CN220285019U - Steel frame beam column node structure with improved continuous collapse resistance - Google Patents
Steel frame beam column node structure with improved continuous collapse resistance Download PDFInfo
- Publication number
- CN220285019U CN220285019U CN202321015670.1U CN202321015670U CN220285019U CN 220285019 U CN220285019 U CN 220285019U CN 202321015670 U CN202321015670 U CN 202321015670U CN 220285019 U CN220285019 U CN 220285019U
- Authority
- CN
- China
- Prior art keywords
- steel
- column
- beam connecting
- node structure
- plates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 99
- 239000010959 steel Substances 0.000 title claims abstract description 99
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 9
- 230000003313 weakening effect Effects 0.000 abstract description 8
- 230000008260 defense mechanism Effects 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007123 defense Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model provides a steel frame beam column node structure with improved continuous collapse resistance, which comprises a steel column, wherein steel beams are horizontally welded on two sides of the steel column, the steel column and the steel beams are I-shaped steel, at least one beam connecting plate is arranged at intervals along the length direction of the steel beam between two legs on the left side and the right side of a web plate on the end part of the steel beam, a stress device is arranged between two adjacent beam connecting plates, two adjacent beam connecting plates and corresponding steel column leg plates, and openings are arranged between the two adjacent beam connecting plates, the two adjacent beam connecting plates and the corresponding steel column leg plates on the middle part of a web plate of the end part of the steel beam. The utility model solves the problem of insufficient bearing capacity of the weakened section of the beam-column joint, and combines the measure of weakening the section of the web plate and reinforcing the reinforcing steel bar of the web plate; the plastic hinge moves outwards, the node ductility is improved, the bearing capacity of the weakened section under large deformation is improved, and the continuous collapse of the secondary defense mechanism resisting structure is formed.
Description
Technical Field
The utility model relates to a steel frame beam column node structure with improved continuous collapse resistance.
Background
The existing steel structure beam column nodes are fixed with the steel beams through welding, the bearing capacity is large, the stability is strong, plastic hinges are generated at welding joints, once the welding joints of the steel beams are cracked, the bearing capacity is rapidly reduced, and the structure is extremely unfavorable for continuous collapse resistance. Recently, many researchers have improved resistance to continuous collapse by developing various different weakening patterns to move the plastic hinge outward. For example, the beam flange dog-bone type weakening measures enable beam-column joints to meet the anti-seismic design requirements and the performance requirements of continuous collapse resistance of strong joints before cracking; the girder web round hole type weakening measure improves the ductility and the continuous collapse resistance of girder column joints. However, the weakened node ductility improvement measures tend to reduce the bearing capacity of the structure under large deformation, so that failure points occur in advance, and thus partial materials are underutilized, and the bearing capacity of the beam member is wasted.
Chinese CN 113756435A, a node for improving the continuous collapse resistance of a frame, provides a node for improving the continuous collapse resistance of a frame, and improves the continuous collapse resistance of a frame by considering a secondary defense design. The defects are that: this patent only considers the "secondary defense design" through the described embodiments, and does not consider the plastic hinge problem, so node failure tends to occur early at the beam-column weld.
Disclosure of Invention
In view of the above, the utility model aims to provide a steel frame beam column node structure with improved continuous collapse resistance, which solves the problem of insufficient bearing capacity of a beam column node weakened section, and combines the measures of web section weakening and web reinforcement; the plastic hinge moves outwards, the node ductility is improved, the bearing capacity of the weakened section under large deformation is improved, and the continuous collapse of the secondary defense mechanism resisting structure is formed.
The utility model is realized by adopting the following scheme: the utility model provides an improve steel frame beam column node structure of anti continuous collapse performance, includes the steel column, steel column both sides horizontal welding has the girder steel, steel column, girder steel are the I-steel, all be provided with at least one roof beam connecting plate along girder length direction interval between the both legs of web left and right sides on the girder steel tip, be provided with the stress device between two adjacent roof beam connecting plates, adjacent roof beam connecting plate and the corresponding steel column shank board, be provided with the opening between two adjacent roof beam connecting plates, adjacent roof beam connecting plate and the corresponding steel column shank board on the web middle part of girder steel tip.
