Fourth-generation residence cantilever structure operation supporting system and construction method thereof

Abstract

The invention discloses a fourth-generation residence cantilever structure operation supporting system and a construction method thereof, and relates to the technical field of constructional engineering.The cantilever structure operation supporting system comprises a supporting platform and a scaffold, a cantilever formwork is arranged on the scaffold, and the scaffold is connected with a construction floor where a cantilever structure needing to be constructed is located; the supporting platform comprises a supporting cross beam which is arranged in the horizontal direction, the first end of the supporting cross beam is connected with the lower layer of the cantilever structure needing to be constructed, the scaffold abuts against the supporting cross beam from the upper portion, and a plurality of positioning pieces are arranged on the supporting cross beam and inserted into the bottom ends of vertical rods of the scaffold; the first end of the inclined supporting rod is connected with the lower second layer of the cantilever structure needing to be constructed, and the second end of the inclined supporting rod is connected with the second end of the supporting cross beam; the upper end of the vertical supporting rod is connected with the supporting cross beam, and the lower end of the vertical supporting rod is connected with the inclined supporting rod. According to the cantilever structure operation supporting system, the reliability and safety of cantilever structure operation can be improved, and the cantilever length is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a fourth-generation residential cantilever structure operation support system and a construction method thereof. Background Art

[0002] With the rapid development of urbanization, high-rise residential buildings are increasing in number. To meet fire safety requirements and ensure good apartment layouts, most residential buildings have adopted fire corridors. This design not only improves apartment layouts but also ensures fire protection requirements. However, many fire corridors are not arranged from bottom to top, making construction difficult, posing a high safety hazard, and making it difficult to ensure construction quality.

[0003] The technology of traditional cantilever scaffolding has certain problems in terms of safety, reliability and practicality. Not only is the frame not firmly fixed, it will swing significantly due to the influence of wind load, construction load, etc., but the cantilever length of the scaffolding is limited and the scope of application is small.

[0004] How to improve the reliability and safety of cantilever structure operations and increase the cantilever length is a technical problem that technicians in this field need to solve. Summary of the Invention

[0005] Based on the above, the purpose of the present invention is to provide a support system for cantilever structure operations in the air, which can improve the reliability and safety of cantilever structure operations and increase the cantilever length.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A support system for an overhead cantilever structure operation includes a support platform and a scaffolding. The cantilever formwork is arranged on the scaffolding. The scaffolding is connected to the construction floor where the cantilever structure to be constructed is located. The support platform includes:

[0008] A support beam is arranged in a horizontal direction, a first end of the support beam is connected to the next layer of the cantilever structure to be constructed, the scaffold is pressed against the support beam from above, and a plurality of positioning members are provided on the support beam, and the positioning members are inserted into the bottom ends of the uprights of the scaffold in a one-to-one correspondence;

[0009] a diagonal brace, wherein a first end of the diagonal brace is connected to the lower two floors of the cantilever structure to be constructed, and a second end of the diagonal brace is connected to the second end of the supporting beam, for supporting the supporting beam; and

[0010] The vertical support rod is arranged in the vertical direction, with the upper end connected to the supporting beam and the lower end connected to the diagonal support rod. All the first ends correspond to the fixed ends of the rods, and the second ends correspond to the free ends of the rods.

[0011] As a preferred solution for the cantilever structure operation support system, pre-buried U-shaped anchor bolts are provided on the floor slab of the next layer of the cantilever structure to be constructed. Both ends of the U-shaped anchor bolts are pre-buried in the ground, and the first end of the supporting beam is passed through the U-shaped anchor bolts.

[0012] As a preferred solution for the cantilever structure operation support system, the outer ends of the floor slabs of the lower two floors of the cantilever structure to be constructed are provided with pre-embedded anchor bolts, and the first end of the diagonal brace is provided with an attachment plate, and the attachment plate is fixedly connected to the anchor bolts by nuts.

[0013] As a preferred solution for the cantilever structure operation support system, the positioning member adopts connecting steel bars, and the connecting steel bars are welded to the supporting beam along the vertical direction.

[0014] As a preferred solution for the cantilever structure operation support system, the supporting crossbeam and / or the diagonal support rod and / or the vertical support rod are made of I-shaped steel.

