Seismic isolation support removable fire protection device

Abstract

The present invention provides a detachable fire protection device for a seismic isolation support, which is sleeved on the periphery of the seismic isolation column of the seismic isolation support and is located between the top plate and the bottom plate of the seismic isolation support. The detachable fire protection device for the seismic isolation support includes several layers of fire protection components stacked from top to bottom, and each group of fire protection components includes a first fire protection board and a second fire protection board, and the first fire protection board and the second fire protection board are spliced ​​to the periphery of the seismic isolation column through a splicing structure. The detachable fire protection device for the seismic isolation support provided by the present invention, the first fire protection board and the second fire protection board are spliced ​​with each other through a splicing structure to form a fire protection component, and the stacked multi-layer fire protection components are used to surround the periphery of the seismic isolation column of the seismic isolation support. The structure in which the above-mentioned multiple groups of fire protection components are stacked in sequence can not only meet the deformation requirements of the seismic isolation support, but also meet the fire prevention and fire resistance time requirements, and no embedded parts need to be reserved. The construction process is simple and convenient, easy to repair and replace, and has good practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of seismic isolation bearings, and more specifically, relates to a detachable fire protection device for a seismic isolation bearing. Background Art

[0002] In construction, bridges and other projects, seismic isolation bearings are often used to reduce the destructive effects of earthquakes on structures. Seismic isolation bearings have good seismic resistance and can ensure structural safety, thereby ensuring the safety of people and property. Existing seismic isolation bearings generally have poor fire resistance. When a fire occurs, seismic isolation bearings are difficult to meet fire protection requirements, which in turn affects their seismic isolation performance. Especially for seismic isolation building spaces with a large number of people, the required fire protection level is higher, generally needing to meet the first-level fire protection requirements, and existing seismic isolation bearings are difficult to meet the above fire protection requirements.

[0003] At present, although some seismic isolation bearings are covered with fireproof panels or coated with fireproof coatings to achieve fireproof effects, the above methods have certain defects. When the seismic isolation bearing is deformed, the fireproof panels can easily cause the cracking and failure of the outer fireproof panels, resulting in the instability of the seismic isolation bearing and affecting its seismic isolation performance. When the fireproof coating is applied to the seismic isolation bearing, because the fireproof coating is a brittle material and a steel wire mesh is configured inside when the coating is thick, whether the thick coating type or the thin coating type is used, the above coating layer does not match the deformation of the seismic isolation bearing, causing the fireproof coating to crack and fail, and also affecting the performance of the seismic isolation bearing. Summary of the invention

[0004] The object of the present invention is to provide a detachable fire protection device for a seismic isolation support, which can ensure the fire protection performance of the seismic isolation support and is easy to install and maintain.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a detachable fire protection device for a seismic isolation support, which is mounted on the outer periphery of the seismic isolation column of the seismic isolation support and is located between the top plate and the bottom plate of the seismic isolation support. The detachable fire protection device for the seismic isolation support includes several layers of fire protection components stacked from top to bottom, and each group of fire protection components includes a first fire protection board and a second fire protection board. The first fire protection board and the second fire protection board are spliced ​​to the outer periphery of the seismic isolation column through a splicing structure.

[0006] In one possible implementation, the horizontal projection of the fire protection assembly is a square, the first fire protection board and the second fire protection board are both right-angled triangular plate-shaped components, the hypotenuse sides of the first fire protection board and the second fire protection board are respectively provided with avoidance grooves for avoiding seismic isolation columns, and the splicing structure is arranged on the hypotenuse sides of the first fire protection board and the second fire protection board and is located outside the avoidance grooves.

[0007] In one possible implementation, the splicing structure includes a first wedge strip and a second wedge strip, wherein the first wedge strip is connected to the top of the oblique side of the first fire prevention board, and the second wedge strip is connected to the bottom of the oblique side of the second fire prevention board. The first wedge strip and the second wedge strip can be spliced ​​and snapped together up and down to limit the back-to-back translation separation of the first fire prevention board and the second fire prevention board.

[0008] In some embodiments, a first lap joint is provided on the oblique side of the first fire prevention board, and the first lap joint is located on the axial side of the first wedge-shaped strip close to the avoidance groove. A second lap joint is provided at the bottom of the oblique side of the second fire prevention board, and the second lap joint is located between the avoidance groove and the second wedge-shaped strip. The first lap joint is overlapped on top of the second lap joint.

