Construction elevator channel laying method for super high-rise local floating-plate-free position

Abstract

The invention discloses a method for laying a construction hoist channel at a local floating plate-free position of a super high-rise, and relates to the technical field of civil engineering, the method comprises the following steps: preparing an M20 bolt, an overhanging No.18 I-shaped steel, a square tube, an M14 bolt, an 18mm template, a construction hoist temporary floor door, an M12 screw rod, a double-thread screw rod, a steel plate, a welding rod and a steel nail for laying the construction hoist channel; the channel is overhung through turn buckles, two round holes are formed in a beam side formwork at the position of each piece of I-shaped steel through an electric drill, an embedded part is temporarily fixed on the outer side of the beam through a matched special M12 screw, and the embedded part is prevented from deviating in the pouring process. The building hoist door is fixed on the square tube through bolts, all materials can be obtained locally, manufacturing and mounting are convenient, turnover use can be achieved, the construction efficiency is effectively improved, and the material and labor cost is saved.

Description

Technical Field

[0001] The invention relates to the field of civil engineering, and in particular to a method for laying an elevator channel for construction at a super-high-rise partial non-floating slab location. Background Art

[0002] At present, it is a common technology to install temporary construction elevators as vertical transportation equipment on the periphery of high-rise or super-high-rise buildings. The installation position of the construction elevator is limited by various factors, so some construction elevators are installed and attached to the floating plate position, and the cage runs close to the outer edge of the floating plate. According to the functional requirements of the design drawings, the floating plate is partially set here, and the rest is a non-floating plate area. When the cage of the construction elevator runs to this place, it will be hollow.

[0003] In the traditional construction process, an I-beam is laid flat on the floor slab directly facing the cage of the construction elevator as the cantilever main beam, and the outer end of the main beam is flush with the outer edge of the floating board. Steel pipes, wooden beams and templates are laid above the main beam to form an access channel. The defects of this process are that the structural floating board is not used, the finished surface of the paved channel is higher than the structural floor slab, the erection range is wide, the site area is large, the material consumption is large, the length of the flat I-beam is long, the weight of a single beam is large, and it is inconvenient for personnel to operate. In addition, the temporary floor door of the construction elevator needs to be fixed and installed separately. Summary of the invention

[0004] The main purpose of the present invention is to provide a method for laying an elevator passage for construction in a super-high-rise building without a floating slab, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A method for laying an elevator channel for construction at a super-high-rise partial non-floating slab location, comprising the following steps: S1. Prepare M20 bolts, cantilevered No. 18 I-beams, square tubes, M14 bolts, 18mm templates, temporary floor doors for construction elevators, M12 screws, stud screws, steel plates, welding rods, and steel nails for laying the construction elevator passage; S2. The channel is cantilevered with basket bolts. Two round holes are drilled on the beam side template at each I-beam position with an electric drill. The embedded parts are temporarily fixed on the outside of the beam with the matching special M12 screws to prevent the embedded parts from shifting during the pouring process. S3. Then, embed the flower basket cantilever embedded parts in the beam side in advance. When installing the embedded parts, ensure that the embedded parts are in close contact with the template foundation surface without any gaps to prevent the concrete slurry from seeping into the pipe of the embedded parts when pouring concrete; S4. After the installation of embedded parts is completed, the quality inspection department, technical department, engineering department, supervision unit and professional subcontractor will jointly accept the project. After the acceptance is qualified, concrete pouring will be carried out; S5. When the concrete solidifies and the strength reaches 15MPa, first twist out the temporary screw, then remove the outer formwork, and finally install the double-headed screw; S6. Then, the pre-buried bolts are subjected to pull-out tests under the same load and environmental conditions on site. The embedding depth and quality of the bolts must be inspected and accepted before the next step of construction can be carried out; S7. Steel plates are set at the ends of I-beams and welded manually with electrodes; S8. After the 18# I-beam of the flower basket cantilever is installed, square tubes are fully laid on the I-beam, and the square tubes are spot welded to the I-beam; S9. Fully spread the formwork on the square tube, and fix the formwork on the square tube with steel nails. At the same time, the outer side of the I-beam is fully welded with the square tube to form an integral force system for each I-beam; S10. Finally, fix the temporary floor door of the construction elevator to the square passage with M14 bolts.

[0006] Preferably, in step S1, the specifications of the square tube are 50mm×50mm×2.5mm, the double-headed screw is a high-strength double-headed screw of grade S8.8 M20×230mm in length, the specifications of the steel plate are 210mm×300mm×12mm, and the welding rod is of E43 series.

