CN114876063A - Buckling constraint system for weakened connecting cover plate - Google Patents
Buckling constraint system for weakened connecting cover plate Download PDFInfo
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- CN114876063A CN114876063A CN202210599011.0A CN202210599011A CN114876063A CN 114876063 A CN114876063 A CN 114876063A CN 202210599011 A CN202210599011 A CN 202210599011A CN 114876063 A CN114876063 A CN 114876063A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2442—Connections with built-in weakness points
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a weakened type connecting cover plate buckling restraint system which comprises a first H-shaped non-yielding steel beam and a second H-shaped non-yielding steel beam, wherein the adjacent end surfaces of the first H-shaped non-yielding steel beam and the second H-shaped non-yielding steel beam are spliced, lower cushion plates are respectively arranged at the splicing parts of an upper flange and a lower flange of the first H-shaped non-yielding steel beam and the second H-shaped non-yielding steel beam, the lower cushion plates are symmetrical relative to a web plate, a left cushion plate and a right cushion plate are respectively arranged at the front side and the rear side of each lower cushion plate, which are close to the lower cushion plates, dog-bone-type flange connecting cover plates are arranged at the outer sides of the lower cushion plates, symmetrical arc-shaped notches are formed at the two sides of the middle parts of the dog-bone-type flange connecting cover plates in the width direction, arc-shaped cushion plates are arranged at the arc-shaped notches, upper cushion plates and upper cushion plates are arranged at the outer sides of the dog-bone-type flange connecting cover plates, the arc-shaped base plate and the lower base plate are fixed together, and two ends of the dog-bone-type flange connecting cover plate are fixed on the H-shaped non-yielding steel beam through the beam left base plate and the beam right base plate respectively. The invention effectively solves the problem of the replaceable performance of part of components in the structure after the earthquake.
Description
Technical Field
The invention belongs to a steel frame structure in the field of constructional engineering, and relates to a weakened type connecting cover plate buckling restraint system.
Background
The steel frame structure has the advantages of stable quality, high production efficiency, light material dead weight, good earthquake resistance, environmental protection and the like, and is beneficial to realizing social sustainable development; but the problems that the joint connection form is single, the on-site welding seam quality is difficult to ensure, the corrosion prevention and fire prevention are difficult to treat and the like are insufficient, and the like become main bottlenecks which restrict the popularization and application of the steel frame structure. Earthquake disasters are always life safety and economic property threats to human beings. For the seven-life line engineering, the maintenance or quick recovery of functions is extremely important for post-disaster rescue and reconstruction and social stability.
The plastic energy consumption of the structure can cause certain parts in the building structure to be damaged under the action of an earthquake, so that the restoration after the earthquake can be greatly influenced, and great loss can be brought to economy and time. And although the design of partial ductile components avoids the collapse of the structure, the components are seriously damaged, and the repair work is very difficult or too costly, and only the components can be dismantled and rebuilt. Under the action of earthquake, the plasticity development of the common steel frame structure is concentrated at the beam end, the welding seam of the beam end is cracked, and the joint connection of the beam column is seriously damaged and has great harm. At present, a plurality of damage concentrated researches and application examples are provided, such as reduced beam section connection, eccentric support energy dissipation beam sections and the like, and a plurality of researches and examples for further considering damage separation are provided. Meanwhile, the existing energy consumption assembly has a large improvement space in the aspects of structural form, energy consumption efficiency and deformability.
In the past research, for the removable connected node that the girder steel flange that will break off and web pass through the rectangle steel sheet and connect at the beam-ends, this kind of connected node can effectively be with damage control on connected steel sheet, and the plastic deformation ability of steel sheet is strong in the node rotation process, and girder steel and steel column all keep elasticity in the experiment, and it is also feasible to change connected steel sheet, and the intensity of removable steel sheet and girder steel flange intensity ratio are great to node anti-seismic performance's influence. Under the action of the beam-end negative bending moment, the connecting steel plate is seriously bent under pressure, so that the hysteresis curve is pinched to reduce the energy consumption capability and have poorer fatigue performance.
