CN107401227B - Device for placing tuned mass damper and installation method thereof - Google Patents
Device for placing tuned mass damper and installation method thereof Download PDFInfo
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- CN107401227B CN107401227B CN201710819362.7A CN201710819362A CN107401227B CN 107401227 B CN107401227 B CN 107401227B CN 201710819362 A CN201710819362 A CN 201710819362A CN 107401227 B CN107401227 B CN 107401227B
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Abstract
The invention relates to a device for placing a tuned mass damper and an installation method thereof, belonging to the technical field of energy dissipation and vibration reduction of large-scale equipment, wherein the device consists of a plurality of steel hoops, and each steel hoop comprises a steel hoop plate, an upper ribbed plate, an inclined support, a horizontal support, a steel beam, a lower ribbed plate and a connecting plate; the steel beam comprises a welding I-beam and a section steel beam, the top of each steel hoop plate is respectively welded with a rib plate, an inclined support and a horizontal support, and the bottom of each steel hoop plate is respectively welded with the steel beam and a lower rib plate; the steel hoops are connected with each other. The device for placing the tuned mass damper and the installation method thereof can realize that the vibration damper is installed in place at one time without welding by fire. The complexity of layered construction is avoided, resources such as manpower and material resources are saved, the construction efficiency is improved, and the cost is saved.
Description
Technical Field
The invention relates to a device for placing a Tuned Mass Damper (TMD) and an installation method thereof, which are suitable for high-rise equipment such as large coke towers on a production line of a petrochemical enterprise and belong to the technical field of energy dissipation and vibration reduction of large equipment.
Background
The horizontal vibration of the equipment itself, the supporting structure and the pipelines is often caused by the material reaction in the equipment with high rise such as large coke towers in the production line of petrochemical enterprises. The violent vibration can influence the structure safety and the physical and psychological health of operators, and the vibration of the equipment can also cause the violent shaking of pipelines, so that the flange is loosened, oil gas is leaked, production accidents such as fire, explosion and the like are caused, and the consequences are beyond the conception.
For vibration control of high-rise equipment, a plurality of implementable vibration reduction methods are summarized at home and abroad. The main idea of vibration reduction is to increase the natural frequency of the structure, increase the damping of the structure or influence the formation of karman vortex streets around the structure by adopting various measures, thereby achieving the purpose of avoiding the induced vibration of the structure. The current vibration reduction methods are divided into a preventive method and a remedial method: the preventive method mainly aims at relevant measures taken by high-rise equipment at the beginning of design, such as increasing the wall thickness of the equipment, changing the material of the equipment and the like; the remedial method is suitable for energy dissipation and vibration reduction of the existing high-rise equipment, such as a supporting method, a frame method, an accessory installation method, rigid mass damper arrangement and the like. For the vibration problem of the existing high-rise equipment, the reason for generating the vibration is firstly analyzed, and then a targeted energy dissipation and vibration reduction measure is taken according to the actual situation.
At present, for the self energy dissipation and vibration reduction problems of high-rise equipment, a method of setting a Tuned Mass Damper (TMD) is generally adopted, wherein the TMD is mainly placed at a higher-layer position of a building and operates in a pendulum mode; the tuned mass damper is a concrete block weighing about hundreds of tons, four sides are connected by springs, when external force is transmitted to a building, the swinging of the building can transmit energy to the tuned mass damper, the tuned mass damper swings at the same time, the tuned mass damper can generate reverse swinging after calculation, and the reverse swinging is just different from the swinging of the building, so that the swinging of the building can be reduced; generally, a plurality of mass blocks are additionally arranged at different heights of equipment or a structure, so that the natural vibration period and the damping of the whole structure are changed.
However, for the existing high-rise equipment such as a large coke drum supported by a multi-layer steel frame, a plurality of Tuned Mass Dampers (TMD) are additionally arranged at different positions of the equipment or the structure, so that the construction is complicated, the operability is poor, the various working conditions need to be considered for determining the Tuned Mass Dampers (TMD) of each layer, and the working efficiency is low.
Therefore, it is very necessary to develop a device for placing a Tuned Mass Damper (TMD) and an installation method thereof, which are simple and efficient to operate, and save resources such as manpower and material resources, improve construction efficiency, and control construction cost.
