A prefabricated elevator shaft structure and construction method thereof

Abstract

The present invention discloses a prefabricated elevator shaft structure and a construction method thereof, and relates to the technical field of prefabricated elevator shafts. The structure comprises a ground, a partition is arranged above the ground, a prefabricated bottom section is fixedly connected to the upper surface of the partition, a prefabricated top section is arranged above the prefabricated bottom section, a plurality of prefabricated middle sections are arranged between the prefabricated top section and the prefabricated bottom section, and a prefabricated foundation pit assembly is arranged below the ground. The present invention adds a foundation pit assembly below the bottom installation of the prefabricated bottom section of the elevator shaft, and a shock-absorbing buffer pad or a shock-absorbing spring assembly can be added and installed at the bottom of the elevator shaft room separated by the partition in the foundation pit assembly, so as to facilitate the subsequent construction and installation of the elevator and reduce the installation measures of shock absorption, and the separated elevator shaft room can facilitate the maintenance of the subsequent installation of the elevator from the bottom of the elevator shaft, and the adjacent air supply shaft room can supply air from the foundation pit assembly, so as to ensure the fresh air in the elevator shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated elevator shafts, and in particular to a prefabricated elevator shaft structure and a construction method thereof. Background Art

[0002] The elevator shaft is the hoistway where the elevator is installed. The size of the shaft is determined according to the type of elevator selected. The elevator track and counterweight track are installed on the shaft wall, the elevator door is installed in the reserved door opening, and there is an elevator machine room at the top of the shaft. In recent years, with the accelerated pace of transformation and upgrading of the construction industry, prefabricated concrete structures with distinct industrial characteristics have received widespread attention and rapid development. Due to their high rigidity and bearing capacity, elevator shafts often become the primary lateral force resisting components of structures under earthquakes. The current conservative practice is to use cast-in-place technology to construct elevator shafts, which is not conducive to improving quality and efficiency, and has caused obvious obstacles to the development of prefabricated concrete structures.

[0003] At present, elevator shafts usually adopt an integrated structure, which is usually large in size and weight, very inconvenient to transport, and has very high requirements for lifting equipment and lifting, which is not economical. At the same time, due to the large height dimension, hollowing is prone to occur inside. Conversely, if you want to use an integral mold for prefabrication, the cost of the mold will also increase.

[0004] For example, a prefabricated elevator shaft structure and a construction method thereof are disclosed in patent publication number CN118774444A. The prefabricated elevator shaft structure and the construction method thereof include: a prefabricated base and a square steel tube shaft mounted on the prefabricated base, the top of the square steel tube shaft is encapsulated with a top beam plate, and an air outlet is provided at the lower end of the top beam plate; one side of the square steel tube shaft is connected to the wall on the side of the building and fixed by a connecting clamp; the outer side of the square steel tube shaft is encapsulated by energy-saving glass; and openings connected to the square steel tube shaft are provided between adjacent floors.

[0005] However, the above-mentioned equipment adopts a steel structure design, which may be affected by typhoons. Strong winds may blow away the additional components between the steel structures, affecting the stability of the elevator installation in the subsequent steel structure design. In addition, the air circulation effect in the elevator shaft design is not obvious enough, and the bottom installation stability of the elevator shaft is not good enough.

[0006] To this end, we propose a prefabricated elevator shaft structure and its construction method to solve the above problems Summary of the invention

[0007] The object of the present invention is to provide a prefabricated elevator shaft structure and a construction method thereof to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a prefabricated elevator shaft structure, comprising a floor, a partition is arranged above the floor, a prefabricated bottom section is fixedly connected to the upper surface of the partition, a prefabricated top section is arranged above the prefabricated bottom section, a plurality of prefabricated middle sections are arranged between the prefabricated top section and the prefabricated bottom section, and a prefabricated foundation pit assembly is arranged below the floor;

[0009] The prefabricated foundation pit assembly includes a foundation pit bottom plate arranged below the ground, an annular enclosure plate is fixedly installed on the upper surface of the foundation pit bottom plate, a foundation pit reserved part is fixedly connected to the upper surface of the annular enclosure plate, connecting steel bars are connected to one side of the outer surface of the annular enclosure plate, and a foundation pit cover plate is connected via the connecting steel bars, and a partition plate is fixedly installed on the upper surface of the foundation pit bottom plate.

