CN111593874A - Supporting system for overweight overhung suspended member of super high-rise residential conversion layer and construction method - Google Patents

Abstract

The invention discloses an overweight overhung suspended member supporting system of a transfer floor of a super high-rise residence and a construction method thereof. The component load is uniformly transmitted to the overhanging steel platform through the intensive steel pipe fastener type supporting frame, and the steel platform can flexibly design the size according to the actual load, span and overhanging length on site so as to meet the requirement; the invention has the advantages of less used materials, turnover use, no requirement on the bearing capacity of the lower horizontal structure and reduced influence on the construction of surrounding skirt buildings and underground structural areas. The construction process is safe and reliable, green and environment-friendly, has high popularization rate, and is very suitable for the construction task similar to an overweight overhanging suspended component.

Description

Supporting system and construction method of over-heavy overhanging overhanging members in the transfer floor of super high-rise residential buildings

technical field

The invention relates to a support system and a construction method for a super-heavy overhanging suspended component of a super-high-rise residential transfer layer, and belongs to the technical field of building construction.

Background technique

With the rapid development of the national economy and the advancement of design-construction technology, urban construction in my country is also advancing by leaps and bounds. Various super-high-rise and large-scale complex projects continue to innovate structural types and refresh building heights. Among them, in the frame-supported shear wall super high-rise residential complex, the lower part adopts the frame structure type, and the upper part needs to be converted into a shear wall structure at a high position; and the structural self-weight corresponding to the super high building height and the requirements of the lower building layout are often easy to cause the need for conversion floors. In the case of oversized and overweight complex structures and overhanging overhangs, conventional floor-to-ceiling formwork (the structure covers a large area, has a complex structure, and is very high) can no longer meet the progress, safety and economical requirements of similar project construction tasks. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a super-heavy overhanging overhanging member support system and a construction method for a super-high-rise residential transfer floor, the construction process is simple, safe and reliable, and the turnover rate is high, which is safe in the cramped space of a super-high-rise residential complex project. It can efficiently ensure the construction task of the transfer floor structure, and can not affect the construction of the podium and large basement. At the same time, it saves a lot of manpower and material investment, avoids the waste caused by the need for large-scale permanent reinforcement of the support structure caused by accidental temporary load loading during the construction phase, and solves the construction problem of overweight overhanging suspended components, so as to overcome the shortcomings of the existing technology.

To achieve the above object, the present invention provides the following technical solutions:

A construction method for a super-heavy overhanging overhanging suspended member support system of a super-high-rise residential transfer layer. Bearing its construction load, the over-heavy overhanging suspended members of the super high-rise residential transfer floor have no bearing capacity requirements for the structure below them. While solving the problem that the suspended members have no reliable structural support below the construction stage, it greatly reduces the construction impact on the surrounding podium and buildings. The impact of the construction of the underground structure below it.

Preferably, the balanced load-bearing system includes a dense steel tube fastener type support frame;

The cantilevered steel platform includes a steel box girder corbel, a Bailey frame and an I-beam distribution beam, the Bailey frame is supported on the steel box beam corbel and fixed to each other, and the I-beam distribution beam is laid on the shell. The lightning racks are fixed to each other, and the inner end of the corbel of the steel box beam is fixed to the reinforced load-bearing steel pipe column;

The balanced load-bearing system is laid on the cantilevered steel platform and its horizontal displacement is limited by rivets. The construction load of the overweight outrigger cantilevered member is evenly transmitted to the I-beam distribution beam through the dense steel tube fastener type scaffold, and then to the shell. The lightning rack is then transferred to the steel box girder corbel, and finally to the reinforced load-bearing steel pipe column.

Preferably, it includes the following steps:

Step 1. Determine the specific position of the corbel of the steel box girder according to the engineering design drawing and the actual site;

Step 2: Weld the reinforced steel ring plate on the inner wall of the reinforced load-bearing steel pipe column corresponding to the position of the steel box girder corbel in advance, and the reinforced steel ring plate corresponds to the upper and lower flanges of the steel box girder corbel; A curved triangular support plate with positioning function is set on the outer wall of the steel pipe column corresponding to the corbel of the steel box girder, and then the reinforced load-bearing steel pipe column is hoisted to the engineering design position (located on the inner support layer structure of the next layer of the overhanging suspended member) , pouring concrete into the steel pipe column;

