CN110565859B - Energy dissipation vibration reduction supporting rod and chord support combined floor supported by same - Google Patents
Energy dissipation vibration reduction supporting rod and chord support combined floor supported by same Download PDFInfo
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- CN110565859B CN110565859B CN201911043198.0A CN201911043198A CN110565859B CN 110565859 B CN110565859 B CN 110565859B CN 201911043198 A CN201911043198 A CN 201911043198A CN 110565859 B CN110565859 B CN 110565859B
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 54
- 238000013016 damping Methods 0.000 claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 239000004567 concrete Substances 0.000 claims description 20
- 210000001503 joint Anatomy 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000035939 shock Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention provides an energy dissipation and vibration reduction brace rod and a chord support combined floor supported by the same, and belongs to the technical field of building floor construction. The energy dissipation vibration reduction stay bar comprises a first connecting rod section, a telescopic damping rod section, a concentrated mass rod section, a second connecting rod section and a guy cable clamp; the telescopic damping rod section comprises a first bearing plate, a second bearing plate and a telescopic damping assembly connected between the first bearing plate and the second bearing plate; the telescopic damping assembly comprises a viscous damper, a spring, an inner sleeve and an outer sleeve, wherein the axial upper ends of the viscous damper and the spring are connected to the first bearing plate, the axial lower ends of the viscous damper and the spring are connected to the second bearing plate, the axial end of the inner sleeve is inserted into the outer sleeve, the inner sleeve and the outer sleeve can slide relatively, and the inner sleeve and the outer sleeve are respectively connected to the different bearing plates.
Description
Technical Field
The invention belongs to the technical field of building floor construction, and particularly relates to an energy dissipation vibration reduction stay bar and a chord support combined floor supported by the same.
Background
With the rapid development of economic, social, cultural and sports industries in China, large-scale public buildings are built on a large scale, and meanwhile, higher demands are put forward for large-span floor structures. In the existing large-span floor structure form, the chord support combined floor is widely applied because of higher structural efficiency and spanning capacity. The chord support combined floor consists of a concrete floor, a steel beam, a stay bar and a stay rope, belongs to a composite structure, can fully exert the advantages of high compression strength of concrete materials and high tensile strength of steel materials and stay rope materials, can realize larger span by using a small amount of building materials and small-size member sections, and reduces the dead weight of the structure to a large extent.
However, the problem of human vibration is common in large-span floor structures, namely, the floor can generate perceived vibration under the excitation of human bodies, and normal use of the building is affected. For the chord support combined floor structure, the higher bearing efficiency reduces the consumption of building materials and the cross section size of members, realizes larger span, but simultaneously reduces the structural quality, rigidity and damping, and the mass and rigidity are reduced to ensure that the floor structure is easy to vibrate under the excitation of the outside, and the damping reduction reduces the energy consumption capability of the structure, so that the vibration attenuation is slower. It can be seen that the problem of human vibration of the existing chord support combined floor structure is particularly remarkable.
Therefore, how to solve the problem of human vibration of a large-span floor structure, in particular to a chord support combined floor structure is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the technical problems, the invention provides the energy dissipation and vibration reduction brace rod and the chord support combined floor supported by the same, and the energy dissipation and vibration reduction brace rod can quickly dissipate energy and reduce vibration on the premise of ensuring stable support, so that the energy dissipation and vibration reduction brace rod can effectively control vibration, and is used for supporting a large-span floor, especially the chord support combined floor, and can effectively relieve the human-induced vibration of a floor structure.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The invention provides an energy dissipation vibration reduction stay bar, which comprises a first connecting rod section, a telescopic damping rod section, a concentrated mass rod section, a second connecting rod section and a guy cable clamp, wherein the first connecting rod section, the telescopic damping rod section, the concentrated mass rod section and the second connecting rod section are coaxially arranged and are sequentially connected from top to bottom; the telescopic damping rod section comprises a first bearing plate connected with the first connecting rod section, a second bearing plate connected with the concentrated mass rod section and a telescopic damping assembly connected between the first bearing plate and the second bearing plate; the plate surfaces of the first bearing plate and the second bearing plate are perpendicular to the axis, and the telescopic damping assembly comprises a viscous damper, a spring, an inner sleeve and an outer sleeve which are coaxially sleeved in sequence from inside to outside; the upper axial ends of the viscous damper and the spring are connected to the first bearing plate through a first connecting piece, and the lower axial ends of the viscous damper and the spring are connected to the second bearing plate through a second connecting piece; the axial one end of the inner sleeve is inserted into the outer sleeve, the inner sleeve and the outer sleeve can slide relatively, the axial other end of the inner sleeve is fixedly connected with the first bearing plate or the second bearing plate, the outer sleeve is not connected with the axial end of the inner sleeve, and the outer sleeve is fixedly connected with the bearing plate which is not connected with the inner sleeve in the first bearing plate and the second bearing plate.
