A seismic isolation trench cover structure of a seismic isolation building and a working method thereof

Abstract

The present invention belongs to the field of building technology, and relates to a seismic isolation trench cover structure of a seismic isolation building and a working method thereof. The seismic isolation trench cover structure includes multiple groups of covers, each group of covers includes a first cover part, a second cover part and an L-shaped steel cover, the first cover part is fixedly connected to the building body, the second cover part is fixedly connected to the retaining wall, and the L-shaped steel cover covers the first cover part and the second cover part; two adjacent cover parts are connected in a splicing form; one side of the first cover part is connected to a force-bearing part and a partition steel plate, and the partition steel plate is located above the force-bearing part; one side of the second cover part is connected to a force-bearing hollow pipe fitting and a first cantilever cover plate, and the force-bearing part slides in the force-bearing hollow pipe fitting; the upper surfaces of the first cantilever cover plate and the second cover plate part are coplanar; the force-bearing hollow pipe fitting is arranged below the first cantilever cover plate, and the partition steel plate slides in the gap between the force-bearing hollow pipe fitting and the first cantilever cover plate. The cover structure produces relative displacement with the displacement of the seismic isolation layer to avoid damage.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to a seismic isolation trench cover plate structure of a seismic isolation building and a working method thereof. Background Art

[0002] At present, there are a large number of new buildings that need to adopt seismic isolation technology. Seismic isolation buildings will repeatedly swing horizontally during earthquakes. Seismic isolation trench covers are installed in the indoor and outdoor floor height areas near the outdoor areas of seismic isolation buildings. The function of seismic isolation trench covers is to close the seismic isolation trenches. During earthquakes, the seismic isolation trench covers will repeatedly move horizontally with the building. During construction, it is necessary to reserve a deformation space that allows the seismic isolation trench cover to move horizontally. Generally, this deformation space will be filled with flexible materials or directly covered with flexible soil layers.

[0003] In actual engineering applications, an isolation trench cover is installed between the building body and the retaining wall. The existing isolation trench cover is a plate-like structure covering the isolation trench. If it is found during the construction process that the outer contour of the building is too close to the land planning red line, it is necessary to shorten the distance between the retaining wall and the building and raise the retaining wall, which will occupy part of the horizontal displacement space of the isolation trench cover of the building, causing the isolation trench cover to directly collide with the concrete part during an earthquake and cause structural damage.

[0004] After searching, the patent document with publication number CN103790186A discloses a seismic isolation trench cover structure for a building, including a seismic isolation trench provided between the seismic isolation building body and the site soil, a drainage component provided in the site soil, and a seismic isolation trench retaining wall provided in the seismic isolation trench, wherein the drainage component is provided with a support plate at one end close to the seismic isolation trench, and a prefabricated cover plate and a cast-in-place composite layer provided on the prefabricated cover plate are connected between the support plate and the seismic isolation building body, and the prefabricated cover plate and the cast-in-place composite layer are both fixedly connected to the seismic isolation building body, and a sliding layer is provided between the prefabricated cover plate and the support plate, so that the prefabricated cover plate and the seismic isolation trench retaining wall can freely move relative to each other under the action of an earthquake. The design of this patent document is essentially a stacked cover plate, and when the earthquake is relatively large, the pre-supported cover plate will still collide and be damaged with the ditch cover plate next to it.

[0005] The patent document with announcement number CN222252240U discloses a seismic isolation trench cover for buildings, which is staggered with the bottom plate and the top plate to achieve a better waterproof effect than traditional covers. The seismic isolation cover of a seismic isolation building needs to move with the building body during an earthquake. During the construction process, the construction unit is prone to errors, and the deformation space that originally allowed the seismic isolation trench cover to move horizontally may be filled with concrete, causing the seismic isolation trench cover to directly collide with the concrete part during an earthquake and cause structural damage. Summary of the invention

[0006] The purpose of the present invention is to provide a seismic isolation trench cover structure of a seismic isolation building and a working method thereof, so as to solve the problem that the existing seismic isolation trench cover structure is easily damaged.

