CN215520345U

CN215520345U - Precast concrete enclosure

Info

Publication number: CN215520345U
Application number: CN202120607128.XU
Authority: CN
Inventors: 张明亮; 梁恒; 李勇; 刘维; 周意; 黎伟
Original assignee: Hunan No2 Engineering Co ltd
Current assignee: Hunan No2 Engineering Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-01-14
Anticipated expiration: 2031-03-25

Abstract

The utility model discloses a precast concrete enclosure, which is characterized by comprising a precast cup foundation, precast enclosure wall columns, precast bottom beams and precast enclosure wall plates, wherein the precast cup foundation is a hollow structure; the cup-mouth foundation is provided with a foundation groove which is open upwards, the lower end of the enclosing wall column is fixed in the foundation groove of the cup-mouth foundation, and two side surfaces of the enclosing wall column are provided with positioning grooves which extend vertically; two ends of the bottom beam are respectively inserted into the positioning grooves of two adjacent enclosure wall columns, and the end part of the bottom beam is placed on the corresponding cup opening foundation; two ends of the wall board are respectively inserted into the positioning grooves of the two adjacent wall columns, and the wall board is placed on the bottom beam. The precast concrete enclosure wall has the advantages of reasonable structure and convenient construction, is favorable for accelerating the construction progress, ensuring the engineering quality, reducing the construction cost and the construction difficulty, and reducing the field wet operation and environmental protection.

Description

Precast concrete enclosure

Technical Field

The utility model relates to a precast concrete enclosure wall, and belongs to the technical field of building construction.

Background

At present, the traditional brick enclosing wall construction technology has multiple working procedures and long working procedure interval time, so that the construction efficiency is low, and the construction period is long. The masonry quality of the enclosing wall depends on the masonry level of workers, is not easy to guarantee, and is easily influenced by rainwater and weather greatly. The labor input is large in the masonry construction process, and the construction cost is not favorably controlled in view of the fact that the current labor price is high. Meanwhile, the brick enclosing wall construction as on-site wet operation does not meet the requirement of green construction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a precast concrete fence which has reasonable structure, convenient construction and cost reduction and efficiency improvement to replace the traditional brick fence aiming at the defects in the prior art. The specific technical scheme is as follows.

A precast concrete enclosure is characterized by comprising a precast cup foundation, precast enclosure wall columns, precast bottom beams and precast enclosure wall plates; the cup-mouth foundation is provided with a foundation groove which is open upwards, the lower end of the enclosing wall column is fixed in the foundation groove of the cup-mouth foundation, and two side surfaces of the enclosing wall column are provided with positioning grooves which extend vertically; two ends of the bottom beam are respectively inserted into the positioning grooves of two adjacent enclosure wall columns, and the end part of the bottom beam is placed on the corresponding cup opening foundation; two ends of the wall board are respectively inserted into the positioning grooves of the two adjacent wall columns, and the wall board is placed on the bottom beam.

Adopt above-mentioned technical scheme, whole precast concrete enclosure is disassembled into prefabricated rim of a cup basis, enclosure post, floorbar and enclosure board, and each precast concrete part has accomplished production in the mill, assembles through the mode similar to building blocks at the job site, greatly improves the efficiency of construction of enclosure, has reduced intensity of labour.

Further, the basic recess of rim of a cup basis is big end up structure, the bottom inner wall of basic recess with the clearance is 25 ~ 50mm between the enclosure post, the top inner wall of basic recess with the clearance is 50 ~ 100mm between the enclosure post. Adopt this kind of foundation groove, be favorable to the rapid Assembly of enclosure post, insert the enclosure post back in the foundation groove, utilize the pea gravel concreten to carry out fixed connection with enclosure post and rim of a cup basis. The groove structure of the foundation is also beneficial to the dismantling of the fence post, and is convenient for recycling the cup foundation and the fence post.

Furthermore, the depth of the surrounding wall column positioning groove is 50-80 mm, and the width of the surrounding wall column positioning groove is 20-30 mm larger than the thickness of the surrounding wall plate.

Furthermore, the two ends of the bottom beam are provided with plug connectors, the length of each plug connector in the extending direction of the bottom beam is 30-50 mm, the thickness of each plug connector is the same as that of the wall board, and the thickness of the bottom beam is not less than twice of that of the wall board. The floorbar is the precast reinforced concrete roof beam, and it has better bearing capacity, and the surrounding wall board bears on the floorbar, even the surrounding wall board makes thinly, the floorbar also can prevent that the surrounding wall board warp, fracture to reduce the cost of whole enclosure.

Furthermore, the wall panel is integral prefabricated panel, and the thickness of the panel is 60-80 mm.

The advantages of the present invention are mainly in the following aspects.

