Restorable column base structure and building thereof

Abstract

The present invention provides a recoverable column base structure and a building thereof. The recoverable column base structure includes an energy-dissipating sleeve for connecting upper and lower adjacent steel columns, and dissipating energy when the upper and lower steel columns undergo relative displacement. The energy-dissipating sleeve includes an upper connecting member, a lower connecting member, and an energy-dissipating plate. The upper connecting member is used to connect to the upper steel column. The lower connecting member is used to connect to the lower steel column. The two ends of the energy-dissipating plate are respectively connected to the upper connecting member and the lower connecting member. When the upper and lower steel columns undergo relative displacement, the energy-dissipating plate undergoes plastic deformation and dissipates energy. The present invention realizes the functional recoverability of closed-section steel column bases, does not occupy the usable space of the building, does not affect its usable function, and realizes efficient assembly construction of the column base. In terms of force, it can realize both functional recoverability and energy dissipation, and can also achieve good performance of small-seismic rigid column bases.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structures, in particular to a recoverable column base structure and a building thereof. Background Art

[0002] Steel frame structures constructed using traditional seismic design methods typically have rigid column bases, dissipating energy through yielding of the column base itself. This design approach can lead to severe post-earthquake yielding of the column base, resulting in expensive reinforcement and repair costs and significant residual deformation.

[0003] As people's living standards continue to improve, users' expectations for building seismic performance are increasing. Performance-based seismic design has become a widely-discussed research and development area within the earthquake engineering community. While ensuring that buildings remain intact in minor earthquakes, repairable in moderate earthquakes, and resistant to collapse in major earthquakes, mitigating earthquake damage and rapidly restoring functional properties is a cutting-edge research topic in the field of building seismic resistance. Summary of the Invention

[0004] The object of the present invention is to provide a recoverable column base structure and a building thereof, so as to solve at least one of the above-mentioned technical problems existing in the prior art.

[0005] To solve the above technical problems, the present invention provides a recoverable column base structure, comprising: an energy dissipation sleeve, used to connect upper and lower adjacent steel columns, and dissipate energy when the upper and lower steel columns undergo relative displacement;

[0006] The energy dissipation sleeve comprises: an upper connecting piece, a lower connecting piece and an energy dissipation plate;

[0007] The upper connecting piece is used to connect with the upper steel column;

[0008] The lower connecting piece is used to connect with the lower steel column;

[0009] The two ends of the energy-consuming plate are respectively connected to the upper connecting piece and the lower connecting piece. When the upper steel column and the lower steel column undergo relative displacement, the energy-consuming plate undergoes plastic deformation and consumes energy.

[0010] Furthermore, the energy consumption plate includes an upper connection portion, a middle energy consumption portion and a lower connection portion which are connected in sequence;

[0011] The upper connecting portion is used to connect to the upper connecting member, and the lower connecting portion is used to connect to the lower connecting member;

[0012] The middle energy-absorbing part is made of an energy-absorbing metal material, and both ends of the middle energy-absorbing part are fixedly connected to the upper connecting part and the lower connecting part respectively.

[0013] The energy-dissipating metal material is a plastically deformable material, such as energy-dissipating mild steel.

[0014] Furthermore, the intermediate energy-absorbing portion is an energy-absorbing mild steel strip, and each of the energy-absorbing plates includes a plurality of the energy-absorbing mild steel strips arranged at intervals.

[0015] Preferably, the upper connecting portion, the middle energy-consuming portion and the lower connecting portion are made in one piece.

[0016] Furthermore, a reset structure is included, which includes: an anchoring top plate relatively fixedly arranged on the upper connecting member, an anchoring bottom plate relatively fixedly arranged on the lower connecting member, and a reset spring;

[0017] The reset structure is symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve;

[0018] The two ends of the return spring rest against the anchoring top plate and the anchoring bottom plate. When working (i.e. after being installed in place), the return spring is compressed to form a pre-tightening force, which tends to straighten the upper connecting piece and the upper steel column.

[0019] That is, when the upper steel column and the lower steel column undergo relative displacement, the upper connecting member and the upper steel column can be forced to reset by the pre-tightening force of the reset spring in the reset structure.

[0020] When the upper steel column deflects or shakes under external forces, the energy-absorbing plates in the energy-absorbing sleeve elastically contract and dissipate energy, thereby eliminating the damaging effects of the external forces on the upper steel column. Simultaneously, the return spring, through its preload, straightens and resets the upper steel column, thus protecting the steel column base from damage during natural disasters such as earthquakes, reducing the cost of restoring its functionality and improving the functional recoverability of the closed-section steel column base.