[0007] The present invention is achieved through the following technical solutions:

[0008] The present invention discloses a seismic isolation trench cover plate structure of a seismic isolation building, comprising a plurality of cover plates, each cover plate group comprising a first cover plate portion, a second cover plate portion and an L-shaped steel cover plate. During construction, the first cover plate portion is fixedly connected to the building body, the second cover plate portion is fixedly connected to the retaining wall away from the building body, and the L-shaped steel cover plate is covered on the first cover plate portion and the second cover plate portion.

[0009] Two adjacent first cover plate parts are connected in a splicing manner, and two adjacent second cover plate parts are connected in a splicing manner; the connection extension direction of the first cover plate parts is parallel to the connection extension direction of the second cover plate parts;

[0010] A side of the first cover plate portion away from the building body is connected with a force-bearing portion and a partition steel plate, the partition steel plate is located above the force-bearing portion, and the partition steel plate is fixedly connected to a side surface of the first cover plate portion;

[0011] A stress-bearing hollow pipe and a first cantilevered cover are connected to one side of the second cover away from the retaining wall, and the other end of the stress-bearing part away from the first cover extends into the stress-bearing hollow pipe, and the stress-bearing part can slide in the stress-bearing hollow pipe;

[0012] The first cantilevered cover plate is fixedly connected to the second cover plate portion as a whole, and the upper surfaces of the first cantilevered cover plate and the second cover plate portion are coplanar;

[0013] The stressed hollow pipe is arranged below the first cantilevered cover plate, and a gap is left between the stressed hollow pipe and the first cantilevered cover plate, one end of the partition steel plate close to the second cover plate portion extends into the gap, and the partition steel plate can slide in the gap.

[0014] Furthermore, a long installation groove is prefabricated on the upper surface of the first cover plate portion, and the long installation groove is used to fix the L-shaped steel cover plate.

[0015] Furthermore, the cross section of the stress-bearing part is an I-shaped steel piece, the cross section of the stress-bearing hollow pipe piece is a hollow I-shaped piece, and a plurality of rollers are arranged on the flange of the stress-bearing part, and the rollers abut against the stress-bearing part.

[0016] Furthermore, a telescopic bracket is provided between the first cover plate portion and the second cover plate portion. The telescopic bracket is located above the partition steel plate and is connected between the first cover plate portion and the opposite side walls of the first cantilever cover plate.

[0017] Furthermore, a plurality of supporting cross bars are fixedly connected to the upper surface of the telescopic bracket, and the plurality of supporting cross bars are parallel to each other.

[0018] Furthermore, retractable rods are embedded between the plurality of support cross bars, and the retractable rods are connected to the support cross bars to form a mesh structure.

[0019] Furthermore, a first force-holding connector is disposed on the lower end surface of the first cover plate portion, a second force-holding connector is disposed on the lower end surface of the second cover plate portion, and a tension-compression damper is fixedly connected between the first force-holding connector and the second force-holding connector.

[0020] Furthermore, a waterproof tarpaulin is used to cover every two adjacent L-shaped steel cover plates, and the waterproof tarpaulin is bonded and fixed to the L-shaped steel cover plates.

[0021] Furthermore, a first supporting plate extending from the first cover plate portion is provided on both sides, a first tooth is provided on the surface of the first supporting plate, and two adjacent first cover plate portions are alternately connected through the first tooth;

[0022] Protruding second support plates are arranged on both sides of the second cover plate portion, second teeth are arranged on the surface of the second support plate, and two adjacent second cover plate portions are alternately connected through the second teeth.

[0023] The present invention also discloses a working method of the seismic isolation trench cover structure of the seismic isolation building, which includes the following process:

[0024] When an earthquake occurs, the distance between the building body and the retaining wall will change due to shaking, causing the force-bearing part to slide in the force-bearing hollow pipe, driving the partition steel plate to slide in the gap between the force-bearing hollow pipe and the first cantilever cover plate;

[0025] This causes relative movement between the first cover plate portion and the second cover plate portion, and relative displacement between adjacent first cover plate portions or adjacent second cover plate portions.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] The present invention discloses a seismic isolation trench cover structure of a seismic isolation building, which has the following advantages:

[0028] First, the first cover plate is fixedly connected to the building body, the second cover plate is fixedly connected to the retaining wall, and the L-shaped steel cover plate is placed on top of the two. This connection method makes the cover plate structure form a whole. Under the action of an earthquake, each part can be synergistically stressed and jointly resist the earthquake force. At the same time, adjacent cover plates are connected in a splicing form, and the extension directions are parallel, which can ensure the integrity and continuity of the entire cover plate structure in the horizontal direction, make the force transmission more uniform, reduce local stress concentration, and improve the seismic performance of the structure.

