High ductility mortar damper with sheared parallel circular hole soft steel plate
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING UNIV OF SCI & TECH
- Filing Date
- 2024-12-30
- Publication Date
- 2026-06-02
Smart Images
Figure CN224314397U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a high-ductility mortar energy dissipation and vibration reduction device for shear-supported parallel circular hole soft steel plates, belonging to the field of building vibration reduction technology. Background Technology
[0002] Improving the seismic performance of buildings is key to solving the problem of building damage and collapse under strong earthquakes. Three technologies are typically used to economically, efficiently, and rationally enhance a building's resistance to earthquake damage and collapse: first, seismic design technology, which employs efficient seismic-resistant structural systems and high-performance seismic-resistant components to improve the structure's seismic resistance; second, seismic isolation design technology, which uses base isolation devices to reduce the impact of earthquakes on the superstructure; and third, energy dissipation and damping technology, which uses energy dissipation and damping devices to absorb the energy input into the structure during earthquakes, reducing structural damage. Weak energy dissipation and damping devices can be replaced if damaged during strong earthquakes. Seismic isolation and damping technologies can be applied in combination.
[0003] The engineering community both domestically and internationally has always attached great importance to the research and development of new energy dissipation and vibration reduction devices. Currently, energy dissipation and vibration reduction devices mainly include viscous dampers, metal dampers, and friction dampers. However, there is a significant lack of functionally recoverable energy dissipation and vibration reduction devices and manufacturing technologies suitable for performance-based design and possessing multiple seismic defense lines.
[0004] This utility model proposes a shear-parallel circular hole soft steel plate laminated rubber energy dissipation and vibration reduction device and method for use in steel frame-bracing structures, belonging to the field of building vibration reduction technology. The device consists of an upper connecting steel plate with circular holes connected to the lower flange of an H-shaped steel frame beam; a lower connecting steel plate connected to the welded connection end steel plate at the intersection area of the H-shaped steel herringbone support; a shear-parallel circular hole soft steel plate welded between the upper and lower connecting steel plates; soft steel plates with sealing dog-bone holes on the left and right sides welded between the upper and lower connecting steel plates; front and rear sealing soft steel plates welded between the upper and lower connecting steel plates; vulcanized rubber injected through the circular holes in the cavity between the shear-parallel circular hole soft steel plates between the upper connecting steel plates; and a high-strength bolt system connecting the upper and lower connecting steel plates to the steel frame-bracing structure. Under minor or moderate earthquakes, the front and rear sealing soft steel plates and the shear-loaded parallel circular hole soft steel plates of this energy dissipation and damping device can fully utilize their high shear stiffness to effectively control the inter-story drift angle. Under major earthquakes, the front and rear sealing soft steel plates and the middle shear-loaded parallel circular hole soft steel plate of this energy dissipation and damping device dissipate seismic energy through shear plastic deformation. The rubber and soft steel plates that connect the middle shear-loaded parallel circular hole soft steel plates undergo synergistic shear deformation and provide restoring force, which can effectively improve the energy dissipation and damping effect of the energy dissipation and damping device and its ease of repair after major earthquakes.
[0005] Technical bottlenecks: 1. Viscous dampers are significantly affected by temperature, failing to achieve their full damping capacity at high or low temperatures. Aging of the internal medium leads to unstable damping force. Due to the high pressure and high speed of the medium within the damper, seals are prone to damage and leakage over long-term operation, resulting in high maintenance costs. 2. Viscoelastic and lead viscoelastic dampers also suffer from environmental temperature sensitivity and damping parameters significantly affected by the environment. 3. Metal dampers utilize the elastoplastic hysteretic deformation of metal components made of low-yield-point steel and other materials to dissipate energy upon yielding. They are less affected by external environmental and temperature changes, but suffer from low initial stiffness and large yield displacement. This means they cannot provide sufficient stiffness under small earthquakes, and while they begin to dissipate energy under large earthquakes, their recoverability is poor, making performance-based design difficult to meet structural seismic requirements. Technical bottleneck: An energy dissipation and damping device and its manufacturing method that combines the synergistic shear deformation energy dissipation and damping of round-hole soft steel plates and high-ductility mortar, assembled between a steel frame and a herringbone steel support. Utility Model Content
[0006] To address the aforementioned problems, this utility model proposes a high-ductility mortar energy dissipation and vibration reduction device for shear-loaded parallel circular hole soft steel plates in steel frame-braced structures:
[0007] The aforementioned shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device consists of an upper connecting steel plate with circular holes connected to the lower flange of the H-shaped steel frame beam, a lower connecting steel plate connected to the welded connection end steel plate at the intersection area of the H-shaped steel herringbone support, soft steel plates with sealing dog bone holes on the left and right sides welded between the upper and lower connecting steel plates, shear-loaded parallel circular hole soft steel plates welded between the upper and lower connecting steel plates, front and rear sealing soft steel plates welded between the upper and lower connecting steel plates, high-ductility mortar injected into the cavity between the soft steel plates through the circular holes of the upper connecting steel plate, and a high-strength bolt system connecting the upper and lower connecting steel plates to the steel frame-support structure.