Preferably, the top surface of the first connecting piece is fixedly connected with the bottom surface of the first bearing plate, the bottom surface of the first connecting piece is fixedly connected with the axial upper end of the viscous damper, and the periphery of the first connecting piece is provided with a thread-shaped first groove which is used for being in threaded connection with the axial upper end of the spring; the bottom surface of second connecting piece with the top surface fixed connection of second load-bearing plate, the top surface of second connecting piece with viscous damper's axial lower extreme fixed connection, the periphery of second connecting piece be equipped with be used for with spring axial lower extreme threaded connection's screw thread form second recess.
Preferably, the outer wall of the inner sleeve is in sliding fit with the inner wall of the outer sleeve.
Preferably, the concentrated mass bar section comprises a concentrated mass in the form of a rod.
Preferably, the first connecting rod section comprises a first connecting rod body, and the axial lower end of the first connecting rod body is fixedly connected with a first connecting plate which is in butt joint connection with a first bearing plate of the telescopic damping rod section; the concentrated mass rod section further comprises a second connecting plate fixedly connected to the axial upper end of the concentrated mass block and a third connecting plate fixedly connected to the axial lower end of the concentrated mass block, and the second connecting plate is in butt joint connection with a second bearing plate of the telescopic damping rod section; the second connecting rod section comprises a second connecting rod body, and a fourth connecting plate in butt joint connection with the third connecting plate is fixedly connected to the axial upper end of the second connecting rod body.
Preferably, the first connecting rod section further comprises a first lug plate fixedly connected to the axial upper end of the first connecting rod body; the second connecting rod section further comprises a second lug plate fixedly connected to the axial lower end of the second connecting rod body, and the inhaul cable clamp is hinged to the second lug plate.
Preferably, the first connecting rod body of the first connecting rod section and the second connecting rod body of the second connecting rod section are hollow tubes.
The invention also provides a chord support combined floor system, which comprises a concrete slab, wherein the bottom surface of the concrete slab is fixedly connected with a plurality of steel beams, and the steel beams are mutually arranged in parallel and uniformly distributed on the bottom surface of the concrete slab; each steel beam is connected with a cable rod supporting assembly, and each cable rod supporting assembly comprises a inhaul cable and a plurality of energy dissipation and vibration reduction supporting rods according to any one of the technical schemes; the energy dissipation and vibration reduction supporting rods are arranged in a row along the extending direction of the steel beam, the energy dissipation and vibration reduction supporting rods are perpendicular to the bottom surface of the concrete slab, and the first connecting rod sections of the energy dissipation and vibration reduction supporting rods are connected with the steel beam; the cable, girder steel, many the setting of the energy dissipation damping vaulting pole is vertical plane altogether, the both ends of cable connect respectively in the both ends of girder steel, just the cable passes in proper order and arranges the many of setting the cable clamp of energy dissipation damping vaulting pole.
