Concrete cantilever structure and external facade construction method

Abstract

The invention relates to the technical field of building construction, in particular to a concrete cantilever structure and an external facade construction method. The frame beam is arranged on one side of the concrete column body; the cantilever beam is positioned at the upper end of the frame beam; the cantilever steel beam is fixedly mounted at the upper end of the frame beam through the pre-buried U-shaped bolt; after the cantilever structure formwork is removed, an original supporting system is converted into an outer protection frame, a scaffold is in lap joint, and the outer protection frame is used for constructing the outer vertical face building design content of the portion above the cantilever steel beam; and after the building design content of the outer facade of the part above the cantilever steel beam is constructed, the cantilever steel beam and the protection system above the cantilever steel beam are dismantled, and a construction hanging basket is installed on the cantilever steel beam layer. The foundation can serve as a concrete cantilever structure supporting system foundation, a reliable protection system is provided for concrete cantilever structure construction, the hanging basket arrangement difficulty is lowered, and the construction progress of the outer vertical face of the portion above the profile steel layer is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a concrete cantilever structure and a facade construction method. BACKGROUND

[0002] With the high-quality rapid development of cities, people's needs for high-grade and usability of buildings are increasing, and more and more buildings are designed with concrete cantilever plates or beams and other cantilever structures on roof trusses or other high floors.

[0003] In the prior art, a cantilever steel beam and a diagonal support frame are usually used for construction operation. However, during the construction of the diagonal support frame, it is difficult to erect the support frame in the structural construction, and it is not easy to set up a hanging basket for the facade construction, which brings certain difficulties to the structure and facade construction. SUMMARY

[0004] The purpose of the present application is to provide a concrete cantilever structure and a facade construction method to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical solution: a concrete cantilever structure, comprising: a concrete column;

[0006] A frame beam is arranged on one side of the concrete column;

[0007] A cantilever beam is located at the upper end of the frame beam and is fixedly connected to the upper end of the concrete column. A wall is built between the concrete column, the frame beam and the cantilever beam.

[0008] A facade construction method for a concrete cantilever structure, specifically comprising the following steps:

[0009] S1, a cantilever steel beam is fixedly installed at the upper end of the frame beam through a pre-buried U-shaped bolt. The outer end of the cantilever steel beam extends beyond the outer end of the frame beam, serving as a formwork support base during cantilever structure construction. A protective rod is fixedly installed outside the formwork support system, and the protective rod extends above the cantilever beam to form a reliable protection system;

[0010] S2, an upward pulling structure is arranged between the cantilever steel beam and the cantilever beam to reliably tie the protection system and the formwork support system;

[0011] S3, after the cantilever structure formwork is removed, the original support system is converted into an external protection frame, a scaffold is connected, and the external protection frame is used to construct the facade design content above the cantilever steel beam;

[0012] S4, after the construction of the facade design content above the cantilever steel beam is completed, the protective system above the cantilever steel beam is removed, a construction hanging basket is installed at the cantilever steel beam layer, and the pre-buried U-shaped bolt serves as a hanging point for the safety rope of the hanging basket.

[0013] Preferably, in step S1, when installing the cantilever steel beam, one end of the cantilever steel beam is processed to be inserted between a plurality of U-shaped bolts, the upper end of the U-shaped bolt is located above the cantilever steel beam, then a pressing plate is sleeved on the upper end of the U-shaped bolt, the lower end of the pressing plate is fixedly provided with an anti-skid pad, the upper end of the U-shaped bolt is screw-connected with a nut, and the anti-skid pad and the upper end of the cantilever steel beam are tightly contacted by screwing the nut.

[0014] Preferably, in step S1, after the guard rod is spliced, the lower end of the guard rod is fixed to the outer end of the cantilever steel beam, a connecting rod is fixedly installed on the upper end of the cantilever beam through pre-buried U-shaped bolts, and the upper end of the connecting rod is fixedly connected with the guard rod.

[0015] Preferably, in step 2, the upward pulling structure comprises two U-shaped sleeves and two connecting plates, the upper end of the U-shaped sleeve is fixedly provided with a screw rod, the U-shaped sleeve is sleeved on the outer side of the cantilever steel beam, a metal plate is sleeved on the upper end of the screw rod and screwed with a nut, the connecting plate two is fixedly installed on the lower end of the cantilever beam through pre-buried bolts, and the connecting plate two is located directly above the U-shaped sleeve.

