CN218264949U - Concrete cantilever member support system - Google Patents

Abstract

The utility model discloses a concrete cantilever member supporting system, which comprises a building main body, wherein the building main body is provided with a staircase, the building main body is provided with a plurality of embedded parts, each embedded part is connected with a reinforcing steel bar, a beam penetrating hole is reserved in the staircase, and a composite supporting frame is installed between each embedded part and the beam penetrating hole; a short supporting column is arranged between the composite supporting frame and a rest platform of the staircase; the end, far away from the support short column, of the composite support frame is provided with a three-dimensional support frame, and the three-dimensional support frame is detachably connected with an indoor template support frame; the top end of the three-dimensional support frame is detachably connected with a concrete cantilever member template; the utility model discloses the construction is simple, safe and reliable, is applicable to the concrete component of encorbelmenting.

Description

Concrete cantilever member support system

Technical Field

The utility model belongs to the technical field of the construction, concretely relates to concrete cantilever member braced system.

Background

Along with the development of urban construction, high-rise buildings are increasing day by day, the appearance design of the buildings is gradually novel, the layer surface is taken as an indispensable part in the building structure, the building function and the modeling requirement are higher and higher, more and more overhanging components are adopted on the roof surface of the top layer, the method is characterized in that the overhanging length is large, the height is high, the construction load is large, the construction difficulty is high, and in order to ensure the safety, ensure the quality and be economic and reasonable, the method for perfecting the formwork supporting method of the oversized concrete overhanging components on the top of the high-rise buildings has a very remarkable significance, while the traditional formwork supporting mode adopts a floor type high formwork support body. Although the floor type high formwork support body is relatively safe in concrete pouring, the workload is large, the reinforcement of the formwork support body is complicated, and a large amount of materials and labor force are consumed; meanwhile, if the overhanging component floats outwards too much (1.5-2.5 m), the linear length is long, the setting difficulty and the potential safety hazard are increased, and even the implementation is difficult.

Aiming at the condition, a research group is established by our company, technical attack and innovation are carried out, and a concrete cantilever member supporting system is provided through repeated practice and summary.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above prior art not enough, provide a simple, safe and reliable's of construction concrete component braced system that encorbelments.

In order to achieve the above object, the utility model adopts the following technical scheme:

a concrete cantilever member supporting system comprises a building main body, wherein the building main body is provided with a staircase, the building main body is provided with a plurality of embedded parts, the embedded parts are connected with reinforcing steel bars, beam penetrating holes are reserved in the staircase, and a composite supporting frame is installed by the embedded parts and the beam penetrating holes together;

the composite support frame comprises a first main beam, the first main beam penetrates through the beam penetrating hole and extends to the outer side of the wall of a staircase, the first main beam is detachably connected with a second main beam, one end of the second main beam is detachably connected with the embedded part, the other end of the second main beam penetrates through the staircase and extends out of the building main body, the first main beam is detachably connected with a plurality of primary secondary beams, each primary secondary beam is respectively positioned at two ends of the first main beam and is detachably connected with the first main beam, each primary secondary beam is close to the building main body and is detachably connected with the corresponding embedded part, each primary secondary beam is far away from the building main body and extends out of the building main body, the second main beam is far away from the building main body and is detachably connected with a plurality of secondary beams, each secondary beam is arranged at intervals along the length direction of the second main beam, and two ends of each secondary beam are respectively detachably connected with the corresponding primary secondary beams;

a short supporting column is arranged between the composite supporting frame and a rest platform of the staircase;

the end, far away from the support short column, of the composite support frame is provided with a three-dimensional support frame, and the three-dimensional support frame is detachably connected with an indoor template support frame;

the top end of the three-dimensional support frame is detachably connected with a concrete cantilever member template.

And as limitation, a tension frame is arranged between the composite support frame and the staircase and comprises 2 steel wire ropes and turn-buckle bolts, one of the steel wire ropes is wound on the composite support frame and then is connected with one end of the turn-buckle bolt, the other steel wire rope penetrates through a reserved hole of the staircase and is bent back to be connected with the other end of the turn-buckle bolt, and the turn-buckle bolt is used for tightening or loosening the steel wire rope in a forward rotation or a reverse rotation mode.