Further, the beam connecting plates and the steel column leg plates are respectively provided with a reserved hole, the stress device is a bent reinforcing steel bar with arc-shaped bending, and two ends of the bent reinforcing steel bar are welded and fixed on the reserved holes on the two adjacent beam connecting plates or the adjacent beam connecting plates and the corresponding steel column leg plates.
Further, the steel column is provided with stiffening rib plates corresponding to leg plates of the steel beam between two leg parts on the left side and the right side of the web plate.
Further, the arc-shaped bending is vertical upwards and the opening part is downward, and the arc-shaped bending height is greater than 1/5 of the height of the beam.
Further, the bending steel bar is 1/2 of the arc bending height.
Further, the length of the bent steel bars is between the height of the beam and the height of the beam which is 2 times of the height of the beam.
Further, the opening is round or polygonal.
Compared with the prior art, the utility model has the following beneficial effects: the problem of insufficient bearing capacity of a beam column node weakened section is solved, and the method combines the web section weakening and web steel reinforcement; the plastic hinge moves outwards, the node ductility is improved, the bearing capacity of the weakened section under large deformation is improved, and the continuous collapse of the secondary defense mechanism resisting structure is formed.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an exploded structure of an embodiment of the present utility model;
FIG. 3 is a schematic structural view of a multi-beam connection board according to an embodiment of the present utility model;
FIG. 4 is a graph of test load versus displacement for an embodiment of the present utility model.
In the figure: 1-a steel column; 2-steel beams; 3-beam connection plates; 4-bending the steel bar; 5-stiffening rib plates; 6-opening.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1-4, this embodiment provides a steel frame beam column node structure for improving anti-continuous collapse performance, including steel column 1, steel column both sides horizontal welding has girder steel 2, steel column, girder steel are the i-steel, and steel column and girder steel are connected into the frame substructure through welded form, and the i-section is in order to guarantee the bearing capacity and the stability of structure, all be provided with at least one beam connection board 3 along girder length direction interval between two shank on the web left and right sides on the girder steel tip, be provided with stress device between two adjacent beam connection boards, adjacent beam connection board and the corresponding steel column shank board, be provided with opening 6 between two adjacent beam connection boards, adjacent beam connection board and the corresponding steel column shank board on the web middle part of girder steel tip, the opening size can be selected according to girder steel deformability for improve the node, make the plastic hinge move outward, take circular opening as an example, by the embodiment, the web opening diameter is big more its bearing capacity is less earlier. Along with the increase of load in the loading process, the reinforcing steel bars start to assist the beam to bear the load. The impact of different hole diameters on the ultimate bearing capacity is less than 5%, but the impact on the failure mode is larger.
In this embodiment, the preformed holes are respectively formed in the beam connecting plates and the steel column leg plates, the stress device is a bent reinforcing steel bar 4 with an arc-shaped bend, two ends of the bent reinforcing steel bar are welded and fixed on the preformed holes corresponding to two adjacent beam connecting plates or the adjacent beam connecting plates and the corresponding steel column leg plates, the preformed holes are used for installing reinforcing steel bars, and the preformed holes are fixed in a welding mode so as not to directly weld the bent reinforcing steel bars on the beam columns, thereby affecting the normal work of the beam columns and increasing the length of welding lines, and specifically, two bent reinforcing steel bars are respectively arranged on two sides of a beam web and used for resisting axial force under large deformation to play a catenary effect.
In this embodiment, the leg plate corresponding to the steel beam is provided with a stiffening rib plate 5 between the two leg parts on the left and right sides of the web plate on the steel column, and the position of the column stiffening rib plate is equal to the upper and lower flanges of the two side beams, so that continuity is increased, and the bearing capacity and stability of the node are improved.