[0009] In some embodiments, a flexible heat-insulating material is provided on the inner peripheral wall of the avoidance groove, and the flexible heat-insulating material is used to separate the first fire-proof board and the seismic isolation column or the second fire-proof board and the seismic isolation column.

[0010] In a possible implementation, the first fireproof board and the second fireproof board each include a corner board and two side boards, an expansion block is provided between the corner board and the side board, and an end of the expansion block is connected to the corner board or the side board via a connecting structure.

[0011] In some embodiments, the connecting structure includes a first step arranged at the end of the expansion block and a second step arranged on the angle plate or the side plate and corresponding to the first step up and down. The first step is provided with a first wedge-shaped surface extending obliquely outward and downward, and the second step is provided with a second wedge-shaped surface extending obliquely outward and upward. The first wedge surface can be fitted with the second wedge surface to limit the expansion block and the angle plate or connect the expansion block and the side plate.

[0012] In a possible implementation, in the up and down directions, the splicing directions of two adjacent layers of fire protection components are arranged perpendicular to each other.

[0013] In a possible implementation, a filling layer is provided above the fireproof assembly located on the uppermost layer. The filling layer is located between the top plate of the seismic isolation support and the fireproof assembly. The filling layer is a flexible fireproof material component.

[0014] In some embodiments, a filling layer is also provided between the fire protection assembly located at the bottom layer and the bottom plate of the seismic isolation support.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application provides a detachable fire protection device for the seismic isolation bearing, wherein the first fire protection board and the second fire protection board are spliced ​​together through a splicing structure to form a fire protection assembly, and the multi-layer fire protection assembly is stacked around the periphery of the seismic isolation column of the seismic isolation bearing. The structure in which the above-mentioned multiple groups of fire protection assemblies are stacked in sequence can not only meet the deformation requirements of the seismic isolation bearing, but also meet the time requirements of fire prevention and fire resistance. There is no need for on-site spraying, bonding and other construction procedures, and there is no need to reserve embedded parts. The construction process is simple and convenient, the components are highly standardized, easy to manufacture, install, repair and replace, and have good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a detachable fire protection device for a seismic isolation support and a seismic isolation support after installation provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a detachable fire protection device for a seismic isolation support and another state of the seismic isolation support after installation provided by an embodiment of the present invention;

[0019] Figure 3 For the embodiment of the present invention Figure 1 Schematic diagram of the structure of the detachable fire protection device of the middle seismic isolation support;

[0020] Figure 4 For the embodiment of the present invention Figure 3 Schematic diagram of the explosion structure of the detachable fire protection device of the middle seismic isolation support;

[0021] Figure 5 For the embodiment of the present invention Figure 1 Schematic diagram of the structure of the middle seismic isolation bearing;

[0022] Figure 6 For the embodiment of the present invention Figure 3 Schematic diagram of the explosion structure of the fireproof component;

[0023] Figure 7 A schematic diagram of a partial explosion structure of another embodiment of the second fireproof board provided in an embodiment of the present invention;

[0024] Figure 8 For the embodiment of the present invention Figure 7 A structural diagram of the expansion block from another angle.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. First fireproof board; 2. Second fireproof board; 21. Avoidance groove; 22. Filling layer; 23. Flexible thermal insulation material; 4. Splicing structure; 41. First wedge-shaped strip; 42. Second wedge-shaped strip; 51. First overlapping platform; 52. Second overlapping platform; 61. Angle plate; 62. Side plate; 63. Extension block; 7. Connection structure; 71. First step; 72. Second step; 73. First wedge-shaped surface; 74. Second wedge-shaped surface; 8. Seismic isolation bearing; 81. Seismic isolation column; 82. Top plate; 83. Bottom plate. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0029] Please also read Figures 1 to 8 The detachable fire protection device for the seismic isolation support provided by the present invention is now described. The detachable fire protection device for the seismic isolation support is sleeved on the outer periphery of the seismic isolation column 81 of the seismic isolation support 8 and is located between the top plate 82 and the bottom plate 83 of the seismic isolation support 8. The detachable fire protection device for the seismic isolation support includes several layers of fire protection components stacked from top to bottom, and each group of fire protection components includes a first fire protection board 1 and a second fire protection board 2. The first fire protection board 1 and the second fire protection board 2 are spliced ​​to the outer periphery of the seismic isolation column 81 through a splicing structure 4.

