CN217460961U - Weakening type flange connecting cover plate pressure-bearing device - Google Patents
Weakening type flange connecting cover plate pressure-bearing device Download PDFInfo
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- CN217460961U CN217460961U CN202221330998.8U CN202221330998U CN217460961U CN 217460961 U CN217460961 U CN 217460961U CN 202221330998 U CN202221330998 U CN 202221330998U CN 217460961 U CN217460961 U CN 217460961U
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Abstract
The utility model relates to a formula of weakening edge of a wing joint cover board pressure-bearing device, including a pair of H type non-yield girder steel on same horizontal plane, two H type non-yield girder steels splice, the web of H type non-yield girder steel is vertical, the upper and lower edge of a wing level of H type non-yield girder steel sets up, the outside of one of them H type non-yield girder steel is fixed on vertical steel sheet, on the H type non-yield girder steel, the concatenation department on the edge of a wing at lower both ends is fixed with dog bone formula edge of a wing connection cover board for the web symmetry respectively, the external fixation on dog bone formula edge of a wing connection cover board has edge connection cover board pressure-bearing unit, the front and back both sides difference symmetry of the web concatenation department of H type non-yield girder steel is fixed with web connection cover board. The utility model discloses the installation is simple, makes things convenient for the site operation, and the mechanism of action is clear and definite, can improve the deformation and the power consumption ability of node.
Description
Technical Field
The utility model belongs to the steel frame construction in the building engineering field relates to a weakening formula edge of a wing connection cover plate pressure-bearing device.
Background
The earthquake is a common natural disaster, poses great threat to the life safety and property safety of human beings, and is especially important for deeply researching the earthquake-resistant performance of the steel structure and providing a more reasonable earthquake-resistant mode along with the gradual wide application of the steel structure in the building. Before the earthquake of 94 years of northern mountains and 95 years of Osaka god in the last century, the steel frame is always considered to be a structural form with the advantages of good ductility, light dead weight and the like, until people after the earthquake find that the steel frame does not show good earthquake-resistant performance, the damage form of the steel frame is mainly brittle failure of a node, and the main reason is obtained by deep analysis, namely the quality of a field weld joint is difficult to guarantee, and the stress of the joint of a beam column node is large, so that the connection interface is overlapped with a plastic hinge area. To this end, many innovative nodes have been proposed to avoid this problem, mainly classified as reinforced and weakened nodes.
In recent years, in order to better fit the goal of establishing more recoverable cities after earthquake, a weakened node with a cantilever beam section becomes the main research direction of a steel structure node due to the advantages of easy weak link establishment, replaceable and the like. Firstly, welding a column and a cantilever steel beam section in a factory by the type of node; when the steel beam is transported to the field for assembly, the high-strength bolt and the connecting cover plate are adopted to semi-rigidly connect the column with the cantilever beam section and the steel beam section, so that the quality of a welding seam is ensured, the plastic hinge area is guided to occur at the weakened section, the connecting cover plate is replaced after the earthquake, the use advantage can be recovered, and the construction repair cost is effectively reduced. However, in further research, it is found that the connection cover plate is prone to severe buckling along with the increase of the number of corners and cyclic loads of the node, so that the bearing capacity of the node is rapidly reduced, the hysteresis curve is degraded in rigidity and strength to a certain extent, and the anti-seismic performance of the node is affected.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a be applied to and take weakening formula edge of a wing connection apron pressure-bearing device of cantilever beam section steel frame beam column node, under the effect of reciprocal load, the object that will bear the tension-compression load effectively separates, when the node is bent promptly, dog bone formula edge of a wing connection apron only undertakes the pulling force, pressure is undertaken by edge of a wing connection apron pressure-bearing unit, avoid connecting the apron at dog bone formula edge of a wing under the increase along with corner and circulation load number of times, serious buckling appears, and then lead to the node bearing capacity to descend rapidly, hysteresis curve appears the rigidity of certain degree, the degeneration of intensity, influence node anti-seismic performance.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a weakening formula edge of a wing connection cover plate pressure-bearing device, including a pair of H type non-yield steel beam on same horizontal plane, two H type non-yield steel beams splice, the web of H type non-yield steel beam is vertical, on the H type non-yield steel beam, the lower limb level sets up, the outside of one of them H type non-yield steel beam is fixed on vertical steel sheet, on the H type non-yield steel beam, the concatenation department on the edge of a wing at both ends is fixed with dog bone formula edge of a wing connection cover plate for the web symmetry respectively down, the external fixation of dog bone formula edge of a wing connection cover plate pressure-bearing unit, both sides are fixed with the web connection cover plate of symmetry respectively around the web concatenation department of H type non-yield steel beam.