The reinforced load-bearing steel pipe column generally adopts the original steel pipe column structure of the structural design itself to strengthen the lateral rigidity. Two layers of built-in steel ring plates are added to the upper and lower flanges of the box girder at the corbel position of the docking steel box girder to strengthen the alignment. The lateral rigidity of the steel pipe column, and the construction of the top and bottom plates of the corresponding steel pipe column structure has been completed (see the construction of the steel pipe column and its bottom plate and top plate in the prior art, the internal support layer structure in this application is the unified name of the bottom plate and the top plate, That is, every two internal support layer structures have steel pipe columns, and the upper and lower internal support layer structures of the steel pipe columns are called the bottom plate and the top plate of the corresponding steel pipe column respectively), which provides reliable lateral force transmission.

Step 3: Hoist the corbels of the steel box girder and fully penetrate and weld it with the reinforced load-bearing steel pipe column, then hoist and weld the corbels of the steel box girder to the reinforced load-bearing steel pipe column, and then fill up the remaining arc-shaped triangular support plates, using The same welding method makes it have the function of strengthening connection. The flange width of the steel box girder corbel needs to be ≥600mm, so that the beret can be simply supported in sections on the upper flange of the steel box girder corbel, reducing the length and At the same time, the cantilevered end of the corbel of the steel box girder grows out of the projection range of the upper overweight overhanging cantilever member, so that the Bailey frame can directly transfer the load downward.

Step 4. Hoist the beret and fix it on the corbel of the steel box girder through the stereotyped clamp; the beret is an ordinary 321 type highway bridge beret, and the span and the number of beams are determined according to the actual needs, and the beret is based on the project. The hoisting capacity of the hoisting equipment is selected to be supported on the aforementioned steel box girder corbels by simply supported beams or continuous beams, and fixed by welding with stereotyped clamps.

Step 5. Lay the I-beam distribution beam, which is simply supported between the internal support layer structure and the Bailey frame platform, and is respectively connected with the round steel U-shaped card and the round steel pre-embedded card. The Bailey frame and the internal support layer structure are fixed; if there is no reliable internal support layer structure (the unreliable internal support layer structure refers to the internal support layer structure plane after pouring or the top or bottom plate of the corresponding steel pipe column and the designed Bailey frame 4 is not on the same level), it can be directly supported on the Bailey frame platform and widen the length of the Bailey frame platform;

According to the actual situation of the project, one end of the I-beam distribution beam can be supported on the internal support layer structure and the other end is supported on the Bailey frame platform, or all of the I-beam distribution beams can be supported on the Bailey frame platform (the width of the platform is ≥1.5m, and the upper components are aligned), priority One end is supported on the internal support layer structure and the other end is supported on the Bailey frame platform. It is fixed with the internal support layer structure by a stereotyped pre-embedded card, and the Bailey frame is fixed with a stereotyped U-shaped card to prevent rollover and ensure its reliable fixation , and the overhanging end of the I-beam distribution beam is 1m beyond the overweight overhanging suspended member supported to provide the working surface for erecting the outer frame.

Step 6. Fix the upper intensive supporting scaffold and the outer scaffolding poles on the I-beam distribution beam, and set up the outer scaffolding at the same time;

Reinforcing rivets are arranged on the upper flange of the I-beam distribution beam, and the upper dense steel pipe fastener-type support frame and the outer scaffolding pole are inserted into steel rivets to facilitate the support of the upper frame body of the platform, and at the same time limit its horizontal displacement, prevent the steel pipe from sliding, and ensure the frame body Stable; the main material of the dense steel pipe fastener type support frame is ordinary steel pipe fastener type scaffolding, and the vertical and horizontal spacing of the vertical and horizontal poles is ≯ 450mm to ensure that the upper overweight load is evenly transmitted to the lower platform and avoid local stress concentration. At the same time, the vertical and horizontal spacing should be is the modulus, so as to adjust the position of the vertical rod under the beam.

Step 7: Set up intensive support scaffolding, lay the formwork required for the overhanging suspended member, bind the steel bars, and pour the overweight outer overhanging suspended member.

Step 8: Remove the formwork required for the overhanging suspended member, remove the intensive support scaffolding, remove the external scaffolding, remove the distribution beam, slide the Bailey frame to the removal platform, remove the Bailey frame, and remove the steel box beam corbel.