As another limitation, a protective layer is arranged between the steel wire rope and the composite support frame; and the steel wire rope is wound on the staircase through the preformed hole.

As another limitation, the number of the first main beams is 2, and the 2 first main beams are arranged at intervals along the length direction of the staircase; the second girder is 2, 2 the second girder follows the width direction interval of stairwell sets up.

As another limitation, the number of the primary secondary beams is 4, and the 4 primary secondary beams are uniformly distributed at two ends of the first main beam; the number of the secondary beams is 4, and each secondary beam is respectively connected with the corresponding second main beam and the corresponding primary secondary beam.

As another limitation, the supporting short column includes a supporting plate, two ends of the supporting plate are respectively and fixedly connected with a reinforcing plate, and reinforcing ribs are respectively and fixedly connected between two sides of the supporting plate and the reinforcing plate.

As another definition, the number of the supporting studs is 2, and each supporting stud is located between the corresponding second main beam and the resting platform.

As another limitation, the three-dimensional support frame is detachably connected with the indoor formwork support through a plurality of cross rods, the three-dimensional support frame comprises a plurality of vertical rods, a plurality of cross rods and a plurality of inclined rods, one end of each vertical rod is connected with the composite support frame, the vertical rods are arranged at intervals along the surface of the composite support frame, the cross rods are respectively connected with the corresponding vertical rods, the cross rods are respectively arranged longitudinally and transversely, the inclined rods are respectively detachably connected with the corresponding vertical rods and the cross rods, and 2 inclined rods are arranged in a scissor shape.

As another limitation, the concrete cantilever member template is detachably connected with a prepressing counterweight, and the prepressing counterweight is matched with the counterweight of the concrete cantilever member template.

As another limitation, a comparison observation point is arranged between the building main body and the composite support frame, the comparison observation point comprises a positioning punctuation of the building main body, an observation point is arranged on the three-dimensional support frame connected with the composite support frame, the observation point is flush with the positioning punctuation, when the observation point is lower than the position of the positioning punctuation, the composite support frame sinks, reinforcement measures need to be taken and monitoring is strengthened, and when the position of the observation point relative to the positioning punctuation is not changed, the composite support frame is qualified in construction.

Compared with the prior art, the utility model, the technological progress who gains lies in:

the building main body of the utility model is provided with a plurality of embedded parts, each embedded part is connected with a reinforcing steel bar, and the reinforcing steel bars can prevent the embedded bars from being pulled out of a poured wall body; a beam penetrating hole is reserved in the staircase, and the embedded positions of the embedded part and the beam penetrating hole are preset according to the marks of the building drawing; all embedded parts and the beam through holes are mounted and rotated together to form a composite support frame; the composite support frame comprises a first main beam, the first main beam penetrates through a beam penetrating hole and extends to the outer side of a wall of a staircase, the first main beam is detachably connected with a second main beam, one end of the second main beam is detachably connected with an embedded part, the other end of the second main beam penetrates through the staircase and extends out of the building main body, the first main beam is detachably connected with a plurality of primary secondary beams, each primary secondary beam is respectively positioned at two ends of the first main beam and is detachably connected with the first main beam, each primary secondary beam is close to the building main body end and is detachably connected with a corresponding embedded part, each primary secondary beam is far away from the building main body end and extends out of the building main body, the second main beam is far away from the building main body end and is detachably connected with a plurality of secondary beams, each secondary beam is arranged at intervals along the length direction of the second main beam, and two ends of each secondary beam are respectively detachably connected with a corresponding primary beam; the arrangement ensures that the composite support frame is arranged in a staircase and a room of a top-layer user of the building main body, and compared with a floor type high-support formwork frame body, the construction is simple; a short supporting column is arranged between the composite supporting frame and a rest platform of the staircase, so that the stability of the composite supporting frame is further improved, and the safety is improved; the end, far away from the support short column, of the composite support frame is provided with the three-dimensional support frame, and the three-dimensional support frame is detachably connected with the indoor template support frame, so that the stability of the three-dimensional support frame is improved, and the safety is further improved; the top end of the three-dimensional support frame is detachably connected with a concrete cantilever member template, and the concrete cantilever member template is used for pouring a cantilever member; to sum up, the utility model discloses the construction is simple, safe and reliable, is applicable to the concrete component of encorbelmenting.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention.

