Assembly type shell elevator foundation pit suitable for soft soil foundation

Abstract

The utility model provides an assembly type shell elevator foundation pit suitable for a soft soil foundation, and relates to the field of elevator foundation pit shell foundations, the assembly type shell elevator foundation pit comprises a foundation shell, the top of the foundation shell is fixedly connected with a cup opening, and the lower end of the surface of the foundation shell is fixedly connected with a ring beam; through cooperation of the ring beams and the rib beams, the bearing capacity of the foundation shell can be improved, steel bars are placed in a limited mode through the limiting holes, stress bars can be placed through the groove bodies, the stress bars can disperse pressure, and the conical rings make contact with soft soil, so that soil entering resistance can be reduced, the foundation shell can enter the soft soil conveniently, and in the pressing-in process, the bearing capacity of the foundation shell is greatly improved. Air in the foundation shell can be exhausted through the vent holes, then the foundation shell can be filled with soft soil, the tooth blocks make close contact with the soft soil, the contact area of the tooth blocks and the soft soil is increased, the foundation can be attached more compactly, the foundation can bear larger loads, then the settlement amount is reduced, and the service life of the foundation is prolonged. And the condition of inclination or uneven settlement is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of elevator pit shell foundation, specifically a prefabricated shell elevator pit suitable for soft soil foundation. Background Technology

[0002] Elevator pits are usually located underground in buildings and are important structures that support elevator shafts and elevator equipment. Prefabricated shell foundations have high application value in elevator pit construction, which can improve construction efficiency. Prefabricated shell foundations are components that are prefabricated in the factory and can be quickly installed on the construction site. Compared with traditional concrete foundations, shell foundations have a faster construction speed and can shorten the pit construction cycle.

[0003] However, the existing elevator pit shell foundations are mostly flat-bottomed, resulting in a large contact area with the soil, which may lead to soil settlement or foundation subsidence, thus affecting their stability.

[0004] In summary, this utility model provides a prefabricated shell elevator pit suitable for soft soil foundations to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A prefabricated shell elevator pit suitable for soft soil foundation includes a base shell, a cup-shaped opening fixedly connected to the top of the base shell, a ring beam fixedly connected to the lower end of the surface of the base shell, rib beams fixedly connected to the surface of the base shell, a groove formed on the surface of the ring beam, and a reinforcing rib provided in the inner cavity of the groove, a connecting plate provided on the inner wall of the base shell, and a toothed block fixedly connected to one side of the connecting plate, a limit hole formed at the bottom of the inner cavity of the cup-shaped opening, a vent formed at the top of the base shell, and the inner cavity of the vent communicating with the inner cavity of the cup-shaped opening, and a conical ring fixedly connected to the bottom of the ring beam.

[0007] Furthermore, in this invention, there are two grooves, which are respectively located at the upper and lower ends of the surface of the ring beam.

[0008] Furthermore, in this invention, the two ends of the rib beam are fixedly connected to the cup opening and the ring beam, respectively, and the number of rib beams is six.

[0009] Furthermore, in this utility model, a screw is movably connected to one side of the connecting plate. The screw penetrates the connecting plate and enters the interior of the base shell, and is threadedly connected to the base shell.

[0010] Furthermore, in this utility model, a sleeve plate is fixedly connected to one side of the inner cavity of the tank, and a screw is threadedly connected to the inner cavity of the sleeve plate. One end of the screw is movably connected to a clamping block through a bearing, and the clamping block is in contact with the force-bearing rib.

[0011] Furthermore, in this utility model, a limiting groove is formed at the bottom of the inner cavity of the groove, a limiting block is fixedly connected to the bottom of the clamping block, the limiting block is located in the inner cavity of the limiting groove, and is slidably connected to the inner cavity of the limiting groove.

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

[0013] This invention utilizes a hollow foundation shell to reduce weight during transportation. The combination of ring beams and rib beams increases the foundation shell's load-bearing capacity. The cup-shaped opening matches the dimensions of the reinforced concrete retaining wall, and the limiting holes ensure the stability of the reinforcing bars during placement. The groove allows for the placement of load-bearing bars, which also distribute pressure, improving applicability. The conical ring contacts the soft soil, reducing soil penetration resistance and facilitating entry into the soft soil. During pressing, air inside the foundation shell is expelled through vents, allowing the soft soil to fill the interior and ensuring close contact between the toothed blocks and the soft soil. The increased contact area between the toothed blocks and the soft soil not only makes the foundation more compact but also allows it to withstand greater loads, reducing settlement and effectively preventing tilting or uneven settlement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the basic shell and the cup mouth of this utility model;

[0016] Figure 3 This is a utility model Figure 2 A magnified view of the structure at point A in the middle;

[0017] Figure 4 This is a schematic diagram of the connection structure of the connecting plate, toothed block and screw of this utility model.