[0021] Preferably, the return spring is a disc spring, a coil spring, etc.

[0022] Preferably, the reset structure is arranged on the outside of the energy consumption plate.

[0023] Furthermore, the energy dissipation plates are symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve.

[0024] Optionally, the anchoring top plate is fixedly arranged on the upper connecting member or the upper steel column; and / or the anchoring bottom plate is fixedly arranged on the lower connecting member or the lower steel column.

[0025] Furthermore, stiffening ribs are provided between the anchoring top plate and the upper steel column or the upper connecting piece; similarly, stiffening ribs are provided between the anchoring bottom plate and the lower steel column or the lower connecting piece.

[0026] Further, the upper connecting member is cross-shaped or star-shaped, and includes an upper web plate arranged in a cross shape or a star shape. Upper wing plates are vertically arranged at the ends of the upper web plate; the upper connecting portion of the energy dissipation plate is fixedly connected to the upper wing plate;

[0027] And / or, the lower connecting member is cross-shaped or star-shaped, and includes a lower web plate arranged in a cross shape or a star shape. Lower wing plates are vertically arranged at the ends of the lower web plate; the lower connecting portion of the energy dissipation plate is fixedly connected to the lower wing plate.

[0028] Preferably, it further includes a steel ball. A lower arc groove is provided at the center of the top of the lower web plate;

[0029] An upper arc groove is provided at the center of the bottom of the upper web plate;

[0030] The upper arc groove and the lower arc groove are arranged opposite to each other vertically and at intervals, thus forming a spherical space. The steel ball is rotatably installed in the spherical space.

[0031] That is, the upper part of the steel ball is inserted into the upper arc groove, and the lower part of the steel ball is inserted into the lower arc groove. The steel ball abuts against the upper web plate and the lower web plate respectively up and down, so as to realize the transfer of the supporting force from the lower connecting member to the upper connecting member. The steel ball is rotatably arranged. During an earthquake, when the upper steel column shakes, a hinge structure is formed between the steel ball and the lower arc groove and the upper arc groove, thus allowing the upper steel column to swing freely. Thereby, the energy dissipation plate starts to work and dissipate energy; after the shaking ends, under the action of the pre-tightening force of the return spring, the upper steel column can be quickly reset. Whether in the energy dissipation or reset process, the steel ball plays a main supporting role, greatly reducing the loads on the energy dissipation plate and the return spring, and thus the energy dissipation and reset functions of both can be fully exerted.

[0032] Preferably, the upper wing plate is fixedly connected to the upper steel column by bolts, riveting or welding; the lower wing plate is fixedly connected to the lower steel column by bolts, riveting or welding.

[0033] Further, an installation opening is provided above the lower steel column, and the lower connecting member is inserted into the installation opening by plug welding. [[ID=!23]]

[0034] Further, a pedestal is provided at the bottom of the lower connecting member;

[0035] A base for supporting the pedestal is fixedly arranged in the installation opening of the lower steel column.

[0036] Further, a plug is provided at the center of the bottom of the pedestal, and a socket adapted to the plug is provided on the base; a chamfer is provided at the top of the plug for guiding the plug to be quickly inserted into the socket during assembly.

[0037] Furthermore, a column foot base is provided at the bottom of the lower connecting member, and the pedestal is fixed on the column foot base.

[0038] The energy-absorbing sleeve in the present application can be pre-installed at the bottom of the upper steel column. During construction, the upper steel column can be quickly inserted into the installation port at the top of the lower steel column through the energy-absorbing sleeve. The plug cooperates with the plug hole to realize rapid centering (i.e., rapid positioning) of the upper and lower steel columns; the column foot bottom plate overlaps the top of the upper steel column, and the base supports the upper steel column through the pedestal, thereby realizing rapid assembly with high assembly accuracy.

[0039] Furthermore, the reset spring is fixed by a screw and a nut; the anchoring top plate and the anchoring bottom plate are respectively provided with through holes;

[0040] The screw is inserted into the two through holes, and the return spring is sleeved on the screw;

[0041] The two ends of the screw rod are connected and fixed to the anchoring top plate and the anchoring bottom plate through nuts.

[0042] By tightening the nuts at both ends of the screw, the distance between the anchoring top plate and the anchoring bottom plate can be adjusted, as well as the preload force of the return spring.

[0043] Furthermore, it also includes an arc-shaped slat made of energy-absorbing mild steel, and connection holes are provided at both ends of the arc-shaped slat. The connection holes at both ends of the arc-shaped slat are respectively mounted on the two ends of the screw rod and tightened and fixed with nuts, so that the two ends of the arc-shaped slat are fixedly connected to the anchoring top plate and the anchoring bottom plate.