Disclosure of Invention
In view of this, the present invention provides a weakened connection cover buckling restraining system with excellent anti-seismic performance.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a apron bucking restraint system is connected to formula that weakens, carry out first H shape non-yield girder steel and the non-yield girder steel of second H shape of concatenation including adjacent terminal surface, the lower bolster has been placed respectively to the upper limb and the lower limb concatenation department of first H shape non-yield girder steel and the non-yield girder steel of second H shape, the lower bolster is symmetrical for the web, both sides are close to the lower bolster around the lower bolster and are provided with roof beam left bolster and roof beam right bolster respectively, dog bone formula edge of a wing connection apron has been placed in the outside of lower bolster, the arc breach that has the symmetry is opened to the both sides of the middle part width direction of dog bone formula edge of a wing connection apron, arc backing plate has been placed to arc breach department, the arc part of arc backing plate is less than the arc breach, the outside of dog bone formula edge of a wing connection apron is provided with the upper padding plate, the both sides of arc backing plate and lower bolster width direction are together fixed, the both ends of the length direction of dog bone formula edge of a wing connection apron are fixed at first H shape non-yield girder steel and roof beam right bolster respectively through roof beam left and roof beam backing plate On the second H-shaped non-yielding steel beam.
Further, the thickness of the beam left base plate is the same as that of the beam right base plate, the thickness of the beam left base plate is larger than that of the lower base plate and that of the upper base plate, the thickness of the arc base plate is larger than that of the dog-bone flange connecting cover plate, and the length of the beam right base plate is smaller than that of the beam left base plate, so that a gap is reserved between the left end face of the beam right base plate and the right end face of the lower base plate.
Furthermore, web connecting cover plates are symmetrically fixed on the outer sides of webs at the splicing positions of the first H-shaped non-yielding steel beam and the second H-shaped non-yielding steel beam.
Further, dog bone formula edge of a wing connection cover plate is a style of calligraphy structure, and the width direction's of dog bone formula edge of a wing connection cover plate both ends flush with the width direction's of roof beam left backing plate and roof beam right backing plate both ends respectively, and the length direction's of dog bone formula edge of a wing connection cover plate both ends flush with the length direction's of roof beam left backing plate and roof beam right backing plate outer end respectively.
Further, the upper and lower backing plates are identical.
Furthermore, at least one group of small bolt holes are respectively reserved on the upper base plate, the lower base plate and the arc base plate, and the small bolt holes are arranged on the same side of the splicing position of the H-shaped non-yielding steel beam.
Furthermore, the lengths of the upper backing plate and the lower backing plate are respectively greater than the length of the arc-shaped part of the dog-bone flange connecting cover plate.
Furthermore, the gap distance between the first H-shaped non-yielding steel beam and the second H-shaped non-yielding steel beam needs to meet the requirement that the two ends of the splicing part cannot be contacted in the rotating process of the first H-shaped non-yielding steel beam and the second H-shaped non-yielding steel beam under the action of an earthquake.
Furthermore, the other end of the first H-shaped non-yielding steel beam is fixed on the vertical steel column.
The invention has the beneficial effects that:
the device can effectively control the damage caused after the earthquake, can transfer the plastic deformation area of the steel beam column node to the dog-bone flange connecting cover plate, thereby playing the role of a fuse, simultaneously, the flange connecting cover plate restraining device is an important condition for enabling the dog-bone flange connecting cover plate weakening section to realize buckling restraint energy consumption, can effectively avoid the dog-bone flange connecting cover plate from generating plastic deformation, fully exerts the energy consumption capability of the node, further avoids the steel beam column node part from generating plastic damage, ensures the fullness of a hysteretic curve, improves the stability of the bending resistance bearing capacity of the connecting section and the stability of the energy consumption capability, and simultaneously has clear form and action mechanism, convenient construction and installation, and can fully exert the excellent energy consumption capability of the dog-bone node.
The weakened connecting cover plate buckling restraining device can effectively ensure that a steel beam and a steel column after an earthquake are still in an elastic stage through reasonable design, and the beam-column joint can be continuously used only by replacing the weakened connecting cover plate buckling restraining device and the web connecting cover plate. The problem of replaceable performance of parts of components in the structure after the earthquake is effectively solved, the structure is enabled to recover the normal use function rapidly, and the repair time and economic loss after the earthquake are reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is an elevation view of the splice node of the present invention;
FIG. 3 is a cross-sectional view at a splice node of the present invention;
FIG. 4 is a schematic structural view of the left bolster of the beam of the present invention;
FIG. 5 is a schematic structural view of the right bolster of the beam of the present invention;
FIG. 6 is a schematic view of the upper and lower backing plates of the present invention;
fig. 7 is a schematic structural view of the arc-shaped backing plate of the invention.
