High-ductility mortar energy dissipation and shock absorption device for sheared parallel round hole mild steel plate and manufacturing method of high-ductility mortar energy dissipation and shock absorption device

Abstract

The invention discloses a shear parallel round hole mild steel plate high-ductility mortar energy dissipation and shock absorption device and a manufacturing method. The device is composed of an upper connecting steel plate with round holes, a lower connecting steel plate, a lower connecting steel plate, a lower connecting steel plate, a lower 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 soft steel plates are welded between the upper connecting steel plate and the lower connecting steel plate and used for blocking skin dog bone holes on the left side and the right side, the sheared parallel round hole soft steel plate, the front blocking soft steel plate and the rear blocking soft steel plate, the high-ductility mortar is poured into a cavity between the soft steel plates, and the upper connecting steel plate and the lower connecting steel plate are connected with the steel frame-supporting structure through the high-strength bolt system. Under the action of a strong earthquake, the front and rear plugging mild steel plates-the sheared round hole parallel mild steel plates-the high-ductility mortar cooperate to resist earthquake, and after the high-ductility mortar is damaged and consumes more earthquake energy, the front and rear plugging mild steel plates-the sheared round hole parallel mild steel plates shear, bend and deform to consume the earthquake energy, so that the energy dissipation and shock absorption effects of the device can be effectively improved; and two anti-seismic defensive lines are provided.

Description

Technical Field

[0001] The invention relates to a high-ductility mortar energy dissipation and shock absorption device for a shear-bearing parallel circular hole mild steel plate of a steel frame-supporting structure and a manufacturing method thereof, belonging 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 shear parallel circular hole soft steel plate laminated rubber energy dissipation and shock absorption device and method for steel frame-support structure, belonging 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-shaped steel frame beam, a lower connecting steel plate connected to the welded connecting 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, a left and right side sealing skin dog bone hole soft steel plate welded between the upper and lower connecting steel plates, a front and rear sealing soft steel plate welded between the upper and lower connecting steel plates, vulcanized rubber injected through the circular holes at the cavity position 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 with the steel frame-support structure. Under the action of small or moderate earthquakes, the front and rear blocking soft steel plates and the shear parallel circular hole soft steel plates of this energy dissipation and shock absorption device can give full play to the large shear stiffness and effectively control the inter-story displacement angle; under the action of large earthquakes, the front and rear blocking soft steel plates and the middle shear parallel circular hole soft steel plates of this energy dissipation and shock absorption device consume seismic energy through shear plastic deformation, and the rubber and soft steel plates running through the middle shear parallel circular hole soft steel plates cooperate in shear deformation and provide restoring force, which can effectively improve the energy dissipation and shock absorption effect of the energy dissipation and shock absorption device and its easy repairability after a large earthquake.

[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: Energy dissipation and shock absorption device assembled between a steel frame and a herringbone steel support, which has both circular hole soft steel plate and high ductility mortar to coordinate shear deformation energy dissipation and shock absorption, and its manufacturing method. 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 shear-bearing parallel circular hole soft steel plate of a steel frame-support structure and a method thereof: The high-ductility mortar energy dissipation and shock absorption device for shear-bearing parallel circular hole mild steel plates 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 connected to the welded connecting end steel plate in the intersection area of ​​the H-shaped steel herringbone support, left and right side soft steel plates for sealing skin dog bone holes welded between the upper and lower connecting steel plates, shear-bearing parallel circular 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 into the cavity between the mild 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 with the steel frame-support structure.

[0007] The round hole mild steel plate is a mild steel plate with distributed round holes punched out from a rectangular mild steel plate.

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

[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 soft steel plates for blocking the dog-bone holes of the skin. They form a multi-cavity structure with the shear parallel circular hole mild steel plates and the left and right soft steel plates for blocking the dog-bone holes of the skin.

[0011] The high ductility mortar is poured into the shear parallel circular hole mild steel plate, the left and right side sealing skin dog bone hole mild steel plates, and the interior of the cavity between the front and rear sealing mild steel plates, and flows through the circular holes on the circular hole mild steel plates to form a mild steel-high ductility mortar combination structure after the high ductility mortar is cured.