[0015] As a preferred solution for the cantilever structure operation support system, a protective net is laid between the supporting beam and the scaffolding.

[0016] A construction method for the cantilever structure support system is also provided, comprising the following steps:

[0017] Arranging the positioning member on the supporting beam;

[0018] Connecting the supporting beam to the next layer of the cantilever structure to be constructed;

[0019] Connecting the diagonal bracing rods to the lower two layers of the cantilever structure to be constructed and the supporting beams respectively;

[0020] Connecting the vertical bracing rods to the supporting beams and the diagonal bracing rods respectively;

[0021] Installing the scaffold on the supporting beam so that the positioning member is inserted into the bottom end of the scaffold;

[0022] Connecting the scaffold to the construction floor where the cantilever structure to be constructed is located;

[0023] Arranging the cantilever formwork on the scaffold;

[0024] Concrete is poured in the space enclosed by the cantilever formwork.

[0025] As a preferred solution for the construction method of the cantilever structure support system, the specific operation of the step of setting the positioning member on the supporting beam is as follows:

[0026] Connecting steel bars arranged along the vertical direction are welded on the supporting cross beam.

[0027] As a preferred solution of the construction method of the cantilever structure support system, before the step of connecting the support beam to the next layer of the cantilever structure to be constructed, the following steps are also included:

[0028] When pouring the next floor slab of the cantilever structure that needs to be constructed, embed U-shaped anchor bolts in advance.

[0029] As a preferred solution of the construction method of the cantilever structure support system, before the step of connecting the diagonal bracing rods to the lower two floors of the cantilever structure to be constructed, the following steps are also included:

[0030] When pouring the lower two-story slabs of the cantilever structure that needs to be constructed, pre-embed the anchor bolts.

[0031] The beneficial effects of the present invention are:

[0032] The cantilever structure operation support system provided by the present invention includes a support platform and a scaffolding. The scaffolding is connected to the construction floor where the cantilever structure to be constructed is located. The support platform is used to support the scaffolding, wherein the support platform includes a supporting beam and diagonal braces and vertical braces that provide support for the supporting beam. The scaffolding is pressed against the supporting beam from above. The positioning pieces on the supporting beam are inserted into the bottom ends of the vertical poles of the scaffolding to limit the scaffolding. The supporting beam and the diagonal braces are respectively connected to the next floor and the next two floors of the cantilever structure to be constructed. The setting of the vertical braces further strengthens the supporting stability of the diagonal braces on the supporting beam. The cantilever structure operation support system provided by the present invention relies on three floors for multi-point support, and the support platform provides reliable support and limitation for the scaffolding, which greatly improves the reliability and safety of cantilever structure operations and also increases the upper limit of the cantilever length. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0034] Figure 1 This is a schematic structural diagram of a cantilever structure operation support system provided in the first embodiment of the present invention;

[0035] Figure 2 yes Figure 1 A magnified schematic diagram of the middle area A;

[0036] Figure 31 is a side view of a cantilever structure work support system provided in Example 1 of the present invention;

[0037] Figure 4 yes Figure 3 An enlarged schematic diagram of a cross-sectional view of region B;

[0038] Figure 5 This is a flow chart of the main steps of the construction method of the cantilever structure work support system provided in the second embodiment of the present invention.

[0039] In the picture:

[0040] 100, construction floor; 200, next floor; 300, two floors below; 11, supporting beam; 12, diagonal brace; 13, vertical brace; 2, scaffolding; 21, vertical pole; 22, wall connection; 3, positioning piece; 4, U-shaped anchor bolt; 5, anchor bolt; 6, attachment plate; 7, guardrail; 8, cantilever formwork; 9, cantilever structure. DETAILED DESCRIPTION

