Prefabricated steel structure pit foundation for adding elevator to existing multi-storey house

Abstract

A prefabricated steel structure pit foundation for adding an elevator to an existing multi-storey house relates to the technical field of elevator pit foundations, and comprises a shed type foundation, an elevator shaft base, a connecting plate and a vibration reduction structure, the shed type foundation comprises a foundation bottom plate, the rear end of the foundation bottom plate and the bottom of the front edge of a residential building are poured into a whole, and a top plate structure is arranged above the foundation bottom plate; multiple sets of steel pipe structures arranged in a matrix mode penetrate between the top plate structure and the foundation bottom plate, the bottom ends of the steel pipe structures are inserted into soil in front of a residential building, elevator shaft bases are fixedly arranged at the positions, opposite to all unit openings, of the upper surface of the top plate structure, and a connecting plate is integrally formed at the rear end of the top plate structure. A vibration reduction structure is connected between the connecting plate and the outer surface of the residential building, and the pit foundation forms a reinforcing structure of the existing residential building through the connecting plate and the vibration reduction structure. According to the elevator shaft foundation, the structural strength of the elevator shaft foundation can be improved, the residential building is reinforced, convenience is provided for residents, and meanwhile popularization of elevator installation outside the residential building is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of elevator pit foundations, and in particular to a prefabricated and assembled steel structure pit foundation for installing an elevator in an existing multi-story residential building. Background Art

[0002] Patent document CN209066475U discloses a prefabricated steel structure pit foundation for adding an elevator to an existing multi-story residential building, which relates to an elevator pit foundation. A foundation pedestal is arranged on the top of the foundation pipe pile, and a steel structure pit frame is fixed on the upper surface of the foundation pedestal. The steel structure pit frame includes an integrated cross reinforcement beam, four steel pipe columns, four pit upper cross beams and four pit lower cross beams. The four steel pipe columns are rectangular, and the upper ends of every two adjacent steel pipe columns are connected and fixed by an upper pit cross beam, and the middle of every two adjacent steel pipe columns is connected and fixed by a pit lower cross beam. The cross reinforcement beam is horizontally fixed between the four pit lower cross beams, and a bottom plate is formed between the cross reinforcement beam and the four pit lower cross beams. A buffer base is fixedly installed at the center of the upper surface of the cross reinforcement beam. This new construction is convenient, and the steel structure pit frame is arranged at the door entrance of the unit of the existing multi-story residential building, which saves costs. However, the patent also has the following defects:

[0003] 1. The steel structure pit frame is a cubic structure. Although it has a certain structural stability, its stability is tested after the elevator shaft is installed on top of it due to the substantial increase in load.

[0004] 2. There are certain safety risks in driving pipe piles in front of old buildings. The reason is that the structure of old buildings is fragile, and the vibration caused by pile driving may have an adverse effect on the foundation and structure of the building.

[0005] 3. Although the base plate is suspended above the unit door and the residents pass under the base plate, it does not provide additional convenience for the residents who do not want to install an elevator. Instead, it reduces the space for residents to travel, which is not conducive to the promotion and use of outdoor elevator installation.

[0006] 4. This technical solution is only designed for a single unit door and lacks an overall design for the entire building. There is much room for improvement in improving the stability and safety of the elevator shaft.

[0007] 5. This new type can only be installed in elevator shafts, but cannot be used to reinforce existing residential buildings.

[0008] 6. This new type of device cannot improve the living environment for residents in residential buildings. Utility Model Content

[0009] The present invention provides a prefabricated and assembled steel structure pit foundation for installing an elevator in an existing multi-story residential building, with the aim of solving the problems described in the background technology section 1-6. To solve the above problems, the present invention is designed for all units of the entire residential building, and a technical idea of ​​a shed-type foundation is proposed. The shed-type foundation can be used as a base for installing an elevator shaft, and can also be used as another form of renovation of old residential areas. It can be used as a public welfare facility, and can also be used as a uniformly planned charging facility. While providing convenience for the residents of the entire building, it is conducive to the installation and promotion of outdoor elevators.

