CN222862509U - A modular buckling-restrained braced beam-column insertion connection node - Google Patents
A modular buckling-restrained braced beam-column insertion connection node Download PDFInfo
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- CN222862509U CN222862509U CN202421194668.XU CN202421194668U CN222862509U CN 222862509 U CN222862509 U CN 222862509U CN 202421194668 U CN202421194668 U CN 202421194668U CN 222862509 U CN222862509 U CN 222862509U
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Abstract
The utility model provides a modular buckling restrained brace beam column insertion type connecting node, belongs to the technical field of assembly type buildings, and solves the problems of low installation efficiency, high maintenance difficulty, low strength, low support energy consumption, poor stability outside a support surface and the like of the existing node when the existing brace is connected with a structural beam column. The steel-beam-type steel-reinforced concrete pile comprises an H-shaped steel column, an I-shaped steel beam, buckling restrained brace, a steel node prefabricated module connecting piece, a beam-column prefabricated module connecting piece, an anti-side steel plate, an H-shaped stiffening rib and an L-shaped stiffening rib, wherein the brace in the node is connected by adopting a high-strength bolt insertion mode, and the steel-beam-type steel-reinforced concrete pile has the advantages of convenience in construction, high installation efficiency and easiness in repairing after earthquake. The prefabricated steel module can increase the sector moment of inertia of the cross connecting section, so that the prefabricated steel module counteracts the load of the support in a linear balance mode, and the out-of-plane stability of the support is improved. Meanwhile, the connection length of the support is shortened, the energy consumption capability of the support is improved, and the problem of in-plane bending moment response caused by overlong connection sections is avoided.
Description
Technical Field
The utility model relates to the technical field of assembly type buildings, in particular to a modular buckling restrained brace beam column insertion type connecting node.
Background
In recent years, with the construction of domestic high-rise and super-high-rise buildings, the research and application of buckling restrained braces in high-earthquake-resistant fortification intensity areas also continuously increase in temperature. The buckling restrained brace has good energy consumption capability, and can increase the lateral rigidity of the structure. The support generates plastic deformation in the earthquake process, the control main body structure is basically in an elastic range, and the structure is prevented from being damaged. Through traditional wet installation support, the beam column of its structure needs a large amount of arrangement of reinforcement, and the reinforcing bar is liable to conflict with the installation of gusset core district, and the installation accuracy of gusset installation difficulty and support is low. The assembled steel structure has the advantages of strong earthquake resistance, high installation accuracy, high construction efficiency and high recycling rate. The assembled steel structure and the buckling restrained brace are combined with the advantage of energy consumption, and the assembled steel structure has good application prospect in practical engineering.
At present, the connection mode of the buckling restrained brace and the structure mainly comprises bolt connection, pin shaft connection, welding connection and the like. The pin shaft connection has higher installation precision requirement, poorer hysteresis performance under the action of earthquake, can not fully embody all energy consumption capability of the support, and has less application in practical engineering. The joint butt joint of welded connection is high in accuracy, high in construction difficulty, high in maintenance difficulty after earthquake and poor in torsion resistance. The rigidity of the welded joint is reduced, and the joint plate is easy to crack or the flange of the column end or the beam end is easy to crack locally under the action of reciprocating pulling and pressing of an earthquake. The problem of overlong bolt connection sections exists in the bolt connection mode, the overlong connection sections can lead to the reduction of energy consumption sections, and the energy consumption of supporting the energy consumption sections is reduced.
The modularized buckling restrained brace beam column insertion type connecting node is designed for solving the problems of low installation efficiency, high maintenance difficulty, low strength, low brace energy consumption, poor out-of-plane stability and the like of the existing brace nodes. The node can shorten the length of the connecting section and improve the energy consumption of the support under the same condition. Meanwhile, the components are in modularized design, so that the installation difficulty and the maintenance difficulty are reduced. The lateral surface of the node is added with the anti-side steel plate, so that the strength and the rigidity of the node are increased, the stability of the supporting connecting section is increased, and the energy consumption capability of the supporting is guaranteed to be fully exerted. The node meets the standard requirements of a strong node weak member and a strong column weak beam, so that the support fully plays the role of a first defense line, and the safety of the whole structure is improved.
