Cantilever bent frame supporting and protecting structure

Abstract

The utility model relates to a cantilever bent frame supporting and protecting structure which comprises a cantilever main beam, a bent frame and a scaffold, one end of the cantilever main beam is anchored on a large roof floor through an annular bolt, the length of the anchoring end is larger than 1.25 times of the cantilever length, and when the cantilever length is larger than 1.8 m, the cantilever end of the cantilever main beam is provided with an inclined strut; the bent frame is fixed above the cantilever main beam; and the scaffold is arranged on the bent frame. According to the utility model, the installation problem of the bent frame supporting system of the out-of-roof structure is solved, and the safety of the bent frame supporting system in the area can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to a cantilevered rack supporting protection structure. Background Art

[0002] With the rapid development of modern construction industry, urban high-rise buildings have become the main buildings, so it is necessary to set up scaffolding to assist construction. Among the existing scaffolding construction methods, there are full-floor scaffolding, large steel pipe scaffolding and cantilever scaffolding. Full-floor scaffolding refers to setting up a full-floor scaffolding at the designed location, using a tower crane to transfer materials to the scaffolding, and drilling, steel bars and formwork construction on the scaffolding; large steel pipe scaffolding refers to first processing the foundation, installing large steel pipe racks section by section and setting up a construction platform, and drilling, steel bars and formwork construction on the top platform of the steel pipe rack; cantilever scaffolding refers to installing an I-beam cantilever scaffold at the top foundation, and setting up a scaffolding on the top of the cantilever scaffold. Steel cantilever scaffolding is one of the main types of scaffolding, and with the continuous promotion of the concept of green construction and the increasing importance of green construction technology, the demand for green construction technology of steel cantilever scaffolding is increasing.

[0003] However, for roof structures, such as a small roof extending from a large roof structure, how to ensure the safety of the cantilevered frame support system has always been a technical focus of continuous concern for technical personnel in this field. Utility Model Content

[0004] The utility model provides a cantilever rack support protection structure to solve the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides a cantilever frame supporting and protecting structure, including a cantilever main beam, a frame and a scaffolding, one end of the cantilever main beam is anchored on the large roof floor with an annular bolt, and the length of the anchoring end is greater than 1.25 times the cantilever length. When the cantilever length is greater than 1.8 meters, the cantilever end of the cantilever main beam is provided with a diagonal brace; the frame is fixed above the cantilever main beam; and the scaffolding is installed on the frame.

[0006] Preferably, a filling square timber is provided in the gap between the annular bolt and the cantilever main beam.

[0007] Preferably, an additional steel bar is provided at the inner bottom of the annular bolt.

[0008] Preferably, the top of the diagonal brace is connected to the cantilever main beam by assembly and welding, and the bottom is connected to the wall through a corbel.

[0009] Preferably, for the position where the cantilevered main beam cannot be fixed on the large roof slab, the cantilevered main beam is connected to the structural beam by through bolts.

[0010] Preferably, the erection height of the bent frame is ≤4.3m, the spacing is 0.9m×0.9m, and the step distance is 1.8m; the beam width of the bent frame is ≥250mm or the beam height is ≥500mm.

[0011] Preferably, at least one column is added to the bottom of the beam of the rack.

[0012] Compared with the prior art, the cantilevered frame support protection structure provided by the utility model solves the installation problem of the frame support system of the roof structure, and can ensure the safety of the frame support system in this area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a cantilevered rack supporting a protective structure in a specific implementation manner of the utility model;

[0014] Figure 2 This is a structural schematic diagram of a cantilevered rack supporting a protective structure in a specific embodiment of the utility model (excluding scaffolding);

[0015] Figure 3a and 3b They are respectively schematic diagrams of installation of two types of annular bolts in specific implementation modes of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation of the diagonal brace and the cantilevered main beam in a specific implementation manner of the utility model;

[0017] Figure 5 This is a schematic diagram of the installation of the diagonal brace and the wall in a specific implementation manner of the utility model;

[0018] Figure 6 It is a schematic diagram of the connection between the cantilevered main beam and the structural beam in a specific implementation manner of the utility model.

[0019] In the figure: 100-cantilever main beam, 110-ring bolts, 111-filling square timber, 112-additional steel bars, 120-diagonal bracing, 121-angle steel, 122-corbel, 123-first pair of through bolts, 131-second pair of through bolts, 132-expansion bolts, 200-rack, 300-scaffolding. DETAILED DESCRIPTION

[0020] In order to describe the technical solution of the above utility model in more detail, specific embodiments are listed below to demonstrate the technical effect; it should be emphasized that these embodiments are used to illustrate the utility model but not to limit the scope of the utility model.

[0021] The utility model provides a cantilever rack support protection structure, such as Figure 1 and Figure 2As shown, it includes a cantilevered main beam 100, a bent frame 200 and a scaffolding 300. One end of the cantilevered main beam 100 is anchored on the large roof slab with a ring bolt 110. The length of the anchoring end is greater than 1.25 times the cantilever length. When the cantilever length is greater than 1.8 meters, the cantilevered end of the cantilevered main beam 100 is provided with a diagonal brace 120. The cantilevered main beam 100 can be made of 18# I-beam, and the diagonal brace 120 can be made of 12# I-beam; the bent frame 200 is fixed above the cantilevered main beam 100; the scaffolding 300 is installed on the bent frame 200. The scaffolding 300 outside the bent frame 200 is also cantilevered, and its main beam is fixed on the lower floor. The present invention solves the installation problem of the bent frame support system of the roof structure, and can ensure the safety of the bent frame support system in this area.

