open steel ring, the two fixed feet at the open end are fixed to the ribs 3 inside the plate, and the auxiliary ribs 5 are set to assist positioning, as shown in Figure 4;

The pre-embedding of the umbrella handle hook 7, the hook end hooks the rib 3 in the plate and fixes it, as shown in Figure 5.

Prefabricated wall components include prefabricated shear wall components and prefabricated partition wall components. The embedded parts of prefabricated shear wall components also include prefabricated iron boxes. Some installation holes are provided for the fixed connection of the prefabricated partition wall components; the embedded parts of the prefabricated partition wall components also include at least two connecting bolts, and the diameter of the connecting bolts is smaller than the minimum size of the installation hole; the prefabricated partition wall components When the wall components and the prefabricated shear wall components are fixed, the connecting bolts and the pre-embedded iron boxes are used for fixing.

The prefabricated partition wall components are also reserved with pipeline interface grooves and floor grooves, which are used for the embedded pipeline connection and floor slab installation of the prefabricated partition wall components.

The prefabricated partition wall component is also pre-embedded with at least two φ6 anchoring steel bars, which are used for anchoring the prefabricated partition wall component and the cast-in-place wall.

The embedded parts of prefabricated shear wall components also include screw sleeves for fixing expansion bolts. The screw sleeves are used to place expansion bolts when the shear wall is installed with braces. Flat, easy to place expansion bolts.

A prefabricated wall component, including a prefabricated shear wall component and a prefabricated partition wall component, which is formed by pouring concrete using a mold. The prefabricated wall component has a steel skeleton and embedded parts, and the embedded parts include long nuts, steel wire ropes, steel Ring and umbrella handle hook; and pre-embedded steel holes, grouting holes and vent holes are reserved. Among them, the embedded parts of the prefabricated shear wall components also include a pre-embedded iron box, one side of the pre-embedded iron box is open and exposes the prefabricated wall, and the exposed part is provided with bolt connection holes. The embedded part of the prefabricated partition wall component also includes at least two connecting bolts and anchoring steel bars, and the diameter of the connecting bolts is smaller than the minimum size of the bolt installation hole. The connecting bolt is used to connect with the pre-embedded iron box, thereby connecting the prefabricated partition wall component and the prefabricated shear wall component; the anchoring steel bar is used for anchoring the prefabricated partition wall component and the cast-in-situ wall.

The prefabricated partition wall component is also reserved with a pipeline interface groove and a floor groove, the pipeline interface groove is used for pipeline installation of the prefabricated partition wall component, and the floor slab groove is used for the installation of the prefabricated partition wall component and the floor slab.

A method for installing a prefabricated wall component. The prefabricated wall component made by the above-mentioned manufacturing method and the above-mentioned prefabricated wall component are installed on site. The preparatory work before installation includes:

According to the hoisting and construction requirements of prefabricated components, determine the form of scaffolding outside the site, such as using an external cantilever frame, specify the reserved channel steel position and opening position, and the pouring position of the wall;

Reserve the location of the opening for the release of wires in the floor, and reserve a 20cm×20cm square hole directly above the four reference outer corners of the current floor, so that the theodolite can reference the reference points of the lower floor when the axis of the upper floor is positioned and the release is made. According to the given datum line and datum point in the plan, compound inspection is carried out on the control line of the incoming floor, the axis and the elevation of the control point.

Mark the axis position on the prefabricated components to facilitate the control of the installation direction.

Determine the location of the first-floor prefabricated shear wall reinforcement. According to the prefabricated wall components, the holes for inserting ribs are reserved to fix the position of the inserting ribs, and the ladder ribs are welded with the same main rib specifications as the shear wall design, and the position of the first row of main ribs of the ladder ribs is controlled during on-site construction.

The joint surface of the prefabricated components and the concrete base should be chiseled before the components are installed, the surface laitance should be removed, and the surface should be sprinkled and wetted, that is, the base surface should be treated according to the concrete construction joints. The concrete strength of precast concrete components during installation shall not be lower than 75% of the design strength grade value of concrete cured under the same conditions.