[0041] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0042] Example 1

[0043] like Figure 1-Figure 4 As shown, this embodiment provides a support system for an air-mounted cantilever structure operation, which is used to support processes such as template setting and concrete pouring of the cantilever structure 9, including a support platform and a scaffolding 2. The cantilever formwork 8 is set on the scaffolding 2, and the scaffolding 2 is connected to the construction floor 100 where the cantilever structure 9 to be constructed is located. The support platform includes: a supporting beam 11, an oblique support rod 12 and a vertical support rod 13. The supporting beam 11 is arranged in the horizontal direction, and the first end of the supporting beam 11 is connected to the next layer 200 of the cantilever structure 9 to be constructed. The scaffolding 2 is pressed against the supporting beam 11 from above. A plurality of positioning members 3 are provided on the supporting beam 11. The positioning members 3 are inserted into the bottom ends of the vertical poles 21 of the scaffolding 2 one by one. The first end of the diagonal brace 12 is connected to the lower two layers 300 of the cantilever structure 9 to be constructed, and the second end is connected to the second end of the supporting beam 11, which is used to support the supporting beam 11. The vertical brace 13 is arranged in the vertical direction, with the upper end connected to the supporting beam 11 and the lower end connected to the diagonal brace 12.

[0044] Specifically, since the scaffolding 2 itself is directly connected to the construction floor 100 where the cantilever structure 9 to be constructed is located, and the supporting beams 11 and the diagonal braces 12 are respectively connected to the next floor 200 and the next two floors 300 of the cantilever structure 9 to be constructed, the cantilever structure operation support system relies on the three-story floor for multi-point support. The setting of the vertical braces 13 further strengthens the supporting stability of the diagonal braces 12 on the supporting beams 11, and the support platform provides reliable support and limitation for the scaffolding 2, which greatly improves the reliability and safety of the cantilever structure 9 operation, and also increases the upper limit of the cantilever length.

[0045] Optionally, a pre-buried U-shaped anchor bolt 4 is provided on the next layer 200 of the cantilever structure 9 to be constructed, and the first end of the supporting beam 11 is passed through the U-shaped anchor bolt 4. Specifically, the U-shaped anchor bolt 4 is provided on the floor slab of the next layer 200 of the cantilever structure 9 to be constructed, and both ends of the U-shaped anchor bolt 4 are buried in the ground. Multiple U-shaped anchor bolts 4 can be provided corresponding to the same supporting beam 11, that is, one supporting beam 11 is passed through multiple U-shaped anchor bolts 4 at the same time, thereby enhancing the reliability of the connection.

[0046] Preferably, the support beam 11 fits tightly against the inner ring of the U-shaped anchor bolt 4 to prevent the support beam 11 from tipping over or tilting.

[0047] Optionally, pre-buried anchor bolts 5 are provided at the outer ends of the floor slabs of the lower two floors 300 of the cantilever structure 9 to be constructed, and attachment plates 6 are provided at the first ends of the diagonal braces 12. The attachment plates 6 are fixedly connected to the anchor bolts 5 via nuts. Specifically, multiple anchor bolts 5 can be provided corresponding to the same attachment plate 6, that is, one attachment plate 6 is simultaneously connected to multiple anchor bolts 5, thereby enhancing the reliability of the connection.

[0048] It should be noted that the floors above the second floor can be the next floor 200 and / or the next two floors 300 of the cantilever structure 9 that needs to be constructed, that is, U-shaped anchor bolts 4 or anchor bolts 5 can be pre-embedded on the floor slabs, or U-shaped anchor bolts 4 and anchor bolts 5 can be pre-embedded at the same time, so as to connect with the supporting beams 11 and diagonal braces 12 respectively when operating the cantilever structures 9 corresponding to different floors.

[0049] Since the supporting beam 11, the diagonal brace 12 and the vertical brace 13 can form an independent whole, in different construction environments, it is only necessary to adjust the connection angle of the supporting beam 11 and the diagonal brace 12 and the angle of the attachment plate 6 accordingly to be applicable to floors of different heights. Therefore, it has very high versatility and can be used multiple times and in multiple projects. The material turnover rate is high and the construction cost is also reduced.

[0050] Optionally, the positioning member 3 is a connecting steel bar, which is vertically welded to the supporting beam 11. In this embodiment, the length of the connecting steel bar is not less than 100 mm and the diameter is 25 mm.

[0051] Preferably, the supporting beam 11 is made of I-shaped steel.

[0052] Preferably, the diagonal bracing rod 12 is made of I-shaped steel.

[0053] Preferably, the vertical support rod 13 is made of I-shaped steel.

[0054] Optionally, a protective net is laid between the supporting beam 11 and the scaffold 2 to prevent construction objects or construction workers from falling from the scaffold 2. In this embodiment, the protective net can be a large-mesh net.

