Novel assembly type viscous damper for seismic reinforcement of beam-column joint

Abstract

The novel assembly type viscous damper comprises connecting rods, a connecting plate and a hydraulic buffering device, a frame beam and a frame column are each connected with one connecting rod in a hinged mode, and the two connecting rods are both connected to the connecting plate in a hinged mode; the hydraulic buffering device comprises a piston rod and a sealed cabin, the sealed cabin is hinged to the connecting joint of the frame beam and the frame column, high-damping liquid is arranged in the sealed cabin, one end of the piston rod is inserted into the sealed cabin, and the other end of the piston rod is hinged to the connecting plate. The device has the advantages that the device is connected with the frame beams and the frame columns through the hinge structures, so that the device can be conveniently installed in an existing structure; the connecting rod converts the change of the connecting angle of the frame beam and the frame column into the movement of the piston rod, so that the high-damping liquid in the sealed cabin generates damping force to resist the change trend of the connecting angle of the frame beam and the frame column, and the anti-seismic property is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of earthquake-resistant structures, and in particular relates to a novel assembled viscous damper for earthquake-resistant reinforcement of beam-column nodes. Background Art

[0002] In areas with high seismic fortification intensity, building structures face severe seismic tests. On the other hand, as time goes by, seismic reinforcement of existing buildings is very necessary. In the seismic reinforcement construction of existing buildings, the beam-column joints are the key parts to ensure the integrity, and the reinforcement of the joints is particularly important. It is necessary to propose a convenient and efficient reinforcement method for the beam-column connection nodes.

[0003] In the prior art, arranging dampers in existing structures is an effective seismic reinforcement method. However, the damper reinforcement method in the prior art lacks convenience, has low reinforcement efficiency and has many limitations.

[0004] Therefore, there is an urgent need for a damper for seismic reinforcement of beam-column nodes, which aims to improve the seismic performance of existing building nodes and fully assemble them on site to effectively improve the reinforcement efficiency. Summary of the invention

[0005] The object of the present invention is to overcome the deficiencies in the prior art and to provide a novel assembled viscous damper for seismic reinforcement of beam-column joints.

[0006] The novel assembled viscous damper for seismic reinforcement of beam-column joints comprises: a connecting rod, a connecting plate and a hydraulic buffer device, wherein a connecting rod is hingedly connected to the frame beam and the frame column respectively, and both connecting rods are hingedly connected to the connecting plate;

[0007] The hydraulic buffer device includes a piston rod and a sealed cabin. The sealed cabin is hinged at the connection node between the frame beam and the frame column. High damping liquid is arranged in the sealed cabin. One end of the piston rod is inserted in the sealed cabin, and the other end is hingedly connected to the connecting plate.

[0008] Preferably, one end of the piston rod inserted into the sealed cabin is provided with a plurality of damping amplification components, which are in the form of sheets perpendicular to the length direction of the piston rod and are used to increase the contact area between the piston rod and the high damping liquid.

[0009] Preferably, the novel assembled viscous damper is arranged below the frame beam.

[0010] Preferably, the two connecting rods are symmetrically arranged on both sides of the hydraulic buffer device, hingedly connected to the two ends of the connecting plate, and the piston rod is hinged at the center of the connecting plate.

[0011] The method for using the new assembled viscous damper for seismic reinforcement of beam-column joints includes the following steps for installing the new assembled viscous damper:

[0012] Step 1: Connecting ear plates are respectively arranged on the side of the frame column, the lower side of the frame beam, and the connection nodes between the frame beam and the frame column;

[0013] Step 2: hinge one end of the two connecting rods to the connecting ear plates on the side of the frame column and the lower side of the frame beam respectively;

[0014] Step 3: Connect one end of the sealed cabin of the hydraulic buffer device to the connecting ear plate at the connection node between the frame beam and the frame column;

[0015] Step 4: Adjust the extension length of the piston rod, bring the two connecting rods and the free ends of the piston rod together in a straight line, and hinge them to the connecting plates respectively.

[0016] Preferably, when the connection angle between the frame beam and the frame column changes, the angle between the two connecting rods changes, the connecting plate drives the extension length of the piston rod to change, and the end of the piston rod inserted in the sealed cabin and the high-damping liquid generate a damping force to suppress the piston movement of the piston rod.

[0017] Preferably, the straight line described in step four is perpendicular to the length direction of the piston rod; the connecting plate is provided with three reserved holes for connecting steel plates, which are respectively used for hinged connection with the two connecting rods and the free ends of the piston rod.

[0018] The beneficial effects of the present invention are:

[0019] 1) The present invention is connected to the frame beam and the frame column through a hinged structure, which is convenient for installation in an existing structure; the connecting rod converts the change of the connection angle of the frame beam and the frame column into the movement of the piston rod, thereby causing the high-damping liquid in the sealed cabin to generate a damping force to resist the change trend of the connection angle of the frame beam and the frame column, thereby improving the seismic performance.