[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 solution: A high-ductility mortar energy dissipation and shock absorption device of a shear-bearing parallel circular hole mild steel plate connected and 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 bending parallel dog-bone hole mild steel plate arranged in the steel frame-support structure 1; the high-ductility energy dissipation and shock absorption structure 6 of a bending parallel dog-bone hole mild steel plate 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 bending parallel dog-bone hole mild steel plate comprises a multi-cavity steel component formed by welding an upper connecting belt circular hole steel plate 7, a lower connecting steel plate 8, a sealing skin dog-bone hole mild steel plate 9, a shear-bearing parallel circular hole mild steel plate 10, and a sealing mild steel plate 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 connected by high-strength bolts 13 to form a steel frame, and the upper end area of ​​the H-shaped steel herringbone support 4 is welded to the end steel plate component and the upper flange of the lower steel frame H-shaped steel beam 3 is connected 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 columns 2 are welded to the bottom plate and the stiffening ribs, and the bottom plate is connected to the pre-buried screws 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 positions of 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 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 of steel frame 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 H-shaped steel beam 3 of the steel frame; stiffening ribs are welded on both sides of the web of 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 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 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 shear parallel circular hole mild steel plate high ductility mortar energy dissipation and shock absorption structure 6, a plurality of the shear parallel circular hole mild steel plates 10 are vertically arranged 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 block the mild steel plates 11 to form a multi-cavity steel component; the outer side of the multi-cavity steel component is a soft steel plate 9 for blocking the dog bone holes of the skin; the upper connecting belt circular hole steel plate 7 is provided with a reserved circular hole, and the high ductility mortar 12 is poured into the cavity of the multi-cavity steel component between the welded shear parallel circular hole mild steel plates 10, and the high ductility mortar is cured to form a soft steel plate-high ductility mortar combination structure.

[0016] Furthermore, the upper connecting steel plate with round holes 7 is a rectangular steel plate with holes for pouring high-ductility mortar and bolt holes, and 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 high-ductility mortar pouring hole in the upper part of each cavity formed by the shear-bearing parallel round 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.

[0017] Furthermore, the lower connecting steel plate 8 is a rectangular steel plate with connecting bolt holes at the bottom of the shear parallel circular hole soft steel plate with higher ductility mortar energy dissipation and shock absorption device 6, and its size is consistent with the upper connecting steel plate with circular 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 size as the dog-bone hole soft steel plate. 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 shear parallel circular hole mild steel plate 10 is a group of parallel circular hole mild steel plates that are deformed by shear yielding. The circular hole mild steel plates are formed by punching out a series of circular shapes from rectangular mild steel plates. The thickness of the circular hole mild steel plates is determined according to the force and energy consumption requirements. Under the action of a large earthquake, the shear parallel circular hole mild steel plates 10 welded between the upper and lower connecting steel plates shear yield and deform to consume earthquake 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 left and right side blocking skin dog bone hole mild steel plates 9 and the shear parallel circular hole mild steel plates 10. The front and rear blocking mild steel plates 11 are mainly shear deformed, 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.

[0021] Furthermore, the high ductility mortar 12 is poured into the shear parallel circular hole mild steel plates, the left and right side sealing skin dog bone hole mild steel plates, and the interior of the cavity between the front and rear sealing mild steel plates, and flows through the circular holes on the circular hole mild steel plates, forming a mild steel-high ductility mortar combination structure after the high ductility mortar is cured.

[0022] Furthermore, the high-strength bolts 13 are used for the following connections: the formed connection of the 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 at 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 shear parallel circular hole soft steel plate high ductility mortar 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 shear parallel circular hole soft steel plate high ductility mortar energy dissipation and shock absorption structure 6 is connected to the connecting end steel plate 5 welded at the intersection area of ​​the upper end of the H-shaped steel herringbone support 4 by high-strength bolts 13.

