CN215055878U - Assembled steel structure node connection structure - Google Patents
Assembled steel structure node connection structure Download PDFInfo
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- CN215055878U CN215055878U CN202120739243.2U CN202120739243U CN215055878U CN 215055878 U CN215055878 U CN 215055878U CN 202120739243 U CN202120739243 U CN 202120739243U CN 215055878 U CN215055878 U CN 215055878U
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Abstract
The utility model relates to an assembly type steel structure node connection structure, belonging to the technical field of assembly type steel structure earthquake resistance and novel material damping energy dissipation, comprising a short beam arranged between a stand column and a cross beam with an I-shaped cross section, wherein the short beam is consistent with the cross section of the cross beam and one end of the short beam is aligned with the cross beam; one end of the short beam is fixedly connected with the upright post, and the other end of the short beam is provided with a soft steel energy dissipation component with a yield point smaller than that of the cross beam and the upright post, so that after an earthquake, damage appears on the soft steel energy dissipation component; the soft steel energy dissipation component comprises an upper energy dissipation component and a lower energy dissipation component which are detachably connected to the upper portion and the lower portion of the short beam respectively, and the other ends of the upper energy dissipation component and the lower energy dissipation component are detachably connected with the cross beam. The utility model discloses the power consumption ability is strong, and it is controllable to damage the position, damages the easy change of piece after shaking, has solved among the prior art structural component itself that appears after steel construction node connection plasticity hinge moves outward and has taken place to damage, the power consumption ability weak point, the difficult realization of damage control and shake the high problem of back damage maintenance cost.
Description
Technical Field
The utility model belongs to the technical field of assembled steel construction antidetonation and novel material damping power consumption shock attenuation, a assembled steel construction nodal connection structure is related to.
Background
In the earthquake-proof design of a building structure, the earthquake-proof design principle of a 'strong column and weak beam' and a 'strong node and weak member' is a reasonable failure mode which needs to be ensured by the structural design, and the beam is damaged before the column when the structure is damaged in an earthquake to be ensured no matter the structure is a reinforced concrete structure or a steel structure. The two basic principles can better ensure the integrity of the structure, realize an integral yield mechanism and easily ensure the safe transfer of personnel, and the strong column and the weak beam can form a local yield mechanism, so that the whole layer collapses after the column is broken to easily cause the casualties of the personnel.
In order to realize the integral failure mode, the mode adopted in the prior concrete structure design is to strengthen the strength of the column and multiply the strength by an amplification factor under the condition of ensuring the bearing capacity of the beam, the amplification factor of the column in the national anti-seismic design specification reaches 1.7 in the primary frame with the maximum amplification factor, and the practical relevant analysis suggests that the amplification factor reaches 2.0 to ensure the realization of 'strong column and weak beam'; in the previous steel structure research, in order to more reasonably realize the ductile damage of a strong column weak beam and a strong node weak member, in order to avoid the brittle fracture of a beam column connecting part, a route of a reinforced column is not taken, the adopted method mainly transfers a plastic deformation area from the beam column connecting part which is easy to generate brittle fracture damage to a beam section which is a certain distance away from a welding line, and can reversely guide a beam to generate plastic hinge, so that a plurality of improved nodes are generated, and the beam end weakening type connecting node and the beam end reinforced type connecting node are mainly provided. However, these two types of improved nodes still have some drawbacks: the weakening or strengthening is related to the stiffness of the beam itself; the design is difficult to control; damage assessment presents major difficulties; the beam is bent after the plastic hinge occurs; maintenance is difficult and costly.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide an assembled steel structure node connection structure, so as to solve the problem that a structural member itself is damaged after a steel structure node connection plastic hinge is moved outward in the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an assembly type steel structure node connecting structure comprises a short beam arranged between an upright post and a cross beam with an I-shaped cross section, wherein the cross section of the short beam is consistent with that of the cross beam, and one end of the short beam is aligned with the cross beam; one end of the short beam is fixedly connected with the upright post, and the other end of the short beam is provided with a soft steel energy dissipation component with a yield point smaller than that of the cross beam and the upright post, so that after an earthquake, damage appears on the soft steel energy dissipation component; the soft steel energy dissipation component comprises an upper energy dissipation component and a lower energy dissipation component which are detachably connected to the upper portion of the short beam and the lower portion of the short beam respectively, and the other ends of the upper energy dissipation component and the lower energy dissipation component are detachably connected with the cross beam.
Optionally, the upper energy dissipating member is a rectangular plate located on the upper side or the lower side of the upper wing plate of the short beam.
Optionally, the upper energy dissipation member is a T-shaped plate located on the lower side of the upper wing plate of the short beam, and a large end surface of the upper energy dissipation member is attached to the upper wing plate of the short beam.
Optionally, the lower energy dissipation member is a rectangular plate located on the upper side or the lower side of the lower wing plate of the short beam.