[0010] Furthermore, the partition separates the elevator shaft and the air supply shaft, and the elevator shaft and the air supply shaft are adjacent to each other. In the foundation pit assembly, it is convenient for the air supply chamber to supply air to the elevator shaft and supply air upward through the elevator shaft, thereby realizing the air circulation in the designed elevator shaft structure.

[0011] Furthermore, a square ring plate is fixedly connected to one side of the upper surface of the foundation pit cover plate, and an elevator shaft reserved part is fixedly connected to the upper surface of the square ring plate, and the lower side of the square ring plate corresponds to the upper side of the elevator shaft chamber, and the upper side of the elevator shaft reserved part is connected to the partition plate, and the upper side of the elevator shaft reserved part is fixedly connected with connecting bolts, wherein the elevator shaft chamber and the air supply shaft chamber separated by the partition plate on the upper surface of the foundation pit bottom plate in the foundation pit assembly can be conveniently installed for the prefabricated bottom section in the elevator shaft structure, thereby improving the installation stability of the bottom of the prefabricated bottom section, and a shock-absorbing pad or a shock-absorbing spring assembly can be added in the elevator shaft chamber to provide auxiliary installation for the subsequent installation of the elevator in the elevator shaft, and the air supply shaft chamber can supply air to the prefabricated bottom section from the ground to accelerate the air circulation in the elevator shaft structure.

[0012] Furthermore, a door opening is provided on one side of the outer surface of the prefabricated bottom section, the prefabricated middle section and the prefabricated top section, and the prefabricated bottom section, the prefabricated middle section and the prefabricated top section are cast with concrete, and cast transverse steel bars and cast longitudinal steel bars are staggered inside, and the cast transverse steel bars and cast longitudinal steel bars are distributed in sequence at equal intervals, wherein the prefabricated middle section is hoisted above the prefabricated bottom section, and the prefabricated section docking installation holes and the prefabricated section docking positioning holes opened on the bottom surface of the prefabricated middle section are respectively docked and plugged with the prefabricated section connection reserved parts and the prefabricated section connection reserved positioning parts for docking and plugging installation, and after the installation of the prefabricated middle section and the upper surface of the prefabricated bottom section is completed, the staff bolts the reserved part fastening bolts from the reserved part installation groove to the prefabricated section connection reserved positioning parts for fixing.

[0013] Furthermore, a connection component is arranged above the prefabricated bottom section, and the connection component includes a prefabricated section connection reserved part and a prefabricated section connection reserved positioning part fixedly connected to the upper surface of the prefabricated bottom section, a prefabricated section docking installation hole is opened on the bottom surface of the prefabricated intermediate section, a prefabricated section docking positioning hole is opened on the bottom surface of the prefabricated intermediate section, and a plurality of reserved part installation grooves are opened on the inner wall of the prefabricated intermediate section, and a reserved part fastening bolt is provided on the fixed path above the prefabricated section connection reserved positioning part.

[0014] Furthermore, a top plate is fixedly connected to the upper surface of the prefabricated top section, and lifting parts are connected to both sides of the upper outer surface of the prefabricated bottom section, the prefabricated middle section and the upper part of the outer surface of the prefabricated top section. A top plate connecting hole passes through the upper surface of the top plate, and the prefabricated section connection reserved parts and the prefabricated section connection reserved positioning parts connected to the top surface of the prefabricated top section are respectively connected to the top plate through the top plate connecting holes, and the top of the prefabricated section connection reserved positioning parts passes through the prefabricated section docking positioning holes and is connected to the bottom surface of the prefabricated middle section above the prefabricated bottom section.