[0030] The detachable fire protection device for the seismic isolation bearing provided in the present embodiment is compared with the prior art. The first fire protection board 1 and the second fire protection board 2 are spliced ​​together through a splicing structure 4 to form a fire protection assembly. The multi-layer fire protection assembly is stacked and arranged around the periphery of the seismic isolation column 81 of the seismic isolation bearing 8. The structure in which the above-mentioned multiple groups of fire protection assemblies are stacked in sequence can not only meet the deformation requirements of the seismic isolation bearing 8, but also meet the time requirements of fire prevention and fire resistance. There is no need for on-site spraying, bonding and other construction procedures, and there is no need to reserve embedded parts. The construction process is simple and convenient, the components are highly standardized, and they are easy to manufacture, install, repair and replace, and have good practicality.

[0031] In this embodiment, the first fireproof board and the second fireproof board 2 are combined to form a fireproof assembly, which facilitates the installation of the protection assembly layer by layer to the periphery of the seismic isolation column 81. By stacking multiple groups of fireproof assemblies, a fireproof assembly protection device enclosed around the seismic isolation support 8 is formed, which can form a good fire protection effect on the seismic isolation support 8. The first fireproof board 1 and the second fireproof board 2 can be processed in a factory prefabricated manner, and then spliced ​​into one by the splicing structure 4, which facilitates the installation and maintenance of the fireproof assembly, does not require pre-reserved embedded parts, and does not require bonding or spraying operations, which helps to improve assembly efficiency.

[0032] The above-mentioned seismic isolation bearing 8 is arranged between the superstructure and the foundation, and the seismic isolation column 81 is formed by multiple seismic isolation layers, which can realize the soft connection between the above-mentioned structure and the ground, effectively offset the transfer of seismic energy, and usually can offset about 80% of the seismic energy, thereby protecting the building structure and the safety of the internal personnel, thereby achieving the purpose of seismic isolation.

[0033] On the basis of the above structure, a non-flammable lubricant is provided between two adjacent layers of fireproof components to reduce the friction between the upper and lower adjacent layers of fireproof components, so as to better adapt to the deformation of the seismic isolation bearing.

[0034] In some possible implementations, the above-mentioned characteristic fire protection components are used as follows Figures 1 to 8 Please also refer to Figures 1 to 8 The horizontal projection of the fireproof assembly is a square. The first fireproof board 1 and the second fireproof board 2 are both right-angled triangular plate-shaped components. The hypotenuse sides of the first fireproof board 1 and the second fireproof board 2 are respectively provided with avoidance grooves 21 for avoiding the seismic isolation column 81. The splicing structure 4 is arranged on the hypotenuse sides of the first fireproof board 1 and the second fireproof board 2, and is located outside the avoidance grooves 21.

[0035] In this embodiment, the top plate 82 and the bottom plate 83 of the seismic isolation support 8 are generally square structures, and the horizontal projection of the fireproof assembly also adopts a square with the same area. The first fireproof board 1 and the second fireproof board 2 are right-angled triangle plates 61, and the areas of the two are equal. The avoidance grooves 21 of the first fireproof board 1 and the second fireproof board 2 can form a structural avoidance for the seismic isolation column 81, and the two can be spliced ​​into a plate-shaped fireproof assembly surrounding the outer periphery of the seismic isolation column 81 through the splicing structure 4.

[0036] Specifically, the horizontal projection of the seismic isolation column 81 is a circle, and the avoidance grooves 21 on the first fire protection board 1 and the second fire protection board 2 are semicircles of equal diameter. The two avoidance grooves 21 can be enclosed into a circle, forming an effect of being arranged around the outer periphery of the seismic isolation column 81. The multi-layer fire protection components are arranged in a stacked manner to achieve fire protection for the seismic isolation column 81 and ensure the fire safety of the seismic isolation bearing 8.

