Cantilever supporting structure

Abstract

The utility model discloses an overhanging supporting structure. The overhanging supporting structure comprises an overhanging assembly, a plurality of U-shaped ring assemblies and an inclined strut assembly. The overhanging assembly comprises I-shaped steel, the inner section of the I-shaped steel is pressed on the floor slab structure, and the outer section of the I-shaped steel is overhung outside the floor slab structure; the U-shaped ring assemblies are arranged at the inner end and the middle of the I-shaped steel correspondingly and used for locking the I-shaped steel and a floor structure of the floor into a whole. One end of the inclined strut assembly is arranged at the outer end of the I-shaped steel outer section, and the other end is arranged at the lower floor structure; wherein the outer section of the I-shaped steel is used for supporting the overhanging part of the upper floor structure. The overhanging supporting structure has the advantages that the construction progress can be accelerated, the overhanging supporting structure is not limited by other working procedures, construction is easy, construction can be completed through conventional work types and conventional materials, and secondary machining is not needed.

Description

Technical Field

[0001] The utility model relates to the field of building construction, and particularly to a cantilever support structure. Background Art

[0002] With the continuous development of society, building users not only require buildings to have functional uses, but also put forward higher and higher requirements for the shape, aesthetics, economy, etc. of buildings. This has promoted the emergence of many different types of building structures, such as high-altitude cantilever structures, which can optimize the shape of the building facade, increase the usable area of the building, and at the same time meet the aesthetic and economic requirements of the building. Because the high-altitude large cantilever structure has a long cantilever, high height, large construction load and is high-altitude operation, the construction difficulty is large, the risk is high, and it is easy to cause safety and quality problems. Therefore, the construction unit must scientifically select, reasonably design and carefully construct the formwork support system to ensure construction safety, guarantee project quality, and achieve advanced technology and reasonable economy.

[0003] Problems existing in the construction of conventional cantilever formwork schemes:

[0004] ① Ground-supported formwork: It has a long construction period, high construction cost, and many safety hazards, and is suitable for working conditions with a relatively low cantilever layer

[0005] height (as shown in Figure 1 );

[0006] ② Steel cantilever formwork 2: It has high requirements for cantilever quality and single safety guarantee; when adding wire ropes to unload

[0007] loads, the working condition applicability is low and the safety measures are relatively lagging (as shown in Figure 2 );

[0008] ③ Triangular truss support formwork 3: It is suitable for shear wall structures, the construction process is complex, it has requirements for the structural strength of the support layer, affects the construction progress, and has a high cost. It is suitable for structures with a small cantilever length (as shown in Figure 3 );

[0009] ④ Bailey truss cantilever formwork 4: The construction process is complex, highly professional, and costly. It is suitable for working conditions with a small single-layer area (as shown in Figure 4 ).

[0010] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0011] The purpose of the present utility model is to provide a cantilever support structure, which can accelerate the construction progress, is not restricted by other processes, is simple to construct, can be completed with conventional types of work and conventional materials, and does not require secondary processing.

[0012] To achieve the above object, the present utility model provides a cantilever support structure, including a cantilever component, a plurality of U-shaped ring components and a diagonal brace component; the cantilever component includes an I-beam, the inner section of the I-beam is pressed on the floor slab structure of this layer, and the outer section projects beyond the floor slab structure of this layer; a plurality of U-shaped ring components are respectively arranged at the inner end and the middle of the I-beam, and the U-shaped ring components are used to lock the I-beam and the floor slab structure of this layer into one body; one end of the diagonal brace component is arranged at the outer end of the outer section of the I-beam, and the other end is arranged at the floor slab structure of the lower layer; wherein the outer section of the I-beam is used for supporting the cantilever part of the floor slab structure of the upper layer.

[0013] In a preferred embodiment, the U-shaped ring component includes a U-shaped ring, the bottom edge and the lower parts of the two side edges of the U-shaped ring are embedded in the concrete of the floor slab structure of this layer, and the upper parts of the two side edges of the U-shaped ring fix the I-beam and the floor slab structure of this layer together through a pressing plate pressed on the I-beam, a gasket and double nuts.