[0015] Furthermore, the inner wall of the prefabricated bottom section is fixedly connected to the steel frame main shaft, and one side of the outer surface of the steel frame main shaft is fixedly connected to a three-way fixing piece, and the three sides of the outer surface of the three-way fixing piece are respectively fixedly connected to reinforcing ribs, and a protective net outer frame is clamped between every two of the reinforcing ribs, and the inner wall of the protective net outer frame is fixedly connected to the protective net, and one side of the outer surface of the protective net outer frame is in contact with the inner wall of the prefabricated bottom section, wherein the prefabricated section connection reserved piece and the prefabricated section connection reserved positioning piece are connected from the upper surface of the prefabricated bottom section to the top plate, with good overall consistency, and are fixedly installed inside the prefabricated bottom section, the prefabricated middle section and the prefabricated top section. Install the main shaft of the steel frame, and extend the reinforcing ribs outward through the main shaft of the steel frame and the three-way fixings to enhance the stability inside the elevator shaft. Install a protective net outer frame on one side of the outer surface of the reinforcing rib, that is, between the outer surfaces of every two reinforcing ribs, and install a protective net on the protective net outer frame. The protective net and the protective net outer frame are in contact with the inner wall of the prefabricated bottom section, providing internal support for the prefabricated bottom section and the prefabricated middle section and prefabricated top section stacked on top thereof, thereby improving the overall stability. For the calculation of the seismic performance of the elevator shaft, first determine the design seismic action of the elevator shaft wall, which is determined by the seismic parameters and the structural system, and use V=C x W for calculation, where V is the seismic force, C is the seismic coefficient, and W is the structural weight. Calculate the seismic capacity of the elevator shaft, and assemble and install it to meet the design requirements.

[0016] The present invention also provides a construction method based on the above-mentioned prefabricated elevator shaft, comprising the following steps:

[0017] S1: Install the foundation pit assembly and pour concrete at the connection between the annular plates in the foundation pit assembly;

[0018] S2: Connect the prefabricated bottom section with the reserved part of the elevator shaft above the square ring plate and fix them;

[0019] S3: hoisting a plurality of prefabricated middle sections in sequence above the prefabricated bottom section, and connecting and fixing each of the prefabricated middle sections through prefabricated section connection reserved positioning pieces and prefabricated section connection reserved pieces;

[0020] S4: Connect the prefabricated top section to the uppermost prefabricated middle section through the corresponding prefabricated section connection reserved positioning parts and the plug-in positions of the prefabricated section connection reserved parts, and connect the top plate above the prefabricated top section.

[0021] Furthermore, in step S1, when the foundation pit assembly is installed, standard concrete pouring is performed between the multiple annular enclosures installed on the upper surface of the foundation pit floor through the connected connecting steel bars, the pouring baffles are used to surround the connecting steel bars at the connection points of the annular enclosures and concrete is poured, the pouring baffles are removed after drying and curing, a plurality of partitions are installed on the upper surface of the foundation pit floor, and the positions of the partitions are set and installed to separate the elevator shaft and the air supply shaft.

[0022] Further, in step S3, the prefabricated intermediate sections stacked and installed in the upper prefabricated intermediate section through the prefabricated section docking installation hole and the prefabricated section docking positioning hole opened on its bottom surface are respectively plugged into the prefabricated section connection reserved parts and the prefabricated section connection reserved positioning parts connected to the upper surface of the next prefabricated intermediate section, and the prefabricated section connection reserved positioning parts are installed and fixed with the reserved part fastening bolts in the reserved part installation groove, wherein the prefabricated bottom section, the prefabricated intermediate section and the prefabricated top section have all been prefabricated in the factory. The internal steel bar connection mechanism and concrete The prefabricated sections are poured and completed. They are transported to the construction site by transport vehicles for assembly and installation. The crane connects the lifting parts through steel cables and lifts the prefabricated bottom sections in turn for connection. The prefabricated middle sections and prefabricated top sections are stacked and hoisted on the upper surface of the prefabricated bottom sections in turn. Finally, the top plate is installed on the upper surface of the prefabricated top section. During the installation of each prefabricated section, the design load of the elevator shaft is determined. The design load includes the weight of the elevator itself, the weight of the passengers and other additional loads. In the calculation of the design load and the structural form of the elevator shaft, the formula M=σ x S is used to calculate the cross-sectional size of the elevator shaft wall to meet the requirements of the design load, where M is the bending moment, σ is the stress, and S is the cross-sectional area.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention adds a foundation pit assembly below the bottom installation of the prefabricated bottom section of the elevator shaft, and a shock-absorbing buffer pad or a shock-absorbing spring assembly can be additionally installed at the bottom of the elevator shaft chamber separated by a partition in the foundation pit assembly, so as to facilitate the construction and installation of subsequent elevators and reduce the installation measures of shock absorption. The separated elevator shaft chamber can facilitate the maintenance of the installation of subsequent elevators from the bottom of the elevator shaft, and the air supply shaft chamber arranged adjacently can supply air from the foundation pit assembly, thereby ensuring the freshness of the air in the elevator shaft.