[0008] The aforementioned perforated mild steel plate is a rectangular mild steel plate with distributed perforated holes punched out.
[0009] The aforementioned parallel circular hole mild steel plate is a set of parallel circular hole mild steel plates that are mainly subjected to shear deformation, welded between the upper and lower connecting steel plates of the energy dissipation and vibration reduction device.
[0010] The left and right side sealing skin dog bone hole soft steel plate is a rectangular soft thin steel plate with the same perimeter size as the dog bone hole soft steel plate. It is welded from the outside to the dog bone hole soft steel plate and then welded to the soft steel plates at the left and right ends of the upper and lower connecting steel plates of the energy dissipation and vibration reduction device.
[0011] The aforementioned front and rear sealing soft steel plates are rectangular soft steel plates, welded to the front and rear sides between the upper and lower connecting steel plates of the energy dissipation and vibration reduction device, and welded to the left and right sealing skin dog bone hole soft steel plates. It forms a multi-cavity structure with the shear parallel round hole soft steel plates and the left and right sealing skin dog bone hole soft steel plates.
[0012] The high-ductility mortar is poured into the cavity between the parallel circular hole soft steel plate under shear, the soft steel plates with sealing dog bone holes on the left and right sides, and the soft steel plates with sealing front and rear, and flows through the circular holes on the circular hole soft steel plate. The soft steel-high-ductility mortar composite structure is formed after curing with the high-ductility mortar.
[0013] The energy dissipation and vibration reduction device assembly connection structure refers to the upper connecting steel plate with round holes being connected to the lower flange of the steel frame H-beam by high-strength bolts, and the lower connecting steel plate being connected to the steel plate at the intersection area of the H-beam herringbone support by welding. The connection adopts a high-strength bolt assembly connection structure.
[0014] To achieve the above objectives, the present invention adopts the following technical solution:
[0015] A shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device, which is connected and assembled with a steel frame-support structure using high-strength bolts, includes a steel frame-support structure 1 and a shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 disposed within the steel frame-support structure 1; the shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 is arranged sequentially along the middle of the steel frame-support structure 1; the shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 includes a multi-cavity steel component formed by welding an upper connecting steel plate with circular holes 7, a lower connecting steel plate 8, a soft steel plate with sealed skin dog bone holes 9, a shear-loaded parallel circular hole soft steel plate 10, and a sealed soft steel plate 11, and high-ductility mortar 12 poured into the cavity of the multi-cavity steel component.
[0016] Furthermore, the steel frame-support structure 1, the steel frame H-shaped steel columns 2, and the upper and lower steel frame H-shaped steel beams 3 are connected by high-strength bolts 13 to form a steel frame. The upper part of the H-shaped steel herringbone support 4 is welded to the upper flange of the lower steel frame H-shaped steel beam 3 using high-strength bolts 13. The steel frame H-shaped steel columns 2 and steel frame H-shaped steel beams 3 are made of welded or rolled H-shaped steel. The bottom of the steel frame H-shaped steel column 2 is welded to a base plate and stiffening ribs, and the base plate is connected to the pre-embedded bolts in the foundation to form the steel frame column base. The ends of the steel frame H-shaped steel beams 3 are welded with rectangular end plates, which have bolt holes. The bolt holes on the rectangular end plates correspond to the bolt holes on the steel frame H-shaped steel columns 2 and are connected by high-strength bolts. The thickness of the rectangular end plates welded to the ends of the steel frame H-shaped steel beams 3 is not less than that of the steel frame. The flange thickness of H-beam column 2; stiffening ribs are welded to both sides of the web of H-beam column 2 in the steel frame beam-column joint area, and the welding position of the stiffening ribs is consistent with the elevation of the upper and lower flanges of H-beam 3; stiffening ribs are welded to both sides of the web of H-beam at both ends of the connection area between the upper connecting steel plate 7 with the lower flange of H-beam 3, and the thickness of the stiffening ribs is not less than the thickness of the web of the beam; H-beam herringbone support 4 is a symmetrically arranged diagonal H-beam, and the connecting end steel plate 5 is welded to the upper intersection area of H-beam herringbone support 4; the connecting end steel plate 5 welded to the upper intersection area of H-beam herringbone support 4 and the lower connecting steel plate 8 are connected by high-strength bolts 13; the horizontal angle between H-beam herringbone support 4 and H-beam 3 is 45°~60°.