The installation steps are as follows:

1) Determine the location of the lower shear wall to insert reinforcement, measure and set out the line, and place the elevation block;

When measuring and setting out the line, first determine the four reference outer corner points of the positioning axis on the first floor, that is, the intersection point of the vertical line 1m away from the two adjacent outer axes, and use the theodolite to introduce it from the surrounding gantry piles, or use the total station to locate it from the GPS coordinates on the spot The reference point is introduced; the floor elevation control point is introduced from the on-site benchmarking point with a level gauge.

Carry out the positioning and laying out of the first floor, and use theodolite to use the introduced four reference outer corner points to release the axis of the outer wall around the floor. After the axis is rechecked and correct, it will be used as the baseline of this layer.

Taking the axis of the surrounding exterior walls as the reference line, use a 5m steel tape to release the installation position line of the exterior wall. Place the position lines of the four exterior corners first, and then place the position lines of the middle wall of the exterior wall.

After the surrounding outer wall position lines are placed, use this as the control line, and use a 50m steel tape measure as a tool to place the inner wall position lines. First place the position lines of the three interior walls in the stairwell, and then place the other interior wall position lines; first enlarge the wall position lines, and then place the small wall position lines; first place the load-bearing wall position lines, and then place the non-load-bearing wall position lines.

Accurately release the door opening line at the reserved door opening.

On the inner side of the outer wall, let out the wall installation control line at 20cm on both sides of the inner wall.

Use the level gauge to control the surface elevation of the cushion block under the prefabricated wall by using the floor elevation control point.

After the prefabricated wall components are installed, use the level gauge to use the floor elevation control point to release the 50 control line on the wall, and use it as the installation elevation control line for prefabricated composite beams, slabs and cast-in-place slab formwork.

When releasing the control axis around the outer edge of the prefabricated wall components, ensure that the large corners of the outer walls form 900 square meters at the corners. Then release the position control line of each wall and level the elevation control block of each wall. The elevation control block under each wall should be no less than 2 pieces.

Elevation control block placement method: First, grind one side of the block with an angle grinder (the length of the block is less than 2mm of the wall), place the block with mortar, adjust the surface elevation of the block with the level gauge and the ruler, and wait for the strength of the block to be maintained. Only when the requirements are met can the prefabricated wall components be hoisted.

2) When hoisting the prefabricated shear wall structure, the angle between the sling and the horizontal line is not less than 60°, and it falls slowly to the installation site at 0.5 meters. The hoisting of the wall components requires three people to align and straighten the wall components, so that the inserted ribs reserved for the lower shear wall enter the hoisted prefabricated shear wall components. After the components are installed in place, they coincide with the pre-release control lines.

3) As shown in Figure 6, install the diagonal brace 13. The position of the diagonal brace 13 is set at 2/3 of the wall of the prefabricated shear wall member 8. The angle between the diagonal brace 13 and the horizontal line ranges from 55° to 65°. The block prefabricated shear wall member 8 is provided with at least two diagonal braces 13;

Both ends of the diagonal brace 13 are respectively fixed with the prefabricated shear wall member 8 , the cast-in-place floor slab 12 and the prefabricated laminated slab 11 with expansion bolts 10 . The prefabricated shear wall member 8 places expansion bolts 10 through the prefabricated screw sleeve 9, and the prefabricated laminated plate 11 is drilled with an electric drill to place the prefabricated bolts 10. Expansion bolt 10 is fixed with cast-in-place floor slab 12 and prefabricated laminated slab 11, and the length of expansion bolt 10 is easily 9cm, guarantees that expansion bolt 10 enters 3cm in prefabricated laminated slab 11. Use the fine-tuning function of the diagonal brace 13 to adjust the verticality of the prefabricated shear wall component 8; the applied diagonal brace 13 mainly has two functions of tension and compression, and the diagonal brace 13 is uniformly fixed on one side of the prefabricated shear wall component, leaving Aisle for easy transportation of other items.

