Bent parallel dog bone hole mild steel plate high-ductility mortar energy dissipation and shock absorption device and manufacturing method

Abstract

The bending parallel dog bone hole mild steel plate high-ductility mortar energy dissipation and shock absorption device is composed of an upper connecting steel plate with a round hole, a lower connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, a lower connecting steel plate and a lower connecting steel plate, wherein the upper connecting steel plate is connected with a lower flange of an H-shaped steel frame beam; the upper connecting steel plate and the lower connecting steel plate are welded between the upper connecting steel plate and the lower connecting steel plate, and the left-side and right-side blocking skin dog-bone hole mild steel plate, the bending parallel dog-bone hole mild steel plate and the front-back blocking mild steel plate are welded between the upper connecting steel plate and the lower connecting steel plate. And the upper and lower connecting steel plates are connected with the high-strength bolt system of the steel frame-supporting structure. Under the action of strong shock, the front and rear plugging mild steel plates are subjected to buckling deformation energy dissipation and shock absorption, the sections of the parallel dog bone hole mild steel plates are subjected to nearly-equal-strength bending plastic deformation consumption shock absorption, and the high-ductility mortar combined with the mild steel plates is subjected to whole-process consumption shock absorption of cracking, yielding and damage, so that the energy dissipation and shock absorption effect of the device can be effectively improved.

Description

Technical Field

[0001] The invention relates to a high-ductility mortar energy dissipation and shock absorption device for a steel frame-supporting structure with a parallel dog-bone hole in a soft steel plate and a manufacturing method thereof, and belongs to the technical field of building shock absorption. Background Art

[0002] Improving the seismic performance of buildings is the key to solving the problem of building damage and collapse under strong earthquakes. Three technologies are usually used to improve the ability of buildings to resist earthquake damage and collapse economically, efficiently and reasonably: the first is seismic design technology, that is, the use of efficient seismic structural systems and high-performance seismic components to improve the seismic resistance of structures; the second is seismic isolation design technology, that is, the use of basic seismic isolation devices to reduce the effect of earthquakes on the upper structure; the third is energy dissipation and shock reduction technology, that is, the use of energy dissipation and shock reduction devices to consume the energy input into the structure by the earthquake and reduce the damage to the structure. If the weak energy dissipation and shock reduction device is damaged under strong earthquakes, it can be updated. Building seismic isolation and shock reduction technology can be applied in combination.

[0003] The engineering community at home and abroad has always attached great importance to the research and development of new energy dissipation and shock absorption devices. At present, energy dissipation and shock absorption devices mainly include viscous dampers, metal dampers, friction dampers, etc. However, there is a lack of functional and easily recoverable energy dissipation and shock absorption devices and manufacturing technologies suitable for performance-based design and with multiple anti-seismic lines.

[0004] The present invention proposes a high-ductility mortar energy dissipation and shock absorption device and method for bending parallel dog-bone hole mild steel plate for steel frame-support structure, which belongs to the technical field of building shock absorption. The device is composed of an upper connecting steel plate with circular holes connected to the lower flange of the H-beam of the steel frame, a lower connecting steel plate connected to the end plate welded to the intersection area of ​​the H-shaped support, left and right side sealing skin dog-bone hole mild steel plates welded between the upper and lower connecting steel plates, bending parallel dog-bone hole mild steel plates welded between the upper and lower connecting steel plates, front and rear sealing mild steel plates welded between the upper and lower connecting steel plates, high-ductility mortar poured through the circular holes of the upper connecting steel plate located at the cavity position between the bending parallel dog-bone hole mild steel plates, and a high-strength bolt system connecting the upper and lower connecting steel plates with the steel frame-support structure. Under the action of small or moderate earthquakes, the front and rear blocking mild steel plates and the high-ductility mortar combined rectangular blocks of the parallel dog-bone hole mild steel plates of this energy dissipation and shock absorption device can play the role of large shear stiffness and effectively control the interlayer displacement, which is the first line of seismic defense; under the action of large earthquakes, the front and rear blocking mild steel plates and high-ductility mortar of this energy dissipation and shock absorption device gradually shear and buckle to destroy and consume seismic energy, which is the first line of seismic defense; as the deformation increases, the high-ductility mortar and the mild steel plates work together to crack, yield and destroy, and the whole process consumes more seismic energy, and the parallel dog-bone hole mild steel plate section undergoes nearly equal-strength bending plastic deformation to consume seismic energy, which is the second line of seismic defense; the energy dissipation and shock absorption effect of the device can be effectively improved.

[0005] Technical bottlenecks: 1. Viscous dampers are greatly affected by temperature and cannot exert their full shock absorption capacity at higher or lower temperatures. The aging of the medium used in the viscous damper leads to unstable damping force. Due to the high pressure and high speed flow of the medium inside the damper, the seals are easily damaged under long-term operation, resulting in leakage problems, so their maintenance costs are high; 2. Viscoelastic dampers and lead viscoelastic dampers also have problems such as sensitivity to ambient temperature and large environmental influence on damping parameters; 3. Metal dampers use the elastic-plastic hysteresis deformation generated when metal elements made of low-yield point steel and other materials yield to dissipate energy. They are less affected by external environment and temperature changes, but have problems such as low initial stiffness and large yield displacement, that is, they cannot provide sufficient stiffness under small earthquakes, and begin to consume energy under large earthquakes, but the recoverability is poor, making it difficult to perform performance-based design according to the seismic requirements of the structure. Technical bottlenecks: A low-cost energy dissipation and shock absorption device assembled between a steel frame and a herringbone steel support that has the advantages of both soft steel energy dissipation and high ductility mortar energy dissipation. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a high ductility mortar energy dissipation and shock absorption device for a steel frame-support structure with parallel dog bone holes in a soft steel plate and a method thereof: The high-ductility mortar energy dissipation and shock absorption device for the bending parallel dog-bone hole mild steel plate is composed 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 welded to the end plate at the intersection area of ​​the H-shaped steel herringbone support, left and right side sealing skin dog-bone hole mild steel plates welded between the upper and lower connecting steel plates, bending parallel dog-bone hole mild steel plates welded between the upper and lower connecting steel plates, front and rear sealing mild steel plates welded between the upper and lower connecting steel plates, high-ductility mortar poured through the circular holes in the cavity position between the bending parallel dog-bone hole mild steel plates in the upper connecting steel plate, and a high-strength bolt system connecting the upper and lower connecting steel plates with the steel frame-support structure.

