Sliding seismic floor structure for crossing an elevator lobby with a seismic barrier

Abstract

The utility model relates to the technical field of building structure seismic protection, specifically a sliding type seismic ground structure for elevator antechamber crossing shock insulation layer, its including the base raft of elevator antechamber and the reinforced concrete wall of elevator shaft, the outer wall of reinforced concrete wall body is fixed with channel steel support frame, the upper surface of channel steel support frame is welded with horizontal weathering steel plate, the upper surface of horizontal weathering steel plate is paved with ground stone material I, the upper surface of base raft is provided with cushion layer, the upper surface of cushion layer is sequentially provided with combination layer, rubber board, universal sliding support from left to right, the upper end of universal sliding support and the left end lower surface of horizontal weathering steel plate slide contact, and the right end of rubber board and the left end of horizontal weathering steel plate are all wedge-shaped and slide fit, solved the problem that the rigid paving layer hinders the horizontal displacement of elevator shaft room when the earthquake occurs and causes the damage of paving layer of the method of existing suspension shock insulation combined traditional ground paving.

Description

Technical Field

[0001] This utility model relates to the field of seismic protection technology for building structures, specifically a sliding seismic-resistant ground structure for passing through the elevator lobby of the seismic isolation layer. Background Technology

[0002] In the seismic design of high-rise buildings, seismic isolation technology can effectively reduce the transmission of seismic energy to the upper structure. For elevator shafts that pass through the building's seismic isolation layer, suspended seismic isolation technology is currently widely used. This involves isolating the elevator shaft from the foundation through a suspension system, allowing it to undergo relative displacement during an earthquake, thereby protecting the elevator structure.

[0003] However, this method of combining suspension isolation with traditional ground paving has the following obvious drawbacks in practical applications: The suspension system allows the elevator shaft to move horizontally, but the floor paving layer of the elevator lobby connected to it does not take into account the large horizontal displacement that may occur between the isolation layer and the superstructure. It usually adopts a rigid construction process and lacks effective stress release and deformation space construction, which will hinder the horizontal displacement of the elevator shaft. During an earthquake, this structural contradiction will inevitably lead to the pavement layer being torn or crushed, resulting in high subsequent maintenance costs and affecting building operation.

[0004] Therefore, it is necessary to invent a sliding seismic-resistant ground structure for passing through the elevator lobby of the seismic isolation layer to solve the above problems. Utility Model Content

[0005] To address the problem that existing methods combining suspended seismic isolation with traditional ground paving often result in damage to the paving layer due to the rigid paving layer hindering the horizontal displacement of the elevator shaft, this invention provides a sliding seismic-resistant ground structure for elevator lobbies that traverse the seismic isolation layer.

[0006] This utility model is achieved using the following technical solution: A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer includes a foundation raft slab for the elevator lobby and reinforced concrete walls for the elevator shaft. A seismic isolation trench is formed between the reinforced concrete walls and the foundation raft slab. A channel steel support frame is fixed to the outer wall surface of the reinforced concrete walls. A horizontal weathering steel plate mounted on the seismic isolation trench is welded to the upper surface of the channel steel support frame. The upper surface of the horizontal weathering steel plate is paved with ground stone material I. The upper surface of the foundation raft is provided with a pad layer, and from left to right, the upper surface of the pad layer is provided with a bonding layer, a rubber plate, and several universal sliding supports. The right end of the bonding layer is connected to the left end of the rubber sheet. The upper surface of the bonding layer is covered with ground stone II. The top elevation of the rubber sheet, ground stone I, and ground stone II is the same, and the bottom elevation of the rubber sheet and the horizontal weathering steel plate is the same. The upper end of the universal sliding support slides in contact with the lower surface of the left end of the horizontal weathering steel plate, and the right end of the rubber plate and the left end of the horizontal weathering steel plate are both wedge-shaped and slide in fit.

[0007] Furthermore, the channel steel support frame is fixed to the outer wall surface of the reinforced concrete wall by chemical anchors placed inside the reinforced concrete wall, and the chemical anchors and the channel steel support frame are fixed by welding.