Furthermore, a first high-strength bolt penetrates through the flange connecting cover plate pressure-bearing unit on one side far away from the steel plate, the dog-bone flange connecting cover plate and the flange of the movable H-shaped non-yielding steel beam in sequence and is fixed through a bolt, and a third high-strength bolt penetrates through the flange connecting cover plate pressure-bearing unit on one side close to the steel plate, the dog-bone flange connecting cover plate and the flange of the fixed H-shaped non-yielding steel beam in sequence and is fixed through a bolt.
Furthermore, a dog-bone flange connecting cover plate bolt hole and a dog-bone flange connecting cover plate slotted hole which are respectively matched with the high-strength bolt III and the high-strength bolt I are arranged at the left end and the right end of the dog-bone flange connecting cover plate, a flange connecting cover plate pressure-bearing unit bolt hole and a flange connecting cover plate pressure-bearing unit slotted hole which are respectively matched with the high-strength bolt III and the high-strength bolt I are respectively arranged at the left end and the right end of the flange connecting cover plate pressure-bearing unit, the flange connecting cover plate pressure-bearing unit slotted hole and the dog-bone flange connecting cover plate slotted hole are not completely overlapped, the size of the overlapped part is the aperture of one high-strength bolt, and the high-strength bolt I penetrates through the overlapped part to be connected with the flange of the H-shaped non-yielding steel beam.
Furthermore, the middle part of the dog-bone flange connecting cover plate is provided with symmetrical arc-shaped notches at two sides in the width direction.
Furthermore, the width of the dog-bone flange connecting cover plate and the width of the flange connecting cover plate pressure-bearing unit are the same, the length of the dog-bone flange connecting cover plate and the flange connecting cover plate pressure-bearing unit are the same, and the dog-bone flange connecting cover plate and the flange connecting cover plate pressure-bearing unit are overlapped.
Furthermore, the thickness of the flange connecting cover plate pressure-bearing unit is slightly larger than that of the dog-bone flange connecting cover plate.
The beneficial effects of the utility model reside in that:
the weakened type flange connecting cover plate pressure-bearing device effectively separates an object bearing a tension-compression load, realizes that the dog-bone type flange connecting cover plate only bears tension but not pressure in the node bending process, changes the pressure required to be borne by the traditional node flange connecting cover plate to be borne by the flange connecting cover plate device, effectively avoids the phenomenon that the connection cover plate is easy to generate serious compression buckling along with the increase of the turn angle and the circulating load frequency of weakened type nodes with cantilever beam sections, thereby improving the node bearing capacity, reducing the rigidity of a hysteretic curve and the degradation of strength, and fully playing the node anti-seismic performance.
The weakened flange connection cover plate pressure-bearing device is simple to mount, convenient to operate in site construction, clear in action mechanism and capable of improving deformation and energy consumption capacity of the node.
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/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features 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 a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is an installation front view of the embodiment of the present invention, without drawing the connecting bolt of the web, the oblong hole is shown in perspective;
fig. 4 is a schematic structural view of a flange connection cover plate pressure-bearing unit according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a dog-bone flange connection cover plate according to an embodiment of the present invention;
fig. 6 is the utility model discloses top view that apron pressure-bearing device is connected on edge of a wing and apron stacks is connected on dog bone formula edge of a wing, adopts perspective schematic.
Reference numerals:
1. an H-shaped non-yielding steel beam; 2. the dog-bone flange is connected with the cover plate; 3. the flange is connected with the cover plate pressure-bearing unit; 4. the web plate is connected with the cover plate; 5-1, high-strength bolts I; 5-2, high-strength bolts II; 5-3, high-strength bolts III; 6. the dog-bone type flange is connected with the cover plate bolt hole; 7. the dog-bone flange is connected with the long round hole of the cover plate; 8. the flange is connected with a bolt hole of the cover plate pressure-bearing device; 9. the flange is connected with the long round hole of the cover plate pressure-bearing device.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit 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, and the features in the following embodiments and examples 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 any way limiting the scope of the invention; for a better explanation of 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 parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Please refer to fig. 1 to 6, which are views of a weakened flange connection cover plate pressure-bearing device, including a pair of H-shaped unyielding steel beams 1 on the same horizontal plane, two H-shaped unyielding steel beams 1 are spliced, a web of the H-shaped unyielding steel beam 1 is vertical, an upper flange and a lower flange of the H-shaped unyielding steel beam 1 are horizontally arranged, and an outer side of one of the H-shaped unyielding steel beams 1 is fixed on a vertical steel plate. The splicing parts of flanges at the upper end and the lower end of the H-shaped non-yielding steel beam 1 are respectively fixed with a dog-bone flange connecting cover plate 2 which is symmetrical relative to a web, and the outer part of the dog-bone flange connecting cover plate 2 is fixed with a flange connecting cover plate pressure-bearing unit 3. The front side and the rear side of the web splicing position of the H-shaped non-yielding steel beam 1 are symmetrically and respectively provided with a web connecting cover plate 4, and the web connecting cover plate 4 splices and fixes the web of the H-shaped non-yielding steel beam 1.