Disclosure of Invention
One of the purposes of the invention is to provide a simple and efficient device for placing a Tuned Mass Damper (TMD) when energy dissipation and vibration reduction are carried out on high-rise equipment such as an existing large coke tower by adopting a method for arranging the tuned mass damper, so that the vibration reduction device is installed in place at one time without welding by fire, the complexity of layered construction is avoided, resources such as manpower and material resources are saved, the construction efficiency is improved, and the cost is saved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for placing tuned mass dampers is composed of a plurality of steel hoops, wherein each steel hoop comprises a steel hoop plate, an upper ribbed plate, an inclined support, a horizontal support, a steel beam, a lower ribbed plate and a connecting plate; the steel beam comprises a welding I-beam and a section steel beam, the top of each steel hoop plate is respectively welded with the rib plate, the inclined support and the horizontal support, and the bottom of each steel hoop plate is respectively welded with the steel beam and the lower rib plate; and all the steel hoops are connected.
Preferably, the specific connection between the steel hoops is as follows: the upper rib plates at the end positions of the steel hoops are butted, the bolt holes are aligned and then connected through high-strength bolts, and the welding I-beams at the end positions of the steel hoops are connected through connecting plates and bolts.
Preferably, the steel hoop is divided into eight pieces, the angle of the steel hoop plate in each steel hoop is 45 degrees, the yield strength is not lower than 345MPa, and the gap between the steel hoop plates is 20mm.
Preferably, the shape of going up the floor is the curvilinear figure, distributes in the quartering point position at steel hoop plate top, goes up the floor and links to each other with steel hoop plate welding, goes up the floor and supports welded connection with bearing diagonal and level, has the bolt hole on the last floor that is located steel hoop plate tip, and the bolt hole quantity is 5 for the connection between the steel hoop.
Preferably, the inclined supports and the horizontal supports are located at the four-point positions in the middle of each steel hoop, 2 inclined supports and 2 horizontal supports are respectively located at the four-point positions, one ends of the inclined supports and the horizontal supports are connected with the upper rib plate in a welded mode, and the other ends of the inclined supports and the horizontal supports are connected with the steel hoop plate in a welded mode.
Preferably, the welding I-beams and the section steel beams are located at the bottom of the steel hoop plate and are in welded connection with the steel hoop plate, the number of the section steel beams at the bottom of each steel hoop is 7, the section steel beams are uniformly distributed, one end of each section steel beam is connected with the lower rib plate in a welded mode, and the other end of each section steel beam is connected with the welding I-beam in a welded mode.
Preferably, the lower ribbed slab is 3, is located the bottom and both sides of shaped steel roof beam, and is connected with shaped steel roof beam limb back and steel hoop plate welding.
Preferably, all there is the long bolt hole on the connecting plate, and unilateral trompil number is 4.
Preferably, the connecting plate is used for connecting the end parts of the welding I-beams on the steel hoop.
The invention also aims to provide a simple and efficient installation method of a device for placing the Tuned Mass Damper (TMD) when energy dissipation and vibration reduction are carried out on high-rise equipment such as an existing large coke tower by adopting the method for arranging the tuned mass damper, so that the vibration reduction device is installed in place at one time, the dynamic fire welding is not needed, the complexity of layered construction is avoided, resources such as manpower and material resources are saved, the construction efficiency is improved, and the cost is saved.
