CN112240056A

CN112240056A - Steel pipe bundle buckling constraint component and energy dissipation node

Info

Publication number: CN112240056A
Application number: CN202011223083.2A
Authority: CN
Inventors: 张立平
Original assignee: CCCC FHDI Engineering Co Ltd
Current assignee: CCCC FHDI Engineering Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-01-19

Abstract

The invention relates to a steel tube bundle buckling constraint component and an energy consumption node, which comprise: the buckling constraint unit components are arranged side by side and matched to form a beam-shaped structure, each buckling constraint unit component comprises a buckling energy dissipation part and a constraint part sleeved outside the buckling energy dissipation part, and two ends of the buckling energy dissipation part respectively correspondingly extend out of two ends of the constraint part to form a first connection section and a second connection section; and the first mounting plate group is connected with the first connecting section, and the second mounting plate group is connected with the second connecting section. The buckling constraint unit component of the beam shape in the middle section of the application has uniform size in all directions, eliminates the rigidity and stability difference in different directions, has high local stable bearing capacity and integral buckling-restrained capacity, has high working reliability under large axial compressive strain and strong earthquake, can realize micro and miniaturized structures, occupies small space, is convenient to install, and is suitable for engineering shock absorption and reinforcement.

Description

Steel pipe bundle buckling constraint component and energy dissipation node

Technical Field

The invention relates to the technical field of structural engineering, in particular to a steel pipe bundle buckling constraint component and an energy consumption node.

Background

The traditional support steel component can yield and dissipate energy when being pulled, but can be buckled and unstable when being pressed, the bearing capacity under the pressure is low, the energy dissipation can not be yielded, and the anti-seismic performance is poor. The buckling restrained component is an axial stressed component which can not generate buckling instability under the condition of being pressed, and the buckling restrained component is provided with a restrained part around the main stressed part, so that the main stressed part can not generate buckling instability under the condition of being pressed, and the full-section plastic yield is achieved. Under the reciprocating action of a horizontal earthquake, the main stress part of the buckling constraint component can yield when the axis is pulled and can also yield when the axis is pressed, so that the energy input into the engineering structure by the earthquake is effectively consumed, the horizontal lateral displacement deformation of the engineering structure is reduced, and the effects of effectively absorbing the shock and preventing the disaster are achieved.

Generally, the main force-bearing component is generally divided axially into an energy-dissipating section, a transition section and a mounting section. The energy dissipation section is a section with a whole section yielding under the action of axial tension and pressure, and the common section is mostly a rectangular, cross-shaped, I-shaped and other thin-wall sections. The mounting section is a section connecting the support and the engineering structure, the stress of the mounting section is in an elastic stage, the mounting sections are arranged at two ends of the support and used for connecting the support and the engineering structure, the mounting sections mainly bear axial force and transmit the axial force to the energy dissipation section, and the mounting sections are hinged as far as possible to reduce the action of bending moment and prevent the energy dissipation section from being eccentrically stressed. The conversion section is a transition before the energy dissipation section is connected with the engineering structure, and the conversion section is not only prevented from yielding like the energy dissipation section, but also prevented from buckling and instability, and is converted to the installation section to be separated from constraint.

The existing buckling restrained component mostly adopts a thin-wall steel plate as an energy dissipation section, the size, rigidity and stability of the thin-wall steel plate in the thickness direction and the orthogonal direction are greatly different, so that the restraint structure is complex, the restraint reliability is not easy to guarantee, local high-order buckling instability is easy to occur when the axial dynamic compressive strain is large, and the energy dissipation performance cannot be guaranteed; on the other hand, the thin-wall steel plate is used as a core energy dissipation component, and an external part for restraining the buckling of the thin-wall steel plate is large in section, occupies a large space and limits the application range of the thin-wall steel plate.

Disclosure of Invention

Based on this, it is necessary to provide a steel tube bundle buckling restrained component and an energy consumption node, and the purpose is to solve the problems that the prior art is poor in restraint reliability, poor in buckling resistance, incapable of ensuring energy consumption performance, large in occupied space and limited in application range.

In one aspect, the present application provides a steel tube bundle buckling constraint member, which includes:

the buckling constraint unit components are arranged side by side and matched to form a beam-shaped structure, the buckling constraint unit components are regularly arranged, each buckling constraint unit component comprises a buckling energy dissipation part located inside and a constraint part sleeved outside the buckling energy dissipation part, and two ends of each buckling energy dissipation part correspondingly extend out of two ends of the corresponding constraint part to form a first connection section and a second connection section; and

the first mounting plate group is connected with the first connecting section, and the second mounting plate group is connected with the second connecting section.