[0022] In some embodiments, the erection height of the bent frame 200 is ≤4.3m, the spacing is 0.9m×0.9m, and the step distance is 1.8m; the beam width of the bent frame 200 is ≥250mm or the beam height is ≥500mm to ensure construction safety. In some embodiments, at least one column is added to the bottom of the beam of the bent frame 200.

[0023] In some embodiments, please refer to Figure 3a and 3b As shown, the annular bolt 110 mainly has two forms, one of which is open upwards, such as Figure 3a As shown, the top is fixed with a nut; the other is with the opening facing downwards, as shown Figure 3b As shown, the two side walls extend transversely at the bottom and fold back to increase the bearing capacity of the annular bolt 110. A filling square wood 111 is provided in the gap between the annular bolt 110 and the cantilever main beam 100 to prevent the cantilever main beam 100 from shaking in the annular bolt 110. In some embodiments, an additional steel bar 112 is provided at the inner bottom of the annular bolt 110 to further ensure that the cantilever main beam 100 is firmly connected.

[0024] In some embodiments, the top of the diagonal brace 120 is connected to the cantilever main beam 100 by assembly welding. Figure 4 As shown, the bottom of the cantilever main beam 100 is welded with an angle steel 121, and the top of the diagonal brace 120 is joined and welded to the angle steel 121 and the cantilever main beam 100. In some embodiments, the welding rod can be an E43 welding rod, which is suitable for welding positions such as overhead, horizontal, and horizontal. The bottom of the diagonal brace 120 is connected to the wall through a corbel 122. Please refer to Figure 5 The bottom of the diagonal brace 120 is welded and fixed to the corbel 122, and the corbel 122 is fixedly connected to the wall through a first pair of through bolts 123. The diagonal brace 120 can ensure the safety of the cantilever when the cantilever length is long.

[0025] In some embodiments, please refer to Figure 6 For the position where the cantilever main beam 100 cannot be fixed on the large roof floor, one end of the cantilever main beam 100 is fixed to the wall by an expansion bolt 132, and the longitudinal vertical pole above the cantilever main beam 100 can be connected to the structural beam by a through bolt (to facilitate the distinction from the first through bolt 123, the through bolt is named as the second through bolt 131), so as to realize the cantilever setting and safe fixation of the cantilever main beam 100.

[0026] The cantilevered frame support protection structure provided by the utility model can be constructed by the following steps: pre-embedded roof placement (or tower crane cooperation) I-beams, installation of diagonal braces 120 connected to the lower reinforced concrete beams, erection of the frame 200, and erection of the scaffolding 300 formwork.

[0027] The erection order of the rack 200 can be: place the sweeping rod; erect the vertical rods one by one and then fasten them with the sweeping rod; install the sweeping crossbar and fasten the vertical rods or the sweeping crossbar; install the first large crossbar (fasten them with each vertical rod); install the first small crossbar; install the second large crossbar; install the second small crossbar; add temporary diagonal braces.

[0028] In addition, the subsequent curtain wall keel adapters are combined and connected with the embedded parts of the cantilever system to ensure continuous construction of the facade structure system.

[0029] In summary, the cantilevered frame support protection structure provided by the utility model includes a cantilevered main beam 100, a frame 200 and a scaffold 300. One end of the cantilevered main beam 100 is anchored on the large roof slab by a ring bolt 110, and the length of the anchoring end is greater than 1.25 times the cantilever length. When the cantilever length is greater than 1.8 meters, the cantilevered end of the cantilevered main beam 100 is provided with a diagonal brace 120; the frame 200 is fixed above the cantilevered main beam 100; and the scaffold 300 is installed on the frame 200. The present invention solves the installation problem of the frame support system of the roof structure and can ensure the safety of the frame support system in this area.

[0030] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A cantilevered frame support protection structure, characterized in that: It includes a cantilevered main beam, a frame and a scaffolding. One end of the cantilevered main beam is anchored on the large roof floor with a ring bolt, and the length of the anchoring end is greater than 1.25 times the cantilever length. When the cantilever length is greater than 1.8 meters, the cantilevered end of the cantilevered main beam is provided with a diagonal brace; the frame is fixed above the cantilevered main beam; and the scaffolding is installed on the frame.

2. The cantilevered rack support and protection structure according to claim 1, characterized in that: A filling square wood is arranged in the gap between the annular bolt and the cantilever main beam.

3. The cantilevered rack support and protection structure according to claim 1 or 2, characterized in that: The inner bottom of the ring bolt is provided with additional reinforcement.

4. The cantilevered rack support and protection structure according to claim 1, characterized in that: The top of the diagonal brace is connected to the cantilever main beam by assembly and welding, and the bottom is connected to the wall through a corbel.

5. The cantilevered rack support and protection structure according to claim 1, characterized in that: As the cantilevered main beam cannot be fixed at the position of the large roof slab, the cantilevered main beam is connected to the structural beam by through bolts.

6. The cantilevered rack support and protection structure according to claim 1, characterized in that: The erection height of the frame is ≤4.3m, the spacing is 0.9m×0.9m, and the step distance is 1.8m; the beam width of the frame is ≥250mm or the beam height is ≥500mm.

7. The cantilevered rack support and protection structure according to claim 6, characterized in that: At least one column is added to the bottom of the beam of the frame.

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