[0044] Furthermore, one or more of the arc-shaped strips may be selectively arranged on the outside of one or more of the reset springs, so as to reinforce the partially or completely failed energy-consuming plate facing the reset spring.

[0045] If part or all of the intermediate energy dissipation section of the energy dissipation plate fails and cannot deform normally to dissipate energy, curved strips can be installed on the outside of the failed intermediate energy dissipation section. These strips connect to the ends of the screw rod facing the failed intermediate energy dissipation section through connection holes. When the upper steel column moves relative to the lower steel column, the curved strips deform accordingly and dissipate energy. The entire repair process is simple and quick.

[0046] Furthermore, it also includes a slot-type limiter, which is a U-shaped channel steel with connecting holes at both ends. The anchoring top plate and the anchoring bottom plate are inserted into the U-shaped slot of the slot-type limiter, and the connecting holes at both ends of the slot-type limiter are mounted on the two ends of the screw.

[0047] The slotted limiter uses the width of the U-shaped slot to define the maximum displacement between the upper and lower steel columns. This prevents excessive deformation at the column base, potentially damaging the structure. During minor earthquakes, it provides only partial stiffness at this node. During moderate earthquakes, it limits vertical deformation, preventing excessive deformation that could affect structural stiffness and comfort. During major earthquakes, it not only limits deformation at this node, but also dissipates energy to protect the main structure if significant deformation occurs.

[0048] Furthermore, it also includes a friction energy dissipator, which includes an upper arc plate, a lower arc plate, a copper plate and a fastening bolt;

[0049] The upper end of the upper arc-shaped plate is fixedly connected to the upper steel column or the upper connecting piece;

[0050] The lower end of the lower arc-shaped plate is fixedly connected to the lower steel column or the lower connecting piece;

[0051] An arc-shaped long hole is provided on the lower middle portion of the upper arc-shaped plate or on the upper middle portion of the lower arc-shaped plate;

[0052] The lower arc plate or the upper arc plate is provided with a circular hole;

[0053] The fastening bolts pass through the circular holes and the arc-shaped long holes to clamp and fix the lower arc-shaped plate and the upper arc-shaped plate;

[0054] The copper plate is clamped between the lower curved plate and the upper curved plate.

[0055] Normally, the friction energy absorber can be used to increase the stiffness of the entire column base structure and improve stability. When a natural disaster such as an earthquake occurs, angular displacement occurs between the upper and lower arc plates, and the friction of the copper plate is used to dissipate energy, reduce earthquake energy, and protect the main structure.

[0056] Preferably, the copper plate is provided with an arc-shaped long hole.

[0057] Furthermore, the number of the upper arc-shaped plates is two, and one lower arc-shaped plate is clamped between the two upper arc-shaped plates.

[0058] Furthermore, the plurality of friction energy absorbers are symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve.

[0059] Furthermore, the friction energy absorber is arranged on the outside of the energy dissipation plate that is partially or completely failed, so as to reinforce the energy dissipation plate.

[0060] When part or all of the intermediate energy absorbing parts in the energy absorbing plate fail and cannot be deformed normally to dissipate energy, the friction energy dissipator can be installed on the outside of the failed intermediate energy dissipation part. The upper arc plate and the lower arc plate are respectively fixed to the upper steel column (or upper connecting piece) or the lower steel column (or lower connecting piece) by welding, and then fastened and clamped with bolts. The entire maintenance process is simple and quick.

[0061] The second aspect of the present application discloses a building using the above-mentioned recoverable column base structure.

[0062] By adopting the above technical solution, the present invention has the following beneficial effects:

[0063] The present invention provides a recoverable column base structure and a building thereof, which realizes the functional recoverability of a closed-section steel column base, does not occupy the usable space of the building, does not affect its usable function, and realizes efficient assembly construction of the column base; in terms of force, it can realize functional recoverability and energy dissipation, and can also achieve good performance of a small-earthquake rigid column base. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0065] Figure 1 A schematic structural diagram of a recoverable column base structure provided in Example 1 of the present invention;

[0066] Figure 2 for Figure 1 The schematic structural diagram of the energy dissipation plate shown;

[0067] Figure 3 for Figure 1 A schematic structural diagram of the lower connecting member and the upper connecting member shown;

[0068] Figure 4 This is a schematic diagram of the assembly of the reset structure in Example 1;

[0069] Figure 5 for Figure 4 Structural diagram of the reset structure;

[0070] Figure 6 This is a schematic diagram of the assembly of the lower connecting member in Example 2 of the present invention;