[0007] The dog-bone hole mild steel plate is a mild steel plate obtained by punching out a series of polygonal holes divided into dog-bone shapes from a rectangular mild steel plate.

[0008] The bending parallel dog-bone hole mild steel plate is a group of parallel dog-bone hole mild steel plates mainly subjected to bending deformation and welded between the upper and lower connecting steel plates of the energy dissipation and shock absorption device.

[0009] The left and right sides of the soft steel plates for sealing the dogbone holes in the skin are rectangular soft thin steel plates with the same peripheral size as the dogbone hole soft steel plates, which are welded to the dogbone hole soft steel plates from the outside 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 shock absorption device.

[0010] The front and rear blocking mild steel plates are rectangular mild steel plates, which are welded to the front and rear surfaces between the upper and lower connecting steel plates of the energy dissipation and shock absorption device, and are welded to the left and right side blocking skin dog bone hole mild steel plates, forming a multi-cavity structure with the bending parallel dog bone hole mild steel plates and the left and right side blocking skin dog bone hole mild steel plates.

[0011] The high ductility mortar is poured into the cavity between the dog-bone hole mild steel plates of the energy dissipation and shock absorption device to flow and connect the adjacent dog-bone hole mild steel plates, the left and right side blocking mild steel plates, and the front and rear blocking mild steel plates. After curing, the high ductility mortar forms a mild steel plate-high ductility mortar combination structure.

[0012] The energy dissipation and shock absorption device assembly connection structure refers to the upper connecting steel plate with round holes being connected to the lower flange of the H-shaped steel beam of the steel frame through high-strength bolts, and the lower connecting steel plate being connected to the H-shaped steel herringbone support intersection area welded connection end steel plate, and the connection adopts a high-strength bolt assembly connection structure.

[0013] To achieve the above object, the present invention adopts the following technical solutions: A high-ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog-bone holes subjected to bending assembled with high-strength bolts of a steel frame-support structure, comprising a steel frame-support structure 1, and a high-ductility energy dissipation and shock absorption structure 6 of a mild steel plate with parallel dog-bone holes subjected to bending arranged in the steel frame-support structure 1; the high-ductility energy dissipation and shock absorption structure 6 of a mild steel plate with parallel dog-bone holes subjected to bending is arranged sequentially along the middle of the steel frame-support structure 1; the high-ductility energy dissipation and shock absorption structure 6 of a mild steel plate with parallel dog-bone holes subjected to bending comprises a multi-cavity steel component formed by welding an upper connecting steel plate with circular holes 7, a lower connecting steel plate 8, a mild steel plate with dog-bone holes for blocking skin, a mild steel plate with parallel dog-bone holes subjected to bending 10, and a mild steel plate for blocking 11, and a high-ductility mortar 12 poured into the cavity of the multi-cavity steel component.

[0014] Furthermore, 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 respectively connected by high-strength bolts 13 to form a steel frame; the bottom area of ​​the H-shaped steel herringbone support 4 is welded to the end steel plate member and connected to the upper flange of the lower steel frame H-shaped steel beam 3 by high-strength bolts 13. The steel frame H-shaped steel columns 2 and the 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 the bottom plate and the stiffening ribs, and the bottom plate is connected to the screws embedded in the foundation to form the steel frame column foot; the end of the frame H-shaped steel beam 3 is welded with a rectangular end plate, and bolt holes are opened on the rectangular end plate. The bolt holes on the rectangular end plate correspond to the bolt holes on the steel frame H-shaped steel column 2, and are connected by high-strength bolts 13; the thickness of the rectangular end plate welded at the end of the steel frame H-shaped steel beam 3 is not less than the thickness of the steel frame Flange thickness of H-shaped steel column 2; stiffening ribs are welded on both sides of the web of H-shaped steel column 2 in the beam-column node area of ​​the steel frame, and the welding position of the stiffening ribs is consistent with the elevation of the upper and lower flanges of the H-shaped steel beam 3 of the steel frame; stiffening ribs are welded on both sides of the web of the H-shaped steel beam at both ends of the connection area between the upper connecting steel plate with circular holes 7 and the lower flange of the H-shaped steel beam 3 of the steel frame, and the thickness of the stiffening ribs is not less than the thickness of the web of the H-shaped steel beam; the H-shaped steel herringbone support 4 is a symmetrically arranged oblique H-shaped steel, and the connecting end steel plate 5 is welded in the upper intersection area of ​​the H-shaped steel herringbone support 4; the connecting end steel plate 5 welded in the upper intersection area of ​​the H-shaped steel herringbone support 4 is connected to the lower connecting steel plate 8 by high-strength bolts 13; the horizontal angle between the H-shaped steel herringbone support 4 and the steel frame H-shaped steel beam 3 is 45°~60°.

[0015] Furthermore, in the high-ductility energy dissipation and shock absorption structure 6 of the bending parallel dog-bone hole mild steel plate, a plurality of the bending parallel dog-bone hole mild steel plates 10 are arranged vertically in parallel, and the upper and lower ends are respectively welded to the upper connecting belt circular hole steel plate 7 and the lower connecting steel plate 8, and the left and right sides are respectively welded to the sealing mild 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 mild steel plate 9; the upper connecting belt circular hole steel plate 7 is provided with a reserved circular hole, and high-ductility mortar 12 is poured into the cavity of the multi-cavity steel component between the welded bending parallel dog-bone hole mild steel plates 10, and after curing, the high-ductility mortar 12 is integrally formed with the multi-cavity steel component to form a high-ductility mortar energy dissipation and shock absorption device 6 of the bending parallel dog-bone hole mild steel plate.

