Anti-seismic stone curtain wall deformation joint structure and working method thereof

Abstract

This invention provides a seismic-resistant stone curtain wall expansion joint structure and its working method, which can meet seismic deformation requirements of 500mm or more and is applicable to expansion joints of various sizes. In terms of seismic resistance, it can accommodate front-to-back and left-to-right displacement, ensuring that the expansion joint panel is made of the same stone as the two sides, while also addressing the issue of easy maintenance. The stone panel is fixed to a hanger; a sliding groove is provided on the crossbeam, and a bolt assembly is slidably positioned in the groove, connecting the hanger to the crossbeam; a steel ball is placed between the hanger and the sliding groove; limit angle brackets are provided on both sides of the hanger, fixed to the hanger, with the steel ball located between the limit angle brackets on both sides; limit angle brackets are provided on both sides of the sliding groove, fixed to the crossbeam; a seismic spring is provided on the side of the hanger near the expansion joint, with one end of the spring attached to the hanger and the other end attached to the crossbeam; a buffer assembly is provided between the two stone panels on both sides of the expansion joint.

Description

Technical Field

[0001] This invention relates to a structure and working method for an earthquake-resistant stone curtain wall expansion joint. Background Technology

[0002] In existing technologies, such as the National Building Standard Design Atlas 14J936 "Building Construction of Expansion Joints," the device for expansion joints in seismic-resistant stone curtain walls mainly consists of seismic deformation components and an aluminum alloy central cover plate. Its characteristic is that, from an appearance perspective, the outer surface of the expansion joint is made of aluminum alloy, a different material from the stone panels on both sides. Another type of cover plate-type expansion joint device for stone curtain walls mainly consists of non-seismic deformation components and an aluminum alloy cover plate, suitable for non-seismic expansion joints. Its characteristic is that, from an appearance perspective, the outer surface of the expansion joint is made of aluminum alloy, a different material from the stone panels on both sides, and the aluminum alloy cover plate protrudes beyond the stone curtain wall. Both of the above-mentioned expansion joint structures have the following shortcomings: The expansion joint cover plate is made of aluminum alloy, which is a different material from the stone panels on both sides, resulting in a significant difference in appearance. Even if the aluminum alloy expansion joint cover plate can be made to resemble the stone panel in color through surface treatment, there are still considerable differences in gloss and texture. This is especially true for non-seismic expansion joints, where the aluminum alloy cover plate protrudes beyond the stone curtain wall, making the difference even more obvious. These two expansion joint structures are insufficient to meet the actual needs of important buildings, especially landmark buildings, that have high requirements for appearance. Furthermore, these two expansion joint structures can only accommodate a maximum expansion joint width of 500mm, which limits the applicable width. Another national building standard design atlas, 03J103-2~7 "Building Curtain Walls," only includes expansion joint nodes, and the maximum deformation width is only 30-50mm, which is insufficient to meet the needs of expansion joints of various widths.

