Multi-floor narrow space cantilever and construction method

Abstract

The application belongs to the technical field of building construction, and particularly relates to a multi-floor narrow-space cantilever and a construction method, which comprises a construction floor and a construction platform mechanism; a fence is arranged on the top of the construction floor and close to the edge, the outer wall of the fence is horizontally connected with a plurality of groups of I-shaped steel, and one end of each of the plurality of groups of I-shaped steel is in threaded fastening connection with the top of the construction floor; a construction worker pours and grouts the reinforcing frame strip on one side of the floor horizontal beam, and a cantilever is formed after solidification; the I-shaped steel on different construction floors is hoisted through the construction platform mechanism, so that the pouring and forming of the cantilever outside the construction floor in the multi-floor narrow space can be satisfied, and the problem of narrow area and difficult construction is solved. Moreover, the platform construction platform is erected on the basis of the next layer which has been constructed, so that the construction structure is more stable, the safety is good, the platform construction platform does not need to be erected all the time, the steel pipes and parts required are less, and the turnover is convenient.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a cantilever structure and construction method for a multi-story narrow space. Background Technology

[0002] The current requirements for concrete cantilever construction technology and design drawings regarding hanging baskets are comprehensively compared in terms of the characteristics, weight, type of steel used, and construction technology of various types of hanging baskets. The design principles of hanging baskets are: light weight, simple structure, sturdy and stable, easy to move forward and disassemble, strong reusability, small deformation after being stressed, and sufficient space under the hanging basket to facilitate the construction of steel reinforcement and formwork.

[0003] A search revealed that Chinese Patent Publication No. CN215441503U, authorized on January 7, 2022, discloses a bridge hanging basket cantilever construction device, comprising a hanging basket body and a base plate. The hanging basket body has symmetrically symmetrically opened slots at its rear end, and insert plates are symmetrically installed at the front end of the base plate. Through holes are symmetrically opened within the insert plates. Four slots are symmetrically opened on the upper left and right sides of the base plate. A hidden groove is opened at the outer end of the inner wall of each slot, and a locking block is installed within the slot. A pull rod is installed at the outer end of each locking block, and the pull rod passes through the hidden groove. A spring is sleeved on the outer surface of the pull rod, and the spring is located within the hidden groove. Longitudinal rods are symmetrically installed on the upper left and right sides of the base plate. This design facilitates disassembly and installation, adds a protective mechanism, and effectively protects worker safety, improving overall safety.

[0004] However, the equipment still has the following drawbacks: although it can effectively protect the safety of workers and improve safety, the cantilever construction device is large in size and cannot be operated in a narrow space, which is not conducive to the turnover of parts during the cantilever construction process. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a cantilever structure for multi-story narrow spaces, comprising a construction floor and a construction platform mechanism. A fence is installed at the top and near the edge of the construction floor. Several sets of I-beams are horizontally connected through the outer wall of the fence, and one end of each set of I-beams is threadedly fastened to the top of the construction floor. The construction platform mechanism is movably engaged with the other end of the I-beams. Several sets of horizontal floor beams are embedded at the bottom of the construction floor, and steel reinforcement frames are embedded within these horizontal beams, extending to both sides of the construction platform mechanism.

[0006] Furthermore, the construction platform mechanism includes a platform protective frame; the platform protective frame is an open rectangular structure, and a load-bearing platform is horizontally arranged at the bottom of the inner wall of the platform protective frame.

[0007] Furthermore, an inspection port is provided at the corner of the support platform, and a ladder is provided on the top of the support platform and on the side near the inspection port. The other end of the ladder extends at an incline to the inner wall of the platform's protective frame.

[0008] Furthermore, both sides of the platform protective frame are equipped with horizontal guide rails, and the two sets of guide rails are symmetrically arranged with the central axis of the platform protective frame as the center. Both sets of guide rails are slidably connected with casting limiting vertical plates, and casting limiting horizontal plates are provided at the bottom of the casting limiting vertical plates.

[0009] Furthermore, the horizontal and vertical pouring limiting plates are spliced ​​together to form a U-shaped structure, and the horizontal and vertical pouring limiting plates are sleeved on the outside of the reinforcing bar frame.

[0010] Furthermore, the outer wall of the platform protective frame is fixedly connected with two sets of I-beam seats, and both sets of I-beam seats are movably snapped onto the ends of the I-beams.

