A friction energy dissipation column with bidirectional deformation coordination and multi-stage operation

Abstract

The present invention provides a friction energy dissipation column with coordinated bidirectional deformation and multi-stage operation, comprising two cantilever-section I-shaped steel columns and an intermediate-section I-shaped steel column. The intermediate-section I-shaped steel column is located between the two cantilever-section I-shaped steel columns, and the intermediate-section I-shaped steel column and the two cantilever-section I-shaped steel columns are detachably connected via a pin connector and a friction energy dissipation component. The upper and lower webs of the friction energy dissipation column are connected to the frame beam via a connecting plate, and side flanges are provided with side braces. The present invention provides a friction energy dissipation column with coordinated bidirectional deformation and multi-stage operation, which has the advantages of being able to avoid out-of-plane damage to the upper and lower column sections, having no deformation concentration problems when working in-plane, being able to achieve energy dissipation in stages, and not affecting the use function of the building.

Description

Technical Field

[0001] The invention relates to the field of earthquake resistance of building structures, and in particular to a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation. Background Art

[0002] Energy dissipation and shock absorption technology refers to the installation of dampers in certain parts of the structure. Through reasonable design, the dampers are made to yield before the main structure, thereby absorbing the energy input into the structure by the earthquake and achieving an effective means of earthquake resistance to protect the main structure. Common types of dampers include: metal dampers, friction dampers, viscous dampers, viscoelastic dampers, etc. Their common arrangements in the structure include diagonal brace arrangement, herringbone arrangement, toggle arrangement, and pier arrangement, as follows: Figure 1 As shown in A, B, C, and D in the figure. Among these common arrangements, the pier type has the following advantages: 1) It has little impact on the use function of the building, and a certain amount of space is left on both sides of the substructure equipped with the damper to meet the requirements of door and window arrangement; 2) Compared with the diagonal brace type, herringbone type, and toggle type, its cost is low, which is conducive to promotion and application; 3) It has a wide range of applicability and can be used for installations including metal dampers, friction dampers, viscoelastic dampers, etc.

[0003] The pier-type connection saves building space and has a wide range of applications. It is of great significance to the use of buildings and will be an important direction for future practical engineering applications. However, at present, the design of pier-type dampers often only considers the force in the damper plane, but the actual earthquake action is bidirectional, and the damper itself not only deforms in the plane, but also deforms out of the plane. Figure 2 As shown in the figure, when the damper has sufficient out-of-plane stiffness, the damper mainly rotates as a rigid body, and the out-of-plane deformation mainly occurs on the pier and frame beam. When the out-of-plane stiffness of the damper is insufficient, the pier, damper and frame beam all undergo out-of-plane bending deformation. Regardless of whether the out-of-plane stiffness of the damper is sufficient, the pier will undergo out-of-plane deformation. When the out-of-plane deformation is too large, out-of-plane damage will occur, and the damper will exit work prematurely, making the energy dissipation function of the damper ineffective, which is not conducive to the effective performance of energy dissipation and shock absorption.

[0004] Metal dampers are often used as energy dissipation elements for pier-type dampers because of their high energy dissipation capacity, good durability, relatively low price, and convenient installation and replacement. It is worth noting that when a large inter-story displacement occurs, the metal damper will also undergo large bending or shear deformation, which will lead to obvious deformation concentration in the metal damper, resulting in excessive local stress, which is not conducive to the effective performance of its low-cycle fatigue performance.

[0005] Zhang Chao et al. proposed an adjustable energy dissipation prefabricated wall column (application number CN202110822197.7) including a prefabricated lower pier component, a prefabricated upper pier component, a damper component and a vertical adjustment component. However, this pier-type damper does not consider the adverse effects of out-of-plane deformation. The upper and lower piers are prone to out-of-plane bending failure. At the same time, the metal damper between the upper and lower piers is prone to concentrated deformation under large reciprocating displacement. Summary of the invention

[0006] In order to solve the problems of out-of-plane failure that easily occurs when the upper and lower piers of the pier-type damper are subjected to bidirectional force under actual earthquake action, and strain concentration occurs when using metal energy dissipation technology, the present invention proposes a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation, which can save building use space and effectively play the role of energy dissipation and shock absorption.