[0020] 2) The present invention provides several sheet-like damping amplification components at one end of the piston rod inserted into the sealed cabin to increase the contact area between the piston rod and the high-damping liquid in the direction of movement, thereby significantly improving the energy dissipation capacity of the new damper and protecting the main structure from serious damage during an earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure diagram of the new assembled viscous damper used for seismic reinforcement of beam-column joints;

[0022] Figure 2 This is an exploded view of the connecting steel plate part of the new assembled viscous damper used for seismic reinforcement of beam-column joints;

[0023] Figure 3 This is a disassembled diagram of the hydraulic buffer device;

[0024] Figure 4 This is an exploded view of the connected steel plates;

[0025] Figure 5 It is a structural schematic diagram of the hydraulic device;

[0026] Figure 6 This is a schematic diagram of the hydraulic device disassembly.

[0027] Explanation of the reference numerals: connecting rod 1, piston rod 2, sealed cabin 3, connecting plate 4, frame beam 5, frame column 6, connecting ear plate 7, piston connecting rod 21, damping amplification component 22, reserved holes 41 in the connecting steel plate, connecting bolts 42. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0029] Embodiment 1

[0030] As an example, Figures 1 to 6 As shown, this new type of assembled viscous damper for seismic reinforcement of beam-column joints is installed on the existing connection structure of frame beam 5 and frame column 6, specifically, installed below the frame beam 5.

[0031] The novel assembled viscous damper for seismic reinforcement of beam-column joints comprises: a connecting rod 1, a connecting plate 4 and a hydraulic buffer device. A connecting rod 1 is hingedly connected to the frame beam 5 and the frame column 6 respectively, and both connecting rods 1 are hingedly connected to the connecting plate 4.

[0032] The hydraulic buffer device includes a piston rod 2 and a sealed cabin 3. A flat ear plate and a bolt hole are provided at one end of the sealed cabin 3, which is hinged at the connection node of the frame beam 5 and the frame column 6. High-damping liquid is provided in the sealed cabin 3. One end of the piston rod 2 is inserted into the sealed cabin 3, and the other end is hingedly connected to the connecting plate 4.

[0033] The two connecting rods 1 and the piston rod 2 are both hingedly connected to the same connecting plate 4. The connecting plate 4 is specifically two long strips of splints with three reserved holes 41 for connecting steel plates. The ends of the two connecting rods 1 and the piston rod 2 are flat and of equal thickness and are provided with corresponding bolt holes. The bolt holes of the two connecting rods 1 correspond to the reserved holes 41 for connecting steel plates at both ends of the connecting plate 4, and the bolt holes of the piston rod 2 correspond to the reserved holes 41 for connecting steel plates in the center of the connecting plate 4.

[0034] Embodiment 2

[0035] As another embodiment, this embodiment 2 proposes, on the basis of embodiment 1, a more specific new type of assembled viscous damper for seismic reinforcement of beam-column joints.

[0036] like Figure 5 and Figure 6 As shown, one end of the piston rod 2 inserted in the sealed cabin 3 is provided with several damping amplification components 22, and the damping amplification components 22 are in the form of sheets perpendicular to the length direction of the piston rod 2. In this embodiment, the main body of the piston rod 2 is in the form of a flat rod, and six damping amplification components 22 are provided on both sides of a certain length of the portion of the piston rod 2 inserted in the sealed cabin 3, so that when the piston rod 2 undergoes piston motion, the contact area between the piston rod 2 and the high-damping liquid is increased, making it easier to interact with the high-damping liquid to achieve energy consumption.

[0037] The length of the region where the damping amplification component 22 is set limits the piston movement range of the piston rod 2, and thus also acts as a limiter. Figure 6 As shown, a narrow opening is provided at the end of the sealed cabin 3, through which only the exposed portion of the piston rod 2 can pass.

[0038] The novel assembled viscous damper is arranged below the frame beam 5 .

[0039] Two connecting rods 1 are symmetrically arranged on both sides of the hydraulic buffer device. The two connecting rods 1 are of equal length and are hingedly connected at both ends of the connecting plate 4. In this embodiment, the angle between the two connecting rods 1 is an acute angle. The piston rod 2 is hingedly connected at the center of the connecting plate 4, so that the angle change of the frame beam 5 and the frame column 6 is most effectively transmitted to the connecting plate 4. The angle at the connection between the connecting plate 4 and the piston rod 2 can be kept as vertical as possible, which is convenient for converting the force into the force of inserting the piston rod 2 into the sealed cabin 3 or pulling it out from the sealed cabin 3, and can fully utilize the energy dissipation effect of the high damping liquid.

[0040] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0041] Embodiment 3

[0042] As another embodiment, this embodiment 3 proposes, based on the embodiments 1 and 2, a method for installing the novel assembled viscous damper for seismic reinforcement of beam-column joints, comprising the following steps:

[0043] Step 1: Connecting ear plates 7 are respectively arranged on the side of the frame column 6, the lower side of the frame beam 5, and the connection nodes between the frame beam 5 and the frame column 6; the connecting ear plates 7 are arranged in pairs, and a space is formed in the middle for the end of the connecting rod 1 or the sealed cabin 3 to be inserted and hinged.