[0071] Figure 7 Schematic diagram of the structure of the recoverable column base structure in Example 3 of the present invention;

[0072] Figure 8 Schematic diagram of the structure of the recoverable column base structure in Example 4 of the present invention;

[0073] Figure 9 This is a partial enlarged view of the friction energy dissipator in Example 4 of the present invention;

[0074] Figure 10 Schematic diagram of the structure of the lower curved plate in Example 4 of the present invention;

[0075] Figure 11 Schematic diagram of the structure of the upper connecting member and the lower connecting member in Example 5;

[0076] Figure 12 This is a schematic structural diagram of the upper connecting member and the lower connecting member in Example 6.

[0077] Reference numerals:

[0078] 10-upper steel column; 20-lower steel column; 21-base; 22-socket hole; 600-energy dissipation sleeve; 610-upper connecting piece; 611-upper belly plate; 612-upper wing plate; 620-lower connecting piece; 621-lower belly plate; 622-lower wing plate; 623-column foot plate; 624-pedestal; 625-plug; 630-energy dissipation plate; 631-upper connecting part; 632-middle energy dissipation part; 633-lower connecting part; 640- Reset structure; 641-anchoring top plate; 642-screw; 643-reset spring; 644-anchoring bottom plate; 651-arc-shaped strip; 652-groove-type limiter; 660-friction energy absorber; 661-upper arc-shaped plate; 662-lower arc-shaped plate; 663-fastening bolt; 664-copper plate; 665-arc-shaped long hole; 670-steel ball; 671-upper hemisphere; 672-lower hemisphere; 673-steel pin; 674-thrust disc spring. DETAILED DESCRIPTION

[0079] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0080] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0081] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0082] The present invention will be further explained below with reference to specific embodiments.

[0083] Example 1

[0084] like Figure 1-3 As shown, a recoverable column base structure provided in this embodiment includes: an energy dissipation sleeve 600, which is used to connect the upper steel column 10 and the lower steel column 20 adjacent to each other, and to dissipate energy when the upper steel column 10 and the lower steel column 20 undergo relative vertical displacement.

[0085] The energy dissipation sleeve 600 includes: an upper connecting member 610, a lower connecting member 620 and an energy dissipation plate 630; the upper connecting member 610 is used to connect to the upper steel column 10; the lower connecting member 620 is used to connect to the lower steel column 20; the two ends of the energy dissipation plate 630 are respectively connected to the upper connecting member 610 and the lower connecting member 620. When the upper steel column 10 and the lower steel column 20 undergo relative displacement, the energy dissipation plate 630 undergoes elastic deformation or plastic deformation to dissipate energy.

[0086] In this embodiment, the energy dissipation plates 630 are symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve 600. When the energy dissipation sleeve 600 is circular or a regular polygon, the plurality of energy dissipation plates 630 are evenly arranged in the circumferential direction of the energy dissipation sleeve 600.

[0087] Furthermore, the energy dissipation plate 630 includes an upper connection portion 631, a middle energy dissipation portion 632 and a lower connection portion 633 which are connected in sequence;

[0088] The upper connecting part 631 is used to connect with the upper connecting member 610, and the lower connecting part 633 is used to connect with the lower connecting member 620;

[0089] The middle energy dissipation part 632 is made of energy dissipation metal material, and both ends of the middle energy dissipation part 632 are fixedly connected with the upper connecting part 631 and the lower connecting part 633 respectively.

[0090] Among them, the energy dissipation metal material is a material that can be plastically deformed, such as energy dissipation mild steel.

[0091] Furthermore, the middle energy dissipation part 632 is an energy dissipation mild steel strip, and each energy dissipation plate 630 includes a plurality of the energy dissipation mild steel strips arranged at intervals. Preferably, the upper connecting part 631, the middle energy dissipation part 632 and the lower connecting part 633 are integrally formed.

[0092] The upper connecting member 610 is cross-shaped or cross-star-shaped, and includes upper webs 611 arranged in a cross shape or cross-star shape, and upper flanges 612 are vertically arranged at the ends of the upper webs 611; the upper connecting part 631 of the energy dissipation plate 630 is fixedly connected with the upper flanges 612;

[0093] And, the lower connecting member 620 is cross-shaped or cross-star-shaped, and includes lower webs 621 arranged in a cross shape or cross-star shape, and lower flanges 622 are vertically arranged at the ends of the lower webs 621; the lower connecting part 633 of the energy dissipation plate 630 is fixedly connected with the lower flanges 622.