[0029] The integrity and stability of the cover plate structure can reduce the deformation and cracking of the cover plate caused by earthquakes, wind loads and other factors, thereby reducing the risk of moisture entering the seismic isolation trench. In addition, the L-shaped steel cover plate covers the first and second cover plate parts, which can protect the lower connection parts and seismic isolation trenches to prevent damage from external factors, further improving the durability of the structure.

[0030] Secondly, the load-bearing part slides in the load-bearing hollow pipe, and the partition steel plate slides in the gap between the load-bearing hollow pipe and the first cantilever cover plate. This sliding connection method can consume part of the seismic energy during an earthquake. When an earthquake occurs, the cover plate structure will produce relative displacement with the displacement of the seismic isolation layer. The sliding connection part absorbs energy through friction and deformation, plays a shock-absorbing role, reduces the transmission of seismic energy to the upper structure, and protects the safety of the building structure.

[0031] Thirdly, the setting of the separation steel plate can prevent the debris on the upper part of the seismic isolation trench cover from falling into the stressed part or the stressed hollow pipe. During an earthquake, although the cover structure will deform, the separation steel plate slides in the gap between the stressed hollow pipe and the first cantilever cover, and can still maintain a certain sealing effect, reducing the possibility of water penetration, thereby protecting the seismic isolation device and the building foundation in the seismic isolation trench from water erosion and improving the durability of the structure.

[0032] Furthermore, a telescopic bracket is designed between the first cover plate portion and the second cover plate portion. The telescopic bracket is located above the partition steel plate. The function of the telescopic bracket is to connect the first cover plate portion and the first cantilever cover plate to prevent the stressed part and the stressed hollow pipe from being separated too quickly when encountering a large earthquake.

[0033] Furthermore, a plurality of supporting cross bars are fixedly connected to the upper surface of the telescopic bracket, and the plurality of supporting cross bars are parallel to each other. The function of the telescopic bracket is to tie the first cover plate portion and the first cantilever cover plate together to prevent the force-bearing portion and the force-bearing hollow pipe from being separated too quickly during a large earthquake, and to reduce or increase the distance between the plurality of supporting cross bars. The function of the plurality of supporting cross bars is that when a person falls into the gap between the first cover plate portion and the first cantilever cover plate, the person's feet can step on the upper part of the plurality of supporting cross bars to avoid the feet falling directly into the telescopic bracket and being pinched.

[0034] Furthermore, a retractable rod should be embedded between the multiple supporting cross bars. The retractable rod can be extended and retracted in coordination with the extension and retraction of the telescopic bracket. Its function is to cooperate with the multiple supporting cross bars to form a mesh structure to prevent people's feet from falling.

[0035] Furthermore, a second force-holding connector is provided in the middle of the lower end surface of the second cover plate portion, and a first force-holding connector is provided in the middle of the lower end surface of the first cover plate portion. The second force-holding connector and the first force-holding connector are actually metal connectors, which can be pre-buried in the lower parts of the second cover plate portion and the first cover plate portion. A tension-compression damper is fixedly connected between the second force-holding connector and the first force-holding connector. When the first cover plate portion and the second cover plate portion tend to move away from or approach each other during an earthquake, the tension-compression damper can dissipate seismic energy and generate tension to prevent the force-bearing portion from detaching from the force-bearing hollow pipe too quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of a seismic isolation trench cover structure of a seismic isolation building of the present invention;

[0037] Figure 2 It is a schematic diagram of the use of the seismic isolation trench cover structure of the present invention in engineering;

[0038] Figure 3 It is a schematic diagram of the positional relationship between the first cover plate portion and the force-bearing portion in the present invention;

[0039] Figure 4 for Figure 3 Another perspective of

[0040] Figure 5 Schematic diagram of the positional relationship between the first cover plate portion and the second cover plate portion in the present invention;

[0041] Figure 6 for Figure 5 Another perspective of

[0042] Figure 7 Schematic diagram of the positional relationship between the second cover plate portion and the partition steel plate in the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the present invention when there is no L-shaped steel cover plate;

[0044] Fig. 9 is a schematic diagram of the splicing of the first cover plate portion;

[0045] Fig.10 It is a schematic diagram of the connection between the force-bearing part and the force-bearing hollow pipe;

[0046] Fig.11 It is a structural schematic diagram of the telescopic bracket part;

[0047] Fig.12 It is a structural schematic diagram of adjacent second cover plate parts connected to each other.