[0003] Chinese invention patent application number 201811597226.9 discloses a high-performance connection structure for expansion joints in stone curtain walls. This invention adopts a structure roughly similar to the earthquake-resistant stone curtain wall expansion joint structure used in the national building standard design atlas 14J936 "Expansion Joint Building Construction". Through a more complex deformation connection mechanism, the expansion joint cover plate is optimized into a stone panel, achieving uniformity between the expansion joint panel material and the materials on both sides. Furthermore, this invention has wide applicability, combining expansion, settlement, and seismic resistance functions, representing a significant improvement over previous earthquake-resistant stone curtain wall expansion joint structures. However, this device also has some shortcomings, mainly: First, the mutually fixed stone panel and stone back plate are connected to the seismic components via shaped bolts. These shaped bolts are perpendicular to the stone panel and stone back plate, i.e., perpendicular to the direction of gravity, and the line connecting the shaped bolts is a vertical straight line. This design lacks lateral anchor points, making it relatively weak in resisting horizontal forces such as wind pressure and earthquakes. Furthermore, the force-transmitting components are largely on a vertical plane, resulting in a planar force transmission path. This leads to strong in-plane stiffness but weak out-of-plane stiffness, relatively weak torsional resistance, and overall stability that needs improvement. Moreover, this defect becomes more pronounced with larger stone panels. Secondly, due to the aforementioned structural characteristics and the significant weight of the stone, the applicable width of the expansion joint in this type of earthquake-resistant stone curtain wall is limited; it cannot be too wide, otherwise, long-term use, especially after an earthquake, would pose a significant safety hazard. Thirdly, for some complex earthquakes, in addition to lateral expansion and contraction, there are also significant forward and backward displacements. This type of earthquake-resistant stone curtain wall expansion joint structure, due to the aforementioned structural characteristics, is difficult to adapt to and may be prone to torsional failure or instability. Finally, the width of the expansion joint structure itself is difficult to match the width of the stone panels on both sides, and the relatively wide gaps between the expansion joint structure and the stone curtain wall panels on both sides for deformation are aesthetically unappealing. Finally, once the expansion joint structure of this type of earthquake-resistant stone curtain wall is damaged, it is inconvenient to disassemble and replace it. When replacing it, the expansion joint structure at the highest point of the building must be disassembled and replaced one by one. In some cases, if the L-shaped corner bracket or adapter is damaged, the stone panels on the left and right sides must be removed before the stone curtain wall expansion joint structure can be disassembled and replaced. The maintenance workload is large and the cost is high.

[0004] Of course, the aforementioned patent is not the only one that uses a similar structure to solve the problem of optimizing expansion joint covers into stone panels. Their common feature is that the expansion joint structure is independent of the stone curtain wall systems on both sides. When the expansion joint shrinks, the stone panel at the expansion joint slides relative to the stone panels on both sides until it protrudes beyond them, thus allowing unrestricted deformation. The differences lie in the types of components and the connection structure with the stone panels. Currently, in high-requirement buildings in areas with high wind pressure and frequent earthquakes, spring devices may be used when connecting the curtain wall to the main structure to accommodate minor lateral displacements of approximately 10mm caused by external forces, preventing damage to the curtain wall. However, this approach is only suitable for buildings without seismic joints. When seismic joints are required, additional seismic joint devices must be installed; otherwise, the minimum width of seismic joints (generally 100mm) and the maximum width (500mm and above) cannot be met. Furthermore, this approach also cannot meet the requirements for temperature joints and settlement joints.

[0005] In summary, the existing technology for earthquake-resistant stone curtain wall expansion joint structures has several problems, including the need to improve stability, the lack of suitable expansion joint structures for earthquake-resistant stone curtain walls with a width of 500mm or more, limitations in adapting to complex earthquakes, aesthetic defects, and inconvenience in replacement. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned deficiencies in the prior art and to provide a structurally sound earthquake-resistant stone curtain wall expansion joint structure and its working method. It can meet the earthquake deformation requirements of a width of 500mm or more and is applicable to various sizes of expansion joints. It also has expansion, settlement and earthquake resistance functions. In terms of earthquake resistance, it can meet the displacement in the front, back and left and right directions, ensure that the expansion joint panel is made of the same stone as the two sides, meet the aesthetic requirements, and solve the problem of easy maintenance.

[0007] The technical solution adopted by this invention to solve the above problems is: a seismic-resistant stone curtain wall expansion joint structure, comprising a curtain wall keel, stone panels, and seismic-resistant components; the curtain wall keel includes horizontal beams and vertical columns, which are fixed together; the seismic-resistant components include hangers, and the stone panels are fixed to the hangers; characterized in that: The seismic-resistant component also includes limiting angle bracket one, limiting angle bracket two, a seismic-resistant spring, and a buffer component; the crossbeam is provided with a sliding groove, which is set along the left and right sides, and the bolt group is slidably set in the sliding groove, and the bolt group connects the hanger to the crossbeam, so that the hanger is slidably set on the crossbeam; a steel ball is set between the hanger and the sliding groove; the hanger is provided with limiting angle bracket one on the left and right sides, and the limiting angle bracket one is fixed on the hanger, with the steel ball located between the limiting angle bracket one on both sides; limiting angle bracket two is provided on both sides of the sliding groove, and the limiting angle bracket two is fixed on the crossbeam; a seismic-resistant spring is provided on the side of the hanger near the expansion joint, which is set along the left and right sides, with one end of the seismic spring set on the hanger and the other end hung on the crossbeam; a buffer component is provided between the two stone panels on both sides of the expansion joint, and the buffer component includes an elastic rubber strip one, which is fixed on one side of the stone panel.