Reference numerals:
1. a high-strength bolt; 2. an upper base plate; 3. a lower base plate; 4. an arc-shaped base plate; 5. the dog-bone type flange is connected with the cover plate; 6. a beam left backing plate; 7. a beam right base plate; 8. the web plate is connected with the cover plate; 9. a first H-shaped non-yielding steel beam; 10. a second H-shaped non-yielding steel beam; 11. a small bolt hole.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and embodiments may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 7, a buckling constraint system for a weakened connecting cover plate includes a first H-shaped unyielding steel beam 9 and a second H-shaped unyielding steel beam 10, wherein adjacent end surfaces of the first H-shaped unyielding steel beam 9 and the second H-shaped unyielding steel beam 10 are spliced, and the other end of the first H-shaped unyielding steel beam 9 is fixed on a vertical steel column.
The web plates of the first H-shaped non-yielding steel beam 9 and the second H-shaped non-yielding steel beam 10 are vertically arranged, the web plate connecting cover plates 8 are symmetrically fixed on the outer sides of the web plates at the splicing positions of the first H-shaped non-yielding steel beam 9 and the second H-shaped non-yielding steel beam 10, and the web plate connecting cover plates 8 are respectively fixed on the web plates of the first H-shaped non-yielding steel beam 9 and the second H-shaped non-yielding steel beam 10 through high-strength bolts 1.
Dog bone formula edge of a wing connection cover plate 5 has been placed in the outside of lower bolster 3, and dog bone formula edge of a wing connection cover plate 5 is a style of calligraphy structure, and the width direction's of dog bone formula edge of a wing connection cover plate 5 both ends flush with the width direction's of roof beam left bolster 6 and roof beam right bolster 7 both ends respectively, and the length direction's of dog bone formula edge of a wing connection cover plate 5 both ends flush with the length direction's of roof beam left bolster 6 and roof beam right bolster 7 outer end respectively.
Symmetrical arc gaps are formed in the two sides of the middle of the dog-bone-type flange connecting cover plate 5 in the width direction, and the arc gaps are weakened portions of the dog-bone-type flange connecting cover plate 5. Arc backing plate 4 has been placed to dog bone formula edge of a wing connection apron 5's arc breach department, and the arc part of arc backing plate 4 is located the arc breach, but the arc part of arc backing plate 4 is less than the arc breach, also is exactly there is the clearance between the arc inner wall of arc part and the arc breach of arc backing plate 4.
The outer side of the dog-bone flange connecting cover plate 5 is provided with an upper padding plate 2, and a plurality of high-strength bolts 1 sequentially penetrate through the two sides of the width direction of the upper padding plate 2, the arc padding plate 4 and the two sides of the width direction of the lower padding plate 3 from top to bottom and then are locked.
The upper 2 and lower 3 pads are identical.
The high-strength bolts 1 sequentially penetrate through the left side of the dog-bone-type flange connecting cover plate 5 and the beam left base plate 6 from top to bottom and are fixed with the corresponding upper flange and lower flange of the first H-shaped non-yielding steel beam 9 respectively, and the high-strength bolts 1 sequentially penetrate through the right side of the dog-bone-type flange connecting cover plate 5 and the beam right base plate 7 from top to bottom and are fixed with the corresponding upper flange and lower flange of the second H-shaped non-yielding steel beam 10 respectively.
The thickness of roof beam left bolster 6 and roof beam right bolster 7 all is greater than the thickness of lower bolster 3, has the gap like this between the lower terminal surface of dog bone formula edge of a wing connection apron 5 and lower bolster 3.
The thickness of the arc-shaped base plate 4 is larger than that of the dog-bone flange connecting cover plate 5, so that a gap exists between the upper base plate 2 and the upper end face of the dog-bone flange connecting cover plate 5.