[0014] In a preferred embodiment, the threads on the upper parts of the two side edges of the U-shaped ring protrude no less than two threads outside the gasket and the double nuts.

[0015] In a preferred embodiment, the total length of the bottom edge and the lower parts of the two side edges of the U-shaped ring embedded in the concrete of the floor slab structure of this layer is not less than 300 mm.

[0016] In a preferred embodiment, the U-shaped ring component includes a U-shaped ring, after the U-shaped ring penetrates through the floor slab structure from the lower surface of the floor slab structure of this layer, the upper parts of the two side edges of the U-shaped ring fix the I-beam and the floor slab structure of this layer together through a pressing plate pressed on the I-beam, a gasket and double nuts.

[0017] In a preferred embodiment, the cantilever component further includes an under-board pad, which is arranged between the bottom edge of the U-shaped ring and the lower surface of the floor slab structure of this layer.

[0018] In a preferred embodiment, the diagonal brace component includes a long steel pipe and a short steel pipe; the lower end of the long steel pipe is arranged at the floor slab structure of this layer; the short steel pipe is fixedly connected to the bottom surface of the end of the outer section of the I-beam, and the upper end of the long steel pipe is fixedly connected in a cross-bracing manner with both ends of the short steel pipe.

[0019] In a preferred embodiment, the diagonal brace component further includes a steel bar peg, one end of which is embedded in the concrete of the floor slab structure of this layer at an angle with the floor slab structure of this layer, and the upper end penetrates into the lower end of the long steel pipe.

[0020] In a preferred embodiment, the angle between the steel bar peg and the floor slab structure of this layer is 60°.

[0021] In a preferred embodiment, the cantilever component further includes an anchoring backing plate and a fulcrum backing plate; the anchoring backing plate is arranged at each U-shaped ring component and is located between the lower surface of the I-beam and the upper surface of the floor structure of this layer; the fulcrum backing plate is arranged at the fulcrum of the cantilever component and is located between the lower surface of the I-beam and the upper surface of the floor structure of this layer, and the fulcrum is located at the outer edge of the upper surface of the side beam of the floor structure of this layer.

[0022] Compared with the prior art, the cantilever support structure of the present utility model has the following beneficial effects: This solution can accelerate the construction progress and is not restricted by other processes; the construction is simple and can be completed with conventional types of work and conventional materials without secondary processing. The construction cost is relatively low, conventional materials can be used, and the material consumption is small, and it can be recycled and reused. The safety guarantee is high. The steel section cantilever is used as the main stress platform of the formwork support, and the calculation needs to meet all construction loads. The lower inclined support component increases the safety factor in use and ensures construction safety. The practicability is relatively high. It is more applicable than the conventional cantilever scheme of the prior art and can meet most construction conditions. Description of the Drawings

[0023] Figures 1 to 4 is a schematic structural diagram of four formwork support structures according to an embodiment of the prior art;

[0024] Figure 5 is a schematic structural diagram of the cantilever support structure according to an embodiment of the present utility model;

[0025] Figure 6 is a front view schematic diagram of the U-shaped ring component according to an embodiment of the present utility model;

[0026] Figure 7 is a side view schematic diagram of the U-shaped ring component according to an embodiment of the present utility model;

[0027] Figure 8 is a partially enlarged side view schematic diagram at the upper end I of the inclined support component according to an embodiment of the present utility model;

[0028] Figure 9 is a partially enlarged top view schematic diagram at the upper end I of the inclined support component according to an embodiment of the present utility model;

[0029] Figure 10 is a front view schematic diagram of the inclined support component according to an embodiment of the present utility model;

[0030] Figure 11 is a partially enlarged front view schematic diagram at the lower end II of the inclined support component according to an embodiment of the present utility model.