[0094] See Figure 1 、 4 As shown in FIGS. 4 and 5, this embodiment further includes a reset structure 640, and the reset structure 640 includes: an anchoring top plate 641 fixedly arranged relatively on the upper connecting member 610, an anchoring bottom plate 644 fixedly arranged relatively on the lower connecting member 620, and a reset spring 643.

[0095] In this embodiment, the energy dissipation sleeve 600 is a rectangular cylinder, and the reset structure 640 is symmetrically arranged in the front-back direction and left-right direction of the energy dissipation sleeve 600; and when the energy dissipation sleeve 600 is circular or regular polygon, the reset structure 640 is uniformly arranged in the circumferential direction of the energy dissipation sleeve 600.

[0096] Both ends of the reset spring 643 abut against the anchoring top plate 641 and the anchoring bottom plate 644. During work or after being installed in place, the reset spring 643 is compressed to form a pre-tightening force, which tends to straighten the upper connecting member 610 and the upper steel column 10. That is, when the upper steel column 10 and the lower steel column 20 have relative displacement, the pre-tightening force of the reset spring 643 in the reset structure 640 can force the upper connecting member 610 and the upper steel column 10 to reset.

[0097] When the upper steel column 10 deflects or shakes under external forces, the energy-absorbing plate 630 in the energy-absorbing sleeve 600 elastically contracts and dissipates energy, thereby eliminating the damaging effects of the external forces on the upper steel column 10. Simultaneously, the return spring 643 uses its preloaded force to straighten and reset the upper steel column 10, thus protecting the steel column foot from damage during natural disasters such as earthquakes, reducing the cost of restoring its functionality, and improving the functional recoverability of the closed-section steel column foot.

[0098] Preferably, the reset spring 643 is a disc spring. The reset structure 640 is arranged on the outside of the energy dissipation plate 630 .

[0099] The return spring 643 is fixed by a screw 642 and a nut; the anchoring top plate 641 and the anchoring bottom plate 644 are respectively provided with through holes; the screw 642 is inserted into the two through holes, and the return spring 643 is sleeved on the screw 642; the two ends of the screw 642 are connected and fixed to the anchoring top plate 641 and the anchoring bottom plate 644 by nuts.

[0100] By tightening the nuts at both ends of the screw rod 642 , the distance between the anchoring top plate 641 and the anchoring bottom plate 644 can be adjusted, and the preload force of the return spring 643 can be adjusted.

[0101] Optionally, the anchoring top plate 641 is fixedly disposed on the upper connecting member 610 or the upper steel column 10 ; and the anchoring bottom plate 644 is fixedly disposed on the lower connecting member 620 or the lower steel column 20 .

[0102] In this embodiment, stiffening ribs are provided between the anchoring top plate 641 and the upper steel column 10. Similarly, stiffening ribs are provided between the anchoring bottom plate 644 and the lower connector 620. The upper wing plate 612 can be connected to the upper steel column 10 by bolts, rivets, or welding; the lower wing plate 622 can be connected to the lower steel column 20 by bolts, rivets, or welding.

[0103] The present embodiment provides a recoverable column base structure and a building thereof, which realizes the functional recoverability of the closed-section steel column base, does not occupy the building's usable space, does not affect its usable function, and realizes efficient assembly construction of the column base; in terms of force, it can realize functional recoverability and energy dissipation, and can also achieve good performance of small-earthquake rigid column bases.

[0104] Example 2

[0105] This embodiment is basically the same as embodiment 1, except that:

[0106] A mounting opening is provided above the lower steel column 20 , and the lower connecting piece 620 is inserted into the mounting opening by plug welding.

[0107] Reference Figure 6 As shown, a base 624 is provided at the bottom of the lower connecting member 620;

[0108] A base 21 for supporting the pedestal 624 is fixedly provided in the installation opening of the lower steel column 20 .

[0109] A plug 625 is provided at the bottom center of the pedestal 624, and a socket 22 adapted to the plug 625 is provided on the base 21; a chamfer is provided on the top of the plug 625 to guide the plug 625 to be quickly inserted into the socket 22 during assembly.

[0110] In this embodiment, a column foot bottom plate 623 is provided at the bottom of the lower connecting member 620 , and the pedestal 624 is fixed on the column foot bottom plate 623 .

[0111] The energy-absorbing sleeve 600 in the present application can be pre-installed at the bottom of the upper steel column 10. During construction, the upper steel column 10 can be quickly inserted into the installation port at the top of the lower steel column 20 through the energy-absorbing sleeve 600. The plug 625 cooperates with the plug hole 22 to realize rapid alignment (i.e., rapid positioning) of the upper steel column 10 and the lower steel column 20; the column foot bottom plate 623 is overlapped on the top of the upper steel column 10, and the base 21 supports the upper steel column 10 through the pedestal 624, thereby realizing rapid assembly with high assembly accuracy.