[0048] Among them, 100, building body; 200, retaining wall; 300, seismic isolation trench;

[0049] 1. The first cover plate portion; 2. The second cover plate portion; 3. The L-shaped steel cover plate; 4. The roller; 5. The tension and compression damper; 6. The tripod; 7. The mounting slot; 8. The first force-holding connector; 9. The second force-holding connector; 10. The telescopic rod; 11. The first support plate; 12. The second support plate; 13. The telescopic bracket; 14. The supporting cross bar; 15. The force-bearing portion; 16. The force-bearing hollow pipe; 17. The partition steel plate; 18. The first cantilever cover plate. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention more clear, the following is further described in detail with reference to 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 used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, not all embodiments.

[0051] The components described and shown in the drawings and embodiments of the present invention may be arranged and designed in various configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0052] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, element, method, article or equipment that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to the process, element, method, article or equipment.

[0053] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0054] like Figure 1 As shown, the present invention discloses a seismic isolation trench cover structure of a seismic isolation building, including multiple groups of cover plates, each group of cover plates includes a first cover plate part 1, a second cover plate part 2 and an L-shaped steel cover plate 3, and the upper surface of the first cover plate part 1 is prefabricated with an installation long groove 7, and the installation long groove 7 is used to fix the L-shaped steel cover plate 3.

[0055] The end of the short limb of the L-shaped steel cover plate 3 is provided with a rubber strip to facilitate insertion into the installation long groove 7. The long limb of the L-shaped steel cover plate 3 covers the first cover plate part 1, the first cantilever cover plate 18 and part of the second cover plate part 2. The function of the L-shaped steel cover plate 3 is to prevent people from entering the gap between the first cover plate part 1 and the first cantilever cover plate 18 during daily use. Soil can also be directly laid on the upper part of the L-shaped steel cover plate 3 to build a road and prevent impurities such as sand and soil from entering the gap between the first cover plate part 1 and the first cantilever cover plate 18.

[0056] like Figure 2 As shown, in actual engineering application, the seismic isolation trench cover structure of the present invention is arranged above the seismic isolation trench 300, the first cover plate part 1 is arranged close to the side of the building body 100, the first cover plate part 1 is fixedly connected to the building body 100, and the second cover plate part 2 is far away from the building body 100 and fixedly connected to the retaining wall 200. The L-shaped steel cover plate 3 is covered above the first cover plate part 1 and the second cover plate part 2.

[0057] Specifically, the retaining wall 200 is a reinforced concrete retaining wall, the first cover plate portion 1 is a reinforced concrete component, and the second cover plate portion 2 is a reinforced concrete component.

[0058] like Figure 2 and Figure 3 As shown, a side of the first cover plate portion 1 away from the building body 100 is connected with a force-bearing portion 15 and a partition steel plate 17 . The partition steel plate 17 is located above the force-bearing portion 15 , and the partition steel plate 17 is fixedly connected to the side surface of the first cover plate portion 1 .

[0059] The partition steel plate 17 can be connected to the first cover plate part 1 through embedded parts, or installed when the first cover plate part 1 is manufactured, specifically, the partition steel plate 17 is embedded in the steel cage of the first cover plate part 1 before concrete is poured and fixed.

[0060] like Figure 4 As shown, the cross section of the force-bearing portion 15 is an I-shaped steel member, so that a gap is left between the partition steel plate 17 and the force-bearing portion 15 .

[0061] The force-bearing part 15 can be connected to the first cover plate part 1 through embedded parts, or installed when the first cover plate part 1 is manufactured, specifically, the force-bearing part 15 is embedded in the steel cage of the first cover plate part 1 before concrete is poured and fixed.