The steel pipe bundle buckling restrained component is formed by arranging at least two buckling restrained unit components in a bundle shape side by side, and the at least two buckling restrained unit components are regularly arranged; each buckling constraint unit component comprises a buckling energy dissipation part and a constraint part, wherein the buckling energy dissipation part is located inside the buckling energy dissipation part, the constraint part is sleeved outside the buckling energy dissipation part, a first connecting section and a second connecting section can be formed by extending two ends of the buckling energy dissipation part out of two ends of the constraint part respectively, so that the first connecting section can be fixedly connected with the first installation plate group during installation, the second connecting section can be fixedly connected with the second installation plate group, and finally the first installation plate group and the second installation plate group are assembled and fixed on an engineering structure. Compared with the buckling constraint component of the existing thin-wall steel plate structure, the buckling constraint unit component of the middle section in the scheme has the advantages that the sizes of all directions are uniform, the rigidity and stability differences in different directions are eliminated, the local stable bearing capacity and the whole buckling-restrained capacity are high, the working reliability under large axial compressive strain and strong earthquake is high, a micro and small structure can be realized, the occupied space is small, the installation is convenient, and the buckling constraint component is suitable for engineering shock absorption and reinforcement.

The technical solution of the present application is further described below:

in one embodiment, the buckling energy dissipation member is provided as a solid mild steel bar; the restraint member is a steel tube.

In one embodiment, an annular safety gap is formed between the outer peripheral wall of the solid low-carbon steel rod and the inner pipe wall of the steel pipe at a spacing mode.

In one embodiment, any two adjacent steel pipes are arranged at intervals.

In one embodiment, any two adjacent steel pipes are connected by welding.

In one embodiment, the steel tube bundle buckling-restraining member further comprises a hoop set, and the hoop set is sleeved outside all the steel tubes at the outermost layer.

In one embodiment, each of the first mounting plate group and the second mounting plate group includes a mounting gusset plate, and the first connecting section and the second connecting section are respectively fixedly connected to the corresponding mounting gusset plate.

In one embodiment, the mounting gusset defines a plurality of mounting holes arranged in an array.

In one embodiment, each of the first and second mounting plate groups includes a conversion node plate and a mounting node plate, the first and second connection sections are respectively connected to the corresponding conversion node plates vertically, and the conversion node plates are connected to the mounting node plates vertically; the installation node plate is provided with a plurality of installation holes which are arranged in an array mode.

In addition, the application also provides an energy consumption node, which comprises the steel pipe bundle buckling restraining component.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an energy consumption node according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a steel tube bundle buckling-restrained component according to an embodiment in FIG. 1;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

FIG. 4 is a schematic structural view of a steel tube bundle buckling constraint component according to another embodiment of FIG. 1;

FIG. 5 is a sectional view taken along line B-B in FIG. 4;

fig. 6 is a sectional view at C-C in fig. 4.

Description of reference numerals:

100. energy consumption nodes; 10. a steel column; 11. steel corbels; 20. a steel beam; 30. a gusset plate; 40. a steel tube bundle buckling restrained member; 41. a buckling-restraining unit member; 411. buckling the energy dissipation member; 412. a restraint; 413. a first connection section; 414. a second connection section; 42. a first mounting plate group; 43. a second mounting plate group; 44. a mounting gap; 45. installing a gusset plate; 46. and converting the node board.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1, the embodiment of the present application provides an energy dissipation node 100, which includes a steel column 10 extending vertically, a steel beam 20 extending horizontally, and a steel tube bundle buckling restraining member 40 connected between the steel column 10 and the steel beam 20. The energy consumption node 100 not only can realize the rigid connection effect of the beam column connected by the full bolts on site, but also has excellent buckling energy consumption capacity and excellent shockproof and anti-seismic performance.

Specifically, the steel column 10 is provided with a steel bracket 11 protruding laterally, the steel bracket 11 is spaced apart from the steel beam 20, and a node plate 30 is disposed therebetween, and the node plate may be a steel plate, for example. The gusset plate 30 is in bolt connection with the steel beam 20 through a rigid bolt, and the gusset plate 30 is in bolt connection with the steel bracket 11 through a high-strength bolt, so that the connection strength and the reliability are guaranteed.

In addition, in this energy dissipation node 100, the steel-pipe bundle buckling-restraining members 40 are provided in two and are respectively disposed on the upper and lower sides of the junction of the steel beam 20 and the steel corbel 11. The two steel pipe bundle buckling restrained components 40 are respectively fastened and connected with the steel beam 20 and the steel bracket 11 through bolt components, and therefore the full-bolt rigid connection structure is achieved. The connecting mode has the advantages of simple structure, convenient assembly and disassembly, and high connecting strength and rigidity.