[0031] Main reference numeral description:

[0032] 1-ground type formwork, 2-pure steel cantilever formwork, 3-triangular truss support formwork, 4-Bailey truss cantilever formwork, 10-cantilever assembly, 101-I-beam, 102-anchor pad, 103-fulcrum pad, 20-horizontal protection net, 30-diagonal bracing assembly, 301-long steel pipe, 302-short steel pipe, 303-rebar peg, 40-scaffolding board, 50-guardrail, 60-U-ring assembly, 601-pressure plate, 602-wooden wedge, 103-plate under the board, 604-connecting ribs, 70-slab structure of this floor, 80-slab structure of the lower floor. DETAILED DESCRIPTION

[0033] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0034] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0035] like Figure 5 As shown, a cantilever support structure according to a preferred embodiment of the utility model includes a cantilever assembly 10, a plurality of U-shaped ring assemblies 60 and a diagonal brace assembly 30; the cantilever assembly 10 includes an I-beam 101, the inner section of the I-beam 101 is pressed on the floor structure of the current layer, and the outer section is cantilevered outside the floor structure of the current layer; a plurality of U-shaped ring assemblies 60 are respectively arranged at the inner end and the middle part of the I-beam 101, and the U-shaped ring assembly 60 is used to lock the I-beam 101 and the floor structure of the current layer into one; one end of the diagonal brace assembly 30 is arranged at the outer end of the outer section of the I-beam 101, and the other end is arranged at the lower floor structure; wherein the outer section of the I-beam 101 is used to support the cantilevered part of the upper floor structure. The I-beam of this embodiment adopts a 20a I-beam, and the anchoring length is 1.5 times the cantilever length, but the utility model is not limited thereto.

[0036] like Figure 6 As shown, in some embodiments, the U-shaped ring assembly 60 includes a U-shaped ring, the bottom edge and the lower part of the two sides of the U-shaped ring are embedded in the concrete of the floor structure of the current layer, and the upper part of the two sides of the U-shaped ring is fixed to the I-beam 101 and the floor structure of the current layer by means of a pressure plate, a gasket and a double nut pressed on the I-beam 101. The threads on the upper part of the two sides of the U-shaped ring are exposed by no less than two buckles outside the gasket and the double nut. The total length of the bottom edge and the lower part of the two sides of the U-shaped ring embedded in the concrete of the floor structure of the current layer is not less than 300 mm.

[0037] In some embodiments, generally two sets of U-shaped ring assemblies 60 are used at the tail of the inner section of the I-beam 101, and the bottom edges of the two sets of U-shaped rings are usually connected by two connecting bars parallel to the length direction of the I-beam 101.

[0038] In some embodiments, the fixed end (the tail end of the inner section) of the cantilever beam of the I-beam 101 is generally fixed to the building structure beam slab (the floor slab structure of this layer) by two pairs of anchor bolts (U-shaped rings). The fixing method uses Φ20 bolts as the anchor bars of the cantilever I-beam 101, and a pressing plate made of angle steel is used for connection and fixation on the bolts. The specification of the angle steel is not less than 63mm×63mm×6mm. Steel washers and double nuts are used for fixation on the angle steel. The exposed thread of the anchor bolt is not less than two threads. The gap between the anchor bolt and the I-beam 101 is filled and tamped with wooden wedges, as Figure 7 shown.

[0039] In some embodiments, the total anchorage length of the anchor bars anchored in the concrete is not less than 300mm. When the anchor bars are seated on the slab of the floor, the anchor feet of the anchor bars (U-shaped rings) should be reversed for stable placement. The anchor feet of the anchor bars should be placed under the bottom bars of the lower slab mesh reinforcement of the floor slab structure of this layer and tied together with the bottom bars of the lower slab mesh reinforcement. When the anchor bars are on the cross beam of the floor slab structure of this layer, the anchor feet of the anchor bars should be in the same direction for easy placement. The anchor feet of the anchor bars should be placed under the first row of beam longitudinal bars of the cross beam surface reinforcement and tied together.