[0008] Furthermore, the universal sliding support includes a protective shell, an annular steel ball track is provided on the inner side of the protective shell, a number of auxiliary rolling steel balls are provided in the annular steel ball track, and a universal ball is supported by the number of auxiliary rolling steel balls.

[0009] Furthermore, waterproof sealant is filled between the rubber sheet and the ground stone I, ground stone II, and horizontal weathering steel plate, respectively.

[0010] Furthermore, a water-stopping expansion strip is provided on the side wall of the pad layer located below the rubber plate, and between the right end of the bonding layer and the left end of the rubber plate.

[0011] Furthermore, the cushion layer is a fine aggregate concrete cushion layer.

[0012] Furthermore, the bonding layer is a dry-hardened cement mortar layer.

[0013] Furthermore, the rubber sheet is a high-strength, weather-resistant rubber sheet.

[0014] This utility model features a reasonable and reliable structural design. By combining a universal sliding support with a horizontal weathering steel plate, the forced rigid displacement between the foundation raft slab and the superstructure during an earthquake is transformed into free sliding of the steel plate on the universal sliding support. This completely eliminates the tensile and compressive stress on the rigid pavement layer, thus solving the problem of the rigid pavement layer hindering the horizontal displacement of the elevator shaft and causing damage to the pavement layer in existing methods of combining suspension isolation with traditional ground pavement. At the same time, it has low maintenance costs and a long service life, avoiding the high maintenance costs and long-term downtime of large-scale removal and replacement of ground stone, significantly reducing the maintenance cost throughout the entire life cycle. In addition, this ground structure successfully guides the displacement to a preset deformation path, preventing broken pavement material debris from falling and clogging the isolation trench, ensuring the normal operation and safe use of the building's overall seismic isolation system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of the present invention.

[0017] In the diagram: 1. Foundation raft slab; 2. Reinforced concrete wall; 3. Horizontal weathering steel plate; 4. Ground stone I; 5. Subbase; 6. Bonding layer; 7. Rubber sheet; 8. Ground stone II; 11. Channel steel support frame; 12. Surround weld; 13. Chemical anchor; 15. Protective shell; 16. Auxiliary rolling steel ball; 17. Universal ball; 18. Waterproof sealant; 19. Water-stop expansion strip; 20. Elevator door opening. Detailed Implementation

[0018] A sliding seismic-resistant ground structure for passing through the elevator lobby of the seismic isolation layer, as shown in the attached figure. Figure 1 ~Appendix Figure 2 As shown, the structure includes a foundation raft slab 1 for the elevator lobby and a reinforced concrete wall 2 for the elevator shaft. An elevator door opening 20 is provided on the reinforced concrete wall 2. A seismic isolation trench is formed between the reinforced concrete wall 2 and the foundation raft slab 1. A channel steel support frame 11 is fixed to the outer wall surface of the reinforced concrete wall 2. A horizontal weathering steel plate 3, which is erected on the seismic isolation trench, is welded to the upper surface of the channel steel support frame 11. The upper surface of the horizontal weathering steel plate 3 is covered with ground stone I 4. The upper surface of the foundation raft 1 is provided with a pad 5, and the upper surface of the pad 5 is provided with a bonding layer 6, a rubber plate 7, and several universal sliding supports from left to right. The right end of the bonding layer 6 is connected to the left end of the rubber plate 7. The upper surface of the bonding layer 6 is covered with ground stone II 8. The top elevation of the rubber plate 7, ground stone I 4, and ground stone II 8 is the same, and the bottom elevation of the rubber plate 7 and the horizontal weathering steel plate 3 is the same. The upper end of the universal sliding support slides in contact with the lower surface of the left end of the horizontal weathering steel plate 3, and the right end of the rubber plate 7 and the left end of the horizontal weathering steel plate 3 are both wedge-shaped and slide in fit.

[0019] The channel steel support frame 11 is fixed to the outer wall surface of the reinforced concrete wall 2 by chemical anchors 13 placed inside the reinforced concrete wall 2, and the chemical anchors 13 and the channel steel support frame 11 are fixed by welding.

