Lightweight assembly type shell elevator foundation pit

Abstract

The utility model provides a light-weight assembly type shell elevator foundation pit, which relates to the field of assembly type structures, and comprises a prefabricated shell base, a prefabricated elevator shaft, a prefabricated anti-collision wall and an embedded part connected with an elevator superstructure, and the surface of the prefabricated shell base is provided with a prefabricated end seat connected with the elevator shaft. The top of the cross section of the prefabricated end seat adopts a bent waterproof cross section; the shell foundation is adopted as the foundation pit base, the self weight of the foundation can be reduced, and the bearing capacity of the foundation is improved; combination installation is carried out in the mode that large-size building components which are complex to disassemble are spliced and assembled on site, dependence on hoisting equipment is reduced, and in a word, construction is convenient and fast, the period is short, and efficiency is high; and the cost is reduced, and the method is particularly suitable for elevator adding projects under the condition that construction sites of old communities are limited in urban updating and under the condition of soft foundations.

Description

Technical Field

[0001] The utility model belongs to the field of prefabricated structures, and particularly relates to a light prefabricated shell elevator pit. Background Art

[0002] This patent disassembles a complex elevator pit into multiple standardized prefabricated single small components, achieving the purpose of few specifications and multi-combination design. It improves the versatility of prefabricated components and parts. Moreover, the prefabricated shell foundation is a foundation form that can both reduce the weight of prefabricated components and improve the foundation bearing capacity, and it can better play its energy-saving and carbon-reducing role in elevator pits with a relatively large single foundation volume.

[0003] Especially in the field of adding elevators to existing residential buildings, using cast-in-place elevator pits is time-consuming and laborious. Using ordinary prefabricated flat foundation components increases the excavation area of the foundation pit, the prefabricated components are heavy, and due to site restrictions, large lifting equipment cannot enter the site, making it very difficult to implement. While using this patent can not only improve the foundation bearing capacity and indirectly reduce the excavation area, but also reduce the weight of a single prefabricated component, making it convenient for manufacturing, transportation and installation.

[0004] In summary, therefore, the utility model provides a light prefabricated shell elevator pit to solve the above problems. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A light prefabricated shell elevator pit, including a prefabricated base, a prefabricated elevator shaft, a prefabricated anti-collision wall and a buried steel plate connected to the upper structure of the elevator. The prefabricated base uses a shell foundation as the foundation of the pit, and its surface is provided with a prefabricated end seat for connecting the prefabricated elevator shaft. The top of the cross-section of the prefabricated end seat adopts a bent waterproof section. The prefabricated elevator shaft is arranged on the top of the prefabricated end seat, and a first inserted bar is arranged at the bottom of the prefabricated elevator shaft. A third jack is opened at the top of the prefabricated elevator shaft, and buried steel plates for connecting the upper structure are arranged at the four corners of the top of the prefabricated elevator shaft. Steel structure columns and prefabricated anti-collision walls are respectively arranged at the top of the prefabricated elevator shaft, and a second inserted bar is arranged at the bottom of the prefabricated anti-collision wall.

[0007] Further, in the utility model, the number of the steel structure columns is four, and the four steel structure columns are distributed at the four corners of the top of the prefabricated elevator shaft. The number of the prefabricated anti-collision walls is three, and they are distributed on both sides and the rear end of the top of the prefabricated elevator shaft. The prefabricated anti-collision wall is embedded between two steel structure columns and filled with cement or fine aggregate micro-expansion concrete for caulking.

[0008] Further, in the present utility model, structural adhesive is applied to the top of the prefabricated elevator shaft and poured into the inner cavity of the third jack. The bottom of the steel structure column is fixedly connected to the embedded steel plate by welding. The bottom of the second reinforcing bar of the prefabricated anti-collision wall extends into the inner cavity of the third jack, and is adhered to the prefabricated elevator shaft through the structural adhesive on the top of the prefabricated elevator shaft and in the third jack.