[0062] like Figure 5 and Figure 6 As shown, a load-bearing hollow pipe 16 is connected to the side of the second cover plate portion 2 away from the retaining wall 200 , and the other end of the load-bearing portion 15 away from the first cover plate portion 1 extends into the load-bearing hollow pipe 16 , and the load-bearing portion 15 can slide inside the load-bearing hollow pipe 16 .

[0063] The stress-bearing hollow pipe 16 can be connected to the second cover part 2 through embedded parts, or installed when the second cover part 2 is manufactured, specifically, the stress-bearing hollow pipe 16 is embedded in the steel cage of the second cover part 2 before concrete is poured and fixed.

[0064] Specifically, the force-bearing portion 15 and the force-bearing hollow pipe 16 are made of high-strength steel.

[0065] like Fig.10As shown, the cross-section of the stressed hollow pipe fitting 16 is a hollow I-shape, and a plurality of rollers 4 are provided at both ends of the flange of the stressed portion 15 , and the rollers 4 abut against the interior of the stressed hollow pipe fitting 16 . The purpose of providing the rollers 4 is to make the stressed portion 15 slide more smoothly in the stressed hollow pipe fitting 16 .

[0066] like Figure 5 As shown, a first cantilevered cover plate 18 is provided on one side of the second cover plate portion 2 close to the building body 100 . The first cantilevered cover plate 18 and the second cover plate portion 2 are integrally formed, and the upper surfaces of the first cantilevered cover plate 18 and the second cover plate portion 2 are coplanar.

[0067] A gap is left between the stressed hollow pipe fitting 16 and the first cantilever cover plate 18, and one end of the partition steel plate 17 close to the second cover plate part 2 extends into the gap between the stressed hollow pipe fitting 16 and the first cantilever cover plate 18. The partition steel plate 17 can move repeatedly in the gap between the stressed hollow pipe fitting 16 and the first cantilever cover plate 18 as the stressed part 15 and the stressed hollow pipe fitting 16 slide.

[0068] During design, the cantilever length of the partition steel plate 17 should be the same as the cantilever length of the force-bearing portion 15 .

[0069] like Figure 5 As shown, the function of the partition steel plate 17 is to separate the load-bearing hollow pipe 16 from the first cantilever cover plate 18. Firstly, it can prevent the debris on the upper part of the seismic isolation trench cover plate from falling into the load-bearing part 15 or the load-bearing hollow pipe 16. Secondly, when an unexpected situation occurs, such as an earthquake that is too large and causes the load-bearing part 15 to separate from the load-bearing hollow pipe 16, it is used to support people who may fall into the gap between the first cover plate part 1 and the first cantilever cover plate 18.

[0070] Preferably, when the earthquake is too large, the distance between the first cover plate portion 1 and the second cover plate portion 2 will be larger, and it is possible that the partition steel plate 17 has completely separated from the gap between the load-bearing hollow pipe 16 and the first cantilever cover plate 18, resulting in the partition steel plate 17 being unable to block the gap between the first cover plate portion 1 and the first cantilever cover plate 18. Figure 5 , Figure 8 , Fig.11 As shown, the present invention further designs a telescopic bracket 13 between the first cover plate portion 1 and the second cover plate portion 2 . The telescopic bracket 13 is located above the partition steel plate 17 . The telescopic bracket 13 is connected between the opposite side walls of the first cover plate portion 1 and the first cantilever cover plate 18 .

[0071] like Figure 2 , Figure 5 , Figure 8 and Fig.11As shown, a plurality of supporting cross bars 14 are fixedly connected to the upper surface of the telescopic bracket 13, and the plurality of supporting cross bars 14 are parallel to each other, and the extension direction of the supporting cross bars 14 is consistent with the extension direction of the splicing of the plurality of cover plates. The function of the telescopic bracket 13 is to tie the first cover plate portion 1 and the first cantilever cover plate 18 together, to prevent the force-bearing portion 15 from being separated too quickly from the force-bearing hollow pipe 16 in the event of a large earthquake, and to reduce or increase the distance between the plurality of supporting cross bars 14. The function of the plurality of supporting cross bars 14 is that when a person falls into the gap between the first cover plate portion 1 and the first cantilever cover plate 18, the person's feet can step on the upper part of the plurality of supporting cross bars 14, to prevent the feet from falling directly into the telescopic bracket 13 and being pinched.