[0016] Preferably, the upper end of the metal plate is fixedly provided with a connecting column one, the upper end of the connecting column one is fixedly provided with a connecting plate one, the lower end of the connecting plate two is fixedly provided with a connecting column two, the lower end of the connecting column two is fixedly provided with a fixing sleeve, a strip-shaped opening is formed in the lower end of the fixing sleeve, and a limiting groove is formed in the inner wall of the bottom end of the fixing sleeve.

[0017] Preferably, one side of the fixing sleeve is provided with a first fixing rod and a second fixing rod, a plurality of teeth are fixedly installed on one side of the first fixing rod and the second fixing rod, the teeth on the outer walls of the first fixing rod and the second fixing rod are engaged with each other, and the first fixing rod and the second fixing rod are fixed through a fixing frame.

[0018] Preferably, the upper end of the first fixing rod is fixedly provided with a connecting plate three, when the first fixing rod is inserted into the strip-shaped opening, the connecting plate three is inserted into the fixing sleeve and located in the limiting groove, the lower end of the second fixing rod is fixedly provided with a threaded cylinder one, a threaded cylinder two is arranged below the threaded cylinder one, the lower end of the threaded cylinder two is fixedly provided with a connecting plate four, and the connecting plate four is fixedly connected with the connecting plate one through bolts.

[0019] Preferably, a threaded rod is screw-connected between the threaded cylinder one and the threaded cylinder two, the threads at the upper and lower ends of the threaded rod are symmetrically arranged, and a driving block is fixedly installed on the middle part of the threaded rod.

[0020] Preferably, in step 3, the scaffold is fixedly connected with the wall body and the guard rod.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] The present application is characterized in that a cantilever steel beam is fixedly installed at the upper end of the frame beam through the pre-buried U-shaped bolt, as a formwork support base during the construction of the cantilever structure, and a protective rod is fixedly installed outside the formwork support system; an upward pulling structure is arranged between the cantilever steel beam and the cantilever beam to reliably pull the protective system and the formwork support system; after the formwork of the cantilever structure is removed, the original support system is converted into an outer protective frame, and a scaffold is lapped, and the outer facade building design content above the cantilever steel beam is constructed by means of the outer protective frame; after the construction of the outer facade building design content above the cantilever steel beam is completed, the protective system above the cantilever steel beam is removed, a construction basket is installed at the cantilever steel beam layer, and the original pre-buried U-shaped bolt is used as a hanging point of the safety rope of the basket, so that the installation of the basket is facilitated. The present application can be used as the support system base of the concrete cantilever structure, and can provide a reliable protective system for the construction of the concrete cantilever structure, reduce the difficulty of setting the basket, and accelerate the construction progress of the outer facade above the steel layer. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the front structure of the whole structure of the present application;

[0024] Figure 2 It is a schematic view of the front structure of the whole structure of the present application;

[0025] Figure 3 It is a schematic view of the front structure of the whole structure of the present application; Figure 2 It is an enlarged view of the A area structure in the present application;

[0026] Figure 4 It is an enlarged view of the B area structure in the present application; Figure 2 It is an enlarged view of the B area structure in the present application;

[0027] Figure 5 It is a three-dimensional schematic view of the upward pulling component structure of the present application;

[0028] Figure 6 It is a three-dimensional schematic view of the upward pulling component structure of the present application;

[0029] Figure 7 It is a three-dimensional schematic view of the upward pulling component structure of the present application;

[0030] Figure 8 It is a three-dimensional schematic view of the upward pulling component structure of the present application;

[0031] In the figure: 1, concrete column; 2, frame beam; 3, cantilever beam; 4, wall; 5, cantilever steel beam; 6, U-shaped bolt; 7, pressing plate; 8, non-slip pad; 9, U-shaped sleeve; 10, screw rod; 11, connecting column I; 12, connecting plate I; 13, connecting plate II; 14, connecting column II; 15, fixing sleeve; 16, limiting groove; 17, strip-shaped opening; 18, fixed rod I; 19, connecting plate III; 20, fixed rod II; 21, tooth; 22, threaded cylinder I; 23, threaded cylinder II; 24, connecting plate IV; 25, threaded rod; 26, driving block; 27, fixed frame; 28, connecting rod; 29, protective rod; 30, scaffold; 31, metal plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all the embodiments, and are only used to explain the embodiments of the present application, and do not limit the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] Please refer to Figures 1 to 8 The present application provides a technical scheme: a concrete cantilever structure, comprising: a concrete column 1;

[0034] A frame beam 2 is arranged on one side of the concrete column 1;

[0035] A cantilever beam 3 is located at the upper end of the frame beam 2 and is fixedly connected with the upper end of the concrete column 1, and a wall 4 is built between the concrete column 1, the frame beam 2 and the cantilever beam 3.