In the aspect of cost: the process is simple, the three processes of building, painting and maintaining of the traditional brick-built enclosing wall are simplified into one process of component assembly, the labor amount is greatly reduced by adopting a construction mode of manually matching machines, and the labor cost is greatly reduced. The standardized and batched production mode of the components greatly reduces the unit cost of the components, and the on-site installation speed is high, so that the project management cost, the mechanical leasing cost and the capital cost can be effectively reduced.

In the quality aspect: the utility model adopts standardized design, mechanized production and factory prefabricated production of components, has uniform manufacturing standard, precise process equipment, stable personnel team and higher quality of workers, and the component production process is less influenced by weather, thereby being easy to ensure the quality.

The progress aspect is as follows: the utility model is centralized in factory production, and is installed on site by manual cooperation with machinery, so that the process is simplified, the construction speed is greatly improved, the interference of environmental factors such as weather on site installation operation is small, and the construction period can be shortened by 75 percent compared with the construction of the traditional brick enclosing wall.

Energy conservation, environmental protection and social benefit: the utility model is produced in a centralized way in factories without on-site molding, greatly reduces the work amount of on-site wet operation, greatly reduces the generation of construction waste, replaces the traditional brick enclosing wall with the prefabricated enclosing wall, reduces the clay exploitation, strengthens the protection of cultivated land to a certain extent and is beneficial to environmental protection; the traditional brick enclosing wall technology is gradually transited to an assembly type construction technology based on the modern technology, and the application and the development of building industrialization in engineering construction are facilitated.

Drawings

FIG. 1 is a schematic structural view of the integral assembly of the precast concrete enclosure of the present invention;

FIG. 2 is a schematic structural view of a cup base;

FIG. 3 is a schematic structural view of a fence post;

FIG. 4 is a schematic structural view of the bottom beam;

figure 5 is a schematic view of the structure of the wall panel.

In the figure: 1-a cup foundation, 101-a foundation groove, 2-a fence post, 201-a positioning groove, 3-a bottom beam, 301-a plug and 4-a fence plate.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

As shown in fig. 1-5, a precast concrete enclosure comprises a precast cup foundation 1, precast enclosure wall columns 2, precast bottom beams 3 and precast enclosure wall plates 4; the cup rim foundation 1 is provided with a foundation groove 101 which is open upwards, the lower end of the enclosure wall column 2 is fixed in the foundation groove 101 of the cup rim foundation 1, and two sides of the enclosure wall column 2 are provided with positioning grooves 201 which extend vertically; two ends of the bottom beam 3 are respectively inserted into the positioning grooves 201 of two adjacent enclosure wall columns 2, and the end part of the bottom beam 3 is placed on the corresponding cup foundation 1; the two ends of the wall board 4 are also respectively inserted into the positioning grooves 201 of the two adjacent wall columns 2, and the wall board 4 is placed on the bottom beam 3.

It should be noted that: when the fence post 2 is located at a corner, the positioning groove 201 should be adjusted according to the trend of the fence line, and the opening direction of the positioning groove 201 is the laying direction of the fence plate 4.

As shown in fig. 4, the two ends of the bottom beam 3 are provided with the plug-in connectors 301, the plug-in connectors 301 are inserted into the corresponding positioning grooves 201 in the construction process, and the end of the bottom beam 3 is placed on the cup foundation 1, so that the bottom beam 3 is not easy to deviate in the construction process.

As shown in FIG. 5, the wall panel 4 is an integral prefabricated wall panel, and the wall panel 4 is placed on the bottom beam through the positioning grooves 201 on the two sides of the wall column 2 in the construction process, so that the rapid assembly of the wall panel can be realized. The thickness of prefabricated wall panel 4 is 60 ~ 80 mm.

The construction method of the precast concrete wall comprises the following steps:

prefabricating a component: prefabricated components such as cup rim foundations, enclosure wall columns, bottom beams and enclosure wall boards are produced in batches in factories and are numbered according to specifications and installation positions.

And (3) checking and accepting the components in the field: the construction unit needs to make the component delivery qualification certificate, the quality detection report and the component appearance size check, strictly forbids the component which does not meet the requirements for acceptance, classifies and stacks the components which are qualified in acceptance according to the specification, and the stacking height is not more than 1.5 m.

And (3) measurement and paying-off: and excavating the earthwork of the foundation pit to a designed elevation, after the concrete cushion is poured and reaches the designed strength, measuring a positioning dimension line of the cup-mouth foundation according to the design requirement of a construction drawing, and controlling the dimension deviation within +/-10 mm.

Installing a cup mouth foundation: the cup foundation is hoisted and placed by adopting an 8t truck crane, a lifting appliance and a lifting point are required to be checked before hoisting, the lifting appliance is placed after the safety and firmness of the cup foundation are confirmed, the horizontal included angle of the lifting cable is preferably larger than 60 degrees, and the cup foundation is symmetrically hoisted in a balanced manner. The cup foundation 1 is hung in a foundation pit and is assisted by manual assistance to be in place, the bottom edge of the cup foundation 1 is aligned with the bounced foundation side line ink line on the cushion layer, the crane is commanded to slowly lower, and the center line and the side line of the cup foundation 1 are accurate in position. When the plane position is partially deviated, the superposition of the basic center lines is ensured, and the correction is carried out by manually adopting a crowbar.