Compared with the prior art, the invention has the advantages that:
1. according to the energy dissipation vibration reduction brace rod, the first connecting rod section is connected with the steel beam of the floor system, the second connecting rod section is connected with the inhaul cable through the inhaul cable clamp, the telescopic damping rod section positioned between the first connecting rod section and the second connecting rod section is telescopic through the spring and the viscous damper, and the inner sleeve and the outer sleeve slide relatively, so that the energy dissipation vibration reduction function is achieved on the premise that the elastic force provided by the spring ensures the bearing capacity of the brace rod, the mass rod section is concentrated to play the role of inertial mass, the inertial force opposite to the exciting force is provided, the effective control of vibration is realized, and the manual vibration of the floor system structure can be relieved rapidly and effectively;
2. In the energy-dissipation vibration-reduction stay bar provided by the invention, the outer part of the telescopic damping rod section adopts the nested structure form of the inner sleeve and the outer sleeve, so that the energy-dissipation vibration-reduction stay bar has bending-resistant bearing capacity on the premise of not influencing the inner spring deformation and the energy consumption function of the viscous damper, and the support stability of the stay bar in the construction and use processes is ensured;
3. the energy dissipation vibration reduction stay bar provided by the invention has the advantages of simple structure and low manufacturing cost, and is beneficial to industrial production;
4. the chord support combined floor system supported by the energy dissipation and vibration reduction support rod has the advantages that the upper part of the chord support combined floor system is a rigid structure formed by concrete plates and steel beams, the lower part of the chord support combined floor system is a cable support assembly formed by the energy dissipation and vibration reduction support rod and a inhaul cable, and when the inhaul cable applies prestress, the energy dissipation and vibration reduction support rod is used as an elastic support of the upper rigid structure, so that the manual vibration of the floor system structure can be relieved rapidly and effectively;
5. The chord support combined floor system supported by the energy dissipation vibration reduction supporting rod has the advantages of simple composition, definite force transmission, strong vibration control capability, high structural efficiency and strong crossing capability, and is a reasonable large-span floor system structural form.
Drawings
FIG. 1 is a schematic diagram of a structure of an energy dissipating and vibration damping brace provided by an embodiment of the present invention;
FIG. 2 is an exploded view of an energy dissipating and vibration damping brace provided in an embodiment of the present invention;
FIG. 3 is an exploded view of a telescoping damping rod segment in an energy dissipating and shock absorbing brace provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a chord support combined floor system according to an embodiment of the present invention;
FIG. 5 is an exploded view of a chord support combined floor system according to an embodiment of the present invention;
In the above figures: 1. energy dissipation vibration reduction supporting rods; 11. a first connecting rod section; 111. a first ear plate; 112. a first connecting rod body; 113. a first connection plate; 12. a telescopic damping rod section; 121. a first force bearing plate; 122. a telescopic damping assembly; 1221. an outer sleeve; 12211. an outer sleeve half body; 1222. a first connector; 1223. a spring; 1224. a viscous damper; 1225. a second connector; 1226. an inner sleeve; 123. a second force bearing plate; 13. centralizing the mass rod segment; 131. a second connecting plate; 132. a concentrating mass; 133. a third connecting plate; 14. a second connecting rod section; 141. a fourth connecting plate; 142. a second connecting rod body; 143. a second ear plate; 15. a guy cable clamp; 16. a bolt; 17. a pin shaft; 2. a concrete slab; 3. a steel beam; 4. and (5) a inhaul cable.
Detailed Description
The present invention will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "inner", "outer", "upper", "lower", "front", "rear", etc. are based on the positional relationship shown in fig. 1 or fig. 4, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-3, the embodiment of the invention relates to an energy dissipation and vibration reduction brace rod 1, which comprises a first connecting rod section 11, a telescopic damping rod section 12, a concentrated mass rod section 13 and a second connecting rod section 14 which are coaxially arranged and sequentially connected from top to bottom, and a guy cable clamp 15 connected to the lower end of the second connecting rod section 14; the telescopic damping rod section 12 comprises a first bearing plate 121 connected to the first connecting rod section 11, a second bearing plate 123 connected to the concentrated mass rod section 13, and a telescopic damping assembly 122 connected between the first bearing plate 121 and the second bearing plate 123; the plate surfaces of the first bearing plate 121 and the second bearing plate 123 are perpendicular to the axis, and the telescopic damping assembly 122 comprises a viscous damper 1224, a spring 1223, an inner sleeve 1226 and an outer sleeve 1221 which are coaxially sleeved in sequence from inside to outside; the axial upper ends of the viscous damper 1224 and the spring 1223 are connected to the first load bearing plate 121 by a first connector 1222, and the axial lower ends of the viscous damper 1224 and the spring 1223 are connected to the second load bearing plate 123 by a second connector 1225; one axial end of the inner sleeve 1226 is inserted into the outer sleeve 1221, the inner sleeve 1226 and the outer sleeve 1221 can slide relatively, the other axial end of the inner sleeve 1226 is fixedly connected to the first bearing plate 121 or the second bearing plate 123, the outer sleeve 1221 is not connected to the axial end of the inner sleeve 1226, and the inner sleeve 1226 is not connected to the bearing plate of the first bearing plate 121 or the second bearing plate 123.