[0025] The present invention divides the entire elevator shaft structure into a foundation pit component, a prefabricated bottom section, a plurality of prefabricated middle sections and a prefabricated top section, and reinforced concrete is poured between each prefabricated section. Each prefabricated section can be conveniently and quickly assembled and spliced, thereby reducing the construction time of the elevator shaft and improving work efficiency.

[0026] The present invention connects prefabricated section connection reserved parts and prefabricated section connection reserved positioning parts to the upper surface of the prefabricated bottom section, the upper surface of the prefabricated middle section and the upper surface of the prefabricated top section, and opens prefabricated section docking installation holes and prefabricated section docking positioning holes on the bottom surface of the prefabricated middle section and the bottom surface of the prefabricated top section. This makes it convenient for the prefabricated section connection reserved parts and the prefabricated section connection reserved positioning parts to quickly dock with the prefabricated section docking installation holes and the prefabricated section docking positioning holes when installing the prefabricated middle section and the prefabricated top section, thereby improving the efficiency of assembly and installation, and connecting the prefabricated section connection reserved positioning parts after installation with fastening bolts to improve the stability of assembly and installation.

[0027] The present invention enhances the stability of the interior of the elevator shaft by fixing a steel frame main shaft on the inner wall of the prefabricated bottom section, fixing a three-way fixing piece on one side of the outer surface of the steel frame main shaft, and installing reinforcing ribs by extending the three-way fixing piece outward, and installing a protective net outer frame on one side of the outer surface of the reinforcing ribs, that is, between the outer surfaces of every two reinforcing ribs, and installing a protective net on the protective net outer frame, and the protective net and the protective net outer frame are in contact with the inner wall of the prefabricated bottom section, thereby providing internal support force for the prefabricated bottom section and the prefabricated middle section and the prefabricated top section stacked thereon, thereby improving the overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the construction step flow structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0030] Figure 3 This is a schematic diagram of the steel frame structure of the inner wall of the elevator shaft of the present invention;

[0031] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0032] Figure 5 This is a schematic diagram of the front view structure of the prefabricated assembly prefabricated section of the elevator shaft of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal cast steel bar structure of the prefabricated section of the present invention;

[0034] Figure 7 It is a schematic diagram of the overall structure of the foundation pit of the present invention;

[0035] Figure 8 This is a schematic diagram of the foundation pit pouring connection structure of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the elevator shaft and the air supply shaft inside the foundation pit of the present invention.

[0037] In the figure: 1, ground; 2, foundation pit bottom plate; 201, annular enclosure; 202, connecting steel bars; 203, foundation pit reserved parts; 204, foundation pit cover; 205, square ring plate; 206, elevator shaft reserved parts; 3, partition; 301, elevator shaft room; 302, air supply shaft room; 4, connecting bolts; 5, prefabricated bottom section; 501, prefabricated section connection reserved parts; 502, prefabricated section connection reserved positioning parts; 503, prefabricated section Butt mounting hole; 504, prefabricated section butt positioning hole; 505, reserved part mounting groove; 506, reserved part fastening bolt; 6, door opening; 7, casting transverse reinforcement; 8, casting longitudinal reinforcement; 9, prefabricated middle section; 10, prefabricated top section; 11, top plate; 12, lifting parts; 13, top plate connecting hole; 14, steel frame main axis; 15, three-way fixings; 16, reinforcement ribs; 17, protective net outer frame; 18, protective net. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] During the construction process, the installation of elevators mostly involves cast-in-place foundations and bottom sections, and an upper steel shaft gallery frame structure. This involves a lot of wet work on site, a large amount of on-site assembly work, a long construction period, and is not environmentally friendly.