[0017] Furthermore, in the shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6, multiple shear-parallel circular hole soft steel plates 10 are arranged vertically side by side, with their upper and lower ends welded to the upper connecting steel plate 7 with circular holes and the lower connecting steel plate 8, respectively. Soft steel plates 11 are welded to the left and right sides to form a multi-cavity steel component. The outer side of the multi-cavity steel component is a soft steel plate 9 with a sealed skin dog bone hole. The upper connecting steel plate 7 with circular holes has a reserved circular hole. High-ductility mortar 12 is poured into the cavity of the multi-cavity steel component between the welded shear-parallel circular hole soft steel plates 10. After curing with the high-ductility mortar, a soft steel plate-high-ductility mortar composite structure is formed.
[0018] Furthermore, the upper connecting steel plate 7 with round holes is a rectangular steel plate with holes for injecting high-ductility mortar and bolt holes. Its thickness is not less than the thickness of the flange of the steel frame H-beam 3. The bolt holes on it correspond to the bolt holes on the lower flange of the steel frame H-beam 3. The upper connecting steel plate 7 with round holes has a high-ductility mortar injection hole on the upper part of each cavity formed by the shear parallel round hole soft steel plate 10. The diameter of the high-ductility mortar injection hole is not less than 20mm. The width of the upper connecting steel plate 7 with round holes is not greater than the flange width of the steel frame H-beam 3.
[0019] Furthermore, the lower connecting steel plate 8 is a rectangular steel plate with connecting bolt holes at the bottom of the shear-loaded parallel circular hole soft steel plate high ductility mortar energy dissipation and vibration reduction structure 6, and its size is the same as that of the upper connecting steel plate with circular holes 7.
[0020] Furthermore, the soft steel plate 9 for sealing the dog bone hole of the skin is a rectangular soft thin steel plate with the same perimeter size as the soft steel plate for the dog bone hole. After the skin is attached to the outside of the rectangular soft thin steel plate, it is welded to the left and right ends of the upper connecting steel plate with round hole 7 and the lower connecting steel plate 8.
[0021] Furthermore, the shear-resisting parallel circular hole soft steel plate 10 is a set of parallel shear-yielding soft steel plates, formed by punching out a series of circles from rectangular soft steel plates; the thickness of the circular hole soft steel plate is determined according to the stress and energy dissipation requirements. Under a major earthquake, the shear-resisting parallel circular hole soft steel plate 10 welded between the upper and lower connecting steel plates dissipates seismic energy through shear yielding deformation.
[0022] Furthermore, the front and rear sealing soft steel plates 11 are rectangular soft steel plates, forming several cavities with the left and right side sealing skin dog bone hole soft steel plates 9 and the shear-loaded parallel circular hole soft steel plates 10. The front and rear sealing soft steel plates 11 are mainly subjected to shear deformation. Under minor or moderate earthquakes, they can play a role in controlling inter-story displacement by exerting high shear stiffness. Under major earthquakes, they consume seismic energy through buckling deformation.
[0023] Furthermore, the high-ductility mortar 12 is injected into the cavity between the shear-receiving parallel circular hole soft steel plate, the soft steel plates with sealing dog bone holes on the left and right sides, and the soft steel plates with sealing front and rear, and flows through the circular holes on the circular hole soft steel plate, forming a soft steel-high-ductility mortar composite structure after curing with the high-ductility mortar.
[0024] Furthermore, high-strength bolts 13 are used for the following connections: forming connection of steel frame-support structure 1, where the end of steel frame H-beam 3 is provided with a connecting end plate and is assembled and connected to steel frame H-beam column 2 with bolt holes using high-strength bolts 13 to form a steel frame; the component formed by welding the connecting end steel plate 5 of H-beam herringbone support 4 to the upper end intersection area of the support is connected to the upper flange of steel frame lower H-beam 3 using high-strength bolts 13; the upper connecting steel plate 7 with round holes of shear-loaded parallel round hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 is connected to the lower flange of steel frame H-beam 3 using high-strength bolts 13; the lower connecting steel plate 8 of shear-loaded parallel round hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 is connected to the connecting end steel plate 5 of the upper end intersection area of H-beam herringbone support 4 using high-strength bolts 13.