[0016] Furthermore, the upper connecting steel plate with circular holes 7 is provided with a rectangular steel plate with reserved circular holes and bolt holes, and its thickness is not less than the thickness of the flange of the steel frame H-shaped steel beam 3, and the positions of the bolt holes opened thereon correspond to the positions of the bolt holes on the lower flange of the steel frame H-shaped steel beam 3; the upper connecting steel plate with circular holes 7 is provided with a reserved circular hole in the upper part of the cavity formed by each bending parallel dog-bone hole soft steel plate 10, and the reserved circular hole is a ductile mortar pouring hole, and the diameter of the high ductility mortar pouring hole is not less than 20 mm, and the width of the upper connecting steel plate with circular holes 7 is not greater than the width of the flange of the steel frame H-shaped steel beam 3.

[0017] Furthermore, the lower connecting steel plate 8 is a rectangular steel plate with connecting bolt holes at the bottom of the bending parallel dog-bone hole soft steel plate high ductility energy dissipation and shock absorption structure 6, and its size is consistent with the upper connecting steel plate with round holes 7.

[0018] 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 peripheral dimensions as the soft steel plate 10 for the dog-bone hole parallel to the bending. The outer side of the rectangular soft thin steel plate is covered with the skin and then welded to the left and right ends of the upper connecting belt circular hole steel plate 7 and the lower connecting steel plate 8.

[0019] Furthermore, the bending parallel dog-bone hole mild steel plate 10 is a group of parallel cross-sections with nearly equal strength bending yield deformation with dog-bone holes, and the mild steel plate with dog-bone holes is formed by punching out a series of polygonal holes divided in a dog-bone manner from a rectangular mild steel plate. The thickness of the mild steel plate with dog-bone holes is determined according to the force and energy consumption requirements. Under the action of a large earthquake, the bending parallel dog-bone hole mild steel plate 10 welded between the upper and lower connecting steel plates has nearly equal strength bending yield deformation in the cross section to consume seismic energy.

[0020] Furthermore, the front and rear blocking mild steel plates 11 are rectangular mild steel plates, and a plurality of cavities are formed between the soft steel plates 9 blocking the skin dog bone holes and the soft steel plates 10 for bending parallel dog bone holes. The front and rear blocking mild steel plates 11 are mainly shear-deformed, and play a role of large shear stiffness under small or medium earthquakes to effectively control inter-layer displacement, and consume seismic energy through buckling deformation under large earthquakes.

[0021] Furthermore, the high ductility mortar 12 is poured into the cavity between the dog-bone hole mild steel plates of the energy dissipation and shock absorption device, and flows between adjacent dog-bone hole mild steel plates 10, skin dog-bone hole mild steel plates 9, and front and rear blocking mild steel plates 11. After curing, the high ductility mortar 12 forms a mild steel plate-high ductility mortar combination structure.

[0022] Furthermore, the high-strength bolts 13 are used for the following connections: a formed connection between a steel frame and a supporting structure 1, a connecting end plate is provided at the end of the steel frame H-shaped steel beam 3 and assembled and connected with a steel frame H-shaped steel column 2 with bolt holes by high-strength bolts 13 to form a steel frame; a component formed by welding the connecting end steel plate 5 welded to the intersection area of ​​the H-shaped steel herringbone support 4 and the upper end of the support is connected to the upper flange of the H-shaped steel beam 3 under the steel frame by high-strength bolts 13; the upper connecting steel plate with circular holes 7 of the high-ductility mortar energy dissipation and shock absorption device 6 of the bending parallel dog-bone hole soft steel plate is connected to the lower flange of the H-shaped steel beam 3 of the steel frame by high-strength bolts 13; the lower connecting steel plate 8 of the high-ductility mortar energy dissipation and shock absorption device 6 of the bending parallel dog-bone hole soft steel plate is connected to the connecting end steel plate 5 welded to the upper end intersection area of ​​the upper support of the H-shaped steel herringbone support 4 by high-strength bolts 13.

[0023] Material characteristics: The soft steel plate 9 for sealing the dogbone holes in the skin, the soft steel plate 10 for bending parallel dogbone holes, and the front and rear sealing soft steel plates 11 are made of Q235 steel; the steel frame-supporting structure 1, the connecting end steel plate 5 welded in the upper end area of ​​the H-shaped steel 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 adopts fiber high-performance mortar with a strength grade of 40MPa-80MPa; the strength grade of the high-strength bolts 13 is not lower than S8.8.

[0024] The present invention relates to a high-ductility mortar energy dissipation and shock absorption device for a steel frame-support structure with parallel dog-bone holes in a soft steel plate, and a method thereof. The specific method is as follows: Step 1: Prepare steel frame-supporting structural steel components, including steel frame H-beams, steel frame H-beam columns, and H-beam herringbone supports. The factory produces and processes steel frame H-beam columns, steel frame H-beam beams, end plates with bolt holes, stiffening ribs, and cover plates; weld bottom plates and steel cover plates with bolt holes at the bottom and top of steel frame H-beam columns respectively; weld end plates with bolt holes at the ends of steel frame H-beam beams; weld stiffening ribs on steel frame H-beam columns and steel frame H-beams; open bolt holes on the flanges of steel frame H-beam beams and steel frame H-beam columns; process H-beam herringbone diagonal supports, and weld connecting end steel plates at the intersection area at their upper ends.