[0055] Optionally, a guardrail 7 is provided on the outside of the scaffolding 2 to prevent construction workers from accidentally falling from the scaffolding 2 .

[0056] Optionally, the scaffolding 2 is connected to the side beams of the construction floor 100 where the cantilever structure 9 to be constructed is located through the wall connecting member 22. Specifically, the wall connecting member 22 is made of a steel pipe, and the wall connecting member 22 is connected to the side beams.

[0057] Example 2

[0058] like Figure 5 As shown, this embodiment provides an implementation scheme, a construction method of a cantilever structure support system, which is mainly used to construct a cantilever structure 9 such as a fire corridor outside the main body of a high-rise building. The construction method mainly includes the following steps:

[0059] A positioning member 3 is provided on the supporting beam 11;

[0060] Connect the supporting beam 11 to the next layer 200 of the cantilever structure 9 to be constructed;

[0061] Connect the diagonal bracing rods 12 to the lower two layers 300 of the cantilever structure 9 to be constructed and the supporting beams 11 respectively;

[0062] Connect the vertical bracing rods 13 to the supporting crossbeams 11 and the diagonal bracing rods 12 respectively;

[0063] Install the scaffold 2 on the supporting beam 11 so that the positioning member 3 is inserted into the bottom end of the scaffold 2;

[0064] Connect the scaffolding 2 to the construction floor 100 where the cantilever structure 9 to be constructed is located;

[0065] Setting a cantilever formwork 8 on the scaffolding 2;

[0066] Concrete is poured in the space enclosed by the cantilever formwork 8.

[0067] Optionally, the specific operation of setting the positioning member 3 on the supporting beam 11 is:

[0068] Connecting steel bars arranged in the vertical direction are welded on the supporting beam 11 .

[0069] Optionally, before connecting the supporting beam 11 to the next layer 200 of the cantilever structure 9 to be constructed, the following steps are further included:

[0070] When pouring the next 200-meter floor slab of the cantilever structure 9 to be constructed, the U-shaped anchor bolts 4 are pre-buried so that both ends of the U-shaped anchor bolts 4 are buried in the ground of the next 200-meter floor slab.

[0071] Optionally, before connecting the diagonal bracing rods 12 to the lower two layers 300 of the cantilever structure 9 to be constructed, the following steps are further included:

[0072] When pouring the lower two floors 300 of the cantilever structure 9 that needs to be constructed, the anchor bolts 5 are embedded in advance.

[0073] Optionally, in the process of building the support platform, the supporting beam 11, the diagonal support rod 12 and the vertical support rod 13 can be connected first, and then the first end of the supporting beam 11 can be extended into the U-shaped anchor bolt 4 of the next layer 200, and finally the attachment plate 6 on the first end of the diagonal support rod 12 can be fixedly connected to the anchor bolt 5 of the next two layers 300.

[0074] Optionally, before the scaffolding 2 is installed on the supporting beam 11, the following steps are further included:

[0075] A protective net is laid between the supporting beam 11 and the scaffold 2 to prevent construction objects or construction workers from falling from the scaffold 2 .

[0076] Optionally, before setting the cantilever formwork 8 on the scaffold 2, the following steps are further included:

[0077] A guardrail 7 is provided on the outside of the scaffold 2 to prevent construction workers from accidentally falling from the scaffold 2 .

[0078] Optionally, after the concrete strength of the cantilever structure 9 reaches a predetermined value, the cantilever structure support system can be dismantled in the order of cantilever formwork 8, guardrail 7, scaffolding 2, and support platform. The support platform can be dismantled as a whole, first by separating the diagonal braces 12 from the lower two-story 300 floor slab, and then by separating the supporting crossbeams 11 from the lower two-story 300 floor slab, so that it can be used again in subsequent construction, eliminating the need to reassemble the support platform.