According to the above construction method, a super-heavy overhanging overhanging suspended member support system for a super-high-rise residential transfer floor is required, including a reinforced load-bearing steel pipe column located under the externally overhanging suspended member and an internal support layer structure under the projection of the internal structure of the externally overhanging suspended member of the conversion layer. , which is characterized in that: a cantilever steel platform is fixed on one side of the reinforced load-bearing steel pipe column, and a balanced load-bearing system composed of a dense steel pipe fastener-type support frame is laid on the cantilever steel platform to limit its horizontal displacement. Outer scaffolding is set up on the cantilevered steel platform outside the system and fixed to each other. The dense steel tube fastener type support frame and the outer scaffolding are parallel to each other. The balanced load-bearing system is located directly below the overhanging suspended member, and the balanced load-bearing system is used to support the construction stage. The overhanging suspended member.

Preferably, a reinforced steel ring plate is fixed on the inner wall of the reinforced load-bearing steel pipe column at the connection with the cantilevered steel platform, and the reinforced load-bearing steel pipe column is filled with concrete; the slurry holes are evenly distributed around the reinforced steel ring plate, and The middle of the reinforced steel ring plate is hollow to form a grouting hole.

Preferably, the cantilevered steel platform comprises a steel box girder corbel, a Bailey frame, and an I-beam distribution beam, wherein the Bailey frame is fixed on the steel box girder corbel, and the I-beam is fixed on the Bailey frame Distributed beam; in the cantilevered steel platform, an arc triangular support plate is provided at the connection between the steel box girder corbel and the reinforced load-bearing steel pipe column to improve the connection strength.

Preferably, the steel box girder corbel adopts a rectangular box girder section, and a sliding disassembly platform is added at the cantilever end. The plate is cut into triangular shape without lower flange. The sliding dismantling platform can be integrally processed with the corbel of the steel box, and can also be connected with the corbel by welding; during the construction stage of the overhanging suspended member, no load shall be applied to it, and only during the dismantling It is convenient for the beret to be pushed out, so that the beret is easily disassembled by a lifting machine.

Preferably, a stereotyped clamp is evenly arranged between the bottom of the beret and the corbel of the steel box girder; the stereotyped clamp has a "[" structure, and the stereotyped clamp spans the support rod at the bottom of the beret and has both ends. It is fixedly welded on the corbel of the steel box girder, and the shaped clamp is kept parallel to the corbel of the steel box girder;

Preferably, the upper part of the beret and the I-beam distribution beam are fixed in such a way that all the I-beam distribution beams are supported on the platform of the beray frame, or one end of the I-beam distribution beam is supported on the internal support layer structure, and the other end is supported on the shell. On the mine frame platform; the I-beam distribution beams are all supported on the Bailey frame platform, which means that a shaped U-shaped card is arranged between the upper part of the Bailey frame and the I-beam distribution beam, and there is a gap between the I-beam distribution beams. A connecting plate with connecting holes is fixedly arranged at the place, and the upside-down buckle of the stereotyped U-shaped card fixes the top support of the beret in the stereotyped U-shaped card, and the two legs of the stereotyped U-shaped card extend out of the I-beam distribution beam. At the same time, the gap between the two is matched with the connecting plate with connecting holes, and the bolts and the U-shaped card legs are tightened to realize the connection and fixation of the I-beam distribution beam and the Bailey frame, so that the I-beam distribution beam is fully supported on the Bailey frame. On the platform; one end of the I-beam distribution beam is supported on the internal support layer structure, and the other end is supported on the Bailey frame platform, which means that the pre-embedded pre-embedded card is pre-embedded in the internal support layer structure, and the I-beam distribution beam The end is embedded in the stereotyped pre-embedded card and fixed by bolts. A stereotyped U-shaped card is set between the other side of the I-beam distribution beam and the upper part of the Bailey frame, and a connection hole is fixed at the gap between the I-beam distribution beams. Connecting plate, the shaped U-shaped card is inverted to fix the top support of the beret in the shaped U-shaped card, and the two legs of the shaped U-shaped card extend out of the gap between the I-beam distribution beams and are connected with the belt. The connection plate of the hole is matched, and the bolt is matched and tightened with the outrigger of the U-shaped card, so that one end of the I-beam distribution beam is supported on the internal support layer structure, and the other end is supported on the Bailey frame platform.

