CN213868265U

CN213868265U - Balcony structure of civil building

Info

Publication number: CN213868265U
Application number: CN202022456441.6U
Authority: CN
Inventors: 冯慧慧; 刘丹; 林炳红; 徐程浩; 刘小梅
Original assignee: Hangzhou Lvjin Architectural Design Consulting Co ltd
Current assignee: Hangzhou Lvjin Architectural Design Consulting Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-03
Anticipated expiration: 2030-10-29

Abstract

The utility model relates to a balcony structure of a civil building, which comprises a cantilever beam group fixedly connected on a floor slab, a prefabricated bottom plate fixedly connected on the cantilever beam group and a coaming component used for forming a movable space with the prefabricated bottom plate and a wall body, wherein the coaming component is connected on the cantilever beam group; the cantilever beam group comprises a first cantilever beam and a second cantilever beam which are parallel to each other, one ends of the first cantilever beam and the second cantilever beam are fixedly connected with the floor slab, one ends of the first cantilever beam and the second cantilever beam, which are far away from the wall body, are arranged in a cantilever manner, clamping grooves are formed in the top ends of the first cantilever beam and the second cantilever beam, and two opposite sides of the two clamping grooves are respectively flush with two opposite sides of the first cantilever beam and the second cantilever beam; the bottom ends of the two sides of the prefabricated bottom plate are respectively abutted against the bottoms of the two clamping grooves. The application has the effect of reducing the pollution to the environment during construction.

Description

Balcony structure of civil building

Technical Field

The application relates to the field of civil houses, in particular to a balcony structure of a civil building.

Background

The balcony is the indoor extension of building, is the place that the resident breathes fresh air, sunning clothing, puts cultivated in a pot, and its design needs compromise practicality and pleasing to the eye principle. Balcony generally has overhanging type, embedded type, corner formula three types.

Referring to fig. 4, the overhanging type balcony comprises a bottom plate fixedly connected with a floor slab 13 and a surrounding plate assembly 2 fixedly connected with the bottom plate, wherein the bottom plate and the floor slab 13 are integrally cast and formed by reinforced concrete, and one end, far away from the floor slab 13, of the bottom plate is arranged in an overhanging mode. Install bounding wall subassembly 2 after the shaping is pour to the bottom plate, bounding wall subassembly 2 includes that three are the bounding wall of U form concatenation in proper order, and the bounding wall includes fragment of brick and cement mortar tie coat, and the bounding wall is built by laying bricks or stones by the scene and forms, the bottom and the bottom plate fixed connection of bounding wall. Three coamings, bottom plate and the wall body of building form the balcony space that supplies owner's activity.

In view of the above-mentioned related technologies, the inventor believes that although the floor slab formed by integral casting has better strength, dust is easily generated when the floor slab is cast in situ on site, and the environment of the site is polluted.

SUMMERY OF THE UTILITY MODEL

In order to reduce the pollution of balcony construction to the on-the-spot environment, this application provides a civil construction's balcony structure.

The application provides a balcony structure of civil construction adopts following technical scheme:

a balcony structure of a civil building comprises a cantilever beam group fixedly connected to a floor slab, a prefabricated bottom plate fixedly connected to the cantilever beam group and a coaming assembly used for forming a movable space with the prefabricated bottom plate and a wall body, wherein the coaming assembly is connected to the cantilever beam group; the cantilever beam group comprises a first cantilever beam and a second cantilever beam which are parallel to each other, one ends of the first cantilever beam and the second cantilever beam are fixedly connected with the floor slab, one ends of the first cantilever beam and the second cantilever beam, which are far away from the wall body, are arranged in a cantilever manner, clamping grooves are formed in the top ends of the first cantilever beam and the second cantilever beam, and two opposite sides of the two clamping grooves are respectively flush with two opposite sides of the first cantilever beam and the second cantilever beam; the bottom ends of the two sides of the prefabricated bottom plate are respectively abutted against the bottoms of the two clamping grooves.

Through adopting above-mentioned technical scheme, choose a first outrigger and a second outrigger and a building limit of roof beam group and pour the shaping, then shelve the prefabricated bottom plate of shaping on the joint groove on first outrigger and second outrigger. Compare in the shaping is pour to prefabricated bottom plate an organic whole among the prior art, prefabricated fashioned prefabricated bottom plate can effectively reduce the cast-in-place volume of balcony, reduces the production of on-the-spot dust, reduces the pollution of executing to the environment of balcony.