[0072] Preferably, Fig.11 As shown, a retractable rod 10 should be embedded between the multiple support cross bars 14. The retractable rod 10 can be extended and retracted in coordination with the extension and retraction of the retractable bracket 13. Its function is to cooperate with the multiple support cross bars 14 to form a mesh structure to prevent people's feet from falling.

[0073] Preferably, Figure 6 As shown, a second force-holding connector 9 is provided in the middle of the lower end surface of the second cover plate portion 2, and a first force-holding connector 8 is provided in the middle of the lower end surface of the first cover plate portion 1. The second force-holding connector 9 and the first force-holding connector 8 are actually metal connectors, which can be pre-buried in the lower parts of the second cover plate portion 2 and the first cover plate portion 1. A tension-compression damper 5 is fixedly connected between the second force-holding connector 9 and the first force-holding connector 8. When the first cover plate portion 1 and the second cover plate portion 2 tend to move away from or approach each other during an earthquake, the tension-compression damper 5 can dissipate seismic energy and generate tension to prevent the force-bearing portion 15 from detaching from the force-bearing hollow pipe 16 too quickly.

[0074] like Figure 2 As shown, the end of the second cover plate part 2 away from the building body 100 is fixedly connected to the retaining wall 200, and a tripod bracket 6 is provided on both sides of the second force-holding connector 9 at the lower part of the second cover plate part 2, and the upper top surface of the tripod bracket 6 abuts against the lower surface of the second cover plate part 2. The part of the tripod bracket 6 close to the retaining wall 200 is fixedly connected to the retaining wall 200.

[0075] More preferably, the upper surface of the tripod support 6 is provided with a rubber cushion layer.

[0076] like Figure 1 and Figure 8 As shown, in the present invention, a first cover plate part 1 and a second cover plate part 2 form a set of cover plates, and multiple sets of cover plates need to be arranged side by side in actual use. The L-shaped steel cover plates 3 above each set of cover plates should be close to each other to ensure that the gap is less than 20 mm, and waterproof tarpaulins are used to cover between every two adjacent L-shaped steel cover plates 3. The waterproof tarpaulins are bonded to the upper part of the L-shaped steel cover plates 3 with organic glue to prevent sand and soil from entering the gap between the two adjacent L-shaped steel cover plates 3 during normal use.

[0077] Preferably, a sliding layer is provided on the lower surface of the long limb of the L-shaped steel cover plate 3, and the sliding layer is made of one of polytetrafluoroethylene, modified polytetrafluoroethylene, ultra-high molecular weight polyethylene and ultra-high performance polytetrafluoroethylene. The function of the sliding layer is to make the long limb of the L-shaped steel cover plate 3 and the upper surface of the second cover plate part 2 slide faster when an earthquake occurs, and avoid making a harsh sound, thereby avoiding increasing panic among people.

[0078] Specifically, the long limb of the L-shaped steel cover plate 3 is the portion covering the first cover plate portion 1 and the second cover plate portion 2 .

[0079] like Fig. 9 As shown, protruding first support plates 11 are provided on both sides of the first cover plate portion 1, and first teeth are provided on the surface of the first support plate 11. The two adjacent first cover plate portions 1 are alternately connected by the first teeth. The function of the first teeth is to ensure that the adjacent first cover plate portions 1 do not separate, but can undergo relative displacement in the direction perpendicular to the building outline. This is because the displacement of adjacent cover plates in the same direction during an earthquake is not uniform, and there will always be a small displacement difference, so the first teeth need to be provided.

[0080] Similarly, if Figure 1 As shown, protruding second support plates 12 are provided on both sides of the second cover plate portion 2, and second teeth are provided on the surface of the second support plate 12. The two adjacent second cover plate portions 2 are alternately connected by the second teeth. The function of the second teeth is to ensure that the adjacent first cover plate portions 1 do not separate, but can undergo relative displacement in the direction perpendicular to the building outline. This is because the displacement of adjacent cover plates in the same direction during an earthquake is not uniform, and there will always be a slight displacement difference, so the second teeth need to be provided.

[0081] like Fig.12 As shown, in a specific design, the length of the second support plate 12 when it is at the upper part of the second cover plate portion 2 is greater than the length of the second support plate 12 when it is at the lower part of the second cover plate portion 2.