[0011] Furthermore, a sealing plate is fixedly connected to one end of the inner wall of the casting limiting vertical plate and the casting limiting horizontal plate, and the surface of the sealing plate is provided with several sets of through holes for penetrating the ends of the reinforcing bar frame.

[0012] Furthermore, the inner walls of the casting limiting vertical plate, the casting limiting horizontal plate, and the sealing plate form a casting limiting cavity.

[0013] A construction method for cantilevered structures in confined, multi-story spaces includes the following steps:

[0014] One end of the I-beam extends to the outside of the construction floor for hoisting the construction platform mechanism, so that the construction platform mechanism fits against the outside of the construction floor.

[0015] The construction platform structure is stabilized by fastening the other end of the I-beam to the top of the construction floor with threads.

[0016] The construction platform mechanism is used for standing construction workers to pour the steel reinforcement frame on one side of the floor horizontal beam, and after curing, it forms a cantilever.

[0017] By hoisting the I-beams on different construction floors using a construction platform mechanism, the external cantilever of the construction floor can be cast and formed in a narrow space with multiple floors.

[0018] The beneficial effects of this invention are:

[0019] 1. One end of an I-beam extends to the exterior of the construction floor for hoisting the construction platform mechanism. The platform mechanism is then fitted against the exterior of the construction floor. The other end of the I-beam is threaded and fastened to the top of the construction floor, ensuring the platform mechanism is stable. The platform mechanism allows construction workers to stand and pour the reinforcing steel frame along one side of the floor's horizontal beam. After curing, a cantilever is formed. The platform mechanism, hoisted from I-beams on different construction floors, can meet the requirements for pouring and forming the external cantilever of construction floors in confined spaces across multiple floors, solving the problem of difficult construction in narrow areas. Furthermore, erecting the platform on top of the already completed floor makes the construction structure more stable and safer. The platform does not need to be continuously erected upwards, requiring fewer steel pipes and components, and is easy to relocate.

[0020] 2. The I-beam base is used to quickly snap onto the end of the I-beam on each construction floor. After the cantilever on each construction floor is poured, the I-beam base can be manually disassembled by the construction personnel to separate it from the I-beam, making it easy to hoist the platform protection frame to the upper or lower floor.

[0021] 3. The support platform allows construction workers to stand on top and pull the pouring limit vertical plates on both sides, so that the inner walls of the pouring limit vertical plates, pouring limit horizontal plates and sealing plates form a pouring limit cavity, which slides and fits onto the outside of the steel reinforcement frame on both sides. The other end of the pouring limit cavity is spliced ​​with the end of the floor horizontal beam to form a closed pouring space, which is used for the pouring and forming of multiple cantilever sections on the same floor, thus improving the quality of cantilever pouring.

[0022] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the connection between the cantilever and the construction platform mechanism according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the structure of a multi-story cantilever in a narrow space according to an embodiment of the present invention is shown;

[0026] Figure 3A schematic diagram of the construction platform mechanism according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic diagram of the construction of the multi-construction platform mechanism according to an embodiment of the present invention is shown;

[0028] Figure 5 A schematic diagram of the construction of a single construction platform mechanism according to an embodiment of the present invention is shown.

[0029] In the diagram: 1. Construction floor; 2. I-beam; 3. Construction platform structure; 31. Platform protective frame; 32. Load-bearing platform; 33. Inspection port; 34. Ladder; 35. Guide rail; 36. Pouring limit vertical plate; 37. Pouring limit horizontal plate; 38. I-beam base; 39. Sealing plate; 4. Floor horizontal beam; 5. Reinforcing steel frame. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] This invention provides a cantilever structure for multi-story narrow spaces, including a construction floor 1 and a construction platform mechanism 3; for example, such as... Figure 1 and Figure 2 As shown.

[0032] A fence is installed at the top and near the edge of the construction floor 1. Several sets of I-beams 2 are horizontally connected through the outer wall of the fence, and one end of each set of I-beams 2 is threadedly fastened to the top of the construction floor 1. The construction platform mechanism 3 is movably engaged with the other end of the I-beams 2, and one side wall of the construction platform mechanism 3 is movably fitted to the construction floor 1. Several sets of floor horizontal beams 4 are embedded in the bottom of the construction floor 1, and the several sets of floor horizontal beams 4 are vertically set at the bottom of the I-beams 2. Reinforcing steel frames 5 are embedded in the floor horizontal beams 4, and the reinforcing steel frames 5 extend to both sides of the construction platform mechanism 3.