[0025] Material characteristics: The soft steel plates 9 for sealing the dog bone holes on the left and right sides, the soft steel plates 10 for shearing parallel round holes, and the soft steel plates 11 for sealing the front and rear are made of Q235 steel; the steel frame-support structure 1, the connecting end steel plates 5 welded to the upper area of the H-beam herringbone support, the upper connecting steel plate 7 with round holes, and the lower connecting steel plate 8 are all made of Q345B steel; the high-ductility mortar 12 is made of fiber high-performance mortar with a strength grade of 40MPa-80MPa; the high-strength bolts 13 have a strength grade of not less than S8.8.
[0026] Compared with the prior art, this utility model relates to a high-ductility mortar energy dissipation and vibration reduction device and method for shear-loaded parallel circular hole soft steel plates in steel frame-braced structures, which has the following advantages:
[0027] 1. This utility model's energy dissipation and vibration reduction device using parallel circular hole soft steel plates and high-ductility mortar is simple in structure, easy to prepare, and convenient to assemble. The soft steel used in this device is a common type of steel used in building structures. The punching process in the preparation of the circular hole soft steel plates is a mature and feasible steel forming process. The high-ductility mortar injected into the cavity between the steel plates in the energy dissipation and vibration reduction device has stable performance, mature preparation technology, and low price. It overcomes the drawbacks of viscous dampers, viscoelastic dampers, and lead viscoelastic dampers, such as unstable damping force due to medium aging, high temperature sensitivity, and easy damage to seals.
[0028] 2. Compared with traditional soft steel dampers, the high-ductility mortar energy dissipation and vibration reduction device of the parallel circular hole soft steel plate of this utility model can realize the performance-oriented design of the energy dissipation and vibration reduction device according to the seismic resistance requirements of the structure.
[0029] 3. The shear-parallel circular hole soft steel plate and high-ductility mortar energy dissipation and vibration reduction device of this utility model has the characteristics of two lines of defense. The combined structure of front and rear sealing soft steel plates, shear-parallel circular hole soft steel plates and high-ductility mortar welded between the upper and lower connecting steel plates has a large lateral stiffness and can effectively control inter-story displacement, which is the first line of earthquake defense. After the high-ductility mortar cracks, yields and fails first, consuming more seismic energy, the front and rear sealing soft steel plates and shear-parallel circular hole soft steel plates shear yield deformation energy dissipation and vibration reduction, which is the second line of earthquake defense. Attached Figure Description
[0030] Fig. 1 It is a steel frame-bracing structure and a high-ductility mortar energy dissipation and vibration reduction device with shear parallel circular hole soft steel plates connected to it by high-strength bolts. (a) Steel frame-bracing structure; (b) Steel frame-bracing structure-energy dissipation and vibration reduction device system.
[0031] Fig. 2 It is a structure of a high-ductility mortar energy dissipation and vibration reduction device made of soft steel plate with parallel circular holes subjected to shear.
[0032] Fig. 3It is a round hole mild steel plate structure and a skin dog bone hole mild steel plate structure. (a) Round hole mild steel plate structure; (b) Skin round hole mild steel plate. Detailed Implementation
[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0034] like Figs. 1-3 As shown, a shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device is assembled with a steel frame-support structure using high-strength bolts. The steel frame-support structure 1 consists of: steel frame H-shaped steel columns 2, steel frame H-shaped steel beams 3, H-shaped steel herringbone supports 4, and connecting end steel plates 5 welded to the upper intersection area of the supports. The shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 consists of: upper connecting steel plate with circular holes 7, lower connecting steel plate 8, soft steel plates with dog bone holes on the left and right sides for sealing 9, shear-loaded parallel circular hole soft steel plates 10, front and rear sealing soft steel plates 11, and high-ductility mortar 12. The high-strength bolt connection system consists of: H-shaped steel beam-column frame assembly, H-shaped steel herringbone support assembly, and high-strength bolts 13 for assembling the steel frame-support structure and the shear-loaded parallel circular hole soft steel plate laminated rubber energy dissipation and vibration reduction device.