[0023] Material characteristics: The left and right sides of the soft steel plates 9 for sealing the dogbone holes in the skin, the shear parallel round hole soft steel plates 10, and the front and rear blocking 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 belt round hole steel plate 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 shear-bearing parallel circular hole mild steel plate for a steel frame-support structure and a method thereof, and the specific method thereof 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 the H-beam columns respectively; weld end plates with bolt holes at the ends of the 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-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 circular holes are punched out on the mild steel plate base material by stamping technology to form a circular hole mild steel plate; the dog bone hole is punched out on the mild steel plate base material by stamping technology, and then a rectangular thin mild steel plate of the same peripheral size is attached to the dog bone hole mild steel plate for welding 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 shear parallel circular 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 plate for blocking the skin dog bone hole, 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 soft steel plate for blocking the skin dog bone hole.

[0027] Step 4: Prepare a high-ductility mortar energy dissipation and shock absorption device for a mild steel plate with parallel circular holes under shear. Pour high-ductility mortar into the multiple cavities between the mild steel plates through the reserved circular holes on the upper connecting plate, and after curing, form a high-ductility mortar energy dissipation and shock absorption device for a mild steel plate with parallel circular holes under shear.

[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 of the steel frame.

[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 high ductility mortar energy dissipation and shock absorption device with parallel circular holes of shear soft steel plate. Use high-strength bolts to connect the upper connecting steel plate with circular holes of the energy dissipation and shock absorption device to the bolt holes 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 holes of the upper connecting end steel plate 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 shear-bearing parallel circular hole mild steel plate for steel frame-support structure, which has the following advantages: 1. The high-ductility mortar energy dissipation and shock absorption device of the shear-bearing parallel circular hole mild steel plate of the present invention has a simple structure, is easy to prepare and assemble. The mild steel used in the energy dissipation and shock absorption device of the present invention is a common steel material in current building structures. The punching process in the preparation of the circular hole mild steel plate is a mature process for steel forming at present, and it has strong feasibility. The high-ductility mortar poured inside the cavity between the steel plates of the energy dissipation and shock absorption device has stable performance, mature preparation technology and low price. It overcomes the disadvantages of unstable damping force, high temperature sensitivity and easy damage to seals caused by aging of the medium of viscous dampers, viscoelastic dampers and lead viscoelastic dampers.

[0032] 2. Compared with the traditional mild steel damper, the high-ductility mortar energy dissipation and shock absorption device of the shear parallel circular hole mild steel plate of the present invention can realize the performance design of the energy dissipation and shock absorption device according to the seismic requirements of the structure.

[0033] 3. The high-ductility mortar energy dissipation and shock absorption device of the shear-parallel circular hole mild steel plate of the present invention has the characteristics of two lines of defense. The front and rear sealing mild steel plates-shear parallel circular hole mild steel plates-high-ductility mortar combined structure welded between the upper and lower connecting steel plates has large lateral force stiffness and can effectively control interlayer displacement, which is the first line of seismic defense; the high-ductility mortar first cracks, yields, and is destroyed, and after consuming more seismic energy, the front and rear sealing mild steel plates-shear parallel circular hole mild steel plates shear yield deformation energy dissipation and shock absorption, which is the second line of seismic defense. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a steel frame-support structure and a high-ductility mortar energy dissipation and shock absorption device connected to the shear parallel circular hole soft steel plate with high-strength bolts. (a) Steel frame-support structure; (b) Steel frame-support structure-energy dissipation and shock absorption device system.

[0035] Figure 2 It is a high ductility mortar energy dissipation and shock absorption device structure of a shear parallel circular hole mild steel plate.

[0036] Figure 3 It 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 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 shear parallel circular hole mild steel plate assembled with high-strength bolts of a steel frame-support structure; 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; the high-ductility mortar energy dissipation and shock absorption structure 6 of a shear parallel circular hole mild steel plate is composed of: an upper connecting belt circular hole steel plate 7, a lower connecting steel plate 8, left and right side blocking skin dog bone hole mild steel plates 9, shear parallel circular hole mild steel plates 10, front and rear blocking mild 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 shear parallel circular hole mild steel plate laminated rubber energy dissipation and shock absorption device.