[0010] To achieve the above purpose, the technical solution of this novel invention is:

[0011] A prefabricated and assembled steel structure pit foundation for adding an elevator to an existing multi-story residential building, comprising a shed-type foundation, an elevator shaft base, a connecting plate, and a vibration-damping structure. The shed-type foundation comprises a foundation slab fixedly cast in front of the residential building, the rear end of the foundation slab being cast as one piece with the bottom of the front edge of the residential building, a top plate structure being arranged above the foundation slab, a plurality of groups of steel pipe structures arranged in a matrix being passed through between the top plate structure and the foundation slab, the bottom end of the steel pipe structure being inserted into the soil in front of the residential building, an elevator shaft base being fixedly provided on the upper surface of the top plate structure at a position opposite to each unit opening, a connecting plate being integrally formed with the rear end of the top plate structure, a vibration-damping structure being connected between the connecting plate and the outer surface of the residential building, and the pit foundation constitutes a reinforcement structure of the existing residential building through the connecting plate and the vibration-damping structure.

[0012] Preferably, side stairs are respectively connected between the two ends of the top plate structure and the foundation bottom plate, and the side stairs are steel structure stairs or escalators.

[0013] Preferably, the roof structure and the base slab are connected to form a multifunctional living area of ​​the existing residential building by configuring infrastructure.

[0014] Preferably, the side staircase is an escalator, and the outer edges of the upper ends of the top plate structure and the connecting plate are provided with guardrails, and the upper surfaces of the top plate structure and the connecting plate are coplanar and constitute a leisure area.

[0015] Preferably, a gap is provided between the connecting plate and the outer surface of the residential building, the vibration reduction structure is a foam concrete plate cast in the gap, the connecting plate is a reinforced concrete structure cast with a steel structure skeleton, the top plate structure is welded with steel plates, and the top plate structure is welded to the steel structure skeleton.

[0016] Preferably, handrails are provided on both sides of the connection plate facing the corner window of the stairs in the residential building.

[0017] Preferably, a corbel structure is connected between the outer wall of the steel pipe structure and the lower end of the top plate structure, and the corbel structure is supported on the lower end of the top plate structure below the base of the elevator shaft.

[0018] Preferably, a pulling steel plate is connected between the tube wall of the steel tube structure located above the top plate structure and the side wall of the elevator shaft base.

[0019] Preferably, carbon fiber concrete is poured inside the steel pipe structure.

[0020] Preferably, the foundation slab is a reinforced concrete structure, the thickness of the foundation slab is 30-50 cm, and the top plate structure and the elevator shaft base are both made of steel.

[0021] This novel prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building has the following beneficial effects:

[0022] This new model is designed uniformly for the entire residential building, which can significantly improve the structural strength and stability of the steel structure pit foundation, and provide a safe guarantee for the installation of the elevator shaft. At the same time, the steel structure pit foundation of this new model itself also constitutes a reinforced structure of the residential building, which provides powerful help for the problem of insufficient structural strength of old residential buildings, helps to extend the service life of residential buildings, and ensures structural safety. The foundation bottom plate and the top plate structure of the new shed-type foundation form a multi-functional living area, and the top plate structure and the upper end of the connecting plate constitute a leisure area. While providing convenience for residents, the cost can be recovered in the form of fees. With the unification of residents' opinions, the installation of the elevator shaft can be further carried out. Through the above design, this new model not only reconciles the contradictions between residents regarding the installation of elevators, but also helps to promote the use of elevators outside residential buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , a front view structural diagram of the present invention;

[0024] Figure 2 , a top view of the structural relationship between the new residential building and the foundation slab;

[0025] Figure 3 , a top view of the structural relationship between the new residential building and the roof structure;

[0026] Figure 4 , a schematic diagram of the structure of the novel roof structure viewed from above;

[0027] 1. Residential building; 2. Single door; 3. Stair corner window; 4. Elevator shaft base; 5. Top plate structure; 6. Side staircase; 7. Foundation slab; 8. Steel pipe structure; 9. Corbel structure; 10. Pull steel plate; 11. Connecting plate; 12. Handrail; 13. Gap; 14. Vibration reduction structure; 15. Guardrail. DETAILED DESCRIPTION

[0028] The following is a detailed description of the implementation method of the present invention in a step-by-step manner. The description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only used to describe the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0030] The following embodiments may be understood as explaining part of the structure of the present invention individually, or may be understood as a combination of multiple embodiments to illustrate the structure of the present invention in a wider range.