[0035] The steel frame-support structure 1, steel frame H-shaped steel columns 2, and upper and lower steel frame H-shaped steel beams 3 are connected by high-strength bolts 13 to form a steel frame. The upper part of the H-shaped steel herringbone support 4 is welded to the upper flange of the lower steel frame H-shaped steel beam 3 using high-strength bolts 13. The steel frame H-shaped steel columns 2 and steel frame H-shaped steel beams 3 are made of welded or rolled H-shaped steel. The bottom of the steel frame H-shaped steel column 2 is welded to a base plate and stiffening ribs, and the base plate is connected to the pre-embedded bolts in the foundation to form the steel frame column base. The ends of the steel frame H-shaped steel beams 3 are welded with rectangular end plates, which have bolt holes. The bolt holes on the rectangular end plates correspond to the bolt holes on the steel frame H-shaped steel columns 2 and are connected by high-strength bolts. The thickness of the rectangular end plates welded to the ends of the steel frame H-shaped steel beams 3 is not less than that of the steel frame. The flange thickness of H-beam column 2; stiffening ribs are welded to both sides of the web of H-beam column 2 in the steel frame beam-column joint area, and the welding position of the stiffening ribs is consistent with the elevation of the upper and lower flanges of H-beam 3; stiffening ribs are welded to both sides of the web of H-beam at both ends of the connection area between the upper connecting steel plate 7 with the lower flange of H-beam 3, and the thickness of the stiffening ribs is not less than the thickness of the web of the beam; H-beam herringbone support 4 is a symmetrically arranged diagonal H-beam, and the connecting end steel plate 5 is welded to the upper intersection area of H-beam herringbone support 4; the connecting end steel plate 5 welded to the upper intersection area of H-beam herringbone support 4 and the lower connecting steel plate 8 are connected by high-strength bolts 13; the horizontal angle between H-beam herringbone support 4 and H-beam 3 is 45°~60°.
[0036] In the shear-parallel perforated soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6, multiple shear-parallel perforated soft steel plates 10 are arranged vertically side by side, with their upper and lower ends welded to the upper connecting steel plate 7 with perforated holes and the lower connecting steel plate 8, respectively. Soft steel plates 11 are welded to the left and right sides to form a multi-cavity steel component. The outer side of the multi-cavity steel component is a soft steel plate 9 with a sealed skin dog bone hole. The upper connecting steel plate 7 with perforated holes has a reserved perforation. High-ductility mortar 12 is poured into the cavity of the multi-cavity steel component between the welded shear-parallel perforated soft steel plates 10. After curing with the high-ductility mortar, a soft steel plate-high-ductility mortar composite structure is formed.
[0037] The upper connecting steel plate 7 with round holes is a rectangular steel plate with holes for injecting high-ductility mortar and bolt holes. Its thickness is not less than the thickness of the flange of the steel frame H-beam 3. The bolt holes on it correspond to the bolt holes on the lower flange of the steel frame H-beam 3. The upper connecting steel plate 7 with round holes has a high-ductility mortar injection hole on the upper part of each cavity formed by the shear parallel round hole soft steel plate 10. The diameter of the high-ductility mortar injection hole is not less than 20mm. The width of the upper connecting steel plate 7 with round holes is not greater than the flange width of the steel frame H-beam 3.
[0038] The lower connecting steel plate 8 is a rectangular steel plate with connecting bolt holes at the bottom of the high-ductility mortar energy dissipation and vibration reduction structure 6 made of soft steel plate with parallel circular holes subjected to shear, and its size is the same as that of the upper connecting steel plate 7 with circular holes.
[0039] The soft steel plates 9 for sealing the dog bone holes on the left and right sides are rectangular soft thin steel plates with the same perimeter size as the soft steel plates for the dog bone holes. After the outer side of the rectangular soft thin steel plates is covered with skin, they are welded to the left and right ends of the upper connecting steel plate 7 with round holes and the lower connecting steel plate 8.
[0040] The shear-resisting parallel circular hole soft steel plate 10 is a set of parallel circular hole soft steel plates undergoing shear yielding deformation. These plates are formed by punching a series of circles off a rectangular soft steel plate. The thickness of the circular hole soft steel plate is determined based on the stress and energy dissipation requirements. Under a major earthquake, the shear-resisting parallel circular hole soft steel plate 10, welded between the upper and lower connecting steel plates, dissipates seismic energy through shear yielding deformation.