[0025] Step 2: Processing the mild steel plate. The mild steel plate is sealed before and after cutting and forming; the dog-bone hole is punched out on the mild steel plate base material by stamping technology to form a dog-bone hole mild steel plate; the dog-bone hole mild steel plate is welded with a rectangular thin mild steel plate of the same peripheral size to form a skinned dog-bone hole mild steel plate.

[0026] Step 3: Prepare the steel components of the energy dissipation and shock absorption device. First, weld the bending parallel dog bone hole soft steel plate at the corresponding positions of the upper connecting belt circular hole steel plate and the lower connecting plate, then weld the left and right sides of the skin dog bone hole soft steel plate, and then weld the front and rear blocking soft steel plates and weld the front and rear blocking soft steel plates to the left and right sides of the skin dog bone hole soft steel plates.

[0027] Step 4: Prepare a high-ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending. The high-ductility mortar is poured into the cavity between the soft steel plates with dog-bone holes through the pouring circular holes on the upper connecting plate. The high-ductility mortar flows through the soft steel plates with parallel dog-bone holes. After curing, the high-ductility mortar forms a high-ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending.

[0028] Step 5: Assemble the steel frame. First, use high-strength bolts to connect and fix the bottom connection 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.

[0029] Step 6: Assemble the H-shaped steel herringbone support. Use high-strength bolts to connect the two support bottom connection end plates of the components welded with the end steel plates at the intersection area of ​​the upper end of the H-shaped steel herringbone support to the upper flange of the H-shaped steel beam of the lower steel frame.

[0030] Step 7: Assemble the bending parallel dog bone hole soft steel plate to the high ductility mortar energy dissipation and shock absorption device. Use high-strength bolts to connect the upper connecting steel plate with round holes of the energy dissipation and shock absorption device to the bolt hole of the lower flange of the H-shaped steel beam of the steel frame, and then use high-strength bolts to connect the lower connecting steel plate of the energy dissipation and shock absorption device to the upper connecting end plate bolt hole welded in the upper end area of ​​the H-shaped steel herringbone support.

[0031] Compared with the prior art, the present invention relates to a high-ductility mortar energy dissipation and shock absorption device and method for a bending parallel dog-bone hole mild steel plate for a steel frame-support structure, which has the following advantages: 1. The energy dissipation and shock absorption device of the present invention with high ductility mortar of the bending parallel dog-bone hole mild steel plate has a simple structure, is easy to prepare, easy to assemble and has low cost. The mild steel and high ductility mortar used in the energy dissipation and shock absorption device of the present invention are common materials in the current building materials market. The high ductility mortar is much cheaper than lead materials and vulcanized rubber materials. The punching process in the preparation process of the dog-bone hole mild steel plate is a mature process for steel forming at present, and it is highly feasible. The process of pouring high ductility mortar inside the energy dissipation and shock absorption device is simple. The high ductility mortar has stable performance and good durability, which overcomes the disadvantages of unstable damping force, high temperature sensitivity and easy damage of seals caused by aging of the medium of viscous dampers, viscoelastic dampers and lead viscoelastic dampers.

[0032] 2. The energy dissipation and shock absorption device of the invention with parallel dog-bone holes in the bending of the mild steel plate and high ductility mortar has the characteristics of two lines of seismic defense. Under the action of a small or medium earthquake, the front and rear blocking mild steel plates and the rectangular block of the mild steel plate-high ductility mortar combination of the energy dissipation and shock absorption device can play a role of large shear stiffness and effectively control the interlayer displacement, which is the first line of seismic defense. Under the action of a large earthquake, the front and rear blocking mild steel plates of the energy dissipation and shock absorption device consume seismic energy through shear buckling deformation, the high ductility mortar consumes seismic energy through cracking, yielding and destruction, and the cross-section of the parallel dog-bone holes in the bending consumes seismic energy through nearly equal strength bending plastic deformation, which is the second line of seismic defense. Compared with traditional mild steel dampers, the performance design of the energy dissipation and shock absorption device can be realized according to the seismic requirements of the structure.

[0033] 3. The high-ductility mortar energy dissipation and shock absorption device of the soft steel plates with parallel dog-bone holes subjected to bending of the present invention has the synergistic force characteristics of soft steel and high-ductility mortar. Mild steel has good plastic ductile deformation energy dissipation capacity, and high-ductility mortar also has elastic-plastic ductile deformation capacity, which combines the advantages of high ductility deformation of the two materials. The high-ductility mortar running through the soft steel plates with parallel dog-bone holes subjected to bending synergistic deformation with the soft steel plates to consume seismic energy, thereby effectively improving the energy dissipation and shock absorption effect of the energy dissipation and shock absorption device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Steel frame-support structure and high-ductility energy dissipation and shock absorption device of soft steel plate with parallel dog-bone holes connected to it with high-strength bolts. (a) is the steel frame-support structure; (b) is the steel frame-support structure-energy dissipation and shock absorption device system.

[0035] Figure 2 High ductility energy dissipation and shock absorption device structure of mild steel plate with parallel dog-bone holes under bending.

[0036] Figure 3 Dog-bone hole mild steel plate structure Mixed skin dog-bone hole mild steel plate structure. (a) is a dog-bone hole mild steel plate structure; (b) is a skin dog-bone hole mild steel plate structure. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0038] like Figure 1-3 As shown, a high-ductility mortar energy dissipation and shock absorption device of a soft steel plate with parallel dog-bone holes subjected to bending, which is assembled with high-strength bolts connected to a steel frame-support structure, wherein the steel frame-support structure 1 is composed of: a steel frame H-shaped steel column 2, a steel frame H-shaped steel beam 3, an H-shaped steel herringbone support 4, and a connecting end steel plate 5 welded in the intersection area of ​​the upper end of the support; a soft steel plate with parallel dog-bone holes subjected to bending, and a laminated rubber energy dissipation and shock absorption structure 6 is composed of: an upper connecting steel plate with round holes 7, a lower connecting steel plate 8, soft steel plates 9 for sealing skin dog-bone holes on the left and right sides, soft steel plates with parallel dog-bone holes subjected to bending 10, front and rear sealing soft steel plates 11, and high-ductility mortar 12; a high-strength bolt connection system: an H-shaped steel beam-column frame assembly, an H-shaped steel herringbone support assembly, and high-strength bolts 13 assembled between the steel frame-support structure and the laminated rubber energy dissipation and shock absorption device with parallel dog-bone holes subjected to bending.