[0112] Example 3

[0113] This embodiment is basically the same as embodiment 1 or 2, except that:

[0114] Reference Figure 7 As shown, this embodiment also includes an arc-shaped slat 651 made of energy-absorbing mild steel, and connection holes are provided at both ends of the arc-shaped slat 651. The connection holes at both ends of the arc-shaped slat 651 are respectively mounted on the two ends of the screw 642 and then tightened and fixed with nuts, so that the two ends of the arc-shaped slat 651 are fixedly connected to the anchoring top plate 641 and the anchoring bottom plate 644.

[0115] One or more of the arc-shaped strips 651 may be selectively provided on the outside of one or more of the return springs 643 to reinforce the partially or completely failed energy dissipation plate 630 facing the return spring 643 .

[0116] If some or all of the intermediate energy dissipation sections 632 of the energy dissipation plate 630 fail and are unable to deform properly to dissipate energy, curved strips 651 can be installed outside the failed intermediate energy dissipation sections 632. These strips 651 connect to the ends of the screw rods 642 facing the failed intermediate energy dissipation sections 632 through connection holes. When the upper steel column 10 moves relative to the lower steel column 20, the curved strips 651 deform accordingly and dissipate energy. This makes the entire repair process simple and quick.

[0117] More preferably, this embodiment may also include a slot-type limiter 652, which is a U-shaped channel steel with connecting holes at both ends. The anchoring top plate 641 and the anchoring bottom plate 644 are inserted into the U-shaped slot of the slot-type limiter 652, and the connecting holes at both ends of the slot-type limiter 652 are mounted on the two ends of the screw 642.

[0118] The slotted stopper 652 uses the width of the U-shaped slot to limit the maximum displacement between the upper and lower steel columns 10 and 20. This prevents excessive deformation of the column base, which could damage the structure. During minor earthquakes, it only provides partial stiffness at this node. During moderate earthquakes, it limits vertical deformation of the structure, preventing excessive deformation that could affect structural stiffness and comfort. During major earthquakes, it not only limits deformation at this node, but also dissipates energy to protect the main structure if significant deformation occurs.

[0119] Example 4

[0120] This embodiment is basically the same as embodiment 1-3, except that:

[0121] Reference Figure 8-10 As shown, this embodiment also includes a friction energy dissipator 660, which includes an upper curved plate 661, a lower curved plate 662, a copper plate 664, and fastening bolts 663. The upper end of the upper curved plate 661 is fixedly connected to the upper steel column 10 or the upper connecting member 610; the lower end of the lower curved plate 662 is fixedly connected to the lower steel column 20 or the lower connecting member 620. An arc-shaped elongated hole 665 is provided in the upper middle portion of the lower curved plate 662 and the copper plate 664. The upper curved plate 661 is provided with a circular hole. The fastening bolts 663 pass through the circular hole and the arc-shaped elongated hole 665 to clamp the lower curved plate 662 and the upper curved plate 661. The copper plate 664 is clamped between the lower curved plate 662 and the upper curved plate 661. The copper plate 664 is preferably made of brass.

[0122] Normally, the friction energy absorber 660 can be used to increase the stiffness of the entire column base structure and improve stability. When a natural disaster such as an earthquake occurs, an angular displacement occurs between the upper arc plate 661 and the lower arc plate 662, and the friction with the copper plate 664 is used to dissipate energy, reduce earthquake energy, and protect the main structure.

[0123] In this embodiment, there are two upper arc-shaped plates 661 , and one lower arc-shaped plate 662 is clamped between the two upper arc-shaped plates 661 .

[0124] Optionally, multiple friction energy dissipators 660 are symmetrically arranged in the front-to-back and left-to-right directions of the energy dissipation sleeve 600 to reinforce all energy dissipation plates 630. Alternatively, friction energy dissipators 660 can be installed outside a partially or completely failed energy dissipation plate 630 to reinforce that plate. If some or all of the intermediate energy dissipation portion 632 of an energy dissipation plate 630 fails and cannot properly deform and dissipate energy, friction energy dissipators 660 can be installed outside the failed intermediate energy dissipation portion 632. The upper and lower curved plates 661 and 662 are respectively secured to the upper steel column 10 (or upper connector 610) or lower steel column 20 (or lower connector 620) by welding and then bolted together, making the entire repair process simple and quick.