[0020] The universal sliding support includes a protective shell 15, an annular steel ball track is provided on the inner side of the protective shell 15, and a number of auxiliary rolling steel balls 16 are provided in the annular steel ball track. A universal ball 17 is supported by the number of auxiliary rolling steel balls 16.

[0021] The rubber sheet 7 is filled with waterproof sealant 18 between itself and the ground stone I 4, the ground stone II 8, and the horizontal weathering steel plate 3.

[0022] Water-stopping expansion strips 19 are provided on the side wall of the padding layer 5 located below the rubber plate 7, and between the right end of the bonding layer 6 and the left end of the rubber plate 7.

[0023] The cushion layer 5 is a fine aggregate concrete cushion layer.

[0024] The bonding layer 6 is a dry-hardened cement mortar layer.

[0025] The rubber sheet 7 is a high-strength, weather-resistant rubber sheet.

[0026] The core design feature of this utility model lies in the creative integration of rigid support, omnidirectional sliding, and flexible deformation to form a system that can actively adapt to seismic displacement. Its structural features and working principle are as follows: First, this sliding seismic-resistant ground structure effectively suspends the ground load of the elevator shaft and its anteroom side onto the reinforced concrete wall 2 via the channel steel support frame 11 and the horizontal weathering steel plate 3, thus separating it from the foundation raft slab 1, which may move with the foundation. The far end of the horizontal weathering steel plate 3, i.e., the left end, is not fixed but supported on several universal sliding supports. These universal sliding supports consist of a protective shell 15, auxiliary rolling steel balls 16, and universal balls 17, forming a low-friction ball bearing structure. This allows the horizontal weathering steel plate 3 and the ground stone I4 on it to bear load stably under normal conditions, while during an earthquake, they can slide freely horizontally in multiple directions on the top of the universal balls 17 with the movement of the foundation, thereby releasing the huge horizontal stress generated by the displacement of the seismic isolation layer and fundamentally avoiding the extrusion, heave, or tensile damage of the pavement layer.

[0027] Secondly, this sliding seismic-resistant ground structure features a flexible pavement strip composed of rubber sheets 7 between the right-side sliding zone and the left-side fixed pavement zone. Its unique feature lies in the fact that the adjacent ends of both the rubber sheets 7 and the horizontal weathering steel plate 3 are machined into complementary wedge-shaped sections. This design constitutes an ingenious stress-guiding mechanism: when an earthquake occurs and the horizontal weathering steel plate 3 slides to the left, its wedge-shaped end naturally inserts into the flexible rubber sheet 7, guiding the overlying ground stone I4 to transition smoothly, rather than with a hard impact. During this process, the rubber sheet 7 undergoes compressive deformation, further absorbing displacement energy and protecting the integrity of the ground stone I4.

[0028] Furthermore, this sliding seismic-resistant ground structure fully considers the protection of sliding and deformation mechanisms. Under normal use, the waterproof sealant 18 forms the first waterproof barrier between the rubber sheet 7 and the gaps between the ground stone I 4, the ground stone II 8, and the horizontal weathering steel plate 3. If the waterproof sealant 18 fails due to an earthquake, the water-stopping expansion strip 19 embedded at the junction of the bonding layer 6 and the rubber sheet 7, and located on the side wall of the pad 5 below the rubber sheet 7, will expand upon contact with water, forming a second effective waterproof line to prevent water and impurities from penetrating the underlying pad 5, ensuring the long-term reliable operation of critical moving parts.