[0031] Example 1

[0032] A prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building, such as Figure 1-4 As shown, it includes a shed foundation, an elevator shaft base 4, a connecting plate 11, and a vibration reduction structure 14. The shed foundation includes a foundation bottom plate 7 fixedly cast in front of the residential building 1, and the rear end of the foundation bottom plate 7 is cast as a whole with the bottom of the front edge of the residential building 1, thereby realizing the preliminary reinforcement of the residential building 1;

[0033] A top plate structure 5 is provided above the foundation slab 7, and a plurality of groups of steel pipe structures 8 arranged in a matrix are passed through the top plate structure 5 and the foundation slab 7. The bottom end of the steel pipe structure 8 is inserted into the soil in front of the residential building 1, and an elevator shaft base 4 is fixedly provided on the upper surface of the top plate structure 5 at a position opposite to each unit opening, for supporting and installing the elevator shaft. A connecting plate 11 is integrally formed at the rear end of the top plate structure 5, and a vibration reduction structure 14 is connected between the connecting plate 11 and the outer surface of the residential building 1. The pit foundation constitutes a reinforcement structure of the existing residential building 1 through the connecting plate 11 and the vibration reduction structure 14, and this is a secondary reinforcement of the residential building.

[0034] Example 2

[0035] like Figure 1 , 3 As shown in 4, side stairs 6 are respectively connected between the two ends of the top plate structure 5 and the foundation bottom plate 7, and the side stairs 6 are steel structure stairs or escalators.

[0036] Example 3

[0037] like Figure 1As shown, the top plate structure 5 and the foundation bottom plate 7 are configured with infrastructure to form a multifunctional living area of ​​the existing residential building 1. The multifunctional living area can be equipped with public welfare facilities, such as sports facilities, and a charging area can also be set, such as stall rental, electric vehicle parking charges, etc. The additional cost of the shed foundation can be recovered through the charging area, and the public welfare facilities can provide living convenience for the residents of the residential building. The problem of installing elevators outside the residential building has always been the focus of contradictions for many residents. Some residents on the lower floors are unwilling to install elevators, while some residents are eager to install elevators. The new model reserves an elevator shaft base 4 on the top plate structure. For units with consistent opinions, elevators can be installed, and for units with temporarily inconsistent opinions, elevators can be temporarily not installed. When the residents of the unit grow older or agree on other situations, they can be installed. When the elevator is installed again, the extra time cost can be recovered to a certain extent through charging.

[0038] Example 4

[0039] like Figure 1 As shown, the side staircase 6 is an escalator, which is convenient for the elderly to go up and down. The top plate structure 5 and the upper outer edge of the connecting plate 11 are provided with a guardrail 15. The upper surfaces of the top plate structure 5 and the connecting plate 11 are coplanar and form a leisure area for the elderly to relax and entertain.

[0040] Example 5

[0041] like Figure 3 As shown, there is a gap 13 between the connecting plate 11 and the outer surface of the residential building 1, and the vibration reduction structure 14 is a foam concrete plate cast in the gap 13. When a large vibration or shock occurs, the shed foundation can reduce vibration and energy consumption for the old residential building through the vibration reduction structure 14 to protect the safety of the residential building; the connecting plate 11 is a reinforced concrete structure cast by a steel structure skeleton, and the top plate structure 5 is welded by steel plates, and the top plate structure 5 is welded to the steel structure skeleton. The top plate structure 5 and the elevator shaft base 4 can be prefabricated in the factory, and the steel pipe structure 8 and the foundation bottom plate 7 are cast on site.

[0042] like Figure 1 , 3 As shown, handrails 12 are provided on both sides of the connecting plate 11 facing the corner window 3 of the stairs in the residential building 1 to facilitate the elderly to enter and exit.

[0043] Example 6

[0044] like Figure 1 , 4 As shown, a corbel structure 9 is connected between the outer wall of the steel pipe structure 8 and the lower end of the top plate structure 5 , and the corbel structure 9 is lifted on the lower end of the top plate structure 5 below the elevator shaft base 4 .