Optionally, the lower energy dissipation member is a T-shaped plate located on the upper side of the lower wing plate of the short beam, and a large end surface of the lower energy dissipation member is attached to the lower wing plate of the short beam.
Optionally, the upright is i-shaped, and an upright stiffening rib is arranged at a position of the upright corresponding to the short beam.
Optionally, the stud stiffener includes two sheet stiffeners disposed coplanar with the two flanges of the short beam, respectively.
Optionally, the connection mode between the upright post stiffening rib and the upright post is welding connection.
Optionally, the upper energy dissipating member is connected to the short beam or the cross beam by a first fastener, and the lower energy dissipating member is connected to the short beam or the cross beam by a second fastener.
Optionally, the first and second fasteners are friction-type high-strength bolts.
Optionally, the connection mode between the short beam and the upright column is welding connection.
The beneficial effects of the utility model reside in that: the soft steel energy dissipation component is arranged between the upright post and the cross beam, so that the damage after earthquake is far away from the beam-column connection part, the connection component can be replaced after earthquake, the energy dissipation capability is strong, the node connection damage is controllable, the repair cost is controllable, the economical efficiency is good, and the problems that in the prior art, the structural component is damaged after the steel structure node connection plastic hinge moves outwards, the energy dissipation capability is weak, the damage control is difficult to realize, and the damage maintenance cost is high after earthquake are solved.
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 front view of the node connection structure of the present invention;
fig. 2 is a top view of the node connecting structure of the present invention;
fig. 3 is a side view of the node connecting structure of the present invention.
Reference numerals: the energy-consuming structure comprises upright columns 1, short beams 2, cross beams 3, upper energy-consuming components 4, lower energy-consuming components 5, fasteners 6 and upright column stiffening ribs 7.
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 understanding 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.
Referring to fig. 1 to 3, an assembly type steel structure node connection structure includes a short beam 2 disposed between a column 1 and a beam 3 having an i-shaped cross section, the short beam 2 having a cross section identical to that of the beam 3 and having one end aligned with the beam 3; one end of the short beam 2 is fixedly connected with the upright post 1, and the other end is provided with a soft steel energy dissipation component with a yield point smaller than that of the beam 3 and the upright post 1, so that after an earthquake, damage appears on the soft steel energy dissipation component; the soft steel energy dissipation component comprises an upper energy dissipation component 4 and a lower energy dissipation component 5 which are respectively connected to the upper part of the short beam 2 and the lower part of the short beam 2, and the other ends of the upper energy dissipation component 4 and the lower energy dissipation component 5 are connected with the cross beam 3. The connection mode between the short beam 2 and the upright post 1 is preferably welded, and the upper energy consumption component 4, the lower energy consumption component 5 and the short beam 2, and the upper energy consumption component 4, the lower energy consumption component 5 and the cross beam 3 are detachably connected through fasteners 6.
The utility model discloses an energy consumption component adopts the mild steel preparation of low yield point, have high ductility and low yield point, can surrender through self damage when the earthquake takes place and dissipate seismic energy, therefore can control the damage well and appear in mild steel connecting elements, form the plasticity hinge, and then can guarantee that major structure's beam column component does not take place to destroy, and the energy consumption component can be changed after destroying, do not need to demolish whole building structure, it is good to have economic nature, and can effectively promote the characteristics of structural toughness, be suitable for popularization and application in the earthquake area.
The utility model discloses an upper portion power consumption component 4 can be for being located 2 rectangular plates of wing upside or downside on the quarter butt, also can be for being located 2T templates of wing downside on the quarter butt, and the laminating of wing on the big terminal surface of upper portion power consumption component 4 and the quarter butt 2.
The utility model discloses a lower part power consumption component 5 can be for being located 2 rectangular plates of aerofoil upside or downside under the quarter butt girder, also can be for being located 2T templates of aerofoil upside under the quarter butt girder, and 5's of lower part power consumption component big terminal surface and 2 lower aerofoil laminating of quarter butt girder.
Preferably, the upper energy dissipation member 4 is a rectangular plate located on the lower side of the upper wing plate of the short beam 2, and the lower energy dissipation member 5 is a T-shaped plate located on the upper side of the lower wing plate of the short beam 2.
The utility model discloses a stand 1 can be the I shape, and stand 1 is equipped with stand stiffening rib 7 corresponding to the position of stub beam 2, and stand stiffening rib 7 is including being flaky stiffening rib with two blocks of 2 two wing boards coplanarities settings of stub beam respectively. The connection between the column stiffener 7 and the column 1 is preferably welded.
The utility model discloses an upper portion power consumption component 4 is connected with stub beam 2 or crossbeam 3 through first fastener, and lower part power consumption component 5 is connected with stub beam 2 or crossbeam 3 through the second fastener, the preferred friction type high strength bolt of first fastener and second fastener. The friction type high-strength bolt connection is adopted, so that the site construction is simple and rapid, and the replacement is convenient after the damage.