Preferably, steel rivets are evenly arranged on the upper wings of the I-beam distribution beam, and the uprights of the dense steel pipe fastener type support frame and the outer scaffold are inserted into the steel rivets, so as to facilitate the support of the dense steel pipe fastener type support frame and the frame body of the outer scaffold. Design, while preventing sliding, to ensure the stability of the dense steel tube fastener type support frame and external scaffolding. Compared with the existing common high-support formwork technology, the support of the present invention greatly reduces the turnover material used for the support, the force transmission system is safe and reliable, and the impact on the construction of the surrounding podium and underground structure areas is reduced. At the same time, the present invention has no bearing capacity requirement for the lower horizontal structure, and avoids waste caused by permanent reinforcement of the support layer structure caused by the one-time overweight accidental load formed in the construction stage. In addition, the customized/existing materials used in the present invention are all revolvable materials, which are green and environmentally friendly, safe and reliable in the construction process, and have a high popularization rate.

Description of drawings

Fig. 1 is the structural representation in the present invention;

Fig. 2 is the front view of accompanying drawing;

Fig. 3 is the A-A sectional view of accompanying drawing 2;

4 is a schematic diagram of the connection between a reinforced load-bearing steel pipe column and a steel box girder corbel in the present invention;

Fig. 5 is the connection schematic diagram of steel box girder corbel, Bailey frame and I-beam distribution beam in the present invention;

6 is a schematic diagram of the connection between the I-beam distribution beam, the dense steel tube fastener type support frame and the outer scaffold in the present invention.

1- Reinforced load-bearing steel pipe column, 2- Built-in steel ring plate, 3- Steel box girder corbel, 4- Bailey frame, 5- I-beam distribution beam, 6- Intensive steel pipe fastener type support frame, 7- Outer scaffolding, 8-overweight overhanging suspended components, 9-triangular support plate, 10-shaped clamps, 11-shaped U-shaped clips, 12-shaped pre-embedded cards, 13-reinforced rivets, 14-pulling holes, 15-grouting hole, 16-connecting plate with connecting hole, 17-internal support layer structure, 18-sliding disassembly platform.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figures 1-6, the present invention provides a technical solution:

A construction method for a super-heavy overhanging overhanging member support system of a super-high-rise residential transfer layer is provided. The platform bears its construction load, so that the over-heavy overhanging suspended members of the super high-rise residential transfer floor have no bearing capacity requirements for the structure below them. While solving the problem that the suspended members have no reliable structural support below the construction stage, it greatly reduces the construction impact on the surrounding podium. and the impact of the construction of the underground structure below it.

Preferably, the balanced load-bearing system includes a dense steel tube fastener type support frame 6;

The cantilevered steel platform includes a steel box girder corbel 3, a Bailey frame 4 and an I-beam distribution beam 5. The Bailey frame 4 is supported on the steel box beam corbel 3 and fixed to each other. The distribution beam 5 is laid on the Bailey frame 4 and fixed to each other, and the inner end of the steel box beam corbel 3 is fixed on the reinforced load-bearing steel pipe column 1;

The balanced load-bearing system is laid on the cantilevered steel platform and fixed to each other by rivets to limit its horizontal displacement. The construction load of the overweight overhanging suspended member 8 is evenly transmitted to the I-beam distribution beam 5 through the dense steel pipe fastener type scaffold 6 , and then transferred to the Bailey frame 4, then transferred to the steel box girder corbel 3, and finally transferred to the reinforced load-bearing steel pipe column 1.

Preferably, the following steps of the construction method are included:

Step 1. Determine the specific position of the steel box girder corbel 3 according to the engineering design drawing and the actual site;

Step 2: Weld the reinforced steel ring plate 2 on the inner wall of the reinforced load-bearing steel pipe column 1 corresponding to the position of the steel box girder corbel 3 in advance, and the reinforced steel ring plate 2 corresponds to the upper and lower flanges of the steel box girder corbel 3; At the same time, an arc-shaped triangular support plate 9 with a positioning function is arranged on the outer wall of the reinforced load-bearing steel pipe column 1 at the position corresponding to the corbel 3 of the steel box girder, and then the reinforced load-bearing steel pipe column 1 is hoisted to the engineering design position. On the inner support layer structure 17 of the layer, pour concrete into the steel tube column;