The length of the beam right base plate 7 is smaller than that of the beam left base plate 6, so that a gap exists between the contact surfaces of the beam right base plate 7 and the lower base plate 3.
These clearances make dog bone formula edge of a wing link apron 5, upper padding plate 2, arc backing plate 4 and lower bolster 3 can produce certain slip under the seismic action for dog bone formula edge of a wing link apron 5 middle part weakens the buckling problem of part and obtains fine solution.
Bending moment in the steel beam section is shared by a pair of couples formed by connecting the dog-bone type flanges at the upper and lower flanges with the cover plate 5 and local bending moment formed by the couples, shearing force in the beam is shared by a web plate and the cover plate 8, bending resistance formed at the joint of the dog-bone type flanges and the cover plate 5 is smaller than that of the H-shaped unyielding steel beam section, and shearing resistance formed by connecting the web plate and the cover plate 8 is also smaller than that of the H-shaped unyielding steel beam section.
The lengths of the upper cushion plate 2 and the lower cushion plate 3 are respectively greater than the length of the weakened part of the dog-bone flange connecting cover plate 5.
Bolt holes are reserved on the flanges and the webs of the first H-shaped non-yielding steel beam 9 and the second H-shaped non-yielding steel beam 10, and bolt holes are reserved at the corresponding positions of the dog-bone flange connecting cover plate 5, the web connecting cover plate 8 and various types of base plates.
The number of the high-strength bolts required by the system meets the requirements of axial force and shearing force of the energy-dissipating transmission assembly.
The gap distance between the first H-shaped non-yielding steel beam 9 and the second H-shaped non-yielding steel beam 10 needs to satisfy the requirement that the two ends of the two sections of H-shaped non-yielding steel beams at the splicing position cannot be contacted in the rotating process of the H-shaped non-yielding steel beam section under the earthquake action.
In the prior art, when structural design is carried out, a part of a beam section, which is easy to generate plastic hinges, can be designed as a weak part, namely, a flange part of a steel beam is weakened to guide the expected plastic hinge-out part to hinge out, a reasonable damage mode is realized by the control structure, and the position of the weakened section is a position which is a certain distance away from a beam column node.
At present, the flange part of a steel beam is not directly weakened, a splicing node mode is adopted, two sections of steel beams are spliced and combined through a dog-bone flange connecting cover plate 5, the weakening degree can be controlled according to the free deformation length and the maximum cutting depth of the middle weakening section of the dog-bone flange connecting cover plate 5, the section of the free deformation length section of the weakening section enables the section to give priority to the free deformation length section and give full play to plasticity, and the net section fracture along a bolt hole cannot occur before the deformation capacity of the section is fully developed.
The rigidity and the yield strength of the materials of the upper backing plate 2, the lower backing plate 3 and the arc backing plate 4 are all larger than those of the dog-bone flange connecting cover plate 5. The upper backing plate 2, the lower backing plate 3 and the arc backing plate 4 can provide plane rigidity so as to improve the overall stability of the H-shaped non-yielding steel beam and improve the ultimate bending moment bearing capacity and the deformation bearing capacity of the dog-bone flange connecting cover plate 5.
The first H-shaped non-yielding steel beam 9 and the steel column are welded.
After the rare water meets the flat ground and shakes, the lower cushion plate 3, the dog-bone-shaped flange connecting cover plate 5, the arc-shaped cushion plate 4, the upper cushion plate 2 and the web connecting cover plate 8 are replaced layer by layer in a replacement sequence from bottom to top. The damage caused by earthquake is only concentrated on the dog-bone flange connecting cover plate 5 and the web connecting cover plate 8, and after replacement operation, the performance of the frame structure can be basically recovered.