[0082] Specifically, the length of the second support plate 12 at the lower part of the second cover plate portion 2 shall not be greater than the projected length of the lower bottom surface of the second cover plate portion 2 along the extension direction of the seismic isolation trench cover plate, otherwise a portion of the second support plate 12 will be a cantilevered area in the vertical direction of the building outer contour, which is not conducive to the force support of the second support plate 12. Moreover, the force-bearing steel bars inside the second support plate 12 can be directly made by extending the horizontal force-bearing steel bars at the bottom of the second cover plate portion 2.

[0083] like Figure 7As shown, the length of the second support plate 12 when it is on the upper part of the second cover plate portion 2 is the same as the projected length of the second cover plate portion 2 and the first cantilever cover plate 18 along the length extension direction of the seismic isolation trench cover plate. Firstly, there is no gap between adjacent second cover plate portions 2 to prevent gravel from falling into the force-bearing portion 15 or the force-bearing hollow pipe 16. At the same time, the force-bearing steel bars inside the second support plate 12 can be directly extended from the second cover plate portion 2 and the upper horizontal force-bearing steel bars in the first cantilever cover plate 18, so that the second support plate 12 is easy to manufacture.

[0084] Specifically, the first support plate 11 and the second support plate 12 are both concrete components. The steel bars inside the first support plate 11 and the second support plate 12 can be obtained by extending the horizontal stress-bearing steel bars at the top or bottom of the first cover plate portion 1 and the second cover plate portion 2, so that the first support plate 11 and the second support plate 12 have sufficient stress-bearing support strength. The principle of extending the upper or lower stress-bearing steel bars in the reinforced concrete slab to serve as the stress-bearing steel bars of the first support plate 11 and the second support plate 12 should be known to professionals in the field, and belongs to the part of material mechanics and reinforced concrete structure design principles, and will not be described in detail here.

[0085] The basic working principle of the present invention is as follows: Figure 2 As shown, the first cover plate part 1 is fixedly connected to the building body 100, and the second cover plate part 2 is fixedly connected to the retaining wall 200. During an earthquake, the first cover plate part 1 and the second cover plate part 2 will move relative to each other, and adjacent first cover plate parts 1 or adjacent second cover plate parts 2 can be relatively displaced to ensure that the entire seismic isolation trench cover plate will not be damaged by internal collision. In addition, the first cover plate part 1 and the second cover plate part 2 are separated during a strong earthquake to protect the safety of personnel.

[0086] The design of multiple sets of cover plates and the splicing form of adjacent cover plate parts enable the cover plate structure to adopt standardized components and construction processes during the construction process, which is convenient for on-site installation and construction, improves construction efficiency, and ensures construction quality. At the same time, this standardized design is also conducive to the production and batch production of prefabricated components, reducing production costs.

[0087] Since the connection method of each part of the cover plate structure is relatively simple, and the arrangement of components such as the force-bearing part 15 and the partition steel plate 17 is convenient for observation and inspection, once the cover plate structure is found to be damaged or abnormal during use, it can be repaired and replaced in time.