The reinforced load-bearing steel pipe column generally adopts the original steel pipe column structure of the structural design itself to strengthen the lateral rigidity. Two layers of built-in steel ring plates are added to the upper and lower flanges of the box girder at the corbel position of the docking steel box girder to strengthen the alignment. The lateral stiffness of the steel pipe column, and the construction of the top and bottom plates of the corresponding steel pipe column structure has been completed (see the construction of the steel pipe column and its bottom plate and top plate in the prior art, the internal support layer structure 17 is the unified name of the bottom plate and the top plate in this application. , that is, every two inner support layer structures 17 have steel pipe columns, and the upper and lower inner support layer structures 17 of the steel pipe columns are respectively called the bottom plate and the top plate of the corresponding steel pipe column), which provides reliable lateral force transmission.

Step 3, hoist the steel box girder corbel 3 and fully penetrate and weld it with the reinforced load-bearing steel pipe column 1, then hoist the steel box girder corbel 3 and weld it on the reinforced load-bearing steel pipe column 1, and then fill up the remaining arc triangles The support plate 9 adopts the same welding method to strengthen the connection. The flange width of the corbel of the steel box girder needs to be ≥600mm, so that the Bailey frame can be simply supported in sections on the flange of the corbel of the steel box girder, reducing high-altitude hoisting The length and weight of the Bailey frame, and at the same time, the cantilevered end of the steel box girder grows out of the projection range of the upper overweight overhanging suspended member, so that the Bailey frame can directly transfer the load downward.

Step 4, hoist the beret 4 and fix it on the steel box girder corbel 3 through the stereotyped clamp 10; the beret is a common 321 type highway bridge beret, and the span and the number of beams are determined according to actual needs. According to the hoisting capacity of the project's hoisting equipment, the frame is supported on the aforementioned steel box girder corbels by simply supported beams or continuous beams, and fixed by welding with stereotyped clamps.

Step 5. Lay the I-beam distribution beam 5. The I-beam distribution beam 5 is simply supported between the internal support layer structure 17 and the platform of the Bailey frame 4, and is formed by the round steel U-shaped card 11 and the round steel. The pre-embedded card 12 is respectively fixed with the Bailey frame 4 and the internal support layer structure 17; It is called the top plate or bottom plate of the corresponding steel pipe column) and the designed Bailey frame 4 is not on the same level), which can be directly supported on the Bailey frame 4 platform and widen the length of the Bailey frame 4 platform;

According to the actual situation of the project, one end of the I-beam distribution beam can be supported on the internal support layer structure and the other end is supported on the Bailey frame platform, or all of the I-beam distribution beams can be supported on the Bailey frame platform (the width of the platform is ≥1.5m, and the upper components are aligned), priority One end is supported on the internal support layer structure and the other end is supported on the Bailey frame platform. It is fixed with the internal support layer structure by a stereotyped pre-embedded card, and the Bailey frame is fixed with a stereotyped U-shaped card to prevent rollover and ensure its reliable fixation , and the overhanging end of the I-beam distribution beam is 1m beyond the overweight overhanging suspended member supported to provide the working surface for erecting the outer frame.

Step 6: Fix the upper intensive support scaffold 6 and the outer scaffold 7 poles on the I-beam distribution beam 5, and set up the outer scaffold 7 at the same time;

Reinforced rivets are arranged on the upper flange of the I-beam distribution beam, and the upper dense steel pipe fastener type support frame and the outer scaffolding pole are inserted into steel rivets to facilitate the support of the upper frame body on the platform, and at the same time prevent the steel pipe from sliding to ensure the stability of the frame body; dense steel pipe The main material of the fastener-type support frame is ordinary steel pipe fastener-type scaffolding. The vertical and horizontal spacing of vertical and horizontal poles is ≯ 450mm to ensure that the upper overweight load is evenly transmitted to the lower platform to avoid local stress concentration. The alignment adjustment of the pole under the beam.

Step 7: Set up intensive support scaffolding, lay the formwork required for the overhanging suspended member, bind the steel bars, and pour the overweight outer overhanging suspended member.

Step 8: Remove the formwork required for the overhanging suspended member, remove the intensive support scaffolding, remove the external scaffolding, remove the distribution beam, remove the Bailey frame, and remove the steel box beam corbel.