[0044] Step 2: hinge one end of the two connecting rods 1 to the connecting ear plates 7 on the side of the frame column 6 and the lower side of the frame beam 5 respectively;

[0045] Step 3: connect one end of the sealed cabin 3 of the hydraulic buffer device to the connecting ear plate 7 at the connection node between the frame beam 5 and the frame column 6;

[0046] Step 4: slowly pull out the piston rod 2, adjust the length of the piston rod 2 extending from the sealed cabin 3, converge the free ends of the two connecting rods 1 and the piston rod 2 on a straight line, align the bolt holes and the three reserved holes 41 of the connecting steel plates on the connecting plate 4, respectively, use the connecting bolts 42 to penetrate the reserved holes 41 of the connecting steel plates and the bolt holes to achieve a hinged connection with the connecting plate 4.

[0047] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiments 1 and 2 can be referenced to each other and will not be described in detail in this application.

[0048] Embodiment 4

[0049] As another embodiment, this embodiment 4 proposes, on the basis of embodiments 1 to 3, a method for providing earthquake resistance of the novel assembled viscous damper for earthquake-resistant reinforcement of beam-column joints when encountering an earthquake:

[0050] When the frame structure encounters an earthquake, relative rotational deformation will occur between the frame beam 5 and the frame column 6. As the relative rotational angle between the frame beam 5 and the frame column 6 is generated, the two connecting rods 1 are squeezed or pulled apart, the angle changes, and the connecting plate 4 moves under the support force of the connecting rod 1, thereby driving the extension length of the piston rod 2 to change. The end of the piston rod 2 inserted in the sealed cabin 3 and the high-damping liquid generate a damping force to suppress the piston movement of the piston rod 2.

[0051] When the installed new assembled viscous damper for seismic reinforcement of beam-column joints is damaged, the new assembled viscous damper can be removed by reversing the installation method of Example 3. Subsequently, the new assembled viscous damper can be reinstalled to continue seismic protection of the existing structure.

[0052] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiments 1 to 3 can be referenced to each other and will not be described in detail in this application.

[0053] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A new type of assembled viscous damper for seismic reinforcement of beam-column joints, characterized in that: include: Connecting rod, connecting plate and hydraulic buffer device, a connecting rod is hingedly connected to the frame beam and the frame column respectively, and both connecting rods are hingedly connected to the connecting plate; The hydraulic buffer device includes a piston rod and a sealed cabin. The sealed cabin is hinged at the connection node between the frame beam and the frame column. High damping liquid is arranged in the sealed cabin. One end of the piston rod is inserted in the sealed cabin, and the other end is hingedly connected to the connecting plate.

2. The novel assembled viscous damper for seismic reinforcement of beam-column joints according to claim 1 is characterized in that: One end of the piston rod inserted into the sealed cabin is provided with several damping amplification components, which are in the form of sheets perpendicular to the length direction of the piston rod and are used to increase the contact area between the piston rod and the high damping liquid.

3. The novel assembled viscous damper for seismic reinforcement of beam-column joints according to claim 1 is characterized in that: The new assembled viscous damper is arranged under the frame beam.

4. The novel assembled viscous damper for seismic reinforcement of beam-column joints according to claim 1 is characterized in that: The two connecting rods are symmetrically arranged on both sides of the hydraulic buffer device, are hingedly connected to the two ends of the connecting plate, and the piston rod is hingedly connected to the center of the connecting plate.

5. The method for using the novel assembled viscous damper for seismic reinforcement of beam-column joints as claimed in any one of claims 1 to 4, characterized in that: The installation process of the new fabricated viscous damper includes the following steps: Step 1: Connecting ear plates are respectively arranged on the side of the frame column, the lower side of the frame beam, and the connection nodes between the frame beam and the frame column; Step 2: hinge one end of the two connecting rods to the connecting ear plates on the side of the frame column and the lower side of the frame beam respectively; Step 3: Connect one end of the sealed cabin of the hydraulic buffer device to the connecting ear plate at the connection node between the frame beam and the frame column; Step 4: Adjust the extension length of the piston rod, bring the two connecting rods and the free ends of the piston rod together in a straight line, and hinge them to the connecting plates respectively.

6. The method for using the new assembled viscous damper for seismic reinforcement of beam-column joints according to claim 5 is characterized in that: When the connection angle between the frame beam and the frame column changes, the angle between the two connecting rods changes, the connecting plate drives the extension length of the piston rod to change, and the end of the piston rod inserted in the sealed cabin and the high-damping liquid generate damping force to suppress the piston movement of the piston rod.

7. The method for using the new assembled viscous damper for seismic reinforcement of beam-column joints according to claim 5 is characterized in that: The straight line described in step 4 is perpendicular to the length direction of the piston rod; the connecting plate is provided with three reserved holes for connecting steel plates, which are respectively used for hinged connection with the two connecting rods and the free ends of the piston rod.

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