[0008] The limiting angle code II of the present invention is provided with a buffer rubber strip on the side near the sliding groove.

[0009] The present invention has bolt holes on the outer side near the crossbeam, and round head bolts are installed in the bolt holes facing upwards, with the round head bolts contacting the crossbeam.

[0010] The crossbeam of the present invention is fixed with a hook connector, and the other end of the anti-vibration spring is hung on the hook connector.

[0011] The elastic rubber strip of the present invention is fixed to one side of the stone panel using a rubber strip fixing member.

[0012] The adhesive strip fastener of the present invention has a flange plate on one side, which is fixed to the back of the stone panel on one side. An elastic adhesive strip is embedded in the adhesive strip fastener. After a pin passes through the elastic adhesive strip and the adhesive strip fastener, it is inserted into the side of the stone panel to fix the elastic adhesive strip on the stone panel on that side.

[0013] The gap between the outer side of the elastic strip and the stone panel of the present invention is sealed with sealant, and an elastic strip protrusion is provided on the outer side of the elastic strip.

[0014] The buffer assembly of the present invention further includes an elastic rubber strip II, which is disposed at the inner corner of the two stone panels on both sides of the expansion joint.

[0015] The present invention provides a waterproof gusset plate on the expansion joint.

[0016] A method for constructing expansion joints in earthquake-resistant stone curtain walls, characterized by the following steps: When an earthquake occurs, three scenarios can occur on the left and right sides of the expansion joint: separation displacement, mutual displacement, and same-direction displacement. When separation displacement occurs, as the expansion joint widens, the main building structure and curtain wall joists, as a fixedly connected system, move together towards the side away from the expansion joint. The seismic-resistant components and stone panels, as another fixedly connected system, lag behind the main building structure and curtain wall joists due to their inherent inertia. This characteristic causes the seismic springs to compress. After a certain degree of compression, the seismic-resistant components and stone panels move along with the main building structure and curtain wall joists. Once the expansion joint widens to a certain extent, it begins to narrow, resulting in mutual displacement. After the displacement shrinks to a certain extent, the seismic springs return to their initial state. As the expansion joint shrinks further, the seismic springs become stretched, and when the expansion joint width is at its minimum, the seismic springs are stretched to their limit. When unidirectional displacement occurs, the main building structure and curtain wall keel assembly system on both sides of the expansion joint, as well as the seismic components and stone panel assembly system, all displace in the same direction. The seismic springs in the seismic components on one side are compressed, while the seismic springs in the seismic components on the other side are stretched. When the unidirectional displacement changes direction, the deformation states of the seismic springs on both sides are opposite. Throughout the earthquake, these types of displacement will continue as the earthquake continues until it ends.

[0017] Compared with the prior art, the present invention has the following advantages and effects: 1. Because this invention adopts a different approach than the previous method of separating the expansion joint structure from the stone curtain wall system on both sides, it decomposes the stone curtain wall system on both sides of the expansion joint into two main systems: the main structure and the curtain wall keel assembly system and seismic components, and the stone panel assembly system. Each system is internally fixed and connected, but can adapt to external deformation and make relative displacements. At the same time, limiting devices and buffer devices are set up. The entire expansion joint structure has stronger deformation capacity and higher stability.

[0018] 2. The length adjustment of the groove on the crossbeam can well meet the seismic deformation of the expansion joint structure of the earthquake-resistant stone curtain wall with a width of 500mm or more. Such earthquake-resistant stone curtain wall expansion joint structures that can meet this width requirement are rarely seen. At the same time, this invention is also applicable to expansion joints with a width of 500mm or less.

[0019] 3. This invention has the functions of expansion, settlement and earthquake resistance, and can meet the displacement in front, back and left and right in terms of earthquake resistance, with good adaptability and deformation flexibility.