In the drawings:

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of a building main body, a composite support frame, a three-dimensional support frame, a short support column and a concrete cantilever member template according to an embodiment of the utility model;

FIG. 3 is a schematic structural view of the building body, the composite supporting frame, the supporting short column and the tension frame according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of the building main body, the staircase and the composite support frame according to the embodiment of the present invention;

fig. 5 is a schematic structural view of an embedded part and a reinforcing steel bar according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an embedded part, reinforcing steel bars and a second main beam according to an embodiment of the present invention;

fig. 7 is a schematic view of a connection structure of a first main beam and a second main beam according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a steel wire rope and a turn buckle according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a second main beam, a secondary beam, a protective layer and a steel wire rope according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the staircase and the wire rope according to the present invention;

fig. 11 is a schematic structural view of a supporting short column according to an embodiment of the present invention;

fig. 12 is a schematic structural view of the building main body, the composite supporting frame, the vertical rod, the concrete cantilever member template and the comparison observation point according to the embodiment of the present invention;

FIG. 13 is a schematic structural view of a staircase and a beam-passing hole according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a three-dimensional support frame according to an embodiment of the present invention.

Labeling components: 1-building main body, 2-staircase, 201-beam penetrating hole, 202-preformed hole, 3-embedded part, 4-reinforcing steel bar, 5-composite support frame, 501-first main beam, 502-second main beam, 503-primary secondary beam, 504-secondary beam, 6-support short column, 601-support plate, 602-reinforcing plate, 603-reinforcing rib, 7-three-dimensional support frame, 701-vertical rod, 702-cross rod, 703-diagonal rod, 8-concrete cantilever member template, 9-tension frame, 901-steel wire rope, 902-basket bolt, 10-protective layer, 11-contrast point, 1101-positioning mark point and 1102-observation point.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.