In order to realize the purpose, the invention adopts the following technical scheme:
a method of installing a device for placing tuned mass dampers, comprising the steps of:
(1) Prefabrication and forming of steel hoop plate
Prefabricating and molding a corresponding steel hoop plate according to the specific size of the top of the large coke tower, wherein the molded steel hoop plate is tightly attached to the surface of the tower body;
(2) The upper ribbed plate is connected with the steel hoop plate
Prefabricating and molding an upper rib plate, uniformly arranging bolt holes on the surface of the upper rib plate, wherein the shape of the bolt holes is a curve and is similar to the curve of the top of a coke tower, and connecting the upper rib plate with a steel hoop plate in a welding mode, wherein the connecting position is positioned at a quarter point of the steel hoop;
(3) The steel support is connected with the steel hoop plate
Connecting the formed steel supports with the steel hoop plates in a welding mode, wherein each steel support comprises an inclined support and a horizontal support, and the inclined supports and the horizontal supports in each steel hoop are respectively 2 and distributed at the four-point positions in the middle of the steel hoop;
(4) The steel beam is connected with the steel hoop plate
Connecting a welding I-beam and a section steel beam with the steel hoop plate in a welding mode, wherein the welding I-beam is distributed on the edge of the overhanging part at the bottom of the steel hoop plate, and the end parts of the welding I-beam are connected by adopting a common bolt; 7 steel beams at the bottom of each steel hoop are uniformly distributed, one end of each steel beam is connected with the lower ribbed plate through welding, and the other end of each steel beam is connected with the welding I-beam through welding;
(5) The lower ribbed plate is connected with the steel hoop plate
Connecting the lower rib plate with the steel hoop plate and the limb back of the section steel beam in a welding mode, and distributing the lower rib plate on two sides of the section steel beam and the limb back bottom of the section steel beam to obtain a steel hoop;
(6) And the steel hoop are connected
Assembling the steel hoops connected in the step (5) at the top of the tower, firstly butting the upper rib plates at the end parts of the two steel hoops, and connecting the two steel hoops through high-strength bolts after bolt holes are aligned; then, the welding I-beams at the end parts of the two steel hoops are connected by bolts (common bolts can be adopted) through connecting plates, and are sequentially installed in sequence until the completion;
(7) Placing tuned mass dampers
And (4) after the steel hoops in the step (6) are assembled in sections, placing small tuned mass dampers on each section of steel hoop, wherein the small tuned mass dampers are uniformly distributed along the ring shape of the tower body.
Preferably, in the step (1), the vertical height of the steel hoop plate is 2.1m, the overhanging length is 1.8m, the thickness dimension is 25mm, the angle of the steel hoop plate is 45 degrees, Q345 steel is adopted, the yield strength is not lower than 345MPa, and the gap between the steel hoop plates overhanging each steel hoop is 20mm.
Preferably, the number of bolt holes in the step (2) is 5.
Preferably, the cross-sectional dimensions of the inclined support and the horizontal support in the step (3) are both round steel tubes, the diameter of each round steel tube is 194mm, and the thickness of each round steel tube is 12mm.
Preferably, the cross-sectional dimension of the welding I-beam in the step (4) is I344mm × 348mm × 10mm × 16mm, and the section steel beam is a channel steel [16a (the dimension of the channel steel can also be determined according to the specific situation of the equipment).
Preferably, the lower rib plate in the step (5) is mainly used for improving the rigidity of the steel hoop plate and fixing the steel beam, and the thickness of the lower rib plate can be 10mm.
Preferably, there are eight pieces of the steel hoop in the step (6).
Has the beneficial effects that:
the device for placing the tuned mass damper and the installation method thereof can realize that the vibration damper is installed in place at one time without welding by fire. The complexity of layered construction is avoided, resources such as manpower and material resources are saved, the construction efficiency is improved, and the cost is saved.
The invention is further illustrated by the following figures and detailed description of the invention, which are not meant to limit the scope of the invention.
Drawings
Figure 1 is a schematic front view of the apparatus for placing a tuned mass damper of the present invention.
Figure 2 is a schematic top view of the apparatus for placing tuned mass dampers of the present invention.
Figure 3 is a schematic bottom view of the apparatus for placing tuned mass dampers according to the present invention.
Figure 4 is a cross-sectional view 1-1 from above of the apparatus for placing a tuned mass damper of the present invention.
Figure 5 is a top 2-2 cross-sectional view of the apparatus for placing a tuned mass damper of the present invention.
Figure 6 is a bottom 3-3 cross-sectional view of the apparatus for placing a tuned mass damper of the present invention.
Figure 7 is an enlarged schematic view of the attachment location of (1) in a top 2-2 cross-sectional view of the apparatus for placing a tuned mass damper of the present invention.
Figure 8 is an enlarged schematic view of the attachment location of (2) in the bottom 3-3 cross-sectional view of the apparatus for placing a tuned mass damper of the present invention.
The main reference numbers:
1. steel hoop plate 2 upper rib plate
3. Inclined support 4 horizontal support
5. 6-shaped steel beam of welded I-beam
7. Lower ribbed plate 8 connecting plate
9. Tower body
Detailed Description
The present invention may be practiced, but is not limited to, in the following examples which are intended to be illustrative of the practice of the invention, and not to limit the scope of the invention in any way.