[0040] In some embodiments, for the beam slab parts where the anchor bars of some cantilever I-beams 101 are concentrated, reinforcement measures are taken by setting the anchor bar embedded reinforcement bars throughout the length and adding movable jacks to support the upper floor slab.

[0041] In some embodiments, when there is no reinforcement in the upper part of the floor slab at the embedded part of the U-shaped ring steel bar anchoring circle of some profiled steel cantilever platforms, reinforcement is carried out by setting the anchor bar embedded reinforcement bars throughout the length.

[0042] Please refer to Figure 7 shown. In some embodiments, another implementation of the U-shaped ring assembly 60 is that after the U-shaped ring penetrates through the floor slab structure of this layer from the lower surface of the floor slab structure of this layer, the upper parts of both sides of the U-shaped ring fix the I-beam 101 and the floor slab structure of this layer together through a pressing plate, washers and double nuts pressed on the I-beam 101.

[0043] In some embodiments, the cantilever assembly 10 further includes a bottom plate under the slab, and the bottom plate under the slab is arranged between the bottom edge of the U-shaped ring and the lower surface of the floor slab structure of this layer.

[0044] As Figures 8 to 9As shown, in some embodiments, the diagonal bracing assembly 30 includes a long steel pipe and a short steel pipe; the lower end of the long steel pipe is disposed at the floor structure of this layer; the middle of the short steel pipe is fixedly connected to the bottom surface of the outer end of the I-beam 101, and the upper end of the long steel pipe is fixedly connected to the two ends of the short steel pipe in a cross-bracing manner. Generally, two long steel pipes are provided for the diagonal bracing assembly 30, and the upper ends of the long steel pipes are fixedly connected to the two ends of the short steel pipe, which can be connected by welding or snap connection, etc. In this embodiment, the specifications of the long steel pipe and the short steel pipe are 48*3.5 steel pipes.

[0045] As Figures 10 to 11 shown, in some embodiments, the diagonal bracing assembly 30 further includes a reinforcing bar stub. One end of the reinforcing bar stub is embedded in the concrete of the floor structure of this layer at an angle with the floor structure of this layer, and the upper end is inserted into the lower end of the long steel pipe, and the inserted length is not less than 150 mm. The angle between the reinforcing bar stub and the floor structure of this layer is about 60°, and it can be adjusted within a certain range according to the actual situation on site.

[0046] Please refer to Figure 5 and Figure 7 , in some embodiments, the cantilever assembly 10 further includes an anchoring backing plate and a fulcrum backing plate; the anchoring backing plate is disposed at each U-shaped ring assembly 60 and is located between the lower surface of the I-beam 101 and the upper surface of the floor structure of this layer; the fulcrum backing plate is disposed at the fulcrum of the cantilever assembly 10 and is located between the lower surface of the I-beam 101 and the upper surface of the floor structure of this layer, and the fulcrum is located at the outer edge of the upper surface of the side beam of the floor structure of this layer. Both the anchoring backing plate and the fulcrum backing plate are used to increase the contact area between the I-beam 101 and the floor structure of this layer and reduce the pressure. In this embodiment, the specification sizes of the anchoring backing plate and the fulcrum backing plate are 100×150×10 mm and 100×100×10 mm respectively.

[0047] In some embodiments, when the elevations of the structural floor surfaces are inconsistent, causing the front fulcrum to be suspended, a steel plate or an I-beam 101 (when the suspension is large) is added at the fulcrum of the I-beam 101 to level it, and at the same time, the embedded anchor bars (U-shaped rings) at the fulcrum should be lengthened; when the rear fulcrum is suspended, in addition to adding a cushion block at the suspended position, an additional anchoring point should be added at the rear fixed end of the cross beam to make the rear anchoring end of the cross beam share the force together.

[0048] In some embodiments, the construction steps of the cantilever support structure of the present utility model are generally as follows: embedding the U-shaped rings of the cantilever beam (I-beam 101) and the reinforcing bar stubs of the diagonal bracing assembly 30 → installing the cantilever beam → installing the lower diagonal bracing assembly 30 of the cantilever beam → erecting the formwork → hanging the safety net → formwork acceptance.