[0020] 4. Because the present invention adopts the above-mentioned technical solution, the expansion joint structure is dispersed on individual seismic components. There is no expansion joint structure and panel independent of the stone curtain wall system on both sides. Therefore, its appearance is the same as the facade without expansion joints. Both are uniform stone panels. Moreover, the width of the stone panel at the expansion joint can be made consistent with the two sides by adjusting the position of the sliding groove and hanging parts on the angle steel beam and adjusting the width of the stone panel. It has good aesthetics and can be widely used in various projects with high facade requirements.

[0021] 5. One of the features of this invention is the installation of an anti-seismic spring on one side of the anti-seismic component. Under the premise of ensuring the fatigue life and safety factor of the anti-seismic spring meet the design service life, and with the combined action of the limiting device and the buffer device, unless a rare earthquake occurs, the probability of significant problems occurring in the entire curtain wall system is very small, resulting in good safety and durability. In most cases after an earthquake, the sealing strip between the two rows of stone curtain walls at the deformation joint of the main structure and the stone panel at the corner on the other side away from the deformation joint may crack on one side. This can be easily resolved by resealing with sealant. Therefore, this invention is convenient to maintain and requires minimal maintenance.

[0022] 6. The technical solution of this invention is applicable not only to expansion joints in stone curtain walls, but also to expansion joints in other non-metallic opaque curtain walls using a keel system (non-metallic transparent curtain walls, such as glass curtain walls, are not applicable because the structural relationship between the keel and the glass panel differs from that of stone curtain walls). The main difference lies in the possible variations in the structure of the hanging components, but anti-seismic springs can be used between the hanging components and the keel to address the seismic deformation problem of the curtain wall. Therefore, this invention has broad applicability and is suitable for widespread promotion.

[0023] The fundamental difference between this invention and existing technologies lies in their approach. Existing earthquake-resistant stone curtain wall expansion joint patents all employ a method that separates the expansion joint structure from the stone curtain wall systems on both sides. The main differences between these and the earthquake-resistant stone curtain wall expansion joint structure in the National Building Standard Design Atlas 14J936 "Expansion Joint Building Construction" are: the main earthquake-resistant components are earthquake-resistant springs perpendicular to the stone panels; other components, while more complex than those in the atlas, are merely for better connection and support of the heavier stone panels (compared to aluminum alloy panels). From an overall conceptual standpoint, there is no fundamental breakthrough. In contrast, this invention is completely different in its approach from conventional stone curtain wall expansion joint patents, exhibiting entirely different technical characteristics, and achieving superior appearance and performance compared to conventional stone curtain wall expansion joint patents. Attached Figure Description

[0024] Figure 1 This is a partial isometric structural schematic diagram of an embodiment of the present invention; Figure 2This is a schematic diagram of the planar structure of an embodiment of the present invention; Figure 3 This is a partial structural schematic axonometric view of an embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of the axonal structure of section A; Figure 5 This is a partial planar enlarged structural diagram of an embodiment of the present invention; Figure 6 for Figure 3 A schematic diagram of the front elevation of section A; Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure of section I-I; Figure 8 for Figure 5 Schematic diagram of the cross-sectional structure of section II-II; Figure 9 for Figure 5 A magnified structural diagram of part B in the middle section; Figure 10 for Figure 5 A schematic diagram of the rear axonometric structure of section B. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0026] I. The earthquake-resistant stone curtain wall expansion joint structure of this invention includes a curtain wall keel, earthquake-resistant components, stone panel 7 and waterproof gusset plate 24.

[0027] The curtain wall keel includes horizontal beams 1 and columns 5. Horizontal beams 1 are fixed to connecting brackets 4 with bolts, and connecting brackets 4 are welded to columns 5, thus fixing horizontal beams 1 and columns 5 together. The curtain wall keel itself, as well as the connection between columns 5 and the main structure, are the same as the connection method of conventional stone curtain walls, and will not be described in detail here.

[0028] The seismic-resistant components include bolt group 2, hanger 6, steel ball 8, limit angle bracket 1 9, self-tapping screw 10, limit angle bracket 2 11, hook connector 12, seismic-resistant spring 13, buffer rubber strip 14, and buffer component 3.