Example 1
Fig. 1 is a schematic front view of a device for placing a tuned mass damper according to the present invention, fig. 2 is a schematic top view of a device for placing a tuned mass damper according to the present invention, fig. 3 is a schematic bottom view of a device for placing a tuned mass damper according to the present invention, fig. 4 is a sectional top view 1-1 of a device for placing a tuned mass damper according to the present invention, fig. 5 is a sectional top view 2-2 of a device for placing a tuned mass damper according to the present invention, fig. 6 is a sectional bottom view 3-3 of a device for placing a tuned mass damper according to the present invention, fig. 7 is an enlarged schematic top view of a connection position (1) in a sectional top view of a device for placing a tuned mass damper according to the present invention, fig. 8 is an enlarged schematic bottom view of a connection position (2) in a sectional top view of a device for placing a tuned mass damper according to the present invention; the tower comprises a tower body, a steel hoop plate 1, an upper rib plate 2, an inclined support 3, a horizontal support 4, a welding I-beam 5, a section steel beam 6, a lower rib plate 7, a connecting plate 8 and a tower body 9.
The device for placing the tuned mass damper of the present invention comprises eight steel hoops, each steel hoop comprising: the steel hoop plate 1, the upper ribbed plate 2, the inclined support 3, the horizontal support 4, the welding I-beam 5, the section steel beam 6 and the lower ribbed plate 7, in addition, a connecting plate 8 and a tower body 9 are also arranged; the bottom of the steel hoop plate 1 is provided with an overhanging part, the steel hoop plate 1 is attached to the surface of a tower body 9, two upper rib plates 2 positioned at the end parts of the steel hoop plate are provided with bolt holes, the number of the bolt holes is 5 and used for connecting steel hoops, the shape of each upper rib plate 2 is in a curve shape and is similar to the curve of the top of a coke tower, the upper rib plates are connected with the top of the steel hoop plate 1 in a welding mode, the connecting positions are positioned at four-point parts of the steel hoops, and meanwhile, the two upper rib plates in the middle are connected with the inclined supports 3 and the horizontal supports 4 in a welding mode; the steel supports (comprising the inclined supports 3 and the horizontal supports 4) are connected with the top of the steel hoop plate 1 in a welding mode, and the inclined supports 3 and the horizontal supports 4 in each steel hoop are respectively 2 and distributed at the four-point positions in the middle of the steel hoop; the steel beam (including the welding I-beam 5 and the section steel beam 6) is connected with the bottom of the steel hoop plate 1 in a welding mode, the I-beam 5 is connected with the overhanging part at the bottom of the steel hoop plate 1, the end part of the I-beam is connected by adopting a common bolt (a reserved long bolt hole), the number of the section steel beams 6 is 7, the section steel beams are uniformly distributed, one end of each section steel beam is connected with the lower rib plate 7 in a welding mode, the other end of each section steel beam is connected with the welding I-beam 5 in a welding mode, the steel beam is mainly used for bearing the dead weight of TMD, the section size of the welding I-beam can be I344mm multiplied by 348mm multiplied by 10mm multiplied by 16mm, the end part of the welding I-beam can be connected by adopting a high-strength bolt (a reserved long bolt hole), and meanwhile, the section steel beam can be used as a channel steel [16a; the lower rib plates 7 are 3, are positioned at the bottom and two sides of the section steel beam 6, are welded with the limb back of the section steel beam 6 and the steel hoop plate 1, have the thickness of 10mm, and are mainly used for improving the rigidity of the steel hoop plate and fixing section steel; the thickness of the connecting plate 8 can be the web plate thickness of the welding I-beam 5, the length can be determined according to the field condition, each connecting plate 8 is provided with a long bolt hole, the number of the holes on one side is 4, the hole diameter of each bolt hole is determined according to the deformation of the steel hoop, the general hole diameter is about 2 times of the deformation, and the connecting plate 8 is mainly used for end connection of the welding I-beam on each steel hoop.
Because of the limitation of pipeline equipment, the steel hoop of the invention can not be directly sleeved on the tower body, so that the steel hoop is spliced in sections. The steel hoop divides into a plurality of pieces according to large-scale coke drum dome size, and every steel hoop top carries out welded connection with floor, bearing diagonal and horizontal support respectively, and its bottom welds with girder steel, lower floor respectively, and rethread high-strength bolt couples together a plurality of steel hoops, hugs closely in tower body top surface to guarantee to form closed area, place TMD at last, accomplish final installation.