4) To seal the lower seam of the wall, glue the water-swellable water-stop strip 1.5 to 1.8 times the width of the seam to the horizontal seam of the outer wall in advance. When adopting lap joint connection, the lap joint width shall not be less than 30mm, and then seal and foam Sealant, and then caulk with sealant; the perimeter is tight and must not bulge or crack. Lay 1:2 dry hard cement mortar on the bottom of the outer wall (inner wall) board. The vertical seam is temporarily fixed from the inside of the seam with slats, and after applying styrofoam, caulk the seam with 20 thick sealant, and apply a 100mm wide glass fiber mesh cloth anti-crack reinforcement surface. After the wall board is in place, it must reach the upper and lower boards. It is vertical and flat, and the height of the spacer is suitable. The expansion water-stop strip with 1.5~1.8 times the joint width is used as the base form of the joint mortar.

When the flat seam is too wide or the staggering of the wall panel is too large, the bottom of the wall panel can be cleaned first and watered to moisten it. However, shielding measures such as isolation strips should also be taken to prevent the mortar from entering the bottom of the wall and weakening the section size. Then use fine stone concrete to seal, and then twist 1:2 dry hard mortar, and twist the plug tightly to avoid grout leakage during grouting.

5) For the binding of post-cast steel bars on the shear wall, first place the post-cast steel bar rings, then place the vertical main bars, then tie the reserved main bars of the lower wall with the main bars of this layer, and the horizontal stirrups with the main bars and the wall The body reserves horizontal ring bars for binding. The 3~4 stirrups at the lower part of the hidden column can be " ” shapes to connect.

6) Post-cast belt formwork for shear walls, including one-shaped wall post-cast belt formwork, corner wall post-cast belt formwork and T-shaped wall post-cast belt formwork, respectively corresponding to Figure 7 , shown in Fig. 8 and Fig. 9, formwork 20 adopts plywood, uses pull bolt 16 to coordinate steel pipe 14, fixed nut 18 and 3 character buckle 19 and formwork 20 is fixed, and pull bolt 16 is peripherally equipped with plastic casing 15, formwork 20 Concrete stay 17 is arranged as support in the interior. Figure 7 shows the post-cast formwork structure of the one-shaped wall, Figure 8 shows the post-cast formwork structure of the corner wall, and Figure 9 shows the T-shaped wall post-cast formwork support structure.

7) Determine the location of the reinforcement for the lower partition wall, hoist the prefabricated partition wall components, and make the reserved reinforcement for the lower layer enter the hoisted prefabricated partition wall components;

8) The connection between the prefabricated partition wall components and the adjacent installed prefabricated shear wall components is connected by bolts, and at least two connecting bolts embedded in the prefabricated partition wall components are connected with the pre-embedded iron box in the prefabricated shear wall components : The overall connection between the iron box and the prefabricated shear wall is firm, and one side of the iron box is exposed outside the wall to leave a hole, and the hole should be opened slightly larger for easy adjustment. Place a gasket with the same wall thickness as the iron box and slightly larger than the hole between the bolt and the iron box. When installing on site, tighten the bolts after the elevation, level and vertical of the prefabricated partition are in place.

9) The connection between the prefabricated partition wall components and the adjacent cast-in-place wall is anchored by pre-embedded steel bars, and the two φ6 anchor bars pre-buried in the partition wall are anchored to the cast-in-place wall;

10) The pre-embedded pipeline connection of the prefabricated partition wall component, the lower part of the prefabricated partition wall component is reserved with a pipeline joint groove, 10cm wide x 20cm high x 5cm thick, and the embedded pipeline in the prefabricated partition wall component wall is in the groove The joints are thrown out at the joints to connect the pipelines of the prefabricated partition wall components to the lower pipelines; the reserved pipeline joints of the prefabricated partition wall components are connected to the pipelines laid in the cast-in-place slab at the junction of the upper laminated slabs, and the joints are wrapped tightly with adhesive tape .

