A vibration isolation building horizontal force transfer device

Abstract

The application relates to a horizontal force transmission device for a vibration isolation building, belonging to the technical field of civil engineering, and aims to solve the problems of the existing horizontal force transmission device for an underground structure. The horizontal force transmission device comprises a mirror stainless steel plate and a steel box, the mirror stainless steel plate is provided with a plurality of inner anchor bars on one side, the mirror stainless steel plate is provided with a sliding block group on the other side, the steel box is provided with a plurality of outer anchor bars on one side, the steel box is provided with a notch on the other side, the notch is provided with a retainer, the retainer is oppositely arranged with the stainless steel plate, vertical sliding grooves and a plurality of ball-shaped notches are arranged on the end surface of the side of the retainer facing the stainless steel plate, a plurality of balls are correspondingly arranged in the plurality of notches in a rolling mode, the plurality of balls are in rolling abutment with the stainless steel plate, the sliding block group is in sliding cooperation with the sliding groove group, the inner anchor bars are pre-buried in the edge beam, and the outer anchor bars are pre-buried in the outer wall. The outer force transmission element and the inner force transmission element are allowed to vertically slide, horizontal force transmission can be realized, and the vibration reduction and isolation effect of the vibration isolation system is not affected.

Description

Technical Field

[0001] This invention belongs to the field of civil engineering technology, and in particular relates to a horizontal force transmission device for vibration-isolated buildings. Background Technology

[0002] In recent years, my country's subway network has been expanding, bringing convenience to residents while also highlighting the growing impact of environmental vibrations from subway operation on surrounding buildings. To address this, more and more projects are adopting integrated vibration isolation methods. This involves installing vibration isolation layers on the foundation, essentially floating the entire building on the isolation system to block most of the vertical vibrations and effectively control the vibrations caused by the subway.

[0003] The overall vibration isolation method requires a complete disconnect between the underground structure and the basement exterior walls, which leads to the following problems in current vibration-isolated buildings (including basements) that urgently need to be addressed:

[0004] 1) The water and soil pressure borne by the basement exterior wall cannot be transmitted to the underground structure. To ensure safety, it is usually designed as a cantilever exterior wall. This leads to a significant increase in the thickness of the exterior wall, and the construction cost and construction difficulty will also increase exponentially. Especially for projects with two or more basements in soft soil areas, there are very few relevant cases.

[0005] 2) Under seismic conditions, the underground structure of a conventional vibration-isolated building is completely disconnected from the basement exterior wall, which will result in a significant reduction in the horizontal stiffness of the underground structure. The overall seismic resistance is far lower than that of a non-vibration-isolated building, which is very detrimental to the safety and stability of the building.

[0006] 3) Some projects install flexible pads (polyurethane or rubber), shear hinges, or horizontally placed vibration isolation supports between the underground structure and the basement exterior wall. However, these conventional devices will restrict the vertical displacement of the underground structure to a certain extent, directly affecting the vibration reduction and isolation effect of the vibration isolation system and failing to meet the functional requirements of the building. Summary of the Invention

[0007] The purpose of this invention is to provide a horizontal force transmission device for vibration-isolated buildings to solve the aforementioned technical problems. Without affecting the vibration reduction and isolation effect of the vibration-isolated building, it achieves horizontal force transmission between the basement exterior wall and the underground structure, thereby improving the seismic performance of the vibration-isolated building and ensuring its safety and stability. The technical solution adopted by this invention is as follows:

[0008] A vibration isolation building horizontal force transmission device. The building is a multi-story building. Each floor of the building consists of a structural slab and a structural beam arranged up and down to form a floor. A vibration isolation support is provided at the bottom of the underground structure of the building. An outer wall is provided on the outer periphery of the underground structure of the building. A side beam is provided on the outer periphery of the floor of the underground structure. A number of the horizontal force transmission devices are provided between the side beam and the outer wall. The horizontal force transmission device includes an outer force transmission member and an inner force transmission member. The inner force transmission member includes a mirror stainless steel plate. A number of inner anchor bars are provided on one side of the mirror stainless steel plate. A slider group is provided on the other side of the mirror stainless steel plate. The outer force transmission member includes a steel box. A number of outer anchor bars are provided on one side of the steel box. A notch is provided on the other side of the steel box. A cage is provided in the notch. The cage is arranged opposite to the stainless steel plate. A vertical chute group and a number of spherical segment-shaped notches are provided on the end face of the cage facing the stainless steel plate. A number of ball bearings are arranged in a rolling manner in a number of the notches respectively. A number of ball bearings are all in rolling contact with the stainless steel plate. And the slider group is in sliding fit with the chute group. The inner anchor bars are embedded in the side beam. The outer anchor bars are embedded in the outer wall.