The upper rib plates 2 at the end positions of the two steel hoops are butted, the bolt holes are aligned and then connected through high-strength bolts, and then the welding I-beams 5 at the end positions of the two steel hoops are connected through bolts through the connecting plates 8.
An embodiment of the apparatus for placing a tuned mass damper of the present invention comprises the steps of:
1. prefabrication and forming of steel hoop plate 1
According to the specific size of the top of the large coke tower, the corresponding steel hoop plate 1 is prefabricated and molded, the vertical height is 2.1m, the cantilever length is 1.8m, the thickness is 25mm, and the molded steel hoop plate 1 is tightly attached to the surface of the tower body 9, as shown in fig. 8. The angle of the steel hoop plate 1 is 45 degrees, Q345 steel can be adopted, the yield strength of the steel is recommended to be not lower than 345MPa, the height is 2.1m, the thickness dimension is about 25mm, the overhanging length is 1.8m, the gap between the steel hoop plates of each steel hoop overhang is about 20mm, and the steel hoop plate 1 is mainly used for placing a Tuned Mass Damper (TMD).
2. The upper rib plate is connected with the steel hoop plate
The upper rib plate 2 is prefabricated and molded, bolt holes (the number of the bolt holes is about 5) are uniformly formed in the surface of the upper rib plate 2 at the end part of the steel hoop, the shape of the bolt holes is a curved line and is similar to the curve of the top of a coke tower, and the bolt holes are connected with the steel hoop plate 1 in a welding mode, and the connecting positions are located at the four-point parts of the steel hoop, as shown in fig. 2, 4 and 5.
3. The steel support is connected with the steel hoop plate
The steel hoop plate comprises a steel hoop plate body (1) and a steel support (3) which is formed, wherein the steel support (4) is connected with the steel hoop plate body in a welding mode, the cross section sizes of the two steel supports (3) and the 4 horizontal support are all recommended to adopt round steel tubes, the diameter of each round steel tube is about 194mm, the thickness of each round steel tube is about 12mm, the two steel supports (3) and the horizontal support (4) in each steel hoop are respectively 2, the two steel supports are distributed at four points in the middle of each steel hoop, and the support length is determined according to the field situation, as shown in fig. 2 and fig. 4.
4. The steel beam is connected with the steel hoop plate
Connecting steel beams (including a welding I-beam 5 and a section steel beam 6) with the steel hoop plate 1 in a welding mode, wherein the section size of the welding I-beam 5 can be I344mm multiplied by 348mm multiplied by 10mm multiplied by 16mm (the size can also be determined according to the specific situation of equipment), the welding I-beam is distributed on the edge of an overhanging part at the bottom of the steel hoop plate 1, and the end part of the welding I-beam is connected by common bolts (long bolt holes are reserved), as shown in fig. 3 and 7; the section steel beams 6 can be channel steel beams (16 a) (the size can also be determined according to the specific situation of equipment), the number of the section steel beams 6 at the bottom of each steel hoop is about 7, the section steel beams 6 are uniformly distributed, one end of each section steel beam is connected with the lower rib plate 7 through welding, and the other end of each section steel beam is connected with the welding I-beam 5 through welding, as shown in figures 3 and 6.
5. The lower rib plate is connected with the steel hoop plate
The lower rib plates 7 are connected with the steel hoop plates 1 and the section steel beam 6 limb backs in a welding mode and are distributed on the two sides of the section steel beam 6 and the bottoms of the section steel beam 6 limb backs, the lower rib plates are mainly used for improving the rigidity of the steel hoop plates 1 and fixing the section steel beam 6, the thickness of the section steel beam can be 10mm, and the rest sizes can be determined according to the specific conditions of equipment, as shown in fig. 3, 6 and 8.
6. Connection between steel hoops
Assembling the connected steel hoops at the top of a large coke tower, firstly butting the upper rib plates 2 at the end parts of the two steel hoops, aligning bolt holes and then connecting the two steel hoops through high-strength bolts, wherein the bolt holes are shown in figure 2; then, the welding I-beams 5 at the end positions of the two steel hoops are connected through the connecting plate 8 by bolts (common bolts can be adopted), as shown in fig. 7, the welding I-beams are sequentially installed in sequence until the completion, and a total of eight steel hoops are connected.