Optionally, the cantilever beam group further comprises a third cantilever beam, the third cantilever beam is fixedly connected between two end portions of the first cantilever beam and the second cantilever beam, which are far away from the floor slab, and a holding groove used for holding one end of the prefabricated bottom plate, which is far away from the floor slab, is formed in the top end of the third cantilever beam, which is close to the floor slab.

Through adopting above-mentioned technical scheme, the third outrigger can improve the connection performance of first outrigger and second outrigger choose the section, improves the whole stability ability of outrigger group to improve the stability ability and the structure security performance of balcony.

Optionally, cushion layers are arranged between the prefabricated bottom plate and the accommodating groove and between the prefabricated bottom plate and the clamping groove.

Through adopting above-mentioned technical scheme, the bed course will fill prefabricated bottom plate and holding tank or with the joint groove between the clearance. In rainy days, the probability of accumulated water and downward leakage on the prefabricated bottom plate can be reduced.

Optionally, the top ends of the first outrigger, the second outrigger and the third outrigger are all higher than the top end of the prefabricated bottom plate; the coaming assembly comprises a first coaming, a second coaming and a third coaming, wherein the first coaming is fixedly connected to the top end of the first cantilever beam, the second coaming is fixedly connected to the top end of the second cantilever beam, and the third coaming is fixedly connected to the top end of the third cantilever beam.

Through adopting above-mentioned technical scheme, the equal prefabrication shaping of first bounding wall, second bounding wall and third bounding wall compares in adopting the brick shaping, can reduce the scene because the dust that the brick produced to the reduction is to environmental pollution. And the bottom ends of the first enclosing plate, the second enclosing plate and the third enclosing plate have height difference with the top end of the prefabricated bottom plate. In rainy days, the probability that accumulated water overflows the connecting position between the coaming assembly and the cantilever beam group on the prefabricated bottom plate is reduced, and the probability that the connecting position between the coaming assembly and the cantilever beam group leaks is reduced.

Optionally, the top ends of the first cantilever beam, the second cantilever beam and the third cantilever beam are fixedly connected with protruding insertion blocks, the insertion block of the first cantilever beam vertically extends into the first enclosing plate, the insertion block of the second cantilever beam vertically extends into the second enclosing plate, and the insertion block of the third cantilever beam vertically extends into the third enclosing plate.

Through adopting above-mentioned technical scheme, the cooperation of pegging graft of the inserted block of first bounding wall and first outrigger, the cooperation of pegging graft of the inserted block of second bounding wall and second outrigger, the cooperation of pegging graft of the inserted block of third bounding wall and third outrigger to the use of on-the-spot mortar when reducing bounding wall subassembly and outrigger group link to reduce because the system of mixing and use the mortar and to the pollution of environment.

Optionally, the top ends of the first outrigger, the second outrigger and the third outrigger are also fixedly connected with a limiting assembly for positioning the coaming assembly.

Through adopting above-mentioned technical scheme, spacing subassembly can improve the installation accuracy of bounding wall subassembly to be convenient for the bounding wall subassembly with choose the installation quality of roof beam group.

Optionally, the limiting assembly comprises a first plate and a second plate fixedly connected to the first plate, the first plate is fixedly connected to the top end of the first cantilever beam, the second cantilever beam or the third cantilever beam, the second plate is located on one side, close to the activity space, of the first plate, one side, close to the activity space, of the second plate is abutted to one side, far away from the activity space, of the first enclosing plate, the second enclosing plate or the third enclosing plate, a bolt piece is further arranged on the second plate in a penetrating mode, and the bolt piece penetrates through the second plate and stretches into the first enclosing plate, the second enclosing plate or the third enclosing plate.

Through adopting above-mentioned technical scheme, second plate and first outrigger, second outrigger or third outrigger are connected to spacing subassembly's first plate, and the second plate is used for fixing a position first bounding wall, second bounding wall or third bounding wall. Simultaneously, the second plate passes through bolt spare and first bounding wall, second bounding wall or third bounding wall fixed connection, can improve the connection performance between bounding wall subassembly and the outrigger group to improve the overall stability ability of balcony.

Optionally, a reinforcing plate is further arranged between the first plate and the second plate, the bottom end of the reinforcing plate is fixedly connected with the first plate, and one side of the reinforcing plate, which is close to the movable space, is fixedly connected with the second plate; the reinforcing plate is provided with a plurality of blocks at intervals along the length direction of the first plate.