Embodiment is a concrete cantilever member braced system

The embodiment discloses a concrete cantilever member supporting system, as shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6 and fig. 7, which comprises a building main body 1, wherein the building main body 1 is provided with a plurality of embedded parts 3 according to design drawings in the building process, in order to prevent the embedded parts 3 from being pulled out of a poured wall body, each embedded part 3 is connected with a reinforcing steel bar 4, 2 reinforcing steel bars 4 such as phi 18 reinforcing steel bars are laid on two sides of the embedded parts 3, the embedded parts 3 are poured together with the reinforcing steel bars 4 when the building main body 1 is provided with a staircase 2, the staircase 2 is reserved with a beam penetrating hole 201 according to the design drawings in the building process, the building main body 1 and the staircase 2 are integrally formed, a plurality of embedded parts 3 and the beam penetrating hole 201 are jointly provided with a composite supporting frame 5, the composite support frame 5 comprises a first main beam 501, such as 20# I-steel, and the like, wherein the first main beam 501 can be one or multiple, such as 2, the 2 first main beams 501 are arranged along the length direction of the staircase 2 at intervals, the 2 first main beams 501 respectively penetrate through the corresponding beam penetrating holes 201 and extend to the outer side of the wall of the staircase 2, the first main beam 501 is detachably connected with a second main beam 502, such as by adopting a double-U-shaped ring connection, the second main beam 502 is 2, the 2 second main beams 502 are arranged along the width direction of the staircase 2 at intervals, one end of the second main beam 502 is detachably connected with the corresponding embedded part 3, and when the second main beam 502 and the embedded part 3 are fastened, wood wedges can be used for opposite-crossing fastening between the second main beam 502 and the embedded part 3; the second main beam 502 can also be directly fastened and connected with the embedded part 3; the other end of the second main beam 502 penetrates through the stairwell 2 and extends out of the building main body 1, the first main beam 501 is detachably connected with a plurality of primary secondary beams 503, the plurality of primary secondary beams 503 are respectively positioned at two ends of the first main beam 501, the number of the primary secondary beams 503 is 4, the 4 primary secondary beams 503 are uniformly distributed at two ends of the first main beam 501, the plurality of primary secondary beams 503 are close to the end of the building main body 1 and are detachably connected with corresponding embedded parts 3, the plurality of primary secondary beams 503 are detachably connected with the corresponding first main beam 501, the plurality of primary secondary beams 503 are far away from the end of the building main body 1 and extend out of the building main body 1, the end of the second main beam 502 far away from the building main body 1 is detachably connected with a plurality of secondary beams 504, the plurality of secondary beams 504 are arranged at intervals along the length direction of the second main beam 502, two ends of the plurality of secondary beams 504 are respectively detachably connected with the corresponding primary secondary beams 503, the secondary beams 504 are 4, the 4 secondary beams 504 are respectively connected with the corresponding second main beam 502 and the primary beam 503, the composite support frame 5 is arranged in the stairwell 2 and a room of a top-level user of the building main body 1, a simple formwork construction is adopted; (ii) a A supporting short column 6 is arranged between the composite supporting frame 5 and the rest platform of the staircase 2, and the stability of the composite supporting frame 5 is improved by the supporting short column 6, so that the safety is improved; the end, far away from the supporting short column 6, of the composite support frame 5 is provided with a three-dimensional support frame 7, the three-dimensional support frame 7 is detachably connected with an indoor formwork support frame, the three-dimensional support frame 7 can be built in a mode of building a scaffold on the existing construction site, and the indoor formwork support frame is built in a building mode of the existing scaffold, so that the composite support frame belongs to common knowledge of technicians in the field and is not described one by one; the top end of the three-dimensional support frame 7 is detachably connected with a concrete cantilever component template 8, and the construction of the concrete cantilever component template 8 belongs to common knowledge and is not described one by one; in order to ensure the safety of a main structure (a support system formed by the composite support frame 5, the support short column 6, the three-dimensional support frame 7 and the concrete cantilever component template 8 together), a steel pipe truss support is additionally arranged at the platform beam of the 3-layer stair below the support short column 6, belongs to the common knowledge of technicians in the field, and is not described in detail, and the 2-layer structure template support below the rest platform of the staircase 2 is not detached; when building, firstly, one end of a second main beam 502 is fixedly connected with an embedded part 3, the other end of the second main beam 502 extends out of a building main body 1 through a staircase 2, then, the first main beam 501 penetrates through a beam penetrating hole 201 and extends to the outer side of the wall of the staircase 2, meanwhile, the first main beam 501 is fixedly connected with the second main beam 502, then, primary secondary beams 503 are respectively positioned at two ends of the first main beam 501, the primary secondary beams 503 are fixedly connected with the first main beam 501, the primary secondary beams 503 are close to the building main body 1 and are fixedly connected with corresponding embedded parts 3, the primary secondary beams are far away from the building main body 1 and extend out of the building main body 1, then, the second main beam 502 is fixedly connected with a plurality of secondary beams 504, the plurality of secondary beams 504 are arranged at intervals along the length direction of the second main beam 502, two ends of the plurality of secondary beams 504 are respectively fixedly connected with corresponding primary secondary beams 503, then two ends of a support column 6 are respectively abutted against the surfaces of a rest platform of the composite support frame 5 and the staircase 2, then, the composite support frame 5 is built, a three-dimensional concrete support frame 7 is connected with a three-dimensional concrete hanging formwork, and a three-dimensional concrete hanging formwork is connected with a three-dimensional support frame 7, and a three-dimensional concrete hanging support frame 8 is connected with a three-dimensional concrete hanging formwork; the advantage of this embodiment is that with the above arrangement, the construction is simple, safe and reliable.

