CN115385253A - A cantilever beam vibration control structure and installation method - Google Patents

Abstract

The invention relates to the technical field of cantilever beam vibration reduction, and discloses a cantilever beam vibration control structure and an installation method, which are used for being installed between a first cantilever beam and a second cantilever beam which are adjacent and are arranged from bottom to top in sequence; the method comprises the following steps: the support rod, the connecting rod and the adjusting component are arranged on the support rod; the support rod is provided with a first end and a second end; the first one end is used for being connected with the upper end face of the first cantilever beam; the connecting rod is positioned above the supporting rod; the connecting rod is provided with a third end and a fourth end; the fourth end is used for being abutted against the lower end face of the second cantilever beam; the adjusting component is respectively connected with the supporting rod and the connecting rod; the adjusting assembly is used for adjusting the distance from the first end to the fourth end. Simple structure simple to operate, it is effectual to the vibration control of cantilever beam.

Description

A cantilever beam vibration control structure and installation method

technical field

The invention relates to the technical field of cantilever beam vibration reduction, in particular to a cantilever beam vibration control structure and installation method.

Background technique

At present, with the improvement of people's living standards, people tend to have larger and larger building spaces and smaller and smaller window shades, which leads to more and more buildings with cantilever structures, and many cantilever lengths exceed 7m. However, in use, it is found that due to the relatively small stiffness of the long cantilever beam, the long cantilever building is very sensitive to vibration. The vibration caused by walking or running will make the floor vibrate and be perceived, which brings people A certain sense of discomfort and insecurity. In the prior art, it is a better choice to use a tuned mass damper TMD (Tuned Mass Damper). This device places a mass on the end of the cantilever through a spring or magnetic suspension. When the building vibrates, the spring will provide An opposing force ensures that the vibrations of the building are reduced. However, the tuned mass damper is relatively expensive and has a large mass, which is not friendly to the cantilever structure and reduces the safety reserve capacity of the cantilever structure.

Contents of the invention

The purpose of the present invention is to provide a cantilever beam vibration control structure with simple structure and convenient installation to control the vibration of the cantilever beam.

In order to achieve the above object, the present invention provides a cantilever beam vibration control structure, which is used to be installed between adjacent first cantilever beams and second cantilever beams; comprising: a support rod, a connecting rod, and an adjustment assembly; The supporting rod has a first end and a second end; the first end is used to connect with the upper end surface of the first cantilever beam; the connecting rod is located above the supporting rod; the connecting rod has a third end and a fourth end; the fourth end is used to abut against the lower end surface of the second cantilever beam; the adjustment assembly is respectively connected to the support rod and the connecting rod; the adjustment assembly is used to adjust The distance from the first end to the fourth end.

Compared with the prior art, a cantilever beam vibration control structure in the embodiment of the present invention has the beneficial effect that: by connecting the support bar with the first cantilever beam, the connecting bar is connected with the second cantilever beam, and the support bar and the cantilever beam are connected through the adjustment assembly. The connecting rod is adjusted to make the support rod and the connecting rod move toward or away from each other, that is, the first end and the second end approach or move away from each other, so that the fourth end of the connecting rod abuts against the lower end surface of the second cantilever beam On; realize the vibration connection of the two cantilever beams to reduce the vibration of the cantilever beams. The structure is simple, and the cost is low, which is convenient for popularization and popularization.

Further, the adjustment assembly includes: a sleeve with a first internal thread: the two ends of the sleeve are respectively sleeved on the support rod and the connecting rod; the support rod has a first external thread; The sleeve is threadedly engaged with the support rod and the sleeve can move along the axial direction of the support rod. The support rod is threadedly connected with the sleeve, so that when the sleeve is rotated, the sleeve can move along the axial direction of the support rod, and the sleeve drives the connecting rod to move and abut against the lower end surface of the second cantilever beam. The adjusting assembly has a simple structure, is convenient to operate, and is practical and reliable.

Further, the fourth end is fixed with a connecting plate, and the connecting plate is used to abut against the lower end surface of the second cantilever beam; the first end is fixed with a bottom plate, and the bottom plate is used for It is fixedly connected with the upper end surface of the first cantilever beam. Through the cooperation of the connecting plate and the base plate, the stability of the connecting rod and the supporting rod is improved respectively, and the supporting force can be distributed on the connecting plate and the base plate, thereby reducing the pressure at the joint of the connecting rod, the supporting rod and the cantilever beam.

Specifically, the bottom plate and the upper end surface of the first cantilever beam are connected by bolts or the bottom plate and the first cantilever beam are integrally formed (that is, the bottom plate is used as a built-in part), so as to improve the stability of the connection between the bottom plate and the first cantilever beam.

Further, a cylindrical spring is sheathed on the outside of the connecting rod, and the two ends of the cylindrical spring abut against the upper end of the sleeve and the lower end of the connecting plate respectively; the connecting rod can be moved along the Axial telescopic movement of the sleeve. Vibration generated by the boom can be sufficiently absorbed by the cylindrical spring. The structure is simple and the operation is reliable.

Further, the connecting rod has a second external thread, and the rotation direction of the second external thread is opposite to that of the first external thread; the sleeve has a second internal thread; the connecting rod and The sleeve is threadedly fitted. By rotating the sleeve, the supporting rod and the connecting rod can move toward or away from each other along the axial direction of the sleeve, and the connecting rod can be quickly abutted against the second cantilever beam, and the distance between the supporting rod and the connecting rod can be quickly adjusted. relative distance.

Further, a vibration-damping pad is fixedly provided on the upper end surface of the connecting plate; the vibration-damping pad is used to abut against the lower end surface of the second cantilever beam. Set the vibration damping pad to fully absorb the vibration generated by the cantilever beam.

Further, the vibration-damping pad is an elastic rubber pad. Elastic rubber is cheap and has a good vibration damping effect.

Further, the connecting rod is used to be hinged to the lower end surface of the second cantilever beam; the support rod is used to be hinged to the upper end surface of the first cantilever beam. After the connecting rod is hinged with the lower end surface of the second cantilever beam, the supporting rod is used to be hinged with the upper end surface of the first cantilever beam so that the force direction of the supporting rod and the connecting rod can be along the axial direction of the supporting rod and the connecting rod. , to avoid torque, improve the service life of the support rod and connecting rod.

Further, it also includes: a first hinged rod and a second hinged rod, the adjustment assembly includes a spring member; the first hinged rod, the support rod, the second hinged rod and the connecting rod are sequentially hinged and encircled form a quadrilateral; there are four hinge points in the quadrilateral, and among the four hinge points, two opposite hinge points are respectively used to connect with the upper end surface of the first cantilever beam and the second The lower end surface of the cantilever beam is hinged, and the other two hinge points are respectively hinged with the two ends of the spring member. The first articulated rod, the support rod, the second articulated rod and the connecting rod are sequentially hinged to form a quadrilateral, and the deformation of the quadrilateral is restricted by the spring, which not only realizes the connection of two adjacent cantilever beams, but also It also has good vibration damping ability; it has good vibration control effect.

On the other hand, the present invention provides a vibration control method of a cantilever beam comprising the following steps:

mounting the first end of the support rod on the first outrigger;

Install the adjustment assembly on the support rod;

Set the connecting rod on the adjustment assembly;

Adjust the adjustment assembly to change the distance between the first end and the fourth end;

The fourth end of the connecting rod abuts against the second cantilever beam.

The method can quickly install the cantilever beam vibration control structure on the corresponding cantilever beam, effectively reducing the vibration of two adjacent cantilever beams.

Description of drawings

Fig. 1 is a schematic diagram of the continuous distribution of the vibration control structure of the embodiment of the present invention;

Fig. 2 is a schematic diagram of a single vibration control structure of an embodiment of the present invention;

Fig. 3 is a schematic diagram of a single vibration control structure of a hinged case in an embodiment of the present invention;

Fig. 4 is a schematic diagram of a single vibration control structure with a cylindrical spring in an embodiment of the present invention;

Fig. 5 is a schematic diagram of a single vibration control structure with a hinged rod in an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the adjusting assembly in Fig. 5 according to the embodiment of the present invention;

Fig. 7 is a bottom view of the adjustment assembly in Fig. 6 according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of a single vibration control structure with a concrete column in an embodiment of the present invention;

Fig. 9 is a schematic diagram of the interval distribution of the vibration control structure according to the embodiment of the present invention;

In the figure, 1, the first cantilever beam; 2, the second cantilever beam; 3, the support rod; 31, the first end; 32, the second end; 33, the bottom plate; 4, the connecting rod; 41, the third end; 42 , fourth end; 43, connecting plate; 5, adjustment assembly; 51, sleeve; 52, cylindrical spring; 53, damping pad; 54, spring piece; 6, first hinged rod; 7, second hinged rod ; 8. Connecting piece; 9. Telescopic rod; 10. Cylinder; 11. Concrete column; 12. Steel bar; 13. Micro-expansion cement.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outer", "axial", "radial" and "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

As shown in Figures 1-8, a vibration control structure of a cantilever beam in a preferred embodiment of the present invention is used to be installed between adjacent first cantilever beams 1 and second cantilever beams 2; including: a support rod 3 , a connecting rod 4, an adjustment assembly 5; the supporting rod 3 has a first end 31 and a second end 32; the first end 31 is used to connect with the upper end surface of the first cantilever beam 1; The connecting rod 4 has a third end 41 and a fourth end 42; the fourth end 42 is used to abut against the lower end surface of the second cantilever beam 2; the adjusting assembly 5 is respectively connected with the supporting rod 3 and the connecting rod 4; the adjusting assembly 5 is used To adjust the distance from the first end 31 to the fourth end 42 .

Wherein, the adjusting component 5 used to adjust the distance from the first end 31 to the fourth end 42 can also be regarded as adjusting the distance from the second end 32 to the third end 41 in FIGS. 1-4 .

Specifically, the cantilever beam vibration control structure can not only be installed between any two adjacent cantilever beams of the whole building, but also can be installed with multiple cantilever beam vibration control structures as shown in Figure 1 Distributed sequentially on the gaps of a plurality of continuously arranged cantilever beams, or as shown in FIG. 9 , a plurality of cantilever beam vibration control structures are distributed at intervals on the continuous gap formed by a plurality of cantilever beams.

Compared with the prior art, a vibration control structure of a cantilever beam in the embodiment of the present invention has the beneficial effect that: by connecting the support rod 3 with the first cantilever beam 1, connecting the connecting rod 4 with the second cantilever beam 2, through the adjustment assembly 5 Connect the support rod 3 and the connecting rod 4, and adjust the adjustment assembly 5 so that the supporting rod 3 and the connecting rod 4 move toward or away from each other, that is, the first end 31 and the second end 32 approach or move away from each other, so that the connecting rod 4 The fourth end 42 abuts against the lower end surface of the second cantilever beam 2 ; after realizing the vibration connection of the two cantilever beams, the vibration of the cantilever beam is reduced. The structure is simple, and the cost is low, which is convenient for popularization and popularization.

In one embodiment, as shown in Figures 1-4, the adjustment assembly 5 includes: a sleeve 51 with a first internal thread: the two ends of the sleeve 51 are sleeved on the support rod 3 and the connecting rod 4 respectively; 3 has a first external thread; the sleeve 51 is threadedly engaged with the support rod 3 and the sleeve 51 can move along the axial direction of the support rod 3 . The support rod 3 is threadedly connected with the sleeve 51, so that when the sleeve 51 is rotated, the sleeve 51 can be moved along the axial direction of the support rod 3, and the sleeve 51 drives the connecting rod 4 to move and abut against the second cantilever beam 2 on the lower end face. The adjustment assembly 5 is simple in structure, convenient in operation, practical and reliable.

In one embodiment, as shown in Figures 1, 2 and 4, a connecting plate 43 is fixed on the fourth end 42, and the connecting plate 43 is used to abut against the lower end surface of the second cantilever beam 2; the first end 31 A bottom plate 33 is fixedly provided, and the bottom plate 33 is used for fixed connection with the upper end surface of the first cantilever beam 1 . The cooperation of the connecting plate 43 and the base plate 33 improves the stability of the connecting rod 4 and the support rod 3 respectively, and the support force can be distributed on the connecting plate 43 and the base plate 33, reducing the connection between the connecting rod 4 and the supporting rod 3 and the cantilever. The pressure at the beam connection.

Specifically, the base plate 33 and the upper surface of the first cantilever beam 1 are connected by bolts or the base plate 33 and the first cantilever beam 1 are integrally formed (that is, the base plate 33 is used as a built-in part), so as to improve the stability of the connection between the base plate 33 and the first cantilever beam 1 sex.

In one embodiment, as shown in Figure 4, a cylindrical spring 52 is sheathed on the outside of the connecting rod 4, and the two ends of the cylindrical spring 52 abut against the upper end of the sleeve 51 and the lower end of the connecting plate 43 respectively; 4 can move telescopically along the axial direction of the sleeve 51. The vibration generated by the cantilever can be sufficiently absorbed by the cylindrical spring 52 . The structure is simple and the operation is reliable.

In one embodiment, as shown in Figures 1, 2 and 4, the connecting rod 4 has a second external thread, and the rotation direction of the second external thread is opposite to that of the first external thread; the sleeve 51 has a second internal thread thread; the connecting rod 4 is threadedly matched with the sleeve 51. By rotating the sleeve 51, the supporting rod 3 and the connecting rod 4 can move toward or away from each other along the axial direction of the sleeve 51, and the connecting rod 4 can be quickly brought into contact with the second cantilever beam 2, and can be quickly adjusted. The relative distance between the support rod 3 and the connecting rod 4.

In one embodiment, as shown in FIG. 2 , a vibration-damping pad 53 is fixedly disposed on the upper surface of the connecting plate 43 ; the vibration-damping pad 53 is used to abut against the lower surface of the second cantilever beam 2 . The vibration-damping pad 53 is provided to completely absorb the vibration generated by the cantilever beam.

In one embodiment, the vibration-damping pad 53 is an elastic rubber pad. Elastic rubber is cheap and has a good vibration damping effect.

In one embodiment, the connecting rod 4 is used to be hinged to the lower end surface of the second cantilever beam 2 ; the support rod 3 is used to be hinged to the upper end surface of the first cantilever beam 1 . After the connecting rod 4 is hinged with the lower end surface of the second cantilever beam 2, after the support rod 3 is used to be hinged with the upper end surface of the first cantilever beam 1, the force bearing direction of the support rod 3 and the connecting rod 4 can be along the direction of the support rod 3 and the The axial direction of the connecting rod 4 avoids the generation of torque and improves the service life of the supporting rod 3 and the connecting rod 4 .

In one embodiment, as shown in Figures 5, 6 and 7, it also includes: a first hinged rod 6 and a second hinged rod 7, the adjustment assembly 5 includes a spring member 54; the first hinged rod 6, the support rod 3, the second hinged rod The two hinged rods 7 and the connecting rods 4 are sequentially hinged and enclosed to form a quadrilateral; there are four hinge points in the quadrilateral, and among the four hinge points, two opposite hinge points are respectively used for connecting with the first cantilever beam 1. The end face is hinged to the lower end face of the second cantilever beam 2 , and the other two hinge points are respectively hinged to the two ends of the spring member 54 . The first articulated rod 6, the support rod 3, the second articulated rod 7, and the connecting rod 4 are hinged in turn to form a quadrilateral, and the deformation of the quadrilateral is limited by the spring member 54, which not only realizes the connection of two adjacent cantilever beams, but also Has good vibration damping ability; has good vibration control effect.

In one embodiment, as shown in Figures 5, 6, and 7, one end of the spring member 54 is fixedly connected to the connecting member 8, and the other end is rotatably connected to the telescopic rod 9; the telescopic rod 9 has a third external thread; Among the two hinge points where the two ends of the 54 are respectively hinged, one hinge point is hinged with the connector 8, and the other hinge point is hinged with the cylinder body 10; and the cylinder body 10 has a third internal thread, and the cylinder body 10 is sleeved on On the rod 9 and threaded with the telescopic rod 9. By rotating the telescopic rod 9, the telescopic rod 9 moves along the axial direction of the cylinder body 10, and the tension value of the spring member 54 is adjusted; when the tension value of the spring member 54 becomes larger, the two hinge points near the two ends of the spring member 54 are close to each other , so that the two hinge points connected with two adjacent cantilever beams are far away from each other, and the first hinge rod 6 , the support rod 3 , the second hinge rod 7 and the connecting rod 4 are all compressed. The stress situation of two adjacent cantilever beams and the first hinged rod 6, support rod 3, second hinged rod 7 and connecting rod 4 is adjusted. Similarly, when two adjacent cantilever beams vibrate, it will cause the same The movement of the two hinge points connected thereto is close to or far away from, and the elastic force of the spring member 54 can effectively limit the movement of the two hinge points of two adjacent cantilever beams close to or far away from. Achieve the effect of vibration reduction and controllable vibration. Specifically, as shown in FIG. 5 , a tension meter is connected to the first hinged rod 6 , which can display the tension state of the first hinged rod 6 , so that the user can adjust the tension value accordingly.

In one embodiment, the bottom plate 33 is located near the free end of the upper end surface of the first cantilever beam 1 , the support rod 3 is arranged vertically, and the sleeve 51 and the connecting rod 4 both extend in the extending direction of the support rod 3 .

In one embodiment, as shown in Figure 8, the vibration frequency of two adjacent cantilever beams can be measured by corresponding equipment, if the vibration frequency of the cantilever beam is greater than 3 Hz, it can be set on the two adjacent cantilever beams along the vertical direction The extended concrete column 11, the upper end of the concrete column 11 realizes the abutment between the concrete column 11 and two adjacent cantilever beams by injecting micro-expansion cement 13; the two ends of the concrete column 11 are respectively fixedly connected with the two adjacent cantilever beams The steel bar 12. This setting can further reduce the cost and is easy to operate.

On the other hand, the present invention provides a vibration control method of a cantilever beam comprising the following steps:

Install the first end 31 of the support rod 3 on the first cantilever beam 1;

Install the adjustment assembly 5 on the support rod 3;

Set the connecting rod 4 on the adjustment assembly 5;

Adjust the adjustment assembly 5 to change the distance between the first end 31 and the fourth end 42;

The fourth end 42 of the connecting rod 4 abuts against the second cantilever beam 2 .

The method can quickly install the cantilever beam vibration control structure on the corresponding cantilever beam, effectively reducing the vibration of two adjacent cantilever beams.

To sum up, the embodiment of the present invention provides a cantilever beam vibration control structure and installation method, which connects the support rod 3 with the first cantilever beam 1, connects the connecting rod 4 with the second cantilever beam 2, and connects the support through the adjustment assembly 5 Rod 3 and connecting rod 4, adjust the adjustment assembly 5 so that the support rod 3 and the connecting rod 4 move toward or away from each other, that is, the first end 31 and the second end 32 approach or move away from each other, so that the fourth end of the connecting rod 4 42 abuts against the lower end surface of the second cantilever beam 2; after realizing the vibration connection of the two cantilever beams, the vibration of the cantilever beam is reduced. The structure is simple, and the cost is low, which is convenient for popularization and popularization.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and replacements can also be made, these improvements and replacements It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A cantilever beam vibration control structure is used for being installed between a first cantilever beam and a second cantilever beam which are adjacent; it is characterized by comprising the following steps:

a support rod having a first end and a second end; the first end is used for being connected with the upper end face of the first cantilever beam;

the connecting rod is positioned above the supporting rod; the connecting rod has a third end and a fourth end; the fourth end is used for being abutted against the lower end face of the second cantilever;

the adjusting assembly is respectively connected with the supporting rod and the connecting rod; the adjusting component is used for adjusting the distance from the first end to the fourth end.

2. The cantilever beam vibration control structure of claim 1, wherein the adjustment assembly comprises: a sleeve having a first internal thread: two ends of the sleeve are respectively sleeved on the supporting rod and the connecting rod; the supporting rod is provided with a first external thread; the sleeve is in threaded fit with the supporting rod; the sleeve is movable in the axial direction of the support rod.

3. The cantilever beam vibration control structure of claim 2, wherein a connection plate is fixedly arranged at the fourth end and is used for abutting against the lower end face of the second cantilever beam; the first end is fixedly provided with a bottom plate, and the bottom plate is used for being fixedly connected with the upper end face of the first cantilever beam.

4. The cantilever beam vibration control structure of claim 3, wherein the connecting rod is externally sleeved with a cylindrical spring, and two ends of the cylindrical spring are respectively abutted against the upper end of the sleeve and the lower end of the connecting plate; the connecting rod can move in a telescopic mode along the axial direction of the sleeve.

5. Cantilever beam vibration control structure according to claim 3, wherein the tie-rod has a second external thread, and the second external thread has a direction of rotation opposite to the direction of rotation of the first external thread; the sleeve is provided with a second internal thread; the connecting rod is in threaded fit with the sleeve.

6. Cantilever beam vibration control structures according to claim 5, wherein the upper end face of the connection plate is fixedly provided with a vibration damping pad; the vibration damping pad is used for abutting against the lower end face of the second cantilever beam.

7. The cantilever beam vibration control structure of claim 6, wherein the vibration dampening pad is an elastomeric rubber pad.

8. Cantilever beam vibration control structure according to claim 5, wherein the connection rod is adapted to articulate with the lower end face of the second cantilever beam; the supporting rod is used for being hinged with the upper end face of the first cantilever beam.

9. The cantilever beam vibration control structure of claim 1, further comprising: a first and a second articulated lever, the adjustment assembly comprising a spring member; the first hinge rod, the support rod, the second hinge rod and the connecting rod are sequentially hinged end to end and enclose to form a quadrangle; the quadrilateral is provided with four hinge points, two opposite hinge points are respectively used for being hinged with the upper end face of the first cantilever beam and the lower end face of the second cantilever beam, and the other two hinge points are respectively hinged with two ends of the spring part.

10. A method of mounting a cantilever vibration control structure, based on the cantilever vibration control structure of claims 1-9, comprising the steps of:

mounting the first end of the support rod on a first cantilever;

an adjusting component is arranged on the supporting rod;

a connecting rod is arranged on the adjusting component;

adjusting the adjusting assembly to change the distance between the first end and the fourth end;

the fourth end of the connecting rod is abutted to the second cantilever beam.

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