CN215759609U

CN215759609U - Precast concrete modular building unit

Info

Publication number: CN215759609U
Application number: CN202121808612.5U
Authority: CN
Inventors: 周振红; 丁玲臣; 张民富; 顾丽华
Original assignee: Gansu Xinji Engineering Construction Co ltd
Current assignee: Gansu Xinji Engineering Construction Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-02-08
Anticipated expiration: 2031-08-04

Abstract

A precast concrete modularization building unit comprises a box body frame and a box body panel, wherein the box body frame comprises a column body, a cross beam and a longitudinal beam, the box body panel comprises a floor slab and an outer wall which are fixedly arranged on the box body frame, the floor slab is horizontally arranged, and the outer wall is vertically arranged; four columns are vertically arranged, and a steel bar pouring part extends from each column; the cross beams are arranged on the column body in a pairwise opposite manner, and the longitudinal beams are arranged on the column body in a pairwise opposite manner; the building unit forms a space module with a box-shaped structure by splicing the box body frame and the box body panel, the box body frame and the box body panel are assembled in a factory when in use, only the box body frame and the box body panel are used in the transportation and hoisting processes, and the building unit is light in weight and difficult to damage; in the field construction process, the steel bar pouring part at the bottom of the column body is connected with the current foundation of construction or the column body at the lower layer, so that the workload of wet operation is greatly reduced, and the interior can be decorated after the building units are fixed.

Description

Precast concrete modular building unit

Technical Field

The utility model relates to the technical field of modular buildings, in particular to a precast concrete modular building unit.

Background

With the increasing of labor cost, the average age of construction workers is increased, the construction industry becomes the mainstream trend of the current construction industry, the field operation amount is reduced, the assembly type construction becomes the current hot construction type, and the assembly type construction is modular construction. The modular building is characterized in that the building is divided into a plurality of space modules, most of finishing and cleaning work is completed in the production stage of a factory, and then the building is transported to a construction site for splicing and building. The core idea of the prefabricated building is also that the prefabricated building is not a unit component such as a beam unit, a plate unit and a column unit, but a box-shaped space module. The modular structure reflects the high development of industrialization and is an important breakthrough in the building concept and means. The assembling degree can reach more than 85 percent, the self weight is light, and the construction period can be shortened by 60 to 70 percent or even higher.

The prefabricated modular structure takes the construction means of integral stress into consideration, transportation and other condition limitations and other factors, so that the assembly degree of the modular units in a factory is different, the modular units can be generally divided into three types, namely a flush type, an open type and a closed type, and the flush type is assembled by transporting modular bathrooms, floor and roof plates, partition wall plates, outer curtain wall plates, structural components and the like which are processed in the factory to a box body workstation of a construction site and then hoisting; the closed type module unit is an integrated use function space, such as a modularized bathroom, and is characterized in that floor and roof plates, partition wall plates, outer curtain wall plates, structural components and the like are assembled into modules in a factory, and the modules are transported to a site for hoisting after finishing decoration in the factory; the open type module unit structure assembly and the like are assembled into modules in a factory, transported to a construction site for hoisting, and the interior decoration is completed on the site, and the modular unit structure assembly is also a modular unit design characteristic of a prefabricated assembly type modular structure.

The closed module has high cost due to the fact that the built-in module is integrated in the box body, high requirements are placed on transportation, damage is easy to occur in the transportation and hoisting processes, the use is affected, the weight of the box body can be further increased, the closed module is unnecessary for projects with loose requirements on deployment speed, and the decoration selectivity of users is limited due to the integrated built-in system. However, if the flat-plate is adopted, the characteristics of the integral modular building are abandoned, and the components are modularized, so that more wet operation exists on the site, and the labor cost and the construction period are more.

Open type modularization building can satisfy general user's demand, have the characteristic that whole modularization box was assembled simultaneously concurrently, be the better solution that modularization building was applied to general habitability building field, and mostly be pure steel structure module on the market, but pure steel structure is because rigidity is little, the heat preservation heat-proof quality is not good, and anticorrosive durability is relatively poor, therefore comfort level experience is all weaker with building system's harmony, and above all its cost is higher, and what was approved by the masses of users is the concrete building, its use experience surpasss pure steel structure building in all aspects, and the cost is cheap many, but because its quality is heavier, there is certain requirement at prefabricated component or module transportation hoist and mount, prior art exists the improvement part.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a precast concrete modularized building unit, which is characterized in that the assembly of a box body frame and a box body panel is completed after the components of the box body frame and the box body panel are prefabricated and molded, the box body frame and the box body panel are assembled and then lifted to an operation site for wet operation, and the interior decoration operation is performed after the building unit is fixed.

