Viscous damper and coupled beam with viscous damper and buckling restrained energy link

Abstract

The present application provides a viscous damper and a coupling beam with the viscous damper and a buckling-restrained damper, the coupling beam comprising upper and lower viscous dampers arranged in parallel and upper and lower buckling-restrained dampers arranged in parallel, wherein the upper and lower viscous dampers have the same structure and the upper and lower buckling-restrained dampers have the same structure. The coupling beam of the present application uses two viscous dampers and two buckling-restrained dampers as energy dissipation structures, the buckling-restrained dampers and the viscous dampers have complementary performances, and the two work together, which can effectively improve the seismic toughness of the coupling beam.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of anti-seismic and disaster prevention and mitigation technology of civil engineering structure, and relates to an anti-seismic coupling beam, in particular to a viscous damper and a coupling beam with the viscous damper and a buckling-restrained energy-consuming rod. BACKGROUND

[0002] Energy dissipation technology refers to installing dampers in some relatively large deformation parts of the original structure or designing some non-load-bearing members as energy dissipation members to form a new structural system with the original structure. When an earthquake occurs, the dampers or energy dissipation members enter the energy dissipation state first to consume a large amount of seismic energy, thereby improving the seismic performance. Compared with traditional seismic structures, energy dissipation seismic structures have the following characteristics and advantages: the energy dissipation seismic structure system is provided with additional non-load-bearing energy dissipation members (energy dissipation supports, energy dissipation shear walls, etc.) or energy dissipation devices, etc. When a strong earthquake occurs, they enter the energy dissipation stage first to consume most of the seismic energy, thereby providing an additional line of defense for the structure, protecting the main structure and members from damage, having good controllability, and greatly improving the safety of the building.

[0003] A coupling beam is disclosed in Chinese Patent No. CN114293674B, which uses four SMA friction composite dampers as energy dissipation and seismic reduction structures, can realize self-repair during an earthquake, and improves the energy dissipation capacity of the coupling beam while reducing the post-earthquake residual displacement of the coupling beam. The main defect of the above-mentioned prior art is that although the SMA friction composite damper can resist damage caused by a strong earthquake, its structure has insufficient damping, which makes it difficult to fully enter plasticity to dissipate seismic energy during a small or moderate earthquake. SUMMARY

[0004] In view of the defects and deficiencies of the prior art, the purpose of the present application is to provide a viscous damper and a coupling beam with the viscous damper and a buckling-restrained energy-consuming rod, which solves the technical problem that the damping and energy dissipation capacity of the energy dissipation and seismic reduction structure of the coupling beam in the prior art need to be further improved.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] A coupling beam with a viscous damper and a buckling-restrained energy-consuming rod, comprising upper viscous dampers and lower buckling-restrained energy-consuming rods arranged in parallel, and upper buckling-restrained energy-consuming rods and lower viscous dampers arranged in parallel; the upper viscous dampers and the lower viscous dampers have the same structure, and the upper buckling-restrained energy-consuming rods and the lower buckling-restrained energy-consuming rods have the same structure.

[0007] The upper viscous damper comprises a damper cylinder body, one axial end of the damper cylinder body is closed and the other axial end is open, and a damper cover is fixedly arranged at the open axial end of the damper cylinder body; a piston rod is movably arranged in the damper cylinder body, and a piston is fixedly arranged at one axial end of the piston rod; a closed space formed by the damper cylinder body and a damper baffle is a damping medium cavity.

[0008] The first SMA thin rod is movably arranged in the piston, and a first thin rod limiting block is fixedly connected to the other axial end of the first SMA thin rod which protrudes out of the piston; the second SMA thin rod is movably arranged in the piston, a second thin rod limiting block is fixedly connected to the axial end of the second SMA thin rod which protrudes out of the piston, and the other axial end of the second SMA thin rod is fixedly connected to the damper baffle; the other axial end of the first SMA thin rod and the axial end of the second SMA thin rod are oppositely arranged with the center axis of the piston as the symmetry axis.

[0009] The space formed by the damper cylinder body, the damper cover and the damper baffle is a gear set setting cavity; a gear box is arranged in the gear set setting cavity, one axial end of the gear box is closed and the other axial end is open, and the axial end of the gear box is fixedly connected to the other axial end of the piston rod; a pair of gear tracks are arranged on the inner wall of the gear box, the pair of gear tracks are oppositely arranged with the center axis of the gear box as the symmetry axis, and a large gear is engaged on the gear tracks; a guide rod is movably arranged in the gear box, a rack is arranged on the axial end of the guide rod and engaged with a pair of small gears, and the pair of small gears are oppositely arranged with the guide rod as the symmetry axis.

[0010] The large gear and the small gear are fixedly connected and concentrically arranged, one small gear and one large gear jointly form a gear set, and the guide rod can drive the gear set to rotate after moving in the axial direction, so that the gear set can move on the gear tracks in the axial direction.