Chinese application patent number 201711488465.6 discloses a prefabricated modularization buckling restrained brace bolt welding hybrid connection node, mainly including prefabricated steel module, buckling restrained brace, high strength bolt and connection welding seam. The steel mould is characterized in that the prefabricated steel mould is fixed on a structural column through a high-strength bolt and forms a cross-shaped groove, a supporting connecting section is connected with the groove through the high-strength bolt, and a connecting weld joint is arranged at the edge of the connection fit between the plugboard and the groove. Under the strong earthquake effect, the prefabricated steel modules, the structural columns and the supports adopted by the node have no effective and reliable connection relation, and the strength and the lateral resistance of the node are insufficient. The adoption of the embedding mode of the cross-shaped groove has the advantages that the fan-shaped moment of inertia I W of the connecting section is slightly improved, and the torsion resistance of the connecting section is not obviously improved. Meanwhile, the welding is easy to cause cracking of the connecting section, an initial bending moment can exist in multiple times of welding, the raw surface of the connection Duan Yifa is bent outside, and the energy consumption capability of the support is reduced.
Chinese application number 201110138642.4 discloses an end part local extension type buckling restrained brace-beam-column connecting node which comprises an I-shaped steel beam, an H-shaped steel column, a frame node plate, an end part local extension type node and a plurality of high-strength bolts. The structural form of the support needs to be welded for many times, is easily influenced by construction environment and welding process, and can cause uneven stress at the contact position of the end part of the support to generate fracture. Because the modeling of the support is peculiar, a specific template is required to be arranged for factory prefabrication, and the manufacturing cost of the support is improved.
Considering that the node connection is under the action of earthquake, the node plate is cracked and bent out of plane due to insufficient tensile strength and rigidity, the bearing capacity of the structural member is reduced, and the structural member is damaged. Meanwhile, the current situation that the support energy consumption is affected due to the stability of the support connecting section and the excessive energy consumption of the connecting section is designed, and the modular buckling restrained brace beam column insertion type connecting node is designed. The support is connected with the beam column by adopting an inserted high-strength bolt to connect the reserved hole of the support cross plate with the prefabricated steel mould, the high-strength bolt is used for fixing the reserved hole, meanwhile, anti-side steel plates are additionally arranged on two sides of the beam column, a U-shaped groove is reserved, and then the support and the prefabricated steel mould are integrally inserted into the U-shaped groove for locking. The load born by the structure is directly transmitted to the support through the prefabricated steel module, and the shorter connecting length enables the support to flex and consume more energy, so that the safety of the structure is improved.
The prefabricated steel module can increase the sector moment of inertia of the cross connecting section, so that the prefabricated steel module counteracts the load of the support in a linear balance mode, and the support is prevented from twisting and buckling. The anti-side steel plate is additionally arranged, so that the anti-side rigidity of the joint can be greatly increased, and the joint is prevented from being laterally displaced, so that the energy consumption of the support is improved. Meanwhile, the lateral connectivity of the beam, the column and the support connection is enhanced, the beam column and the support lateral penetration into a whole is realized, and the lateral bearing capacity of the beam column is improved. The inserted node has the advantages of convenience in construction and high installation efficiency. The components are fixed by high-strength bolts, and the device has the characteristics of easy replacement and support after earthquake and small structural damage.
Disclosure of utility model
According to the utility model, a plurality of factors are considered, the stress characteristics of the support and beam column connection nodes are combined, the modularized buckling restrained brace beam column insertion type connection node is provided, the node plate is replaced by a steel node prefabricated module connecting piece capable of enhancing the stability outside the support surface, the connection length of the support is shortened, the stability outside the support surface is increased, meanwhile, the anti-side steel plates are additionally arranged on the two sides of the support-beam-column, the butt joint installation is simple and convenient, and the anti-side capacity of the beam column is obviously improved. The node is assembled in a factory in a full prefabricated mode and is in butt joint in the field through plug-in. The mode has the characteristics of convenience in assembly, high installation efficiency and easiness in replacement after earthquake, and the manufacturing cost is effectively controlled. The length of the energy consumption section of the support is increased, the energy consumption capability of the support is improved, the damage to the structure and the performance degradation are reduced, and the support has higher practical application value.