As in the load-displacement curve of fig. 4, the bending heightaFrom small to large, RRWS samples exhibit three special failure modes. The initial cracking of the mode I occurs at the reinforcing steel bars, and the catenary effect cannot be effectively exerted, so that a secondary defense mechanism cannot be formed; the mode II cracks occur at the weld joints of the beam ends, so that the nodes fail in advance; the mode III cracks firstly occur at the weakening web, the steel bar assists the steel beam to bear force in the straightening process, after the steel beam flange is necked and broken, the steel bar becomes a main bearing member, the catenary effect is exerted, and a second defense line is provided for the bearing of the member, so that the mode III crack is a more ideal result. The bending height of the steel bar is selected according to the deformability of the beam, so that the plastic hinge can be effectively generated in advance, and a damage mode favorable for resisting continuous collapse can be formed. The failure mode of the test piece is related to whether the plastic hinge is formed first or the reinforcing bar plays a main role first, so the reinforcing bar is bent to a heightaMore than 0.2 times the beam height, i.e. the arc-shaped bend is vertically upward and the mouth is downward, the arc-shaped bend height is greater than the beam heighth1/5 of (C); diameter of steel bardIs arranged as the bending height of the steel baraIs most beneficial to the secondary defense mechanism, namely, the bent steel bar is 1/2 of the arc-shaped bent height; length of reinforcing barlThe beam is arranged between 1 and 2 times of the beam height, the ultimate bearing capacity is the greatest, and the axial force of the steel bar and the catenary effect of the node can be fully exerted, namely the length of the bent steel bar is between the length of the beam height and the length of the beam height which are 2 times of the length of the steel barlIs the distance between two adjacent beam connecting plates or the adjacent beam connecting plates and the corresponding steel column leg plates.
In this embodiment, for reasonable design, the opening may be circular, polygonal, etc.
The utility model can also be applied to honeycomb beams, and improves the bearing capacity and the continuous collapse resistance of the honeycomb beams;
the utility model solves the problem of insufficient bearing capacity of the weakened section of the beam-column joint, and combines the measure of weakening the section of the web plate and reinforcing the reinforcing steel bar of the web plate; the plastic hinge moves outwards, the node ductility is improved, the bearing capacity of the weakened section under large deformation is improved, and the continuous collapse of the secondary defense mechanism resisting structure is formed;
the utility model adopts the measure of combining the web openings and the reinforcement of the steel bars, thereby greatly improving the utilization rate of materials;
the steel bars are placed on the bottom flange of the beam, so that the flatness and normal working capacity of the beam are not damaged, the near height of an indoor space is reduced, and the steel bars are stressed and deformed under the condition of large deformation. The arc bending of the steel bar tends to be gentle, and the energy loss in the process of straightening the steel bar can be reduced.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, the orientation or positional relationship indicated by the terms used to indicate positional relationships such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. applied to any of the above-described technical aspects of the present disclosure are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present patent, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present patent, and the terms used to indicate shapes applied to any of the above-described technical aspects of the present disclosure include shapes that are approximated, similar or close thereto unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.
Claims (7)
1. The utility model provides an improve steel frame beam column node structure of anti continuous collapse performance, its characterized in that, includes the steel column, steel column both sides horizontal welding has the girder steel, steel column, girder steel are the I-steel, all be provided with at least one roof beam connecting plate along girder steel length direction interval between the both legs of web left and right sides on the girder steel tip, be provided with the stress device between two adjacent roof beam connecting plates, adjacent roof beam connecting plate and the corresponding steel column shank board, be provided with the opening between two adjacent roof beam connecting plates, adjacent roof beam connecting plate and the corresponding steel column shank board on the web middle part of girder steel tip.