[0029] The hanger 6 is installed on the crossbeam 1. The hanger 6 of the present invention differs from the hanger of conventional stone curtain walls in that: conventional stone curtain walls fix the hanger to the crossbeam 1 with bolts and tighten them; while the hanger 6 of the present invention is slidably set on the crossbeam 1 to ensure that the hanger 6 can move left and right when the expansion joint 25 undergoes expansion and contraction deformation due to earthquakes, etc. Furthermore, a sliding groove 1-1 is provided on the crossbeam 1, which is arranged along the left and right sides. The bolt group 2 is slidably arranged in the sliding groove 1-1, and the bolt group 2 connects the hanger 6 to the crossbeam 1 together, so that the hanger 6 can slide left and right on the crossbeam 1, and the stone panel 7 is fixed on the hanger 6. Furthermore, steel balls 8 are arranged between the hanger 6 and the sliding groove 1-1, which are used to ensure that the hanger 6 can move left and right with the rolling of the steel balls 8 when the expansion joint 25 undergoes expansion and contraction deformation due to earthquakes, etc. Each hanger 6 is equipped with three steel balls 8, which are located between the bolt groups 2 and on its left and right sides respectively. The tightness of the nuts on the bolt group 2 should be sufficient to allow the steel balls 8 to roll flexibly.

[0030] To ensure the stability of the hanger 6 when moving left and right, a hanger bolt hole 6-1 is provided on the outer side of the hanger 6 near the crossbeam 1. A round-head bolt 21 and an adjusting shim 22 are inserted into the bolt hole 6-1 with the head facing upwards, and the round-head bolt 21 contacts the crossbeam 1. By adjusting the round-head bolt 14 and the adjusting shim 15, the hanger 6 can be kept on a horizontal plane, and the friction of the hanger 6 can be appropriately increased to prevent it from becoming too loose when sliding left and right.

[0031] When the components of the hanger 6 are connected, elastic gaskets 23 are installed between the gaps of each component to ensure that the entire stone curtain wall system avoids rigid contact and transmission when it is subjected to vibrations caused by external forces such as earthquakes and wind loads, and can fully absorb vibration energy to effectively reduce the destructive effect of external forces.

[0032] To ensure the operational safety of the entire expansion joint 25 structure, the hanger 6 is equipped with limiting angle brackets 9 on both the left and right sides. The limiting angle brackets 9 are fixed to the upper surface of the hanger 6 with self-tapping screws 10. The head of the self-tapping screw 10 should not protrude from the lower surface of the hanger 6. The steel ball 8 is located between the limiting angle brackets 9 on both sides. In this way, the steel ball 8 can be limited to the range of the hanger 6 when it rolls.

[0033] Limiting angle brackets 211 are set on both sides of the slide 1-1 and are fixed to the crossbeam 1 by welding. A buffer rubber strip 14 is also set on the side of the limiting angle brackets 211 near the slide 1-1. In this way, when the hanging part 6 is displaced to the end of the slide 1-1, the limiting angle brackets 211 and the buffer rubber strip 14 can effectively play the role of limiting and vibration isolation.

[0034] To effectively accommodate external deformations such as earthquakes, this invention incorporates an anti-seismic spring 13 on the side of each hanger 6 near the expansion joint 25. The anti-seismic spring 13 is the core component of this invention and a significant feature distinguishing it from other earthquake-resistant stone curtain wall expansion joint 25 structures. The anti-seismic spring 13 is positioned horizontally, with one end hooked into the hook hole 6-2 of the hanger 6. A hook connector 12 is welded and fixed to the crossbeam 1, and the other end of the anti-seismic spring 13 is hooked into the hook hole 12-1 of the hook connector 12. Thus, the other end of the anti-seismic spring 13 is positioned on the crossbeam 1.

[0035] Furthermore, the present invention provides a buffer component 3 between the stone panels 7 on both sides of the expansion joint 25. The buffer component 3 can reduce the size of the expansion joint 25 during an earthquake, thereby consuming the seismic energy when the stone panels 7 on both sides are compressed, and preventing the two stone panels 7 from being rigidly contacted and damaged. The cushioning component 3 includes an elastic rubber strip 15 and an elastic rubber strip 2 19.

[0036] The elastic rubber strip 15 is fixed to the stone panel 7 on one side using the rubber strip fixing component 16 and the pin 18. Specifically, the rubber strip fixing component 16 has a flange plate 16-1 on one side. The flange plate 16-1 is fixed to the back of the stone panel 7 on one side using two pins 17. When fixing, the pointed part of the pin 17 should be tilted downwards to effectively prevent the buffer component 3 from falling off. The elastic rubber strip 15 is embedded in the rubber strip fixing component 16. The pin 18 passes through the elastic rubber strip 15 and the rubber strip fixing component 16 and is inserted into the side of the stone panel 7 to fix the elastic rubber strip 15 on the stone panel 7 on that side. The depth of the pin hole should be close to the length of the pin 18 so that the pin 18 is not obstructed when the elastic rubber strip 15 is compressed. The recessed gap between the outer side of the elastic strip 15 and the stone panel 7 is sealed with sealant 20. A long, narrow elastic strip protrusion 15-1 is provided on the outer side of the elastic strip 15 to strengthen the bond with the sealant 20. When the expansion joint 25 widens during an earthquake, causing the two stone panels to separate, the buffer assembly 3, fixed to the back of one side of the stone panel 7 by pin 17 and to the side of the other side of the stone panel 7 by pin 28, will not fall off. Instead, it will separate from the other side of the stone panel 7 and move along with it. As the two stone panels 7 gradually return to their original position and are further compressed, it provides effective cushioning and continues to provide cushioning throughout the earthquake.

[0037] In addition, to prevent damage to the corners of the stone panel 7 caused by complex earthquakes that involve both expansion and contraction displacement and front-to-back displacement (generally, the front-to-back displacement is much smaller than the expansion and contraction displacement), elastic adhesive strips 2 19 are installed on the inner corners of the stone panels 7 on both sides. In addition to being bonded and fixed to the stone panel 7, the elastic adhesive strips 2 19 are also fixed with pins 17 to ensure a firm bond with the stone panel 7.

[0038] Thus, through reasonable and necessary limiting and buffering measures, combined with the internal force driving and buffering effect of the seismic spring 13, the stability and safety of the stone curtain wall system during an earthquake are effectively guaranteed. On the other hand, for the main structure, the stone curtain wall system acts as a damper during an earthquake, which plays a positive role in consuming seismic energy and reducing the destructive effect of the earthquake.

[0039] In addition, a waterproof gusset plate 24 is installed on the expansion joint 25, which effectively ensures the waterproof performance of the stone curtain wall during normal use.

[0040] II. The working method of the earthquake-resistant stone curtain wall expansion joint structure according to the present invention includes the following process: When an earthquake occurs, the expansion joint 25 can experience three types of displacement: separation displacement, opposing displacement, and unidirectional displacement. When separation displacement occurs, as the expansion joint 25 widens, the main building structure and curtain wall joists, as a fixedly connected system, move away from the expansion joint 25. The seismic-resistant components and stone panels, as another fixedly connected system, lag behind the main building structure and curtain wall joists due to their inherent inertia. This causes the seismic-resistant spring 13 to compress. After a certain degree of compression, the seismic-resistant components and stone panels move along with the main building structure and curtain wall joists. After the expansion joint 25 widens to a certain extent, it begins to narrow, resulting in opposing displacement. After narrowing to a certain extent, the seismic-resistant spring 13 returns to its initial state. As the expansion joint 25 further narrows, the seismic-resistant spring 13 becomes stretched, reaching its limit when the width of the expansion joint 25 is at its minimum. When unidirectional displacement occurs, the main building structure, curtain wall keel assembly system, seismic components, and stone panel assembly system on both sides of the expansion joint 25 all displace in the same direction. On one side, the seismic spring 13 in the seismic component is compressed, while on the other side, it is stretched. When the unidirectional displacement changes direction, the deformation states of the seismic springs 13 on both sides are reversed. Throughout the earthquake, these displacement patterns continue until the earthquake ends, at which point the seismic springs 13 and the entire stone curtain wall system return to their initial state. It should be noted that because each hanger 6 is equipped with limiting angle bracket 19, limiting angle bracket 21, and buffer strip 14 on both sides, and buffer components 3 are installed between the stone panels 7 near the expansion joint 25, these components work closely together to effectively ensure the stability and safety of the entire stone curtain wall system during the earthquake.