[0125] Example 5

[0126] This embodiment is basically the same as Embodiments 1-4, except that:

[0127] Reference Figure 11 As shown, this embodiment also includes a steel ball 670. A lower arc groove is provided at the top center of the lower web 621; an upper arc groove is provided at the bottom center of the upper web 611. The upper and lower arc grooves are arranged in a spaced relationship, forming a spherical space. The steel ball 670 is rotatably mounted within the spherical space. The upper portion of the steel ball 670 is inserted into the upper arc groove, and the lower portion of the steel ball 670 is inserted into the lower arc groove. The steel ball 670 rests against the lower web 621 and upper web 611, respectively, to transmit the supporting force from the lower connector 620 to the upper connector 610. Steel ball 670 is rotatable. During an earthquake, if upper steel column 10 shakes, a hinged structure is formed between steel ball 670 and the lower and upper arc grooves, allowing upper steel column 10 to swing freely, thereby allowing energy dissipation plate 630 to begin consuming energy. After the shaking stops, the upper steel column 10 can quickly return to its original position under the preload of return spring 643. Whether consuming energy or returning to its original position, steel ball 670 plays a primary supporting role, significantly reducing the load on energy dissipation plate 630 and preventing return spring 643 from excessive compression and failure. This ensures normal energy dissipation and return function, and significantly extends the service life of energy dissipation plate 630 and return spring 643.

[0128] Example 6

[0129] This embodiment is basically the same as embodiment 5, except that:

[0130] Reference Figure 12As shown, this embodiment includes: an upper hemisphere 671, a lower hemisphere 672, a steel pin 673 and a thrust disc spring 674; the upper hemisphere 671 and the lower hemisphere 672 are arranged opposite to each other and spaced apart; an upper shaft hole is provided at the center of the bottom surface of the upper hemisphere 671, and a lower shaft hole is provided at the center of the top surface of the lower hemisphere 672; the upper part of the steel pin 673 can be relatively slidably inserted into the upper shaft hole, and the lower part of the steel pin 673 can be relatively slidably inserted into the lower shaft hole; the upper hemisphere 671 and the lower hemisphere 672 can be relatively close to and far away from each other through the steel pin 673; the thrust disc spring 674 is sleeved on the steel pin 673 and is provided between the upper hemisphere 671 and the lower hemisphere 672.

[0131] A lower arc groove is provided at the top center of the lower web 621; an upper arc groove is provided at the bottom center of the upper web 611; the upper arc groove and the lower arc groove are opposite to each other and arranged at intervals, the upper hemisphere 671 is inserted into the upper arc groove, and the lower hemisphere 672 is inserted into the lower arc groove; when assembled in place or working, the thrust disc spring 674 is compressed, and the upper hemisphere 671 and the lower hemisphere 672 respectively press against the upper web 611 and the lower web 621 under the spring force of the thrust disc spring 674, so as to realize the transmission of the supporting force from the lower connecting member 620 to the upper connecting member 610.

[0132] In Example 5, during long-term use or when a large-scale earthquake occurs, due to the large deformation of the column base structure, the upper steel column 10 and the upper connecting member 610 undergo large displacement or deflection, which will cause the upper web 611 to temporarily or permanently separate from the steel ball 670, thereby causing the load on the energy dissipation plate 630 and the return spring 643 to suddenly increase, and the energy dissipation plate 630 and the return spring 643 cannot work normally, or even be damaged.

[0133] In this embodiment, the upper hemisphere 671 and the lower hemisphere 672 always rest against the upper web 611 and the lower web 621 under the spring force of the thrust disc spring 674. Even if the column foot structure undergoes significant deformation, or the upper steel column 10 and the upper connector 610 undergo significant displacement or deflection, the upper hemisphere 671 and the lower hemisphere 672 always rest against the lower web 621 and the upper web 611 under the spring force of the thrust disc spring 674, smoothly transmitting the supporting force from the lower connector 620 to the upper connector 610. This prevents the energy dissipation plate 630 and the return spring 643 from suddenly increasing in load, which could cause them to malfunction or even be damaged.

