Anti-seismic floor deformation joint device capable of being used for large-size deformation and working method of anti-seismic floor deformation joint device

Abstract

According to the anti-seismic floor deformation joint device capable of being used for large-size deformation and the working method of the anti-seismic floor deformation joint device, large-size anti-seismic deformation can be met, and the ratio of the expansion amount to the width of the deformation joint is increased; and meanwhile, the overall bearing capacity can be improved without increasing the thickness of the center plate, and local parts or overall parts can be flexibly replaced according to needs on the premise that a floor decoration layer is not damaged. The bases are fixedly arranged on structures on the two sides of the deformation joint. The cover plate assembly is slidably arranged on the base; the sliding rod is fixed to the bottom of the cover plate assembly and arranged in the width direction of the deformation joint. The lantern ring is slidably arranged on the sliding rod in a sleeving mode and can slide on the sliding rod in the width direction of the deformation joint. The upper end of the upper connecting rod is hinged to the lantern ring, and the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod. The rear anchor plates are fixed to structures on the two sides of the deformation joint. The sliding rail is fixed to the rear anchor plate and arranged in the length direction of the deformation joint. The sliding block is slidably arranged on the sliding rail.

Description

Technical Field

[0001] The invention relates to an anti-seismic floor deformation joint device which can be used for large-scale deformation and a working method thereof. Background Art

[0002] In the existing technology, the device for earthquake-resistant floor deformation joints is mainly composed of a frame, a base, a center plate, a connecting rod, a fastening bolt, an earthquake-resistant spring, a sliding ball, etc. Its structural characteristics are as follows: the base is installed and fixed on both sides of the floor deformation joint at a certain distance with expansion bolts, the frame falls on the inner side of the base, the center plate is placed on the floor deformation joint and is bolted to the frames on both sides to form a whole, the upper part of the center plate is a decorative layer covering the floor deformation joint, the lower part of the center plate is a fastening bolt and an earthquake-resistant spring connected to the connecting rod, sliding balls are set at both ends of the connecting rod, the sliding balls are installed in the slide grooves on both sides of the base, and the upper part of the intersection between the base and the frame is inlaid with an elastic strip; when an earthquake occurs, the center plate and the frame of the device are lifted along the inclined surface of the frame to withstand earthquake displacement, as shown in the Chinese patent application number 201920572643.1. However, the earthquake-resistant deformation joint device of this structure has the following shortcomings: The deformation range of the seismic expansion joint device described above, as well as the seismic expansion joint device used in the National Building Standard Design Atlas 14J936, "Expansion Joint Building Construction," is limited by the expansion and contraction achievable by the sliding ball of the connecting rod along the slide groove. This primarily addresses seismic deformation requirements for expansion joint widths of 500 mm or less. Seismic expansion joint devices capable of exceeding 500 mm are currently rare. Furthermore, according to the National Building Standard Design Atlas 14J936, "Expansion Joint Building Construction," the ratio of the actual expansion and contraction to the expansion joint width of this seismic expansion joint device is generally around 0.5, resulting in low deformation efficiency. Furthermore, when the expansion joint width is large, this seismic expansion joint device is limited by the combination of the base, center plate, and slide rod, as well as the spatial dimensions between them. Increasing the overall load-bearing capacity of the expansion joint device primarily relies on increasing the thickness of the center plate, which significantly increases the cost. Another shortcoming is that the connecting rod sliding balls connecting the center plate are installed in the sliding grooves on both sides of the base and cannot be removed separately after installation. This means that if this type of seismic expansion joint device is damaged by a large earthquake, it is necessary to pry open the floor decoration layer and replace it with a new device. The entire expansion joint device must be disassembled and replaced as a whole, which will inevitably cause damage to the floor decoration layer, thereby increasing the cost and causing problems such as coordination of the decoration layer due to the color difference between the old and new colors. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a seismic-resistant floor expansion joint device with a rational structural design that can be used for large-scale deformation and a working method thereof, which can meet the seismic deformation of large sizes with a width of more than 500 mm and can improve the ratio of expansion and contraction to expansion joint width, that is, the deformation efficiency; at the same time, it solves the problem of increasing the overall bearing capacity without increasing the thickness of the center plate and flexibly replacing local components or overall components as needed without damaging the floor decorative layer.