[0041] The key points of this invention are as follows: 1. The seismic spring 13 should be a compression-tension composite spring. The stiffness and damping characteristics of the seismic spring 13 should be controlled within a reasonable range, so that the tension of the seismic spring 13 matches the rate of earthquake deformation. A further technical solution is to match seismic springs 13 with different stiffness and damping characteristics for different seismic fortification intensities and different sizes of stone panels 7, so that the seismic spring 13 can perform optimally in each deformation joint 25 structure. 2. The safety factor of the seismic spring 13 should ensure that the maximum working load during tension (i.e., the load borne by the seismic spring 13 when the hanger 6 is displaced to the limiting angle bracket 11 on the side away from the deformation joint 25) is less than 80% of the ultimate load. Its corrosion resistance and applicable ambient temperature range should meet the requirements of the project's design service life, so that the seismic spring 13 always has good working performance within the project's design service life. III. The anti-seismic spring 13 is equipped with anti-detachment open hooks at both ends, ensuring both quick installation and stable and secure suspension of the spring on the hook holes during operation, thus guaranteeing the stability and safety of the anti-seismic spring 13 during operation. IV. The length of the slide groove 1-1 should meet the required dimensions for deformation of the expansion joint 25; the reserved length of the slide groove 1-1 on the side closest to the expansion joint 25 should be greater than the difference between the free length and the compressed length of the anti-seismic spring 13; when anti-seismic components are installed on both sides of the expansion joint 25, the reserved length of the slide groove 1-1 on the side furthest from the expansion joint 25 should be greater than 1 / 2 of the design compression amount of the main structure of the expansion joint 25; when anti-seismic components are installed on only one side of the expansion joint 25, the reserved length of the slide groove 1-1 on the side furthest from the expansion joint 25 should be greater than the design compression amount of the main structure of the expansion joint 25. V. Each stone panel 7 on the side closest to the expansion joint 25 needs to be equipped with 3-4 adhesive strip fasteners 16 according to its height to ensure the working stability of the buffer component 3 installed between the stone panels 7 on both sides of the expansion joint 25. VI. The remaining requirements of this invention and the general requirements of relevant specifications for seismic fortification of stone curtain walls will not be repeated here.

[0042] The technical requirements for long-term reliability of this invention are as follows: 1. After natural disasters such as earthquakes, typhoons, and fires, a comprehensive inspection should be carried out on the stone panels 7, elastic strips 15, sealant 20, etc., and any damage should be repaired promptly. After an earthquake, the sealant 20 of the buffer assembly 3 between the stone panels 7 on both sides of the expansion joint 25 and the sealant 20 of the buffer assembly 3 between the stone panels 7 at the corner on the other side away from the expansion joint 25 may separate from one side of the stone panel 7. These should be removed and resealed to ensure waterproofing. 2. During normal use without encountering natural disasters such as earthquakes, typhoons, or fires, a comprehensive inspection should be carried out every five years as required by regulations, and any damage should be repaired promptly.

[0043] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components, etc. The above description is merely illustrative of the structure of the present invention. All equivalent or simple variations made based on the structure, features, and principles described in this patent concept are included within the protection scope of this patent. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A seismic-resistant stone curtain wall expansion joint structure, comprising a curtain wall keel, stone panels, and seismic-resistant components; the curtain wall keel includes horizontal beams and vertical columns, which are fixed together; the seismic-resistant components include hangers, and the stone panels are fixed to the hangers; characterized in that: The seismic-resistant component also includes limiting angle bracket one, limiting angle bracket two, a seismic-resistant spring, and a buffer component; the crossbeam is provided with a sliding groove, which is set along the left and right sides, and the bolt group is slidably set in the sliding groove, and the bolt group connects the hanger to the crossbeam, so that the hanger is slidably set on the crossbeam; a steel ball is set between the hanger and the sliding groove; the hanger is provided with limiting angle bracket one on the left and right sides, and the limiting angle bracket one is fixed on the hanger, with the steel ball located between the limiting angle bracket one on both sides; limiting angle bracket two is provided on both sides of the sliding groove, and the limiting angle bracket two is fixed on the crossbeam; a seismic-resistant spring is provided on the side of the hanger near the expansion joint, which is set along the left and right sides, with one end of the seismic spring set on the hanger and the other end hung on the crossbeam; a buffer component is provided between the two stone panels on both sides of the expansion joint, and the buffer component includes an elastic rubber strip one, which is fixed on one side of the stone panel.

2. The earthquake-resistant stone curtain wall expansion joint structure according to claim 1, characterized in that: The limiting angle code 2 is provided with a buffer rubber strip on the side near the slide groove.

3. The earthquake-resistant stone curtain wall expansion joint structure according to claim 1, characterized in that: The hanger has bolt holes on the outer side near the crossbeam, and round-headed bolts are installed in the bolt holes with the holes facing upwards, and the round-headed bolts are in contact with the crossbeam.

4. The earthquake-resistant stone curtain wall expansion joint structure according to claim 1, characterized in that: A hook connector is fixed on the beam, and the other end of the anti-vibration spring is hung on the hook connector.

5. The earthquake-resistant stone curtain wall expansion joint structure according to claim 1, characterized in that: The elastic rubber strip is fixed to one side of the stone panel using a rubber strip fastener.

6. The earthquake-resistant stone curtain wall expansion joint structure according to claim 5, characterized in that: The adhesive strip fastener has a flange plate on one side, which is fixed to the back of the stone panel on one side. An elastic adhesive strip is embedded in the adhesive strip fastener. After a pin passes through the elastic adhesive strip and the adhesive strip fastener, it is inserted into the side of the stone panel to fix the elastic adhesive strip on the stone panel on that side.

7. The earthquake-resistant stone curtain wall expansion joint structure according to claim 5, characterized in that: The gap between the outer side of the elastic strip and the stone panel is sealed with sealant, and an elastic strip protrusion is provided on the outer side of the elastic strip.

8. The earthquake-resistant stone curtain wall expansion joint structure according to claim 5, characterized in that: The buffer assembly also includes an elastic rubber strip II, which is disposed at the inner corner of the two stone panels on both sides of the expansion joint.

9. The earthquake-resistant stone curtain wall expansion joint structure according to claim 1, characterized in that: Waterproof accordion panels are installed on the expansion joints.

10. A working method for the earthquake-resistant stone curtain wall expansion joint structure according to any one of claims 1-9, characterized in that: The process includes the following: When an earthquake occurs, three scenarios can occur on the left and right sides of the expansion joint: separation displacement, mutual displacement, and same-direction displacement. When separation displacement occurs, as the expansion joint widens, the main building structure and curtain wall joists, as a fixedly connected system, move together towards the side away from the expansion joint. The seismic-resistant components and stone panels, as another fixedly connected system, lag behind the main building structure and curtain wall joists due to their inherent inertia. This characteristic causes the seismic springs to compress. After a certain degree of compression, the seismic-resistant components and stone panels move along with the main building structure and curtain wall joists. Once the expansion joint widens to a certain extent, it begins to narrow, resulting in mutual displacement. After the displacement shrinks to a certain extent, the seismic springs return to their initial state. As the expansion joint shrinks further, the seismic springs become stretched, and when the expansion joint width is at its minimum, the seismic springs are stretched to their limit. When unidirectional displacement occurs, the main building structure and curtain wall keel assembly system on both sides of the expansion joint, as well as the seismic components and stone panel assembly system, all displace in the same direction. The seismic springs in the seismic components on one side are compressed, while the seismic springs in the seismic components on the other side are stretched. When the unidirectional displacement changes direction, the deformation states of the seismic springs on both sides are opposite. Throughout the earthquake, these types of displacement will continue as the earthquake continues until it ends.

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