The utility model discloses antidetonation design principle based on "strong post weak beam", "strong node weak component", adopts the theory of the weak position of design, has designed a novel assembled steel frame beam column connected node structure based on the removable weak position of design. According to the expected fracture position of the steel frame structure after being damaged by earthquake, namely, the part of the beam end close to the column node is broken, the steel beam is divided into three sections, namely, a middle beam section (beam 3) and short beams positioned on two sides of the middle beam section, the parts of the short beams on two sides and the expected plastic hinge are determined according to the bending moment distribution characteristics of the frame structure under the load action, the two short beam sections extending outwards on two sides and the upright post are welded into a whole in a factory, the part of the expected plastic hinge extending out is processed into an energy-consuming connecting part by adopting a designed low-yield-strength steel plate (LY-100, 160 and 225) to be connected with the middle beam section, and the connecting part is connected with the steel beam by adopting a friction type high-strength bolt.
The utility model adopts the connecting plate made of steel with low yield strength at the appearance part of the expected plastic hinge to splice the beam and the beam, thereby realizing the dissipation of seismic energy by a bending plastic hinge mechanism while ensuring the bending bearing capacity of the connecting section; on the other hand, the structural member is not damaged after the earthquake, so that the economic loss is reduced, the connecting plate in the damaged plastic hinge area can be replaced, and the structural function of the damaged building can be quickly recovered.
The utility model provides a beam column node connecting structure, wherein the weak part can be designed and can be replaced after a major earthquake, and the energy can be dissipated according to the ductility characteristics of the material; through the grade difference of material strength, the weak part of the frame beam is designed, plastic hinge appears at the weak part in an earthquake, the purposes of a strong column, a weak beam and a strong node and a weak component are realized, energy consumption is realized through deformation of a low yield point mild steel connecting component, main structural components such as the beam and the column are not damaged, only the damaged connecting component is replaced after the earthquake, the structure still can keep integral stable normal use, and further the steel frame is easy to repair after the earthquake, the repairing cost is low, in addition, the bolt connection is easy to operate, and the construction period is saved.
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 (10)
1. The utility model provides an assembled steel construction node connection structure which characterized in that: the cross section of the short beam is consistent with that of the cross beam, and one end of the short beam is aligned with the cross beam; one end of the short beam is fixedly connected with the upright post, and the other end of the short beam is provided with a soft steel energy dissipation component with a yield point smaller than that of the cross beam and the upright post, so that after an earthquake, damage appears on the soft steel energy dissipation component; the soft steel energy dissipation component comprises an upper energy dissipation component and a lower energy dissipation component which are detachably connected to the upper portion of the short beam and the lower portion of the short beam respectively, and the other ends of the upper energy dissipation component and the lower energy dissipation component are detachably connected with the cross beam.
2. An assembled steel structure node connection structure according to claim 1, wherein: the upper energy dissipation component is a rectangular plate located on the upper side or the lower side of the upper wing plate of the short beam.
3. An assembled steel structure node connection structure according to claim 1, wherein: the upper energy dissipation component is a T-shaped plate positioned on the lower side of the upper wing plate of the short beam, and the large end face of the upper energy dissipation component is attached to the upper wing plate of the short beam.
4. An assembled steel structure node connection structure according to claim 1, wherein: the lower energy dissipation component is a rectangular plate located on the upper side or the lower side of the lower wing plate of the short beam.
5. An assembled steel structure node connection structure according to claim 1, wherein: the lower energy dissipation component is a T-shaped plate located on the upper side of the short beam lower wing plate, and the large end face of the lower energy dissipation component is attached to the short beam lower wing plate.
6. An assembled steel structure node connection structure according to claim 1, wherein: the upright post is I-shaped, and upright post stiffening ribs are arranged at the positions of the upright post corresponding to the short beams.
7. An assembled steel structure node connection structure according to claim 6, wherein: the upright post stiffening rib comprises two flaky stiffening ribs which are respectively arranged in the same plane with the two wing plates of the short beam.
8. An assembled steel structure node connection structure according to any one of claims 6 to 7, wherein: the upright post stiffening rib and the upright post are connected in a welding manner.
9. An assembled steel structure node connection structure according to claim 1, wherein: the upper energy dissipation component is connected with the short beam or the cross beam through a first fastener, and the lower energy dissipation component is connected with the short beam or the cross beam through a second fastener.
10. An assembled steel structure node connection structure according to claim 9, wherein: the first fastener and the second fastener are friction type high-strength bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120739243.2U CN215055878U (en) | 2021-04-12 | 2021-04-12 | Assembled steel structure node connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120739243.2U CN215055878U (en) | 2021-04-12 | 2021-04-12 | Assembled steel structure node connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN215055878U true CN215055878U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120739243.2U Active CN215055878U (en) | 2021-04-12 | 2021-04-12 | Assembled steel structure node connection structure |
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| CN (1) | CN215055878U (en) |
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2021
- 2021-04-12 CN CN202120739243.2U patent/CN215055878U/en active Active
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