[0004] The technical solution adopted by the present invention to solve the above problems is: an earthquake-resistant floor deformation joint device that can be used for large-scale deformation, including a base, a cover assembly and an earthquake-resistant mechanism; the base is fixedly arranged on the structures on both sides of the deformation joint; the cover assembly is slidably arranged on the base and is located above the deformation joint; it is characterized in that: the earthquake-resistant mechanism includes a slide rod and an earthquake-resistant deformation assembly; the slide rod is fixed to the bottom of the cover assembly, and the slide rod is arranged along the width direction of the deformation joint; the earthquake-resistant deformation assembly includes a collar, an upper connecting rod, a lower connecting rod, an earthquake-resistant spring and a sliding mechanism, and the sliding mechanism includes a slider and slide rails; an anti-seismic mechanism includes a pair of anti-seismic deformation components, which are relatively arranged on both sides of the deformation joint; the collar is slidably mounted on the slide rod, and the collar can slide on the slide rod along the width direction of the deformation joint; the upper end of the upper connecting rod is hinged to the collar, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod, and the lower end of the lower connecting rod is hinged to the slider; the rear anchor plate is fixed to the structure on both sides of the deformation joint; the slide rail is fixed on the rear anchor plate, and the slide rail is arranged along the length direction of the deformation joint; the slider is slidably arranged on the slide rail, and the slider can slide on the slide rail along the length direction of the deformation joint.

[0005] The cover assembly described in the present invention includes a frame, a center plate and a steel ball; the frame is slidably arranged on the base; the center plate and the frame are fixedly connected to form a whole; a steel ball is slidably arranged between the center plate and the base, and the bottom of the steel ball contacts the base.

[0006] The base described in the present invention is fixed with an inclined protrusion at the outer end away from the deformation joint, and an extension is fixed at the end of the protrusion, and the extension is fixed on the structure on both sides of the deformation joint; the base is fixed with a limiting rib at the inner end close to the deformation joint, and a buffer rubber strip is fixed on the inner side of the limiting rib.

[0007] The center plate of the present invention is provided with a sliding groove, and the center plate is fixedly connected to the frame into a whole by a bolt group, and the bolt group is arranged in the sliding groove; a pair of steel balls are arranged at the lower part of the sliding groove, and the pair of steel balls are respectively located on both sides of the bolt group.

[0008] The lower portion of the center plate of the present invention is provided with reinforcing ribs.

[0009] The upper connecting rod of the present invention is provided with an upper connecting rod hook joint, the lower connecting rod is provided with a lower connecting rod hook joint, the upper end of the anti-seismic spring is connected to the upper connecting rod hook joint, and the lower end is connected to the lower connecting rod hook joint.

[0010] The sliding mechanism of the present invention further comprises a limiting angle bracket and a buffer rubber strip; the limiting angle bracket is tightly attached to both ends of the slide rail and fixed to the rear anchor plate, and a buffer rubber strip is pasted on the inner side of the limiting angle bracket.

[0011] The present invention provides a water stop below the anti-seismic mechanism, and the water stop is fixed on the structures on both sides of the deformation joint.

[0012] In the present invention, a plurality of anti-seismic mechanisms are arranged at a certain distance in the length direction according to the width of the deformation joint.

[0013] A method for operating a seismic-resistant floor expansion joint device capable of large-scale deformation is characterized by comprising the following steps: (1) When a strong earthquake occurs, as the deformation joint expands, the angle between the upper connecting rod and the lower connecting rod increases, the seismic spring is stretched and extended, and at the same time, the seismic deformation components on both sides of the deformation joint slide toward the ends of the sliding rod; when the earthquake force disappears and the structural positions on both sides of the deformation joint are restored, the seismic deformation components can be driven by the internal force of the seismic spring to restore the entire deformation joint device to its original position; (2) When a general earthquake occurs, as the deformation joint shrinks, the angle between the upper connecting rod and the lower connecting rod increases, the seismic spring is stretched and extended, and the seismic deformation components on both sides of the deformation joint slide toward the middle of the sliding rod respectively; accordingly, the cover plate component is lifted up by the seismic deformation component as the sliding rod is lifted up, and at this time the cover plate component is still within the range of the base; if the earthquake intensity continues to increase or a strong earthquake occurs, the seismic spring continues to be stretched and extended, and the seismic deformation components on both sides of the deformation joint continue to slide toward the middle of the sliding rod respectively, and accordingly, the cover plate component is lifted up by the seismic deformation component as the sliding rod is lifted up, and at this time the cover plate component may slide out of the range of the base; when the earthquake force disappears and the structural position on both sides of the deformation joint is restored, the seismic deformation component can restore the entire deformation joint device to its original position by the internal force of the seismic spring itself; (3) When uneven foundation settlement occurs, as the structure on the side with greater settlement sinks, the seismic deformation components on the side with greater settlement also sink significantly. At the same time, the base and frame on the side with greater settlement also sink significantly, and the center plate on the side with greater settlement also sinks significantly, and the center plate tilts toward the side with greater settlement. Since a certain height of deformation space is left between the base and the center plate, this deformation is not hindered. At the same time, even if settlement deformation occurs, at least one steel ball on either side of each set of seismic deformation components can roll normally, ensuring that they can function normally in the event of an earthquake after settlement deformation occurs.