[0009] Further, the slider group includes two vertically penetrating chutes arranged horizontally. A lubricating layer is embedded on the surface of the vertically penetrating chute. The slider group includes two slider bodies arranged horizontally. The two slider bodies are in sliding fit with the lubricating layers of the two vertically penetrating chutes respectively.

[0010] Further, the lubricating layer is a tetrafluoroethylene material layer, a modified polytetrafluoroethylene material layer, a modified ultra-high molecular weight polyethylene material layer, a stainless steel material layer or a graphite material layer.

[0011] Further, the contour of the mirror stainless steel plate is within the contour of the cage.

[0012] Further, the upper end of the steel box is aligned with the upper end of the side beam, and the lower end of the steel box is aligned with the lower end of the side beam.

[0013] Further, the steel box includes a vertical plate part, an upper plate part, a lower plate part, a partition part, a rib part and a cushion plate part. The upper plate part, the vertical plate part and the lower plate part are connected in sequence to form a straight groove body with a "匚" - shaped cross section. The two partition parts divide the inside of the straight groove body into three installation spaces. A cushion plate part parallel to the vertical plate part is provided in the middle installation space. The cushion plate part is connected to the vertical plate part through a number of rib parts. The four sides of the cushion plate part are connected to the upper plate part, the lower plate part and the two partition parts respectively. The ends of the upper plate part, the lower plate part and the partition part背离 the vertical plate part are flush and enclose to form the notch.

[0014] Further, the thickness of the cage is adaptively selected according to the actual installation distance between the cushion plate part and the stainless steel plate.

[0015] Further, jacks are provided in both of the installation spaces on both sides.

[0016] Furthermore, limiting blocks are also provided in the installation spaces on both sides.

[0017] Furthermore, the limiting block is a reinforced concrete component or a high-strength grouting material component.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The horizontal force transmission device of the present invention is symmetrically arranged around the perimeter of the building between the outer wall and the edge beam of the underground structure. One side is fixed to the outer wall by the outer anchor bar, and the other side is fixed to the edge beam by the inner anchor bar. It can effectively transmit the water and soil pressure borne by the basement outer wall to the underground structure. Compared with the conventional cantilever outer wall scheme, the thickness of the outer wall can be greatly reduced, and the construction cost is significantly reduced.

[0020] 2. This invention can effectively achieve horizontal force transmission between the basement exterior walls and structural beams and slabs. Compared with conventional vibration isolation buildings, the horizontal stiffness of the underground structure is greatly increased, and the seismic performance is significantly improved. This invention is equipped with a limiting block, which is made of rigid materials such as reinforced concrete and high-strength grouting material. Its compressive strength is not lower than that of the basement structural beam. When the horizontal deformation caused by the earthquake is too large, the limiting block plays a role and makes rigid contact with the underground structure to limit the inter-story displacement of the underground structure and ensure the safety and stability of the building to the greatest extent.

[0021] 3. In this invention, vertical sliding is allowed between the external force transmission component and the internal force transmission component. This enables the external wall to transmit the water and soil pressure it bears to the underground structure without affecting the vibration reduction and isolation effect of the vibration isolation system. The external force transmission component rolls against the mirror stainless steel plate of the internal force transmission component through several balls, and the guide and limiting slider body also contacts the lubrication layer of the corresponding vertical through groove, which greatly reduces sliding friction and has virtually no impact on the vibration reduction and isolation effect of the vibration isolation system, ensuring that the vibration control requirements of the building are met.

[0022] 4. This invention adopts a split design, with the external force transmission component and the internal force transmission component prefabricated separately in the factory, which reduces the processing difficulty; during on-site installation, the two are pre-embedded in stages, and the auxiliary adjustment of the jacks is used to improve the allowable error during installation, making the installation less difficult. Attached Figure Description

[0023] Figure 1 This is a top view of the horizontal force transmission device of the present invention;

[0024] Figure 2 This is a schematic diagram showing the arrangement of the horizontal force transmission device of the present invention in a vibration isolation building.