A preferable structure of the composite support frame 5 of this embodiment is that, as shown in fig. 3, fig. 8, fig. 9, fig. 10, and fig. 13, a tension frame 9 is arranged between the composite support frame 5 and the staircase 2, and the tension frame 9 further improves the stability of the composite support frame 5 and improves the safety; the tension frame 9 comprises 2 steel wire ropes 901 and a turn buckle 902, wherein one steel wire rope 901 is wound on the composite support frame 5 and then connected with one end of the turn buckle 902, the connection between the steel wire rope 901 and the turn buckle 902 is connected in the existing connection mode, for example, the two ends of the steel wire rope 901 are fastened and connected to form a ring through U-shaped clamping, and then fastened and connected with the turn buckle 902 through a hook, the steel wire rope 901 and the turn buckle 902 can also be fastened and connected in an iron wire binding mode, and other existing modes can also be used for connection; the steel wire rope 901 is positioned at the end, far away from the building body 1, of the composite support frame 5, preferably, the steel wire rope 901 is wound on the connecting end of the second main beam 502 and the second-level secondary beam 504, a protective layer 10 is arranged between the steel wire rope 901 and the composite support frame 5, the protective layer 10 can be made of rubber pads, rubber sheets and the like, the other steel wire rope 901 penetrates through a reserved hole 202 of a staircase 2 (used after the main structure of the staircase is poured for 14 days) to be bent back to be connected with the other end of the turn-buckle 902, the steel wire rope 901 is wound on the wall of the staircase 2 through the reserved hole 202, the turn-buckle 902 is used for tightening or loosening the steel wire rope 901 in a forward rotation or reverse rotation mode, and finally the turn-buckle 902 is adjusted to enable the steel wire rope 901 to be tightened and bear the load; the advantage of this embodiment lies in from this, adopts above-mentioned setting, has improved the stability of composite support frame 5, has improved the security.

A preferred structure of the supporting short column 6 in this embodiment is, as shown in fig. 2, 3, and 11, the supporting short column 6 includes a supporting plate 601, the supporting plate 601 is an i-steel, two ends of the supporting plate 601 are respectively and fixedly connected with a reinforcing plate 602, the thickness of the reinforcing plate 602 is 1 cm, the cross section is 20 × 20 cm, the supporting plate 601 can be fixedly connected with the reinforcing plate 602 by welding, the supporting plate 601 and the reinforcing plate 602 can also be integrally formed, a reinforcing rib 603 is respectively and fixedly connected between the supporting plate 601 and the reinforcing plate 602 by welding, the reinforcing rib 603 is an inclined strut steel pipe, the reinforcing ribs 603 are respectively located on two sides of the supporting plate 601, the supporting short columns 6 are 2, the 2 supporting short columns 6 are respectively located between the second main beam 502 and the rest platform of the staircase 2 in the corresponding composite supporting frame 5, in order to ensure that the supporting short column 6 can tightly support the rest platform of the second main beam 502 and the staircase 2, the ends of the supporting short column 6 and the second main beam 502 can be filled with wooden wedges for reinforcement, which belong to the prior art in this field; concrete can be filled between the support stub 6 and the rest platform of the staircase 2 to keep the support stub 6 tightly against the second main beam 502 and the rest platform of the staircase 2; the advantage of this embodiment is that with the above arrangement, the stability of the composite support frame 5 is improved.

As shown in fig. 1, 2, and 14, the three-dimensional support frame 7 of this embodiment is detachably connected to an indoor formwork support (not shown in the drawings) through a plurality of cross rods 702 to form a whole, so as to increase stability, two ends of the indoor formwork support respectively prop against the top wall of a house and the ground to form a fixed connection, and the indoor formwork support is built by using the existing scaffold building method, which is the prior art and is not described one by one; the three-dimensional support frame 7 comprises a plurality of vertical rods 701, a plurality of cross rods 702 and a plurality of diagonal rods 703 (the diagonal rods 703 are straight rods which are used obliquely when in use and are named as diagonal rods for distinguishing, the diagonal rods are used alternately to form a scissor support, so that the stability between the vertical rods 701 and the cross rods 702 is increased), one ends of the vertical rods 701 are fixedly connected with the composite support frame 5, the vertical rods 701 are arranged at intervals along the surface of the composite support frame 5, the vertical rods 701 form a plurality of rows and a plurality of columns along the surface of the composite support frame 5, the cross rods 702 are respectively fixedly connected with the corresponding vertical rods 701, the cross rods 702 are respectively arranged longitudinally and transversely, namely the cross rods 702 are respectively fixedly connected with the rows and the columns of the vertical rods 701, the multiple inclined rods 703 are respectively and fixedly connected with the corresponding vertical rods 701 and the corresponding cross rods 702, the multiple inclined rods 703 are arranged in a scissor shape to form a bridging, the multiple vertical rods 701, the multiple cross rods 702 and the multiple inclined rods 703 jointly form a three-dimensional support frame 7, the stability of the three-dimensional support frame 7 is improved, the three-dimensional support frame 7 can be built by referring to the building method of the existing scaffold, the continuous bridging is arranged on the whole area of the outer side of the scaffold, continuous vertical bridging is arranged from bottom to top every 6 meters of the indoor full-space frame longitudinally and transversely, one step is carried out every 5 steps and 4 steps, and the intervals of the wall connecting pieces are 3 steps and are horizontally arranged in embedded steel pipes in the structure for connection; the advantage of this embodiment is that with the above arrangement, the stability of the stereo support frame 7 is increased.