[0040] refer to Figure 1-Figure 9 , the present invention provides four technical solutions: Example

[0041] A prefabricated elevator shaft structure, comprising a floor 1, a partition 3 is arranged above the floor 1, a prefabricated bottom section 5 is fixedly connected to the upper surface of the partition 3, a prefabricated top section 10 is arranged above the prefabricated bottom section 5, a plurality of prefabricated middle sections 9 are arranged between the prefabricated top section 10 and the prefabricated bottom section 5, and a prefabricated foundation pit assembly is arranged below the floor 1;

[0042] The prefabricated foundation pit assembly includes a foundation pit bottom plate 2 arranged below the ground 1, an annular enclosure plate 201 is fixedly installed on the upper surface of the foundation pit bottom plate 2, a foundation pit reserved part 203 is fixedly connected to the upper surface of the annular enclosure plate 201, a connecting steel bar 202 is connected to one side of the outer surface of the annular enclosure plate 201, and a foundation pit cover plate 204 is connected through the connecting steel bar 202, and a partition plate 3 is fixedly installed on the upper surface of the foundation pit bottom plate 2;

[0043] The partition 3 separates the elevator shaft chamber 301 and the air supply shaft chamber 302, and the elevator shaft chamber 301 and the air supply shaft chamber 302 are adjacent to each other; a square ring plate 205 is fixedly connected to one side of the upper surface of the foundation pit cover 204, and an elevator shaft reserved part 206 is fixedly connected to the upper surface of the square ring plate 205, and the lower part of the square ring plate 205 corresponds to the upper part of the elevator shaft chamber 301, and the upper part of the elevator shaft reserved part 206 is connected to the partition 3, and the upper part of the elevator shaft reserved part 206 is fixedly connected with a connecting bolt 4.

[0044] In the present embodiment, the elevator shaft chamber 301 and the air supply shaft chamber 302 separated by the partition 3 on the upper surface of the foundation pit bottom plate 2 in the foundation pit assembly can facilitate the installation of the prefabricated bottom section 5 in the elevator shaft structure, thereby improving the installation stability of the bottom of the prefabricated bottom section 5, and a shock-absorbing pad or a shock-absorbing spring assembly can be added to the elevator shaft chamber 301 to provide auxiliary installation for the subsequent installation of the elevator in the elevator shaft, and the air supply shaft chamber 302 can supply air to the prefabricated bottom section 5 from below the ground 1 to accelerate the air circulation in the elevator shaft structure. Example

[0045] On the basis of the first embodiment, a door opening 6 is provided on one side of the outer surface of the prefabricated bottom section 5, the prefabricated middle section 9 and the prefabricated top section 10, and the prefabricated bottom section 5, the prefabricated middle section 9 and the prefabricated top section 10 are cast with concrete, and cast transverse steel bars 7 and cast longitudinal steel bars 8 are staggered inside, and the cast transverse steel bars 7 and cast longitudinal steel bars 8 are distributed in sequence at equal intervals;

[0046] A connection assembly is arranged above the prefabricated bottom section 5, and the connection assembly includes a prefabricated section connection reserved part 501 and a prefabricated section connection reserved positioning part 502 fixedly connected to the upper surface of the prefabricated bottom section 5, a prefabricated section docking installation hole 503 is opened on the bottom surface of the prefabricated intermediate section 9, a prefabricated section docking positioning hole 504 is opened on the bottom surface of the prefabricated intermediate section 9, and a plurality of reserved part installation grooves 505 are opened on the inner wall of the prefabricated intermediate section 9, and a reserved part fastening bolt 506 is provided in the fixed path above the prefabricated section connection reserved positioning part 502.