According to the above construction method, a super-high-rise residential transfer floor overhanging overhanging member support system, a super-high-rise residential conversion layer overhanging overhanging member supporting system, comprising a reinforced load-bearing steel pipe column located below the overhanging suspended member 8 1 and the internal support layer structure 17 under the projection of the internal structure of the externally overhanging suspended member 8 of the conversion layer, characterized in that: a cantilever steel platform is fixedly arranged on one side of the reinforced load-bearing steel pipe column 1, and a dense steel platform is laid on the cantilever steel platform. A balanced load-bearing system constituted by the steel tube fastener type support frame 6 and its horizontal displacement is limited. An outer scaffold 7 is erected on the cantilevered steel platform outside the balanced load-bearing system and fixed to each other. The dense steel tube fastener type support frame 6 and the outer scaffold 7 Parallel to each other, the balanced load-bearing system is located directly below the overhanging suspended member, and the balanced load-bearing system is used to support the overhanging suspended member during the construction stage.

Preferably, a reinforced steel ring plate 2 is fixed on the inner wall of the reinforced load-bearing steel pipe column 1 at the connection with the cantilevered steel platform, and the reinforced load-bearing steel pipe column 1 is filled with concrete; The grouting hole 14 is formed in the middle part of the reinforced steel ring plate 2 to form a grouting hole 15 .

Preferably, the cantilevered steel platform comprises a steel box girder corbel 3, a Bailey frame 4, and an I-beam distribution beam 5, wherein the Bailey frame 4 is fixed on the steel box girder corbel 3, and the Bailey frame 4 is fixed on the steel box beam corbel 3. 4. The I-beam distribution beam 5 is fixed on the upper part; the connection between the steel box girder corbel 3 and the reinforced load-bearing steel pipe column in the cantilevered steel platform is provided with an arc-shaped triangular support plate 9 to improve the connection strength.

Preferably, the steel box girder corbel 3 adopts a rectangular box girder section, and a sliding disassembly platform 18 is added at the cantilever end, and the upper flange of the sliding disassembly platform 18 is consistent with the upper flange of the steel box girder corbel 3 , the webs on both sides are cut into triangles, and there is no lower flange. The sliding and dismantling platform 18 can be integrally processed with the corbel 3 of the steel box, and can also be connected with the corbel by welding; The load is applied, and it is convenient for the beret 4 to be pushed out only when the beret 4 is disassembled, thereby facilitating the disassembly of the beret 4 by a lifting machine.

Preferably, a shaped clamp 10 is evenly arranged between the bottom of the beret frame 4 and the corbel 3 of the steel box girder; the shaped clamp 10 is a "[" structure, and the shaped clamp 10 spans the beret frame 4 The bottom support rod and both ends are fixedly welded on the steel box girder corbel 3, and the stereotyped clamp 10 is kept parallel to the steel box girder corbel 3; on the I-beam distribution beam 5, the wings are evenly arranged with steel rivets 13, densely The vertical rods of the steel pipe fastener type support frame 6 and the outer scaffold 7 are inserted into the steel rivets 13, so as to facilitate the support of the dense steel pipe fastener type support frame 6 and the outer scaffold 7, and at the same time prevent sliding to ensure the dense steel pipe The fastener-type support frame 6 and the outer scaffolding 7 are stable.

Preferably, the upper part of the beret 4 and the I-beam distribution beam 5 are fixed in such a way that the I-beam distribution beam 5 is all supported on the Bere frame platform 4, or one end of the I-beam distribution beam 5 is supported on the internal support layer structure 17. , the other end is supported on the Bailey frame platform 4; the I-beam distribution beams 5 are all supported on the Bailey frame platform 4, which means that a stereotyped U-shaped steel is arranged between the upper part of the Bailey frame 4 and the I-beam distribution beam 5. Card 12, a connecting plate 16 with a connecting hole is fixedly arranged at the gap between the I-beam distribution beams 5, and the stereotyped U-shaped card 12 is inverted to fix the top support of the beret 4 in the stereotyped U-shaped card 12, And the two legs of the stereotyped U-shaped card 12 extend out of the gap between the I-beam distribution beams 5 and at the same time cooperate with the connecting plate 16 with the connecting hole, and tighten the legs of the stereotyped U-shaped card 12 through bolts to realize the I-shaped The steel distribution beam 5 is connected and fixed with the Bailey frame 4 to realize that the I-beam distribution beam 5 is all supported on the Bailey frame platform 4; On the mine frame platform 4 means: the pre-embedded pre-embedded card 12 is pre-embedded in the internal support layer structure 17, and the inner end of the I-beam distribution beam 5 is embedded in the pre-embedded pre-embedded card 12 and fixed by bolts. The I-beam distribution beam 5. A stereotyped U-shaped card 12 is arranged between the other side and the upper part of the Bailey frame 4, and a connecting plate 16 with a connecting hole is fixedly arranged at the gap between the I-beam distribution beams 5. The top support of the lightning rack 4 is fixed in the stereotyped U-shaped card 12, and the two legs of the stereotyped U-shaped card 12 extend out of the gap between the I-beam distribution beams 5 and cooperate with the connection plate 16 with the connection hole. The bolts are matched and tightened with the legs of the U-shaped card 12, so that one end of the I-beam distribution beam 5 is supported on the internal support layer structure 17, and the other end is supported on the Bailey frame platform 4