A preferred structure of the concrete cantilever member template 8 of this embodiment is, as shown in fig. 1, fig. 2, and fig. 12, the concrete cantilever member template 8 is detachably connected with a pre-pressing counterweight (not shown in the pre-pressing counterweight drawing), the pre-pressing counterweight may be a steel wire rod, a steel beam, etc., the pre-pressing counterweight is adapted to a counterweight of the concrete cantilever member template 8, the counterweight of the concrete cantilever member template 8 is the weight of the cantilever member after coagulation, the pre-pressing counterweight is designed according to a scheme, a pre-pressing test is performed after the concrete cantilever member is made into a system, namely, the pre-pressing counterweight with the same weight is sequentially placed on the concrete cantilever member template 8 according to the designed bearing load, and the settlement, deformation and stability of a frame body are observed; the prepressing test is qualified, the support system is comprehensively checked and reinforced again, and after the support system is confirmed to be correct, the reinforcement and the concrete pouring are carried out; a comparison observation point 11 is arranged between the building main body 1 and the composite support frame 5, and the comparison observation point 11 is used for conveniently observing a prepressing test; the comparison observation point 11 comprises a positioning point 1101 of a building main body 1, the positioning point 1101 is directly nailed into the building main body 1 by steel nails to serve as the positioning point 1101, an observation point 1102 is arranged on a three-dimensional support frame 7 connected with the composite support frame 5, namely an observation point 1102 is arranged on a support system, the observation point 1102 is generally arranged at the height of a vertical rod 7011.2 meter, the observation point 1102 is flush with the positioning point 1101, then, a prepressing test is carried out, the support system data are monitored in the whole process until the support system is completely disassembled and compared at any time, when the conditions of sinking, loosening, deformation and the like are found, reinforcement measures should be timely taken and monitoring is strengthened, when the position of the observation point 1102 is lower than the position of the positioning point 1101, the composite support frame 5 (support system) needs to be sunk and monitored in a strengthening mode, and when the position of the observation point 1102 relative to the positioning point 1101 is unchanged, the composite support frame 5 (support system) is qualified in a building mode; the advantage of this embodiment lies in that adopt above-mentioned setting, has guaranteed the qualification rate that braced system built, has improved the security.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.

Claims (10)

1. The utility model provides a concrete cantilever member braced system, includes building main part (1), building main part (1) is equipped with stairwell (2), its characterized in that: the building main body (1) is provided with a plurality of embedded parts (3), each embedded part (3) is connected with a reinforcing steel bar (4), a beam penetrating hole (201) is reserved in the staircase (2), and each embedded part (3) and the beam penetrating hole (201) are jointly provided with a composite support frame (5);

the composite support frame (5) comprises a first main beam (501), the first main beam (501) penetrates through the beam penetrating hole (201) and extends to the outer side of the wall of a staircase (2), the first main beam (501) is detachably connected with a second main beam (502), one end of the second main beam (502) is detachably connected with the embedded part (3), the other end of the second main beam (502) penetrates through the staircase (2) and extends out of the building main body (1), the first main beam (501) is detachably connected with a plurality of primary secondary beams (503), each primary secondary beam (503) is respectively located at two ends of the first main beam (501) and is detachably connected with the first main beam (501), the end, close to the building main body (1), of each primary secondary beam (503) is detachably connected with the corresponding embedded part (3), the end, far away from the building main body (1), of each primary secondary beam (503) extends out of the building main body (1), the end, far away from the building main beam (1) of the second main beam (502) is detachably connected with a plurality of secondary beams (504), and the two ends of each secondary beam (504) are arranged along the direction of the second main beam (504), and the secondary beams (503) are respectively connected with the length of the corresponding secondary beams (504);

a support short column (6) is arranged between the composite support frame (5) and a rest platform of the staircase (2);

a three-dimensional support frame (7) is arranged at the end, far away from the support short column (6), of the composite support frame (5), and the three-dimensional support frame (7) is detachably connected with an indoor template support frame;

the top end of the three-dimensional support frame (7) is detachably connected with a concrete cantilever member template (8).