11) Install prefabricated partition wall components and floor slabs. Prefabricated partition wall components are reserved with 2cm floor grooves, and corresponding 2cm grooves are also reserved at the corresponding positions of the floor slabs. After the prefabricated partition wall components are installed, smooth them with cement mortar. said groove;

12) After the prefabricated partition wall components are installed, seal the surroundings with mortar.

13) Carry out vertical hole grouting of prefabricated wall components and pouring of post-casting strips of shear walls; the cavity in the post-casting strips shall be cleaned with a high-power vacuum cleaner, and the base and post-casting strips must be fully moistened with water before concrete pouring .

14), Concrete curing and demoulding.

Through the above specific implementation manners, those skilled in the technical field can easily realize the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. On the basis of the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features, so as to realize different technical solutions.

Except for the technical features described in the instructions, all are known technologies by those skilled in the art.

Claims (10)

1. a kind of preparation method of precast wall body component, it is characterised in that there is framework of steel reinforcement and pre-buried in precast wall body component Part, and embedded bar hole, injected hole and steam vent are reserved with, its preparation method is as follows：

1）, first according to the appearance and size supporting module of precast wall body component；

2）, framework of steel reinforcement and built-in fitting are placed in template；

3）, concrete prepare with pouring, brushing releasing agent before concreting；During pouring pounding molding, the time is poured no more than 30 points Clock, concrete vibrating；

4）, precast wall body component steam curing, after concreting, it is quiet stop be not less than 2 hours, heating be not less than 2 hours, heating Speed is not more than 15 DEG C/h；Constant temperature is not less than 4 hours, and thermostatic curing temperature range is at 55 DEG C ~ 60 DEG C；Cooling is small not less than 3 When, cooling rate is not more than 10 DEG C/h；

5）, precast wall body component the demoulding, precast wall body component reaches the 75% of concrete crushing strength design load, and is not less than It is stripped during 15N/ mm；

6), precast wall body component is turned on one's side, erected；

7）, precast wall body component inserts or by putting.

2. the preparation method of a kind of precast wall body component according to claim 1, it is characterised in that the built-in fitting includes Long nut, steel wire rope, steel loop or umbrella stem hook,

Long nut it is pre-buried, the pre-buried end of long nut is welded with horizontal auxiliary bar, and horizontal auxiliary bar passes through iron wire colligation It is fixed on muscle in plate；

Steel wire rope it is pre-buried, two pre-buried end ends of steel wire rope are scattered, and fall-out length is more than 400mm, and ravel tied up with iron wire Bundle is fixed on muscle in plate；

Steel loop it is pre-buried, steel loop be opening steel loop, openend two fix pin be fixed on muscle and auxiliary bar in plate；

Umbrella stem hook it is pre-buried, hook end catches on muscle in plate and fixed.

3. a kind of preparation method of precast wall body component according to claim 1 or 2, it is characterised in that the precast wall body Component includes precast shear wall component and prefabricated partition wall component, and the built-in fitting of precast shear wall component includes pre-buried can, pre-buried Can one side opening is exposed at outside precast shear wall component, and exposed parts offer installation hole；Prefabricated partition wall component it is pre-buried Part includes at least two connecting bolts, and the diameter of the connecting bolt is less than the minimum dimension of the installation hole, prefabricated partition wall Component is also reserved with pipeline interface groove and floor groove.

4. the preparation method of a kind of precast wall body component according to claim 3, it is characterised in that prefabricated partition wall component is also It is embedded with the anchor bars of at least two φ 6.

5. a kind of preparation method of precast wall body component according to claim 3, it is characterised in that precast shear wall component Built-in fitting also include for fixed expansion bolt screw socket.

6. a kind of preparation method of precast wall body component according to claim 1, it is characterised in that steam curing mode bag Include three-dimensional curing kilns and push-pull folding curing cover.