With continued reference to fig. 2 and 4, a steel tube bundle buckling constraint component 40 is shown for the embodiment of the present application, which includes: at least two buckling-restraining unit members 41, a first mounting plate group 42 and a second mounting plate group 43.

At least two buckling-restraining unit members 41 are arranged side by side to form a bundle-like structure, and at least two buckling-restraining unit members 41 are regularly arranged, for example, in the embodiment, the number of the buckling-restraining unit members 41 is seven, six of the buckling-restraining unit members are arranged in a hexagon, and the seventh buckling-restraining unit member is arranged in the center of the hexagon. Each buckling constraint unit component 41 comprises a buckling energy dissipation member 411 positioned inside and a constraint member 412 sleeved outside the buckling energy dissipation member 411, wherein two ends of the buckling energy dissipation member 411 respectively correspondingly extend out of two ends of the constraint member 412 to form a first connection section 413 and a second connection section 414; the first mounting plate group 42 is connected to the first connection segment 413, and the second mounting plate group 43 is connected to the second connection segment 414.

In summary, the following advantages will be achieved by implementing the technical scheme of the embodiment: the steel pipe bundle buckling restrained component 40 in the above scheme is formed by arranging at least two buckling restrained unit components 41 in a bundle shape side by side, and the at least two buckling restrained unit components 41 are regularly arranged; each buckling-restrained unit component 41 comprises an internal buckling energy dissipation member 411 and a restraining member 412 sleeved outside the buckling energy dissipation member 411, and because two ends of the buckling energy dissipation member 411 respectively extend out of two ends of the restraining member 412, a first connecting section 413 and a second connecting section 414 can be formed, so that the first connecting section 413 can be fixedly connected with the first mounting plate group 42 during installation, the second connecting section 414 can be fixedly connected with the second mounting plate group 43, and finally the first mounting plate group 42 and the second mounting plate group 43 are assembled and fixed on an engineering structure. Compared with the buckling constraint component of the existing thin-wall steel plate structure, the buckling constraint unit component 41 in the middle section in the scheme has the advantages that the size of each direction is uniform, the rigidity and stability difference in different directions is eliminated, the local stable bearing capacity and the whole buckling-restrained capacity are high, the working reliability under large axial compressive strain and strong earthquake is high, the micro and small structure can be realized, the occupied space is small, the installation is convenient, and the buckling constraint component is suitable for engineering shock absorption and reinforcement.

With continued reference to fig. 3 and fig. 5, in the present embodiment, the buckling energy dissipation member 411 is configured as a solid mild steel rod; the restraint 412 is provided as a steel tube. The solid low-carbon steel rod and the steel pipe are sleeved to form an energy dissipation section which serves as a core component of the steel pipe bundle buckling restraining component 40, the cross section of the solid low-carbon steel rod and the steel pipe is uniform in size in all directions, the rigidity and stability difference in different directions can be effectively eliminated, and the local stable bearing capacity and the overall buckling prevention capacity are high. And the solid low-carbon steel bar is small in section size after being sleeved with the steel pipe, so that the occupied installation space is small, the miniaturization and even miniaturization design of the steel pipe bundle buckling restraining component 40 can be realized, and the application range of the steel pipe bundle buckling restraining component is greatly expanded. The steel pipe restrains the overall stability of the solid low-carbon steel bar.

It should be understood that, in other embodiments, the buckling energy consuming element 411 may be a cylindrical component made of other structural shapes and materials, and the constraining element 412 may be an annular component made of other structural shapes and materials.

Further, an annular safety gap 44 is formed between the outer peripheral wall of the solid low carbon steel rod and the inner pipe wall of the steel pipe at an interval. Because the steel pipe is used as the restraint member 412, the main function of the steel pipe is to prevent buckling instability of the main stressed part (namely, the solid low-carbon steel bar), and the steel pipe is mostly arranged at the periphery of the main stressed part. Because the annular safety gap 44 is formed between the solid low-carbon steel bar and the steel pipe, namely the solid low-carbon steel bar is not in contact with the steel pipe, the solid low-carbon steel bar is prevented from transmitting axial force to the steel pipe through bonding, friction or mechanical action, and the buckling energy consumption of the solid low-carbon steel bar is ensured while the steel pipe is not buckled.