Above-mentioned energy dissipation damping vaulting pole 1 connects girder steel 3 of superstructure through head rod section 11, connect cable 4 through second connecting rod section 14 and cable clamp 15, flexible damping pole section 12 that is located between head rod section 11 and the second connecting rod section 14 is through the flexible of spring 1223 and viscous damper 1224, and the relative slip of interior sleeve pipe 1226 and outer tube 1221, under the prerequisite that spring 1223 provided elastic force assurance vaulting pole bearing capacity, play energy dissipation damping effect, concentrate the effect that quality pole section 13 played inertial mass, provide the inertial force opposite with the exciting force, the effective control to vibration has been realized, can quick effectual personnel's of alleviating the superstructure structure vibrate. In addition, in the energy dissipation and vibration reduction brace rod 1, the outer part of the telescopic damping rod section 12 adopts the nested structure form of the inner sleeve 1226 and the outer sleeve 1221, so that the energy dissipation and vibration reduction brace rod 1 has bending resistance bearing capacity on the premise of not influencing the deformation of the inner spring 1223 and the energy dissipation function of the viscous damper 1224, and the support stability of the brace rod in the construction and use processes is ensured. In addition, the energy dissipation vibration reduction stay bar 1 has a simple structure and low manufacturing cost, and is beneficial to industrial production.
It should be noted that, in the telescopic damping rod section 12 of the energy dissipation and vibration reduction brace rod 1, the first bearing plate 121 and the second bearing plate 123 are bearing surfaces, and simultaneously play a role in connecting the first connecting rod section 11 and the concentrated mass rod section 13; the viscous damper 1224 and the spring 1223 in the telescopic damping assembly 122 function to ensure strut load capacity and energy dissipation and vibration reduction, while the inner sleeve 1226 and the outer sleeve 1221 function to resist bending.
In this embodiment, as shown in fig. 2 and 3, the viscous damper 1224 and the spring 1223 are specifically connected, the top surface of the first connecting member 1222 is fixedly connected to the bottom surface of the first bearing plate 121, the bottom surface of the first connecting member 1222 is fixedly connected to the axial upper end of the viscous damper 1224, and the periphery of the first connecting member 1222 is provided with a threaded first groove for being screwed to the axial upper end of the spring 1223; the bottom surface of the second connecting piece 1225 is fixedly connected with the top surface of the second bearing plate 123, the top surface of the second connecting piece 1225 is fixedly connected with the axial lower end of the viscous damper 1224, and a threaded second groove for being in threaded connection with the axial lower end of the spring 1223 is formed in the periphery of the second connecting piece 1225. In this embodiment, the viscous damper 1224 is connected in parallel with the spring 1223, and by adjusting the damping value of the viscous damper 1224 and the stiffness of the spring 1223, the energy consumption capability of the viscous damper 1224, the expansion capability of the spring 1223 and the resonance with the concentrated mass rod section 13 can be controlled, so as to realize the regulation and control of the energy-canceling vibration damping effect, so as to be suitable for the chord support combined floor systems with different vibration conditions.
Further, as shown in fig. 2, the outer wall of the inner sleeve 1226 is a sliding fit with the inner wall of the outer sleeve 1221 and there is a length of nesting. When the inner tube 1226 and the outer tube 1221 are disposed in this way, the outer wall of the inner tube 1226 contacts the inner wall of the outer tube 1221, which is advantageous for improving the bending load capacity of the inner tube 1226 and the outer tube 1221. It should be noted that, the inner sleeve 1226 and the outer sleeve 1221 are connected to different bearing plates, and in this embodiment, the following is specifically described: the outer sleeve 1221 is connected to the first force bearing plate 121 and the inner sleeve 1226 is connected to the second force bearing plate 123. It will be appreciated that one skilled in the art may also connect the outer sleeve 1221 to the second load bearing plate 123 and the inner sleeve 1226 to the first load bearing plate 121. For ease of assembly, the outer sleeve 1221 is formed by welding two outer sleeve halves 12211 that are symmetrically disposed about an axis, as shown in fig. 3.