[0036] A facade construction method of a concrete cantilever structure, specifically comprising the following steps:

[0037] S1, a cantilever steel beam 5 is fixedly installed at the upper end of the frame beam 2 through the pre-buried U-shaped bolt 6, the outer end of the cantilever steel beam 5 extends out of the outer end of the frame beam 2, serving as a formwork support foundation during cantilever structure construction, and a protective rod 29 is fixedly installed outside the formwork support system, the protective rod 29 extends above the cantilever beam 3 to form a reliable protection system;

[0038] S2, an upward pulling structure is arranged between the cantilever steel beam 5 and the cantilever beam 3 to reliably tie the protection system and the formwork support system;

[0039] S3, after the cantilever structure template is removed, the original support system is converted into an outer protection frame, and a scaffold 30 is lapped, the scaffold 30 and the wall 4, the frame beam 2 and the protection rod 29 are fixedly connected, and the outer facade architectural design content above the cantilever steel beam 5 is constructed by means of the outer protection frame;

[0040] S4, after the outer facade architectural design content above the cantilever steel beam 5 is constructed, the protection system above the cantilever steel beam 5 is removed, a construction basket is installed at the cantilever steel beam 5 layer, the original embedded U-shaped bolt 6 is used as a hanging point of the safety rope of the basket, and the installation of the basket is facilitated;

[0041] In step S1, when the cantilever steel beam 5 is installed, one end of the cantilever steel beam 5 is inserted between a plurality of U-shaped bolts 6, the upper end of the U-shaped bolt 6 is located above the cantilever steel beam 5, then a pressing plate 7 is sleeved at the upper end of the U-shaped bolt 6, the lower end of the pressing plate 7 is fixedly installed with an anti-skid pad 8, the upper end of the U-shaped bolt 6 is screwed with a nut, the anti-skid pad 8 and the upper end of the cantilever steel beam 5 are tightly contacted by screwing the nut, the cantilever steel beam 5 is firmly fixed at the upper end of the frame beam 2, then the protection rod 29 is spliced, the lower end of the protection rod 29 is fixed at the outer end of the cantilever steel beam 5, the connecting rod 28 is fixedly installed at the upper end of the cantilever beam 3 through the embedded U-shaped bolt 6, the upper end of the connecting rod 28 and the protection rod 29 are fixedly connected, so that the protection rod 29 is fixed, and the outer side of the cantilever steel beam 5 is protected.

[0042] In step 2, the upward pulling structure includes a U-shaped sleeve 9 and a connecting plate two 13, a screw rod 10 is fixedly installed at the upper end of the U-shaped sleeve 9, the U-shaped sleeve 9 is sleeved on the outer side of the cantilever steel beam 5, then a metal plate 31 is sleeved at the upper end of the screw rod 10 and screwed with a nut, the lower end of the metal plate 31 is also fixedly installed with an anti-skid pad 8, the anti-skid pad 8 at the lower end of the metal plate 31 is tightly contacted with the upper end of the cantilever steel beam 5 by screwing the nut, so that the metal plate 31 and the U-shaped sleeve 9 are fixed on the outer wall of the cantilever steel beam 5, the upper end of the metal plate 31 is fixedly installed with a connecting column one 11, and the upper end of the connecting column one 11 is fixedly installed with a connecting plate one 12.

[0043] The connecting plate two 13 is fixed at the lower end of the cantilever beam 3 through the embedded bolt, and the connecting plate two 13 is located directly above the U-shaped sleeve 9, the lower end of the connecting plate two 13 is fixedly installed with the connecting column two 14, the lower end of the connecting column two 14 is fixedly installed with the fixed sleeve 15, the lower end of the fixed sleeve 15 is provided with a strip-shaped port 17, the inner wall of the bottom end of the fixed sleeve 15 is provided with a limiting groove 16, one side of the fixed sleeve 15 is provided with a fixed rod one 18 and a fixed rod two 20, a plurality of teeth 21 are fixedly installed on one side of the fixed rod one 18 and the fixed rod two 20, the teeth 21 on the outer walls of the fixed rod one 18 and the fixed rod two 20 are engaged with each other and fixed through the fixed frame 27, the fixed frame 27 is two U-shaped metal frames, the two metal frames are sleeved on the outer sides of the fixed rod one 18 and the fixed rod two 20 respectively and fixed through the bolts, so that the fixed rod one 18 and the fixed rod two 20 are fixed together, the teeth 21 are engaged with each other, and the connection length between the fixed rod one 18 and the fixed rod two 20 is conveniently adjusted.