[0039] 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, and the upper end area of ​​the H-shaped steel herringbone support 4 is welded to the end steel plate component and the upper flange of the lower steel frame H-shaped steel beam 3 is connected 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 columns 2 are welded to the bottom plate and the stiffening ribs, and the bottom plate is connected to the pre-buried screws 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 by 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 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 of steel frame 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 H-shaped steel beam 3 of the steel frame; stiffening ribs are welded on both sides of the web of 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 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 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°.

[0040] In the shear parallel circular hole mild steel plate high ductility mortar energy dissipation and shock absorption structure 6, a plurality of the shear parallel circular 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 soft steel plates 11 to form a multi-cavity steel component; the outer side of the multi-cavity steel component is a soft steel plate 9 for sealing the dog-bone holes of the skin; the upper connecting belt circular hole steel plate 7 is provided with a reserved circular hole, and the 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 the high ductility mortar is cured to form a soft steel plate-high ductility mortar combination structure.

[0041] The upper connecting steel plate with round holes 7 is a rectangular steel plate with holes for pouring high-ductility mortar 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 on it 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 high-ductility mortar pouring hole in the upper part of each cavity formed by the shear parallel round hole soft steel plate 10. The diameter of the high-ductility mortar pouring hole is not less than 20 mm. 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 shear parallel round hole soft steel plate with higher ductility mortar energy dissipation and shock absorption device 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 of the skin are rectangular soft thin steel plates with the same peripheral dimensions as the dogbone hole soft steel plates. The outer sides of the rectangular soft thin steel plates are covered with skin and then welded to the left and right ends of the upper connecting belt round hole steel plate 7 and the lower connecting steel plate 8.

[0044] The shear parallel circular hole mild steel plate 10 is a group of parallel circular hole mild steel plates that are deformed by shear yielding. The circular hole mild steel plates are formed by punching out a series of circular shapes from a rectangular mild steel plate. The thickness of the circular hole mild steel plate is determined according to the force and energy consumption requirements. Under the action of a large earthquake, the shear parallel circular hole mild steel plates 10 welded between the upper and lower connecting steel plates shear yield and deform to consume earthquake energy.

[0045] The front and rear blocking mild steel plates 11 are rectangular mild steel plates, and form a number of cavities with the left and right side blocking skin dog bone hole mild steel plates 9 and the shear parallel circular 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 poured into the shear parallel circular hole mild steel plates, the left and right sides of the skin dog bone hole mild steel plates, and the interior of the cavity between the front and rear blocking mild steel plates, and flows through the circular holes on the circular hole mild steel plates to form a mild steel-high ductility mortar combination structure after the high ductility mortar is cured.

[0047] The high-strength bolts 13 are used for the following connections: the formed connection of the 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 at 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 shear parallel circular hole soft steel plate high ductility mortar 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 shear parallel circular hole soft steel plate high ductility mortar energy dissipation and shock absorption structure 6 is connected to the connecting end steel plate 5 welded at the intersection area of ​​the upper end of the H-shaped steel herringbone support 4 by high-strength bolts 13.

[0048] Material characteristics: The left and right sides of the soft steel plates 9 for sealing the dogbone holes in the skin, the shear parallel round hole soft steel plates 10, and the front and rear blocking 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 belt round hole steel plate 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.

[0049] The present invention relates to a high-ductility mortar energy dissipation and shock absorption device for a shear-bearing parallel circular hole mild steel plate for a steel frame-support structure and a method thereof, and the specific method thereof 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 the H-beam columns respectively; weld end plates with bolt holes at the ends of the 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-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.

[0050] Step 2: Processing the mild steel plate. The mild steel plate is sealed before and after cutting and forming; the circular holes are punched out on the mild steel plate base material by stamping technology to form a circular hole mild steel plate; the dog bone hole is punched out on the mild steel plate base material by stamping technology, and then a rectangular thin mild steel plate of the same peripheral size is attached to the dog bone hole mild steel plate for welding 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 shear parallel circular 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 plate for blocking the skin dog bone hole, 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 soft steel plate for blocking the skin dog bone hole.

[0052] Step 4: Prepare a high-ductility mortar energy dissipation and shock absorption device for a mild steel plate with parallel circular holes under shear. Pour high-ductility mortar into the multiple cavities between the mild steel plates through the reserved circular holes on the upper connecting plate, and after curing, form a high-ductility mortar energy dissipation and shock absorption device for a mild steel plate with parallel circular holes under shear.