[0047] In this embodiment, the prefabricated middle section 9 is hoisted above the prefabricated bottom section 5, and the prefabricated section docking installation holes 503 and the prefabricated section docking positioning holes 504 opened on the bottom surface of the prefabricated middle section 9 are docked and plugged with the prefabricated section connection reserved parts 501 and the prefabricated section connection reserved positioning parts 502 respectively. After the installation of the prefabricated middle section 9 and the upper surface of the prefabricated bottom section 5 is completed, the staff bolts the reserved part fastening bolts 506 from the reserved part installation groove 505 to the prefabricated section connection reserved positioning parts 502 for fixing. Example

[0048] On the basis of the first and second embodiments, the upper surface of the prefabricated top section 10 is fixedly connected with a top plate 11, the prefabricated bottom section 5 and the prefabricated middle section 9 as well as both sides of the upper part of the outer surface of the prefabricated top section 10 are connected with hanging parts 12, the upper surface of the top plate 11 is penetrated with a top plate connecting hole 13, the prefabricated section connection reserved part 501 and the prefabricated section connection reserved positioning part 502 connected to the top surface of the prefabricated top section 10 are respectively connected to the top plate 11 through the top plate connecting hole 13, and the upper part of the prefabricated section connection reserved positioning part 502 passes through the prefabricated section docking positioning hole 504 to be connected to the bottom surface of the prefabricated middle section 9 above the prefabricated bottom section 5;

[0049] A steel frame main shaft 14 is fixedly connected to the inner wall of the prefabricated bottom section 5, and a three-way fixing part 15 is fixedly connected to one side of the outer surface of the steel frame main shaft 14, and reinforcing ribs 16 are respectively fixedly connected to three sides of the outer surface of the three-way fixing part 15, and a protective net outer frame 17 is clamped between every two reinforcing ribs 16, and a protective net 18 is fixedly connected to the inner wall of the protective net outer frame 17, and one side of the outer surface of the protective net outer frame 17 is in contact with the inner wall of the prefabricated bottom section 5.

[0050] In this embodiment, the prefabricated section connection reserved part 501 and the prefabricated section connection reserved positioning part 502 are connected from the upper surface of the prefabricated bottom section 5 to the top plate 11, and the overall consistency is good. The steel frame main shaft 14 is fixedly installed inside the prefabricated bottom section 5, the prefabricated middle section 9 and the prefabricated top section 10, and the reinforcing ribs 16 are extended outward through the steel frame main shaft 14 and the three-way fixing part 15 to enhance the stability of the interior of the elevator shaft. A protective net outer frame 17 is installed on one side of the outer surface of the reinforcing rib 16, that is, between the outer surfaces of every two reinforcing ribs 16, and a protective net 18 is installed on the protective net outer frame 17. The protective net 18 and the protective net outer frame 17 are in contact with the inner wall of the prefabricated bottom section 5, providing internal support force for the prefabricated bottom section 5 and the prefabricated middle section 9 and the prefabricated top section 10 stacked on it, thereby improving the overall stability. For the calculation of the seismic performance of the elevator shaft, the design earthquake action of the elevator shaft wall is first determined, and it is determined by the seismic parameters and the structural system, and V=C is adopted. xW is calculated, where V is the seismic force, C is the seismic coefficient, and W is the structural weight. The seismic resistance of the elevator shaft is calculated and assembled and installed to meet the design requirements. Example

[0051] A construction method based on the above-mentioned prefabricated elevator shaft comprises the following steps:

[0052] S1: installing the foundation pit assembly and pouring concrete at the connection between the annular enclosure plates 201 in the foundation pit assembly;

[0053] S2: Connect the prefabricated bottom section 5 to the elevator shaft reserved part 206 above the square ring plate 205 and fix them;

[0054] S3: A plurality of prefabricated middle sections 9 are sequentially hoisted above the prefabricated bottom section 5, and each of the prefabricated middle sections 9 is connected and fixed via a prefabricated section connection reserved positioning piece 502 and a prefabricated section connection reserved piece 501;

[0055] S4: Connect the prefabricated top section 10 to the uppermost prefabricated middle section 9 through the corresponding prefabricated section connection reserved positioning piece 502 and the plugging position of the prefabricated section connection reserved piece 501, and connect the top plate 11 above the prefabricated top section 10;