[0037] In some possible implementations, the above-mentioned characteristic splicing structure 4 is adopted as follows Figures 1 to 8 Please also refer to Figures 1 to 8 The splicing structure 4 includes a first wedge strip 41 and a second wedge strip 42. The first wedge strip 41 is connected to the top of the hypotenuse side of the first fire prevention board 1, and the second wedge strip 42 is connected to the bottom of the hypotenuse side of the second fire prevention board 2. The first wedge strip 41 and the second wedge strip 42 can be spliced ​​and connected up and down to limit the first fire prevention board 1 and the second fire prevention board 2 to move back to back and separate.

[0038] In this embodiment, the splicing structure 4 adopts a structure in which the first wedge strip 41 and the second wedge strip 42 are snap-fitted together. The top surface of the first wedge strip 41 is flush with the top surface of the first fireproof board 1, and the bottom surface of the first wedge strip 41 extends outwardly and downwardly at an angle, forming a first wedge-shaped groove body with an opening downward with the end surface of the first fireproof board 1. The bottom surface of the first wedge strip 41 is flush with the top surface of the second fireproof board 2, and the top surface of the second wedge strip 42 extends outwardly and upward at an angle, forming a second wedge-shaped groove body with an opening upward with the end surface of the second fireproof board 2. The second wedge strip 42 is snap-fitted into the first wedge-shaped groove body, and the first wedge strip 41 is snap-fitted into the second wedge-shaped groove body, so that the hypotenuse sides of the first fireproof board 1 and the second fireproof board 2 are reliably connected, ensuring the effect of the two being arranged around the outer periphery of the seismic isolation column 81, avoiding horizontal movement and separation of the two during an earthquake, thereby realizing fire protection of the seismic isolation column 81.

[0039] In some embodiments, the first fireproof board 1 and the second fireproof board 2 with the above characteristics can be used as follows Figures 1 to 8 Please also refer to Figures 1 to 8A first overlapping platform 51 is provided on the oblique side of the first fire prevention board 1, and the first overlapping platform 51 is located on the axial side of the first wedge-shaped strip 41 close to the avoidance groove 21. A second overlapping platform 52 is provided at the bottom of the oblique side of the second fire prevention board 2, and the second overlapping platform 52 is located between the avoidance groove 21 and the second wedge-shaped strip 42. The first overlapping platform 51 is overlapped on the top of the second overlapping platform 52.

[0040] In this embodiment, on the basis of using the first wedge strip 41 and the second wedge strip 42 to form a snap fit, a first lap platform 51 and a second lap platform 52 are respectively provided on the hypotenuse sides of the first fireproof board 1 and the second fireproof board 2. The top surface of the first lap platform 51 is flush with the top surfaces of the first wedge strip 41 and the first fireproof board 1, respectively. The first lap platform 51 is connected to the inner end of the first wedge strip 41. The outer end surface of the first lap platform 51 can form a blockage for the inner end of the first wedge groove, and can form a limiting effect on the first wedge block in its extension direction, so as to avoid the first fireproof board 1 and the second fireproof board 2 from sliding along their respective hypotenuse sides, and ensure the position stability at the periphery of the seismic isolation column 81.

[0041] Similarly, the bottom surface of the second lap platform 52 is flush with the bottom surfaces of the second wedge strip 42 and the second fireproof board 2 respectively. The second lap platform 52 is connected to the inner end of the second wedge strip 42. The outer end surface of the second lap platform 52 can form a blockage for the inner end of the second wedge groove, and can form a limiting effect on the second wedge block in its extension direction, thereby preventing the first fireproof board 1 and the second fireproof board 2 from sliding along their respective oblique sides, ensuring the position stability at the periphery of the isolation column 81, and then ensuring the stability of the fireproof assembly at the periphery of the isolation column 81, thereby achieving fire protection for the isolation support 8.

[0042] The arrangement of the above structure can keep the relative positions of the first fireproof board 1 and the second fireproof board 2 of the same fireproof assembly stable, thereby achieving effective protection of the periphery of the seismic isolation column 81 through the multi-layer stacked fireproof assembly, forming reliable fire protection performance.

[0043] In some embodiments, the characteristic avoidance groove 21 can be used as follows: Figures 1 to 8 Please also refer to Figures 1 to 8 A flexible heat-insulating material 23 is provided on the inner peripheral wall of the avoidance groove 21 , and the flexible heat-insulating material 23 is used to separate the first fire-proof board 1 and the seismic isolation column 81 or the second fire-proof board 2 and the seismic isolation column 81 .