[0007] Preferably, in step S2, the diameter of the circular hole is 1.25 cm, the height of the circular hole from the board surface is preferably 70 mm, the horizontal distance between the center of the circular hole is based on the positioning of the plan layout drawing, the midline of the two is used for positioning the external frame uprights, and the circular holes of the entire layer should be at the same horizontal elevation.

[0008] Preferably, in step S4, direct contact between the vibrating rod and the embedded parts is strictly prohibited during pouring to ensure that the embedded parts are not damaged or deviated.

[0009] Preferably, in step S7, the I-beam and the steel plate are top-connected, and full welding is performed along the periphery of the I-beam during welding.

[0010] Preferably, in step S9, the finished surface of the template must be consistent with the elevation of the structural floor.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a cantilevered I-beam to be fixed on the structural beam by bolts, a square tube and a template are arranged on the I-beam, and the construction elevator door is fixed on the square tube by bolts. All materials can be obtained locally, are easy to manufacture and install, and can be used in a turnover manner, effectively speeding up construction efficiency, and saving material and labor costs. At the same time, the advantage of this process is that no structural floating plate is used, and the finished surface of the paved channel is higher than the structural floor slab. The erection range is wide, the occupied site range is large, the material consumption is large, the length of the flattened I-beam is long, the weight of a single piece is large, and it is inconvenient for personnel to operate. In addition, on the basis of using the structural floating plate as the construction channel, the present invention changes the I-beam laid on the floor slab to be installed on the beam side, so that the finished surface of the channel is flush with the structural floor slab, effectively reducing the occupied range of the construction channel, greatly saving paving materials, and at the same time shortening the length of the I-beam to facilitate personnel operation. In addition, while meeting the transportation of floor materials, the present invention fixes M14 bolts on the outer end square tube, which also provides a fixing point for the installation of a temporary floor door of the construction elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the construction elevator passage; Figure 2 Embedded drawing of cantilevered embedded parts of turnbuckle bolts; Figure 3 I-beam fixed section detail drawing; Figure 4 I-beam welding detail drawing; Figure 5 Elevation of the construction elevator access. DETAILED DESCRIPTION

[0013] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0014] like Figure 1-5 A method for laying an elevator channel for construction at a super-high-rise partial non-floating slab is shown, comprising the following steps: S1. Prepare M20 bolts, cantilevered No. 18 I-beams, square tubes, M14 bolts, 18mm templates, temporary floor doors for construction elevators, M12 screws, stud screws, steel plates, welding rods, and steel nails for laying the construction elevator passage; S2. The channel is cantilevered with basket bolts. Two round holes are drilled on the beam side template at each I-beam position with an electric drill. The embedded parts are temporarily fixed on the outside of the beam with the matching special M12 screws to prevent the embedded parts from shifting during the pouring process. S3. Then, embed the flower basket cantilever embedded parts in the beam side in advance. When installing the embedded parts, ensure that the embedded parts are in close contact with the template foundation surface without any gaps to prevent the concrete slurry from seeping into the pipe of the embedded parts when pouring concrete; S4. After the installation of embedded parts is completed, the quality inspection department, technical department, engineering department, supervision unit and professional subcontractor will jointly accept the project. After the acceptance is qualified, concrete pouring will be carried out; S5. When the concrete solidifies and the strength reaches 15MPa, first twist out the temporary screw, then remove the outer formwork, and finally install the double-headed screw; S6. Then, the pre-buried bolts are subjected to pull-out tests under the same load and environmental conditions on site. The embedding depth and quality of the bolts must be inspected and accepted before the next step of construction can be carried out; S7. Steel plates are set at the ends of I-beams and welded manually with electrodes; S8. After the 18# I-beam of the flower basket cantilever is installed, square tubes are fully laid on the I-beam, and the square tubes are spot welded to the I-beam; S9. Fully spread the formwork on the square tube, and fix the formwork on the square tube with steel nails. At the same time, the outer side of the I-beam is fully welded with the square tube to form an integral force system for each I-beam; S10. Finally, fix the temporary floor door of the construction elevator to the square passage with M14 bolts.