[0041] The aforementioned front and rear sealing soft steel plates 11 are rectangular soft steel plates, forming several cavities with the left and right side sealing skin dog bone hole soft steel plates 9 and the shear-loaded parallel circular hole soft steel plates 10. The front and rear sealing soft steel plates 11 are mainly subjected to shear deformation. Under minor or moderate earthquakes, they can effectively control inter-story displacement by exerting high shear stiffness. Under major earthquakes, they dissipate seismic energy through buckling deformation.
[0042] The high-ductility mortar 12 is poured into the cavity between the parallel circular hole soft steel plate under shear, the soft steel plates with sealing dog bone holes on the left and right sides, and the soft steel plates with sealing front and rear, and flows through the circular holes on the circular hole soft steel plate, forming a soft steel-high-ductility mortar composite structure after curing with the high-ductility mortar.
[0043] High-strength bolts 13 are used for the following connections: forming connection of steel frame-support structure 1, where the end of the steel frame H-beam 3 is provided with a connecting end plate and is assembled and connected to the steel frame H-beam column 2 with bolt holes using high-strength bolts 13 to form a steel frame; the component formed by welding the connecting end steel plate 5 of the H-beam herringbone support 4 to the upper end intersection area of the support is connected to the upper flange of the lower H-beam 3 of the steel frame using high-strength bolts 13; the upper connecting steel plate 7 with round holes of the shear-loaded parallel round hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 is connected to the lower flange of the steel frame H-beam 3 using high-strength bolts 13; the lower connecting steel plate 8 of the shear-loaded parallel round hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure 6 is connected to the connecting end steel plate 5 of the upper end intersection area of the H-beam herringbone support 4 using high-strength bolts 13.
[0044] Material characteristics: The soft steel plates 9 for sealing the dog bone holes on the left and right sides, the soft steel plates 10 for shearing parallel round holes, and the soft steel plates 11 for sealing the front and rear are made of Q235 steel; the steel frame-support structure 1, the connecting end steel plates 5 welded to the upper area of the H-beam herringbone support, the upper connecting steel plate 7 with round holes, and the lower connecting steel plate 8 are all made of Q345B steel; the high-ductility mortar 12 is made of fiber high-performance mortar with a strength grade of 40MPa-80MPa; the high-strength bolts 13 have a strength grade of not less than S8.8.
[0045] Step 1: Fabricate the steel frame-support structure steel components, including H-beams, H-columns, and H-shaped herringbone braces. The factory manufactures and processes the H-beams, H-columns, end plates with bolt holes, stiffening ribs, and cover plates. Bottom plates and cover plates with bolt holes are welded to the bottom and top of the H-columns, respectively. End plates with bolt holes are welded to the ends of the H-beams. Stiffening ribs are welded to the H-columns and H-beams. Bolt holes are drilled on the flanges of the H-columns and H-columns. The H-shaped herringbone braces are fabricated, and connecting end plates are welded to their upper intersection areas.
[0046] Step 2: Processing the mild steel sheet. Cut and shape the mild steel sheet before and after sealing; use a stamping process to punch out distributed round holes on the mild steel sheet base material to form a round hole mild steel sheet; use a stamping process to punch out dog bone holes on the mild steel sheet base material, and then attach and weld rectangular thin mild steel sheets of the same perimeter size to the dog bone hole mild steel sheet to form a skin dog bone hole mild steel sheet.
[0047] Step 3: Prepare the steel components for the energy dissipation and vibration reduction device. First, weld the shear-resistant parallel circular hole soft steel plates to the corresponding positions of the upper connecting plate with the circular hole and the lower connecting plate. Then, weld the soft steel plates with the dog bone holes on the left and right sides of the sealing skin. After that, weld the front and rear sealing soft steel plates and weld the front and rear sealing soft steel plates to the soft steel plates with the dog bone holes on the left and right sides of the sealing skin.
[0048] Step 4: Prepare the shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration damping device. High-ductility mortar is injected into the multi-cavity space between the soft steel plates through the pre-drilled circular holes on the upper connecting plate. After curing, the shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration damping device is formed.
[0049] Step 5: Assemble the steel frame. First, use high-strength bolts to connect and fix the bottom connecting plate of the H-shaped steel column of the steel frame to the foundation; then, use high-strength bolts to connect the end plate of the H-shaped steel beam of the steel frame to the H-shaped steel column of the steel frame.
[0050] Step 6: Assemble the H-beam herringbone supports. Use high-strength bolts to connect the bottom end plates of the two supports of the component, which are welded to the upper flange of the lower steel frame H-beam, at the intersection area of the upper part of the herringbone support.