2. A concrete cantilever member support system according to claim 1, wherein: a tension frame (9) is arranged between the composite support frame (5) and the staircase (2), the tension frame (9) comprises 2 steel wire ropes (901) and a turn buckle (902), one steel wire rope (901) is wound on the composite support frame (5) and then is connected with one end of the turn buckle (902), the other steel wire rope (901) penetrates through a reserved hole (202) of the staircase (2) to be bent back to be connected with the other end of the turn buckle (902), and the turn buckle (902) is used for tensioning or loosening the steel wire rope (901) in forward rotation or reverse rotation.

3. A concrete cantilever member support system according to claim 2, wherein: a protective layer (10) is arranged between the steel wire rope (901) and the composite support frame (5); the steel wire rope (901) is wound on the staircase (2) through the preformed hole (202).

4. A concrete cantilever member support system according to claim 1, wherein: the number of the first main beams (501) is 2, and the 2 first main beams (501) are arranged at intervals along the length direction of the staircase (2); the number of the second main beams (502) is 2, and the number of the second main beams (502) is 2 and the second main beams are arranged at intervals along the width direction of the staircase (2).

5. A concrete cantilever member support system according to claim 1, wherein: the number of the primary secondary beams (503) is 4, and the 4 primary secondary beams (503) are uniformly distributed at two ends of the first main beam (501); the number of the secondary beams (504) is 4, and each secondary beam (504) is connected with the corresponding second main beam (502) and the corresponding primary secondary beam (501).

6. A concrete cantilever member support system according to claim 1, wherein: the supporting short column (6) comprises a supporting plate (601), two ends of the supporting plate (601) are respectively fixedly connected with a reinforcing plate (602), and reinforcing ribs (603) are respectively fixedly connected between two sides of the supporting plate (601) and the reinforcing plate (602).

7. A concrete cantilever member support system according to claim 6, wherein: the number of the supporting short columns (6) is 2, and each supporting short column (6) is located between the corresponding second main beam (502) and the rest platform.

8. A concrete cantilever member support system according to claim 1, wherein: three-dimensional support frame (7) can be dismantled through a plurality of horizontal poles (702) and connect indoor formwork support, three-dimensional support frame (7) include a plurality of pole setting (701), a plurality of horizontal pole (702) and a plurality of down tube (703), each compound support frame (5) is connected to the one end of pole setting (701), each pole setting (701) are followed the surface interval of compound support frame (5) sets up, each horizontal pole (702) connect corresponding pole setting (701) respectively, each horizontal pole (702) are vertically and transversely set up respectively, each down tube (703) can be dismantled respectively and connect corresponding pole setting (701) with horizontal pole (702), 2 down tube (703) are the setting of scissors shape.

9. A concrete cantilever member support system according to claim 1, wherein: the concrete cantilever member template (8) is detachably connected with a prepressing counterweight, and the prepressing counterweight is matched with the counterweight of the concrete cantilever member template (8).

10. A concrete cantilever member support system according to claim 9, wherein: the building main body (1) and the composite support frame (5) are provided with a contrast observation point (11) therebetween, the contrast observation point (11) comprises a positioning punctuation (1101) of the building main body (1), an observation point (1102) is arranged on a stereo support frame (7) connected with the composite support frame (5), the observation point (1102) is flush with the positioning punctuation (1101), when the observation point (1102) is lower than the positioning punctuation (1101), the composite support frame (5) sinks and needs to take reinforcement measures and strengthen monitoring, and when the observation point (1102) does not change relative to the positioning punctuation (1101), the composite support frame (5) is qualified in construction.

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