[0007] In order to achieve the purpose of the present invention, the present invention provides a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation, including a cantilever section I-shaped steel column, an intermediate section I-shaped steel column, a friction energy dissipation component and a pin shaft connector;

[0008] The middle section I-shaped steel column is located between the two cantilever section I-shaped steel columns, and the central axis of the two cantilever section I-shaped steel columns is aligned with the middle section I-shaped steel column;

[0009] Each of the cantilever section I-shaped steel columns and the middle section I-shaped steel columns are detachably connected via a friction energy dissipation component and a pin shaft connector;

[0010] The friction energy dissipation components are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column and the middle section I-shaped steel column.

[0011] Furthermore, the web of the I-shaped steel column of the upper cantilever section is connected to the frame beam through an upper connecting plate, the I-shaped steel column of the upper cantilever section and the upper connecting plate are both provided with corresponding circular holes, the I-shaped steel column of the upper cantilever section and the upper connecting plate are fastened and connected by bolts, and the web of the I-shaped steel column of the upper cantilever section and the web of the frame beam are located in the same plane;

[0012] The web of the I-shaped steel column of the lower cantilever section is connected to the frame bottom beam through a lower connecting plate, a circular hole is provided in the I-shaped steel column of the lower cantilever section, a vertical slot is provided in the lower connecting plate, the I-shaped steel column of the lower cantilever section is fastened to the lower connecting plate through bolts, and the web of the I-shaped steel column of the lower cantilever section and the web of the frame bottom beam are located in the same plane.

[0013] Furthermore, armpit braces are provided at the left and right side flanges of the two cantilever sections of the I-shaped steel columns.

[0014] Furthermore, the armpit support includes a triangular armpit plate, a first end plate and a second end plate, the first end plate is fastened to the frame beam flange, and the second end plate is fastened to the side flange of the I-shaped steel column of the cantilever section; the triangular armpit plate and the web of the I-shaped steel column of the cantilever section are located in the same plane; and a gap is provided between the first end plate and the second end plate at the right angle of the triangular armpit plate, and there is no contact between them.

[0015] Furthermore, a plurality of circular bolt holes are provided at the right flange and the web of the cantilever section I-shaped steel column, and the bolt holes at the right flange are symmetrically arranged on both sides of the web; oblong holes are provided at the right flange and the web of the middle section I-shaped steel column, and the oblong holes at the right flange are symmetrically arranged on both sides of the web, and the circular bolt holes and the oblong holes are used to install friction energy dissipation components.

[0016] Furthermore, the friction energy dissipation component includes a friction steel plate, a friction angle steel and a triangular stiffening rib. The friction steel plate is detachably connected to the right side of the right flange of the cantilever section I-shaped steel column and the right side of the right flange of the middle section I-shaped steel column. The friction angle steel is detachably connected to the right side flange of the I-shaped steel column and the right side flange of the middle section I-shaped steel column. The friction angle steel is also detachably connected to the web of the I-shaped steel column and the web of the middle section I-shaped steel column, and two friction angle steels are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column and the middle section I-shaped steel column.

[0017] Furthermore, a first friction plate is provided between the friction steel plate and the right side flange of the cantilever section I-shaped steel column and the right side flange of the middle section I-shaped steel column, and a second friction plate is provided between the friction angle steel and the right side flange of the cantilever section I-shaped steel column and the right side flange of the middle section I-shaped steel column; a low friction material is provided between the friction angle steel and the web of the cantilever section I-shaped steel column and the web of the middle section I-shaped steel column;

[0018] The upper and lower friction energy dissipation components of the friction energy dissipation column apply bolt pre-tightening force, and the bolt pre-tightening force applied by the friction energy dissipation component on the lower side is lower than the bolt pre-tightening force applied by the friction energy dissipation component on the upper side.

[0019] Furthermore, four triangular stiffening ribs are arranged on the friction angle steel, one side of two of the triangular stiffening ribs are respectively flush with the end faces of the I-shaped steel column of the cantilever section and the end faces of the I-shaped steel column of the middle section, and the other two triangular stiffening ribs are symmetrically arranged on both sides of the friction angle steel.