[0029] During construction and installation, the foundation raft slab 1 is constructed first, and a pad layer 5 is poured on the foundation raft slab 1. Universal sliding supports are pre-installed on the pad layer 5 at the design position below the free end of the horizontal weathering steel plate 3. After the concrete of the reinforced concrete wall 2 is poured and reaches the design strength, the channel steel support frame 11 is fixed at the design elevation position on the outside of the wall using chemical anchors 13. Simultaneously, the chemical anchors 13 and the channel steel support frame 11 are fixed together by perimeter welding, forming a perimeter weld 12 at the connection point. Then, the horizontal weathering steel plate 3... Welded to the upper surface of the channel steel support frame 11, its free end is accurately supported on the top of the universal ball 17; then, a rubber sheet 7 is laid on the pad 5, ensuring that its bottom elevation is consistent with the horizontal weathering steel plate 3, and the adjacent ends are processed into complementary wedges; next, the ground stone I4 is laid on the horizontal weathering steel plate 3, and the bonding layer 6 and ground stone II8 are laid on the pad 5 in the area of ​​the foundation raft 1; finally, waterproof sealant 18 is filled at the joints of the rubber sheet 7 with the ground stone I4, the ground stone II8, and the horizontal weathering steel plate 3 respectively.

[0030] When an earthquake occurs, the foundation raft 1 shifts with the ground movement, causing the universal sliding bearings supporting it to move accordingly. The waterproof sealant 18 breaks and fails, and the universal sliding bearings slide relative to the horizontal weathering steel plate 3 and the ground stone I4 it supports. The wedge-shaped end of the horizontal weathering steel plate 3 slides under the flexible rubber sheet 7, guiding the ground stone I4 through a smooth transition. The rubber sheet 7 undergoes elastic deformation to accommodate this displacement. This process releases stress, ensuring the integrity of the ground paving and the normal operation of the elevator. After the earthquake, the waterproof sealant 18 can be inspected and repaired.

[0031] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer, comprising a foundation raft slab (1) of the elevator lobby and reinforced concrete walls (2) of the elevator shaft, wherein a seismic isolation trench is formed between the reinforced concrete walls (2) and the foundation raft slab (1), characterized in that: The outer wall surface of the reinforced concrete wall (2) is fixed with a channel steel support frame (11), and a horizontal weathering steel plate (3) erected on the seismic isolation trench is welded to the upper surface of the channel steel support frame (11). The upper surface of the horizontal weathering steel plate (3) is paved with ground stone material I (4). The upper surface of the foundation raft (1) is provided with a pad (5), and the upper surface of the pad (5) is provided with a bonding layer (6), a rubber plate (7), and several universal sliding supports from left to right. The right end of the bonding layer (6) is connected to the left end of the rubber plate (7). The upper surface of the bonding layer (6) is covered with ground stone II (8). The top elevations of the rubber plate (7), ground stone I (4), and ground stone II (8) are consistent. The bottom elevations of the rubber plate (7) and the horizontal weathering steel plate (3) are consistent. The upper end of the universal sliding support slides in contact with the lower surface of the left end of the horizontal weathering steel plate (3), and the right end of the rubber plate (7) and the left end of the horizontal weathering steel plate (3) are both wedge-shaped and slide in fit.

2. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: The channel steel support frame (11) is fixed to the outer wall surface of the reinforced concrete wall (2) by chemical anchors (13) placed inside the reinforced concrete wall (2), and the chemical anchors (13) and the channel steel support frame (11) are fixed by welding.

3. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: The universal sliding support includes a protective shell (15), and an annular steel ball track is provided on the inner side of the protective shell (15). Several auxiliary rolling steel balls (16) are provided in the annular steel ball track, and a universal ball (17) is supported by several auxiliary rolling steel balls (16).

4. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: The rubber sheet (7) is filled with waterproof sealant (18) between itself and the ground stone I (4), the ground stone II (8), and the horizontal weathering steel plate (3).

5. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: Water-stopping expansion strips (19) are provided on the side wall of the pad (5) located below the rubber plate (7) and between the right end of the bonding layer (6) and the left end of the rubber plate (7).

6. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: The cushion layer (5) is a fine stone concrete cushion layer.

7. A sliding seismic-resistant ground structure for an elevator vestibule passing through a seismic isolation layer according to claim 1, characterized in that: The bonding layer (6) is a dry-hardened cement mortar layer.

8. A sliding seismic-resistant ground structure for an elevator lobby passing through a seismic isolation layer according to claim 1, characterized in that: The rubber sheet (7) is a high-strength weather-resistant rubber sheet.

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