7. Place tuning quality damper (TMD)
After the steel hoops are assembled in sections, small Tuned Mass Dampers (TMD) are placed on each section of steel hoop, and the small Tuned Mass Dampers (TMD) are uniformly distributed along the ring shape of the tower body. The quality control of the small Tuned Mass Damper (TMD) is determined according to the specific energy dissipating damping scheme of the device.
The invention has the advantages that:
1. compared with the conventional device and method for arranging the tuned mass damper, the device and method provided by the invention have the advantages that the applicability is stronger, particularly, for high-rise equipment such as the existing large coke tower, the steel hoop is arranged on the top of the tower and is formed at one time, the layered installation is avoided, the construction complexity is reduced, the construction efficiency is improved, the cost is saved, and the vibration damping effect is good.
2. The device for placing the tuned mass damper is connected and spliced in sections through the high-strength bolts, so that the influence on equipment such as pipelines is reduced, and the steel hoop is firmly sleeved on the tower top, so that the welding operation is only needed to be carried out on the surface of the steel hoop, the direct fire welding on the surface of the tower body is avoided, the damage to the tower body is reduced, and the construction safety is guaranteed.
3. The device for placing the tuned mass damper has the advantages that the sizes of components are flexible, the specific sizes of the components can be made according to the energy dissipation and vibration reduction requirements of different high-rise equipment, the analysis types of working conditions are reduced, the calculation efficiency is greatly improved, and the calculation cost is further reduced compared with a method for arranging mass blocks in a layered mode.
4. The device for placing the tuned mass damper has wide application prospect in the field of high-rise equipment such as large coke towers and the like, and has good economic and social benefits.
Claims (7)
1. An apparatus for placing tuned mass dampers, characterized by: the steel hoop comprises a plurality of steel hoops, wherein each steel hoop comprises a steel hoop plate, an upper ribbed plate, an inclined support, a horizontal support, a steel beam, a lower ribbed plate and a connecting plate; the steel beam comprises a welding I-beam and a section steel beam, the top of each steel hoop plate is respectively welded with a rib plate, an inclined support and a horizontal support, and the bottom of each steel hoop plate is respectively welded with the steel beam and a lower rib plate; all the steel hoops are connected; the concrete connection of connecting between each steel hoop is: the upper rib plates at the end parts of the steel hoops are butted, the bolt holes are aligned and then connected through high-strength bolts, and the welding I-beams at the end parts of the steel hoops are connected through connecting plates and bolts; the steel hoop is divided into eight blocks, the angle of a steel hoop plate in each steel hoop is 45 degrees, the yield strength is not lower than 345MPa, and the gap between the steel hoop plates is 20mm; the upper rib plate is in a curve shape and distributed at the quartering point position of the top of the steel hoop plate, the upper rib plate is connected with the steel hoop plate in a welding mode, the upper rib plate is connected with the inclined support and the horizontal support in a welding mode, bolt holes are formed in the upper rib plate located at the end portion of the steel hoop plate, and the number of the bolt holes is 5 and used for connecting the steel hoops; the inclined supports and the horizontal supports are positioned at the four-point positions of the middle part of each steel hoop, 2 inclined supports and 2 horizontal supports are respectively arranged, one ends of the inclined supports and the horizontal supports are connected with the upper rib plate in a welding mode, and the other ends of the inclined supports and the horizontal supports are connected with the steel hoop plate in a welding mode; the welding I-beam and the section steel beams are positioned at the bottom of the steel hoop plate and are welded with the steel hoop plate, the number of the section steel beams at the bottom of each steel hoop is 7, the section steel beams are uniformly distributed, one end of each section steel beam is welded with the lower rib plate, and the other end of each section steel beam is welded with the welding I-beam.
2. An apparatus for placement of tuned mass dampers according to claim 1 wherein: the lower ribbed plate is 3, is located the bottom and both sides of shaped steel roof beam, links to each other with shaped steel roof beam limb back and steel hoop board welding.
3. An apparatus for placement of tuned mass dampers according to claim 1 wherein: all there is the stay bolt hole on the connecting plate, and unilateral trompil number is 4.
4. An apparatus for placement of tuned mass dampers according to claim 3 wherein: the connecting plate is used for connecting the end parts of the welded I-shaped beams on the steel hoops.