The assembly method of the telescopic damping assembly 122 in this embodiment is as follows: the viscous damper 1224 is sleeved in the spring 1223, the spring 1223 is compressed to expose the two axial ends of the viscous damper 1224, and the upper axial end and the lower axial end of the viscous damper 1224 are respectively connected to the bottom surface of the first connecting piece 1222 and the top surface of the second connecting piece 1225, which can be welded or bolted; then, the first and second connection pieces 1222 and 1225 are screwed into the axial upper and lower ends of the spring 1223, respectively; then, the bottom surface of the second connecting piece 1225 is welded to the top surface of the second bearing plate 123, the inner sleeve 1226 is sleeved outside the spring 1223, the axial lower end of the inner sleeve 1226 is welded to the top surface of the second bearing plate 123, the top surface of the first connecting piece 1222 is welded to the bottom surface of the first bearing plate 121, the two outer sleeve halves 12211 are fastened outside the inner sleeve 1226 and welded into a whole, and the axial upper end of the welded outer sleeve 1221 is welded to the bottom surface of the first bearing plate 121.
Further, in the present embodiment, as shown in fig. 2, the concentrated mass rod section 13 includes a concentrated mass 132 in a rod shape to function as an inertial mass to provide an inertial force opposite to the exciting force.
To facilitate the sequential connection of the first connecting rod segment 11, the telescopic damping rod segment 12, the concentrated mass rod segment 13 and the second connecting rod segment 14, as shown in fig. 2: the first connecting rod section 11 comprises a first connecting rod body 112, and the axial lower end of the first connecting rod body 112 is fixedly connected with a first connecting plate 113 which is in butt joint connection with a first bearing plate 121 of the telescopic damping rod section 12; the concentrated mass rod section 13 further comprises a second connecting plate 131 fixedly connected to the axial upper end of the concentrated mass block 132 and a third connecting plate 133 fixedly connected to the axial lower end of the concentrated mass block 132, and the second connecting plate 131 is in butt joint connection with the second bearing plate 123 of the telescopic damping rod section 12; the second connecting rod section 14 includes a second connecting rod body 142, and a fourth connecting plate 141 in butt connection with the third connecting plate 133 is fixedly connected to an axial upper end of the second connecting rod body 142. In this embodiment, the first connecting plate 113 and the first bearing plate 121, the second bearing plate 123 and the second connecting plate 131, and the third connecting plate 133 and the fourth connecting plate 141 are all connected by bolts 16, and it is understood that other connection methods may be adopted by those skilled in the art.
Further, in order to facilitate the connection of the energy dissipation and vibration reduction brace bar 1 to the steel beam 3 of the floor system, as shown in fig. 1 and 2, the first connecting rod segment 11 further includes a first ear plate 111 fixedly connected to the axial upper end of the first connecting rod body 112. To facilitate connection of the cable clip 15 to the second connecting rod segment 14, as shown in fig. 1 and 2, the second connecting rod segment 14 further includes a second lug plate 143 fixedly connected to an axially lower end of the second connecting rod body 142, and the cable clip 15 is hinged to the second lug plate 143.
In addition, as shown in fig. 2, the first connecting rod 112 of the first connecting rod segment 11 and the second connecting rod 142 of the second connecting rod segment 14 are hollow tubes, so as to reduce the mass of the entire energy dissipation and vibration reduction brace rod 1 and reduce the production cost. It will be appreciated by those skilled in the art that solid tubes may also be used as the first and second connecting rods 112, 142.