Through adopting above-mentioned technical scheme, the reinforcing plate can be when first bounding wall, second bounding wall or third bounding wall installation and striking the second plate, and the reinforcing plate will support the second plate and can transmit the load that the second plate received for first plate to reduce the probability that the second plate warp.

Optionally, a reinforcing assembly is arranged at the connecting position of the first enclosing plate and the third enclosing plate; and a reinforcing component is arranged at the connecting position of the second enclosing plate and the third enclosing plate.

Through adopting above-mentioned technical scheme, the reinforced component can increase the connection performance of third bounding wall and first bounding wall or second bounding wall to improve the wholeness of bounding wall subassembly, improve the stability ability and the security performance of balcony structure.

In summary, the present application includes at least one of the following beneficial technical effects:

the prefabricated bottom plate formed by prefabricating can effectively reduce the cast-in-place volume of a balcony, reduce the generation of on-site dust and reduce the pollution of the balcony to the environment;

the stability and the safety performance of the balcony structure are high;

the limiting assembly is used for positioning the position of the first enclosing plate, the second enclosing plate or the third enclosing plate.

Drawings

Fig. 1 is a schematic plan view of the present application.

Fig. 2 is a schematic sectional view at a-a in fig. 1.

Fig. 3 is a schematic cross-sectional view at B-B in fig. 2.

Fig. 4 is a schematic view of a working condition structure of the related art.

Description of reference numerals: 1. a girder picking group; 101. a first outrigger; 102. a second outrigger; 103. a third cantilever beam; 2. a coaming assembly; 201. a first enclosing plate; 202. a second enclosing plate; 203. a third coaming; 3. prefabricating a bottom plate; 4. accommodating grooves; 5. a clamping groove; 6. inserting a block; 7. a cushion layer; 8. a jack; 9. a first filling layer; 10. a second filling layer; 11. a reinforcement assembly; 1101. a first reinforcing plate; 1102. a second reinforcing plate; 1103. reinforcing the bolt; 12. a limiting component; 1201. a first plate member; 1202. a second plate member; 1203. a bolt member; 1204. a reinforcing plate; 13. a floor slab; 14. and (5) an outer wall.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a balcony structure of civil buildings. Referring to fig. 1 and 2, the balcony structure includes an outrigger group 1 cast integrally with a floor slab 13, a prefabricated bottom plate 3 fixedly connected to the outrigger group 1, and a coaming assembly 2. The enclosing plate assembly 2 comprises a first enclosing plate 201, a first enclosing plate 201 and a third enclosing plate 203, and the prefabricated bottom plate 3, the first enclosing plate 201 and the third enclosing plate 203 are all prefabricated and molded in a factory. The wall body, the prefabricated bottom plate 3, the first enclosing plate 201 and the third enclosing plate 203 enclose a movable space communicated with the interior of the house.

The prefabricated bottom plate 3 and the coaming assembly 2 can reduce the amount of on-site concrete pouring, thereby reducing dust generated during on-site concrete mixing and pouring and reducing pollution of balcony construction to the environment.

Referring to fig. 2 and 3, the outrigger group 1 includes a first outrigger 101, a second outrigger 102, and a third outrigger 103. The first cantilever beam 101 and the second cantilever beam 102 are arranged in parallel at intervals, one end of the first cantilever beam 101 and one end of the second cantilever beam 102 are both connected with the floor slab 13, and the other opposite ends are both arranged in a cantilever manner. The third outrigger 103 is fixedly connected between two opposite sides of the first outrigger 101 and the second outrigger 102, and the third outrigger 103 is arranged far away from the floor 13.

The top of first outrigger 101 and second outrigger 102 is all vertical has seted up joint groove 5, and the both sides in two joint grooves 5 are in opposite directions respectively with the both sides parallel and level in first outrigger 101 and second outrigger 102 are in opposite directions, and joint groove 5 is parallel to the length direction setting of first outrigger 101.

Holding tank 4 has been vertically seted up on the top of third outrigger 103, and one side parallel and level that a lateral wall and third outrigger 103 of holding tank 4 are close to the wall body, and holding tank 4 sets up along the length direction of third outrigger 103, and the both ends of holding tank 4 are respectively in the tip intercommunication that floor 13 was kept away from in two joint grooves 5.