[0039] The steel frame-support structure 1 is constructed by connecting the steel frame H-shaped steel columns 2 and the upper and lower steel frame H-shaped steel beams 3 with high-strength bolts 13 to form a steel frame, and then welding the end steel plate components in the upper end area of ​​the H-shaped steel herringbone support 4 to the upper flange of the lower H-shaped steel beam with high-strength bolts 13. The steel frame H-shaped steel columns 2 and the 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 columns 2 are welded to the bottom plate and the stiffening ribs, and the bottom plate is connected to the screws embedded in the foundation to form the steel frame column foot; the end of the steel frame H-shaped steel beam 3 is welded with a rectangular end plate, and bolt holes are opened on the rectangular end plate. The bolt holes on the rectangular end plate correspond to the bolt holes on the steel frame H-shaped steel columns 2, and are connected with high-strength bolts; the thickness of the rectangular end plate welded at the end of the steel frame H-shaped steel beam 3 is not less than the thickness of the flange of the steel frame H-shaped steel column 2 ; Stiffening ribs are welded on both sides of the web of the steel frame H-shaped steel column 2 in the steel frame beam-column node 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-shaped steel beam 3; Stiffening ribs are welded on both sides of the web of the H-shaped steel beam at both ends of the connection area between the upper connecting plate of the bending parallel dog-bone hole soft steel plate laminated rubber energy dissipation and shock absorption structure 6 and the lower flange of the steel frame H-shaped steel beam 3, and the thickness of the stiffening ribs is not less than the thickness of the beam web; The H-shaped steel herringbone support 4 is a symmetrically arranged oblique H-shaped steel, and the connecting end steel plate 5 is welded in the upper intersection area of ​​the H-shaped steel herringbone support 4; The connecting end steel plate 5 welded in the upper intersection area of ​​the H-shaped steel herringbone support 4 is connected to the lower connecting steel plate 8 by high-strength bolts 13; The horizontal angle between the H-shaped steel herringbone support 4 and the steel frame H-shaped steel beam 3 is 45°~60°.

[0040] The described bending parallel dog bone hole mild steel plate laminated rubber energy dissipation and shock absorption structure 6 is composed of a multi-cavity steel component formed by welding an upper connecting belt circular hole steel plate 7, a lower connecting steel plate 8, a left and right side blocking skin dog bone hole mild steel plate 9, a bending parallel dog bone hole mild steel plate 10, and a front and rear blocking mild steel plate 11, and a high ductility mortar 12 poured into its cavity. The left and right side blocking skin dog bone hole mild steel plates 9, the bending parallel dog bone hole mild steel plates 10, and the front and rear blocking mild steel plates 11 are all welded to the upper connecting belt circular hole steel plate 7 and the lower connecting steel plate 8; high ductility mortar is poured into the cavity between the welded mild steel plates of the energy dissipation and shock absorption device through the reserved circular holes of the upper connecting belt circular hole steel plate 7, and the high ductility mortar is cured to form a mild steel plate-high ductility mortar combined structure 12; the high ductility mortar and the welded mild steel plates constitute the bending parallel dog bone hole mild steel plate laminated rubber energy dissipation and shock absorption structure 6.

[0041] The upper connecting steel plate with round holes 7 is a rectangular steel plate with high-ductility mortar pouring holes and bolt holes. Its thickness is not less than the thickness of the flange of the steel frame H-shaped steel beam 3. The positions of the bolt holes opened thereon correspond to the positions of the bolt holes on the lower flange of the steel frame H-shaped steel beam 3. The upper connecting steel plate with round holes 7 has a ductile mortar pouring hole in the upper part of each cavity formed by the bending parallel dog-bone hole soft steel plate 10. The diameter of the high-ductility mortar pouring hole is not less than 20 mm, and the width of the upper connecting steel plate with round holes 7 is not greater than the width of the flange of the steel frame H-shaped steel beam 3.

[0042] The lower connecting steel plate 8 is a rectangular steel plate with connecting bolt holes at the bottom of the bending parallel dog-bone hole soft steel plate laminated rubber energy dissipation and shock absorption structure 6, and its size is consistent with the upper connecting steel plate with round holes 7.

[0043] The left and right sides of the soft steel plates 9 for sealing the dogbone holes in the skin are made of rectangular soft thin steel plates with the same peripheral dimensions as the dogbone hole soft steel plates, which are welded to the dogbone hole soft steel plates from the outside, and then welded to the soft steel plates on the left and right ends of the energy dissipation and shock absorption device connecting the round hole steel plate 7 and the lower connecting steel plate 8.

[0044] The bending parallel dog-bone hole mild steel plate 10 is a group of parallel cross-section mild steel plates with dog-bone holes and nearly equal strength bending yield deformation. The dog-bone hole mild steel plate is formed by punching out a series of polygonal holes in a rectangular mild steel plate. The thickness of the dog-bone hole mild steel plate is determined according to the force and energy consumption requirements. Under the action of a large earthquake, the bending parallel dog-bone hole mild steel plate 10 welded between the upper and lower connecting steel plates has nearly equal strength bending yield deformation in the cross section to consume seismic energy.