[0056] In step S1, when installing the foundation pit assembly, standard concrete pouring is performed between the multiple annular enclosures 201 installed on the upper surface of the foundation pit bottom plate 2 through the connected connecting steel bars 202, the pouring baffle is used to surround the connecting steel bars 202 at the connection of the annular enclosure 201 and concrete is poured, the pouring baffle is removed after drying and curing, a plurality of partitions 3 are installed on the upper surface of the foundation pit bottom plate 2, and the positions of the partitions 3 are set and installed to separate the elevator shaft chamber 301 and the air supply shaft chamber 302; in step S3, the prefabricated section docking installation holes 503 and the prefabricated section docking positioning holes 504 opened on the bottom surface of the previous prefabricated intermediate section 9 are respectively plugged into the prefabricated section connection reserved parts 501 and the prefabricated section connection reserved positioning parts 502 connected to the upper surface of the next prefabricated intermediate section 9, and the prefabricated section connection reserved positioning parts 502 are installed and fixed with the reserved part fastening bolts 506 in the reserved part installation grooves 505.

[0057] In this embodiment, the prefabricated bottom section 5, the prefabricated middle section 9 and the prefabricated top section 10 have all been prefabricated in the factory with the internal steel bar connection mechanism and concrete poured and completed. These prefabricated sections are transported to the construction site by a transport vehicle for assembly and installation. The crane connects the lifting parts 12 through steel cables and lifts the prefabricated bottom section 5 in sequence for connection. The prefabricated middle section 9 and the prefabricated top section 10 are stacked and hoisted on the upper surface of the prefabricated bottom section 5 in sequence. Finally, the top plate 11 is installed on the upper surface of the prefabricated top section 10. During the installation of each prefabricated section, the design load of the elevator shaft is determined. The design load includes the weight of the elevator itself, the weight of the passengers and other additional loads. In calculating the design load and the structural form of the elevator shaft, the formula M=σ x S is used to calculate the cross-sectional size of the elevator shaft wall to meet the requirements of the design load, where M is the bending moment, σ is the stress, and S is the cross-sectional area.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A prefabricated elevator shaft structure, comprising a floor (1), a partition plate arranged above the floor (1), a prefabricated bottom section (5) fixedly connected to the upper surface of the partition plate, a prefabricated top section (10) arranged above the prefabricated bottom section (5), a plurality of prefabricated intermediate sections (9) arranged between the prefabricated top section (10) and the prefabricated bottom section (5), characterized in that: A prefabricated foundation pit assembly is arranged below the ground (1); The prefabricated foundation pit assembly comprises a foundation pit bottom plate (2) arranged below the ground (1); an annular panel (201) is fixedly mounted on the upper surface of the foundation pit bottom plate (2); a foundation pit reserved part (203) is fixedly connected to the upper surface of the annular panel (201); a connecting steel bar (202) is connected to one side of the outer surface of the annular panel (201); a foundation pit cover plate (204) is connected via the connecting steel bar (202); and a partition plate 2 is fixedly mounted on the upper surface of the foundation pit bottom plate (2); The partition plate 2 is provided to separate an elevator shaft (301) and an air supply shaft (302), and the elevator shaft (301) and the air supply shaft (302) are adjacent to each other; A square ring plate (205) is fixedly connected to one side of the upper surface of the foundation pit cover plate (204), and an elevator shaft reserved part (206) is fixedly connected to the upper surface of the square ring plate (205), and the lower part of the square ring plate (205) corresponds to the upper part of the elevator shaft chamber (301), the upper part of the elevator shaft reserved part (206) is connected to the partition plate, and the upper part of the elevator shaft reserved part (206) is fixedly connected to a connecting bolt (4); A door opening (6) is provided on one side of the outer surface of the prefabricated bottom section (5), the prefabricated middle section (9) and the prefabricated top section (10), and the prefabricated bottom section (5), the prefabricated middle section (9) and the prefabricated top section (10) are cast with concrete, and cast transverse steel bars (7) and cast longitudinal steel bars (8) are staggeredly distributed inside, and the cast transverse steel bars (7) and cast longitudinal steel bars (8) are distributed in sequence at equal intervals.