[0020] Furthermore, the pin connecting member includes two main ear plates, two auxiliary ear plates and a pin, the main ear plates are symmetrically welded on the left flange of the I-shaped steel column of the cantilever section, the auxiliary ear plates are symmetrically welded on the left flange of the I-shaped steel column of the middle section, the main ear plates and the auxiliary ear plates are connected by a pin, the two main ear plates are respectively located on the outside of the two auxiliary ear plates, and a gap is provided between each main ear plate and the auxiliary ear plate.

[0021] The present invention also provides a method for processing the aforementioned friction energy dissipation column with bidirectional deformation coordination and multi-stage operation, comprising the following steps:

[0022] Step 1. Connect one end of the I-shaped steel column of the cantilever section located at the top with one end of the I-shaped steel column of the middle section using a pin connector;

[0023] Step 2. Connect the other ends of the upper cantilever section I-shaped steel column and the middle section I-shaped steel column through a friction energy dissipation component;

[0024] Step 3. Connect the cantilever I-shaped steel column at the bottom with the middle I-shaped steel column according to the same process;

[0025] Step 4. Transport the connected friction energy dissipation column to the construction site, fix the upper connection plate to the end of the I-shaped steel column of the upper cantilever section, and fix the lower connection plate to the end of the I-shaped steel column of the lower cantilever section;

[0026] When additional arm braces are provided, the additional arm braces are respectively fixedly installed at the left and right side flanges of the I-shaped steel columns of the two cantilever sections.

[0027] Furthermore, before step 1, circular holes are opened at corresponding positions on the upper connecting plate, the I-shaped steel column of the cantilever section, the friction angle steel, and the friction steel plate, slotted holes are opened on the lower connecting plate, and oblong holes are opened on the middle section I-shaped steel column. Two main ear plates are welded to the flange of the I-shaped steel column of the cantilever section, and two auxiliary ear plates are welded to the flange of the I-shaped steel column of the middle section. The upper connecting plate with circular holes is welded to the lower flange of the frame beam, and the lower connecting plate with slotted holes is welded to the upper flange of the frame bottom beam.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) It can effectively reduce the deformation concentration problem caused by the use of metal shock absorption technology. Figure 3As shown in the figure, the pin connection between the cantilever column and the middle column is equivalent to an ideal hinge point. When the upper and lower floors have inter-story displacement, the relative translation displacement between the floors is converted into a rigid body angular deformation between the two cantilever columns and the middle column. One of the two fractures is deformed around the hinge point, and the other is deformed around the hinge point. Both the opening deformation and the closing deformation cause the middle column section and the friction plate to slide relative to each other, thereby frictionally dissipating the seismic energy. From the geometric relationship in the figure, it can be obtained that the relative sliding linear displacement caused by the angular deformation (θ is the relative rotation angle between column sections, h is the cross-sectional height of the I-shaped steel column, θh is the relative sliding line displacement, Δ is the translational displacement between floors, H is the total length of the energy dissipation column, and Hξ is the length of the middle section column) is much smaller than the translational displacement Δ between floors, which can effectively alleviate the strain concentration problem and improve the low-cycle fatigue performance of the damper.

[0030] (2) It can effectively avoid out-of-plane damage of the upper and lower column sections, ensuring the normal working performance of the damper in the plane. The upper and lower cantilever column sections are connected to the frame beam through connecting plates and axillary braces. The connecting plates, cantilever column webs and axillary braces are rigid in the plane of the frame, but have good bending deformation capacity and are flexible out of the plane. When the energy dissipation column is subjected to bidirectional horizontal earthquake action, its upper and lower connection nodes are rigidly connected in the plane, ensuring that the working mechanism in the plane can function normally (such as Figure 3 As shown in the figure); the upper and lower connection nodes are connected flexibly out of plane, that is, the out-of-plane deformation of the energy dissipation column is borne by the upper and lower connection plates, the web of the cantilever column section, and the triangular axil plate with axil brace. The out-of-plane deformation of the upper and lower cantilever column sections as a whole is very small. At the same time, the friction angle steel, triangular stiffening ribs and double-ear plate pin connection between the column sections make the fracture have a strong ability to resist out-of-plane deformation. There is no torsional deformation out of the plane between the three column sections. Therefore, the out-of-plane working mechanism of the energy dissipation column can be simplified as follows: Figure 4 The connection node shown is flexible out of plane, and the column section of the entire energy dissipation column basically does not bend and deform in the out-of-plane direction. This structure of flexible connection of the connection node out of plane and rigid connection in plane will avoid the possibility of out-of-plane damage of the upper and lower piers of the traditional pier-type damper, while ensuring the performance of the damper's in-plane working performance.