[0009] Further, in the present utility model, the top cross-section of the prefabricated end seat adopts a bent waterproof cross-section. This bent waterproof cross-section preferably adopts a Z-shaped design, and a first jack and a second jack are respectively opened on the inner and outer sides of its top. Structural adhesive is applied to the top of the prefabricated end seat and poured into the inner cavities of the first jack and the second jack. The bottom of the prefabricated elevator shaft has a corresponding bent waterproof cross-section. The bottom of the first reinforcing bar of the prefabricated elevator shaft extends into the inner cavities of the first jack and the second jack, and is adhered to the prefabricated end seat through the structural adhesive on the top of the prefabricated end seat and in the first jack and the second jack.

[0010] Further, in the present utility model, the prefabricated base adopts a shell foundation structure. The inner part of its shell is a spherical surface, and its top is a plane within the range of the prefabricated elevator shaft and a spherical surface outside the range of the prefabricated elevator shaft.

[0011] Further, in the present utility model, a ring beam is opened at the lower end of the surface of the prefabricated base, and an annular groove is arranged outside the ring beam. An annular prestressed steel bar is arranged in the inner cavity of the annular groove, and the inner cavity of the annular groove is sealed with cement.

[0012] Beneficial effects: The present utility model has the following beneficial effects:

[0013] The present utility model can stably support the prefabricated elevator shaft, the steel structure column and the prefabricated anti-collision wall through the prefabricated base and the prefabricated end seat. Moreover, the prefabricated elevator shaft, the steel structure column and the prefabricated anti-collision wall can protect the elevator. By driving the first reinforcing bar of the prefabricated elevator shaft into the inner cavities of the first jack and the second jack, the assembly of the prefabricated base and the prefabricated end seat with the prefabricated elevator shaft is realized. At the same time, by placing the steel structure column and the prefabricated anti-collision wall on the top of the prefabricated elevator shaft, and the steel structure column contacts the embedded steel plate, the prefabricated anti-collision wall drives the second reinforcing bar into the inner cavity of the third jack to complete the clamping, thereby realizing the assembly of the steel structure column and the prefabricated anti-collision wall with the prefabricated elevator shaft. By adopting a shell foundation as the foundation of the foundation pit, the self-weight of the foundation can be reduced and the bearing capacity of the foundation can be improved; by adopting the method of plugging and assembling large-volume building components with complex disassembly on-site, the dependence on hoisting equipment is reduced. In short, it is convenient for construction, has a short cycle, high efficiency, reduces costs, and is especially suitable for the elevator installation projects in old residential areas with limited construction sites and soft foundation conditions during urban renewal. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic connection structure view of the prefabricated base, prefabricated end seat and the first jack of the present utility model;

[0016] Figure 3 is a schematic connection structure view of the prefabricated elevator shaft, the third jack and the first reinforcement bar of the present utility model;

[0017] Figure 4 is a schematic connection structure view of the prefabricated anti-collision wall and the second reinforcement bar of the present utility model;

[0018] Figure 5 is a schematic structural view of the front view sectional separation state of the present utility model;

[0019] Figure 6 is a schematic partial front view sectional structure view of the prefabricated base, prefabricated end seat and prefabricated elevator shaft of the present utility model.

[0020] In the figure:

[0021] 1. Prefabricated base; 2. Prefabricated end seat; 3. First jack; 4. Second jack; 5. Prefabricated elevator shaft; 6. First reinforcement bar; 7. Third jack; 8. Embedded steel plate; 9. Steel structure column; 10. Prefabricated anti-collision wall; 11. Second reinforcement bar; 12. Annular groove; 13. Annular prestressed steel bar. Specific embodiments

[0022] In order to better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows. In the present disclosure, various aspects of the present utility model are described with reference to the drawings, and many illustrative embodiments are shown in the drawings. The embodiments of the present disclosure do not necessarily define all aspects of the present utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present utility model are not limited to any embodiment. In addition, some aspects of the present utility model can be used alone, or in any suitable combination with other aspects of the present utility model.