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A construction method of an overweight overhanging suspended component supporting system of a super high-rise residential conversion layer is characterized by comprising the following steps: the method is characterized in that the construction load of the overweight overhanging suspended component of the transfer floor of the super high-rise residence is transmitted to the overhanging steel platform through the balanced bearing system, and the overhanging steel platform bears the construction load, so that the overweight overhanging suspended component of the transfer floor of the super high-rise residence has no bearing capacity requirement on the structure below the overweight overhanging suspended component, and the influence of the construction on the construction of surrounding skirt buildings and underground structures below the overweight overhanging suspended component is greatly reduced while the problem that the suspended component has no reliable structural support below the construction stage is solved.

2. The method of constructing a super heavy overhanging suspended member support system for a super high-rise residential conversion floor as claimed in claim 1, wherein:

the balanced bearing system comprises an intensive steel pipe fastener type support frame (6);

the cantilever steel platform comprises a steel box girder bracket (3), a bailey truss (4) and an I-steel distribution beam (5), the bailey truss (4) is supported on the steel box girder bracket (3) and fixed with each other, the I-steel distribution beam (5) is laid on the bailey truss (4) and fixed with each other, and the inner end of the steel box girder bracket (3) is fixed on the reinforced bearing steel pipe column (1);

the balanced bearing system is laid on the cantilever steel platform and horizontally limited, the construction load of the overweight cantilever suspended member (8) is uniformly transmitted to the I-shaped steel distribution beam (5) through the dense steel pipe fastener type scaffold (6), then transmitted to the Bailey frame (4), then transmitted to the steel box girder bracket (3), and finally transmitted to the reinforced bearing steel pipe column (1).

3. The method of constructing a super heavy overhanging suspended member support system for a super high residential conversion floor as claimed in claim 2, comprising the steps of:

step one, determining the specific position of a steel box girder bracket (3) according to an engineering design drawing and on-site practice;

step two, strengthening the originally designed steel pipe column in the internal supporting structure (17) below the conversion layer into a reinforced bearing steel pipe column (1), welding a reinforcing ring plate (2) to the position of the contraposition steel corbel in the reinforced bearing steel pipe column (1), and pouring concrete into the steel pipe column;

hoisting a steel box girder bracket (3) and fully penetration welding the steel box girder bracket with the reinforced bearing steel pipe column (1);

hoisting the bailey frames (4) and fixing the bailey frames on the steel box girder brackets (3) through the shaped hoops (10);

laying an I-steel distribution beam (5), wherein the I-steel distribution beam (5) is simply supported between the internal supporting layer structure (17) and the bailey truss (4) platform, and is respectively fixed with the bailey truss (4) and the internal supporting layer structure (17) through a round steel forming U-shaped card (11) and a round steel forming embedded card (12); if no reliable internal supporting layer structure (17) exists, the platform can be directly supported on the bailey truss (4) and the length of the bailey truss (4) is widened;

sixthly, upright rods of upper intensive support scaffolds (6) and outer scaffolds (7) are fixed on the I-steel distribution beam (5), and the outer scaffolds (7) are erected at the same time;

step seven, erecting an intensive support scaffold, laying a template required by the overhanging suspended component, binding reinforcing steel bars, and pouring the overweight overhanging suspended component;

and step eight, sequentially removing the templates required by the cantilever suspended members, removing the intensive support scaffold, removing the external scaffold, removing the distribution beam, removing the bailey frame and removing the steel box girder bracket.