[0045] The front and rear blocking mild steel plates 11 are rectangular mild steel plates, and form a plurality of cavities between the left and right side blocking skin dog bone hole mild steel plates 9 and the bending parallel dog bone hole mild steel plates 10. The front and rear blocking mild steel plates 11 are mainly shear deformation, and under the action of small or medium earthquakes, they can play a role of large shear stiffness to effectively control the inter-layer displacement, and under the action of large earthquakes, they consume seismic energy through buckling deformation.

[0046] The high-ductility mortar 12 is a high-ductility mortar poured into the cavity between the dog-bone hole mild steel plates of the energy dissipation and shock absorption device, which flows between adjacent dog-bone hole mild steel plates, left and right side blocking mild steel plates, and front and rear blocking mild steel plates. After curing, the high-ductility mortar forms a mild steel plate-high-ductility mortar combination structure.

[0047] The high-strength bolts 13 are used for the following connections: forming connection of steel frame-support structure 1, a connecting end plate is set at the end of the steel frame H-shaped steel beam 3 and assembled and connected with the steel frame H-shaped steel column 2 with bolt holes by high-strength bolts 13 to form a steel frame; the component formed by welding the connecting end steel plate 5 welded to the intersection area of ​​the H-shaped steel herringbone support 4 and the upper end of the support is connected to the upper flange of the lower steel frame H-shaped steel beam 3 by high-strength bolts 13; the upper connecting steel plate with circular holes 7 of the bending parallel dog bone hole soft steel plate laminated rubber energy dissipation and shock absorption structure 6 is connected to the lower flange of the steel frame H-shaped steel beam 3 by high-strength bolts 13; the lower connecting steel plate 8 of the bending parallel dog bone hole soft steel plate laminated rubber energy dissipation and shock absorption structure 6 is connected to the connecting end steel plate 5 welded to the upper end intersection area of ​​the upper support of the H-shaped steel herringbone support 4 by high-strength bolts 13.

[0048] Material characteristics: The left and right side soft steel plates 9 for sealing the skin dogbone holes, the bending parallel dogbone hole soft steel plates 10, and the front and rear sealing soft steel plates 11 are made of Q235 steel; the steel frame-support structure 1, the connecting end steel plate 5 welded in the upper end area of ​​the H-shaped steel 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 adopts a high-performance fiber mortar with a strong strength grade of 40MPa-80MPa; the strength grade of the high-strength bolts 13 is not lower than S8.8.

[0049] The present invention relates to a high-ductility mortar energy dissipation and shock absorption device for a steel frame-support structure with parallel dog-bone holes in a soft steel plate, and a method thereof. The specific method is as follows: Step 1: Prepare steel frame-supporting structural steel components, including steel frame H-beams, H-beam columns, and H-beam herringbone supports. The factory produces and processes steel frame H-beam columns, H-beam beams, end plates with bolt holes, stiffening ribs, and cover plates; welds bottom plates and steel cover plates with bolt holes at the bottom and top of H-beam columns respectively; welds end plates with bolt holes at the ends of H-beam beams; welds stiffening ribs on H-beam columns and H-beam beams; opens bolt holes on the flanges of H-beam beams and H-beam columns; processes H-beam herringbone diagonal supports, and welds the connecting end steel plates at the intersection area at their upper ends.

[0050] Step 2: Processing the mild steel plate. The mild steel plate is sealed before and after cutting and forming; the dog-bone hole is punched out on the mild steel plate base material by stamping technology to form a dog-bone hole mild steel plate; the dog-bone hole mild steel plate is welded with a rectangular thin mild steel plate of the same peripheral size to form a skinned dog-bone hole mild steel plate.

[0051] Step 3: Prepare the steel components of the energy dissipation and shock absorption device. First, weld the bending parallel dog bone hole soft steel plate at the corresponding positions of the upper connecting belt circular hole steel plate and the lower connecting plate, then weld the left and right sides of the skin dog bone hole soft steel plate, and then weld the front and rear blocking soft steel plates and weld the front and rear blocking soft steel plates to the left and right sides of the skin dog bone hole soft steel plates.

[0052] Step 4: Prepare a high-ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending. The high-ductility mortar is poured into the cavity between the soft steel plates with dog-bone holes through the pouring circular holes on the upper connecting plate. The high-ductility mortar flows through the soft steel plates with parallel dog-bone holes. After curing, the high-ductility mortar forms a high-ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending.

[0053] 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 to the foundation; then use high-strength bolts to connect the end plate of the H-shaped steel beam to the H-shaped steel column.

[0054] Step 6: Assemble the H-shaped steel herringbone support. Use high-strength bolts to connect the two support bottom connection end plates of the components welded with the end steel plates at the intersection area of ​​the upper end of the H-shaped steel herringbone support to the upper flange of the lower H-shaped steel beam.

[0055] Step 7: Assemble the bending parallel dog bone hole soft steel plate to the high ductility mortar energy dissipation and shock absorption device. Use high-strength bolts to connect the upper connection steel plate with round holes of the energy dissipation and shock absorption device to the bolt hole of the lower flange of the H-shaped steel beam, and then use high-strength bolts to connect the lower connection steel plate of the energy dissipation and shock absorption device to the upper connection end plate bolt hole welded in the upper end area of ​​the H-shaped steel herringbone support. Example

[0056] Firstly, according to the structural layout of the building design, the layout position and specific size of the H-shaped steel beams and H-shaped steel columns of the steel frame are determined; combined with the design of the steel frame, the H-shaped steel herringbone supports and the connecting end steel plates welded in the intersection area of ​​the upper ends of the supports are designed to match; according to the design requirements of multiple seismic defense lines, a flexible steel plate laminated with rubber energy dissipation and shock absorption device with parallel dog-bone holes is designed.