[0018] In the picture:

[0019] 1. Base shell; 2. Cup mouth; 3. Ring beam; 4. Rib beam; 5. Groove; 6. Reinforcing rib; 7. Connecting plate; 8. Tooth block; 9. Limiting hole; 10. Vent hole; 11. Conical ring; 12. Sleeve plate; 13. Screw; 14. Clamping block; 15. Limiting block; 16. Limiting groove; 17. Screw. Detailed Implementation

[0020] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described 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 this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model. Example 1

[0021] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a prefabricated shell elevator pit suitable for soft soil foundation, including a base shell 1, a cup mouth 2 fixedly connected to the top of the base shell 1, a ring beam 3 fixedly connected to the lower end of the surface of the base shell 1, a rib beam 4 fixedly connected to the surface of the base shell 1, a groove 5 opened on the surface of the ring beam 3, and a stress-bearing rib 6 provided in the inner cavity of the groove 5, a connecting plate 7 provided on the inner wall of the base shell 1, and a toothed block 8 fixedly connected to one side of the connecting plate 7, a limit hole 9 opened at the bottom of the inner cavity of the cup mouth 2, a vent hole 10 opened at the top of the base shell 1, and the inner cavity of the vent hole 10 is connected to the inner cavity of the cup mouth 2, and a conical ring 11 fixedly connected to the bottom of the ring beam 3.

[0022] like Figure 1-4 As shown, the hollow shell 1 reduces the weight during transportation, and the combination of the ring beam 3 and the rib beam 4 increases the bearing capacity of the shell 1. The cup 2 matches the size of the reinforced concrete retaining wall, and the reinforcing bars are placed in a limiting hole 9 to ensure stability. The reinforcing bars 6 can be placed in the groove 5, and the reinforcing bars 6 can distribute pressure and improve applicability. The conical ring 11 contacts the soft soil, which reduces the resistance to soil entry and facilitates entry into the soft soil. During the pressing process, the air inside the shell 1 is discharged through the vent hole 10, which allows the soft soil to fill the interior of the shell 1 and makes the toothed block 8 in close contact with the soft soil. Since the toothed block 8 increases the contact area with the soft soil, it not only makes the foundation more compact but also allows the foundation to withstand greater loads, thereby reducing settlement and effectively preventing tilting or uneven settlement. Example 2

[0023] Reference Figure 1 , 2 4 and 5 represent the second embodiment of this utility model, which is based on the previous embodiment.

[0024] In this embodiment, there are two grooves 5, which are respectively opened at the upper and lower ends of the surface of the ring beam 3.

[0025] The two ends of the rib beam 4 are fixedly connected to the cup mouth 2 and the ring beam 3 respectively, and there are six rib beams 4.

[0026] A screw 17 is movably connected to one side of the connecting plate 7. The screw 17 passes through the connecting plate 7 and enters the interior of the base shell 1, and is threadedly connected to the base shell 1.

[0027] like Figure 1 , 2 As shown in Figure 4, there are two grooves 5, which can be used to place two stress-bearing ribs 6 to distribute the pressure. The number of grooves 5 can be determined according to the pressure conditions, ranging from two to four. At the same time, the rib beams 4 can distribute the pressure on the base shell 1, and the number of rib beams 4 can also be determined according to the pressure conditions, effectively improving the pressure-bearing performance of the base shell 1 and the ring beam 3. By rotating the screw 17, the screw 17 will gradually enter the internal thread of the base shell 1, thereby connecting the connecting plate 7 to the base shell 1. Conversely, the screw 17 will gradually disengage from the inside of the base shell 1, thereby disassembling the connecting plate 7 and the base shell 1. Example 3

[0028] Reference Figure 3 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0029] In this embodiment, a sleeve plate 12 is fixedly connected to one side of the inner cavity of the groove 5, and a screw 13 is threadedly connected to the inner cavity of the sleeve plate 12. One end of the screw 13 is movably connected to a clamping block 14 through a bearing, and the clamping block 14 is in contact with the force-bearing rib 6.

[0030] A limiting groove 16 is provided at the bottom of the inner cavity of the groove 5, and a limiting block 15 is fixedly connected to the bottom of the clamping block 14. The limiting block 15 is located in the inner cavity of the limiting groove 16 and is slidably connected to the inner cavity of the limiting groove 16.

[0031] like Figure 3 As shown, after the reinforcing rib 6 is placed in the inner cavity of the groove 5, the screw 13 is rotated. While the screw 13 rotates in the inner cavity of the sleeve plate 12, it can drive the clamping block 14 to move to one side, so that the clamping block 14 gradually contacts the reinforcing rib 6 and clamps the reinforcing rib 6. When the clamping block 14 moves, it will drive the limiting block 15 to move along the inner cavity trajectory of the limiting groove 16, thereby ensuring the stability of the clamping block 14 during movement and preventing misalignment of the clamping block 14 during movement.

[0032] In use, the foundation shell 1 and ring beam 3 are first placed on soft soil. The conical ring 11 at the bottom of the ring beam 3 can directly contact the soft soil, and the conical ring 11 reduces the resistance to soil penetration, thereby applying pressure to the foundation shell 1 and ring beam 3. The rib beam 4 can disperse the pressure on the foundation shell 1, and the reinforcing bar 6 can disperse the pressure on the ring beam 3, improving the bearing capacity of the foundation shell 1. During the pressing process, the soft soil will gradually enter the interior of the foundation shell 1, and the excess air inside the foundation shell 1 will be discharged outward through the vent hole 10, thereby filling the interior of the foundation shell 1 with soft soil. The soft soil will fit tightly with the toothed block 8. The toothed shape of the toothed block 8 increases the contact area with the soft soil, thereby making the foundation more compact and able to withstand greater loads, thus reducing settlement and effectively preventing tilting or uneven settlement. Then, the reinforcing bar is inserted into the limiting hole 9, which limits the reinforcing bar and ensures its stability. Finally, concrete is poured.

[0033] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0034] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A prefabricated shell elevator pit suitable for soft soil foundation, comprising a foundation shell (1), characterized in that: The top of the base shell (1) is fixedly connected to a cup mouth (2), the lower end of the surface of the base shell (1) is fixedly connected to a ring beam (3), the surface of the base shell (1) is fixedly connected to a rib beam (4), the surface of the ring beam (3) is provided with a groove (5), and the inner cavity of the groove (5) is provided with a stress-bearing rib (6), the inner wall of the base shell (1) is provided with a connecting plate (7), and a toothed block (8) is fixedly connected to one side of the connecting plate (7), a limiting hole (9) is opened at the bottom of the inner cavity of the cup mouth (2), the top of the base shell (1) is provided with a vent hole (10), and the inner cavity of the vent hole (10) is connected to the inner cavity of the cup mouth (2), and a conical ring (11) is fixedly connected to the bottom of the ring beam (3).

2. The prefabricated shell elevator pit suitable for soft soil foundation as described in claim 1, characterized in that: The number of the grooves (5) is two, and they are respectively opened at the upper and lower ends of the surface of the ring beam (3).

3. The prefabricated shell elevator pit suitable for soft soil foundation as described in claim 1, characterized in that: The two ends of the rib (4) are fixedly connected to the cup mouth (2) and the ring beam (3) respectively, and the number of ribs (4) is six.

4. The prefabricated shell elevator pit suitable for soft soil foundation as described in claim 1, characterized in that: A screw (17) is movably connected to one side of the connecting plate (7). The screw (17) passes through the connecting plate (7) and enters the interior of the base shell (1), and is threadedly connected to the base shell (1).

5. The prefabricated shell elevator pit suitable for soft soil foundation as described in claim 1, characterized in that: A sleeve plate (12) is fixedly connected to one side of the inner cavity of the groove (5). A screw rod (13) is threadedly connected to the inner cavity of the sleeve plate (12). One end of the screw rod (13) is movably connected to a clamping block (14) through a bearing, and the clamping block (14) is in contact with the force-bearing rib (6).

6. The prefabricated shell elevator pit suitable for soft soil foundation as described in claim 5, characterized in that: A limiting groove (16) is provided at the bottom of the inner cavity of the groove (5), and a limiting block (15) is fixedly connected to the bottom of the clamping block (14). The limiting block (15) is located in the inner cavity of the limiting groove (16) and is slidably connected to the inner cavity of the limiting groove (16).

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