The middle part of dog bone formula edge of a wing connection apron 2 is provided with the arc breach of symmetry in width direction's both sides, and the arc breach plays the intensity effect that weakens dog bone formula edge of a wing connection apron 2, and the purpose reduces the rigidity of concatenation section, avoids when the corner is great, and the screw of connection apron destroys earlier.
The dog-bone type flange connecting cover plate 2 and the flange connecting cover plate pressure-bearing unit 3 are the same in width and length and are overlapped.
And the high-strength bolt I5-1 sequentially penetrates through the flange connecting cover plate pressure-bearing unit 3 on one side far away from the steel plate, the dog-bone flange connecting cover plate 2 and the flange of the movable H-shaped non-yielding steel beam 1 and then is fixed through bolts. And the high-strength bolts III 5-3 sequentially penetrate through the flange connecting cover plate pressure-bearing unit 3 close to one side of the steel plate, the dog-bone flange connecting cover plate 2 and the flange of the fixed H-shaped non-yielding steel beam 1 and are fixed through the bolts. And the high-strength bolt II 5-2 sequentially penetrates through the web connecting cover plate 4, the web of the H-shaped non-yielding steel beam 1 and the web connecting cover plate 4 and then is fixed by nuts.
The thickness of the flange connecting cover plate pressure-bearing unit 3 is slightly larger than that of the dog-bone flange connecting cover plate 2. The steel material has good ductility when being pulled, but is easy to generate buckling instability when being pressed. Therefore, the thickness of the compression object flange connection cover plate pressure-bearing unit 3 needs to be increased so as to avoid the occurrence of the compression buckling phenomenon.
The left end and the right end of the dog-bone type flange connecting cover plate 2 are respectively provided with a dog-bone type flange connecting cover plate bolt hole 6 and a dog-bone type flange connecting cover plate long round hole 7 which are respectively matched with the high-strength bolt III 5-3 and the high-strength bolt I5-1. The left end and the right end of the flange connecting cover plate pressure-bearing unit 3 are respectively provided with a flange connecting cover plate pressure-bearing unit bolt hole 8 and a flange connecting cover plate pressure-bearing unit long round hole 9 which are matched with the high-strength bolt III 5-3 and the high-strength bolt I5-1. The arrangement positions of the flange connecting cover plate pressure-bearing unit long round hole 9 and the dog-bone flange connecting cover plate long round hole 7 are not completely overlapped, the size of the overlapped part is the aperture of a high-strength bolt, and a high-strength bolt I5-1 penetrates through the overlapped part to be connected with the flange of the H-shaped non-yielding steel beam 1.
When the flange of the node is pressed, the left semicircular screw rod face of the high-strength bolt I5-1 is in contact with the hole wall of the oblong hole 9 of the flange connecting cover plate pressure-bearing unit to transfer force, a certain sliding space is reserved between the left semicircular screw rod face and the hole wall of the oblong hole 7 of the dog-bone flange connecting cover plate, and the rotating angle is increased; when the flange of the joint is pulled, the right semicircular screw rod face of the first high-strength bolt 5-1 is in contact with the oblong hole 7 of the connecting cover plate through the dog-bone-type flange to transfer force, a certain sliding space is reserved between the right semicircular screw rod face and the wall of the oblong hole 9 of the pressure-bearing unit of the connecting cover plate of the flange, the corner can be increased, namely the flange is mainly connected with the pressure-bearing unit 3 of the cover plate through the flange when the flange is pressed, and the dog-bone-type flange is mainly connected with the cover plate 2 through the flange when the flange is pulled, so that the separation of objects bearing the pulling and pressing loads is realized. The shearing force of the beam section is born by the web plate connected with the cover plate 4, and the bearing force at the joint of the cover plate is smaller than that of the H-shaped non-yielding steel beam 1.