In order to achieve the purpose, the technical scheme of the utility model is as follows: a precast concrete modularized building unit comprises a box body frame and a box body panel, wherein the box body frame comprises a column body, a cross beam and a longitudinal beam, the box body panel comprises a floor slab and an outer wall which are fixedly arranged on the box body frame, the floor slab is horizontally arranged, and the outer wall is vertically arranged; four columns are vertically arranged, and a steel bar pouring part extends from each column; the cross beams are arranged on the column body in a pairwise opposite mode, and the longitudinal beams are arranged on the column body in a pairwise opposite mode.

By adopting the technical scheme, the building unit forms the space module with the box-shaped structure by splicing the box body frame and the box body panel, the box body frame and the box body panel are assembled in a factory when the building unit is used, and then the box body frame and the box body panel are transported to a construction site, the building unit is installed at a specified position in a hoisting mode, and the building unit is light in weight and difficult to damage because only the box body frame and the box body panel are arranged in the transportation and hoisting processes; in the field construction process, the steel bar pouring part at the bottom of the column body is connected with the current foundation of construction or the column body at the lower layer, so that the workload of wet operation is greatly reduced, and the interior can be decorated after the building units are fixed.

The utility model is further configured to: the column, the cross beam, the longitudinal beam, the floor slab and the outer wall are prefabricated components.

Through adopting above-mentioned technical scheme, cylinder, crossbeam, longeron, floor and outer wall are the prefab, make things convenient for factory batch production, and the equipment of prefab goes on in the engineering and dispatches from the factory with the box structure, is under construction, has reduced the work load of job site wet process operation, and the rural removal that the adaptation needs to deploy fast settles.

The utility model is further configured to: the cylinder is a special-shaped cylinder or a rectangular cylinder.

By adopting the technical scheme, when the room has the building requirement of avoiding convex beams and convex columns, the box body column can be set into a special-shaped column; the cross section of the column can be enlarged to form a rectangular column to meet the structural stress requirement.

The utility model is further configured to: the steel bar pouring part is located at the bottom of the column body, and the length of the steel bar pouring part is not less than 800 mm.

Through adopting above-mentioned technical scheme for pouring of on-the-spot node to guarantee the reliability of vertical structure performance.

The utility model is further configured to: the steel bar pouring part is located at two ends of the column body, and the length of the steel bar pouring part is not less than 400 mm.

The utility model is further configured to: the steel bar connecting part is connected in an extrusion sleeve mode.

By adopting the technical scheme and adopting the mechanical connection method of the extrusion sleeve, the node connection form is simple and convenient.

The utility model is further configured to: the top of cylinder is provided with the lug, still be provided with detachable support steelframe in the box frame.

By adopting the technical scheme, the effect of stabilizing the building units is achieved in the transportation and hoisting processes.

The utility model is further configured to: the floor slab comprises a top plate and a filling layer, and the filling layer is poured and molded.

Through adopting above-mentioned technical scheme, the filling layer is filled light concrete to floor elevation, and the benefit of doing so is that can accomplish the beam bottom flat, or the beam bottom only extrudes a small part.

In summary, the present invention has the following effects:

1. the prefabricated concrete modularized building unit is a modularized box body, the building unit is composed of a cylinder body made of concrete, a cross beam and a longitudinal beam made of concrete, an outer wall made of concrete and a floor slab, all the components are prefabricated components, and

the assembly and pouring are finished in a factory, so that the field construction working hours are greatly reduced;

2. modular partitioning is carried out on the house type of the building scheme, the size is standardized, the building plane is divided into a plurality of rectangular blocks in the same way, the sizes of the blocks are different according to the functions of the partitions, the sizes of the blocks in the partitions divided by the same function are the same as much as possible, standardized production is facilitated, and the production efficiency is improved;

3. the upper and lower connecting nodes of the steel bar pouring part adopt a mechanical connecting method of an extrusion sleeve, and the connecting form of the nodes is simple and convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

FIG. 1 is a schematic view of the overall construction of a building unit;

FIG. 2 is a schematic view of the construction of the building unit after installation;

FIG. 3 is a schematic view of the multi-storey building unit after installation;

FIG. 4 is a schematic view of a column structure with a lifting lug;

fig. 5 is a schematic structural diagram of a profiled column body;

FIG. 6 is a schematic view of a column structure with steel bar pouring parts at two ends;

fig. 7 is a schematic structural view of the top plate.