The top ends of the first outrigger 101, the second outrigger 102 and the third outrigger 103 are fixedly connected with the insertion blocks 6, and the insertion blocks 6 are arranged at intervals along the length direction of the first outrigger 101, the second outrigger 102 or the third outrigger 103. The cross section of the insertion block 6 is rectangular, and the top end of the insertion block 6 is an arc-shaped chamfer.

The bottom ends of two sides of the prefabricated bottom plate 3 abut against the groove bottoms of the clamping grooves 5 of the first cantilever beam 101 and the second cantilever beam 102, one end, far away from the floor slab 13, of the prefabricated bottom plate 3 abuts against the groove bottom of the accommodating groove 4, cement mortar is filled between the prefabricated bottom plate 3 and the clamping grooves 5 and between the prefabricated bottom plate 3 and the accommodating groove 4 to form a cushion layer 7, and the connecting performance and the sealing performance between the prefabricated bottom plate 3 and the first cantilever beam 101, between the prefabricated bottom plate and the second cantilever beam 102 and between the prefabricated bottom plate and the accommodating groove 4 are improved. In rainy days, accumulated water appears on the prefabricated bottom plate 3, and the cushion layer 7 can reduce the probability of the accumulated water seeping downwards from the connecting position of the prefabricated bottom plate 3 and the first cantilever beam 101, the second cantilever beam 102 or the third cantilever beam 103.

The bottom of first bounding wall 201, second bounding wall 202 and third bounding wall 203 all seted up the jack 8 of vertical setting, and the shape cooperation inserted block 6's of jack 8 shape. The first apron 201 vertically abuts against the top end of the first outrigger 101 and is arranged in parallel with the length direction of the first outrigger 101, the second apron 202 vertically abuts against the top end of the second outrigger 102 and is arranged in parallel with the length direction of the second outrigger 102, and the third apron 203 vertically abuts against the top end of the third outrigger 103 and is arranged in parallel with the length direction of the third outrigger 103. At this time, the insertion hole 8 of the first enclosing plate 201 is vertically inserted into and matched with the insertion block 6 on the first outrigger 101, the insertion hole 8 of the second enclosing plate 202 is vertically inserted into and matched with the insertion block 6 of the second outrigger 102, and the insertion hole 8 of the third enclosing plate 203 is vertically inserted into and matched with the insertion block 6 of the third outrigger 103.

The ends of the first enclosing plate 201, the second enclosing plate 202 and the prefabricated bottom plate 3 close to the wall are all provided with a first filling layer 9 formed by structural sealant, and the first filling layer 9 is U-shaped so as to improve the connection performance and the sealing performance between the enclosing plate component 2 and the wall.

Two ends of the third enclosing plate 203 in the length direction of the third cantilever beam 103 are abutted between two opposite sides of the first enclosing plate 201 and the second enclosing plate 202, two ends of the third enclosing plate 203 are coated with a second filling layer 10 formed by structural waterproof sealant, and the second filling layer 10 is used for separating a gap between the third enclosing plate 203 and the first enclosing plate 201 or a gap between connecting positions of the second enclosing plates.

The connecting positions of the first enclosing plate 201 and the third enclosing plate 203 and the connecting positions of the second enclosing plate 202 and the third enclosing plate 203 are provided with the reinforcing assemblies 11.

The reinforcing component 11 is arranged along the height direction of the activity space, the reinforcing component 11 comprises a first reinforcing plate 1101 attached to a third enclosing plate 203 and a second reinforcing plate 1102 attached to a second enclosing plate 202 or a first enclosing plate 201, the first reinforcing plate 1101 and the second reinforcing plate 1102 are fixedly connected into an angle code structure, and reinforcing bolts 1103 are arranged on the first reinforcing plate 1101 and the second reinforcing plate 1102 in a penetrating mode. The reinforcing bolt 1103 of first reinforcing plate 1101 passes first reinforcing plate 1101 and stretches into to third bounding wall 203 in, and reinforcing bolt 1103 on the second reinforcing plate 1102 passes second reinforcing plate 1102 and stretches into to first bounding wall 201 or second bounding wall 202 in, strengthens the connectivity of third bounding wall and first bounding wall 201 or second bounding wall 202 through reinforcing component 11, improves the wholeness of bounding wall subassembly 2 to improve the stability ability and the security performance of balcony structure.