Foundation backfilling: and after the enclosing wall cup foundation 1 is hoisted and concealed and accepted, foundation backfill construction is carried out in time. The foundation backfilling is carried out symmetrically in layers, the thickness of each layer is not more than 300mm, the compaction degree is not less than 90%, and the positioned cup mouth foundation 1 cannot be disturbed in the backfilling construction process.

And (3) mounting the fence post: after the enclosure foundation is backfilled, cleaning up the miscellaneous soil in the cup opening (foundation groove) of the foundation, measuring the center line of the enclosure column according to a design drawing, marking the upper opening of the cup opening, and popping up the side line of the column according to the center line mark. And meanwhile, rechecking the elevation of the bottom of the cup mouth, manually clearing and chiseling when the elevation is higher than the design elevation, and paving M7.5 cement mortar before hoisting when the elevation is lower than the design elevation. After the enclosure wall column is placed in place, temporary triangular supports are arranged in time to ensure that the column is stable. Then correcting the plane position and the verticality of the column, and manually correcting the plane position by using a crowbar and plugging the crowbar by using a wood wedge in time when the plane position deviates; the column perpendicularity is corrected by adopting a 2m guiding rule and a hanging hammer, and the temporary triangular support screw rod is adjusted according to the deviation condition, so that the plane position and the perpendicularity of the column can be ensured to reach the design and standard standards.

Pouring the fine aggregate concrete: and after the correction of the surrounding wall columns is qualified through inspection and acceptance, performing cup opening fine aggregate concrete crack pouring. The crack pouring adopts micro-expansion fine stone concrete, and the concrete strength grade is higher than that of the concrete of the column of the enclosing wall structure by one grade. Before crack pouring, sundries and garbage in the crack are cleaned up, water is sprayed for moistening, one cement paste with the same mixing ratio is coated, concrete is poured for two times, the concrete is poured for the first time to 1/2 cup opening depth positions, the wooden wedges are removed after vibration compaction, and then the concrete is poured for the second time to the top of the cup opening and is vibrated for compaction.

Bottom beam installation: the enclosure gird is hoisted by adopting an 8t truck crane, the gird is hoisted between the enclosure columns and is slowly and stably placed in place, and manual assistance is assisted in aligning and marking the positions of the boundary line of the gird and the top elevation in place during hoisting and placing. After the tie beam is in place, the plane position is corrected, and then the flatness of the correction tie beam is checked by using a leveling guiding rule.

And (3) installing the wall board: after the assembly type enclosure column and the tie beam are installed, a truck crane is adopted to hoist the protective fence plate above the positioning groove of the column to align and stop stably, a crane is commanded to be in place manually to stably and slowly fall to the designed elevation of the bottom, and then cement mortar is adopted to repair and level the gap of the positioning groove, so that the work is completed.

The embodiments of the present invention are described above with reference to the drawings, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A precast concrete wall is characterized by comprising a precast cup foundation (1), precast wall columns (2), precast bottom beams (3) and precast wall panels (4); the cup-mouth foundation (1) is provided with a foundation groove which is open upwards, the lower end of the enclosure wall column (2) is fixed in the foundation groove (101) of the cup-mouth foundation (1), and two side surfaces of the enclosure wall column (2) are provided with positioning grooves (201) which extend vertically; two ends of the bottom beam (3) are respectively inserted into the positioning grooves (201) of two adjacent enclosure wall columns (2), and the end part of the bottom beam (3) is placed on the corresponding cup opening foundation (1); two ends of the wall board (4) are respectively inserted into the positioning grooves (201) of the two adjacent wall columns (2), and the wall board (4) is placed on the bottom beam (3).

2. A precast concrete wall according to claim 1, characterized in that the base groove (101) of the cup foundation (1) is of a big-end-up structure, the gap between the bottom inner wall of the base groove (101) and the enclosure column (2) is 25-50 mm, and the gap between the top inner wall of the base groove (101) and the enclosure column (2) is 50-100 mm.

3. A precast concrete wall according to claim 1, characterized in that the depth of the fence post (2) positioning groove (201) is 50-80 mm and the width is 20-30 mm larger than the thickness of the fence panel (4).

4. A precast concrete wall according to claim 1, characterized in that the two ends of the bottom beam (3) are provided with plugs (301), the length of the plugs (301) in the extending direction of the bottom beam (3) is 30-50 mm, the thickness of the plugs (301) is the same as the thickness of the wall panel (4), and the thickness of the bottom beam (3) is not less than twice the thickness of the wall panel (4).

5. A precast concrete wall according to claim 1, characterized in that the wall panel (4) is a monolithic precast wall panel with a thickness of 60-80 mm.