2. A prefabricated elevator shaft structure according to claim 1, characterized in that: A connection assembly is arranged above the prefabricated bottom section (5), the connection assembly comprising a prefabricated section connection reserved piece (501) fixedly connected to the upper surface of the prefabricated bottom section (5) and a prefabricated section connection reserved positioning piece (502), a prefabricated section docking installation hole (503) is provided on the bottom surface of the prefabricated middle section (9), a prefabricated section docking positioning hole (504) is provided on the bottom surface of the prefabricated middle section (9), and a plurality of reserved piece installation grooves (505) are provided on the inner wall of the prefabricated middle section (9), and a reserved piece fastening bolt (506) is provided on the fixed path above the prefabricated section connection reserved positioning piece (502).

3. A prefabricated elevator shaft structure according to claim 2, characterized in that: The upper surface of the prefabricated top section (10) is fixedly connected to a top plate (11); the prefabricated bottom section (5), the prefabricated middle section (9) and both sides of the upper outer surface of the prefabricated top section (10) are connected to hanging parts (12); the upper surface of the top plate (11) is penetrated by a top plate connection hole (13); the prefabricated section connection reserved part (501) and the prefabricated section connection reserved positioning part (502) connected to the top surface of the prefabricated top section (10) respectively pass through the top plate connection hole (13) to be connected to the top plate (11); the upper part of the prefabricated section connection reserved positioning part (502) passes through the prefabricated section docking positioning hole (504) to be connected to the bottom surface of the prefabricated middle section (9) above the prefabricated bottom section (5).

4. The prefabricated elevator shaft structure according to claim 1, characterized in that: The inner wall of the prefabricated bottom section (5) is fixedly connected to a steel frame main shaft (14), and one side of the outer surface of the steel frame main shaft (14) is fixedly connected to a three-way fixing piece (15), and three sides of the outer surface of the three-way fixing piece (15) are respectively fixedly connected to reinforcing ribs (16), and a protective net outer frame (17) is clamped between every two of the reinforcing ribs (16), and a protective net (18) is fixedly connected to the inner wall of the protective net outer frame (17), and one side of the outer surface of the protective net outer frame (17) contacts the inner wall of the prefabricated bottom section (5).

5. The construction method of a prefabricated elevator shaft according to claim 3, characterized in that: The following steps are involved: S1: Install the foundation pit assembly and pour concrete at the joints between the annular panels in the foundation pit assembly; S2: Connect the prefabricated bottom section with the reserved part of the elevator shaft above the square ring plate and fix them; S3: hoisting a plurality of prefabricated middle sections in sequence above the prefabricated bottom section, and connecting and fixing each of the prefabricated middle sections through prefabricated section connection reserved positioning pieces and prefabricated section connection reserved pieces; S4: Connect the prefabricated top section to the uppermost prefabricated middle section through the corresponding prefabricated section connection reserved positioning parts and the plug-in positions of the prefabricated section connection reserved parts, and connect the top plate above the prefabricated top section.

6. The construction method of a prefabricated elevator shaft structure according to claim 5, characterized in that: In step S1, when installing the foundation pit assembly, standard concrete pouring is performed between the multiple annular enclosures installed on the upper surface of the foundation pit floor through the connected connecting steel bars, the pouring baffles are used to surround the connecting steel bars at the connection points of the annular enclosures and concrete is poured, the pouring baffles are removed after drying and curing, and multiple partitions 2 are installed on the upper surface of the foundation pit floor, and the positions of the partitions 2 are set and installed to separate the elevator shaft and the air supply shaft.

7. The construction method of a prefabricated elevator shaft structure according to claim 5, characterized in that: In step S3, the prefabricated section docking installation holes and the prefabricated section docking positioning holes opened on the bottom surface of the previous prefabricated intermediate section are respectively plugged into the prefabricated section connection reserved parts and the prefabricated section connection reserved positioning parts connected to the upper surface of the next prefabricated intermediate section, and the prefabricated section connection reserved positioning parts are installed and fixed with the reserved part fastening bolts in the reserved part installation groove.

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