[0053] 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 of the steel frame.

[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 H-shaped steel beam of the lower steel frame.

[0055] Step 7: Assemble the high ductility mortar energy dissipation and shock absorption device with parallel circular holes of shear soft steel plate. Use high-strength bolts to connect the upper connecting steel plate with circular holes of the energy dissipation and shock absorption device to the bolt holes 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 holes of the upper connecting end steel plate welded in the upper end area of ​​the H-shaped steel herringbone support. Example

[0056] First, 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 high-ductility mortar energy dissipation and shock-absorbing device with shear-resistant parallel circular hole soft steel plates is designed.

[0057] The construction process of a high-ductility mortar energy dissipation and shock absorption device of a shear-bearing parallel circular hole mild steel plate for a steel frame-support structure 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 produce left and right side blocking skin dog-bone hole mild steel plates, front and rear blocking mild steel plates, and punches and processes circular hole mild steel plates; S3 factory processes other steel components of the energy dissipation and shock absorption device; S4 welds shear-bearing parallel circular hole mild steel plates at corresponding positions of the upper connecting belt circular hole steel plate and the lower connecting steel plate, welds the left and right side blocking skin dog-bone hole mild steel plates, then welds the front and rear blocking mild steel plates, and finally welds the left and right side blocking skin dog-bone hole mild steel plates and the front and rear blocking mild steel plates together; S5 prepares high-ductility mortar, pours the high-ductility mortar into the cavity of the steel component of the energy dissipation and shock absorption device, and forms a high-ductility mortar energy dissipation and shock absorption device of a shear-bearing parallel circular hole mild steel plate after curing the high-ductility mortar.

[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 shear-bearing parallel circular hole soft steel plate laminated rubber 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 circular holes under shear, 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, which comprises a multi-cavity steel component formed by welding an upper connecting belt circular hole steel plate (7), a lower connecting steel plate (8), a sealing skin dog-bone hole mild steel plate (9), a shearing parallel circular hole mild steel plate (10), and a sealing mild steel plate (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 vibration reduction device of a mild steel plate with parallel circular holes subjected to shear 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 connected by high-strength bolts (13) to form a steel frame; the upper end area of ​​the H-shaped steel herringbone support (4) is welded to the end steel plate component and the upper flange of the lower steel frame H-shaped steel beam (3) is connected 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 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 positions of the bolt holes on the steel frame H-shaped steel column (2) and are connected by high-strength bolts; the rectangular end plate welded at the end of the steel frame H-shaped steel beam (3) is welded with a rectangular end plate, and the rectangular end plate is provided with bolt holes. The positions of 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; The thickness of the end plate 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 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 beam web; the H-shaped steel herringbone support (4) is a symmetrically arranged oblique H-shaped steel, and the upper 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 in 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°~60°.

3. The high ductility mortar energy dissipation and shock absorption device of a shear parallel circular hole mild steel plate according to claim 1 is characterized in that: In the shear-bearing parallel circular hole mild steel plate high-ductility mortar energy dissipation and shock absorption structure (6), a plurality of the shear-bearing parallel circular 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 the high-ductility mortar (12) is poured into the cavity of the multi-cavity steel component between the welded shear-bearing parallel circular hole mild steel plates (10), and after the high-ductility mortar is cured, a mild steel plate-high-ductility mortar combination structure is formed.

4. The high ductility mortar energy dissipation and vibration reduction device of a mild steel plate with parallel circular holes subjected to shear according to claim 1 is characterized in that: The upper connecting steel plate with round holes (7) is a rectangular steel plate with holes for pouring high-ductility mortar and bolt holes, and 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 on it 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 high-ductility mortar pouring hole opened in the upper part of each cavity formed by the shear parallel round hole soft steel plate (10). The diameter of the high-ductility mortar pouring hole is not less than 20 mm. 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 vibration reduction device of a mild steel plate with parallel circular holes under shear 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 shear parallel circular hole soft steel plate higher ductility mortar energy dissipation and shock absorption device (6), and its size is consistent with that of the upper connecting steel plate with circular holes (7).