7. a kind of precast wall body component, including precast shear wall component and prefabricated partition wall component, it is characterised in that it uses mould Formed by concreting, there is framework of steel reinforcement and built-in fitting, and be reserved with embedded bar hole, slip casting in precast wall body component Hole and steam vent；Wherein, the built-in fitting of precast shear wall component includes pre-buried can, and pre-buried can one side is open and exposed prefabricated Wall, exposed parts open up bolt connection hole；The built-in fitting of prefabricated partition wall component includes at least two connecting bolts and anchoring Reinforcing bar, the diameter of the connecting bolt is less than the minimum dimension in the bolt mounting holes hole, and prefabricated partition wall component is also reserved with pipe Line interface groove and floor groove.

8. a kind of installation method of precast wall body component, it is characterised in that to the making described in any one in claim 1~6 The precast wall body component that method is made carries out in-site installation, and installation steps are as follows：

1）, determine lower floor's shear wall joint bar position, surveying setting-out lays absolute altitude cushion block；

2）, hoisting prefabricated shearing wall member, lower floor shear wall reserved joint bar is entered in the precast shear wall component of lifting；

3）, diagonal brace is installed, diagonal brace position is arranged at the 2/3 of wall, diagonal brace and horizontal line angular range 55 °~65 °, every piece Precast shear wall body component sets at least two diagonal brace；

4）, stitch under block wall, the water expandable waterstop of 1.5~1.8 times of slit widths is cemented in exterior wall horizontal joint position in advance, so Envelope dismisses bubble fluid sealant afterwards, then uses sealing compound filleting；Vertical seam is fixed temporarily from the inside of gap using lath, injection foamed glue, Sealing compound filleting is used again, and external application glass fiber reticular cloth cracking resistance strengthens face；

5）, the reinforcing bar colligation of shear wall post-cast strip, first lay post-cast strip welded reinforcement ring, then place vertical cage bar, then will under The reserved cage bar of layer wall and this layer of cage bar colligation, horizontal hoop reserve horizontal annular steel bar with cage bar and wall and carry out colligation；

6）, shear wall post-cast strip formwork, template uses glued board, fixed with through-wall bolt；

7）, determine lower floor's partition wall joint bar position, hoisting prefabricated partition wall component makes lower floor's reserved joint bar enter the prefabricated partition wall of lifting In component；

8）, prefabricated partition wall component and adjacent mounted precast shear wall component connection be connected by screw bolts, by it is prefabricated every At least two pre-buried connecting bolts are connected with pre-buried can in precast shear wall component in wall member：

9）, the connection of prefabricated partition wall component and adjacent cast-in-situ wall even embedded bar anchor, pass through 2 φ pre-buried in partition wall 6 anchor bars are anchored with cast-in-situ wall；

10）, prefabricated partition wall component preheating embedding line connection, prefabricated partition wall component bottom is reserved with pipe joint groove, it is prefabricated every The preheating embedding line of wall member within the walls throws away joint in the groove, the pipeline of prefabricated partition wall component is connected with lower floor pipeline； The reserved pipe joint of prefabricated partition wall component is connected in top superimposed sheet junction with the pipeline laid in Bars In Poured Concrete Slab；

11）, prefabricated partition wall component and floor install, prefabricated partition wall component is reserved with floor groove, and floor corresponding position is also pre- Corresponding recesses are left, the floating groove of cement mortar is used after prefabricated partition wall component installation；

12）, after prefabricated partition wall component installs, surrounding is blocked with mortar；

13）, carry out precast wall body component injected hole grouting and precast shear wall body post-cast strip pour；

14）, concrete curing and the demoulding.

9. a kind of installation method of precast wall body component according to claim 8, it is characterised in that the upper and lower ends of diagonal brace Fixed respectively with precast shear wall component and floor using expansion bolt, diagonal brace top passes through pre-buried in precast shear wall component Bolt collar is laid setscrew and fixed, and diagonal brace bottom is squeezed into floor by expansion bolt and fixed.

10. a kind of installation method of precast wall body component according to claim 8, it is characterised in that lower floor's shear wall Joint bar is ladder muscle, depending on the embedded bar hole of ladder muscle cage bar specification and appearance and size according to precast shear wall component.