[0044] In the present embodiment, flexible thermal insulation material 23 is provided at the parts where the first fireproof board 1 and the second fireproof board 2 contact the seismic isolation column 81. The flexible thermal insulation material 23 is connected to the inner peripheral wall of the avoidance groove 21, and can form a flexible contact effect with the outer peripheral wall of the seismic isolation column 81, thereby forming good thermal insulation, which can avoid structural damage caused by excessive rigid impact on the seismic isolation bearing 8, and help to ensure the seismic isolation performance of the seismic isolation bearing 8.

[0045] In some possible implementations, the first fireproof board 1 and the second fireproof board 2 are as follows: Figures 1 to 8 Please also refer to Figures 1 to 8 The first fireproof board 1 and the second fireproof board 2 both include a corner board 61 and two side boards 62 , an expansion block 63 is provided between the corner board 61 and the side board 62 , and the end of the expansion block 63 is connected to the corner board 61 or the side board 62 through a connecting structure 7 .

[0046] In this embodiment, since there are many types of seismic isolation bearings 8 corresponding to different sizes of structural dimensions, in order to make the seismic isolation bearing detachable fire protection device have better structural matching, the first fireproof board 1 and the second fireproof board 2 are combined in the form of a corner plate 61 and a side plate 62, and the first fireproof board 1 is used as an example for structural description. The first fireproof board 1 includes a corner plate 61 and two side plates 62, the corner plate 61 is a plate with a right angle, and the side plate 62 is a plate with sharp angles on both sides of the corner plate 61. By arranging an expansion block 63 between the corner plate 61 and the side plate 62, the side length of the first fireproof board 1 can be extended, which can adapt to the seismic isolation bearing 8 with a larger structural size, thereby expanding the scope of application of the first fireproof board 1 and the second fireproof board 2.

[0047] In some embodiments, the characteristic connection structure 7 can be adopted as follows Figures 1 to 8 Please also refer to Figures 1 to 8 The connecting structure 7 includes a first step 71 arranged at the end of the expansion block 63 and a second step 72 arranged on the angle plate 61 or the side plate 62 and corresponding to the first step 71 up and down. The first step 71 is provided with a first wedge-shaped surface 73 extending obliquely outward and downward, and the second step 72 is provided with a second wedge-shaped surface 74 extending obliquely outward and upward. The first wedge surface 73 can be fitted with the second wedge surface 74 to limit the expansion block 63 and the angle plate 61 or connect the expansion block 63 and the side plate 62.

[0048] In this embodiment, the expansion block 63 is connected to the first fireproof board 1 or the second fireproof board 2 by a connection structure 7, and the connection structure 7 includes a first step 71 and a second step 72, and the first step 71 is set higher than the second step 72. A first wedge-shaped surface 73 is provided on the first step 71 and extends gradually outward and downward, and a third wedge-shaped groove is formed between the first wedge-shaped surface 73 and the end surface of the expansion block 63. A second wedge-shaped surface 74 is provided on the second step 72 and extends gradually outward and upward, and a fourth wedge-shaped groove is formed between the second wedge-shaped surface 74 and the end surface of the side plate 62. Through the contact and cooperation between the first wedge-shaped surface 73 and the second wedge-shaped surface 74, the first wedge-shaped surface 73 is extended into the fourth wedge-shaped groove, and the second wedge-shaped surface 74 is extended into the third wedge-shaped groove, so that a locking effect is formed between the first step 71 and the second step 72, thereby ensuring the stability of the relative position of the angle plate 61 and the side plate 62.

[0049] Furthermore, the first wedge surface 73 can be arranged below the bottom surface of the first step 71, or it can extend outward and downward from a position higher than the bottom surface of the first step 71, so that the bottom of the first wedge-shaped groove extends upward to the bottom of the first step 71. Correspondingly, the second wedge surface 74 extends outward and upward from a position lower than the top surface of the second step 72, so that the bottom of the second wedge-shaped groove extends downward to the top of the second step 72, thereby reducing the space occupied by the connecting structure 7 and ensuring the reliable locking of the first step 71 and the second step 72.