The sides of the first enclosing plate 201, the second enclosing plate 202 and the third enclosing plate 203 far away from the activity space are also provided with limiting assemblies 12. The limiting assembly 12 comprises a first plate 1201 fixedly connected to the top end of the first cantilever beam 101, the second cantilever beam 102 or the third cantilever beam 103 and a second plate 1202 fixedly connected to one side of the first plate 1201 close to the insert 6, the first plate 1201 and the second plate 1202 form an angle code structure, and the top end of the second plate 1202 is higher than the top end of the insert 6. One side of the second plate 1202 close to the activity space is attached to and abutted against one side of the first enclosing plate 201, the second enclosing plate 202 or the third enclosing plate 203 far away from the activity space.

Still the level is worn to be equipped with bolt 1203 on the second panel 1202, and bolt 1203 passes second panel 1202 and stretches into first bounding wall 201, second bounding wall 202 or third bounding wall 203 in, through bolt 1203 and spacing subassembly 12, can improve bounding wall subassembly 2 and choose the connection performance of roof beam group 1 to improve the integrity of balcony structure. Waterproof glue is coated on the limiting assemblies 12.

One side of the second plate 1202, which is far away from the activity space, is further fixedly connected with a reinforcing plate 1204, the bottom end of the reinforcing plate 1204 is fixedly connected with the top end of the first plate 1201, the reinforcing plate 1204 is vertically arranged, one side of the reinforcing plate 1204 in the width direction is parallel to the width direction of the first plate 1201, and a plurality of at least three reinforcing plates 1204 are arranged at intervals along the length direction of the first plate 1201.

The implementation principle of the balcony structure of the civil building in the embodiment of the application is as follows: the cantilever beam group 1 is cast in situ. The first enclosing plate 201, the second enclosing plate 202 and the third enclosing plate 203 are all prefabricated in a factory.

The balcony structure is installed by the following steps: and S1, mounting the prefabricated bottom plate 3. Cement mortar is paved at the bottoms of the accommodating groove 4 and the clamping groove 5 to form a cushion layer 7. Then hoisting the prefabricated bottom plate 3, and enabling the prefabricated bottom plate 3 to be located in the accommodating groove 4 and the clamping groove 5. And finally, slurry is supplemented between the side wall of the top end of the prefabricated bottom plate 3 and the accommodating groove 4 or the clamping groove 5.

And S2, mounting the limiting assembly 12, and mounting the limiting assembly 12 on the top ends of the first cantilever beam 101, the second cantilever beam 102 and the third cantilever beam 103 respectively.

And S3, mounting the boarding assembly 2. S3-1, first installing the first enclosing plate 201, and during installation, attaching one side of the first enclosing plate 201 to the side wall of the second plate 1202, so that the limiting assembly 12 on the first cantilever beam 101 limits the movement of the first enclosing plate 201 in the thickness direction. Then, the inserting hole 8 of the first enclosing plate 201 is aligned with the inserting block 6 on the first outrigger 101, then the first enclosing plate 201 is made to fall down, and the inserting hole 8 of the first enclosing plate 201 is in inserting fit with the inserting block 6 on the first outrigger 101 to form primary connection.

S3-2, the second shroud 202 is installed according to the step of S3-1. After the second enclosure 202 is installed, a third enclosure 203 between the first enclosure 201 and the second enclosure 202 is installed.

And S3-3, after the third enclosing plate 203 is installed, sequentially installing bolt pieces 1203, so that the second plate 1202 is connected with the first enclosing plate 201, the second enclosing plate 202 or the third enclosing plate 203.

And S3-4, mounting a group of fixing assemblies at the position where the third enclosing plate 203 forms an included angle with the first enclosing plate 201. Meanwhile, another fixing assembly is installed at the position where the third enclosing plate 203 forms an included angle with the second enclosing plate 202.

And S4, constructing the first filling layer 9 and the second filling layer 10. S4-1, filling structural waterproof sealant between the wall and one end of the prefabricated bottom plate 3, the first enclosing plate 201 and the second enclosing plate 202 close to the wall to form a U-shaped first waterproof layer.

S4-2, filling structural waterproof sealant at the connecting position of the third enclosing plate 203 and the first enclosing plate 201 to form a second filling layer 10. Meanwhile, the connecting position of the third enclosing plate 203 and the second enclosing plate 202 is filled with structural waterproof sealant to form another second filling layer 10.

And finally constructing a waterproof structure and a decorative structure on the prefabricated bottom plate 3.