[0033] Specifically, one end of the I-beam 2 extends to the outside of the construction floor 1 for hoisting the construction platform mechanism 3, so that the construction platform mechanism 3 fits against the outside of the construction floor 1, while the other end of the I-beam 2 is threadedly fastened to the top of the construction floor 1, so that the construction platform mechanism 3 is in a stable state. The construction platform mechanism 3 is used for construction workers to stand on to pour the steel frame 5 on one side of the floor horizontal beam 4, and after curing, it forms a cantilever.

[0034] The construction platform mechanism 3 is hoisted to the I-beams 2 on different construction floors 1, which can meet the casting and forming of the external cantilever of the construction floor 1 in a narrow space with multiple floors.

[0035] The construction platform mechanism 3 includes a platform protective frame 31; for example, such as... Figure 3 As shown.

[0036] The platform protective frame 31 is an open rectangular structure, and a bearing platform 32 is horizontally arranged at the bottom of the inner wall of the platform protective frame 31. An inspection port 33 is provided at the corner of the bearing platform 32. A ladder 34 is provided on the top of the bearing platform 32 and on the side near the inspection port 33. The other end of the ladder 34 extends obliquely to the inner wall of the platform protective frame 31. Guide rails 35 are horizontally arranged on both side walls of the platform protective frame 31, and the two sets of guide rails 35 are symmetrically arranged with the central axis of the platform protective frame 31 as the center. A casting limiting vertical plate 36 is slidably connected to each set of guide rails 35, and a casting limiting vertical plate 36 is provided at the bottom of the casting limiting vertical plate 36. The horizontal limiting plate 37 and the vertical limiting plate 36 are spliced ​​together to form a U-shaped structure. The horizontal limiting plate 37 and the vertical limiting plate 36 are sleeved on the outside of the reinforcing steel frame 5. Two sets of I-beam seats 38 are fixedly connected to the outer wall of the platform protective frame 31. Both sets of I-beam seats 38 are movably snapped onto the ends of the I-beams 2. A sealing plate 39 is fixedly connected to one end of the inner wall of the vertical limiting plate 36 and the horizontal limiting plate 37. The surface of the sealing plate 39 has several sets of through holes for penetrating the ends of the reinforcing steel frame 5. The inner walls of the vertical limiting plate 36, the horizontal limiting plate 37 and the sealing plate 39 form a casting limiting cavity.

[0037] Specifically, the ladder 34 is used to connect different construction floors 1, so that after several sets of construction platform mechanisms 3 are installed on different construction floors 1, the ladder 34 can be used to increase the efficiency of the pouring construction on each construction floor 1 (for example, such as...). Figure 4 (as shown);

[0038] The I-beam support 38 is used for quick snap-fitting to the end of the I-beam 2 on each construction floor 1. After the cantilever pouring on each construction floor 1 is completed, the I-beam support 38 can be manually disassembled by construction personnel to separate it from the I-beam 2, facilitating the hoisting of the platform protection frame 31 to the upper or lower floors (for example, such as...). Figure 5 (as shown);

[0039] The bearing platform 32 is used for construction workers to stand on its top and pull the pouring limiting vertical plates 36 on both sides, so that the inner walls of the pouring limiting vertical plates 36, the pouring limiting horizontal plates 37 and the sealing plate 39 form a pouring limiting cavity, which is slidably sleeved on the outside of the steel reinforcement frame bars 5 on both sides. The other end of the pouring limiting cavity is spliced ​​with the end of the floor horizontal beam 4 to form a closed grouting space, which is used for the pouring and forming of multiple cantilevered sections on the same floor.

[0040] The working principle of the cantilever in a confined space with multiple floors proposed in this embodiment of the invention is as follows:

[0041] The ladder 34 is used to connect different construction floors 1. After several sets of construction platform mechanisms 3 are installed on different construction floors 1, the ladder 34 can be used to increase the efficiency of the pouring construction on each construction floor 1.

[0042] The I-beam base 38 is used to quickly snap onto the end of the I-beam 2 on each construction floor 1. After the cantilever on each construction floor 1 is poured, the I-beam base 38 can be manually disassembled by the construction personnel to separate it from the I-beam 2, making it easy to hoist the platform protection frame 31 to the upper or lower floor.

[0043] The support platform 32 is used for construction workers to stand on top of it and pull the pouring limit vertical plates 36 on both sides, so that the inner walls of the pouring limit vertical plates 36, the pouring limit horizontal plates 37 and the sealing plate 39 form a pouring limit cavity, which is slidably sleeved on the outside of the steel reinforcement frame bars 5 on both sides. The other end of the pouring limit cavity is spliced ​​with the end of the floor horizontal beam 4 to form a closed pouring space, which is used for the pouring and forming of multiple cantilevered sections on the same floor.