The assembly method of the energy dissipation and vibration reduction stay bar 1 is as follows:
(1) Assembling a first connecting rod section 11, a telescopic damping rod section 12, a concentrated mass rod section 13 and a second connecting rod section 14 respectively; the assembling method of the first connecting rod section 11 is as follows: welding the first ear plate 111 and the first connection plate 113 to an axial upper end and an axial lower end of the first connection rod 112, respectively; the assembly method of the telescopic damping assembly 122 is as follows: sheathing the viscous damper 1224 into the spring 1223, compressing the spring 1223 to expose the two axial ends of the viscous damper 1224, connecting the upper axial end and the lower axial end of the viscous damper 1224 to the bottom surface of the first connecting member 1222 and the top surface of the second connecting member 1225, respectively, which may be welded or bolted, screwing the first connecting member 1222 and the second connecting member 1225 into the upper axial end and the lower axial end of the spring 1223, respectively, welding the bottom surface of the second connecting member 1225 to the top surface of the second loading plate 123, sheathing the inner sleeve 1226 outside the spring 1223, welding the lower axial end of the inner sleeve 1226 to the top surface of the second loading plate 123, welding the top surface of the first connecting member 1222 to the bottom surface of the first loading plate 121, fastening the outer sleeve halves 12211 to the outer sleeve 1226 and welding the upper axial ends of the welded outer sleeve 1221 to the bottom surface of the first loading plate 121; the assembly method of the concentrated mass pole section 13 is as follows: the second connecting plate 131 and the third connecting plate 133 are welded to the axial upper end and the axial lower end of the concentrated mass 132, respectively; the method of assembling the second connecting rod section 14 is: the fourth connection plate 141 and the second lug plate 143 are welded to the axial upper end and the axial lower end of the second connection rod 142, respectively.
(2) The first connection plate 113 of the first connection rod section 11 and the first bearing plate 121 of the telescopic damping rod section 12 are connected in butt joint by bolts 16, the second bearing plate 123 of the telescopic damping rod section 12 and the second connection plate 131 of the concentrated mass rod section 13 are connected in butt joint by bolts 16, and the third connection plate 133 of the concentrated mass rod section 13 and the fourth connection plate 141 of the second connection rod section 14 are connected in butt joint by bolts 16.
(3) The cable grip 15 is hinged to the second lug plate 143 of the second connecting rod section 14 by means of the pin 17.
As shown in fig. 4-5, the embodiment of the invention also provides a chord support combined floor system, which comprises a concrete slab 2, wherein the bottom surface of the concrete slab 2 is fixedly connected with a plurality of steel beams 3, and the steel beams 3 are mutually parallel and uniformly distributed on the bottom surface of the concrete slab 2; each steel beam 3 is connected with a cable rod supporting assembly which comprises a guy cable 4 and a plurality of energy dissipation and vibration reduction supporting rods 1; the energy dissipation and vibration reduction support rods 1 are arranged in a row along the extending direction of the steel beam 3, the energy dissipation and vibration reduction support rods 1 are perpendicular to the bottom surface of the concrete slab 2, and the first connecting rod sections 11 of the energy dissipation and vibration reduction support rods 1 are connected to the steel beam 3; the guy cable 4 and the steel beam 3 and the plurality of energy dissipation and vibration reduction supporting rods 1 are arranged on the same vertical plane, two ends of the guy cable 4 are respectively connected to two ends of the steel beam 3, and the guy cable 4 sequentially penetrates through guy cable clamps 15 of the plurality of energy dissipation and vibration reduction supporting rods 1 arranged in a row.
According to the chord support combined floor system, the upper portion of the chord support combined floor system is a rigid structure formed by the concrete slab 2 and the steel beam 3, the lower portion of the chord support combined floor system is a cable rod supporting assembly formed by the energy dissipation vibration reduction supporting rod 1 and the cable 4, and after the cable 4 is prestressed, the energy dissipation vibration reduction supporting rod 1 is used as an elastic support of the upper rigid structure, so that the manual vibration of the floor system structure can be relieved quickly and effectively. Moreover, the chord support combined floor system has the advantages of simple composition, definite force transmission, strong vibration control capability, high structural efficiency and strong spanning capability, and is a reasonable large-span floor system structural form.
The assembly method of the chord support combined floor system comprises the following steps: according to the span of the steel beam 3, sequentially connecting a plurality of energy dissipation and vibration reduction supporting rods 1 to the steel beam 3, sequentially penetrating a guy cable 4 through guy cable clamps 15 of the plurality of energy dissipation and vibration reduction supporting rods 1, and fixedly connecting two ends of the guy cable 4 to two ends of the steel beam 3, so that the assembly of one steel beam 3 and one group of cable rod supporting components can be completed; and installing templates for pouring the concrete slabs 2 on the plurality of groups of assembled steel beams 3, binding reinforcing steel bars and pouring concrete.