[0023] Embodiment 1

[0024] As Figure 1-6As shown in the figure, this is the first embodiment of the present utility model. This embodiment provides a lightweight prefabricated shell elevator pit, which includes a precast base 1, a precast elevator shaft 5, a precast anti-collision wall 10, and a buried steel plate 8 connected to the upper structure of the elevator. The precast base 1 uses a shell foundation as the foundation of the pit, and its surface is provided with a precast end seat 2 for connecting the precast elevator shaft 5. The top of the cross-section of the precast end seat 2 adopts a bent waterproof section. The precast elevator shaft 5 is arranged on the top of the precast end seat 2, and a first reinforcing bar 6 is arranged at the bottom of the precast elevator shaft 5. A third jack 7 is opened at the top of the precast elevator shaft 5, and buried steel plates 8 for connecting the upper structure are arranged at the four corners of the top of the precast elevator shaft 5. Steel structure columns 9 and precast anti-collision walls 10 are respectively arranged at the top of the precast elevator shaft 5, and a second reinforcing bar 11 is arranged at the bottom of the precast anti-collision wall 10.

[0025] As Figure 1-6 shown, the precast base 1 and the precast end seat 2 can stably support the precast elevator shaft 5, the steel structure column 9, and the precast anti-collision wall 10, and the precast elevator shaft 5, the steel structure column 9, and the precast anti-collision wall 10 can protect the elevator. By driving the first reinforcing bar 6 of the precast elevator shaft 5 into the inner cavities of the first jack 3 and the second jack 4, the assembly of the precast base 1 and the precast end seat 2 with the precast elevator shaft 5 is realized. At the same time, by placing the steel structure column 9 and the precast anti-collision wall 10 on the top of the precast elevator shaft 5, and the steel structure column 9 contacts the buried steel plate 8, the precast anti-collision wall 10 drives the second reinforcing bar 11 into the inner cavity of the third jack 7 to complete the clamping, thereby realizing the assembly of the steel structure column 9 and the precast anti-collision wall 10 with the precast elevator shaft 5. By using a shell foundation as the foundation of the pit, the self-weight of the foundation can be reduced, and the bearing capacity of the foundation can be improved; the method of plugging and assembling large-volume building components with complex disassembly on site is adopted for combined installation, which reduces the dependence on hoisting equipment. In short, it is convenient for construction, has a short cycle, high efficiency, reduces costs, and is especially suitable for elevator installation projects in old residential areas with limited construction sites and soft foundation conditions during urban renewal.

[0026] Embodiment 2

[0027] Referring to Figure 1 、 3 and 4, this is the second embodiment of the present utility model. This embodiment is based on the previous embodiment.

[0028] In this embodiment, the number of steel structure columns 9 is four, and the four steel structure columns 9 are distributed at the four corners of the top of the precast elevator shaft 5. The number of precast anti-collision walls 10 is three, and they are distributed on both sides and the rear end of the top of the precast elevator shaft 5. The precast anti-collision wall 10 is embedded between two steel structure columns 9 and filled with cement or fine aggregate micro-expansion concrete for caulking.

[0029] The top of the prefabricated elevator shaft 5 is coated with structural adhesive and the inner cavity of the third jack 7 is filled with structural adhesive. The bottom of the steel structure column 9 is fixedly connected to the embedded steel plate 8 by welding. The prefabricated anti-collision wall 10 extends to the inner cavity of the third jack 7 through the bottom of the second reinforcing bar 11 and is bonded to the prefabricated elevator shaft 5 by the structural adhesive on the top of the prefabricated elevator shaft 5 and in the third jack 7.

[0030] As Figure 1 、 3 and shown in 4, the embedded steel plate 8 and the steel structure column 9 are fixed by welding, thus ensuring the firmness when the steel structure column 9 and the embedded steel plate 8 are connected. At the same time, the inner part of the third jack 7 is coated with structural adhesive. When the second reinforcing bar 11 enters the inner part of the third jack 7, the structural adhesive will bond the third jack 7 and the second reinforcing bar 11, thereby ensuring the firmness of the connection between the third jack 7 and the second reinforcing bar 11, and at the same time ensuring the connection stability between the steel structure column 9 and the prefabricated anti-collision wall 10 and the embedded steel plate 8 and the prefabricated elevator shaft 5.