[0031] (3) The impact on the building's use function and building use space is very small. Compared with common damper arrangements such as diagonal bracing, herringbone, and elbow arrangements, the energy dissipation column proposed in the present invention occupies very little building space, and the remaining building space can be very conveniently used to open doors and windows, greatly reducing the impact of the support system on the functionality of the building. Moreover, in order to ensure that the piers of the pier-type damper are not damaged under the action of the ultimate damping force, it is often necessary to increase the cross-sectional height of the pier, resulting in it still occupying a larger building space. The cross-sectional height of the energy dissipation column proposed in the present invention is equivalent to that of the frame beam, and the building space occupied is smaller than that of the pier-type damper. At the same time, it can be dispersed in the structure to disperse the output of a single damper and reduce the adverse effects on the substructure.

[0032] (4) Multi-stage energy dissipation can be achieved. The friction plate material of the friction energy dissipation column can be selected from materials with strong wear resistance and stable friction performance, such as brass. In addition, the bolt preload applied by the friction energy dissipation component on the lower side is lower than the bolt preload applied by the friction energy dissipation component on the upper side. Through further reasonable design, it can be achieved that only the lower friction damper participates in energy dissipation in small earthquakes, and both the upper and lower friction energy dissipation components participate in energy dissipation in medium and large earthquakes, thereby achieving the purpose of multi-stage energy dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a diagram of the common connection form for setting dampers in beam-column bays;

[0034] Figure 2 is a schematic diagram of the out-of-plane deformation of the existing pier-type damper;

[0035] Figure 3 It is a schematic diagram of the structure-node deformation relationship in the plane of the friction energy dissipation column;

[0036] Figure 4 It is a simplified diagram of the out-of-plane deformation of the friction energy dissipation column;

[0037] Figure 5a It is a structural schematic diagram of a friction energy dissipation column provided by an embodiment of the present invention;

[0038] Figure 5b yes Figure 5a A partial enlarged view of

[0039] Figure 6 yes Figure 5b AA section view;

[0040] Figure 7 yes Figure 5b BB cross-section diagram;

[0041] Figure 8 It is a schematic diagram of the connection process between the upper cantilever section I-shaped steel column and the middle section I-shaped steel column;

[0042] Fig. 9 It is a schematic diagram of the connection process between the I-shaped steel column of the lower cantilever section and the I-shaped steel column of the middle section;

[0043] Fig.10 It is a schematic diagram of the connection process between the upper end of the friction energy dissipation column and the frame beam;

[0044] Fig.11 It is a schematic diagram of the connection process between the lower end of the friction energy dissipation column and the frame beam;

[0045] Fig.12 E is a schematic diagram of the armpit support structure of an embodiment of the present invention, F is a front view, and G is a side view;

[0046] Fig.13 Schematic diagram of openings in the upper connecting plate and the lower connecting plate;

[0047] Fig.14 It is a schematic diagram of the friction angle steel structure;

[0048] Fig.15 It is a schematic diagram of the connection node at the upper end of the friction energy dissipation column;

[0049] Fig.16 It is a schematic diagram of the connection node at the lower end of the friction energy dissipation column;