[0044] Based on the aforementioned cantilever in a multi-story confined space, this embodiment of the invention also provides a construction method for a cantilever in a multi-story confined space, comprising the following steps:

[0045] One end of the I-beam 2 extends to the outside of the construction floor 1 for hoisting the construction platform mechanism 3, so that the construction platform mechanism 3 fits against the outside of the construction floor 1.

[0046] The other end of the I-beam 2 is threaded and fastened to the top of the construction floor 1, thus stabilizing the construction platform mechanism 3.

[0047] The construction platform mechanism 3 is used for standing construction workers to pour the steel frame 5 on one side of the floor horizontal beam 4, and after curing, it forms a cantilever.

[0048] By hoisting the construction platform mechanism 3 to the I-beams 2 on different construction floors 1, the casting and forming of the external cantilever of the construction floor 1 in a narrow space with multiple floors can be achieved.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cantilever in a confined space with multiple floors, characterized in that: The system includes a construction floor (1) and a construction platform mechanism (3); a fence is installed at the top of the construction floor (1) and near its edge, and several sets of I-beams (2) are horizontally connected through the outer wall of the fence, with one end of each set of I-beams (2) threadedly fastened to the top of the construction floor (1); the construction platform mechanism (3) is movably engaged with the other end of the I-beams (2); several sets of floor horizontal beams (4) are embedded in the bottom of the construction floor (1), and steel reinforcement frames (5) are embedded in the floor horizontal beams (4), with the steel reinforcement frames (5) extending to both sides of the construction platform mechanism (3); the construction platform mechanism (3) includes a platform protection frame (31); the platform protection frame (31) is an open rectangular structure, and a load-bearing platform (32) is horizontally installed at the bottom of the inner wall of the platform protection frame (31); The two side walls of the platform protective frame (31) are horizontally provided with guide rails (35), and the two sets of guide rails (35) are symmetrically arranged with the central axis of the platform protective frame (31) as the center. Both sets of guide rails (35) are slidably connected with casting limiting vertical plates (36), and the bottom of the casting limiting vertical plates (36) is provided with casting limiting horizontal plates (37).

2. The cantilever in a confined space across multiple floors according to claim 1, characterized in that: An inspection port (33) is provided at the corner of the bearing platform (32). A ladder (34) is provided on the top of the bearing platform (32) and on the side near the inspection port (33). The other end of the ladder (34) extends at an incline to the inner wall of the platform protective frame (31).

3. The cantilever in a confined space across multiple floors according to claim 1, characterized in that: The casting limiting horizontal plate (37) and the casting limiting vertical plate (36) are spliced ​​together to form a U-shaped structure, and the casting limiting horizontal plate (37) and the casting limiting vertical plate (36) are sleeved on the outside of the steel reinforcement frame (5).

4. The cantilever in a confined space across multiple floors according to claim 1, characterized in that: The outer wall of the platform protective frame (31) is fixedly connected with two sets of I-beam seats (38), and both sets of I-beam seats (38) are movably snapped onto the ends of the I-beam (2).

5. The cantilever in a confined space across multiple floors according to claim 1, characterized in that: A sealing plate (39) is fixedly connected to one end of the inner wall of the casting limiting vertical plate (36) and the casting limiting horizontal plate (37), and the surface of the sealing plate (39) is provided with several sets of through holes for penetrating the ends of the reinforcing bar frame (5).

6. The cantilever in a confined space across multiple floors according to claim 1, characterized in that: The inner walls of the casting limiting vertical plate (36), the casting limiting horizontal plate (37), and the sealing plate (39) form a casting limiting cavity.

7. A construction method for a cantilever in a multi-story confined space according to any one of claims 1 to 6, characterized in that: The construction method includes: One end of the I-beam extends to the outside of the construction floor for hoisting the construction platform mechanism, so that the construction platform mechanism fits against the outside of the construction floor. The construction platform structure is stabilized by fastening the other end of the I-beam to the top of the construction floor with threads. The construction platform mechanism is used for standing construction workers to pour the steel frame strips on one side of the floor horizontal beam, forming a cantilever after curing; By using a construction platform mechanism to hoist I-beams on different construction floors, the external cantilever of the construction floor can be cast and formed in a narrow space with multiple floors.

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