[0031] Embodiment 3

[0032] Referring to Figure 2 、 3 、5 and 6, this is the third embodiment of the present utility model, and this embodiment is based on the first two embodiments.

[0033] In this embodiment, the top cross-section of the prefabricated end seat 2 adopts a bent waterproof cross-section. This bent waterproof cross-section preferably adopts a Z-shaped design, and the first jack 3 and the second jack 4 are respectively opened on the inner and outer sides of its top. The top of the prefabricated end seat 2 is coated with structural adhesive and the inner cavities of the first jack 3 and the second jack 4 are filled with structural adhesive. The bottom of the prefabricated elevator shaft 5 has a corresponding bent waterproof cross-section. The prefabricated elevator shaft 5 extends to the inner cavities of the first jack 3 and the second jack 4 through the bottom of the first reinforcing bar 6 and is bonded to the prefabricated end seat 2 by the structural adhesive on the top of the prefabricated end seat 2 and in the first jack 3 and the second jack 4.

[0034] The prefabricated base 1 adopts a shell foundation structure, the inner part of its shell is a spherical surface, its top is a plane within the range of the prefabricated elevator shaft 5, and a spherical surface outside the range of the prefabricated elevator shaft 5.

[0035] A ring beam is opened at the lower end of the surface of the prefabricated base 1, and an annular groove 12 is arranged on the outer side of the ring beam. An annular prestressed steel bar 13 is arranged in the inner cavity of the annular groove 12, and the inner cavity of the annular groove 12 is sealed with cement.

[0036] As Figure 2 、 3As shown in FIGS. 5 and 6, the tops of the precast base 1 and the precast end seat 2 and the bottom of the precast elevator shaft 5 are all designed in a Z shape. Thus, after installation and assembly, the waterproof effect at the connection between the precast base 1 and the precast end seat 2 and the precast elevator shaft 5 can be improved. And structural adhesive is used for bonding to ensure the connection firmness. By applying structural adhesive inside the first socket 3 and the second socket 4, when the first reinforcing bar 6 enters and connects inside the first socket 3 and the second socket 4, its connection firmness is ensured. The annular groove 12 can be used to place the annular prestressed steel bar 13, and cement plugging can be used to prevent the annular prestressed steel bar 13 from moving out. The annular prestressed steel bar 13 can disperse the pressure borne by the precast base 1 to ensure the stability when the precast base 1 is supporting.

[0037] During use, first place the precast base 1 on the ground. Through the soil entering the inside of the precast base 1, the tightness of the contact between the precast base 1 and the ground is ensured, and the stability of the precast base 1 is ensured. Immediately afterwards, apply structural adhesive inside the second socket 4, on the tops of the precast base 1 and the precast end seat 2. Then place the precast elevator shaft 5 on the tops of the precast end seat 2 and the precast base 1, so that the precast elevator shaft 5 drives the first reinforcing bar 6 to gradually enter the inner cavities of the first socket 3 and the second socket 4. Through the structural adhesive, the precast elevator shaft 5 is tightly bonded to the precast base 1 and the precast end seat 2, and the first reinforcing bar 6 is tightly connected to the first socket 3 and the second socket 4, thus realizing the assembly of the precast base 1, the precast end seat 2 and the precast elevator shaft 5. Then apply structural adhesive on the top of the embedded steel plate 8 and inside the third socket 7. Then place the steel structure column 9 and the precast anti-collision wall 10 on the top of the precast elevator shaft 5. Through the structural adhesive on the top of the embedded steel plate 8, the steel structure column 9 and the embedded steel plate 8 are tightly bonded, and the precast anti-collision wall 10 drives the second reinforcing bar 11 to enter the inner cavity of the third socket 7. The second reinforcing bar 11 and the third socket 7 are bonded through the structural adhesive to complete the clamping connection, realizing the assembly of the steel structure column 9 and the precast anti-collision wall 10 and the precast elevator shaft 5. By adopting the assembly method of plugging and adhesion to quickly install the precast components, it is relatively convenient. It not only reduces the construction period, improves the construction efficiency, but also greatly reduces the labor cost. At the same time, the elevator can be protected by the precast elevator shaft 5, the steel structure column 9 and the precast anti-collision wall 10. And because the precast base 1 and the precast end seat 2 are precast and fixedly connected, the annular prestressed steel bar 13 can disperse the pressure borne by the precast base 1. Thus, the precast base 1 and the precast end seat 2 can stably support the precast elevator shaft 5, the steel structure column 9 and the precast anti-collision wall 10 to ensure the stability during later use.