The invention has excellent anti-seismic performance, can effectively limit buckling instability of large amplitude which can occur on the plane of a steel beam after the weakened part of the dog-bone flange connecting cover plate 5 is pressed and buckled and when the web connecting cover plate 8 is sheared, can effectively prevent the weakened part from easily buckling, ensures the fullness of a hysteretic curve, improves the stability of the bending resistance bearing capacity and the stability of energy consumption capacity of the connecting section, and fully exerts the excellent energy consumption capacity of the dog-bone node. Meanwhile, the invention can solve the problem of replaceable performance of part of components after the earthquake, so that the structure can quickly recover the normal use function, and the repair time and economic loss after the earthquake are reduced.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a apron bucking restraint system is connected to weakening formula which characterized in that: carry out first H shape non-yield girder steel (9) and second H shape non-yield girder steel (10) that splice including adjacent terminal surface, lower bolster (3) have been placed respectively to the upper limb and the lower flange concatenation department of first H shape non-yield girder steel (9) and second H shape non-yield girder steel (10), lower bolster (3) are symmetrical for the web, both sides are close to lower bolster (3) around lower bolster (3) and are provided with roof beam left bolster (6) and roof beam right bolster (7) respectively, dog bone formula edge of a wing connection apron (5) have been placed in the outside of lower bolster (3), the arc breach that has the symmetry is opened to the both sides of the middle part width direction of dog bone formula edge of a wing connection apron (5), arc backing plate (4) have been placed to arc breach department, the arc part of arc backing plate (4) is less than the arc breach, the outside of dog bone formula edge of a wing connection apron (5) is provided with upper padding plate (2), upper padding plate (2), Arc backing plate (4) and lower bolster (3) width direction's both sides are fixed together, and the length direction's of dog bone formula edge of a wing connection apron (5) both ends are fixed respectively on first H shape non-yield girder steel (9) and second H shape non-yield girder steel (10) through roof beam left bolster (6) and roof beam right bolster (7).
2. The buckling restraint system of claim 1, wherein: the thickness of roof beam left side backing plate (6) and roof beam right side backing plate (7) is the same, and the thickness of roof beam left side backing plate (6) and roof beam right side backing plate (7) is greater than lower bolster (3) and upper padding plate (2), and the thickness of arc backing plate (4) is greater than the thickness that dog bone formula edge of a wing connects apron (5), and the length of roof beam right side backing plate (7) is less than the length of roof beam left side backing plate (6) for leave the clearance between the right-hand member face of the left end face of roof beam right side backing plate (7) and lower bolster (3).
3. The buckling restraint system of claim 1, wherein: and web connecting cover plates (8) are symmetrically fixed on the outer sides of the webs at the splicing part of the first H-shaped non-yielding steel beam (9) and the second H-shaped non-yielding steel beam (10).
4. The buckling restraint system of claim 1, wherein: dog bone formula edge of a wing connection apron (5) are a style of calligraphy structure, and the width direction's of dog bone formula edge of a wing connection apron (5) both ends flush with the width direction's of roof beam left side backing plate (6) and roof beam right side backing plate (7) both ends respectively, and the length direction's of dog bone formula edge of a wing connection apron (5) both ends flush with the length direction's of roof beam left side backing plate (6) and roof beam right side backing plate (7) outer end respectively.
5. The buckling restraint system of claim 1, wherein: the upper backing plate (2) and the lower backing plate (3) are the same.
6. The buckling restraint system of claim 1, wherein: at least one group of small bolt holes (11) are respectively reserved on the upper base plate (2), the lower base plate (3) and the arc base plate (4), and the small bolt holes (11) are arranged on the same side of the splicing position of the H-shaped non-yielding steel beam.
7. The buckling restraint system of claim 1, wherein: the lengths of the upper backing plate (2) and the lower backing plate (3) are respectively greater than the length of the arc-shaped part of the dog-bone flange connecting cover plate (5).
8. The buckling restraint system of claim 1, wherein: the gap distance between the first H-shaped non-yielding steel beam (9) and the second H-shaped non-yielding steel beam (10) needs to meet the requirement that the two ends of the spliced part cannot be contacted in the rotating process of the first H-shaped non-yielding steel beam (9) and the second H-shaped non-yielding steel beam (10) under the action of an earthquake.
9. The buckling restraint system of claim 1, wherein: the other end of the first H-shaped non-yielding steel beam (9) is fixed on the vertical steel column.
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| CN202210599011.0A CN114876063A (en) | 2022-05-30 | 2022-05-30 | Buckling constraint system for weakened connecting cover plate |
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| CN202210599011.0A CN114876063A (en) | 2022-05-30 | 2022-05-30 | Buckling constraint system for weakened connecting cover plate |
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