With reference to fig. 2 and 4, in each steel pipe arranged in a bundle, there may be two connection manners, one of which is that any two adjacent steel pipes are arranged at an interval, according to actual needs. That is, the steel pipes are in contact with each other to prevent the vibration impact force from being transmitted between different steel pipes in the radial direction. And any two adjacent steel pipes are connected by welding. At this time, the buckling restrained elements 41 can be connected to form a whole, so that the steel tube bundle buckling restrained element 40 has better integrity and higher overall structural strength and rigidity.

Of course, in addition to the steel pipes being connected and fixed to each other by welding, in other embodiments, the steel pipe bundle buckling constraint component 40 further includes a hoop set (not shown) that is sleeved outside all the steel pipes at the outermost layer. In this way, the hoop kit can also sleeve the buckling-restraining unit members 41 as a whole, so that the steel-pipe-bundle buckling-restraining member 40 has good integrity and structural mechanical properties.

In addition, in order to reduce the design and manufacturing cost, the structural composition, shape and other parameters of the first mounting plate group 42 and the second mounting plate group 43 are identical. For example, in some embodiments, the first mounting plate group 42 and the second mounting plate group 43 each include a mounting node plate 45, and the first connecting section 413 and the second connecting section 414 are respectively connected and fixed with the corresponding mounting node plate 45. Preferably, the first connection section 413 and the second connection section 414 are both welded and fixed to the corresponding installation node plate 45, wherein the installation node plate 45 is a rectangular plate, and the length direction of the installation node plate 45 is parallel to the axial direction of the solid mild steel rod, so that the first connection section 413 and the second connection section 414 can obtain a larger connection area with the corresponding installation node plate 45, thereby improving the welding strength.

Further, on the basis of the above embodiment, the mounting gusset plate 45 is provided with a plurality of mounting holes arranged in an array. The gusset plate 45 is installed so as to be able to be screwed with the steel beam 20 and the steel bracket 11 by bolts. And set up a plurality of mounting holes simultaneously and can improve spiro union point location quantity greatly to promote joint strength and reliability, and alleviate the atress of single bolt, avoid the bolt to break.

With continued reference to fig. 4 to 6, or in other embodiments, each of the first mounting plate group 42 and the second mounting plate group 43 includes a conversion node plate 46 and a mounting node plate 45, the first connecting section 413 and the second connecting section 414 are respectively connected to the corresponding conversion node plate 46 perpendicularly, and the conversion node plate 46 is connected to the mounting node plate 45 perpendicularly; the mounting gusset plate 45 is provided with a plurality of mounting holes arranged in an array.

The difference from the embodiment that only the installation gusset plate 45 is adopted is that a conversion gusset plate 46 is additionally arranged in the embodiment, the conversion gusset plate 46 is welded with the end part of the solid mild steel bar and then is welded with the end surface of the installation gusset plate 45, and at the moment, the conversion gusset plate 46 and the installation gusset plate 45 form an L-shaped structural arrangement. The technical effects obtained are the same as those of the above embodiments, and are not described herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A steel pipe bundle buckling restrained component characterized by comprising:

2. The steel tube bundle buckling-restrained component according to claim 1, wherein the buckling energy dissipation member is provided as a solid mild steel bar; the restraint member is a steel tube.

3. The steel tube bundle buckling restrained member of claim 2, wherein an annular safety gap is formed between the outer peripheral wall of the solid mild steel rod and the inner tube wall of the steel tube at a spacing.

4. The steel-pipe bundle buckling-restrained component according to claim 2, wherein any two adjacent steel pipes are arranged at an interval.

5. The steel tube bundle buckling-restrained member according to claim 2, wherein any two adjacent steel tubes are connected by welding.

6. The steel tube bundle buckling-restraining member according to claim 2, further comprising a hoop set that is fitted to the outside of all the steel tubes at the outermost layer.

7. The steel tube bundle buckling-restrained member according to any one of claims 1 to 6, wherein the first and second mounting plate groups each include a mounting gusset plate, and the first and second connection sections are respectively fixedly connected with the corresponding mounting gusset plates.

8. The steel tube bundle buckling restrained member according to claim 7, wherein the mounting gusset plate is provided with a plurality of mounting holes arranged in an array.

9. The steel tube bundle buckling constraint component of any one of claims 1 to 6, wherein the first and second mounting plate groups each comprise a conversion node plate and a mounting node plate, the first and second connection sections are respectively vertically connected with the corresponding conversion node plates, and the conversion node plates are vertically connected with the mounting node plates; the installation node plate is provided with a plurality of installation holes which are arranged in an array mode.

10. An energy dissipating node comprising the steel tube bundle buckling-restrained component as claimed in any one of claims 1 to 9.