[0014] Compared with the prior art, the present invention has the following advantages and effects: 1. Because the present invention differs from conventional methods by utilizing a seismic deformation assembly and sliding mechanism comprised of two connecting rods and a seismic spring, the entire expansion joint device exhibits enhanced deformation capabilities. This effectively meets the seismic deformation requirements of large-scale, seismic expansion joints with widths exceeding 500 mm, a requirement currently rarely met. Furthermore, the present invention is also applicable to expansion joints 500 mm wide or less. This technical solution significantly improves the ratio of actual expansion to expansion joint width. For example, for a 600 mm wide expansion joint, the actual expansion can reach 450, and the ratio can reach 0.75, resulting in high deformation efficiency.

[0015] 2. The two connecting rods of the present invention are connected by hinges so that they can rotate within a certain angle. The anti-seismic springs suspended on the two connecting rods expand and contract with deformation such as earthquakes. At the same time, the positions and angles of the two connecting rods change accordingly, thereby driving the cover plate assembly to move relative to the deformation joint. When the earthquake ends, the anti-seismic springs are automatically reset by their own internal force, and the entire deformation joint device is also reset accordingly.

[0016] 3. The sliding mechanism ensures that the connecting rod assembly can rotate and slide freely to meet the left and right expansion and contraction deformation of the expansion joint, and that the entire expansion joint device can undergo corresponding forward and backward displacement when an earthquake occurs, and return to its original position when the earthquake ends.

[0017] 4. The structure of the present invention can be provided with reinforcing ribs at the lower part of the center plate, thereby improving the overall structural strength and bearing capacity of the expansion joint device without increasing the thickness of the center plate, greatly enhancing the seismic performance of the expansion joint device, improving stability, and saving construction costs.

[0018] 5. The present invention is easy to install, and once it is damaged by a major earthquake and needs to be replaced, local components or the entire component can be flexibly replaced as needed without damaging the floor decoration layer, which solves the problem that the previous earthquake-resistant floor expansion joint device was inconvenient to replace after being damaged by a major earthquake, and has good durability and economy.

[0019] 6. In addition to meeting the front, back, left, and right displacements caused by earthquakes, the present invention can also meet the displacement changes caused by factors such as uneven foundation settlement and temperature changes. It has wide applicability and is easy to implement and promote.

[0020] 7. The present invention adds a pair of auxiliary sliding steel balls between the center plate and the two side frames, making the deformation more flexible. A limiting retaining edge and a buffer strip are added to the side of the base near the deformation joint, thereby increasing the safety of the deformation joint device during left and right expansion and contraction. This avoids the situation in currently commonly used earthquake-resistant deformation joint devices where, when the width of the building's deformation joint increases beyond a certain range due to an earthquake, the deformation joint device and the upper decorative layer fall as a whole due to the lack of an effective connection between the frame and the base, causing safety issues for people on the next floor. The set limiting angle code ensures that the entire deformation joint device remains within a safe range when displacing and deforming before and after an earthquake, providing good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front elevation structure of an embodiment of the present invention; Figure 2 Schematic diagram of the axonometric structure of an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 for Figure 2 Enlarged view of Part B; Figure 5 for Figure 2 The enlarged view of part B is the enlarged view after removing the anchor plate, expansion bolts and limit angle brackets; Figure 6 This is a schematic diagram of the front elevation structure of the embodiment of the present invention when the spacing between deformation joints is enlarged during a strong earthquake; Figure 7 This is a schematic diagram of the front elevation structure of the embodiment of the present invention when the spacing between deformation joints is reduced during a general earthquake; Figure 8 This is a schematic diagram of the front elevation structure of the embodiment of the present invention when the spacing between deformation joints is reduced during a strong earthquake; Figure 9 This is a schematic diagram of the front elevation structure of an embodiment of the present invention when uneven foundation settlement occurs. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0023] 1. The earthquake-resistant floor expansion joint device that can be used for large-scale deformation according to an embodiment of the present invention includes a base 1, a cover plate assembly and an earthquake-resistant mechanism.