[0050] In the figure: 1-cantilever section I-shaped steel column; 2-middle section I-shaped steel column; 3-upper connecting plate; 4-lower connecting plate; 5-axillary support; 51-first end plate; 52-second end plate; 53-triangular axillary plate; 6-pin connecting piece; 61-main ear plate; 62-second ear plate; 63-pin; 7-friction energy dissipation component; 71-first friction plate; 72-second friction plate; 73-friction steel plate; 74-low friction material; 75-friction angle steel; 76-triangular stiffening rib; 8-frame beam. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Combination Figure 5a-Figure 9 To illustrate, a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation includes two cantilever section I-shaped steel columns 1, an intermediate section I-shaped steel column 2, two friction energy dissipation components 7, and two pin connectors 6; the intermediate section I-shaped steel column 2 is located between the two cantilever section I-shaped steel columns 1, and the central axes of the two cantilever section I-shaped steel columns 1 and the intermediate section I-shaped steel column 2 are aligned to facilitate the connection between the column sections; the cantilever section I-shaped steel column 1 and the intermediate section I-shaped steel column 2 are connected on the left side by a pin connector 6 containing two pairs of ear plates, and on the right side by a friction energy dissipation component 7; the friction energy dissipation components 7 are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column 1 and the intermediate section I-shaped steel column 2.

[0054] In some embodiments of the present invention, Figure 5b , Figure 9-11 , Fig.13 For explanation, the web of the I-shaped steel column 1 of the upper cantilever section is connected to the frame beam 8 at the top through the upper connecting plate 3, the upper connecting plate 3 is provided with mounting holes, and the web of the I-shaped steel column 1 of the upper cantilever section is provided with circular holes corresponding to the mounting holes on the upper connecting plate 3 to ensure that the two can be fastened and connected by bolts; the web of the I-shaped steel column 1 of the lower cantilever section is connected to the bottom beam of the frame through the lower connecting plate 4, and the web of the I-shaped steel column 1 of the lower cantilever section is provided with circular holes, and the lower connecting plate 4 is provided with vertical slots to adjust the spacing of the friction energy dissipation column during actual installation to ensure that it can be installed.

[0055] In some embodiments of the present invention, Figure 5a , Figure 5b , Fig.12 , Fig.15 , Fig.16To explain, in addition to the connecting plate, the connection between the upper and lower cantilever section I-shaped steel columns 1 and the frame beam is also provided with armpit braces 5 on the left and right side flanges of the cantilever section I-shaped steel columns 1. Each armpit brace 5 includes a triangular armpit plate 53, a first end plate 51 and a second end plate 52. During actual installation, the first end plate 51 is fastened to the flange of the frame beam 8 by bolts, and the second end plate 52 is fastened to the side flange of the cantilever section I-shaped steel column 1 by bolts; the triangular armpit plate 53 and the web of the cantilever section I-shaped steel column 1 and the web of the frame beam are all located in the same plane; the first end plate 51 and the second end plate 52 are provided with a certain gap at the right angle of the triangular armpit plate 53, and do not contact each other. With such arrangement, under the action of bidirectional earthquake, the bending resistance of the energy dissipation column in the out-of-plane direction is mainly provided by the web plate at the connection node of the cantilever section I-shaped steel column 1, the upper and lower connection plates 3, 4 and the triangular axilla plate 53. The out-of-plane moment of inertia of these three is very small relative to the in-plane moment of inertia. Therefore, the connection node in the out-of-plane direction is flexible and bears the bending deformation in the out-of-plane direction of the energy dissipation column, while it is rigid in the in-plane direction to ensure the working performance of the energy dissipation column.

[0056] In some embodiments of the present invention, Figure 5a , Figure 5b , Figure 8 , Fig. 9 For explanation, a plurality of circular bolt holes are opened on the right flange and web of the cantilever section I-shaped steel column 1, and the bolt holes at the flange are symmetrically arranged on both sides of the web; oblong holes are opened on the right flange and web of the middle section I-shaped steel column 2, and the oblong holes at the flange are symmetrically arranged on both sides of the web; circular holes are opened on the cantilever section I-shaped steel column 1 and oblong holes are opened on the middle section I-shaped steel column 2, so that when relative rotation occurs between the column sections, only the middle section I-shaped steel column 2 and the friction plate have relative sliding, thereby dissipating seismic energy.