5. A method of installing an apparatus for placing tuned mass dampers according to any of the claims 1-4 comprising the steps of:
(1) Prefabrication and forming of steel hoop plate
Prefabricating and molding a corresponding steel hoop plate according to the specific size of the top of the large coke tower, wherein the molded steel hoop plate is tightly attached to the surface of the tower body;
(2) The upper ribbed plate is connected with the steel hoop plate
Prefabricating and molding an upper rib plate, uniformly arranging bolt holes on the surface of the upper rib plate, wherein the shape of the bolt holes is a curve and is similar to the curve of the top of a coke tower, and connecting the upper rib plate with a steel hoop plate in a welding mode, wherein the connecting position is positioned at a quarter point of the steel hoop;
(3) The steel support is connected with the steel hoop plate
Connecting the formed steel supports with the steel hoop plates in a welding mode, wherein each steel support comprises an inclined support and a horizontal support, and the inclined supports and the horizontal supports in each steel hoop are respectively 2 and distributed at the four-point positions in the middle of the steel hoop;
(4) The steel beam is connected with the steel hoop plate
Connecting a welding I-beam and a section steel beam with the steel hoop plate in a welding mode, wherein the welding I-beam is distributed on the edge of the overhanging part at the bottom of the steel hoop plate, and the end parts of the welding I-beam are connected by adopting a common bolt; the number of the steel beams at the bottom of each steel hoop is 7, the steel beams are uniformly distributed, one end of each steel hoop is connected with the lower ribbed plate through welding, and the other end of each steel hoop is connected with the welding I-beam through welding;
(5) The lower ribbed plate is connected with the steel hoop plate
Connecting the lower rib plate with the steel hoop plate and the limb back of the section steel beam in a welding mode, and distributing the lower rib plate on two sides of the section steel beam and the limb back bottom of the section steel beam to obtain a steel hoop;
(6) And the steel hoop are connected
Assembling the steel hoops connected in the step (5) on the top of the tower, firstly, butting the upper rib plates at the end parts of the two steel hoops, and connecting the two steel hoops through high-strength bolts after bolt holes are aligned; then, connecting the welding I-beams at the end parts of the two steel hoops through connecting plates by bolts, and sequentially installing the welding I-beams according to the sequence until the welding I-beams are completed;
(7) Placing tuned mass dampers
And (4) after the steel hoops in the step (6) are assembled in sections, placing small tuned mass dampers on each section of steel hoop, wherein the small tuned mass dampers are uniformly distributed along the ring shape of the tower body.
6. The method of installing an apparatus for placing a tuned mass damper according to claim 5, wherein: the vertical height of the steel hoop plate in the step (1) is 2.1m, the overhanging length is 1.8m, the thickness dimension is 25mm, the angle of the steel hoop plate is 45 degrees, Q345 steel is adopted, the yield strength is not lower than 345MPa, the gap between the steel hoop plates overhanging each steel hoop is 20mm, and the number of the bolt holes in the step (2) is 5.
7. The method of installing an apparatus for placing tuned mass dampers according to claim 6 wherein: step (3) the cross sectional dimension of bearing diagonal and horizontal support all adopts the circular steel tube, and the circular steel tube diameter is 194mm, and thickness is 12mm, step (4) the cross sectional dimension of welding I-beam is got and is I344mm x 348mm x 10mm x 16mm, and channel-section steel [16a ] is got to the shaped steel roof beam, in step (5) lower floor mainly used improves the rigidity and the fixed shaped steel roof beam of hoop board, and its thickness dimension can be 10mm, in step (6) a total eight of hoop.
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| CN102425244A (en) * | 2011-10-19 | 2012-04-25 | 沈阳建筑大学 | Multidirectional multi-frequency tuned mass damper |
| CN102864853B (en) * | 2012-09-29 | 2014-09-17 | 浙江工业大学 | Tuned mass damper for performing vibration attenuation on tall tower |
| CN203080721U (en) * | 2012-12-29 | 2013-07-24 | 浙江工业大学 | High-rise structure vibration damping control device with novel steel rope dampers |
| CN204491881U (en) * | 2015-01-29 | 2015-07-22 | 苏州科技学院 | Annular curvature associated shape memorial alloy damping device |
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| CN106088770B (en) * | 2016-08-04 | 2018-02-23 | 上海路博减振科技股份有限公司 | A kind of adjustable pendulum length single pendulum tuned mass damper of ring-type |
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