[0057] The construction process of a high-ductility mortar energy dissipation and shock absorption device for a steel frame-support structure with parallel dog-bone holes is as follows: S1 factory prepares steel frame H-shaped steel beams, H-shaped steel columns, H-shaped steel herringbone supports and matching assembly parts; S2 factory cuts, punches, and welds to make left and right side skin dog-bone hole soft steel plates, front and rear blocking soft steel plates, and punches and processes dog-bone hole soft steel plates; S3 factory processes other steel components of the energy dissipation and shock absorption device; S4 connects the round holes on the upper After welding the bending parallel dog-bone hole soft steel plates at the corresponding positions of the steel plate and the lower connecting steel plate, weld the left and right sides of the soft steel plates for blocking the skin dog-bone holes, then weld the front and rear blocking soft steel plates, and finally weld the left and right sides of the soft steel plates for blocking the skin dog-bone holes and the front and rear blocking soft steel plates together; S5 prepares high ductility mortar, and pours the high ductility mortar into the cavity of the steel component of the energy dissipation and shock absorption device, and after the high ductility mortar is cured, a high ductility mortar energy dissipation and shock absorption device of the bending parallel dog-bone hole soft steel plate is formed.

[0058] High-strength bolts are used to assemble the steel frame on site, the H-shaped steel herringbone support upper area is welded to connect the end steel plate components, and the bending parallel dog-bone hole soft steel plate high-ductility mortar energy dissipation and shock absorption device is assembled.

[0059] 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 shock absorption device for a mild steel plate with parallel dog bone holes under bending, characterized in that: The invention comprises a steel frame-support structure (1), and a high-ductility energy dissipation and shock absorption structure (6) of a mild steel plate with parallel dog-bone holes in bending, which is arranged in the steel frame-support structure (1); the high-ductility energy dissipation and shock absorption structure (6) of a mild steel plate with parallel dog-bone holes in bending is arranged in sequence along the middle of the steel frame-support structure (1); the high-ductility energy dissipation and shock absorption structure (6) of a mild steel plate with parallel dog-bone holes in bending comprises a multi-cavity steel component formed by welding an upper connecting steel plate with round holes (7), a lower connecting steel plate (8), a mild steel plate with dog-bone holes for sealing the skin (9), a mild steel plate with parallel dog-bone holes in bending (10), and a mild steel plate with blocking the dog-bone holes (11), and a high-ductility mortar (12) poured into the cavity of the multi-cavity steel component.

2. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: In the steel frame-support structure (1), the steel frame H-shaped steel column (2) and the upper and lower steel frame H-shaped steel beams (3) are respectively connected by high-strength bolts (13) to form a steel frame; the bottom area of ​​the H-shaped steel herringbone support (4) is welded to the end steel plate component and connected to the upper flange of the lower steel frame H-shaped steel beam (3) by high-strength bolts (13); the steel frame H-shaped steel column (2) and the steel frame H-shaped steel beam (3) are welded or rolled H-shaped steel; the bottom of the steel frame H-shaped steel column (2) is welded to the bottom plate and the stiffening rib, and the bottom plate is connected to the screw rod embedded in the foundation to form the steel frame column foot; the end of the frame H-shaped steel beam (3) is welded with a rectangular end plate, and the rectangular end plate is provided with bolt holes, and the bolt holes on the rectangular end plate are connected to the steel frame The bolt holes on the steel frame H-shaped steel column (2) correspond to each other, and are connected by high-strength bolts (13); the thickness of the rectangular end plate welded at the end of the steel frame H-shaped steel beam (3) is not less than the thickness of the flange of the steel frame H-shaped steel column (2); stiffening ribs are welded on both sides of the web of the H-shaped steel column (2) in the steel frame beam-column node 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-shaped steel beam (3); stiffening ribs are welded on both sides of the web of the H-shaped steel beam at both ends of the connection area between the upper connecting steel plate with circular holes (7) and the lower flange of the steel frame H-shaped steel beam (3), and the thickness of the stiffening ribs is not less than the thickness of the web of the H-shaped steel beam; the H-shaped steel herringbone support (4) is a symmetrically arranged oblique H-shaped steel, and the upper end intersection area of ​​the H-shaped steel herringbone support (4) is welded with a connecting end steel plate (5); The connecting end steel plate (5) welded at the upper intersection area of ​​the H-shaped steel herringbone support (4) and the lower connecting steel plate (8) are connected by high-strength bolts (13); the horizontal angle between the H-shaped steel herringbone support (4) and the steel frame H-shaped steel beam (3) is 45° to 60°.

3. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: In the bending parallel dog-bone hole mild steel plate high ductility energy dissipation and shock absorption structure (6), a plurality of the bending parallel dog-bone hole mild steel plates (10) are arranged vertically in parallel, and the upper and lower ends are respectively welded to the upper connecting belt circular hole steel plate (7) and the lower connecting steel plate (8), and the left and right sides are respectively welded to the sealing mild 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 mild steel plate (9); the upper connecting belt circular hole steel plate (7) is provided with a reserved circular hole, and high ductility mortar (12) is poured into the cavity of the multi-cavity steel component between the welded bending parallel dog-bone hole mild steel plates (10), and after curing, the high ductility mortar (12) is integrally formed with the multi-cavity steel component to form a bending parallel dog-bone hole mild steel plate high ductility mortar energy dissipation and shock absorption device (6).

4. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: The upper connecting steel plate with round holes (7) is provided with a rectangular steel plate with reserved round holes and bolt holes, the thickness of which is not less than the thickness of the flange of the steel frame H-shaped steel beam (3), and the positions of the bolt holes provided thereon correspond to the positions of the bolt holes on the lower flange of the steel frame H-shaped steel beam (3); the upper connecting steel plate with round holes (7) is provided with a reserved round hole in the upper part of each cavity formed by the bending parallel dog bone hole soft steel plate (10), the reserved round hole is a ductile mortar pouring hole, the diameter of the high ductility mortar pouring hole is not less than 20 mm, and the width of the upper connecting steel plate with round holes (7) is not greater than the width of the flange of the steel frame H-shaped steel beam (3).

5. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: The lower connecting steel plate (8) is a rectangular steel plate with connecting bolt holes at the bottom of the bending parallel dog bone hole soft steel plate high ductility energy dissipation and shock absorption structure (6), and its size is consistent with that of the upper connecting steel plate with round holes (7).

6. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: The soft steel plate (9) for sealing the dogbone holes in the skin is a rectangular soft thin steel plate with the same peripheral dimensions as the soft steel plate (10) with dogbone holes in parallel to the bending. The outer side of the rectangular soft thin steel plate is covered with the skin and then welded to the left and right ends of the upper connecting steel plate with round holes (7) and the lower connecting steel plate (8).

7. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes subjected to bending according to claim 1 is characterized in that: The bending parallel dog-bone hole mild steel plate (10) is a group of parallel cross-section mild steel plates with dog-bone holes and nearly equal strength bending yield deformation. The mild steel plates with dog-bone holes are formed by punching out a series of polygonal holes in a dog-bone-type segmentation from a rectangular mild steel plate. The thickness of the mild steel plates with dog-bone holes is determined according to the stress and energy consumption requirements. Under the action of a large earthquake, the bending parallel dog-bone hole mild steel plates (10) welded between the upper and lower connecting steel plates have nearly equal strength bending yield deformation in their cross-sections to consume earthquake energy.

8. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog-bone holes subjected to bending according to claim 1 is characterized in that: The front and rear blocking mild steel plates (11) are rectangular mild steel plates, and form a plurality of cavities between the mild steel plates (9) for blocking the skin dogbone holes and the mild steel plates (10) for bending parallel dogbone holes. The front and rear blocking mild steel plates (11) are mainly shear-deformed, and play a role of large shear stiffness under small or medium earthquakes to effectively control inter-layer displacement, and consume seismic energy through buckling deformation under large earthquakes.

9. The high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog-bone holes subjected to bending according to claim 1 is characterized in that: The high-ductility mortar (12) is poured into the cavity between the dog-bone hole mild steel plates of the energy dissipation and shock absorption device to flow and connect the adjacent dog-bone hole mild steel plates (10), the skin dog-bone hole mild steel plates (9), and the front and rear blocking mild steel plates (11). After curing, the high-ductility mortar (12) forms a mild steel plate-high-ductility mortar combination structure; The soft steel plates (9) for sealing the dogbone holes in the skin, the soft steel plates (10) for bending the parallel dogbone holes, and the front and rear soft steel plates (11) are made of Q235 steel; the steel frame-support structure (1), the connecting end steel plates (5) welded in the upper end area of ​​the H-shaped steel herringbone support, the upper connecting steel plates with round holes (7), and the lower connecting steel plates (8) are all made of Q345B steel; the high-ductility mortar (12) uses fiber high-performance mortar with a strength grade of 40MPa-80MPa; and the strength grade of the high-strength bolts (13) is not less than S8.8 grade.

10. A method for realizing the high ductility mortar energy dissipation and shock absorption device of a mild steel plate with parallel dog bone holes as claimed in any one of claims 1 to 9, characterized in that: The specific steps are as follows: Step 1: Prepare steel frame-support structure steel components, including steel frame H-shaped steel beams, steel frame H-shaped steel columns, and H-shaped steel herringbone supports; the factory produces and processes steel frame H-shaped steel columns, steel frame H-shaped steel beams, end plates with bolt holes, stiffening ribs, and cover plates; weld bottom plates and steel cover plates with bolt holes at the bottom and top of steel frame H-shaped steel columns respectively; weld end plates with bolt holes at the ends of steel frame H-shaped steel beams; weld stiffening ribs on steel frame H-shaped steel columns and steel frame H-shaped steel beams; open bolt holes on the flanges of steel frame H-shaped steel beams and steel frame H-shaped steel columns; process H-shaped steel herringbone oblique supports, and weld connecting end steel plates at the intersection area at their upper ends; Step 2: Processing the mild steel plate; sealing the mild steel plate before and after cutting and forming; punching dog-bone holes on the mild steel plate base material using a stamping process to form a dog-bone hole mild steel plate; welding the dog-bone hole mild steel plate with rectangular thin mild steel plates of equal peripheral dimensions to form a skinned dog-bone hole mild steel plate; Step 3: Prepare the steel components of the energy dissipation and shock absorption device; first weld the bending parallel dog bone hole soft steel plate at the corresponding positions of the upper connecting belt circular hole steel plate and the lower connecting plate, then weld the left and right sides of the soft steel plates for blocking the skin dog bone holes, then weld the front and rear blocking soft steel plates and weld the front and rear blocking soft steel plates to the left and right sides of the soft steel plates for blocking the skin dog bone holes; Step 4: prepare a high ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending; pour the high ductility mortar into the cavity between the soft steel plates with dog-bone holes through the pouring circular holes on the upper connecting plate, the high ductility mortar flows through the soft steel plates with parallel dog-bone holes, and after curing, the high ductility mortar forms a high ductility mortar energy dissipation and shock absorption device for a soft steel plate with parallel dog-bone holes under bending; Step 5: Assemble the steel frame; use high-strength bolts to connect and fix the bottom connection 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; Step 6: Assemble the H-shaped steel herringbone support; use high-strength bolts to connect the two support bottom connection end plates of the components of the H-shaped steel herringbone support upper intersection area with the upper flange of the H-shaped steel beam of the lower steel frame; Step 7: Assemble the bending parallel dog bone hole soft steel plate to the high ductility mortar energy dissipation and shock absorption device; use high-strength bolts to connect the upper connecting steel plate with round holes of the energy dissipation and shock absorption device to the bolt hole of the lower flange of the H-shaped steel beam of the steel frame, and then use high-strength bolts to connect the lower connecting steel plate of the energy dissipation and shock absorption device to the bolt hole of the upper connecting end plate welded in the upper end area of ​​the H-shaped steel herringbone support.

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