[0057] In some embodiments of the present invention, Figure 5a , Figure 5b , Figure 6 , Figure 7 , Figure 8 , Fig. 9 For explanation, the friction energy dissipation component 7 includes a friction steel plate 73, two friction angle steels 75, and eight triangular stiffening ribs 76 respectively arranged on the two friction angle steels 75; the friction steel plate 73 is detachably connected to the right side of the right flange of the cantilever section I-shaped steel column 1 and the right side of the right flange of the middle section I-shaped steel column 2, and the two friction angle steels 75 are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column 1 and the middle section I-shaped steel column 2, and are fastened to the cantilever section I-shaped steel column 1 and the middle section I-shaped steel column 2 by bolts; a number of circular bolt holes are opened on the friction steel plate 73 and the friction angle steel 75, so as to connect the cantilever section I-shaped steel column 1 and the middle section I-shaped steel column 2 by bolts.

[0058] In some embodiments of the present invention, Figure 5b , Figure 6 , Figure 7 For explanation, a first friction plate 71 is provided between the friction steel plate 73 and the right side flange of the cantilever section I-shaped steel column 1 and the right side flange of the middle section I-shaped steel column 2, and a second friction plate 72 is provided between the friction angle steel 75 and the right side flange of the cantilever section I-shaped steel column 1 and the right side flange of the middle section I-shaped steel column 2. The materials of the first friction plate 71 and the second friction plate 72 can be made of brass or other materials with strong wear resistance and stable friction performance; at the same time, bolt pre-tightening force is applied to the upper and lower friction energy dissipation components 7 of the friction energy dissipation column, and the bolt pre-tightening force applied to the friction energy dissipation component 7 on the lower side is lower than the bolt pre-tightening force applied to the friction energy dissipation component 7 on the upper side; with such an arrangement, the friction energy dissipation component 7 on the lower side of the friction energy dissipation column can slide relative to each other and participate in friction energy dissipation under the action of a small earthquake, while the friction energy dissipation component 7 on the upper side does not slide relative to each other and does not participate in energy dissipation, while both of them participate in energy dissipation under the action of a large earthquake.

[0059] In some embodiments of the present invention, the first friction plate 71 and the second friction plate 72 on one side of the cantilever section I-shaped steel column 1 have circular holes, and the first friction plate 71 and the second friction plate 72 on one side of the middle section I-shaped steel column 2 have oblong holes.

[0060] A low friction material 74 is provided between the friction angle steel 75 and the web of the cantilever section I-shaped steel column 1 and the web of the middle section I-shaped steel column 2, so that the web side does not participate in the sliding friction energy consumption, and only the flange side participates in the friction energy consumption. In some embodiments of the present invention, the low friction material can be butyl rubber.

[0061] In some embodiments of the present invention, Figure 5b , Figure 6 , Figure 7 , Fig.14 To illustrate, four triangular stiffening ribs 76 are arranged on each friction angle steel 75, one side of two triangular stiffening ribs 76 is flush with the end face of the cantilever section I-shaped steel column 1 and the end face of the middle section I-shaped steel column 2, respectively, and the other two triangular stiffening ribs 76 are symmetrically arranged on both sides of the friction angle steel 75. Such an arrangement can ensure that when the friction energy dissipation column is subjected to out-of-plane force, there is no out-of-plane relative displacement between the column sections, and the out-of-plane direction is approximately a straight line, so that the out-of-plane force mechanism can be effectively exerted.

[0062] In some embodiments of the present invention, Figure 5b , Figure 6 , Figure 7To explain, the pin connector 6 includes two main ear plates 61, two auxiliary ear plates 62 and a pin 63. The main ear plates 61 are symmetrically welded on the left flange of the cantilever section I-shaped steel column 1, and the auxiliary ear plates 62 are symmetrically welded on the left flange of the middle section I-shaped steel column 2. The two main ear plates 61 are respectively located on the outside of the two auxiliary ear plates 62. The main ear plates 61 and the auxiliary ear plates 62 are connected by the pin 63, and an adapted installation gap is provided between each main ear plate 61 and the auxiliary ear plate 62. The double ear plates can limit the relative displacement out of the plane between the column sections.