And no filling material is filled between the screw rod of the high-strength bolt and the wall of the long circular hole.
The number of high-strength bolts required for connecting the H-shaped non-yielding steel beam 1 and the device meets the requirement of transferring the shearing force of the energy dissipation assembly.
The following describes a specific embodiment of the present invention, taking an example of an embodiment of the present invention.
Device processing:
the H-shaped non-yielding steel beam 1 is divided into two sections in a factory, and conventional column processing with cantilever beam sections is carried out. According to the flange width, the flange thickness, the web height and the web thickness of the H-shaped non-yielding steel beam 1, a corresponding dog-bone flange connecting cover plate 2, a flange connecting cover plate pressure-bearing unit 3, a web connecting cover plate 4 and a high-strength bolt are selected and processed.
Device installation:
the flange connecting cover plate pressure-bearing unit 3 and the dog-bone flange connecting cover plate 2 are arranged in an aligned mode, and the high-strength bolts III 5-3 penetrate through the flange connecting cover plate pressure-bearing unit bolt holes 8 and the dog-bone flange connecting cover plate bolt holes 6 in sequence to be connected with the H-shaped non-yielding steel beam 1; and a high-strength bolt I5-1 penetrates through the overlapped part of the flange connecting cover plate pressure-bearing unit long circular hole 9 and the dog-bone flange connecting cover plate long circular hole 7 in sequence to be connected with the H-shaped non-yielding steel beam 1. And a second high-strength bolt 5-2 penetrates through the web connecting cover plate 4 to be connected with the H-shaped non-yielding steel beam 1.
The utility model provides a apron pressure-bearing device is connected on the edge of a wing, the device is through connecting apron 2 and the edge of a wing to dog bone formula edge of a wing and connecting the slotted hole on the apron pressure-bearing unit 3 and stagger and arrange, reach and carry out the purpose of separating bearing the tension load object, mainly connect the high strength bolt pressure-bearing atress of apron 2 by dog bone formula edge of a wing when the node edge of a wing is pulled promptly, and connect the high strength bolt pressure-bearing atress of apron pressure-bearing unit 3 by the edge of a wing during the pressurized, effectively avoided when the node corner is too big, appear the edge of a wing and connect the apron because of the pressurized and produce the phenomenon of great bucking outside the plane.
The specific stress analysis process is as follows:
when the node steel beam flange is pulled, the stress can be divided into two stages: in the first stage, when the node corner is small, force is transmitted to the flange connecting cover plate pressure-bearing unit 3 through the static friction force contact surface of the bolt head of the high-strength bolt and the flange connecting cover plate pressure-bearing unit 3, and the high-strength bolt is in a friction type; and in the second stage, when the node angle is larger, a certain sliding space is arranged between the wall of the oblong hole 9 of the weakened flange connecting cover plate pressure-bearing unit and the screw rod of the high-strength bolt, so that in the sliding process of the high-strength bolt in the oblong hole, part of force is transferred to the flange connecting cover plate pressure-bearing unit 3 by the friction force generated by the contact surface between the bolt head of the high-strength bolt and the flange connecting cover plate pressure-bearing unit 3, and the other part of force is transferred to the dog bone flange connecting cover plate 2 by the contact surface between the screw rod of the high-strength bolt and the hole wall of the dog bone flange connecting cover plate oblong hole 7, and the high-strength bolt is in a pressure-bearing type.
When the node steel beam flange is pressed, the stress can be divided into two stages: in the first stage, when the node corner is small, force is transmitted to the flange connecting cover plate pressure-bearing unit 3 through the static friction force contact surface of the bolt head of the high-strength bolt and the flange connecting cover plate pressure-bearing unit 3, and the high-strength bolt is of a friction type; and in the second stage, when the node angle is larger, the high-strength bolt is in sliding contact with the hole wall of the long circular hole 9 of the flange connecting cover plate pressure-bearing unit after sliding, the force is transmitted to the flange connecting cover plate pressure-bearing unit 3, and the high-strength bolt is in a pressure-bearing type at the moment. The dog-bone flange connection cover plate 2 is in a basically unstressed state in the compression process.
Therefore, the device can effectively avoid the phenomenon that the dog-bone type flange connecting cover plate 2 is pressed and bent when the node is bent, and the thickness of the dog-bone type flange connecting cover plate 2 is slightly larger than that of the dog-bone type flange connecting cover plate in order to prevent the flange connecting cover plate pressure-bearing unit 3 from being pressed and bent. The device can ensure the fullness of a hysteresis curve, improve the energy consumption capability and the deformability of the node, and better exert the seismic performance of the node.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to 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 scope of the claims of the present invention.
Claims (6)
1. The utility model provides a weaken formula edge of a wing connection apron pressure-bearing device which characterized in that: the novel steel beam structure comprises a pair of H-shaped non-yielding steel beams (1) on the same horizontal plane, the two H-shaped non-yielding steel beams (1) are spliced, webs of the H-shaped non-yielding steel beams (1) are vertical, the upper flange and the lower flange of the H-shaped non-yielding steel beams (1) are horizontally arranged, the outer side of one H-shaped non-yielding steel beam (1) is fixed on a vertical steel plate, dog-bone-type flange connecting cover plates (2) which are symmetrical relative to the webs are respectively fixed at the splicing positions of the flanges at the upper end and the lower end of the H-shaped non-yielding steel beam (1), flange connecting cover plate pressure-bearing units (3) are fixed outside the dog-bone-type flange connecting cover plates (2), and web connecting cover plates (4) are symmetrically fixed on the front side and the rear side of the web splicing position of the H-shaped non-yielding steel beam (1).
2. The weakened flange joint cover plate pressure-bearing device according to claim 1, wherein: the high-strength bolts (5-1) sequentially penetrate through the flange connecting cover plate pressure-bearing unit (3) on one side far away from the steel plate, the dog-bone flange connecting cover plate (2) and the flange of the movable H-shaped non-yielding steel beam (1) and are fixed through the bolts, and the high-strength bolts (5-3) sequentially penetrate through the flange connecting cover plate pressure-bearing unit (3) on one side close to the steel plate, the dog-bone flange connecting cover plate (2) and the flange of the fixed H-shaped non-yielding steel beam (1) and are fixed through the bolts.
3. The weakened flange joint cover plate pressure-bearing device according to claim 2, wherein: the left end and the right end of the dog-bone type flange connecting cover plate (2) are provided with a dog-bone type flange connecting cover plate bolt hole (6) and a dog-bone type flange connecting cover plate slotted hole (7) which are respectively matched with the high-strength bolt III (5-3) and the high-strength bolt I (5-1), the left end and the right end of the flange connecting cover plate pressure-bearing unit (3) are respectively provided with a flange connecting cover plate pressure-bearing unit bolt hole (8) and a flange connecting cover plate pressure-bearing unit slotted hole (9) which are matched with the high-strength bolt III (5-3) and the high-strength bolt I (5-1), the arrangement positions of the flange connecting cover plate pressure-bearing unit slotted hole (9) and the dog-bone flange connecting cover plate slotted hole (7) are not completely overlapped, the size of the overlapped part is the aperture of the high-strength bolt, and the high-strength bolt I (5-1) penetrates through the overlapped part to be connected with the flange of the H-shaped non-yielding steel beam (1).
4. The weakened flange joint cover plate pressure-bearing device according to claim 1, wherein: the middle part of the dog-bone flange connecting cover plate (2) is provided with symmetrical arc notches at two sides in the width direction.
5. The weakened flange joint cover plate pressure-bearing device according to claim 1, wherein: the dog-bone type flange connecting cover plate (2) and the flange connecting cover plate pressure-bearing unit (3) are the same in width and length and are overlapped.
6. The weakened flange joint cover plate pressure-bearing device according to claim 5, wherein: the thickness of the flange connecting cover plate pressure-bearing unit (3) is slightly larger than that of the dog-bone flange connecting cover plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221330998.8U CN217460961U (en) | 2022-05-30 | 2022-05-30 | Weakening type flange connecting cover plate pressure-bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221330998.8U CN217460961U (en) | 2022-05-30 | 2022-05-30 | Weakening type flange connecting cover plate pressure-bearing device |
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| Publication Number | Publication Date |
|---|---|
| CN217460961U true CN217460961U (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221330998.8U Active CN217460961U (en) | 2022-05-30 | 2022-05-30 | Weakening type flange connecting cover plate pressure-bearing device |
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| Country | Link |
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| CN (1) | CN217460961U (en) |
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2022
- 2022-05-30 CN CN202221330998.8U patent/CN217460961U/en active Active
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