[0011] The damper further has the following technical features:

[0012] A damper connecting lug is fixedly arranged on the closed axial end of the damper cylinder body; a through hole is formed in the center of the damper cover, the other axial end of the guide rod passes through the through hole in the center of the damper cover and protrudes out of the damper cylinder body, and a guide rod connecting lug is fixedly arranged on the other axial end of the guide rod.

[0013] The lower buckling-restrained energy dissipation rod comprises an outer sleeve, both ends of the outer sleeve are open, and the outer sleeve is nested with an inner rod, the middle section of the inner rod is in a cross section, and the axial two sections of the inner rod are in a circular cross section.

[0014] A left pin hole is formed on the axial one end of the inner rod, a right pin hole is formed on the axial other end of the inner rod, the axial two ends of the inner rod are in a circular cross section, and the left pin hole and the right pin hole are used for mounting the buckling-restrained energy dissipation rod on the coupling beam.

[0015] The included angle formed by the upper buckling-restrained energy dissipation rod and the lower buckling-restrained energy dissipation rod is α1, the included angle formed by the upper viscous damper and the lower viscous damper is α2, α1 is equal to α2; the included angle formed by the upper buckling-restrained energy dissipation rod and the upper viscous damper is β1, the included angle formed by the lower buckling-restrained energy dissipation rod and the lower viscous damper is β2, and β1 is equal to β2.

[0016] The coupling beam comprises a left non-energy-dissipation beam section and a right non-energy-dissipation beam section, the left non-energy-dissipation beam section and the right non-energy-dissipation beam section are parallel to each other and are arranged along the vertical direction; the left non-energy-dissipation beam section and the right non-energy-dissipation beam section are hingedly connected with an upper chord and a lower chord, and the upper chord and the lower chord are parallel to each other and are arranged along the horizontal direction.

[0017] One end of the upper buckling-restrained energy dissipation rod is hingedly connected to the inner side of the left non-energy-dissipation beam section, the other end of the upper buckling-restrained energy dissipation rod is hingedly connected to the inner side of the upper chord, one end of the upper viscous damper is also hingedly connected to the inner side of the upper chord, and the other end of the upper viscous damper is hingedly connected to the inner side of the right non-energy-dissipation beam section; one end of the lower viscous damper is also hingedly connected to the inner side of the right non-energy-dissipation beam section, the other end of the lower viscous damper is hingedly connected to the inner side of the lower chord, one end of the lower buckling-restrained energy dissipation rod is also hingedly connected to the inner side of the lower chord, and the other end of the lower buckling-restrained energy dissipation rod is hingedly connected to the inner side of the left non-energy-dissipation beam section.

[0018] The top of the inner side of the left non-energy-dissipation beam section is provided with a first connecting end head, and the bottom of the inner side of the left non-energy-dissipation beam section is provided with a second connecting end head; the top of the inner side of the right non-energy-dissipation beam section is provided with a third connecting end head, and the bottom of the inner side of the right non-energy-dissipation beam section is provided with a fourth connecting end head; the first connecting end head, the second connecting end head, the third connecting end head and the fourth connecting end head are oppositely arranged and are the same in structure.

[0019] The present application also protects the viscous damper as described above.

[0020] Compared with the prior art, the present application has the following beneficial technical effects:

[0021] (I) The coupling beam of the present application takes two viscous dampers and two buckling-restrained energy-consuming bars as energy-dissipation structures, and the buckling-restrained energy-consuming bars and the viscous dampers are complementary in performance, wherein the buckling-restrained energy-consuming bars fully enter the plastic state to dissipate seismic energy under large earthquakes, thereby increasing the energy-dissipation capacity of the coupling beam to avoid damage to the non-energy-dissipation beam segment and the shear wall; the viscous damper can increase the additional damping of the structure under small and medium earthquakes, reduce the seismic acceleration, and also has good energy-dissipation capacity under small earthquakes, while providing self-resetting capacity for the coupling beam. According to the above analysis, compared with the coupling beam in the prior art, the coupling beam of the present application has larger structural damping and stronger energy-dissipation capacity, and the buckling-restrained energy-consuming bars and the viscous dampers work cooperatively to effectively improve the seismic toughness of the coupling beam.

[0022] (II) The two buckling-restrained energy-consuming bars and the two viscous dampers in the coupling beam of the present application are arranged in a diamond four-corner structure, which can reduce the size of the buckling-restrained energy-consuming bars and the viscous dampers, thereby reducing the weight, facilitating installation and replacement after damage, reducing repair time and cost, and improving economic efficiency.

[0023] (III) The structure of the viscous damper of the present application can ensure that the SMA material does not exhibit compression buckling, thereby ensuring that the damper can provide self-resetting function; compared with SMA wires, the use of SMA rods in force bearing is more stable, which can significantly reduce residual displacement to provide self-resetting function for the coupling beam; the gear structure can amplify displacement to amplify the speed of the damper, so that the damper also has good energy-dissipation capacity under small earthquakes.

[0024] (IV) The inner rod of the buckling-restrained energy-consuming bar of the present application is in a cross-shaped structure, the two sides of the cross-shaped section have the same stiffness and do not have a weak axis, and have stable multi-wave buckling phenomenon under compression; in addition, the cross-shaped section after section weakening can still match the inner diameter of the smaller circular outer sleeve, so that the spacing between the inner core and the circular outer sleeve is smaller, thereby reducing the friction force between the inner core and the circular outer sleeve. The buckling-restrained energy-consuming bar has good stability, simple structure and easy replacement. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the viscous damper.

[0026] Figure 2 It is a schematic diagram of the gear structure of the viscous damper.

[0027] Figure 3 It is a schematic diagram of the deformation state of the viscous damper, Figure 3 (a) indicates that the viscous damper is in a balanced state, (b) indicates that the viscous damper is in a stretched state, and (c) indicates that the viscous damper is in a contracted state.

[0028] Figure 4 Structure diagram of buckling-restrained damper.

[0029] Figure 5 Structure diagram of buckling-restrained damper.

[0030] Figure 6 Structure diagram of inner rod.

[0031] Figure 7 Structure diagram of outer sleeve.

[0032] Figure 8 Structure diagram of coupling beam with viscous damper and buckling-restrained damper.

[0033] Figure 9 Structure diagram of upper chord.

[0034] Figure 10 Structure diagram of first connecting end.

[0035] Figure 11 Structure diagram of coupling beam with viscous damper and buckling-restrained damper.

[0036] The meanings of the respective reference numerals in the drawings are as follows: 1 - upper viscous damper, 2 - upper buckling-restrained damper, 3 - lower buckling-restrained damper, 4 - lower viscous damper, 5 - left non-dissipative beam segment, 6 - right non-dissipative beam segment, 7 - upper chord, 8 - lower chord, 9 - first hinged member, 10 - second hinged member, 11 - third hinged member, 12 - fourth hinged member, 13 - fifth hinged member, 14 - sixth hinged member, 15 - seventh hinged member, 16 - eighth hinged member, 17 - first connecting end, 18 - second connecting end, 19 - third connecting end, 20 - fourth connecting end.

[0037] 101 - damper cylinder, 102 - damper cover, 103 - piston rod, 104 - piston, 105 - damper medium cavity, 106 - damper baffle, 107 - first SMA rod, 108 - second SMA rod, 109 - gear set cavity, 110 - gear box, 111 - gear rail, 112 - large gear, 113 - guide rod, 114 - small gear, 115 - damper connecting lug, 116 - guide rod connecting lug, 117 - first rod limiting block, 118 - second rod limiting block.

[0038] 201 - outer sleeve, 202 - inner rod, 203 - left pin hole, 204 - right pin hole.

[0039] 701 - square steel pipe concrete, 702 - end plate, 703 - circular lug.

[0040] 1701 - connecting main plate, 1702 - high-strength bolt, 1703 - transverse stiffening rib, 1702 - vertical stiffening rib.

[0041] F represents an external force, and the arrow represents the direction of the external force.

[0042] The technical solutions of the present application are further described below in combination with embodiments. DETAILED DESCRIPTION

[0043] In the present application, SMA refers to shape memory alloy.

[0044] It should be noted that all the components used in the present application, unless otherwise specified, are known components in the art, for example: the inner rod 202 is a known elastic rod in the prior art, preferably a steel rod, a nickel alloy rod, an alloy steel rod or a shape memory alloy rod.

[0045] In accordance with the above technical solutions, the following specific embodiments of the present application are given, it should be noted that the present application is not limited to the following specific embodiments, any equivalent transformation based on the technical solutions of the present application falls within the scope of protection of the present application.

[0046] Example 1

[0047] This embodiment gives a viscous damper, such as Figure 1 and Figure 2As shown, the damper cylinder 101 is closed at one axial end and open at the other axial end, and the open axial end of the damper cylinder 101 is fixedly provided with a damper cover 102; a piston rod 103 is movably arranged in the damper cylinder 101, and the axial end of the piston rod 103 is fixedly provided with a piston 104; the closed space formed by the damper cylinder 101 and a damper baffle 106 is a damping medium cavity 105; the damper baffle 106 is fixedly arranged in the damper cylinder 101, and a through hole is formed in the center of the damper baffle 106; the axial end of the piston rod 103 passes through the through hole in the center of the damper baffle 106 and is located in the damper cylinder 101; a first SMA thin rod 107 and a second SMA thin rod 108 are arranged in the damper cylinder 101; the axial end of the first SMA thin rod 107 is fixedly connected to the closed axial end of the damper cylinder 101, the axial end of the first SMA thin rod 107 passes through the piston 104 and is movably arranged in the piston 104, and the axial end of the first SMA thin rod 107 extending out of the piston 104 is fixedly connected with a first thin rod limiting block 117; the axial end of the second SMA thin rod 108 passes through the piston 104 and is movably arranged in the piston 104, the axial end of the second SMA thin rod 108 extending out of the piston 104 is fixedly connected with a second thin rod limiting block 118, and the axial end of the second SMA thin rod 108 is fixedly connected to the damper baffle 106; the axial end of the first SMA thin rod 107 and the axial end of the second SMA thin rod 108 are oppositely arranged with the center axis of the piston 104 as the symmetry axis.

[0048] As shown in Figure 1 and Figure 2 , the space surrounded by the damper cylinder 101, the damper cover 102 and the damper baffle 106 is a gear set setting cavity 109; a gear box 110 is arranged in the gear set setting cavity 109, the axial end of the gear box 110 is closed and the axial end is open, and the axial end of the gear box 110 is fixedly connected to the axial end of the piston rod 103; a pair of gear tracks 111 are arranged on the inner wall of the gear box 110, and the pair of gear tracks 111 are oppositely arranged with the center axis of the gear box 110 as the symmetry axis, and a large gear 112 is engaged on the gear tracks 111; a guide rod 113 is movably arranged in the gear box 110, a rack is arranged on the axial end of the guide rod 113 and a pair of small gears 114 are engaged, and the pair of small gears 114 are oppositely arranged with the guide rod 113 as the symmetry axis; the large gear 112 and the small gear 114 are fixedly connected and concentrically arranged, one small gear 114 and one large gear 112 together form a gear set, and the guide rod 113 can drive the gear set to rotate after moving in the axial direction, so that the gear set can move in the axial direction on the gear tracks 111.

[0049] In this embodiment, the first thin rod limiting block 117 and the second thin rod limiting block 118 respectively limit the first SMA thin rod 107 and the second SMA thin rod 108. Figure 3 As shown in (a) and (b), when the piston 104 moves to the left, the second SMA rod 108 is stretched due to the limiting effect of the second thin rod limiting block 118, while the length of the first SMA rod 107 remains unchanged. Figure 3 As shown in (a) and (c), when the piston 104 moves to the right relative to the ground, the first SMA rod 107 is stretched due to the limiting effect of the first thin rod limiting block 117, while the length of the second SMA rod 108 remains unchanged. Compared with SMA wire, SMA rods are more stable when subjected to force, and can significantly reduce residual displacement to provide a self-resetting function for the connecting beam.

[0050] In this embodiment, the damping medium cavity 105 is filled with a viscous fluid medium, such as silicone oil. During the reciprocating motion of the piston 104, the silicone oil flows through the gap between the piston 104 and the damper cylinder 101 to achieve frictional energy dissipation and provide additional damping for the connecting beam. The size of the damping medium cavity 105 and the size of the gap between the piston 104 and the damper cylinder 101 affect the energy dissipation effect of the damper.

[0051] In this embodiment, the gear structure consisting of the gear set cavity 109, gear box 110, gear track 111, large gear 112, and small gear 114 can amplify the displacement of the guide rod 113, thereby amplifying the moving speed of the piston 104. This allows the damper to have good energy dissipation capacity even under small and moderate vibrations. The dimensions of the large gear 112 and small gear 114 are selected according to the actual situation, and the ratio of the radii of the large gear 112 and small gear 114 affects the speed amplification factor.

[0052] In this embodiment, the damper baffle 106 supports and guides the piston rod 103; the damper cover 102 supports and guides the guide rod 113.

[0053] As one specific solution in this embodiment, such as Figure 1 As shown, a damper connecting lug 115 is fixedly installed on one axial end of the damper cylinder 101; a through hole is opened at the center of the damper cover 102, and the other axial end of the guide rod 113 passes through the central through hole of the damper cover 102 and extends out of the damper cylinder 101; a guide rod connecting lug 116 is fixedly installed on the other axial end of the guide rod 113. The damper connecting lug 115 and the guide rod connecting lug 116 are used to install the viscous damper in the connecting beam.

[0054] Example 2:

[0055] The embodiment provides a buckling-restrained energy dissipation rod, as shown in the figure. Figures 4 to 7 The outer sleeve 201 is nested with the inner rod 202, the middle section of the inner rod 202 is in a cross shape, and the axial two sections of the inner rod 202 are in a circular shape.

[0056] In the embodiment, the inner rod 202 is a cylindrical rod body with a middle position cut off in a quadrangle, thereby forming a cross-shaped section. When an earthquake occurs, the special-shaped section can fully enter plastic energy dissipation. The cross-sectional area of the inner rod 202 can be increased or decreased to meet different actual use requirements. The outer sleeve 201 can restrain buckling of the inner rod 202 under pressure and protect the inner rod 202.

[0057] As a specific scheme of the embodiment, as shown in the figures, Figure 4 and Figure 6 A left pin hole 203 is formed in the axial one end of the inner rod 202, a right pin hole 204 is formed in the axial other end of the inner rod 202, and the axial two ends of the inner rod 202 are in a circular shape. The left pin hole 203 and the right pin hole 204 are used for mounting the buckling-restrained energy dissipation rod on a coupling beam.

[0058] Embodiment 3

[0059] The embodiment provides a coupling beam with a viscous damper and a buckling-restrained energy dissipation rod, as shown in the figure. Figure 8 The coupling beam comprises parallel upper viscous dampers 1 and lower buckling-restrained energy dissipation rods 3, and parallel upper buckling-restrained energy dissipation rods 2 and lower viscous dampers 4. The upper viscous dampers 1 and the lower viscous dampers 4 are the same in structure, and the upper viscous dampers 1 and the lower viscous dampers 4 adopt the viscous damper in the embodiment 1. The upper buckling-restrained energy dissipation rods 2 and the lower buckling-restrained energy dissipation rods 3 are the same in structure, and the upper buckling-restrained energy dissipation rods 2 and the lower buckling-restrained energy dissipation rods 3 adopt the buckling-restrained energy dissipation rod in the embodiment 2.

[0060] In the embodiment, the bearing capacity of the coupling beam is provided by the upper buckling-restrained energy dissipation rods 2 and the lower buckling-restrained energy dissipation rods 3, and the upper viscous dampers 1 and the lower viscous dampers 4 only provide additional damping.

[0061] In the embodiment, the viscous damper can increase structural damping, reduce seismic acceleration, and also has good energy dissipation capacity under small earthquake action. Compared with SMA wires, the SMA thin rods are more stable as force-bearing structures and can significantly reduce residual displacement, thereby providing a self-resetting function for the coupling beam.

[0062] As a specific scheme of the embodiment, as shown in the figures, Figure 8As shown in the figure, the included angle formed by the upper buckling-restrained energy-absorbing bar 2 and the lower buckling-restrained energy-absorbing bar 3 is a1, the included angle formed by the upper viscous damper 1 and the lower viscous damper 4 is a2, a1 is equal to a2, and a1 and a2 are 30°-60°; the included angle formed by the upper buckling-restrained energy-absorbing bar 2 and the upper viscous damper 1 is b1, the included angle formed by the lower buckling-restrained energy-absorbing bar 3 and the lower viscous damper 4 is b2, b1 is equal to b2, and b1 and b2 are 120°-150°.

[0063] In the embodiment, the rhombic four-corner arrangement can reduce the size of the buckling-restrained energy-absorbing bar and the viscous damper, thereby reducing the weight, facilitating installation and disassembly and replacement after damage, and reducing repair time and cost.

[0064] As a specific solution of the embodiment, as shown in the figure, Figure 8 As shown in the figure, the coupling beam includes a left non-energy-dissipation beam segment 5 and a right non-energy-dissipation beam segment 6, the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 are parallel to each other and arranged along the vertical direction; the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 are hingedly connected with an upper chord 7 and a lower chord 8, the upper chord 7 and the lower chord 8 are parallel to each other and arranged along the horizontal direction; the inner side of the left non-energy-dissipation beam segment 5 is hingedly connected with one end of the upper buckling-restrained energy-absorbing bar 2, the other end of the upper buckling-restrained energy-absorbing bar 2 is hingedly connected to the inner side of the upper chord 7, the inner side of the upper chord 7 is further hingedly connected with one end of the upper viscous damper 1, the other end of the upper viscous damper 1 is hingedly connected to the inner side of the right non-energy-dissipation beam segment 6; the inner side of the right non-energy-dissipation beam segment 6 is further hingedly connected with one end of the lower viscous damper 4, the other end of the lower viscous damper 4 is hingedly connected to the inner side of the lower chord 8, the inner side of the lower chord 8 is further hingedly connected with one end of the lower buckling-restrained energy-absorbing bar 3, and the other end of the lower buckling-restrained energy-absorbing bar 3 is hingedly connected to the inner side of the left non-energy-dissipation beam segment 5.

[0065] In the embodiment, as shown in the figure, Figure 9 The upper chord 7 and the lower chord 8 have the same structure. The upper chord 7 includes a square steel pipe concrete 701, an end plate 702, and a circular ear plate 703, the two ends of the square steel pipe concrete 701 are respectively centrally aligned and welded with the end plate 702 and the circular ear plate 703, and one end plate 702 and one circular ear plate 703 together form a connecting piece.

[0066] In the embodiment, the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 are both conventional ordinary steel beams known in the prior art, and the outer side of the non-energy-dissipation beam segment is fixedly connected to the shear wall. The yield bearing capacity of the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 is greater than the ultimate bearing capacity of the upper chord 7 and the lower chord 8, thereby ensuring that the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 remain elastic.

[0067] As a specific solution of the embodiment, as shown in the figure, Figure 8As shown in the figure, the middle position of the inner side of the left non-energy dissipation beam segment 5 is sequentially provided with a first hinge 9 and a second hinge 10 from top to bottom; the middle position of the inner side of the upper chord 7 is sequentially provided with a third hinge 11 and a fourth hinge 12 from left to right; the middle position of the inner side of the right non-energy dissipation beam segment 6 is sequentially provided with a fifth hinge 13 and a sixth hinge 14 from top to bottom; and the middle position of the inner side of the lower chord 8 is sequentially provided with a seventh hinge 15 and an eighth hinge 16 from left to right.

[0068] In this embodiment, the bearing capacity of the first hinge 9, the second hinge 10, the third hinge 11, the fourth hinge 12, the fifth hinge 13, the sixth hinge 14, the seventh hinge 15 and the eighth hinge 16 is greater than 1.2 times the tensile force or pressure transmitted by the upper viscous damper 1, the upper buckling-restrained energy-dissipation bar 2, the upper buckling-restrained energy-dissipation bar 3 and the lower viscous damper 4, so as to ensure sufficient safety redundancy.

[0069] As a specific scheme of this embodiment, as shown in the figure, Figure 8 As shown in the figure, the top of the inner side of the left non-energy dissipation beam segment 5 is provided with a first connecting end head 17, and the bottom of the inner side of the left non-energy dissipation beam segment 5 is provided with a second connecting end head 18; the top of the inner side of the right non-energy dissipation beam segment 6 is provided with a third connecting end head 19, and the bottom of the inner side of the right non-energy dissipation beam segment 6 is provided with a fourth connecting end head 20; the first connecting end head 17, the second connecting end head 18, the third connecting end head 19 and the fourth connecting end head 20 are oppositely arranged and have the same structure. In this embodiment, the upper chord 7 and the lower chord 8 are fixedly installed through the connecting piece and the first connecting end head 17, the second connecting end head 18, the third connecting end head 19 and the fourth connecting end head 20.

[0070] As a specific scheme of this embodiment, the left pin hole 203 and the right pin hole 204 of the upper buckling-restrained energy-dissipation bar 2 are both provided with a pin, the one end of the upper buckling-restrained energy-dissipation bar 2 is hinged in the first hinge 9 through the left pin hole 203 and the pin, and the other end of the upper buckling-restrained energy-dissipation bar 2 is hinged in the third hinge 11 through the right pin hole 204 and the pin; the left pin hole 203 and the right pin hole 204 of the lower buckling-restrained energy-dissipation bar 3 are both provided with a pin, the one end of the lower buckling-restrained energy-dissipation bar 3 is hinged in the second hinge 10 through the left pin hole 203 and the pin, and the other end of the lower buckling-restrained energy-dissipation bar 3 is hinged in the seventh hinge 15 through the right pin hole 204 and the pin.

[0071] As a specific scheme of this embodiment, as shown in the figure, Figure 10As shown, the first connecting end 17 comprises a connecting main plate 1701, four high-strength bolts 1702, two horizontal stiffening ribs 1703 and two vertical stiffening ribs 1702, the connecting main plate 1701 of the connecting end is connected with the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 respectively through the high-strength bolts 1702, the two horizontal stiffening ribs 1703 and the two vertical stiffening ribs 1702 are symmetrically welded on the other side of the connecting main plate, the distance between the two horizontal stiffening ribs 1703 is greater than the height of the connecting piece, and the distance between the two vertical stiffening ribs 1702 is greater than the thickness of the connecting piece. The bearing capacity provided by the high-strength bolts 1702 in the connecting end should be greater than 1.2 times of the horizontal tensile force borne by the connecting end, so as to ensure sufficient safety redundancy.

[0072] As a specific scheme of the embodiment, the damper connecting ear plate 115 of the upper viscous damper 1 and the fourth hinge 12 are hingedly connected through a pin, the guide rod connecting ear plate 116 of the upper viscous damper 1 and the fifth hinge 13 are hingedly connected through a pin, the damper connecting ear plate 115 of the lower viscous damper 4 and the eighth hinge 16 are hingedly connected through a pin, and the guide rod connecting ear plate 116 of the lower viscous damper 4 and the sixth hinge 14 are hingedly connected through a pin.

[0073] The working process and principle of the application are as follows:

[0074] As shown in the figure, Figure 11 As shown in the figure, under the action of the earthquake, the relative positions of the left non-energy-dissipation beam segment 5 and the right non-energy-dissipation beam segment 6 change, so that the relative positions of the upper chord 7 and the lower chord 8 also change, and then the upper buckling-restrained energy-dissipation bar 2 and the lower viscous damper 4 are elongated due to stretching, and the lower buckling-restrained energy-dissipation bar 3 and the upper viscous damper 1 are shortened due to compression. Only the upper viscous damper 1, the upper buckling-restrained energy-dissipation bar 2, the lower buckling-restrained energy-dissipation bar 3 and the lower viscous damper 4 enter the plastic state to dissipate energy in the above deformation process, so the damage is only concentrated on the upper viscous damper 1, the upper buckling-restrained energy-dissipation bar 2, the lower buckling-restrained energy-dissipation bar 3 and the lower viscous damper 4, which is convenient for post-earthquake repair and replacement.

Claims

1. A coupled wall with viscous damper and buckling restrained energy dissipating link, characterized by, It comprises upper viscous damper (1) and lower buckling restrained damper (3) arranged in parallel, and upper buckling restrained damaper (2) and lower viscous damper (4) arranged in parallel; the upper viscous damper (1) and the lower viscous damper (4) are the same structure, and the upper buckling restrained damper (2) and the lower buckling restrained damper (3) are the same structure; The upper viscous damper (1) comprises a damper cylinder (101), the axial one end of the damper cylinder (101) is closed and the axial other end is open, the axial one end of the damper cylinder (101) is fixedly provided with a damper cover (102); the piston rod (103) is movably arranged in the damper cylinder (101), the axial one end of the piston rod (103) is fixedly provided with a piston (104), and the closed space surrounded by the damper cylinder (101) and the damper baffle (106) is a damping medium cavity (105); the damper baffle (106) is fixedly arranged in the damper cylinder (101), a through hole is formed in the center of the damper baffle (106), and the axial other end of the piston rod (103) passes through the through hole in the center of the damper baffle (106) and is located in the damper cylinder (101); The first SMA thin rod (107) and the second SMA thin rod (108) are arranged in the damper cylinder (101); the axial one end of the first SMA thin rod (107) is fixedly connected to the closed axial one end of the damper cylinder (101), the axial other end of the first SMA thin rod (107) passes through the piston (104) and is movably arranged in the piston (104), the axial other end of the first SMA thin rod (107) extending out of the piston (104) is fixedly connected with a first thin rod limiting block (117); the axial one end of the second SMA thin rod (108) passes through the piston (104) and is movably arranged in the piston (104), the axial one end of the second SMA thin rod (108) extending out of the piston (104) is fixedly connected with a second thin rod limiting block (118), and the axial other end of the second SMA thin rod (108) is fixedly connected to the damper baffle (106); the axial other end of the first SMA thin rod (107) and the axial one end of the second SMA thin rod (108) are oppositely arranged with the center axis of the piston (104) as the symmetry axis; The space surrounded by the damper cylinder (101), the damper cover (102) and the damper baffle (106) is a gear set setting cavity (109); the gear set setting cavity (109) is provided with a gear box (110), one axial end of the gear box (110) is closed and the other axial end is open, and the one axial end of the gear box (110) is fixed on the other axial end of the piston rod (103); a pair of gear tracks (111) are arranged on the inner wall of the gear box (110), the pair of gear tracks (111) are arranged oppositely with the central axis of the gear box (110) as the axis of symmetry, and a large gear (112) is engaged on the gear tracks (111); a guide rod (113) is movably arranged in the gear box (110), a rack is arranged on one axial end of the guide rod (113) and engaged with a pair of small gears (114), and the pair of small gears (114) are arranged oppositely with the guide rod (113) as the axis of symmetry. The large gear (112) and the small gear (114) are fixedly connected and concentrically arranged, one small gear (114) and one large gear (112) jointly form a gear set, and the guide rod (113) can drive the gear set to rotate after moving in the axial direction, so that the gear set can move on the gear tracks (111) along the axial direction.

2. The coupled wall with viscous damper and buckling restrained energy dissipating brace of claim 1, wherein, One axial end of the damper cylinder (101) is fixedly provided with a damper connecting lug (115); a through hole is formed in the center of the damper cover (102), the other axial end of the guide rod (113) penetrates through the central through hole of the damper cover (102) and extends out of the damper cylinder (101), and a guide rod connecting lug (116) is fixedly arranged on the other axial end of the guide rod (113).

3. The coupled wall with viscous damper and buckling restrained energy dissipating link of claim 1, wherein, The upper buckling-restrained energy-dissipating bar (2) comprises an outer sleeve (201), both ends of the outer sleeve (201) are open, and an inner rod (202) is nested in the outer sleeve (201); the middle section of the inner rod (202) has a cross section in the shape of a cross, and the axial sections of the inner rod (202) have circular cross sections.

4. The coupled wall with viscous damper and buckling restrained energy dissipating brace of claim 3, wherein, A left pin hole (203) is formed in one axial end of the inner rod (202), a right pin hole (204) is formed in the other axial end of the inner rod (202), the axial ends of the inner rod (202) remain circular cross sections, and the left pin hole (203) and the right pin hole (204) are used for mounting the buckling-restrained energy-dissipating bar on a coupling beam.

5. The coupled wall with viscous damper and buckling restrained energy dissipating link of claim 1, wherein, The included angle formed by the upper buckling-restrained energy-dissipating bar (2) and the lower buckling-restrained energy-dissipating bar (3) is α1, the included angle formed by the upper viscous damper (1) and the lower viscous damper (4) is α2, α1 is equal to α2; the included angle formed by the upper buckling-restrained energy-dissipating bar (2) and the upper viscous damper (1) is β1, and the included angle formed by the lower buckling-restrained energy-dissipating bar (3) and the lower viscous damper (4) is β2, β1 is equal to β2.

6. The coupled wall with viscous damper and buckling restrained energy dissipating link of claim 1, wherein, The left non-energy dissipation beam segment (5) and the right non-energy dissipation beam segment (6) are hingedly connected with the upper chord (7) and the lower chord (8) between the left non-energy dissipation beam segment (5) and the right non-energy dissipation beam segment (6), and the upper chord (7) and the lower chord (8) are arranged in parallel and along the transverse direction; One end of the upper flexural buckling restrained damper (2) is hingedly connected to the inner side of the left non-energy dissipation beam segment (5), the other end of the upper flexural buckling restrained damper (2) is hingedly connected to the inner side of the upper chord (7), one end of the upper viscous damper (1) is also hingedly connected to the inner side of the upper chord (7), the other end of the upper viscous damper (1) is hingedly connected to the inner side of the right non-energy dissipation beam segment (6); one end of the lower viscous damper (4) is also hingedly connected to the inner side of the right non-energy dissipation beam segment (6), the other end of the lower viscous damper (4) is hingedly connected to the inner side of the lower chord (8), one end of the lower flexural buckling restrained damper (3) is also hingedly connected to the inner side of the lower chord (8), and the other end of the lower flexural buckling restrained damper (3) is hingedly connected to the inner side of the left non-energy dissipation beam segment (5).

7. The coupled wall with viscous damper and buckling restrained energy dissipating link of claim 6, wherein, The top of the inner side of the left non-energy dissipation beam segment (5) is provided with a first connecting end head (17), and the bottom of the inner side of the left non-energy dissipation beam segment (5) is provided with a second connecting end head (18); the top of the inner side of the right non-energy dissipation beam segment (6) is provided with a third connecting end head (19), and the bottom of the inner side of the right non-energy dissipation beam segment (6) is provided with a fourth connecting end head (20); the first connecting end head (17), the second connecting end head (18), the third connecting end head (19) and the fourth connecting end head (20) are arranged in pairs and have the same structure.

8. A viscous damper characterized by, The damper cylinder (101) is closed at one axial end and open at the other axial end, and the open axial end of the damper cylinder (101) is fixedly provided with a damper cover (102); the damper cylinder (101) is movably provided with a piston rod (103), and the axial end of the piston rod (103) is fixedly provided with a piston (104); a closed space formed by the damper cylinder (101) and a damper baffle (106) is a damping medium cavity (105); the damper baffle (106) is fixedly arranged in the damper cylinder (101), a through hole is formed in the center of the damper baffle (106), and the other axial end of the piston rod (103) passes through the through hole in the center of the damper baffle (106) and is located in the damper cylinder (101); The damper cylinder (101) is provided with a first SMA rod (107) and a second SMA rod (108); one axial end of the first SMA rod (107) is fixedly connected to the closed axial end of the damper cylinder (101), the other axial end of the first SMA rod (107) penetrates through the piston (104) and is movably arranged in the piston (104), and a first rod limiting block (117) is fixedly connected to the other axial end of the first SMA rod (107) which extends out of the piston (104); one axial end of the second SMA rod (108) penetrates through the piston (104) and is movably arranged in the piston (104), a second rod limiting block (118) is fixedly connected to the axial end of the second SMA rod (108) which extends out of the piston (104), and the other axial end of the second SMA rod (108) is fixedly connected to the damper baffle (106); the other axial end of the first SMA rod (107) and the axial end of the second SMA rod (108) are oppositely arranged with the center axis of the piston (104) as the symmetry axis; The space surrounded by the damper cylinder (101), the damper cover (102) and the damper baffle (106) is a gear set setting cavity (109); the gear set setting cavity (109) is provided with a gear box (110), one axial end of the gear box (110) is closed and the other axial end is open, and the axial end of the gear box (110) is fixed to the other axial end of the piston rod (103); a pair of gear tracks (111) are arranged on the inner wall of the gear box (110), the pair of gear tracks (111) are oppositely arranged with the center axis of the gear box (110) as the symmetry axis, and a large gear (112) is engaged on the gear track (111); a guide rod (113) is movably arranged in the gear box (110), a rack is arranged on one axial end of the guide rod (113) and engages a pair of small gears (114), and the pair of small gears (114) are oppositely arranged with the guide rod (113) as the symmetry axis; The large gear (112) and the small gear (114) are fixedly connected and concentrically arranged, one small gear (114) and one large gear (112) together constitute a gear set, and the guide rod (113) can drive the gear set to rotate after moving in the axial direction, so that the gear set can move on the gear track (111) in the axial direction.

9. The viscous damper of claim 8, wherein The closed axial end of the damper cylinder (101) is fixedly provided with a damper connecting lug plate (115); a through hole is formed in the center of the damper cover (102), the other axial end of the guide rod (113) penetrates through the center through hole of the damper cover (102) and extends out of the damper cylinder (101), and a guide rod connecting lug plate (116) is fixedly arranged on the other axial end of the guide rod (113).

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