A cantilevered-sway wall reinforcement system with energy dissipation device

Abstract

The application discloses an energy-dissipation outrigger-sway wall reinforcing system with an energy-dissipation device, and belongs to the technical field of engineering structure development and anti-seismic reinforcement. The system comprises a hinged support, a shear wall, a horizontal truss, an outrigger and an energy-dissipation device. The hinged support is arranged on an existing structure foundation, the shear wall is arranged on the hinged support and can swing around a swing shaft, the horizontal truss connects the shear wall and a beam of the existing structure, the outrigger is fixed at a preset height of the shear wall, and the energy-dissipation device is hinged between the outrigger and a column of the existing structure to absorb energy. The system is further provided with an amplification assembly, which can significantly increase the deformation displacement of the energy-dissipation device. The energy-dissipation device has a double amplification effect of outrigger amplification and lever secondary amplification, and the energy-dissipation efficiency is greatly improved. In addition, the reinforcing system of the application is additionally arranged on the existing structure, and the dynamic characteristics of the existing structure are not changed, the system has the characteristics of convenient construction and assembly type construction, and has good technical effects and application prospects.

Description

Technical Field

[0001] This invention relates to the field of engineering structural system development and seismic reinforcement technology, and in particular to an outrigger-swaying wall reinforcement system with an energy dissipation device. Background Technology

[0002] With the increasing service life of many existing structures in my country's construction sector, and the continuous updating and upgrading of seismic design codes, some existing structures can no longer meet current seismic fortification requirements, exhibiting significant deficiencies in their safety and collapse resistance under earthquake loads. Therefore, effective seismic reinforcement of existing structures has become a crucial issue for enhancing urban resilience and protecting people's lives and property.

[0003] As an effective seismic-resistant structural system, the swing wall system releases the rotational constraints between the wall base and the foundation, allowing the wall to swing as a whole, thereby effectively controlling the overall deformation mode of the structure and avoiding concentrated failure of weak stories. However, traditional swing wall systems still have certain limitations: they lack efficient, long-stroke energy-dissipating components, and existing energy-dissipating devices often have insufficient energy dissipation capacity due to limited displacement amplitude, making it difficult to fully utilize the deformation generated by the swing wall's swing. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an outrigger-swaying wall reinforcement system with an energy dissipation device to solve the problems of limited working stroke and insufficient energy dissipation capacity of the energy dissipation device in existing swaying wall systems. This system adds an outrigger to the swaying wall system and installs an energy dissipation device at the end of the outrigger. It fully utilizes the rotational deformation of the swaying wall to drive the outrigger to rotate, causing vertical displacement at the end of the outrigger, thereby amplifying the stroke of the energy dissipation device. Furthermore, by setting an amplification component to further amplify the stroke of the energy dissipation device, the energy dissipation efficiency of the energy dissipation device and the seismic energy dissipation capacity of the reinforcement system are improved.

[0005] In one aspect of the invention, a cantilever-sway wall reinforcement system with an energy dissipation device is provided, comprising:

[0006] A hinged support, located at the bottom of a building structure, includes a base, a connecting part, and a hinged structure. The base is disposed on the foundation of the building structure, and the connecting part is hingedly connected to the base through the hinged structure.

[0007] A shear wall is installed on the connection part of the hinge support and can swing around a swing axis perpendicular to the outer wall of the existing structure. The wall surface of the shear wall is parallel to the outer wall of the existing structure and extends vertically upward to the preset height of the existing structure.

[0008] A horizontal truss connects the shear wall to the beams of the existing structure.

[0009] An outrigger, rigidly connected to a predetermined height in the shear wall, extends laterally on the horizontal plane and its end is connected to a column of the existing structure via an energy dissipation device; and

[0010] An energy dissipation device, hinged between the outrigger and the column of the existing structure, is configured to absorb the energy of external loads through its own deformation displacement.

[0011] In a preferred embodiment, the reinforcement system further includes an amplification component disposed between the energy dissipation device and the extension arm or between the energy dissipation device and the column of the existing structure, and configured such that the deformation displacement of the energy dissipation device is greater than the swing displacement of the extension arm relative to the column of the existing structure.

[0012] In a preferred embodiment, one end of the energy dissipation device is hinged to a first hinge point at the end of the extension arm, and the amplification assembly includes:

[0013] The amplifying lever includes a first arm and a second arm fixedly connected at one end and forming a preset angle with each other. The length of the first arm is less than the length of the second arm, and the other end of the second arm is hinged to the other end of the energy dissipation device.

[0014] The connecting rod has one end hinged to the second hinge point at the end of the extender arm, and the other end hinged to the other end of the first arm; and

[0015] The bracket is fixedly mounted on the column of the existing structure and hinged to the intersection of the first and second arms of the amplifying lever.

[0016] In a preferred embodiment, the outrigger has a truss structure including an upper chord, a lower chord, and a plurality of web members connecting the upper chord and the lower chord. The first hinge point is located at the end of either the upper chord or the lower chord, and the second hinge point is located at the other end of either the upper chord or the lower chord.

[0017] In a preferred embodiment, the upper chord is longer than the lower chord, the first hinge point is located at the end of the lower chord, the second hinge point is located at the end of the upper chord, and the web member is connected between the first hinge point and the second hinge point.

[0018] In a preferred embodiment, the amplifying lever is a triangular plate structure, wherein two sides of the triangular plate structure form the first arm and the second arm, respectively.

[0019] In a preferred embodiment, the energy dissipation device includes a viscous damper with a velocity index α of 0.2 to 2.0.

[0020] In a preferred embodiment, the shear wall is a concrete shear wall with prestressed tendon ducts running through it along its length. The connecting portion has coaxial prestressed tendon ducts at corresponding positions. Prestressed steel bars pass through the prestressed tendon ducts in the shear wall and the connecting portion, and after being stretched, are anchored at both ends in the shear wall and the connecting portion, respectively. This allows the shear wall to be positioned on the connecting portion, thereby combining the shear wall and the hinged support to form a rocking wall structure.

[0021] In a preferred embodiment, the outrigger is fixedly disposed at a height of 30%-50% of the shear wall from bottom to top, and the outrigger has an axisymmetric structure relative to the shear wall.

[0022] In a preferred embodiment, the shear wall extends vertically upward to the top floor of the existing structure, and the horizontal truss connects the shear wall to the beams of the existing structure at each floor.

[0023] Therefore, the various embodiments of the outrigger-swing wall reinforcement system with energy dissipation device provided by the present invention have at least one of the following beneficial effects: The present invention can fully utilize the bottom rotational degree of freedom of the swing wall structure, convert the rotation into vertical deformation at the far end of the outrigger through the outrigger, and further set an amplification component inside the outrigger to amplify the amplified displacement again and transmit it to the energy dissipation device, forming a dual amplification path of outrigger amplification and amplification component amplification, thereby significantly increasing the working stroke of the energy dissipation device and greatly improving its energy dissipation efficiency and the additional damping ratio of the overall structure; In addition, the present invention sets the outrigger-swing wall to work in coordination with the existing structure, without significantly increasing the structural stiffness and mass, and has little impact on the natural period and mode shape of the existing structure, effectively avoiding the stiffness abrupt change or dynamic characteristic mismatch problems that may be caused by traditional reinforcement methods; The reinforcement system can be placed as a whole on the periphery of the building or in a specific location without the need for large-scale demolition of the original components, and the prestressed prefabricated connection method is also convenient for on-site implementation, suitable for the functional protection and rapid reinforcement needs of existing structures. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall elevation structure of the outrigger-swaying wall reinforcement system with energy dissipation device provided by the present invention, connecting it with the existing structure;

[0025] Figure 2 A schematic diagram of the outrigger-swaying wall reinforcement system with energy dissipation device provided by the present invention;

[0026] Figure 3 An enlarged structural schematic diagram of the hinged support in the outrigger-swaying wall reinforcement system with energy dissipation device provided by the present invention;

[0027] Figure 4 A partial structural diagram of the outrigger, amplifying lever, and viscous damper in the outrigger-swing wall reinforcement system with energy dissipation device provided by the present invention;

[0028] Figure 5 A schematic diagram of the working state of the swing wall structure in the outrigger-swing wall reinforcement system with energy dissipation device provided by the present invention.

[0029] Figure 6 A schematic diagram of the overall working state of the outrigger-swaying wall reinforcement system with energy dissipation device provided by the present invention;

[0030] Figure 7 This is a force-displacement hysteresis curve of the viscous energy dissipator under cyclic loading at different velocity indices (α) of the viscous damper of the outrigger-swing wall reinforcement system with energy dissipation device of the present invention.

[0031] Figure label:

[0032] 1-Hinged support, 11-Foundation, 12-Hinged shaft, 13-Connection; 2-Shear wall; 3-Horizontal truss; 4-Outrigger, 41-Upper chord, 42-Web member, 43-Lower chord; 5-Column of existing structure; 6-Beam of existing structure; 7-Plate of existing structure; 8-Damper; 9-Amplifying lever, 901-First arm, 902-Second arm; 101-Connecting rod, 102-Corner. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments of the present invention are preferred technical solutions and do not constitute a limitation on the scope of protection of the present invention. Various modified embodiments derived from the core technical concept of the present invention are all included in the protection scope of the present invention.

[0034] like Figure 1-7 As shown, this invention discloses an outrigger-swaying wall reinforcement system with an energy dissipation device. It mainly includes a swaying wall structure composed of a hinged support 1 and a shear wall 2, a horizontal truss 3 connecting the shear wall 2 and the beam 6 of the existing structure, an outrigger 4 fixedly installed on the shear wall 2, and an energy dissipation device connecting the outrigger 4 and the column 5 of the existing structure. With the above components working together, the reinforcement system of this invention can realize the seismic reinforcement and energy dissipation and vibration reduction functions of the existing structure.

[0035] Specifically, when seismic loads are applied to the existing structure, because the horizontal truss 3 and the outrigger 4 form an integrated and collaborative force-bearing system with the existing structure through connection, when the seismic load is transferred to the rocking wall structure, such as Figure 5As shown, in the swaying wall structure, the shear wall 2 oscillates around the hinged support 1, and then, through the horizontal truss 3, it in turn drives the coordinated deformation of each floor of the existing structure, effectively suppressing the concentration of inter-story displacement. Further... Figure 6 As shown, the outrigger 4 moves synchronously with the rocking wall structure through a rigid connection. At the same time, the energy dissipation device connected between the outrigger 4 and the existing column 5 will dissipate energy under tension and compression along its own axis, so that the energy of the seismic load is converted into the mechanical energy and thermal energy of the energy dissipation device. This ensures that the rocking wall structure, horizontal truss 3, outrigger 4, existing beam 6 and existing column 5 all maintain structural integrity (or remain in an elastic state), avoid irreversible damage to the main structure, and achieve controllable damage.

[0036] like Figure 2-3 As shown, the hinged support 1 of the present invention includes a base part 11, a hinge shaft 12, and a connecting part 13. The base part 11 is fixed to the foundation surface of the existing structure, providing reliable bottom support, while the connecting part 13 is swayably disposed on the base part for connecting the shear wall 2. The hinge shaft 12 passes through the shaft holes corresponding to the base part 11 and the connecting part 13, providing a degree of freedom of sway. Figure 1-2 As shown, the shear wall 2 is parallel to the outer wall of the existing structure, extends vertically upward to a predetermined height of the existing structure, and preferably extends to the top floor of the existing structure. Thus, the shear wall 2 achieves bottom hinge constraint through the hinged support 1, forming a swing wall structure that can rotate around a swing axis perpendicular to the outer wall surface, optimizing the overall force distribution mode by releasing the bottom rotation constraint.

[0037] In a preferred embodiment, to achieve a reliable connection between the shear wall 2 and the hinged support 1 and form a swaying wall structure, the shear wall 2 is a concrete shear wall with pre-reserved through-holes of prestressed tendons along its length. The connecting part 13 also has coaxially connected prestressed tendon ducts at corresponding positions. During construction, the prestressed steel bars are tensioned and then inserted into the two ducts, with both ends anchored inside the shear wall 2 and the connecting part 13, respectively. This ensures that the shear wall 2 is firmly positioned on the connecting part 13 and can freely sway around the hinge axis 12, thus forming a complete swaying wall structure together with the hinged support 1. Of course, in addition to the prestressed tendon ducts, the shear wall 2 also has transverse stirrups to ensure its crack resistance and load-bearing capacity. Depending on the actual engineering requirements, the shear wall 2 can also be a lattice steel structure wall.

[0038] To achieve coordinated deformation in the out-of-plane direction, the shear wall 2 is connected to the beams 6 of each floor of the existing structure through a horizontal truss 3. The horizontal truss 3 is a rigid steel structure truss, one end of which can be fixed to the side of the shear wall 2 by bolts, and the other end can be connected to the beams 6 of the existing structure by welding or bolts. This effectively transmits shear force, constrains the relative displacement of the swaying wall and the existing structure in the out-of-plane direction, and ensures coordinated deformation between the two.

[0039] Based on this, the present invention employs a rigid connection to install outriggers 4 within the height range of 30% to 50% of the shear wall 2 from bottom to top, or at a preferred constraint position determined by mechanical analysis of the existing structure, such as within the height range of 35% to 45%, or at a height of 40%. The plane containing the length and width of the outriggers 4 is parallel to the swingable plane of the shear wall, and the outriggers 4 extend laterally in the horizontal direction, establishing a connection with the columns 5 of the existing structure. The present invention efficiently converts the axial stiffness of the columns 5 of the existing structure into rotational constraints on the swing wall structure through the outriggers 4, thereby improving the structure's energy dissipation capacity and deformation control capability.

[0040] Furthermore, this invention hinges the energy dissipation device between the outrigger 4 and the existing column 5, allowing it to absorb the load between them through its own deformation and displacement. Compared to the energy dissipation device located between the swing wall and the existing structure in a traditional swing wall system, this invention can significantly amplify the displacement by utilizing the lateral extension length of the outrigger 4, enabling the energy dissipation device located at the end of the outrigger 4 to obtain a larger displacement, thereby improving energy dissipation efficiency or reducing the layout cost of the energy dissipation device at the same energy dissipation level.

[0041] The energy dissipation device of the present invention preferably employs a viscous fluid damper (VFD). The internal structure of the viscous fluid damper 8 is filled with a high-viscosity damping medium (such as silicone oil, hydraulic oil, etc.). Energy is dissipated through viscous resistance generated by the relative motion of the piston and the damping medium. Both ends of the viscous fluid damper are equipped with hinged joints (using ball joints or universal joints) to facilitate flexible connection with the outrigger 4 or the existing column 5, avoiding component damage caused by rigid collisions. Because the viscous fluid damper 8 has excellent energy dissipation performance, durability, and stability, it can stably absorb energy under different ground motion velocities, adapting to various working conditions such as strong and moderate earthquakes. Correspondingly, depending on the seismic resistance level, spatial layout, cost budget, and other requirements of the project, the energy dissipation device can also use alternative structures such as metal dampers, friction dampers, and viscoelastic dampers.

[0042] In this invention, the velocity index α of the viscous damper 8 is between 0.2 and 2.0. In some preferred embodiments, the velocity coefficient α of the viscous damper 8 is preferably greater than 1, thereby causing the damping force F to change more rapidly with the increase of the load velocity v (F∝vα), resulting in higher energy dissipation efficiency. Figure 7As shown, the force-displacement hysteresis curves of the viscous damper 8 under cyclic loading are presented with different velocity indices (α). The horizontal axis represents displacement (unit: mm), indicating the amplitude of the expansion and contraction displacement of the energy dissipator during cyclic loading, while the vertical axis represents force (unit: kN), indicating the magnitude of the damping force generated by the energy dissipator. The three curves correspond to velocity indices α = 0.45 (solid line, nonlinear viscous damper), α = 1.00 (dashed line, linear viscous damper), and α = 1.20 (dotted line, superlinear viscous damper), respectively. The area enclosed by the hysteresis curves represents the energy dissipated by the energy dissipator in a complete loading cycle; the larger the area, the stronger the energy dissipation capacity of the energy dissipator. It can be seen that this invention, by using a viscous damper with a velocity coefficient α greater than 1, can significantly amplify the energy dissipation corresponding to displacement under strong seismic loads.

[0043] In a preferred embodiment, to significantly improve the energy dissipation efficiency of the energy dissipation device, the present invention also includes an amplification component. This amplification component is disposed between the energy dissipation device and the existing structure's column 5. Its construction allows the deformation displacement of the energy dissipation device to be greater than the swing displacement of the extension arm 4 relative to the existing structure's column 5, thus achieving a secondary amplification of the displacement. For example... Figure 4 As shown, the amplification assembly includes an amplification lever 9, a connecting rod 101, and a bracket 102. The amplification lever 9 includes a first arm 901 and a second arm 902 fixedly connected at one end and forming a preset angle with each other. The length of the first arm 901 is shorter than the length of the second arm 902, thus achieving amplification using the lever principle. One end of the connecting rod 101 is hinged to the second hinge point at the end of the extension arm 4, and the other end is hinged to the other end of the first arm 901. The bracket 102 is fixedly mounted on the column 5 of the existing structure and hinged to the intersection of the first arm 901 and the second arm 902 on the amplification lever 9. Based on this structure, one end of the energy dissipation device is hinged to the first hinge point at the end of the extension arm 4, and the other end is hinged to the other end of the second arm 902, realizing the connection between the energy dissipation device and the amplification assembly.

[0044] like Figure 1 , 2 As shown in Figures 4 and 6, the amplifying lever 9 is preferably a triangular plate structure with higher structural strength. The two sides of this triangular plate structure form the first arm 901 and the second arm 902, respectively. One end of the first arm 901 and the second arm 902 are fixedly connected, forming a preset angle between them, preferably 90°, to facilitate force transmission and structural arrangement. The length of the first arm 901 is less than the length of the second arm 902, with a preferred length ratio of 1:2 to 1:3. According to the lever principle, this can achieve a displacement amplification of 2 to 3 times. Correspondingly, the amplifying component can also use alternative structures such as a single-arm lever type, a linkage group type, or a diamond-shaped amplifying mechanism.

[0045] like Figure 4As shown, in a preferred embodiment, the outrigger 4 adopts a truss structure, specifically including an upper chord 41, a lower chord 43, and multiple web members 42 connecting the two. The web members 42 include straight web members and diagonal web members. The upper chord 41, web members 42, and lower chord 43 can jointly construct multiple triangular truss units, ensuring the overall rigidity and deformation resistance of the outrigger 4. Two hinge points are provided at the end of the outrigger 4, namely a first hinge point and a second hinge point. The first hinge point is located at the end of the lower chord 43, and the second hinge point is located at the end of the upper chord 41. The length of the upper chord 41 is greater than that of the lower chord 43. This structural design allows for a reasonable lever arm difference at the end of the outrigger 4, providing a basis for the installation and displacement amplification of the amplification components. In other embodiments, the positions of the first hinge point and the second hinge point on the lower chord 43 and the upper chord 41 can be interchanged accordingly. Alternatively, when the outrigger 4 is an outrigger using a concrete structure, the positions of the hinge points can be flexibly arranged while ensuring that the distance between the first hinge point and the second hinge point meets the requirements.

[0046] Therefore, the overall connection relationship of the amplification assembly of the present invention is as follows: one end of the connecting rod 101 is hinged to the second hinge point (the end of the upper chord rod 41) at the end of the extension arm 4 through a hinge joint, and the other end is hinged to the other end (the end away from the fixed connection end) of the first arm 901 of the triangular plate amplification lever 9; the bracket 102 is fixedly installed on the column 5 of the existing structure and is fixed by welding steel plates or bolting. The free end of the bracket 102 is hinged to the intersection of the first arm 901 and the second arm 902 on the amplification lever 9 (i.e., the fixed connection vertex of the triangular plate), and this intersection is the rotation fulcrum of the amplification lever 9.

[0047] like Figure 4 and Figure 6 As shown, when the existing structure encounters an earthquake, the rocking wall structure swings around the hinged support 1, and the outrigger 4 generates a clockwise rotation angle θ. At this time, one end of the energy dissipation device will be subjected to a leftward force along its length direction applied by the first hinge point, while the connecting rod 101 will be subjected to an upward force along its length direction applied by the second hinge point. The corbel 102 is fixedly installed on the column of the existing structure. Since the deformation of the column under tension and compression in the vertical direction is minimal, it can be assumed that it basically does not undergo deformation displacement. That is, the intersection point of the first arm 901 and the second arm 902 of the amplifying lever 9 remains unchanged. Then, the rotation of the first arm 901 around the intersection point will be amplified by the second arm 902 into a rightward force along its length direction on the other end of the energy dissipation device. That is, the energy dissipation device is compressed and begins to dissipate energy under the influence of forces in opposite directions at both ends. In the second half of the swing cycle, the rocking wall structure swings back, and the outrigger 4 generates a counterclockwise rotation angle γ. Correspondingly, the energy dissipation device will be stretched and begin to dissipate energy. As the energy dissipation device repeatedly consumes energy during the tensile and compressive oscillation process, the rocking wall structure will eventually tend to stabilize, thus completely mitigating the impact of seismic loads on the existing structure.

[0048] In summary, when an existing structure encounters seismic forces, the reinforcement system provided by this invention can realize an energy-dissipating chain that enables the swing wall to swing around its axis, the outrigger to transmit and amplify the energy, the amplification component to amplify the energy again, and the energy-dissipating and vibration-damping mechanism. This is further explained below:

[0049] After the earthquake, a horizontal load is generated in the existing structure. At this time, under the connection of the horizontal truss 3, the shear wall 2 in the rocking wall structure rotates around the hinge axis 12 of the hinge support 1, releasing the constraint at the bottom of the wall and preventing serious damage to the shear wall 2 itself. At the same time, it regulates the overall deformation mode of the existing structure and prevents concentrated damage to the weak layer. Subsequently, the rotation of the shear wall 2 drives the outrigger 4 to move synchronously. Since the outrigger 4 is a truss structure and extends laterally, the rotational deformation of the shear wall 2 is converted into vertical displacement at the end of the outrigger 4 (at the first hinge point and the second hinge point), realizing a first amplification of the displacement.

[0050] The vertical displacement at the end of the outrigger 4 is transmitted through two paths: firstly, the first hinge point directly drives one end of the energy dissipation device to move; secondly, the second hinge point transmits the displacement to the amplification component through the connecting rod 101, driving the amplification component to rotate around the rotation fulcrum (bracket hinge point). This amplification of the deformation displacement is then transmitted to the other end of the energy dissipation device via a lever principle. Subsequently, under the influence of forces at both ends, the energy dissipation device generates viscous resistance to dissipate energy through the relative motion of its damping medium and the piston, reducing the seismic response (such as displacement and acceleration) of the existing structure and enhancing its seismic performance and collapse resistance, thus meeting the seismic design requirements of the project. Simultaneously, in the out-of-plane direction, the horizontal truss 3 constrains the relative displacement between the shear wall 2 and the existing structure, ensuring coordinated deformation between the two, preventing out-of-plane instability, and further improving the overall stability of the system.

[0051] Therefore, this invention combines the rotation mechanism of the rocking wall structure with the primary amplification of deformation due to the outrigger length, and the secondary amplification of deformation due to the internal levers of the outrigger, forming a dual amplification effect. This significantly improves the stroke and energy dissipation efficiency of the viscous damper, thereby effectively enhancing the seismic performance of the overall structure. This reinforcement system does not alter the original structure's dynamic characteristics and possesses excellent technical effectiveness and application prospects.

Claims

1. A cantilever-swing wall reinforcement system with an energy dissipation device, characterized in that, include: Hinged support (1), located at the bottom of the building structure, includes a base, a connecting part and a hinge structure, wherein the base is set on the foundation of the building structure and the connecting part is hingedly connected to the base through the hinge structure; Shear wall (2) is installed on the connection part of the hinge support (1) and can swing around a swing axis perpendicular to the outer wall of the existing structure. The wall surface of the shear wall (2) is parallel to the outer wall of the existing structure and extends vertically upward to the preset height of the existing structure. A horizontal truss (3) connects the shear wall (2) to the beam (6) of the existing structure; The outrigger (4) is fixedly installed at a predetermined height on the shear wall (2) via a rigid connection node, extends laterally on the horizontal plane, and its end is connected to the column (5) of the existing structure via an energy dissipation device; and The energy dissipation device, hinged between the outrigger (4) and the column (5) of the existing structure, is configured to absorb the energy of the external load through its own deformation displacement.

2. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 1, characterized in that, The reinforcement system also includes an amplification component, which is disposed between the energy dissipation device and the extension arm (4) or between the energy dissipation device and the column (5) of the existing structure, and is configured such that the deformation displacement of the energy dissipation device is greater than the swing displacement of the extension arm (4) relative to the column (5) of the existing structure.

3. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 2, characterized in that, One end of the energy dissipation device is hinged to the first hinge point at the end of the extension arm (4), and the amplification component includes: The amplifying lever (9) includes a first arm (901) and a second arm (902) fixedly connected at one end and forming a preset angle with each other. The length of the first arm (901) is less than the length of the second arm (902), and the other end of the second arm (902) is hinged to the other end of the energy dissipation device. A connecting rod (101) is hinged at one end to a second hinge point at the end of the extension arm (4), and at the other end to the other end of the first arm (901); and The cow leg (102) is fixedly mounted on the column (5) of the existing structure and hinged to the intersection of the first arm (901) and the second arm (902) of the amplifying lever (9).

4. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 3, characterized in that, The outrigger (4) has a truss structure, which includes an upper chord (41), a lower chord (43), and a plurality of web members (42) connecting the upper chord (41) and the lower chord (43). The first hinge point is located at the end of either the upper chord (41) or the lower chord (43), and the second hinge point is located at the other end of either the upper chord (41) or the lower chord (43).

5. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 4, characterized in that, The upper chord (41) is longer than the lower chord (43), the first hinge point is located at the end of the lower chord (43), the second hinge point is located at the end of the upper chord (41), and the web member (42) is connected between the first hinge point and the second hinge point.

6. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 3, characterized in that, The amplifying lever (9) has a triangular plate structure, in which two sides form the first arm (901) and the second arm (902) respectively.

7. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 1, characterized in that, The energy dissipation device includes a viscous damper (8) with a velocity index α of 0.2 to 2.

0.

8. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 1, characterized in that, The shear wall (2) is a concrete shear wall, and is equipped with prestressed tendon ducts running through it along its length. The connecting part is equipped with coaxial prestressed tendon ducts at corresponding positions. The prestressed steel bars pass through the prestressed tendon ducts in the shear wall (2) and the connecting part (13), and are anchored at both ends in the shear wall (2) and the connecting part (13) after being stretched, so that the shear wall (2) is set on the connecting part (13), and thus the shear wall (2) and the hinged support (1) are combined to form a rocking wall structure.

9. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 1, characterized in that, The extension arm (4) is fixedly installed at a height of 30%-50% from bottom to top on the shear wall (2), and the extension arm (4) has an axisymmetric structure relative to the shear wall (2).

10. The outrigger-swaying wall reinforcement system with energy dissipation device according to claim 1, characterized in that, The shear wall (2) extends vertically upward to the top floor of the existing structure, and the horizontal truss (3) connects the shear wall (2) to the beams (6) of the existing structure at each floor of the existing structure.

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