[0050] In some possible implementations, the above-mentioned characteristic fire protection components are used as follows Figures 1 to 8 Please also refer to Figures 1 to 8 In the up and down directions, the splicing directions of two adjacent layers of fire protection components are arranged perpendicular to each other.

[0051] In the present embodiment, the splicing directions of the two layers of fireproof components are perpendicular to each other, that is, the joints of the two groups of fireproof components are perpendicular to each other, so that a single layer of fireproof components can be deformed following the deformation of the seismic isolation column 81, and has a good shape-following effect. It can provide fire protection for the seismic isolation bearing 8 in real time, avoid affecting the seismic isolation performance of the seismic isolation bearing 8, and meet the dual needs of seismic isolation and fire protection.

[0052] For some possible implementations, please refer to Figures 1 to 8 A filling layer 22 is provided above the fireproof assembly on the uppermost layer. The filling layer 22 is located between the top plate 82 of the seismic isolation support 8 and the fireproof assembly. The filling layer 22 is a flexible fireproof material component.

[0053] In this embodiment, when installing the fireproof assembly layer by layer, before the first fireproof board 1 and the second fireproof board 2 are assembled, the direction of the split of the first fireproof board 1 and the second fireproof board 2 should be at a 45-degree angle to one of the diagonals of the bottom plate 83 of the seismic isolation support 8, so that the right angles of the first fireproof board 1 and the second fireproof board 2 are exposed at the edge of the bottom plate 83 of the seismic isolation support 8, which is convenient for grasping the right angles of the first fireproof board 1 and the second fireproof board 2 for assembly. When assembling, the second fireproof board 2 is positioned higher than the first fireproof board 1 and approaches the first fireproof board 1, and then the second fireproof board 2 is moved downward to achieve the snap-on assembly with the first fireproof board 1. After assembly, the layer of fireproof assembly is rotated at a 45-degree angle so that it corresponds to the bottom plate 83 of the seismic isolation support 8. The above structure overcomes the defects of the fireproof structure used in the existing seismic isolation support 8, is convenient for standardized production, helps to improve production efficiency, and can play a good role in fire prevention and heat insulation.

[0054] According to the above method, the fire protection components are installed layer by layer to the top layer. At this time, there is still an installation gap between the top of the fire protection components of the top layer and the top plate 82 of the seismic isolation support 8. By arranging a filling layer 22 here, the detachable fire protection device of the seismic isolation support can be stably installed to the outer periphery of the seismic isolation support 8 to ensure the reliability of the installation and avoid structural damage between the top plate 82 and the fire protection components due to rigid contact between the two.

[0055] On the basis of the above structure, the above filling layer 22 can also be set between the bottom plate 83 of the seismic isolation support 8 and the lowest fire protection component to achieve flexible contact between the fire protection component and the bottom plate 83, avoid structural damage, and have a good structural protection effect.

[0056] The filling layer 22 is aerogel felt, which also has fireproof and heat-insulating properties, further improving the fireproof and heat-insulating effects. The aerogel felt is the same size as the fireproof component, that is, the horizontal projection of the aerogel felt is consistent with the horizontal projection of the fireproof component. The aerogel felt can protect the top plate 82 and the bottom plate 83 of the seismic isolation support, and can also reserve a certain space for the installation of the fireproof component to prevent the seismic isolation support from being squeezed under the action of its own weight after the building is built, causing the fireproof component to be crushed.

[0057] During installation, aerogel felt is first laid on the bottom plate 83 of the seismic isolation support 8 to form a filling layer 22, and then whether to add an expansion block 63 is selected according to the size of the seismic isolation support 8. When there is no need to add the expansion block 63, the direction of the seam between the first fireproof board 1 and the second fireproof board 2 before splicing is at an angle of 45 degrees to one of the diagonals of the bottom plate 83 of the seismic isolation support 8. When splicing, the second fireproof board 2 is positioned higher than the first fireproof board 1 and approaches the first fireproof board 1. Then, the second fireproof board 2 is moved downward to achieve snap-on splicing with the first fireproof board 1. After splicing, the layer of fireproof components is rotated 45 degrees to correspond to the bottom plate 83 of the seismic isolation support 8.