In the figure: 1. a box frame; 11. a cross beam; 12. a stringer; 13. a cylinder; 2. a box body panel; 21. a floor slab; 211. a top plate; 212. a filling layer; 22. an outer wall; 3. a steel bar pouring part; 4. a foundation beam; 5. and (7) lifting lugs.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, a precast concrete modularized building unit includes a box frame 1 and a box panel 2, the box frame 1 includes a column 13, a beam 11 and a longitudinal beam 12, the box panel 2 includes a floor 21 and an outer wall 22 fixedly disposed on the box frame 1, the column 13, the beam 11, the longitudinal beam 12, the floor 21 and the outer wall 22 are prefabricated components, and a finished product customized template such as a steel mold is adopted to perform in-factory casting in the production process to improve the turnover rate of the template and the precision of the product;

the box body frame 1 comprises vertically arranged cylinders 13, the four cylinders 13 are vertically arranged, and as shown in a combined view of fig. 4, the cylinders 13 are extended with a steel bar pouring part 3, exposed steel bars are arranged in the steel bar pouring part 3, in the field construction process, the steel bars are connected with the steel bars at the site foundation in an extrusion sleeve mode, and after the connection is completed, the steel bars are fixed after pouring, so that the cylinders 13 are ensured to be stably connected with the site foundation; the cross beams 11 are arranged on the column body 13 in a pairwise opposite mode, the longitudinal beams 12 are arranged on the column body 13 in a pairwise opposite mode, in the assembling process of the box body frame 1 and the box body panel 2, the floor slab 21 is horizontally arranged, and the outer wall 22 is vertically arranged.

In order to improve the interior appearance of the building unit and reduce the protrusion phenomenon of the column 13 inside the building unit by combining fig. 4, 5 and 6, the column 13 may be configured as a special-shaped column, and in order to improve the structural stress strength of the column 13, the column 13 may also be configured as a rectangular column.

In order to ensure the stability of the connection of the steel bar connecting part and the foundation beam 4, the steel bar pouring part 3 is positioned at the bottom of the column body 13, and the length of the steel bar pouring part 3 is not less than 800 mm.

In order to ensure the stability of the connection of the column body 13 with the lower layer foundation beam 4 and the upper layer foundation beam 4, the steel bar pouring parts 3 are positioned at two ends of the column body 13, and the length of the steel bar pouring parts 3 is not less than 400 mm.

As shown in fig. 4, in order to facilitate the installation of the building unit on site, the top end of the column 13 is provided with a lifting lug 5, and a detachable supporting steel frame is further arranged in the box body frame 1.

As shown in fig. 7, in order to ensure the height of the building unit, the floor slab 21 includes a top slab 211 and a filling layer 212, and the filling layer 212 is cast.

The concrete construction process on site is as follows:

hoisting for one layer: carry out the location of cylinder 13 according to the reinforcing bar on the foundation beam 4, install cylinder 13 in the assigned position, the building unit passes through outer wall 22 and supports on foundation beam 4, carries out the connection of reinforcing bar on reinforcing bar connecting portion and the foundation beam 4, and the node is pour to the back formwork, carries out the hoist and mount of two layers of box again.

Hoisting the upper layer: and hoisting the two-storey building units to the top of one storey, placing the outer wall 22 on the lower wall body, the cross beam 11 and the longitudinal beam 12, transmitting the self-weight load of the upper outer wall 22 to the foundation beam 4 from the outer wall 22 in the construction stage, only temporarily placing the foundation beam, then repeating the processing operation of the steel bar connecting part, and pouring the upper end and the lower end of the column body 13.

It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.

Claims

1. The precast concrete modularized building unit is characterized by comprising a box body frame (1) and a box body panel (2), wherein the box body frame (1) comprises a column body (13), a cross beam (11) and a longitudinal beam (12), the box body panel (2) comprises a floor slab (21) and an outer wall (22) which are fixedly arranged on the box body frame (1), the floor slab (21) is horizontally arranged, and the outer wall (22) is vertically arranged; four columns (13) are vertically arranged, and a steel bar pouring part (3) extends from each column (13); the cross beams (11) are arranged on the column body (13) in a pairwise opposite mode, and the longitudinal beams (12) are arranged on the column body (13) in a pairwise opposite mode.

2. A precast concrete modular building unit according to claim 1, characterized in that the columns (13), cross beams (11), longitudinal beams (12), floor slabs (21) and outer walls (22) are prefabricated members.

3. A precast concrete modular building unit according to claim 1, characterized in that the column body (13) is a profiled or rectangular column.

4. A precast concrete modular building unit according to claim 3, characterized in that the steel reinforcement casting (3) is located at the bottom of the column (13), the length of the steel reinforcement casting (3) being not less than 800 mm.

5. A precast concrete modular building unit according to claim 3, characterized in that the steel reinforcement casting (3) is located at both ends of the column body (13), the length of the steel reinforcement casting (3) being not less than 400 mm.

6. A precast concrete modular building unit according to claim 1, wherein the reinforcing bar connecting portions are connected by means of an extrusion sleeve.

7. A precast concrete modular building unit according to claim 1, characterized in that the top end of the column (13) is provided with a lifting lug (5), and a detachable supporting steel frame is further provided in the box body frame (1).

8. A precast concrete modular building unit according to claim 1, characterized in that the floor slab (21) comprises a top slab (211) and a filling layer (212), and the filling layer (212) is cast.