4. The method of claim 3, wherein the system comprises: in the second step and the third step, a reinforced steel ring plate (2) is welded on the inner wall of the reinforced bearing steel pipe column (1) corresponding to the position of the steel box girder bracket (3) in advance, and the reinforced steel ring plate (2) corresponds to the upper flange and the lower flange of the steel box girder bracket (3); simultaneously, the arc triangular support plates (9) with the positioning function are arranged at the positions, corresponding to the steel box girder brackets (3), of the outer walls of the reinforced bearing steel pipe columns (1), then the steel box girder brackets (3) are hoisted and welded on the reinforced bearing steel pipe columns (1), then the residual arc triangular support plates (9) are filled up, and the reinforced connection function is achieved by the aid of the same welding mode.

5. The method of claim 3, wherein the system comprises: in the fourth step, the bailey frames (4) are supported on the steel box girder brackets (3) in a simple beam or continuous beam mode and are welded and fixed on the steel box girder brackets by adopting the shaped hoops (10).

6. The overweight overhanging suspended member supporting system of the transfer floor of the super high-rise residential building, which is required by the construction method according to any one of the claims 1 to 5, comprises a reinforced bearing steel pipe column (1) positioned below an overhanging suspended member (8), and is characterized in that:

the steel platform of encorbelmenting is fixed to be set up in strenghthened type bearing steel-pipe column (1) one side, lay the balanced bearing system that constitutes by intensive steel pipe fastener formula support frame (6) and restrict its horizontal displacement on the steel platform of encorbelmenting, set up outer scaffold (7) and fix each other on the steel platform of encorbelmenting in the balanced bearing system outside, intensive steel pipe fastener formula support frame (6) are parallel to each other with outer scaffold (7), this balanced bearing system is located and encorbelments suspended component under, this balanced bearing system is used for supporting the unsettled component of encorbelmenting in the construction stage.

7. The superelevation residential conversion floor overweight cantilever suspended member support system of claim 6, wherein: a reinforced steel ring plate (2) is fixedly arranged on the inner wall of a reinforced bearing steel pipe column (1) at the joint of the reinforced bearing steel pipe column and the cantilever steel platform, and the reinforced bearing steel pipe column (1) is filled with concrete;

grout outlet holes (14) are uniformly distributed around the reinforced steel ring plate (2), and the middle part of the reinforced steel ring plate (2) is hollow to form grouting holes (15).

8. The superelevation residential conversion floor overweight cantilever suspended member support system of claim 6, wherein: the cantilever steel platform comprises a steel box girder bracket (3), a bailey truss (4) and an I-shaped steel distribution beam (5), wherein the bailey truss (4) is fixed on the steel box girder bracket (3), and the I-shaped steel distribution beam (5) is fixed on the bailey truss (4);

an auxiliary arc triangular support plate (9) is arranged at the joint of the steel box girder bracket (3) and the reinforced bearing steel pipe column in the overhanging steel platform and is used for improving the connection strength;

setting shaped hoops (10) between the bottom of the bailey truss (4) and the steel box girder bracket (3); this regularization clamp (10) are "[" structure, and this regularization clamp (10) span bailey frame (4) bottom sprag pole and both ends fixed welding are on steel box girder bracket (3), and this regularization clamp (10) and steel box girder bracket (3) keep parallel.

9. The superelevation residential conversion floor overweight cantilever suspended member support system of claim 8, wherein: the steel box girder bracket (3) adopts a rectangular box girder section, a sliding and disassembling platform (18) is additionally arranged at the overhanging end, the upper flange of the sliding and disassembling platform (18) is consistent with the upper flange of the steel box girder bracket (3), and webs on two sides are cut into triangles without lower flanges.

10. The superelevation residential conversion floor overweight cantilever suspended member support system of claim 8, wherein: evenly arrange reinforcing bar rivet (13) at I-steel distributor beam (5) upper wing board, in the pole setting of intensive shaped steel pipe fastener formula support frame (6) and outer scaffold (7) inserted reinforcing bar rivet (13) to the support body of convenient intensive shaped steel pipe fastener formula support frame (6) and outer scaffold (7) is established, restricts its horizontal displacement simultaneously, prevents to slide, ensures that intensive shaped steel pipe fastener formula support frame (6) and outer scaffold (7) are stable.

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