In order to achieve the above effects, the present utility model adopts the following technical scheme:
A modularized buckling restrained brace beam column insertion type connecting node comprises an H-shaped steel column, an I-shaped steel beam, a buckling restrained brace, a steel node prefabricated module connecting piece, a beam-column prefabricated module connecting piece, an anti-side steel plate, an H-shaped stiffening rib, an L-shaped stiffening rib and a high-strength bolt. The I-shaped steel beam is fixed with the steel node prefabricated module connecting piece through the beam-column prefabricated module connecting piece, the anti-side steel plate is fixed with the beam-column prefabricated module connecting piece through eight groups of opposite penetrating bolts, and a U-shaped groove is formed between the beam columns. The steel node prefabricated module connecting piece is fixed with the buckling restrained brace connecting section through a high-strength bolt to form a buckling restrained brace module, and a support insertion type node is formed by the preset groove, the H-shaped steel column, the I-shaped steel beam and the anti-side steel plate.
Furthermore, an H-shaped stiffening rib is arranged between the flanges of the H-shaped steel column and is fixed with the H-shaped steel column and the steel node prefabricated module connecting piece through four groups of high-strength bolts. The anti-side steel plate is tightly attached to the H-shaped steel column, the upper edge of the anti-side steel plate is flush with the upper edge of the H-shaped stiffening rib, the lower edge of the anti-side steel plate is aligned with the lower flange of the I-shaped steel beam, and a U-shaped groove is formed between the beam columns.
Furthermore, the anti-side steel plate is a rectangular right angle plate with oblique sides at the left and right sides of the upper part, the oblique side inclination angle and the length of the rectangular right angle plate are attached to the side edges of the steel node prefabricated module connecting piece, and the length and the inclination angle of the oblique side are determined according to the inclination angle required by supporting.
Furthermore, the anti-side steel plate is provided with perforations corresponding to screw holes of the steel node prefabricated module connecting piece and the beam-column prefabricated module connecting piece.
Furthermore, the beam-column prefabricated module connecting piece is connected with the upper flange, the lower flange and the web plate of the I-shaped steel beam through high-strength bolts.
Furthermore, the beam-column prefabricated module connecting piece is a rectangular steel module, the bottom end of the beam-column prefabricated module connecting piece is sealed, and the beam-column prefabricated module connecting piece is integrally formed into a U-shaped groove. Each surface is reserved with a perforation, the upper perforation and the lower perforation are positioned in accordance with the left perforation and the right perforation, the upper perforation corresponds to the reserved perforation at the lower part of the steel node prefabricated module connecting piece, the upper flange of the I-steel is clamped up and down, the lower perforation corresponds to the upper perforation of the L-shaped stiffening rib, the lower flange of the I-steel is clamped up and down, one ends of the corresponding perforations at the left side and the right side are connected with an anti-side steel plate, and one section of the corresponding perforation is connected with a web plate of the I-steel.
Furthermore, an L-shaped stiffening rib under the beam is arranged between the I-shaped steel beam and the H-shaped steel column, the stiffening rib is provided with four triangular steel modules which are welded with the stiffening rib, and two sides of the stiffening rib are respectively fixed with the beam column by adopting four groups of high-strength bolts.
Further, the steel node prefabricated module connecting piece comprises a first steel node prefabricated module connecting piece, a second steel node prefabricated module connecting piece, a third steel node prefabricated module connecting piece and a fourth steel node prefabricated module connecting piece, and the single steel node prefabricated module connecting piece is divided into a connecting section and a fixing section. The sizes of the connecting sections are consistent, and particularly the positions of the holes of the connecting sections and the fixed sections are different.
Further, the steel node prefabricated module connector determines the size and inclination of each module based on the inclination angle required by the support.
Furthermore, the connecting sections of the four steel node prefabricated module connecting pieces are clamped by the cross-shaped support connecting sections through the L-shaped edges on one side, and the high-strength bolts are adopted to fix the reserved holes in the penetrating members, so that the buckling restrained brace module is formed.
In summary, the above node connection can achieve the following advantages:
(1) According to the utility model, the inserted mounting support is adopted, and the anti-side steel plates are arranged between the beams and the columns to restrain the nodes and the beams and the columns, so that the bearing capacity of the nodes can be improved, the out-of-plane rigidity of the nodes can be increased, the ductility of beam and column components can be improved, the energy consumption capability of the support can be fully exerted, and the problems of premature buckling of the support, torsion of the components and the like caused by local damage of the nodes can be effectively prevented.
(2) The reinforcing ribs are arranged at the joints of the nodes, so that the bearing capacity and the ductility of the components are improved, the standard requirements of strong-node weak components and strong-column weak beams are met, the support fully plays the role of a first defense line, and the safety performance of the whole structure is improved.