2. The steel frame beam column node structure according to claim 1, wherein the beam connecting plates and the steel column leg plates are respectively provided with a reserved hole, the stress device is a bent reinforcing steel bar with an arc-shaped bent structure, and two ends of the bent reinforcing steel bar are welded and fixed on the reserved holes on the two adjacent beam connecting plates or the adjacent beam connecting plates and the corresponding steel column leg plates.
3. The steel frame beam column node structure according to claim 2, wherein stiffening rib plates are arranged on the steel column between the leg parts of the left and right sides of the web plate and correspond to the leg plates of the steel beam.
4. A steel frame beam column node structure according to claim 3, wherein the arc bend is vertically upward and mouth downward, the arc bend height being greater than 1/5 of the beam height.
5. The steel frame beam column node structure of claim 4, wherein the bent-up steel bar is 1/2 of the arc-shaped bent-up height.
6. The steel frame beam column node structure of claim 5, wherein the length of the bent steel bar is between the beam height length and 2 beam height lengths.
7. The steel frame beam column node structure of claim 6, wherein the opening is circular, polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015670.1U CN220285019U (en) | 2023-04-28 | 2023-04-28 | Steel frame beam column node structure with improved continuous collapse resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321015670.1U CN220285019U (en) | 2023-04-28 | 2023-04-28 | Steel frame beam column node structure with improved continuous collapse resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220285019U true CN220285019U (en) | 2024-01-02 |
Family
ID=89338831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321015670.1U Active CN220285019U (en) | 2023-04-28 | 2023-04-28 | Steel frame beam column node structure with improved continuous collapse resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220285019U (en) |
-
2023
- 2023-04-28 CN CN202321015670.1U patent/CN220285019U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105672519A (en) | Replaceable shearing type corrugated web energy dissipation connection beam | |
| CN211572019U (en) | Box shaped steel concrete column and concrete beam connected node | |
| JP2002070326A (en) | Reinforced structure for steel frame structural material | |
| CN220285019U (en) | Steel frame beam column node structure with improved continuous collapse resistance | |
| CN211172412U (en) | Connecting joint of beam main rib and cross steel rib column | |
| CN205502282U (en) | Removable shearing type corrugated web energy dissipation is roof beam even | |
| CN215670412U (en) | High-strength steel bar truss floor bearing plate | |
| CN105256727B (en) | Transverse reinforcing device for corrugated steel web combination beam | |
| CN214659214U (en) | Prefabricated wallboard beam column node structure of assembled | |
| CN210713201U (en) | Novel multi-cavity steel plate combined shear wall and H-shaped steel beam connecting node | |
| CN211775100U (en) | Assembled low-rise building structure | |
| CN211646957U (en) | Assembled house ground reinforcing plate structure | |
| CN109944333B (en) | Connection structure of inclined steel rib column and inclined steel rib beam and construction method thereof | |
| CN113136950A (en) | Novel assembly type steel structure beam column joint and construction method thereof | |
| KR101912376B1 (en) | Plate truss girder and composite girder bridge using the same | |
| CN110878591A (en) | Girder and crossbeam connection structure of H shaped steel concrete | |
| CN112282412A (en) | Bolt welding hybrid reinforcement structure for open-hole beam | |
| KR102401560B1 (en) | Composite beam for long span construction and low story height | |
| CN218091267U (en) | Connection structure of reinforced concrete prefabricated column and reinforced concrete prefabricated beam | |
| CN214738765U (en) | Green building frame steel column supports connected node structure | |
| CN217461434U (en) | Combined magnesium alloy plane early-dismantling template | |
| CN220133267U (en) | Steel beam and one-sided fixedly connected node structure | |
| CN216007330U (en) | Steel reinforced concrete column and reinforced concrete cantilever beam connecting mechanism | |
| CN212129459U (en) | Combined connecting node structure of corner column and floor beam | |
| CN220644605U (en) | Connecting element installation node between steel-concrete composite structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |