Point-claw type energy-dissipating universal column base node device for structural wind-resistant columns and its installation method

Abstract

The present invention relates to a point-claw type energy-dissipating universal column base node device for a structural wind-resistant column and an installation method thereof. This point-claw type energy-dissipating universal column base node device for a structural wind-resistant column includes: a pre-embedded part, a universal rotating spherical hinge, and an energy-dissipating damping device. The pre-embedded part includes an anchor rod and a solid short steel pipe. The top surface of the solid short steel pipe is the support base plate of the universal rotating spherical hinge, and a spherical crown-shaped depression is provided in the center of the support base plate; a hydraulic displacement monitoring device is provided between the support base plate and the support top plate; the energy-dissipating damping device includes an upper end plate, a thin solid steel pipe, a hollow steel pipe, and a resetable damper. The beneficial effects of the present invention are: being assembled, ensuring convenient installation and replaceability in case of damage; the node energy dissipation has a self-resetting function, reducing the damage caused by wind loads and improving the service life; each branch is fully stressed and has strong independence.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering design, and particularly relates to a point-claw type energy-dissipating universal column base node device for a structural wind-resistant column and an installation method thereof. Background Technique

[0002] Large-span space structures have the characteristics of beautiful shape, fast construction speed, large usable area, good economic benefits, etc., and are widely promoted and applied in actual projects. However, large-span space steel structures are typical wind-sensitive structures, with characteristics such as small damping, light mass, and large flexibility. During use, they are easily affected by external wind loads, resulting in large structural deformations, damages, and even failures. To improve the wind resistance performance of large-span space structures, wind-resistant columns are often set at the edges of large-span space structures to overcome their wind uplift effects.

[0003] At present, the innovation of connection nodes for wind-resistant columns mainly focuses on the connection nodes between wind-resistant columns and roof covers, as well as connection nodes with crossbeams, etc. Most of the column base nodes for the connection between wind-resistant columns and foundations adopt traditional hinge or rigid connection methods, and there are the following main disadvantages:

[0004] 1) The connection nodes adopt hinge or rigid connection, and the energy-dissipating ability of the wind-resistant column under strong wind dynamic action is poor;

[0005] 2) The column top is connected to the truss through a slotted hole connecting plate or a spring plate, and all the roof loads are borne by the rigid frame. The wind-resistant column cannot bear the vertical load transmitted from the upper rigid frame; at the same time, the load of the cantilever roof is increased, and the width of the cornice is restricted;

[0006] 3) The branches of traditional wind-resistant columns are mostly connected integrally by intersecting connection at the column bottom, and then connected to the support through the same end plate; however, the stress forms of the branches of the wind-resistant column are not the same. When the combined connection of the branches fails at the node, it is not easy to maintain or replace the components, and the reparability is weak;

[0007] 4) Most of the components of traditional wind-resistant columns are connected by welding, with a large amount of overall hoisting work, high requirements for construction machinery, low installation accuracy, and high construction risks. Summary of the Invention

[0008] The purpose of the invention is to overcome the deficiencies in the prior art and provide a point-claw type energy-dissipating universal column base node device for a structural wind-resistant column and an installation method thereof.

[0009] This point-claw type energy-dissipating universal column base node device for a structural wind-resistant column is characterized by comprising: a pre-embedded part, a universal rotating ball hinge, and an energy-dissipating damping device;

[0010] The embedded part includes an anchor rod and a solid short steel pipe. Several anchor rods are provided at the bottom end of the solid short steel pipe; the top surface of the solid short steel pipe is the support base plate of a universal rotating spherical hinge, and a spherical crown-shaped depression is provided in the center of the support base plate; the universal rotating spherical hinge further includes a spherical crown steel lining plate and a support top plate. The spherical crown bottom of the spherical crown steel lining plate is connected to the bottom surface of the support top plate, and the spherical crown top of the spherical crown steel lining plate is connected to the depression of the support base plate; the support base plate and the support top plate are also connected by bolts, and a hydraulic displacement monitoring device is provided between the support base plate and the support top plate;

[0011] The energy dissipation damping device includes an upper end plate, a thin solid steel pipe, a hollow steel pipe, and a resetable damper; the bottom of the hollow steel pipe is connected to the top surface of the support top plate, the bottom of the upper end plate is connected to the thin solid steel pipe, an auxiliary part is provided at the top of the thin solid steel pipe, the bottom section of the thin solid steel pipe and the hollow steel pipe are connected in a sleeve shape, and the top surface of the hollow steel pipe abuts against the bottom surface of the auxiliary part; a lower limit piece, a resetable damper, and an upper limit piece are sequentially sleeved outside the hollow steel pipe from bottom to top, and a wire-pulling type displacement meter is provided between the upper end plate and the support top plate.

[0012] Preferably: the spherical crown height of the spherical crown steel lining plate is greater than the depth of the spherical crown-shaped depression in the center of the support base plate.

[0013] Preferably: a protective pad is further provided between the surface of the spherical crown-shaped depression in the center of the support base plate and the spherical crown steel lining plate. The protective pad is made of a self-lubricating material, and both sides of the protective pad are respectively attached to the spherical crown surfaces of the support base plate and the spherical crown steel lining plate.

[0014] Preferably: the inner diameter of the hollow steel pipe is equal to the outer diameter of the thin solid steel pipe, and the auxiliary part is made of an elastic material.

[0015] Preferably: the upper end plate and the column body part of the column foot are fixedly connected through a flange structure and bolts.

[0016] Preferably: both the hydraulic displacement monitoring device and the wire-pulling type displacement meter are connected with an alarm module.

[0017] The installation method of the point-claw type energy dissipation universal column foot node device of this structural wind-resistant column is characterized by including the following steps:

[0018] S1. After determining the angles of each branch, connect the anchor rods on the embedded parts of each branch to the steel bars of the column foot connection foundation respectively, and then pour concrete to integrate the embedded parts of each branch and the foundation;

[0019] S2. Connect the spherical crown steel lining plate and the support top plate, connect the spherical crown surface of the spherical crown steel lining plate and the support base plate, and connect the support base plate and the support top plate through bolts;

[0020] S3. Connect the hollow steel pipe and the support top plate, connect the thin solid steel pipe and the upper end plate, successively install the lower limit piece, the resetable damper, and the upper limit piece outside the hollow steel pipe, then insert the thin solid steel pipe into the hollow steel pipe, and make the top surface of the hollow steel pipe abut against the bottom surface of the auxiliary part;

[0021] S4. Connect the upper end plates of each branch to the column body part of the column foot;

[0022] S5. Install a hydraulic displacement monitoring device in the universal rotating ball hinge device of each branch, and install a wire-pulling linear displacement gauge in the energy-dissipating damping device.

[0023] Preferably, in step S2: Before connecting the support bottom plate and the spherical crown steel liner, lay a protective pad on the support bottom plate, and then connect the spherical crown steel liner so that both sides of the protective pad are respectively attached to the support bottom plate and the spherical crown steel liner.

[0024] Preferably, in step S3: Calculate the deformation range of the resetable damper according to the design parameter value of the energy-dissipating damping device, and then adjust the distance between the lower limit piece and the upper limit piece according to the maximum deformation value of the resetable damper.

[0025] Preferably: It is also possible to first complete the assembly of each branch in steps S2 to S5, and then perform step S1. After connecting the steel bars of all branches and the column foot connection foundation, concrete pouring is carried out.

[0026] The beneficial effects of the present invention are:

[0027] 1) The point-claw type energy-dissipating universal column foot node device of the structural wind-resistant column adopts an assembled type, ensuring convenient installation and replaceability in case of damage, and solving the problems of high difficulty and high cost in replacing the column foot node.

[0028] 2) It is provided with a universal rotating ball hinge, which can meet the rotation of the wind-resistant column in any wind direction at the node. An energy-dissipating damping device can be installed at the node, enabling the wind-resistant column to dissipate energy sufficiently when generating displacement and rotation under the action of wind load, reducing the displacement and rotation amplitude, and meeting the deformation self-adaptation of the column foot node under different load forms, realizing the self-resetting function of node energy dissipation, reducing the damage caused by wind load, and improving the service life.

[0029] 3) It is provided with a hydraulic displacement monitoring device and a wire-pulling displacement gauge, and both the hydraulic displacement monitoring device and the wire-pulling displacement gauge are connected with an alarm module. When the displacement and rotation amplitude reach a certain limit, an automatic alarm is carried out, realizing the intelligent early warning function of the deformation and damage of the column foot node, facilitating the replacement of each part inside the tapered energy-dissipating column foot node device, and improving the safety.

[0030] 4) Each branch of the point-claw type energy-dissipating universal column base joint device is fully stressed, has strong independence, and will not affect other branches when a single branch is damaged, effectively improving the overall economic benefits and solving the stress problem of the existing wind-resistant column branches. Description of the Drawings

[0031] Figure 1 It is an elevation view of the point-claw type energy-dissipating universal column base joint device of the structural wind-resistant column;

[0032] Figure 2 It is a detailed drawing of a single assembled energy-dissipating column base joint;

[0033] Figure 3 It is a schematic diagram of the connection method between the auxiliary part and the thin solid steel pipe;

[0034] Figure 4 It is a schematic diagram of the hollow steel pipe.

[0035] Description of the reference numerals: anchor rod 1, solid short steel pipe 2, support base plate 3, protective pad 4, spherical crown steel liner 5, support top plate 6, bolt 7, hydraulic displacement monitoring device 8, upper end plate 9, auxiliary part 10, thin solid steel pipe 11, hollow steel pipe 12, resetable damper 13, upper limit piece 14, lower limit piece 15, wire-pulling type displacement gauge 16. Detailed Embodiment

[0036] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0037] Embodiment 1

[0038] As an embodiment, as Figure 1 and Figure 2 shown, a point-claw type energy-dissipating universal column base joint device of a structural wind-resistant column, three branches are jointly connected to the column base to connect the foundation, including a pre-embedded part, a universal rotating ball hinge and an energy-dissipating damping device;

[0039] The embedded part includes an anchor rod 1 and a solid short steel pipe 2. Several anchor rods 1 are provided at the bottom end of the solid short steel pipe 2. The top surface of the solid short steel pipe 2 is the support base plate 3 of a universal rotating ball hinge. A spherical crown-shaped depression is provided in the center of the support base plate 3. The universal rotating ball hinge further includes a spherical crown steel liner 5 and a support top plate 6. The support top plate 6 is made of cast steel. The spherical crown bottom of the spherical crown steel liner 5 is connected to the bottom surface of the support top plate 6, and the spherical crown top of the spherical crown steel liner 5 is connected to the depression of the support base plate 3. And the spherical crown height of the spherical crown steel liner 5 is greater than the depth of the spherical crown-shaped depression in the center of the support base plate 3. A protective pad 4 is also provided between the surface of the spherical crown-shaped depression in the center of the support base plate 3 and the spherical crown steel liner 5. The protective pad 4 is made of a self-lubricating material, specifically polytetrafluoroethylene. The two sides of the protective pad 4 are respectively attached to the spherical crown surfaces of the support base plate 3 and the spherical crown steel liner 5 to reduce the wear between the support base plate 3 and the spherical crown steel liner 5 during the rotation of the universal rotating ball hinge.

[0040] The support base plate 3 and the support top plate 6 are also connected by four bolts 7. The bolts 7 are high-strength bolts. A hydraulic displacement monitoring device 8 is provided between the support base plate 3 and the support top plate 6. The hydraulic displacement monitoring device 8 is connected to an alarm module. When the rotation angle of the universal rotating ball hinge is too large, resulting in the damage of the universal rotating ball hinge, an alarm will be issued to remind to replace the device.

[0041] The energy dissipation damping device includes an upper end plate 9, a thin solid steel pipe 11, a hollow steel pipe 12 and a resetable damper 13. Threads are provided on the outer surface of the hollow steel pipe 12, and the bottom of the hollow steel pipe 12 is connected to the top surface of the support top plate 6.

[0042] The top end of the upper end plate 9 and the column part of the column foot are fixedly connected by a flange structure and bolts. The bottom end of the upper end plate 9 is connected to the thin solid steel pipe 11. The thin solid steel pipe 11 is arranged inside the hollow steel pipe 12, and the inner diameter of the hollow steel pipe 12 is equal to the outer diameter of the thin solid steel pipe 11, so that the thin solid steel pipe 11 and the hollow steel pipe 12 are connected in a nested manner with the inner and outer surfaces in contact. An auxiliary part 10 is provided at the top of the thin solid steel pipe 11. When the bottom section of the thin solid steel pipe 11 and the hollow steel pipe 12 are connected in a nested manner, the top surface of the hollow steel pipe 12 abuts against the bottom surface of the auxiliary part 10. The auxiliary part 10 is made of an elastic material and can adapt to displacements and vibrations within a certain range.

[0043] A lower limit piece 15, a resetable damper 13 and an upper limit piece 14 are successively sleeved on the outer surface of the hollow steel pipe 12 from bottom to top. The upper limit piece 14 and the lower limit piece 15 can control the maximum deformation of the resetable damper 13. A wire-type displacement gauge 16 is provided between the upper end plate 9 and the support top plate 6. The wire-type displacement gauge 16 is connected to an alarm module. When the energy dissipation damping device reaches the failure displacement, an alarm will be issued to remind to replace the device.

[0044] Embodiment 2

[0045] As another embodiment, an installation method of the point-claw type energy-dissipating universal column base joint device of the structural wind-resistant column proposed in the first embodiment is given, which specifically includes the following steps:

[0046] S1. After determining the angles of each branch, connect the anchor bolts on the embedded parts of each branch to the steel bars of the column base connection foundation respectively, and then pour concrete to connect the embedded parts of each branch and the foundation into one body;

[0047] S2. Connect the spherical crown steel liner 5 and the support top plate 6, lay the protective pad 4 on the support bottom plate 3, and then connect the spherical crown steel liner 5, so that both sides of the protective pad 4 are respectively attached to the support bottom plate 3 and the spherical crown steel liner 5, and connect the support bottom plate 3 and the support top plate 6 through bolts 7;

[0048] S3. Connect the hollow steel pipe 12 and the support top plate 6, connect the thin solid steel pipe 11 and the upper end plate 9, install the lower limit piece 15, the resetable damper 13, and the upper limit piece 14 on the outside of the hollow steel pipe 12 in sequence, calculate the deformation range of the resetable damper 13 according to the design parameter values of the energy-dissipating damping device, and then adjust the distance between the lower limit piece 15 and the upper limit piece 14 according to the maximum deformation value of the resetable damper 13. Then, insert the thin solid steel pipe 11 into the hollow steel pipe 12, and the top surface of the hollow steel pipe 12 abuts against the bottom surface of the auxiliary part 10;

[0049] S4. Connect the upper end plates 9 of each branch to the column body part of the column base by means of flange connection;

[0050] S5. Install the hydraulic displacement monitoring device 8 in the universal rotating ball hinge device of each branch, and install the linear displacement meter 16 in the energy-dissipating damping device.

[0051] Embodiment Three

[0052] As another embodiment, this embodiment proposes that the assembled tapered energy-dissipating column base joint device for the large-span steel structure wind-resistant column proposed in the first embodiment can also be installed by the following method:

[0053] Referring to the installation method of the point-claw type energy-dissipating universal column base joint device of the structural wind-resistant column proposed in the second embodiment, the assembly of each branch in steps S2 to S5 of the second embodiment can be completed first, and then step S1 of the second embodiment can be implemented to connect the steel bars of all branches and the column base connection foundation, and finally concrete is poured to fix each branch and the column base connection foundation.

Claims

1. A point-claw type energy-dissipating universal column base joint device for a structural wind-resistant column, characterized in that, it includes: a pre-embedded part, a universal rotating ball hinge and an energy-dissipating damping device; The pre-embedded part includes anchor bolts (1) and solid short steel pipes (2). Several anchor bolts (1) are provided at the bottom end of the solid short steel pipe (2); the top surface of the solid short steel pipe (2) is the support base plate (3) of the universal rotating ball hinge, and a spherical crown-shaped depression is provided in the center of the support base plate (3); the universal rotating ball hinge also includes a spherical crown steel liner (5) and a support top plate (6). The spherical crown bottom of the spherical crown steel liner (5) is connected to the bottom surface of the support top plate (6), and the spherical crown top of the spherical crown steel liner (5) is connected to the depression of the support base plate (3); the support base plate (3) and the support top plate (6) are also connected by bolts (7), and a hydraulic displacement monitoring device (8) is provided between the support base plate (3) and the support top plate (6); The energy-dissipating damping device includes an upper end plate (9), a thin solid steel pipe (11), a hollow steel pipe (12) and a resetable damper (13); the bottom of the hollow steel pipe (12) is connected to the top surface of the support top plate (6), the bottom of the upper end plate (9) is connected to the thin solid steel pipe (11), an auxiliary part (10) is provided at the top of the thin solid steel pipe (11), the bottom section of the thin solid steel pipe (11) and the hollow steel pipe (12) are connected in a sleeve shape, and the top surface of the hollow steel pipe (12) abuts against the bottom surface of the auxiliary part (10); a lower limit piece (15), a resetable damper (13) and an upper limit piece (14) are sequentially sleeved on the outside of the hollow steel pipe (12) from bottom to top, and a wire-pulling type displacement gauge (16) is provided between the upper end plate (9) and the support top plate (6); the spherical crown height of the spherical crown steel liner (5) is greater than the depth of the spherical crown-shaped depression in the center of the support base plate (3); a protective pad (4) is also provided between the surface of the spherical crown-shaped depression in the center of the support base plate (3) and the spherical crown steel liner (5). The protective pad (4) is made of self-lubricating material, and both sides of the protective pad (4) are respectively attached to the spherical crown surfaces of the support base plate (3) and the spherical crown steel liner (5).

2. The point-claw type energy-dissipating universal column base joint device for a structural wind-resistant column according to claim 1, characterized in that: the inner diameter of the hollow steel pipe (12) is equal to the outer diameter of the thin solid steel pipe (11), and the auxiliary part (10) is made of elastic material.

3. The point-claw type energy-dissipating universal column base joint device for a structural wind-resistant column according to claim 1, characterized in that: the upper end plate (9) and the column body part of the column base are fixedly connected by a flange structure and bolts.

4. The point-claw type energy-dissipating universal column base joint device for a structural wind-resistant column according to claim 1, characterized in that: both the hydraulic displacement monitoring device (8) and the wire-pulling type displacement gauge (16) are connected with an alarm module.

5. The installation method of the point-claw type energy-dissipating universal column base joint device for a structural wind-resistant column as claimed in claim 1, characterized in that, it includes the following steps: S1. After determining the angles of each branch, connect the anchor bolts on the pre-embedded parts of each branch to the steel bars of the column base connection foundation respectively, and then pour concrete to connect the pre-embedded parts of each branch and the foundation into one body; S2. Connect the spherical crown steel liner (5) and the support top plate (6), connect the spherical crown surface of the spherical crown steel liner (5) and the support bottom plate (3), and connect the support bottom plate (3) and the support top plate (6) with bolts (7); S3. Connect the hollow steel pipe (12) and the support top plate (6), connect the thin solid steel pipe (11) and the upper end plate (9), sequentially install the lower limit piece (15), the resetable damper (13), and the upper limit piece (14) outside the hollow steel pipe (12), then insert the thin solid steel pipe (11) into the hollow steel pipe (12), and make the top surface of the hollow steel pipe (12) abut against the bottom surface of the auxiliary part (10); S4. Connect the upper end plates (9) of each branch to the column body part of the column foot; S5. Install the hydraulic displacement monitoring device (8) in the universal rotating ball hinge device of each branch, and install the tensile linear displacement gauge (16) in the energy dissipation damping device.

6. The installation method of the point-claw type energy dissipation universal column foot node device of the structural wind-resistant column according to claim 5, characterized in that, in step S2: Before connecting the support bottom plate (3) and the spherical crown steel liner (5), lay a protective pad (4) on the support bottom plate (3), and then connect the spherical crown steel liner (5) so that both sides of the protective pad (4) are respectively attached to the support bottom plate (3) and the spherical crown steel liner (5).

7. The installation method of the point-claw type energy dissipation universal column foot node device of the structural wind-resistant column according to claim 5, characterized in that, in step S3: Calculate the deformation range of the resetable damper (13) according to the design parameter value of the energy dissipation damping device, and then adjust the distance between the lower limit piece (15) and the upper limit piece (14) according to the maximum deformation value of the resetable damper (13).

8. The installation method of the point-claw type energy dissipation universal column foot node device of the structural wind-resistant column according to claim 5, characterized in that: It is also possible to first complete the assembly of each branch in steps S2 to S5, and then perform step S1. After connecting the steel bars of all branches and the column foot connection foundation, concrete pouring is carried out.

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