The balcony structure is rapidly assembled by the method.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A balcony structure of civil construction which characterized in that: the prefabricated wall panel assembly comprises a cantilever beam group (1) fixedly connected to a floor (13), a prefabricated bottom plate (3) fixedly connected to the cantilever beam group (1) and a surrounding plate assembly (2) used for forming a movable space with the prefabricated bottom plate (3) and a wall body, wherein the surrounding plate assembly (2) is connected to the cantilever beam group (1); the cantilever beam group (1) comprises a first cantilever beam (101) and a second cantilever beam (102) which are parallel to each other, one end of each of the first cantilever beam (101) and the second cantilever beam (102) is fixedly connected with a floor slab (13), one ends, far away from a wall body, of the first cantilever beam (101) and the second cantilever beam (102) are arranged in a cantilever mode, clamping grooves (5) are formed in the top ends of the first cantilever beam (101) and the second cantilever beam (102), and two opposite sides of the two clamping grooves (5) are parallel and level to two opposite sides of the first cantilever beam (101) and the second cantilever beam (102) respectively; the bottom ends of the two sides of the prefabricated bottom plate (3) are respectively abutted to the bottoms of the two clamping grooves (5).

2. The balcony structure of a civil building according to claim 1, wherein: the cantilever beam group (1) further comprises a third cantilever beam (103), the third cantilever beam (103) is fixedly connected between two end portions, far away from the floor (13), of the first cantilever beam (101) and the second cantilever beam (102), and a containing groove (4) used for containing one end, far away from the floor (13), of the prefabricated bottom plate (3) is formed in the top end, close to the floor (13), of the third cantilever beam (103).

3. The balcony structure of a civil building according to claim 2, wherein: and cushion layers (7) are arranged between the prefabricated bottom plate (3) and the accommodating groove (4) and between the prefabricated bottom plate (3) and the clamping groove (5).

4. The balcony structure of a civil building according to claim 1, wherein: the top ends of the first cantilever beam (101), the second cantilever beam (102) and the third cantilever beam (103) are all higher than the top end of the prefabricated bottom plate (3); the coaming assembly (2) comprises a first coaming (201) fixedly connected to the top end of the first cantilever beam (101), a second coaming (202) fixedly connected to the top end of the second cantilever beam (102), and a third coaming (203) fixedly connected to the top end of the third cantilever beam (103).

5. The balcony structure of a civil building according to claim 4, wherein: the top ends of the first cantilever beam (101), the second cantilever beam (102) and the third cantilever beam (103) are fixedly connected with protruding insertion blocks (6), the insertion blocks (6) of the first cantilever beam (101) vertically extend into the first enclosing plate (201), the insertion blocks (6) of the second cantilever beam (102) vertically extend into the second enclosing plate (202), and the insertion blocks (6) of the third cantilever beam (103) vertically extend into the third enclosing plate (203).

6. The balcony structure of a civil building according to claim 4, wherein: the top ends of the first cantilever beam (101), the second cantilever beam (102) and the third cantilever beam (103) are fixedly connected with limiting assemblies (12) used for positioning the boarding assemblies (2).

7. The balcony structure of a civil building according to claim 6, wherein: the limiting assembly (12) comprises a first plate (1201) and a second plate (1202) fixedly connected to the first plate (1201), the first plate (1201) is fixedly connected to the top end of the first cantilever beam (101), the second cantilever beam (102) or the top end of the third cantilever beam (103), the second plate (1202) is located on one side, close to the activity space, of the first plate (1201), one side, close to the activity space, of the second plate (1202) abuts against one side, far away from the activity space, of the first enclosing plate (201), the second enclosing plate (202) or the third enclosing plate (203), a bolt piece (1203) is further arranged on the second plate (1202) in a penetrating mode, and the bolt piece (1203) penetrates through the second plate (1202) and extends into the first enclosing plate (201), the second enclosing plate (202) or the third enclosing plate (203).

8. The balcony structure of a civil building according to claim 7, wherein: a reinforcing plate (1204) is further arranged between the first plate (1201) and the second plate (1202), the bottom end of the reinforcing plate (1204) is fixedly connected with the first plate (1201), and one side, close to the movable space, of the reinforcing plate (1204) is fixedly connected with the second plate (1202); the reinforcing plate (1204) is provided with a plurality of blocks at intervals along the length direction of the first plate member (1201).

9. The balcony structure of a civil building according to claim 4, wherein: a reinforcing component (11) is arranged at the connecting position of the first enclosing plate (201) and the third enclosing plate (203); and a reinforcing component (11) is arranged at the connecting position of the second enclosing plate (202) and the third enclosing plate (203).