[0044] The upper end of the fixed rod one 18 is fixedly installed with a connecting plate three 19, when the fixed rod one 18 is inserted into the strip-shaped port 17, the connecting plate three 19 is inserted into the fixed sleeve 15 and located in the limiting groove 16, the lower end of the fixed rod two 20 is fixedly installed with a threaded cylinder one 22, a threaded cylinder two 23 is arranged below the threaded cylinder one 22, the lower end of the threaded cylinder two 23 is fixedly installed with a connecting plate four 24, the connecting plate four 24 is fixedly connected with the connecting plate one 12 through the bolt, the threaded cylinder one 22 and the threaded cylinder two 23 are threadedly connected with a threaded rod 25, the upper and lower ends of the threaded rod 25 are respectively threadedly connected with the inner walls of the threaded cylinder one 22 and the threaded cylinder two 23, the threads at the upper and lower ends of the threaded rod 25 are symmetrically arranged, a driving block 26 is fixedly installed in the middle part of the threaded rod 25, the driving block 26 is in the shape of an equilateral hexagon, so as to be connected with a hexagonal wrench, thereby driving the threaded rod 25 to rotate.

[0045] The height between the cantilever beam 3 and the frame beam 2 is measured, then the lengths of the fixed rod one 18 and the fixed rod two 20 are adjusted and fixed, then the connecting plate three 19 is inserted into the fixed sleeve 15 and located in the limiting groove 16, then the distance between the threaded cylinder one 22 and the threaded cylinder two 23 is sleeved with the threaded rod 25, so that the connecting plate four 24 approaches the upper end of the connecting plate one 12, finally the connecting plate one 12 and the connecting plate four 24 are fixed through the bolt, so that the installation of the upper pulling component is completed, and the cantilever steel beam 5 and the formwork structure are more stable.

[0046] When the device works, the cantilever steel beam 5 is fixedly installed at the upper end of the frame beam 2 through the pre-buried U-shaped bolt 6, the outer end of the cantilever steel beam 5 extends out of the outer end of the frame beam 2, and serves as a formwork support base during the construction of the cantilever structure; the protection rod 29 is fixedly installed outside the formwork support system, extends above the cantilever beam 3 to form a reliable protection system; the upper pulling structure is arranged between the cantilever steel beam 5 and the cantilever beam 3 to reliably pull the protection system and the formwork support system; after the formwork of the cantilever structure is removed, the original support system is converted into an outer protection frame, and the scaffold 30 is overlapped; the scaffold 30 is fixedly connected with the wall body 4, the frame beam 2 and the protection rod 29, and the outer facade architectural design content above the cantilever steel beam 5 is constructed by means of the outer protection frame; after the construction of the outer facade architectural design content above the cantilever steel beam 5 is completed, the protection system above the cantilever steel beam 5 is removed, the construction hoist basket is installed at the cantilever steel beam 5 layer, and the pre-buried U-shaped bolt 6 serves as a hanging point of the hoist basket safety rope, so as to facilitate the installation of the hoist basket.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A concrete overhang structure characterized by: The utility model relates to a concrete column (1) and frame beam (2) are arranged in one side of concrete column (1), and overhanging beam (3) is located in the upper end of frame beam (2) and is fixedly connected with the upper end of concrete column (1), and wall (4) is built between concrete column (1), frame beam (2), overhanging beam (3). Specifically comprising the following steps: S1, the upper end of frame beam (2) is fixedly installed with overhanging steel beam (5) through preburied U type bolt (6), the outer end of overhanging steel beam (5) extends the outer end of frame beam (2) and is used as the formwork support base during the construction of overhanging structure, and protective pole (29) is fixedly installed outside the formwork support system and extends to overhanging beam (3) to form reliable protection system, S2, the upper pull structure is arranged between overhanging steel beam (5) and overhanging beam (3), and reliable pull connection is formed to the protection system and formwork support system, 2. A method of constructing an exterior facade with a concrete overhang as claimed in claim 1, characterized in that: S3, after the formwork of overhanging structure is removed, the original support system is converted into external protection frame, and scaffold (30) is overlapped, and the external facade architectural design content above overhanging steel beam is constructed by means of external protection frame, S4, after the external facade architectural design content above overhanging steel beam (5) is constructed, the protection system above overhanging steel beam (5) is removed, and construction hoist basket is installed at overhanging steel beam (5) layer, and the preburied U type bolt (6) is used as the hanging point of hoist basket safety rope, In step S1, when installing overhanging steel beam (5), the one end of overhanging steel beam (5) is inserted between several U type bolts (6), the upper end of U type bolt (6) is located above overhanging steel beam (5), then the upper end of U type bolt (6) is sleeved with pressing plate (7), the lower end of pressing plate (7) is fixedly installed with antiskid pad (8), the upper end of U type bolt (6) is screw-connected with nut, and antiskid pad (8) is in close contact with the upper end of overhanging steel beam (5) by screwing the nut. In step S1, after protective pole (29) is spliced, the lower end thereof is fixed on the outer end of overhanging steel beam (5), and connecting rod (28) is fixedly installed on the upper end of overhanging beam (3) through preburied U type bolt (6), and the upper end of connecting rod (28) is fixedly connected with protective pole (29). In step 2, the upper pull structure includes U type sleeve (9) and connecting plate two (13), the upper end of U type sleeve (9) is fixedly installed with screw rod (10), U type sleeve (9) is sleeved on the outer side of overhanging steel beam (5), then metal plate (31) is sleeved on the upper end of screw rod (10) and is screwed with nut, and connecting plate two (13) is fixedly installed on the lower end of overhanging beam (3) through preburied bolt, and connecting plate two (13) is located directly above U type sleeve (9).