[0088] The seismic isolation trench cover structure of the seismic isolation building designed by the present invention can be used for newly built buildings or buildings that have been built but have construction errors. For newly built buildings, the seismic isolation trench cover structure is constructed simultaneously with the construction of the building body 100 and the retaining wall 200; for buildings that have been built but have construction errors, if the area of ​​the seismic isolation trench cover away from one end of the building body 100 is made into a reinforced concrete structure, the original seismic isolation trench cover can be cut off from the side of the building body 100, and then the seismic isolation trench cover of the present application can be connected to the building body 100 and the retaining wall 200 respectively by using embedded reinforcement connection.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A seismic isolation trench cover structure for a seismic isolation building, characterized in that: It comprises a plurality of groups of cover plates, each group of cover plates comprises a first cover plate portion (1), a second cover plate portion (2) and an L-shaped steel cover plate (3); during construction, the first cover plate portion (1) is fixedly connected to the building body (100), the second cover plate portion (2) is fixedly connected to the retaining wall (200), and the L-shaped steel cover plate (3) covers the first cover plate portion (1) and the second cover plate portion (2); Two adjacent first cover plate parts (1) are connected in a splicing manner, and two adjacent second cover plate parts (2) are connected in a splicing manner; the connection extension direction of the first cover plate parts (1) is parallel to the connection extension direction of the second cover plate parts (2); A side of the first cover plate portion (1) away from the building body (100) is connected to a force-bearing portion (15) and a partition steel plate (17), the partition steel plate (17) is located above the force-bearing portion (15), and the partition steel plate (17) is fixedly connected to a side surface of the first cover plate portion (1); A load-bearing hollow pipe member (16) and a first cantilevered cover plate (18) are connected to a side of the second cover plate portion (2) away from the retaining wall (200); the other end of the load-bearing portion (15) away from the first cover plate portion (1) extends into the load-bearing hollow pipe member (16); and the load-bearing portion (15) is capable of sliding in the load-bearing hollow pipe member (16); The first cantilevered cover plate (18) and the second cover plate portion (2) are fixedly connected as one body, and the upper surfaces of the first cantilevered cover plate (18) and the second cover plate portion (2) are coplanar; The load-bearing hollow pipe member (16) is arranged below the first cantilever cover plate (18), and a gap is left between the load-bearing hollow pipe member (16) and the first cantilever cover plate (18), and one end of the partition steel plate (17) close to the second cover plate portion (2) extends into the gap, and the partition steel plate (17) can slide in the gap.

2. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: The upper surface of the first cover plate portion (1) is prefabricated with a long mounting groove (7), and the long mounting groove (7) is used to fix the L-shaped steel cover plate (3).

3. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: The cross section of the force-bearing part (15) is an I-shaped steel part, the cross section of the force-bearing hollow pipe part (16) is a hollow I-shaped part, and a plurality of rollers (4) are arranged on the flange of the force-bearing part (15), and the rollers (4) are in contact with the force-bearing part (15).

4. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: A telescopic bracket (13) is also provided between the first cover plate portion (1) and the second cover plate portion (2). The telescopic bracket (13) is located above the partition steel plate (17). The telescopic bracket (13) is connected between the first cover plate portion (1) and the opposite side walls of the first cantilever cover plate (18).

5. The seismic isolation trench cover structure of a seismic isolation building according to claim 4, characterized in that: A plurality of supporting cross bars (14) are fixedly connected to the upper surface of the telescopic bracket (13), and the plurality of supporting cross bars (14) are parallel to each other.

6. The seismic isolation trench cover structure of a seismic isolation building according to claim 5, characterized in that: A telescopic rod (10) is also embedded between the plurality of supporting cross bars (14), and the telescopic rod (10) is connected to the supporting cross bars (14) to form a mesh structure.

7. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: A first force-holding connection member (8) is provided on the lower end surface of the first cover plate portion (1), a second force-holding connection member (9) is provided on the lower end surface of the second cover plate portion (2), and a tension-compression damper (5) is fixedly connected between the first force-holding connection member (8) and the second force-holding connection member (9).

8. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: A waterproof tarpaulin is used to cover between every two adjacent L-shaped steel cover plates (3), and the waterproof tarpaulin is bonded and fixed to the L-shaped steel cover plates (3).

9. The seismic isolation trench cover structure of a seismic isolation building according to claim 1, characterized in that: Protruding first support plates (11) are provided on both sides of the first cover plate portion (1), first teeth are provided on the surface of the first support plate (11), and two adjacent first cover plate portions (1) are alternately connected via the first teeth; Protruding second support plates (12) are provided on both sides of the second cover plate portion (2), second teeth are provided on the surface of the second support plate (12), and two adjacent second cover plate portions (2) are alternately connected via the second teeth.

10. The working method of the seismic isolation trench cover structure of the seismic isolation building according to any one of claims 1 to 9, characterized in that: The process includes: When an earthquake occurs, the distance between the building body (100) and the retaining wall (200) will change due to shaking, causing the force-bearing part (15) to slide in the force-bearing hollow pipe (16), driving the partition steel plate (17) to slide in the gap between the force-bearing hollow pipe (16) and the first cantilever cover plate (18); This causes relative movement between the first cover plate portion (1) and the second cover plate portion (2), and relative displacement between adjacent first cover plate portions (1) or adjacent second cover plate portions (2).

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