[0051] Step 7: Assemble the shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device. Use high-strength bolts to connect the upper connecting steel plate with the circular hole to the bolt holes of the lower flange of the H-beam of the steel frame. Then, use high-strength bolts to connect the lower connecting steel plate of the energy dissipation and vibration reduction device to the bolt holes of the upper connecting end steel plate welded to the upper area of the H-beam herringbone support. Example
[0052] First, based on the structural layout of the building design, determine the location and specific dimensions of the H-beams and H-columns of the steel frame; in conjunction with the design of the steel frame, design the H-beam herringbone supports and the connecting end steel plates welded at the intersection of the upper ends of the supports; according to the design requirements of multiple seismic defense lines, design a shear-loaded parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device.
[0053] The construction process of a shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device for steel frame-braced structures is as follows: S1 The factory prepares the steel frame H-beams, H-columns, H-shaped supports, and matching assembly components; S2 The factory cuts, punches, and welds the soft steel plates with dog-bone holes on the left and right sides and the front and rear sealing soft steel plates, and punches the circular hole soft steel plates; S3 The factory processes other steel components of the energy dissipation and vibration reduction device; S4 After welding the shear-parallel circular hole soft steel plates at the corresponding positions of the upper connecting steel plate with circular holes and the lower connecting steel plate, the left and right side sealing skin dog-bone hole soft steel plates are welded, then the front and rear sealing soft steel plates are welded, and finally the left and right side sealing skin dog-bone hole soft steel plates and the front and rear sealing soft steel plates are welded together; S5 High-ductility mortar is prepared and poured into the cavity of the steel components of the energy dissipation and vibration reduction device. After curing, the shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction device is formed.
[0054] On-site, high-strength bolts were used to assemble the steel frame, weld the steel plate components at the upper end of the H-beam herringbone support, and assemble the shear-loaded parallel circular hole soft steel plate laminated rubber energy dissipation and vibration reduction device.
[0055] The above is a typical embodiment of the present invention, and the implementation of the present invention is not limited thereto.
Claims
1. A high-ductility mortar energy dissipation and vibration damping device for soft steel plates with parallel circular holes subjected to shear stress, characterized in that: The structure includes a steel frame-support structure (1) and a shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure (6) installed in the steel frame-support structure (1); the shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure (6) is arranged sequentially along the middle of the steel frame-support structure (1); the shear-parallel circular hole soft steel plate high-ductility mortar energy dissipation and vibration reduction structure (6) includes a multi-cavity steel member formed by welding an upper connecting steel plate with circular holes (7), a lower connecting steel plate (8), a soft steel plate with sealed skin dog bone holes (9), a shear-parallel circular hole soft steel plate (10), and a sealed soft steel plate (11), and high-ductility mortar (12) poured into the cavity of the multi-cavity steel member; In the steel frame-support structure (1), the steel frame H-shaped steel columns (2) and the upper and lower steel frame H-shaped steel beams (3) are connected by high-strength bolts (13) to form a steel frame. The upper part of the H-shaped steel herringbone support (4) is welded to the steel plate component at the end of the connection and connected to the upper flange of the lower steel frame H-shaped steel beam (3) by high-strength bolts (13). The bottom of the steel frame H-shaped steel column (2) is welded to the bottom plate and stiffening ribs. The bottom plate is connected to the pre-embedded bolts in the foundation to form the steel frame column foot. The ends of the steel frame H-shaped steel beam (3) are welded to rectangular end plates. Bolt holes are opened on the rectangular end plates. The bolt holes on the rectangular end plates correspond to the bolt holes on the steel frame H-shaped steel column (2) and are connected by high-strength bolts. The ends of the steel frame H-shaped steel beam (3) are welded to the bottom plate. The thickness of the rectangular end plate is not less than the flange thickness of the steel frame H-beam column (2); stiffening ribs are welded on both sides of the web of the steel frame H-beam column (2) in the steel frame beam-column joint area, and the welding position of the stiffening ribs is consistent with the elevation of the upper and lower flanges of the steel frame H-beam (3); stiffening ribs are welded on both sides of the web of the H-beam at both ends of the connection area between the upper connecting steel plate with round hole (7) and the lower flange of the steel frame H-beam (3), and the thickness of the stiffening ribs is not less than the thickness of the web of the beam; the H-beam herringbone support (4) is a symmetrically arranged oblique H-beam, and the connecting end steel plate (5) is welded at the upper intersection area of the H-beam herringbone support (4); the connecting end steel plate (5) welded at the upper intersection area of the H-beam herringbone support (4) is connected to the lower connecting steel plate (8) by high-strength bolts (13).