3. A cantilevered concrete structure according to claim 2, wherein: The upper end of metal plate (31) is fixedly installed with connecting column one (11), the upper end of connecting column one (11) is fixedly installed with connecting plate one (12), the lower end of connecting plate two (13) is fixedly installed with connecting column two (14), the lower end of connecting column two (14) is fixedly installed with fixed sleeve (15), strip-shaped opening (17) is formed in the lower end of fixed sleeve (15), and limit slot (16) is formed in the bottom end inner wall of fixed sleeve (15).

4. A cantilevered concrete structure as claimed in claim 2, wherein: ​ 5. A cantilevered concrete structure as claimed in claim 2, wherein: ​ 6. A cantilevered concrete structure according to claim 5, wherein: ​ 7. The method of constructing an exterior facade with a cantilevered concrete structure according to claim 6, wherein: One side of the fixed sleeve (15) is provided with a fixed rod one (18) and a fixed rod two (20), one side of the fixed rod one (18) and the fixed rod two (20) is fixedly installed with several teeth (21), the teeth on the outer wall of the fixed rod one (18) and the fixed rod two (20) are engaged with each other, and are fixed through the fixed frame (27).

8. The method of constructing an exterior facade with a cantilevered concrete structure according to claim 7, wherein: The upper end of the fixed rod one (18) is fixedly installed with a connecting plate three (19), when the fixed rod one (18) is inserted into the strip-shaped port (17), the connecting plate three (19) is inserted into the fixed sleeve (15) and located in the limiting groove (16), the lower end of the fixed rod two (20) is fixedly installed with a threaded cylinder one (22), the lower side of the threaded cylinder one (22) is provided with a threaded cylinder two (23), the lower end of the threaded cylinder two (23) is fixedly installed with a connecting plate four (24), the connecting plate four (24) is fixedly connected with the connecting plate one (12) through bolts.

9. The method of constructing an exterior facade with a cantilevered concrete structure according to claim 8, wherein: The threaded cylinder one (22) and the threaded cylinder two (23) are screw-connected with a threaded rod (25), the threads on the upper and lower ends of the threaded rod (25) are symmetrically arranged, and the middle part of the threaded rod (25) is fixedly installed with a driving block (26).

10. The method of constructing an exterior facade with a cantilevered concrete structure according to claim 2, wherein: In step 3, the scaffold (30) is fixedly connected with the wall body (4), the frame beam (2) and the protection rod (29).

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