[0079] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cantilever structure operation support system, comprising: A construction floor (100), a lower floor (200) and a lower second floor (300); the lower floor (200) is located at the bottom of the construction floor (100), and the lower second floor (300) is located at the bottom of the lower floor (200); It is characterized by further comprising: A supporting platform and a scaffold (2), wherein a cantilever formwork (8) is installed on the scaffold (2), and the top of the scaffold (2) is connected to a construction floor (100) where a cantilever structure (9) to be constructed is located; The support platform includes a support beam (11), which is arranged in a horizontal direction; a first end of the support beam (11) is connected to the next layer (200) of the cantilever structure (9) to be constructed, and the scaffold (2) is pressed against the support beam (11) from above; The scaffold (2) includes vertical poles (21); a plurality of positioning members (3) are provided on the supporting crossbeam (11), and the positioning members (3) are inserted into the bottom ends of the vertical poles (21) of the scaffold (2) in a one-to-one correspondence; An oblique brace (12), wherein a first end of the oblique brace (12) is connected to the lower two layers (300) of the cantilever structure (9) to be constructed, and a second end is fixedly connected to the second end of the supporting beam (11) for supporting the supporting beam (11); The vertical support rod (13) is arranged in the vertical direction; the upper end of the vertical support rod (13) is connected to the beam body of the supporting crossbeam (11), and the lower end is fixedly connected to the diagonal support rod (12).

2. A cantilever structure work support system according to claim 1, characterized in that: A U-shaped anchor bolt (4) is pre-buried on the floor of the next layer (200) of the cantilever structure (9) to be constructed, and both ends of the U-shaped anchor bolt (4) are pre-buried downward in the floor; the first end of the supporting beam (11) is passed through the U-shaped anchor bolt (4), and the U-shaped anchor bolt (4) is suitable for locking the first end of the supporting beam (11).

3. The cantilever structure work support system according to claim 1, characterized in that: Anchor bolts (5) are pre-buried at the outer ends of the floor slabs of the lower two floors (300) of the cantilever structure (9) to be constructed, and the bolt bodies of the anchor bolts (5) extend out of the lower two floors (300); an attachment plate (6) is provided on the first end of the diagonal brace (12), and a positioning hole is opened on the attachment plate (6); the anchor bolts (5) pass through the positioning hole of the attachment plate (6) and are fixedly connected by nuts.

4. The cantilever structure work support system according to claim 1, characterized in that: The positioning member (3) comprises connecting steel bars, which are welded on the supporting beam (11) in a vertical direction.

5. The cantilever structure work support system according to any one of claims 1 to 4, characterized in that: One or more groups of the supporting crossbeams (11), diagonal braces (12), and vertical braces (13) are made of I-shaped steel.

6. The cantilever structure work support system according to any one of claims 1 to 4, characterized in that: A protective net is laid between the supporting beam (11) and the scaffold (2).

7. A construction method for a cantilever structure support system according to any one of claim 6, characterized in that: The following steps are involved: Step 1, arranging multiple groups of positioning members (3) on the supporting beam (11); Step 2, connecting the supporting beam (11) to the next layer (200) of the cantilever structure (9) to be constructed; Step 3, connecting the diagonal bracing rods (12) to the lower two layers (300) and the supporting beams (11) of the cantilever structure (9) to be constructed; Step 4, connecting the vertical bracing rod (13) to the supporting beam (11) and the diagonal bracing rod (12) respectively; Step 5, installing the scaffold (2) on the supporting beam (11), so that the positioning member (3) is inserted into the bottom end of the scaffold (2); Step 6, connecting the scaffold (2) to the construction floor (100) where the cantilever structure (9) to be constructed is located; Step 7, setting the cantilever formwork (8) on the scaffold (2); Step 8: pouring concrete in the space enclosed by the cantilever formwork (8).

8. The construction method of a cantilever structure support system according to claim 7, characterized in that: In step 1, the operation of arranging the positioning member (3) on the supporting crossbeam (11) is as follows: welding connecting steel bars arranged in a vertical direction on the supporting crossbeam (11).

9. The construction method of a cantilever structure support system according to claim 7, characterized in that: In step 2, before connecting the supporting beam (11) to the next layer (200) of the cantilever structure (9) to be constructed, the following step is also included: when pouring the floor slab of the next layer (200) of the cantilever structure (9) to be constructed, pre-embedding U-shaped anchor bolts (4).

10. The construction method of a cantilever structure support system according to claim 7, characterized in that: In step 3, before connecting the diagonal bracing rod (12) to the lower two floors (300) of the cantilever structure (9) to be constructed, the method further includes the following steps: pre-embedding anchor bolts (5) when pouring the floor slabs of the lower two floors (300) of the cantilever structure (9) to be constructed.

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