6. The high ductility mortar energy dissipation and vibration reduction device of a shear parallel circular hole mild steel plate according to claim 1 is characterized in that: The soft steel plate (9) for sealing the dogbone hole of the skin is a rectangular soft thin steel plate with the same peripheral size as the dogbone hole soft steel plate. 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 vibration reduction device of a shear parallel circular hole mild steel plate according to claim 1 is characterized in that: The shear-bearing parallel circular hole mild steel plates (10) are a group of parallel circular hole mild steel plates that are subjected to shear yield deformation. The circular hole mild steel plates are formed by punching out a series of circular shapes from rectangular mild steel plates. The thickness of the circular hole mild steel plates is determined according to the stress and energy consumption requirements. Under the action of a large earthquake, the shear-bearing parallel circular hole mild steel plates (10) welded between the upper and lower connecting steel plates are subjected to shear yield deformation to consume earthquake energy.

8. The high ductility mortar energy dissipation and vibration reduction device of a mild steel plate with parallel circular holes subjected to shear 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 left and right side blocking skin dog bone hole mild steel plates (9) and the shear parallel circular hole mild steel plates (10); 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 vibration reduction device of a mild steel plate with parallel circular holes subjected to shear according to claim 1 is characterized in that: The high ductility mortar (12) is poured into the shear parallel circular hole mild steel plate, the left and right side sealing skin dog bone hole mild steel plates, and the interior of the cavity between the front and rear sealing mild steel plates, and flows through the circular holes on the circular hole mild steel plates, and a mild steel-high ductility mortar combination structure is formed after the high ductility mortar is cured; The left and right side skin dog bone hole blocking mild steel plates (9), the shear parallel circular hole mild steel plates (10), and the front and rear blocking mild 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 belt circular hole steel plate (7), and the lower connecting steel plate (8) are all made of Q345B steel; the high ductility mortar (12) uses fiber high-performance mortar with a strength grade of 40MPa-80MPa; the strength grade of the high-strength bolts (13) is not less than S8.8 grade.

10. A method for realizing a high-ductility mortar energy dissipation and shock absorption device of a shear-bearing parallel circular hole soft steel plate as described in any one of claims 1 to 9, characterized in that: the first step: preparing a steel frame-supporting structure steel member, including a steel frame H-shaped steel beam, a steel frame H-shaped steel column, and an H-shaped steel herringbone support; factory production and processing of the steel frame H-shaped steel column, the steel frame H-shaped steel beam, the end plate with bolt holes, the stiffening rib, and the cover plate; welding a bottom plate and a steel cover plate with bolt holes at the bottom and top of the H-shaped steel column respectively; welding an end plate with bolt holes at the end of the H-shaped steel beam; welding stiffening ribs on the steel frame H-shaped steel column and the steel frame H-shaped steel beam; opening bolt holes on the flanges of the steel frame H-shaped steel beam and the steel frame H-shaped steel column; processing the H-shaped steel herringbone oblique support, and welding the connecting end steel plate at the intersection area at its upper end; Step 2: Processing the mild steel plate; sealing the mild steel plate before and after cutting and forming; punching distributed circular holes on the mild steel plate base material by stamping processing technology to form a circular hole mild steel plate; punching dog bone holes on the mild steel plate base material by stamping processing technology, and then pasting and welding a rectangular thin mild steel plate of the same peripheral size on the dog bone hole mild steel plate 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 shear parallel circular 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 mild steel plate with parallel circular holes under shear; pour the high-ductility mortar into the multiple cavities between the mild steel plates through the reserved circular holes on the upper connecting plate, and form a high-ductility mortar energy dissipation and shock absorption device for a mild steel plate with parallel circular holes under shear after curing the high-ductility mortar; 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 of the steel frame; 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 high-ductility mortar energy dissipation and shock absorption device with parallel circular holes of shear-bearing soft steel plates; use high-strength bolts to connect the upper connecting steel plate with circular holes of the energy dissipation and shock absorption device to the bolt holes 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 holes of the upper connecting end steel plate welded in the upper end area of ​​the H-shaped steel herringbone support.

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