(3) The steel node prefabricated module connecting piece is connected through the high-strength bolt, under the same condition, the half high-strength bolt connecting length is shortened, the energy consumption capacity of the support is greatly improved, the problem of in-plane bending moment response caused by overlong connecting sections is avoided, meanwhile, the fan-shaped moment of inertia I w of the cross-shaped cross section is increased, and the torsion resistance of the support cross section is further improved.
(4) The node structure is convenient to install and detach, the recycling rate and the assembly degree of the whole node are high, all accessories can be prefabricated and processed in factories, the precision is reliable, the assembly is convenient, the node is in a bolt connection mode, replacement and repair of the support after earthquake are facilitated, the manufacturing cost is high due to the fact that a structural system is integrally removed due to replacement and repair is effectively reduced, construction and installation problems and welding process problems caused by repeated welding are avoided, the position which is fixed in the plug-in installation process does not need to be supported for a long time, and the construction difficulty is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.
FIG. 1 is a schematic diagram of a node configuration provided by the present utility model;
FIG. 2 is a schematic view of the beam column installation process of the present utility model;
FIG. 3 is a schematic diagram of a connection of a support module according to the present utility model;
FIG. 4 is a schematic illustration of the connection between a support module and a beam column according to the present utility model;
FIG. 5 is a schematic view of an assembled beam column module connector according to the present utility model;
FIG. 6 is a schematic view of a steel node prefabricated module connector construction according to the present utility model;
FIG. 7 is a schematic view of a beam column precast module connector construction according to the present utility model;
the drawing shows a 1-H-shaped steel column, a 2-I-shaped steel beam, a 3-buckling restrained brace, a 4-steel node prefabricated module connecting piece, a 401-first steel node prefabricated module connecting piece, a 402-second steel node prefabricated module connecting piece, a 403-third steel node prefabricated module connecting piece, a 404-fourth steel node prefabricated module connecting piece, a 5-beam-column prefabricated module connecting piece, a 6-anti-side steel plate, a 7-H-shaped stiffening rib, an 8-L-shaped stiffening rib and a 9-high-strength bolt.
Detailed Description
The present utility model will be described in further detail below with reference to the drawings and embodiments in order to understand the objects, technical solutions and advantages of the present utility model. The specific embodiments described herein are to be considered in an illustrative rather than a restrictive sense.
In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Referring to fig. 1 and 2, a modular buckling restrained brace beam-column insertion type connection node includes an H-shaped steel column 1, an i-beam 2, a buckling restrained brace 3, a steel node prefabricated module connector 4, a beam-column prefabricated module connector 5, an anti-side steel plate 6, an H-shaped stiffening rib 7, an L-shaped stiffening rib 8 and a high-strength bolt 9, wherein the steel node prefabricated module connector 4 is composed of a first steel node prefabricated module connector 401, a second steel node prefabricated module connector 402, a third steel node prefabricated module connector 403 and a fourth steel node prefabricated module connector 404.
As shown in fig. 1 and 2, a plurality of bolt holes are arranged in the middle of the H-shaped steel column 1, correspond to the bolt holes at the bottom of the beam-column prefabricated module connecting piece 5 and the H-shaped stiffening ribs 7, and are fixed by high-strength bolts 9. The two side beams and the column prefabricated module connecting pieces 6 of the web plate of the I-beam 2 clamp and fix the two side beams and the column prefabricated module connecting pieces, wherein the flanges of the I-beam 2 are provided with a plurality of bolt holes, correspond to the holes of the beam and column prefabricated module connecting pieces 5 and the L-shaped stiffening ribs 8, and clamp and fix the flanges. The anti-side steel plates 6 on the two sides are fixed with beam-column prefabricated module connecting pieces 5 connected with the two sides of the column, and meanwhile, the anti-side steel plates, the H-shaped steel column 1 and the I-shaped steel beam 2 form a U-shaped inserted node.
Under this structure, guaranteed the support strength and the anti side rigidity of connected node, simultaneously because beam-column prefabrication module connecting piece 5 adopts U type recess rectangular tube, increased the effective connection area between H type steel column 1, the I-steel girder 2, avoid the beam-end edge of a wing to take place buckling under the seismic action. And meanwhile, the high-strength bolts 9 are adopted to fix the whole body, so that the phenomenon that the column is damaged before the beam at the node can be effectively avoided. Meanwhile, the lower part of the beam column joint is provided with the L-shaped stiffening rib 8, and four triangular plates are uniformly arranged at the middle part of the beam column joint, so that the joint strength of the joint under the extreme reciprocating action can be increased.