[0025] Figure 3 This is an elevation view of the application of the horizontal force transmission device of the present invention;

[0026] Figure 4This is an isometric view of the steel box of the present invention;

[0027] Figure 5 Axonometric view of the steel box without the padding plate;

[0028] Figure 6 Axonometric drawing of the cage;

[0029] Figure 7 This is an isometric view of a mirror-finish stainless steel sheet.

[0030] In the diagram, 100-Horizontal force transmission device, 200-Building, 1-External force transmission component, 11-Steel box, 111-Vertical plate, 112-Upper plate, 113-Lower plate, 114-Partition plate, 115-Padded plate, 116-Rib plate, 12-External anchor bar, 13-Ball bearing, 14-Cage, 141-Lubricating layer, 142-Notch, 15-Jack, 16-Limiting block, 2-Internal force transmission component, 21-Mirror stainless steel plate, 22-Internal anchor bar, 23-Sliding block, 3-External wall, 4-Side beam, 5-Structural plate, 6-Structural beam, 7-Vibration isolation support. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolted connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a bolted connection can be chosen for detachable connections.

[0033] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0034] Example: Figures 1 to 7As shown, a horizontal force transmission device for a vibration-isolated building is disclosed. The building 200 is a multi-story building. Each floor of the building 200 is composed of upper and lower structural slabs 5 and structural beams 6. Vibration isolation supports 7 are provided at the bottom of the underground structure of the building 200. An outer wall 3 is provided on the outer perimeter of the underground structure. An edge beam 4 is provided on the outer perimeter of the floor of the underground structure. Several horizontal force transmission devices 100 are provided between the edge beam 4 and the outer wall 5. Each horizontal force transmission device 100 includes an outer force transmission component 1 and an inner force transmission component 2. The inner force transmission component 2 includes a mirror-finished stainless steel plate 21. Several inner anchor bars 22 are provided on one side of the mirror-finished stainless steel plate 21. On the other side of 1, a slider assembly is provided. The external force transmission component 1 includes a steel box 11. A number of external anchor bars 12 are provided on one side of the steel box 11. A slot is provided on the other side of the steel box 11. A retainer 14 is provided in the slot. The retainer 14 is arranged opposite to the stainless steel plate 21. A vertically arranged sliding groove assembly and a number of spherical notches 142 are provided on the end face of the retainer 14 facing the stainless steel plate 21. A number of balls 13 are rolled in the number of notches 142 in a corresponding manner. The balls 13 roll against the stainless steel plate 21. The slider assembly and the sliding groove assembly slide together. The inner anchor bar 22 is embedded in the side beam 4. The outer anchor bar 12 is embedded in the outer wall 3.

[0035] The slider assembly includes two horizontally arranged vertical through grooves, the surface of which is embedded with a lubricating layer 141. The slider assembly includes two horizontally arranged slider bodies 23, which correspond one-to-one with the lubricating layers 141 of the two vertical through grooves and slide in cooperation.

[0036] The lubricating layer 141 is a tetrafluoroethylene material layer, a modified polytetrafluoroethylene material layer, a modified ultra-high molecular weight polyethylene material layer, a stainless steel material layer, or a graphite material layer, in order to reduce the sliding friction coefficient between the lubricating layer and the slider 23.

[0037] The upper end of the steel box 11 is aligned with the upper end of the side beam 4, and the lower end of the steel box 11 is aligned with the lower end of the side beam 4, so that the horizontal force transmission device 100 is set according to the size of the side beam 4, so as to maximize the function of the horizontal force transmission device 100 and avoid over-design.

[0038] The steel box 11 includes a vertical plate portion 111, an upper plate portion 112, a lower plate portion 113, a partition portion 114, a rib portion 116 and a backing plate portion 115. The upper plate portion 112, the vertical plate portion 111 and the lower plate portion 113 are connected in sequence to form a straight groove body with a "C" - shaped cross - section. The two partition portions 114 divide the interior of the straight groove body into three installation spaces. A backing plate portion 115 parallel to the vertical plate portion 111 is provided in the middle installation space. The backing plate portion 115 is connected to the vertical plate portion 111 through a number of rib portions 116. The four sides of the backing plate portion 115 are respectively connected to the upper plate portion 112, the lower plate portion 113 and the two partition portions 114 correspondingly. The ends of the upper plate portion 112, the lower plate portion 113 and the partition portion 114背离 the vertical plate portion 111 are flush and enclose to form the groove opening.

[0039] A number of ball bearings 13 protrude from the groove opening, leaving a gap between the mirror - polished stainless steel plate 21 and the steel box 11, ensuring that when the mirror - polished stainless steel plate 21 slides relative to the cage 14, the mirror - polished stainless steel plate 21 will not be restricted or interfered by the steel box 11.

[0040] The thickness of the cage 14 is selected according to the actual installation distance between the backing plate portion 115 and the stainless steel plate 21.

[0041] The mirror - polished stainless steel plate 21 is within the width range of the backing plate portion 115, so that there are no obstacles between the two installation spaces on both sides and the corresponding side beams 4. Thus, jacks 15 can be installed in both installation spaces on both sides. The jacks 15 are used to support between the steel box 11 and the side beam 4 when installing the horizontal force - transfer device 100. Start the jacks 15 and adjust them to the appropriate length according to the distance between the exterior wall 3 and the side beam 4. After the horizontal force - transfer device 100 is installed, retract the jacks 15 to facilitate the installation of the external force - transmitting member 1 and the internal force - transmitting member 2.

[0042] Limit blocks 16 are also provided in the two installation spaces on both sides.

[0043] The limit blocks 16 are reinforced concrete members or high - strength grout members, and their compressive strength is not lower than that of the structural beam 6. The limit blocks 16 are cast - in - place and fixed on the steel box 11.

[0044] Under normal circumstances, the limit blocks 16 do not contact the side beam 4 and the internal transmission member 2. When the horizontal vibration is too large and the mirror - polished stainless steel plate 21 squeezes the cage 14 and causes it to deform and fail, the limit blocks 16 are used to support the side beam 4 to prevent the building 200 from moving horizontally.

[0045] The external force - transmitting member 1 and the internal force - transmitting member 2 can be pre - fabricated and assembled in the factory respectively, which can reduce the construction period on site. The thickness dimension of the cage 14 is adjustable to adapt to different distances between the exterior wall 3 and the side beam 4.

[0046] The horizontal force transmission device 100 of the present invention is symmetrically arranged around the perimeter of the building 200 between the outer wall 3 and the edge beam 4 of the underground structure. One side is fixed to the outer wall 3 by the outer anchor bar 12, and the other side is fixed to the edge beam 4 by the inner anchor bar 22. It can effectively transmit the water and soil pressure borne by the basement outer wall 3 to the underground structure. Compared with the conventional cantilever outer wall scheme, the thickness of the outer wall 3 can be greatly reduced, and the construction cost is significantly reduced.

[0047] This invention can effectively achieve horizontal force transmission between the basement exterior wall 3 and the structural beam 6 and structural slab 5. Compared with conventional vibration isolation buildings, the horizontal stiffness of the underground structure is greatly increased, and the seismic performance is significantly improved. The invention is equipped with a limiting block 16, which is made of rigid materials such as reinforced concrete and high-strength grouting material. Its compressive strength is not lower than that of the basement structural beam 6. When the horizontal deformation caused by the earthquake is too large, the limiting block 16 plays a role and makes rigid contact with the underground structure to limit the inter-story displacement of the underground structure and ensure the safety and stability of the building 200 to the greatest extent.

[0048] In this invention, vertical sliding is allowed between the external force transmission component 1 and the internal force transmission component 2. This allows the external wall 3 to transmit the water and soil pressure it bears to the underground structure without restricting the vertical displacement of the underground structure, thus avoiding affecting the vibration reduction and isolation effect of the vibration isolation system. The external force transmission component 1 rolls against the mirror stainless steel plate 21 of the internal force transmission component 2 through several balls 13, and the guide and limiting slider 23 also contacts the lubrication layer 141 of the corresponding vertical through groove, which greatly reduces sliding friction and has virtually no impact on the vibration reduction and isolation effect of the vibration isolation system, ensuring that the vibration control requirements of the building are met.

[0049] This invention adopts a split design, with the external force transmission component 1 and the internal force transmission component 2 prefabricated separately in the factory, which reduces the processing difficulty; during on-site installation, the two are pre-embedded in stages, and the auxiliary adjustment of the jack 15 is used to improve the allowable error during installation, making the installation less difficult.

[0050] The above embodiments are merely illustrative examples of the present invention and do not limit its scope of protection. Those skilled in the art can make partial changes to them, as long as they do not exceed the spirit and essence of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A horizontal force transmission device for a vibration-isolated building, wherein the building (200) is a multi-story building, each floor of the building (200) is composed of upper and lower structural slabs (5) and structural beams (6), the bottom of the underground structure of the building (200) is provided with vibration isolation supports (7), the outer perimeter of the underground structure of the building (200) is provided with an outer wall (3), the outer perimeter of the floor of the underground structure is provided with a side beam (4), and a plurality of the horizontal force transmission devices (100) are provided between the side beam (4) and the outer wall (3), characterized in that: The horizontal force transfer device (100) includes an outer force transfer member (1) and an inner force transfer member (2). The inner force transfer member (2) includes a mirror stainless steel plate (21). On one side of the mirror stainless steel plate (21), there are several inner anchor bars (22). On the other side of the mirror stainless steel plate (21), there is a slider group. The outer force transfer member (1) includes a steel box (11). On one side of the steel box (11), there are several outer anchor bars (12). On the other side of the steel box (11), there is a notch. Inside the notch, there is a cage (14). The cage (14) is arranged opposite to the mirror stainless steel plate (21). On the end face of the cage (14) facing the mirror stainless steel plate (21), there are vertically arranged chute groups and several spherical segment-shaped notches (142). Several balls (13) are respectively and rollingly arranged in several notches (142). Several balls (13) are all in rolling contact with the mirror stainless steel plate (21), and the slider group is in sliding fit with the chute group. The inner anchor bars (22) are embedded in the side beam (4), and the outer anchor bars (12) are embedded in the outer wall (3).

2. The horizontal force transmission device for vibration-isolated buildings according to claim 1, characterized in that: The chute group includes two vertically penetrating chutes arranged horizontally. The surface of the vertically penetrating chutes is embedded with a lubricating layer (141). The slider group includes two slider bodies (23) arranged horizontally. The two slider bodies (23) are respectively and in sliding fit with the lubricating layer (141) of the two vertically penetrating chutes.

3. The horizontal force transmission device for vibration-isolated buildings according to claim 2, characterized in that: The lubricating layer (141) is a tetrafluoroethylene material layer, a modified polytetrafluoroethylene material layer, a modified ultra-high molecular weight polyethylene material layer, a stainless steel material layer or a graphite material layer.

4. The horizontal force transmission device for vibration-isolated buildings according to claim 1, characterized in that: The upper end of the steel box (11) is aligned with the upper end of the side beam (4), and the lower end of the steel box (11) is aligned with the lower end of the side beam (4).

5. A horizontal force transmission device for vibration-isolated buildings according to any one of claims 1-4, characterized in that: The steel box (11) includes a vertical plate part (111), an upper plate part (112), a lower plate part (113), a partition part (114), a rib part (116) and a backing plate part (115). The upper plate part (112), the vertical plate part (111) and the lower plate part (113) are connected in sequence to form a straight groove body with a "匚"-shaped cross-section. The two partition parts (114) divide the inside of the straight groove body into three installation spaces. Inside the middle installation space, there is a backing plate part (115) parallel to the vertical plate part (111). The backing plate part (115) is connected to the vertical plate part (111) through several rib parts (116). The four sides of the backing plate part (115) are respectively connected to the upper plate part (112), the lower plate part (113) and the two partition parts (114). The ends of the upper plate part (112), the lower plate part (113) and the partition part (114)背离 the vertical plate part (111) are flush and enclose to form the notch.

6. A horizontal force transmission device for vibration-isolated buildings according to claim 5, characterized in that: Several balls (13) protrude from the notch.

7. A horizontal force transmission device for vibration-isolated buildings according to claim 6, characterized in that: The thickness of the cage (14) is adaptively selected according to the actual installation distance between the backing plate part (115) and the mirror stainless steel plate (21).

8. A horizontal force transmission device for vibration-isolated buildings according to claim 7, characterized in that: Jacks (15) are arranged in both of the installation spaces on both sides.

9. A horizontal force transmission device for vibration-isolated buildings according to claim 8, characterized in that: Limit blocks (16) are also arranged in both of the installation spaces on both sides.

10. A horizontal force transmission device for vibration-isolated buildings according to claim 9, characterized in that: The limit blocks (16) are reinforced concrete members or high-strength grouting material members.

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