2. The high-ductility mortar energy dissipation and vibration reduction device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The horizontal angle between the H-beam herringbone support (4) and the H-beam (3) of the steel frame is 45°~60°.
3. The high-ductility mortar energy dissipation and vibration damping device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The steel frame H-beams (2) and steel frame H-beams (3) are made of welded H-beams or rolled H-beams.
4. The high-ductility mortar energy dissipation and vibration reduction device for soft steel plates with parallel circular holes under shear as described in claim 1, characterized in that: In the shear-parallel circular hole soft steel plate high ductility mortar energy dissipation and vibration reduction structure (6), multiple shear-parallel circular hole soft steel plates (10) are arranged vertically side by side, and the upper and lower ends are welded to the upper connecting steel plate with circular holes (7) and the lower connecting steel plate (8) respectively. The left and right sides are welded to the sealing soft steel plates (11) to form a multi-cavity steel component. The outer side of the multi-cavity steel component is a sealing skin dog bone hole soft steel plate (9). The upper connecting steel plate with circular holes (7) is provided with a reserved circular hole. High ductility mortar (12) is poured into the cavity of the multi-cavity steel component between the welded shear-parallel circular hole soft steel plates (10). After curing with high ductility mortar, a soft steel plate-high ductility mortar combination structure is formed.
5. The high-ductility mortar energy dissipation and vibration damping device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The upper connecting steel plate with round holes (7) is a rectangular steel plate with holes for injecting high-ductility mortar and bolt holes. Its thickness is not less than the thickness of the flange of the steel frame H-beam (3). The bolt holes on it correspond to the bolt holes on the lower flange of the steel frame H-beam (3). The upper connecting steel plate with round holes (7) has a high-ductility mortar injection hole on the upper part of each cavity formed by the shear parallel round hole soft steel plate (10). The diameter of the high-ductility mortar injection hole is not less than 20mm. The width of the upper connecting steel plate with round holes (7) is not greater than the flange width of the steel frame H-beam (3).
6. The high-ductility mortar energy dissipation and vibration reduction device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The lower connecting steel plate (8) is a rectangular steel plate with connecting bolt holes at the bottom of the shear-parallel round hole soft steel plate high ductility mortar energy dissipation and vibration reduction structure (6), and its size is consistent with the upper connecting steel plate with round holes (7).
7. The high-ductility mortar energy dissipation and vibration reduction device for soft steel plates with parallel circular holes under shear as described in claim 1, characterized in that: The soft steel plate (9) used to seal the dog bone hole of the skin is a rectangular soft thin steel plate with the same perimeter size as the soft steel plate of the dog bone hole. After the skin is attached to the outside of the rectangular soft thin steel plate, it is welded to the left and right ends of the upper connecting steel plate with round hole (7) and the lower connecting steel plate (8).
8. The high-ductility mortar energy dissipation and vibration reduction device for soft steel plates with parallel circular holes under shear as described in claim 1, characterized in that: The shear-resisting parallel circular hole soft steel plate (10) is a set of parallel circular hole soft steel plates subjected to shear yield deformation. The circular hole soft steel plate is formed by punching a series of circles off a rectangular soft steel plate.
9. The high-ductility mortar energy dissipation and vibration reduction device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The sealing soft steel plate (11) mentioned above is a rectangular soft steel plate, which forms several cavities with the sealing skin dog bone hole soft steel plate (9) and the shear parallel round hole soft steel plate (10).
10. The high-ductility mortar energy dissipation and vibration reduction device for shear-loaded parallel circular hole soft steel plates according to claim 1, characterized in that: The soft steel plates (9) for sealing the dog bone holes on the left and right sides, the soft steel plates (10) for shear parallel round holes, and the soft steel plates (11) for sealing the front and rear are made of Q235 steel; the steel frame-support structure (1), the connecting end steel plates (5) welded to the upper area of the H-beam herringbone support, the upper connecting steel plate with round holes (7), and the lower connecting steel plate (8) are all made of Q345B steel; the high ductility mortar (12) is made of high-performance fiber mortar with a strength grade of 40MPa-80MPa; the high-strength bolts (13) have a strength grade of not less than S8.8.