[0049] In summary, the cantilever support structure of the present utility model has the following advantages: This solution can accelerate the construction progress and is not restricted by other processes; the construction is simple and can be completed using conventional types of work and conventional materials without secondary processing. The construction cost is relatively low, conventional materials can be used, and the material consumption is small, and it can be recycled and reused. The safety guarantee is high. The steel cantilever serves as the main stress platform for the formwork, and the calculation needs to meet all construction loads. The lower diagonal bracing components increase the safety factor during use and ensure construction safety. The practicability is relatively high. It is more applicable than the conventional cantilever solutions of the prior art and can meet most construction conditions.

[0050] The foregoing description of specific exemplary embodiments of the present utility model is for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A cantilever support structure, characterized in that: include: A cantilever assembly, comprising an I-beam, the inner section of which is pressed on the floor structure of the current floor, and the outer section of which is cantilevered outside the floor structure of the current floor; A plurality of U-shaped ring components, which are respectively arranged at the inner end and the middle part of the I-beam, and the U-shaped ring components are used to lock the I-beam and the floor structure of the current layer into one; as well as A diagonal brace assembly, one end of which is arranged at the outer end of the outer section of the I-beam, and the other end is arranged at the lower floor structure; The outer section of the I-beam is used to support the cantilevered part of the upper floor structure.

2. The cantilever support structure according to claim 1, characterized in that: The U-shaped ring assembly includes a U-shaped ring, the bottom edge and the lower parts of the two side edges of the U-shaped ring are embedded in the concrete of the floor structure of the current layer, and the upper parts of the two side edges of the U-shaped ring are fixed to the I-beam and the floor structure of the current layer by means of a pressure plate pressed on the I-beam, a gasket and a double nut.

3. The cantilever support structure according to claim 2, characterized in that: The threads on the upper parts of both sides of the U-shaped ring are exposed beyond the gasket and the double nut by no less than two threads.

4. The cantilever support structure according to claim 2, characterized in that: The total length of the bottom edge and the lower parts of the two side edges of the U-shaped ring embedded in the concrete of the floor structure of the current layer is not less than 300 mm.

5. The cantilever support structure according to claim 1, characterized in that: The U-shaped ring assembly includes a U-shaped ring, which penetrates the floor structure of the current floor from the lower surface of the floor structure of the current floor. The upper parts of the two side edges of the U-shaped ring are fixed to the I-beam and the floor structure of the current floor through a pressure plate, a gasket and a double nut pressed on the I-beam.

6. The cantilever support structure according to claim 5, characterized in that: The cantilever assembly also includes a bottom plate, which is arranged between the bottom edge of the U-shaped ring and the lower surface of the floor structure of the current layer.

7. The cantilever support structure according to claim 1, characterized in that: The diagonal brace assembly comprises: A long steel pipe, the lower end of which is arranged at the floor structure of the current layer; and The short steel pipe is fixedly connected to the bottom surface of the outer end of the I-beam, and the upper end of the long steel pipe is fixedly connected to the two ends of the short steel pipe.

8. The cantilever support structure according to claim 7, characterized in that: The diagonal bracing assembly also includes a steel bar peg, one end of which is pre-buried in the concrete of the floor structure of the current floor at an angle with the floor structure of the current floor, and the upper end is inserted into the lower end of the long steel pipe.

9. The cantilever support structure according to claim 8, characterized in that: The angle between the steel bar peg and the floor structure of the current layer is 60°.

10. The cantilever support structure according to claim 1, characterized in that: The cantilever assembly also includes: An anchoring pad, which is arranged at each of the U-shaped ring assemblies and is located between the lower surface of the I-beam and the upper surface of the floor structure of the current layer; and A fulcrum pad is arranged at the fulcrum of the cantilever assembly and is located between the lower surface of the I-beam and the upper surface of the floor structure of this layer. The fulcrum is located at the outer edge of the upper surface of the side beam of the floor structure of this layer.

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