[0038] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. The control method is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in this field. Moreover, this application document is mainly used to protect the mechanical device, so the control method and circuit connection will not be explained in detail in this application document.

[0039] Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model pertains can make various modifications and refinements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to that defined by the claims.

Claims

1. A lightweight prefabricated shell elevator pit, comprising a precast base (1), a precast elevator shaft (5), a precast anti-collision wall (10) and a buried steel plate (8) connected to the upper structure of the elevator, characterized in that: The precast base (1) uses a shell foundation as the foundation pit foundation, and a precast end seat (2) for connecting the precast elevator shaft (5) is provided on its surface. The top of the cross-section of the precast end seat (2) adopts a bent waterproof section. The precast elevator shaft (5) is arranged on the top of the precast end seat (2), and a first reinforcing bar (6) is arranged at the bottom of the precast elevator shaft (5). A third socket (7) is opened at the top of the precast elevator shaft (5), and embedded steel plates (8) for connecting the upper structure are arranged at the four corners of the top of the precast elevator shaft (5). A steel structure column (9) and a precast anti-collision wall (10) are respectively arranged at the top of the precast elevator shaft (5), and a second reinforcing bar (11) is arranged at the bottom of the precast anti-collision wall (10).

2. The light prefabricated shell elevator pit according to claim 1, characterized in that: The number of the steel structure columns (9) is four, and the four steel structure columns (9) are distributed at the four corners of the top of the precast elevator shaft (5). The number of the precast anti-collision walls (10) is three, and they are distributed on both sides and the rear end of the top of the precast elevator shaft (5). The precast anti-collision wall (10) is embedded between two steel structure columns (9) and the joints are filled with cement or fine aggregate micro-expansion concrete.

3. The light prefabricated shell elevator pit according to claim 1, characterized in that: The top of the precast elevator shaft (5) is coated with structural adhesive and the cavity of the third socket (7) is filled with structural adhesive. The bottom of the steel structure column (9) is fixedly connected to the embedded steel plate (8) by welding. The bottom of the precast anti-collision wall (10) extends into the cavity of the third socket (7) through the second reinforcing bar (11), and is bonded to the precast elevator shaft (5) by the structural adhesive on the top of the precast elevator shaft (5) and in the third socket (7).

4. The light prefabricated shell elevator pit according to claim 1, wherein: The top of the cross-section of the precast end seat (2) adopts a bent waterproof section. This bent waterproof section preferably adopts a Z-shaped design, and a first socket (3) and a second socket (4) are respectively opened on the inner side and the outer side of its top. The top of the precast end seat (2) is coated with structural adhesive and the cavities of the first socket (3) and the second socket (4) are filled with structural adhesive. The bottom of the precast elevator shaft (5) has a corresponding bent waterproof section. The bottom of the precast elevator shaft (5) extends into the cavities of the first socket (3) and the second socket (4) through the first reinforcing bar (6), and is bonded to the precast end seat (2) by the structural adhesive on the top of the precast end seat (2) and in the first socket (3) and the second socket (4).

5. The light prefabricated shell elevator pit according to claim 1, wherein: The shell foundation structure adopted by the precast base (1) has a spherical surface inside the shell, and its top is a plane within the range of the precast elevator shaft (5) and a spherical surface outside the range of the precast elevator shaft (5).

6. The light prefabricated shell elevator pit according to claim 1, characterized in that: A ring beam is opened at the lower end of the surface of the precast base (1), and an annular groove (12) is arranged outside the ring beam. An annular prestressed steel bar (13) is arranged in the cavity of the annular groove (12), and the cavity of the annular groove (12) is sealed with cement.

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