[0015] In step S1, the specification of the square tube is 50mm×50mm×2.5mm, the double-headed screw is a high-strength double-headed screw of S8.8 grade M20×230mm long, the specification of the steel plate is 210mm×300mm×12mm, and the welding rod adopts E43 series. In step S2, the diameter of the circular hole is 1.25cm, and the height of the circular hole from the plate surface is preferably 70mm. The horizontal distance between the center of the circular hole is based on the positioning of the plan layout diagram. The midline of the two is used for positioning the external frame uprights. The circular holes of the entire layer should be at the same horizontal elevation. In step S4, it is strictly forbidden for the vibrating rod to directly contact the embedded parts during pouring to ensure that the embedded parts are not damaged or offset. In step S7, the I-beam and the steel plate are top-connected, and full welding is performed along the periphery of the I-beam during welding. In step S9, the finished surface of the template must be consistent with the elevation of the structural floor. The present invention uses a cantilevered I-beam to be fixed to the structural beam with bolts, and a square is set on the I-beam. The square channel and template are used, and the construction elevator door is fixed on the square channel with bolts. All materials can be obtained locally, which is easy to manufacture and install and can be used in a turnover manner, effectively speeding up construction efficiency and saving material and labor costs. At the same time, the advantage of this process is that the structural floating plate is not used, and the finished surface of the paved channel is higher than the structural floor slab. The erection range is wide, the occupied site range is large, the material consumption is large, the length of the flat I-beam is long, the weight of a single piece is large, and it is inconvenient for personnel to operate. In addition, on the basis of using the structural floating plate as the construction channel, the I-beam laid on the floor slab is changed to be installed on the beam side, so that the finished surface of the channel is flush with the structural floor slab, effectively reducing the occupied area of ​​the construction channel, greatly saving paving materials, and at the same time shortening the length of the I-beam, which is convenient for personnel to operate. In addition, while meeting the transportation of floor materials, the M14 bolts are fixed on the outer end square channel, which also provides a fixing point for the installation of a temporary floor door of the construction elevator.

[0016] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A method for laying an elevator channel for construction in a super-high-rise building without floating slabs, characterized in that: The following steps are involved: S1. Prepare M20 bolts, cantilevered No. 18 I-beams, square tubes, M14 bolts, 18mm templates, temporary floor doors for construction elevators, M12 screws, stud screws, steel plates, welding rods, and steel nails for laying the construction elevator passage; S2. The channel is cantilevered with basket bolts. Two round holes are drilled on the beam side template at each I-beam position with an electric drill. The embedded parts are temporarily fixed on the outside of the beam with the matching special M12 screws to prevent the embedded parts from shifting during the pouring process. S3. Then, embed the flower basket cantilever embedded parts in the beam side in advance. When installing the embedded parts, ensure that the embedded parts are in close contact with the template foundation surface without any gaps to prevent the concrete slurry from seeping into the pipe of the embedded parts when pouring concrete; S4. After the installation of embedded parts is completed, the quality inspection department, technical department, engineering department, supervision unit and professional subcontractor will jointly accept the project. After the acceptance is qualified, concrete pouring will be carried out; S5. When the concrete solidifies and the strength reaches 15MPa, first twist out the temporary screw, then remove the outer formwork, and finally install the double-headed screw; S6. Then, the pre-buried bolts are subjected to pull-out tests under the same load and environmental conditions on site. The embedding depth and quality of the bolts must be inspected and accepted before the next step of construction can be carried out; S7. Steel plates are set at the ends of I-beams and welded manually with electrodes; S8. After the 18# I-beam of the flower basket cantilever is installed, square tubes are fully laid on the I-beam, and the square tubes are spot welded to the I-beam; S9. Fully spread the formwork on the square tube, and fix the formwork on the square tube with steel nails. At the same time, the outer side of the I-beam is fully welded with the square tube to form an integral force system for each I-beam; S10. Finally, fix the temporary floor door of the construction elevator to the square passage with M14 bolts.

2. A method for laying an elevator channel for construction of a super-high-rise partial non-floating slab according to claim 1, characterized in that: In the step S1, the specification of the square tube is 50mm×50mm×2.5mm, the double-headed screw is a high-strength double-headed screw of grade S8.8 M20×230mm in length, the specification of the steel plate is 210mm×300mm×12mm, and the welding rod is of E43 series.

3. A method for laying an elevator channel for construction of a super-high-rise partial non-floating slab according to claim 1, characterized in that: In step S2, the diameter of the circular hole is 1.25 cm, the height of the circular hole from the board surface is preferably 70 mm, the horizontal distance between the center of the circular hole is based on the positioning of the plan layout drawing, the midline of the two is used for positioning the external frame uprights, and the circular holes of the entire layer should be at the same horizontal elevation.

4. A method for laying an elevator channel for construction in a super-high-rise partial non-floating slab according to claim 1, characterized in that: In step S4, it is strictly forbidden for the vibrating rod to directly contact the embedded parts during pouring to ensure that the embedded parts are not damaged or deviated.

5. The method for laying an elevator passage for construction of a super-high-rise partial non-floating slab according to claim 1 is characterized in that: In step S7, the I-beam and the steel plate are top-connected, and full welding is performed along the periphery of the I-beam during welding.

6. The method for laying an elevator channel for construction of a super-high-rise partial non-floating slab according to claim 1 is characterized in that: In step S9, the finished surface of the template must be consistent with the elevation of the structural floor.

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