[0063] Combination Figure 8-Figure 14 To illustrate, the present invention provides a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation, and its processing method is implemented according to the following steps:

[0064] Step 1. Align the holes of the two main ear plates 61 of the upper cantilever section I-shaped steel column 1 and the two auxiliary ear plates 62 of the middle section I-shaped steel column 2, with the two main ear plates 61 on the outside and the two auxiliary ear plates 62 on the inside, and then connect the two pairs of main ear plates 61 and auxiliary ear plates 62 with the pin shaft 63;

[0065] Step 2. Connect the upper cantilever section I-shaped steel column 1 and the right side of the middle section I-shaped steel column 2 through the friction energy dissipation component 7, specifically, place the second friction plate 72 according to the bolt holes and oblong holes of the cantilever section I-shaped steel column 1 and the middle section I-shaped steel column 2, and set low-friction material 74 at the webs of the two column sections, then place two friction angle steels 75, and finally place the second friction plate 72 and the friction steel plate 73, and fasten the connection by putting high-strength bolts at each hole position;

[0066] Step 3. Connect the lower cantilever section I-shaped steel column 1 and the middle section I-shaped steel column 2 according to the same process;

[0067] Step 4. Transport the connected friction energy dissipation column to the construction site, and fasten the web of the upper cantilever section I-shaped steel column 1 and the upper connecting plate 3 with high-strength bolts according to the principle of corresponding hole positions, and then fasten the first end plate 51 of the two side braces 5 with the frame beam flange and the second end plate 52 with the cantilever section I-shaped steel column 1 flange with high-strength bolts;

[0068] Step 5. Adjust the position of the I-shaped steel column 1 of the lower cantilever section so that it corresponds to the position of the slot hole of the lower connecting plate 4, and fasten the two together with high-strength bolts; then, according to the principle of corresponding hole positions, fasten the first end plate 51 of the two side braces 5 to the flange of the frame beam and the second end plate 52 to the flange of the I-shaped steel column 1 of the lower cantilever section with high-strength bolts.

[0069] Before step 1, circular holes are opened at corresponding positions on the upper connecting plate 3, the cantilever section I-shaped steel column 1, the friction angle steel 75, and the friction steel plate 73, a slot hole is opened on the lower connecting plate 4, and an oblong hole is opened on the middle section I-shaped steel column 2, and two main ear plates 61 are welded to the flange of the cantilever section I-shaped steel column 1, and two auxiliary ear plates 62 are welded to the flange of the middle section I-shaped steel column 2.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A friction energy dissipation column with bidirectional deformation coordination and multi-stage operation, characterized in that: It includes a cantilever section I-shaped steel column, a middle section I-shaped steel column, a friction energy dissipation component and a pin shaft connection piece; The middle section I-shaped steel column is located between the two cantilever section I-shaped steel columns, and the central axis of the two cantilever section I-shaped steel columns is aligned with the middle section I-shaped steel column; Each of the cantilever section I-shaped steel columns and the middle section I-shaped steel columns are detachably connected via a friction energy dissipation component and a pin shaft connector; The friction energy dissipation components are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column and the middle section I-shaped steel column.

2. A friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 1, characterized in that: The web of the I-shaped steel column of the upper cantilever section is connected to the top frame beam through an upper connecting plate, the I-shaped steel column of the upper cantilever section and the upper connecting plate are both provided with corresponding circular holes, the I-shaped steel column of the upper cantilever section and the upper connecting plate are fastened and connected by bolts, and the web of the I-shaped steel column of the upper cantilever section and the web of the top frame beam are located in the same plane; The web of the I-shaped steel column of the lower cantilever section is connected to the bottom frame beam through a lower connecting plate, a circular hole is provided in the I-shaped steel column of the lower cantilever section, a vertical slot is provided in the lower connecting plate, the I-shaped steel column of the lower cantilever section is fastened to the lower connecting plate through bolts, and the web of the I-shaped steel column of the lower cantilever section and the web of the bottom frame beam are located in the same plane.

3. A friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 2, characterized in that: The left and right flanges of the two cantilever sections of the I-shaped steel columns are both provided with side braces.