[0058] After that, apply non-flammable lubricant to the top surface of the fireproof component layer, then assemble the multiple layers of fireproof components layer by layer and apply non-flammable lubricant, place aerogel felt on the top of the top fireproof component to form a filling layer 22, and complete the entire installation process. The above structure overcomes the defects of the fireproof structure used in the existing seismic isolation support 8, facilitates standardized production, helps to improve production efficiency, and can play a good role in fire prevention and heat insulation.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable fire protection device for a seismic isolation support, which is sleeved on the outer periphery of a seismic isolation column (81) of a seismic isolation support (8) and is located between a top plate (82) and a bottom plate (83) of the seismic isolation support (8), characterized in that: The seismic isolation support detachable fire protection device comprises a plurality of layers of fire protection components stacked from top to bottom, each group of the fire protection components comprises a first fire protection board (1) and a second fire protection board (2), and the first fire protection board (1) and the second fire protection board (2) are spliced ​​to the outer periphery of the seismic isolation column (81) through a splicing structure (4); The horizontal projection of the fireproof assembly is a square; the first fireproof board (1) and the second fireproof board (2) are both right-angled triangular plate-shaped components; the hypotenuse sides of the first fireproof board (1) and the second fireproof board (2) are respectively provided with avoidance grooves (21) for avoiding seismic isolation columns (81); the splicing structure (4) is arranged on the hypotenuse sides of the first fireproof board (1) and the second fireproof board (2) and is located outside the avoidance grooves (21); The splicing structure (4) comprises a first wedge-shaped strip (41) and a second wedge-shaped strip (42), wherein the first wedge-shaped strip (41) is connected to the top of the hypotenuse side of the first fireproof board (1), and the second wedge-shaped strip (42) is connected to the bottom of the hypotenuse side of the second fireproof board (2), and the first wedge-shaped strip (41) and the second wedge-shaped strip (42) can be spliced ​​and snapped together up and down to limit the first fireproof board (1) and the second fireproof board (2) from moving backwards and apart; The first fireproof board (1) and the second fireproof board (2) both include a corner board (61) and two side boards (62), an expansion block (63) is provided between the corner board (61) and the side board (62), and an end of the expansion block (63) is connected to the corner board (61) or the side board (62) via a connecting structure (7); The connecting structure (7) comprises a first step (71) arranged at the end of the expansion block (63) and a second step (72) arranged on the angle plate (61) or the side plate (62) and corresponding to the first step (71) in upper and lower directions. The first step (71) is provided with a first wedge-shaped surface (73) extending outwardly and downwardly, and the second step (72) is provided with a second wedge-shaped surface (74) extending outwardly and upwardly. The first wedge-shaped surface (73) can be fitted with the second wedge-shaped surface (74) to limit the expansion block (63) and the angle plate (61) or connect the expansion block (63) and the side plate (62). In the up and down directions, the splicing directions of the fire-proof components of two adjacent layers are arranged perpendicular to each other.

2. The seismic isolation support detachable fire protection device according to claim 1, characterized in that A first lap joint (51) is provided at the top of the oblique side of the first fireproof board (1), and the first lap joint (51) is located between the avoidance groove (21) and the first wedge-shaped strip (41); a second lap joint (52) is provided at the bottom of the oblique side of the second fireproof board (2), and the second lap joint (52) is located between the avoidance groove (21) and the second wedge-shaped strip (42), and the first lap joint (51) is overlapped on top of the second lap joint (52).

3. The seismic isolation support detachable fire protection device according to claim 1, characterized in that: A flexible heat-insulating material (23) is provided on the inner peripheral wall of the avoidance groove (21), and the flexible heat-insulating material (23) is used to separate the first fire-proof board (1) and the seismic isolation column (81) or the second fire-proof board (2) and the seismic isolation column (81).

4. The seismic isolation support detachable fire protection device according to any one of claims 1 to 3, characterized in that: A filling layer (22) is provided above the fireproof component located at the uppermost layer, the filling layer (22) is located between the top plate (82) of the seismic isolation support (8) and the fireproof component, and the filling layer (22) is a flexible fireproof material component.

5. The seismic isolation support detachable fire protection device according to claim 4, characterized in that: A filling layer (22) is also provided between the fireproof assembly located at the bottom layer and the bottom plate (83) of the seismic isolation support (8).

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