[0024] The base 1 is fixedly mounted on the floor 13 on both sides of the deformation joint and is located above the deformation joint. The base 1 is fixed with an inclined protrusion 1-1 at the outer end away from the deformation joint, and an extension 1-2 is fixed at the end of the protrusion 1-1. The extension 1-2 is fixed to the floor 13 with an expansion bolt 9. The base 1 is fixed to the floor 13 with an expansion screw 11 on the side close to the deformation joint. The tail of the expansion screw 11 is flush with the surface of the base 1 to ensure that the frame 2 and the center plate 3 are not obstructed during the process of expansion and contraction along the deformation joint. The base 1 is fixed with a limit rib 1-3 at the inner end close to the deformation joint. A buffer rubber strip 26 is fixed on the inner side of the limit rib 1-3 to prevent the limit rib 1-3 from being damaged by severe collision in the event of a strong earthquake.

[0025] The cover assembly is slidably disposed on the base 1 and is located above the deformation joint. The cover assembly includes a frame 2, a center plate 3 and steel balls 5.

[0026] The frame 2 is slidably arranged on the base 1 , and an elastic rubber strip 10 is embedded in the upper portion of the joint between the frame 2 and the base 1 .

[0027] The center plate 3 has oblong sliding grooves 3-1 on both sides. The center plate 3 is fixedly connected to the frame 2 on both sides by a bolt group 6, and the bolt group 6 is set in the sliding groove 3-1. A pair of steel balls 5 are slidingly arranged between the center plate 3 and the base 1 to assist sliding. The steel balls 5 are set in the lower part of the sliding groove 3-1, and the pair of steel balls 5 are respectively located on both sides of the bolt group 6. The bottom of the steel balls 5 contacts the base 1. During deformation such as earthquakes, the steel balls 5 can flexibly roll relative to the base 1, allowing the cover plate assembly to slide. A sliding groove cover plate 3-2 is installed above the sliding groove 3-1 to prevent the upper bonding mortar from entering the sliding groove 3-1, which would prevent the steel balls 5 from flexibly rolling under the sliding groove 3-1. The upper portion of the center slab 3 is covered with bonding mortar and a finishing layer 12, which cover the floor expansion joints. The upper surface of the center slab 3 is provided with elongated protrusions, which enable the upper bonding mortar to better bond with the center slab 3. The protrusions can be shaped in a variety of ways and their primary function is to strengthen the bond between the center slab 3 and the upper bonding mortar. Reinforcing ribs 4 are provided on the lower portion of the center slab 3 to enhance the overall structural strength and bearing capacity of the expansion joint assembly, thereby enhancing its seismic performance.

[0028] The anti-seismic mechanism includes a slide bar 7 and an anti-seismic deformation assembly. Several anti-seismic mechanisms are arranged at a certain distance in the longitudinal direction according to the width of the deformation joint, ensuring that the entire set of anti-seismic floor deformation joint devices that can be used for large-scale deformation have sufficient strength and flexible deformation capabilities.

[0029] The slide bar 7 is fixed to the bottom of the center plate 3 by screws 8, and the slide bar 7 is arranged along the width direction of the deformation joint.

[0030] The anti-seismic deformation assembly includes a collar 15, an upper connecting rod 16, a lower connecting rod 17, an anti-seismic spring 18, and a sliding mechanism. The sliding mechanism includes a slider 20, a slide rail 21, a limit angle bracket 22, and a buffer strip 26. An anti-seismic mechanism includes a pair of anti-seismic deformation assemblies, which are arranged on opposite sides of the deformation joint.

[0031] The collar 15 is slidably mounted on the slide bar 7 and can slide along the width of the expansion joint on the slide bar 7. The upper end of the upper connecting rod 16 is hinged to the collar 15 via a hinge 27. The lower end of the upper connecting rod 16 is hinged to the upper end of the lower connecting rod 17 via a hinge 27. The lower end of the lower connecting rod 17 is hinged to the slider 20 via a hinge 27, allowing the two connecting rods to rotate within a certain angle. An upper connecting rod hook joint 16-1 is provided on the upper connecting rod 16, and a lower connecting rod hook joint 17-1 is provided on the lower connecting rod 17. The upper end of the anti-seismic spring 18 is connected to the upper connecting rod hook joint 16-1, and the lower end is connected to the lower connecting rod hook joint 17-1. When the positions and angles of the two connecting rods change with deformation such as earthquakes, the anti-seismic spring 18 will expand and contract accordingly, thereby driving the frame 2 and the center plate 3 to move relative to the deformation joint. When the earthquake ends, the anti-seismic spring 18 is automatically reset by the internal force, and the entire deformation joint device is also reset accordingly.

[0032] The rear anchor plate 19 is provided with an oblong hole, and the position of the rear anchor plate 19 can be adjusted up and down. After the seismic deformation assembly is accurately adjusted to the optimal position and the position of the rear anchor plate 19 is fine-tuned accordingly, the expansion bolt 9 is passed through the oblong hole and accurately fixed and tightened on the beams 14 on both sides of the deformation joint. In this way, the rear anchor plate 19 is fixed on the beams 14 on both sides of the deformation joint.