4. The friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 3 is characterized in that: The axil brace includes a triangular axil plate, a first end plate and a second end plate, wherein the first end plate is fastened to the flange of the frame beam, and the second end plate is fastened to the side flange of the I-shaped steel column of the cantilever section; the triangular axil plate and the web of the I-shaped steel column of the cantilever section are located in the same plane; and a gap is provided between the first end plate and the second end plate at the right angle of the triangular axil plate, so that they do not contact each other.

5. The friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 1 is characterized in that: The right side flange and web of the cantilever section I-shaped steel column are provided with a plurality of circular bolt holes, and the bolt holes at the right side flange are symmetrically arranged on both sides of the web; the right side flange and web of the middle section I-shaped steel column are provided with oblong holes, and the oblong holes at the right side flange are symmetrically arranged on both sides of the web, and the circular bolt holes and the oblong holes are used for installing friction energy dissipation components.

6. The friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 1 is characterized in that: The friction energy dissipation component includes a friction steel plate, a friction angle steel and a triangular stiffening rib. The friction steel plate is detachably connected to the right side of the right flange of the cantilever section I-shaped steel column and the right side of the right flange of the middle section I-shaped steel column. The friction angle steel is detachably connected to the right side flange of the cantilever section I-shaped steel column and the right side flange of the middle section I-shaped steel column. The friction angle steel is also detachably connected to the web of the cantilever section I-shaped steel column and the web of the middle section I-shaped steel column, and two friction angle steels are symmetrically arranged on both sides of the web of the cantilever section I-shaped steel column and the middle section I-shaped steel column.

7. The friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 6 is characterized in that: A first friction plate is provided between the friction steel plate and the right flange of the cantilever section I-shaped steel column and the right flange of the middle section I-shaped steel column, and a second friction plate is provided between the friction angle steel and the right flange of the cantilever section I-shaped steel column and the right flange of the middle section I-shaped steel column; a low friction material is provided between the friction angle steel and the web of the cantilever section I-shaped steel column and the web of the middle section I-shaped steel column; The upper and lower friction energy dissipation components of the friction energy dissipation column apply bolt pre-tightening force, and the bolt pre-tightening force applied by the friction energy dissipation component on the lower side is lower than the bolt pre-tightening force applied by the friction energy dissipation component on the upper side.

8. The friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to claim 6 is characterized in that: The friction angle steel is provided with four triangular stiffening ribs, one side of two of which is flush with the end surface of the cantilever section I-shaped steel column and the end surface of the middle section I-shaped steel column respectively, and the other two triangular stiffening ribs are symmetrically arranged on both sides of the friction angle steel.

9. A friction energy dissipation column with bidirectional deformation coordination and multi-stage operation according to any one of claims 1 to 8, characterized in that: The pin connection includes two main ear plates, two auxiliary ear plates and a pin. The main ear plates are symmetrically welded to the left flange of the I-shaped steel column of the cantilever section, and the auxiliary ear plates are symmetrically welded to the left flange of the I-shaped steel column of the middle section. The main ear plates and the auxiliary ear plates are connected by a pin. The two main ear plates are respectively located on the outside of the two auxiliary ear plates, and a gap is provided between each main ear plate and the auxiliary ear plate.

10. A method for processing a friction energy dissipation column with bidirectional deformation coordination and multi-stage operation as claimed in claim 3, characterized in that: The following steps are involved: Step 1. Connect one end of the I-shaped steel column of the cantilever section located at the top with one end of the I-shaped steel column of the middle section using a pin connector; Step 2. Connect the other ends of the upper cantilever section I-shaped steel column and the middle section I-shaped steel column through a friction energy dissipation component; Step 3. Connect the cantilever I-shaped steel column at the bottom with the middle I-shaped steel column according to the same process; Step 4. Transport the connected friction energy dissipation column to the construction site, fix the upper connection plate to the end of the I-shaped steel column of the upper cantilever section, and fix the lower connection plate to the end of the I-shaped steel column of the lower cantilever section; When additional arm braces are provided, the additional arm braces are respectively fixedly installed at the left and right side flanges of the I-shaped steel columns of the two cantilever sections.

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