[0134] In order to prevent the upper hemisphere 671 and the lower hemisphere 672 from tipping over at 90 degrees, one of the upper hemisphere 671 and the lower hemisphere 672 may be fixedly connected to the upper web 611 or the lower web 621 by welding.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A recoverable column base structure, characterized in that: include: Energy dissipation sleeves are used to connect the upper and lower adjacent steel columns and dissipate energy when the upper and lower steel columns undergo relative displacement; The energy dissipation sleeve comprises: an upper connecting piece, a lower connecting piece and an energy dissipation plate; The upper connecting piece is used to connect with the upper steel column; The lower connecting piece is used to connect with the lower steel column; The two ends of the energy dissipation plate are respectively connected to the upper connecting member and the lower connecting member. When the upper steel column and the lower steel column are relatively displaced, the energy dissipation plate undergoes plastic deformation and consumes energy. The upper connecting member is cross-shaped or 'M'-shaped, including an upper web arranged in a cross-shaped or 'M'-shaped pattern, with an upper wing plate vertically provided at the end of the upper web; the lower connecting member is cross-shaped or 'M'-shaped, including a lower web arranged in a cross-shaped or 'M'-shaped pattern, with a lower wing plate vertically provided at the end of the lower web; It also includes an upper hemisphere, a lower hemisphere, a steel pin and a thrust disc spring; the upper hemisphere and the lower hemisphere are arranged opposite to each other and spaced apart; an upper shaft hole is provided at the center of the bottom surface of the upper hemisphere, and a lower shaft hole is provided at the center of the top surface of the lower hemisphere; the upper portion of the steel pin can be relatively slidably inserted into the upper shaft hole, and the lower portion of the steel pin can be relatively slidably inserted into the lower shaft hole; the upper hemisphere and the lower hemisphere can be relatively close to or away from each other through the steel pin; the thrust disc spring is sleeved on the steel pin and is provided between the upper hemisphere and the lower hemisphere; A lower arc groove is provided at the top center of the lower web; an upper arc groove is provided at the bottom center of the upper web; the upper arc groove and the lower arc groove are opposite to each other and arranged at intervals, the upper hemisphere is inserted into the upper arc groove, and the lower hemisphere is inserted into the lower arc groove; when assembled in place or working, the thrust disc spring is compressed, and the upper hemisphere and the lower hemisphere are respectively pressed against the upper web and the lower web under the spring force of the thrust disc spring, so as to realize the transmission of the supporting force from the lower connecting part to the upper connecting part.

2. The recoverable column base structure according to claim 1, characterized in that: The energy consumption plate includes an upper connection part, a middle energy consumption part and a lower connection part which are connected in sequence; The upper connecting portion is used to connect to the upper connecting member, and the lower connecting portion is used to connect to the lower connecting member; The middle energy-absorbing part is made of an energy-absorbing metal material, and both ends of the middle energy-absorbing part are fixedly connected to the upper connecting part and the lower connecting part respectively.

3. The recoverable column base structure according to claim 2, characterized in that: The middle energy-absorbing part is an energy-absorbing mild steel strip, and each of the energy-absorbing plates includes a plurality of the energy-absorbing mild steel strips arranged at intervals.

4. The recoverable column base structure according to claim 2, characterized in that: It also includes a reset structure, which includes: an anchor top plate relatively fixedly arranged on the upper connecting member, an anchor bottom plate relatively fixedly arranged on the lower connecting member, and a reset spring; The reset structure is symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve; The two ends of the return spring are against the anchoring top plate and the anchoring bottom plate, and the return spring is compressed to form a pre-tightening force, which tends to straighten the upper connecting piece and the upper steel column.

5. The recoverable column base structure according to claim 4, characterized in that: The reset spring is a disc spring or a coil spring; the reset structure is arranged on the outside of the energy dissipation plate.

6. The recoverable column base structure according to claim 4, characterized in that: The energy dissipation plates are symmetrically arranged in the front-to-back direction and the left-to-right direction of the energy dissipation sleeve; Alternatively, the energy dissipation plates are evenly arranged in the circumferential direction of the energy dissipation sleeve; The anchoring top plate is fixedly arranged on the upper connecting member or the upper steel column; and / or the anchoring bottom plate is fixedly arranged on the lower connecting member or the lower steel column.

7. The recoverable column base structure according to claim 4, characterized in that: The upper connecting portion of the energy dissipation plate is fixedly connected to the upper wing plate; And / or, the lower connecting portion of the energy dissipation plate is fixedly connected to the lower wing plate.

8. The recoverable column base structure according to claim 1, characterized in that: A mounting opening is provided above the lower steel column, and the lower connecting piece is inserted into the mounting opening by plug welding.

9. The recoverable column base structure according to claim 8, characterized in that: A pedestal is provided at the bottom of the lower connecting member; A base for supporting the pedestal is fixedly provided in the mounting opening of the lower steel column; A plug is provided at the center of the bottom of the pedestal, and a plug hole adapted to the plug is provided on the base; a chamfer is provided on the top of the plug to guide the plug to be quickly inserted into the plug hole during assembly.

10. A building using the recoverable column base structure according to any one of claims 1 to 9.

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