[0033] The slide rail 21 is fixed on the rear anchor plate 19. The slide rail 21 can be integrally formed with the rear anchor plate 19 or can be welded to the rear anchor plate 19. The slide rail 21 is arranged along the length direction of the expansion joint.

[0034] The slider 20 is slidably mounted on the slide rail 21 and can slide along the length of the expansion joint on the slide rail 21. The limiting angle brackets 22 are tightly attached to both ends of the slide rail 21 and fixed to the rear anchor plate 19 with self-tapping screws 23. A buffer rubber strip 26 is affixed to the inner side of the limiting angle brackets 22. Since the slide rail 21 uses limiting angle brackets 22 and buffer rubber strips 26 at both ends, the entire expansion joint device can not only move forward and backward with an earthquake but also effectively constrain the displacement, thus providing good safety. This sliding mechanism enables the entire earthquake-resistant expansion joint device to undergo corresponding forward and backward displacement when an earthquake occurs, and to return to its original position when the earthquake ends.

[0035] Taking into account the possibility of occasional water leakage on the ground, a waterstop 24 is also provided below the anti-seismic mechanism. The waterstop 24 is fixed to the beam 14 with a conventional pressure strip 25 and expansion screws 11. The upper portion of the pressure strip 25 is usually embedded with waterproof sealant. Depending on the location of the anti-seismic floor deformation joint device that can be used for large-scale deformation, a fire barrier can be provided below the waterstop if necessary. The base 1 is provided with notches at certain intervals near the limiting retaining edges 1-3 to ensure that occasional water leakage can flow smoothly to the waterstop 24 and finally be connected to the drainage system using a drainage device.

[0036] The installation process of the embodiment of the present invention is as follows: The present invention needs to be installed first by pressing the base 1 with expansion bolts 9 and expansion screws 11. Figure 1 Secure it to the floor slab 13, then adhere an elastic strip 26 to the inside of the retaining edge 1-3. Then, insert the steel ball 5 into the lower portion of the sliding groove 3-1 and secure the center plate 3 and frame 2 with the bolt assembly 6. Note that during installation, first insert the bolt portion of the bolt assembly 6 upward through the frame 2 and center plate 3. Then, insert the sliding groove cover 3-2 into the bolt portion of the bolt assembly 6. Finally, tighten the nut portion of the bolt assembly 6. The lower portion of the bolt assembly 6 should be flush with the lower surface of the frame 2. The tightness of the bolt assembly 6 should ensure that the steel ball 5 can roll flexibly under the sliding groove 3-1. Next, insert the collar 15 onto the slide rod 7, and then secure the slide rod 7 to the bottom of the center plate 3 with screws 8. Then, connect the upper and lower connecting rods 16 and 17 with hinges 27. Finally, suspend the anti-seismic spring 18 from the upper and lower connecting rod hook joints 16-1 and 17-1, thus forming the anti-seismic deformation assembly. Then, based on the position of the anti-seismic deformation assembly when it is not subject to external forces, the rear anchor plate 19 and the slide rail 21 are preliminarily fixed to the beam 14 on both sides of the deformation joint with the expansion bolts 9. Then, the slider 20 is inserted into the slide rail 21, the front and rear positions are adjusted, and the lower connecting rod 17 is connected with the hinge 27. The rear anchor plate 19 has an oblong hole, and the position of the rear anchor plate 19 can be adjusted up and down. After the anti-seismic deformation assembly is accurately adjusted to the optimal position and the position of the rear anchor plate 19 is fine-tuned accordingly, the expansion bolts 9 are accurately fixed and tightened to the beam 14. Then, the limiting angle code 22 is attached to both ends of the slide rail 21 and fixed to the rear anchor plate 19 with self-tapping screws 23. The buffer rubber strip 26 is pasted on the inside of the limiting angle code 22. Then, the water stop 24 is fixed to the beam 14 with the usual pressure strip 25 and the expansion screw 11, and the waterproof sealant is embedded in the upper part of the usual pressure strip 25. Finally, bonding mortar and a decorative layer 12 are applied to the base 1, the frame 2, and the center plate 3, and an elastic adhesive strip 10 is embedded in the upper portion of the joint between the base 1 and the frame 2. Thus, the device of the present invention is installed.

[0037] 2. The working method of the earthquake-resistant floor expansion joint device of the embodiment of the present invention can be used for large-scale deformation. The working principle when encountering deformation such as earthquake is shown in FIG. Figure 6-Figure 9 , including the following process: (1) See Figure 6 When a strong earthquake occurs, as the deformation joint widens, the angle between the upper connecting rod 16 and the lower connecting rod 17 in the earthquake-resistant deformation assembly increases, the earthquake-resistant spring 18 is stretched and extended, and at the same time, the earthquake-resistant deformation assemblies on both sides of the deformation joint slide toward the two ends of the slide bar 7; when the earthquake force disappears and the structural positions on both sides of the deformation joint are restored, the earthquake-resistant deformation assembly can be driven by the internal force of the earthquake-resistant spring 18 to restore the entire deformation joint device to its original position. The deformation and recovery of the present invention when the spacing between the deformation joints is widened during a general earthquake are similar to the above description, except that the degree of deformation is lighter, which will not be repeated here.

[0038] (2) See Figure 7 When a general earthquake occurs, as the deformation joint shrinks, the angle between the upper connecting rod 16 and the lower connecting rod 17 in the earthquake-resistant deformation assembly increases, the earthquake-resistant spring 18 is stretched and extended, and at the same time, the earthquake-resistant deformation assemblies on both sides of the deformation joint slide toward the middle of the slide bar; accordingly, the cover assembly is lifted upward as the slide bar 7 is lifted by the earthquake-resistant deformation assembly, and at this time the cover assembly is still within the range of the base 1. If the earthquake intensity continues to increase or a strong earthquake occurs, it will be deformed into Figure 8 In this state, the anti-seismic spring 18 continues to be stretched and extended, and the anti-seismic deformation components on both sides of the expansion joint continue to slide toward the center of the slide rod 7. Accordingly, the cover plate assembly continues to rise upward as the slide rod 7 is further lifted by the anti-seismic deformation components. At this time, the cover plate assembly may slide out of the range of the base 1. When the seismic force disappears and the structural positions on both sides of the expansion joint are restored, the anti-seismic deformation components, driven by the internal force of the anti-seismic spring 18, can restore the entire expansion joint assembly to its original position.

[0039] (3) See Figure 9 When uneven foundation settlement occurs, as the structure on the side with the larger settlement sinks, the seismic deformation components on the side with the larger settlement also sink significantly. At the same time, the base 1 and frame 2 on the side with the larger settlement also sink significantly, and the center plate 3 on the side with the larger settlement also sinks significantly, and the center plate 3 becomes inclined toward the side with the larger settlement. Because a certain height of deformation space is left between the base 1 and the center plate 3, this deformation is not hindered; at the same time, even if settlement deformation occurs, at least one steel ball 5 on either side of each group of seismic deformation components can roll normally, ensuring that the present invention can function normally in the event of an earthquake after settlement deformation occurs.

[0040] 3. The following briefly describes the disassembly and replacement method of the device of the present invention after it is damaged by a large earthquake. According to the basic principle of my country's structural seismic design that "small earthquakes will not damage it, medium earthquakes can be repaired, and large earthquakes will not collapse", the width of the expansion joint is also matched with this basic principle, which means that when encountering medium earthquakes and above, the expansion joint device is allowed to be damaged. However, the existing seismic-resistant floor expansion joint device has a connecting rod sliding ball connected to the center plate installed in the sliding groove on both sides of the base, and it cannot be disassembled separately after installation. This means that if this type of seismic-resistant expansion joint device is damaged by a large earthquake, it is necessary to pry open the floor decoration layer and disassemble the entire expansion joint device for replacement when replacing it with a new device, which will inevitably cause damage to the floor decoration layer. The use of the present invention can completely solve the problem that the previous seismic-resistant floor expansion joint device was inconvenient to replace after being damaged by a large earthquake. The specific disassembly and replacement methods are as follows: If a general earthquake occurs and the upper connecting rod 16, the lower connecting rod 17 and the anti-seismic spring 18 in the lower anti-seismic deformation assembly are partially or completely damaged, the maintenance personnel can unscrew the bolts and nuts at the hinges on both sides of the damaged components at the lower position of the present invention, remove the bolts, and replace the damaged components with new components. If a strong earthquake occurs and the lower anti-seismic deformation assembly and the upper frame 2 and the center plate 3 and other components are damaged, the maintenance personnel can first remove the lower anti-seismic deformation assembly according to the above steps, and then lift the upper frame 2 and the center plate 3 and other components to a certain height and move them horizontally to one side of the deformation joint, check the specific damaged components and replace the corresponding components, and the undamaged components can continue to be used. After replacing the damaged components, reinstall the device according to the above installation steps. The device composed of new and old components still has the same anti-seismic deformation performance as a new device.

[0041] The key points of the present invention are as follows: First, the length of the anti-seismic spring 18 should be able to keep the upper connecting rod 16 and the lower connecting rod 17 at an angle of 120°-130° when it is in its natural state, and the working stroke of the anti-seismic spring 18 under the extreme load should meet the requirement of the upper connecting rod 16 and the lower connecting rod 17 being at an angle of 180°, thereby ensuring the highest deformation efficiency. Second, the stiffness and damping characteristics of the anti-seismic spring 18 should be controlled within a reasonable range, so that the tightness of the anti-seismic spring matches the speed of earthquake deformation. A further technical solution is to match different anti-seismic setting intensity with anti-seismic springs of different stiffness and damping characteristics, so that the anti-seismic spring can perform at its best in each anti-seismic deformation joint device. Third, the safety factor of the anti-seismic spring 18 should ensure that the maximum working load (i.e., the load borne by the anti-seismic spring 18 when the upper and lower connecting rods 16 and 17 are at a 180° angle) is less than 80% of the ultimate load. Its corrosion resistance and applicable ambient temperature range should meet the project's design service life, ensuring that the anti-seismic spring 18 maintains satisfactory performance throughout its design life. Fourth, anti-seismic spring 18 features anti-slip split hooks at both ends, ensuring quick installation and removal while maintaining a secure, long-lasting connection to the hook joints during operation. Furthermore, the dimensions of the upper and lower connecting rod hook joints 16-1 and 17-1 should ensure a clearance of at least 3mm between the anti-seismic spring 18 and the upper and lower connecting rods 16 and 17 when the upper and lower connecting rods 16 and 17 are at a 180° angle, ensuring safety and stability during operation. Fifth, the ratio of the length of the sliding rod 7 to the deformation gap width should be maintained at approximately 2:3, allowing for smooth movement of the anti-seismic deformation assembly and maximizing deformation efficiency. 6. The length ratio of the upper connecting rod 16 to the lower connecting rod 17 is maintained at about 2:3, so as to reduce the occupation of the lower space under the premise of ensuring high deformation efficiency, and the reserved space can be used for the installation of the lower water stop 24. 7. The diameter of the pin shaft of the hinge 27 used in various places is slightly smaller than the hole diameter, and it should be able to ensure that the connecting parts can rotate flexibly without being loose, so that the entire seismic deformation joint device has good coordination during operation and can perform at its best. 8. The length of the rear anchor plate 19 and the sliding mechanism is matched with the appropriate length according to the seismic setting intensity of the building, so that the front and rear sliding deformation of the entire seismic deformation joint device is more in line with the actual situation of the project. 9. The raised height of the upper surface of the center plate 3 is controlled to be above 2mm, so that the upper bonding mortar can better combine with the center plate 3. 10. The size of the steel ball 5 below the sliding groove 3-1 should be able to ensure that the bottom of the steel ball 5 is in contact with the base 1, and can roll flexibly relative to the base 1 during deformation such as earthquakes.

[0042] The technical requirements for the long-term reliability of the present invention are as follows: First, after a major earthquake, in order to ensure that the present invention can be used normally when an earthquake occurs again, the normal pressure strip 25 and the expansion screw 11 on one side of the water stop 24 should be removed from the bottom of the beam, and each component of each set of earthquake-resistant deformation joint devices should be checked, especially the earthquake-resistant spring 18 and the bolt groups 6, limit retaining edges 1-3 and limit angle codes 22 at various locations. If there is damage or obvious deformation and rust, it should be replaced with a new component. After the replacement is completed, the water stop 24 and other components can be reinstalled in place. Second, after the inspection, regardless of whether the components need to be replaced, lubricating oil should be applied to the slide bar 7 and each bolt group 6 in the lower earthquake-resistant deformation group, and the nut of each bolt group 6 should be adjusted to a moderate tightness to ensure that the present invention can be used efficiently when an earthquake occurs again.

[0043] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. Any equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Those skilled in the art of the technology to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A seismic-resistant floor expansion joint device that can be used for large-scale deformations, comprising a base, a cover assembly, and a seismic-resistant mechanism; the base is fixedly mounted on the structure on both sides of the expansion joint; the cover assembly is slidably mounted on the base and is located above the expansion joint; the device is characterized by: The anti-seismic mechanism includes a sliding rod and an anti-seismic deformation component; the sliding rod is fixed to the bottom of the cover plate component, and the sliding rod is arranged along the width direction of the deformation joint; the anti-seismic deformation component includes a collar, an upper connecting rod, a lower connecting rod, an anti-seismic spring and a sliding mechanism, and the sliding mechanism includes a slider and a slide rail; an anti-seismic mechanism includes a pair of anti-seismic deformation components, which are relatively arranged on both sides of the deformation joint; the collar is slidably mounted on the sliding rod, and the collar can slide on the sliding rod along the width direction of the deformation joint; the upper end of the upper connecting rod is hinged to the collar, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod, and the lower end of the lower connecting rod is hinged to the slider; the rear anchor plate is fixed to the structure on both sides of the deformation joint; the slide rail is fixed to the rear anchor plate, and the slide rail is arranged along the length direction of the deformation joint; the slider is slidably set on the slide rail, and the slider can slide on the slide rail along the length direction of the deformation joint.

2. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 1 is characterized in that: The cover assembly includes a frame, a center plate and steel balls; the frame is slidably arranged on the base; the center plate and the frame are fixedly connected to form a whole; a steel ball is slidably arranged between the center plate and the base, and the bottom of the steel ball contacts the base.

3. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 2 is characterized in that: The base is fixed with an inclined protrusion at the outer end away from the deformation joint, and an extension is fixed at the end of the protrusion, and the extension is fixed on the structure on both sides of the deformation joint; the base is fixed with a limit rib at the inner end close to the deformation joint, and a buffer rubber strip is fixed on the inner side of the limit rib.

4. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 2 is characterized in that: The center plate is provided with a sliding groove, and the center plate is fixedly connected to the frame into a whole by a bolt group, and the bolt group is arranged in the sliding groove; a pair of steel balls are arranged at the lower part of the sliding groove, and the pair of steel balls are respectively located on both sides of the bolt group.

5. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 2 is characterized in that: The lower part of the center plate is provided with reinforcing ribs.

6. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 1 is characterized in that: The upper connecting rod is provided with an upper connecting rod hook joint, the lower connecting rod is provided with a lower connecting rod hook joint, the upper end of the anti-seismic spring is connected to the upper connecting rod hook joint, and the lower end is connected to the lower connecting rod hook joint.

7. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 1 is characterized in that: The sliding mechanism also includes a limiting angle code and a buffer rubber strip; the limiting angle code is tightly attached to both ends of the slide rail and fixed to the rear anchor plate, and a buffer rubber strip is pasted on the inner side of the limiting angle code.

8. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 1 is characterized in that: A waterstop is provided below the anti-seismic mechanism and is fixed to the structure on both sides of the deformation joint.

9. The earthquake-resistant floor expansion joint device applicable to large-scale deformation according to claim 1 is characterized in that: Several anti-seismic mechanisms are arranged at a certain distance in the length direction according to the width of the deformation joint.

10. The operating method of the earthquake-resistant floor expansion joint device applicable to large-scale deformation according to any one of claims 1 to 9, characterized in that: The process includes the following: (1) When a strong earthquake occurs, as the deformation joint expands, the angle between the upper connecting rod and the lower connecting rod increases, the seismic spring is stretched and extended, and at the same time, the seismic deformation components on both sides of the deformation joint slide toward the ends of the sliding rod; when the earthquake force disappears and the structural positions on both sides of the deformation joint are restored, the seismic deformation components can be driven by the internal force of the seismic spring to restore the entire deformation joint device to its original position; (2) When a general earthquake occurs, as the deformation joint shrinks, the angle between the upper connecting rod and the lower connecting rod increases, the seismic spring is stretched and extended, and the seismic deformation components on both sides of the deformation joint slide toward the middle of the sliding rod respectively; accordingly, the cover plate component is lifted up by the seismic deformation component as the sliding rod is lifted up, and at this time the cover plate component is still within the range of the base; if the earthquake intensity continues to increase or a strong earthquake occurs, the seismic spring continues to be stretched and extended, and the seismic deformation components on both sides of the deformation joint continue to slide toward the middle of the sliding rod respectively, and accordingly, the cover plate component is lifted up by the seismic deformation component as the sliding rod is lifted up, and at this time the cover plate component may slide out of the range of the base; when the earthquake force disappears and the structural position on both sides of the deformation joint is restored, the seismic deformation component can restore the entire deformation joint device to its original position by the internal force of the seismic spring itself; (3) When uneven foundation settlement occurs, as the structure on the side with greater settlement sinks, the seismic deformation components on the side with greater settlement also sink significantly. At the same time, the base and frame on the side with greater settlement also sink significantly, and the center plate on the side with greater settlement also sinks significantly, and the center plate tilts toward the side with greater settlement. Since a certain height of deformation space is left between the base and the center plate, this deformation is not hindered. At the same time, even if settlement deformation occurs, at least one steel ball on either side of each set of seismic deformation components can roll normally, ensuring that they can function normally in the event of an earthquake after settlement deformation occurs.

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