The anti-side steel plate 6 is a rectangular steel plate with the upper angle cut off based on the supporting inclination angle, and the left-right symmetrical holes respectively correspond to the through holes of the steel node prefabricated module connecting piece 4 and the beam-column prefabricated module connecting piece 5. The upper parts of the H-shaped steel beams are flush with the beam column prefabricated module connecting pieces 403 or 404 and the upper parts of the H-shaped stiffening ribs 7, and are tightly attached to the H-shaped steel columns 1 and the I-shaped steel beams 2, so that the lateral rigidity of the node is enhanced.
As shown in fig. 3 and 4, two bolt holes are formed in each branch section of the cross-shaped connecting section of the buckling restrained brace 3, and the support connecting section is fixed with the L-shaped right-angle side of the steel node prefabricated module connecting piece 4. The first steel node prefabricated module connecting piece 401, the second steel node prefabricated module connecting piece 402, the third steel node prefabricated module connecting piece 403 and the fourth steel node prefabricated module connecting piece 404 clamp the connecting section, and meanwhile the connecting section is penetrated and fixed by the high-strength bolts 9. In addition, the first steel node prefabricated module connecting piece 401 and the second steel node prefabricated module connecting piece 402 respectively clamp the flange of the I-shaped steel beam 2 with the beam-column prefabricated module connecting piece 5 and are connected and fixed in a penetrating manner by the high-strength bolts 9, and the third steel node prefabricated module connecting piece 403 and the fourth steel node prefabricated module connecting piece 404 respectively clamp the flange of the H-shaped steel column 1 with the H-shaped stiffening rib 7 and are fixed in a penetrating manner by the high-strength bolts 9, so that the strength at the node can be effectively enhanced.
The prefabricated modular connection 4 of the steel node is prefabricated and assembled in a factory, so that the machining precision and the butt joint precision of the support and the connection piece can be ensured, and compared with the traditional mode of butting the support and the connection plate on the upper part of the support and connection plate to cover the splice plate, the length of the bolt connection is shortened by nearly half. Traditionally, the load applied to the support will be transferred along the splice to the node, with the splice fracture easily occurring under fatigue loading. According to the utility model, the supporting load is directly dispersed on each prefabricated module connecting piece, so that the supporting load is transferred to the integral structure, and the node stability and the supporting energy consumption capacity are improved.
As shown in fig. 5, the i-beam 2 is symmetrically arranged in a left-right direction with beam-column prefabricated module connectors 5. The upper part, the lower part and the side close to the web plate of the beam-column prefabricated module connecting piece 5 are connected by high-strength bolts 9. Compared with the traditional angle steel connection, the connection strength of the node is greatly increased. In the force transmission mode, the beam flange of the node connection area transmits force to the connection piece and then turns to the column and the stiffening rib under the beam, and meanwhile, the beam end is effectively and plastically hinged to move outwards, so that the web of the node connection area is prevented from being damaged or even destroyed.
As shown in fig. 6 and 7, the steel node prefabricated module connecting piece 4 is formed by splicing two rectangular plates and two rectangular plates with one cut-off corner, and each plate is provided with two bolt holes. The beam-column prefabricated module connecting piece 5 is a rectangular bottom sealing steel module, the side faces are respectively connected with the beam and the anti-side steel plate 6, the upper part and the lower part are connected with the beam flange, and the bottom is fixed with the column. After the damage occurs, the main stress component is easy to replace, the utilization rate of the main stress component is improved, and the material is saved.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421194668.XU CN222862509U (en) | 2024-05-29 | 2024-05-29 | A modular buckling-restrained braced beam-column insertion connection node |
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| CN202421194668.XU CN222862509U (en) | 2024-05-29 | 2024-05-29 | A modular buckling-restrained braced beam-column insertion connection node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121630015A (en) * | 2026-02-04 | 2026-03-10 | 兰州理工大学 | A connection node for edge columns based on a modular box-type steel beam-column structure |
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2024
- 2024-05-29 CN CN202421194668.XU patent/CN222862509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121630015A (en) * | 2026-02-04 | 2026-03-10 | 兰州理工大学 | A connection node for edge columns based on a modular box-type steel beam-column structure |
| CN121630015B (en) * | 2026-02-04 | 2026-04-17 | 兰州理工大学 | Connection node based on modularization box steel beam column structure limit post |
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