[0045] like Figure 1 , 3 As shown, a pulling steel plate 10 is connected between the pipe wall of the steel pipe structure 8 located above the top plate structure 5 and the side wall of the elevator shaft base 4.

[0046] In this embodiment, through the above arrangement, the supporting strength of the elevator shaft base 4 can be improved to ensure smooth installation and use of the subsequent elevator shaft.

[0047] Example 7

[0048] like Figure 1-4 As shown, carbon fiber concrete is poured inside the steel pipe structure 8 to further enhance the structural strength of the shed foundation.

[0049] like Figure 1 As shown, the foundation slab 7 is a reinforced concrete structure, the thickness of the foundation slab 7 is 30-50 cm, and the top plate structure 5 and the elevator shaft base 4 are both made of steel materials.

[0050] Through the above arrangement, the present invention makes a unified design for the entire residential building, which can significantly improve the structural strength and stability of the steel structure pit foundation and provide a safe guarantee for the installation of the elevator shaft. At the same time, the steel structure pit foundation of the present invention itself also constitutes a reinforced structure of the residential building, which provides powerful help for the problem of insufficient structural strength of old residential buildings, helps to extend the service life of residential buildings and ensures structural safety. The foundation bottom plate and the top plate structure of the shed-type foundation of the present invention form a multifunctional living area, and the top plate structure and the upper end of the connecting plate form a leisure area. While providing convenience for the residents, the cost can be recovered in the form of fees. With the unification of the residents' opinions, the installation of the elevator shaft can be further carried out. Through the above design, the present invention not only reconciles the contradictions between residents regarding the installation of elevators, but also helps to promote the use of elevators outside residential buildings.

Claims

1. A prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building, characterized by: It includes a shed-type foundation, an elevator shaft base, a connecting plate, and a vibration-damping structure. The shed-type foundation includes a foundation bottom plate fixedly cast in front of a residential building, the rear end of the foundation bottom plate is cast as a whole with the bottom of the front edge of the residential building, a top plate structure is provided above the foundation bottom plate, a plurality of groups of steel pipe structures arranged in a matrix are penetrated between the top plate structure and the foundation bottom plate, the bottom end of the steel pipe structure is inserted into the soil in front of the residential building, an elevator shaft base is fixedly provided on the upper surface of the top plate structure at a position opposite to each unit opening, a connecting plate is integrally formed with a connecting plate at the rear end of the top plate structure, a vibration-damping structure is connected between the connecting plate and the outer surface of the residential building, and the pit foundation constitutes a reinforcement structure of the existing residential building through the connecting plate and the vibration-damping structure.

2. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 1 is characterized by: Side stairs are respectively connected between the two ends of the top plate structure and the foundation bottom plate, and the side stairs are steel structure stairs or escalators.

3. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 2 is characterized by: The top plate structure and the base plate are connected to form a multifunctional living area of ​​the existing residential building by configuring basic infrastructure.

4. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 3 is characterized by: The side staircase is an escalator, and the outer edges of the upper ends of the top plate structure and the connecting plate are provided with guardrails. The upper surfaces of the top plate structure and the connecting plate are coplanar and form a leisure area.

5. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 4 is characterized by: A gap is provided between the connecting plate and the outer surface of the residential building, the vibration reduction structure is a foam concrete plate cast in the gap, the connecting plate is a reinforced concrete structure cast with a steel structure frame, the top plate structure is welded with steel plates, and the top plate structure is welded to the steel structure frame.

6. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 5 is characterized by: Handrails are respectively arranged on both sides of the connection plate facing the corner window of the stairs in the residential building.

7. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 6 is characterized by: A corbel structure is connected between the outer wall of the steel pipe structure and the lower end of the top plate structure, and the corbel structure is lifted up on the lower end of the top plate structure below the elevator shaft base.

8. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 7 is characterized by: A pulling steel plate is connected between the pipe wall of the steel pipe structure located above the top plate structure and the side wall of the elevator shaft base.

9. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 8, characterized in that: Carbon fiber concrete is poured inside the steel pipe structure.

10. The prefabricated steel structure pit foundation for installing an elevator in an existing multi-story residential building as claimed in claim 9, characterized in that: The foundation slab is a reinforced concrete structure with a thickness of 30-50 cm. The top plate structure and the elevator shaft base are both made of steel.

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