Claims (5)
1. The chord support combined floor system is characterized in that: the concrete slab comprises a concrete slab, wherein the bottom surface of the concrete slab is fixedly connected with a plurality of steel beams, and the steel beams are mutually arranged in parallel and uniformly distributed on the bottom surface of the concrete slab; each steel beam is connected with a cable rod supporting assembly, and each cable rod supporting assembly comprises a inhaul cable and a plurality of energy dissipation vibration reduction supporting rods;
The energy dissipation and vibration reduction stay bar comprises a first connecting rod section, a telescopic damping rod section, a concentrated mass rod section, a second connecting rod section and a guy cable clamp, wherein the first connecting rod section, the telescopic damping rod section, the concentrated mass rod section and the second connecting rod section are coaxially arranged and sequentially connected from top to bottom; the telescopic damping rod section comprises a first bearing plate connected with the first connecting rod section, a second bearing plate connected with the concentrated mass rod section and a telescopic damping assembly connected between the first bearing plate and the second bearing plate; the plate surfaces of the first bearing plate and the second bearing plate are perpendicular to the axis, and the telescopic damping assembly comprises a viscous damper, a spring, an inner sleeve and an outer sleeve which are coaxially sleeved in sequence from inside to outside; the upper axial ends of the viscous damper and the spring are connected to the first bearing plate through a first connecting piece, and the lower axial ends of the viscous damper and the spring are connected to the second bearing plate through a second connecting piece; the axial end of the inner sleeve is inserted into the outer sleeve, the inner sleeve and the outer sleeve can slide relatively, the outer wall of the inner sleeve is in sliding fit with the inner wall of the outer sleeve, the axial other end of the inner sleeve is fixedly connected with the first bearing plate or the second bearing plate, the outer sleeve is not connected with the axial end of the inner sleeve, and the outer sleeve is fixedly connected with the bearing plate which is not connected with the inner sleeve in the first bearing plate and the second bearing plate; the concentrated mass rod section comprises a rod-shaped concentrated mass block;
The energy dissipation and vibration reduction supporting rods are arranged in a row along the extending direction of the steel beam, the energy dissipation and vibration reduction supporting rods are perpendicular to the bottom surface of the concrete slab, and the first connecting rod sections of the energy dissipation and vibration reduction supporting rods are connected with the steel beam; the cable, girder steel, many the setting of the energy dissipation damping vaulting pole is vertical plane altogether, the both ends of cable connect respectively in the both ends of girder steel, just the cable passes in proper order and arranges the many of setting the cable clamp of energy dissipation damping vaulting pole.
2. The chord support composite floor system according to claim 1, wherein: the top surface of the first connecting piece is fixedly connected with the bottom surface of the first bearing plate, the bottom surface of the first connecting piece is fixedly connected with the axial upper end of the viscous damper, and a threaded first groove for being in threaded connection with the axial upper end of the spring is formed in the periphery of the first connecting piece; the bottom surface of second connecting piece with the top surface fixed connection of second load-bearing plate, the top surface of second connecting piece with viscous damper's axial lower extreme fixed connection, the periphery of second connecting piece be equipped with be used for with spring axial lower extreme threaded connection's screw thread form second recess.
3. The chord support composite floor system according to claim 1, wherein: the first connecting rod section comprises a first connecting rod body, and the axial lower end of the first connecting rod body is fixedly connected with a first connecting plate which is in butt joint connection with a first bearing plate of the telescopic damping rod section; the concentrated mass rod section further comprises a second connecting plate fixedly connected to the axial upper end of the concentrated mass block and a third connecting plate fixedly connected to the axial lower end of the concentrated mass block, and the second connecting plate is in butt joint connection with a second bearing plate of the telescopic damping rod section; the second connecting rod section comprises a second connecting rod body, and a fourth connecting plate in butt joint connection with the third connecting plate is fixedly connected to the axial upper end of the second connecting rod body.
4. A chord support composite floor according to claim 3, wherein: the first connecting rod section further comprises a first lug plate fixedly connected to the axial upper end of the first connecting rod body; the second connecting rod section further comprises a second lug plate fixedly connected to the axial lower end of the second connecting rod body, and the inhaul cable clamp is hinged to the second lug plate.
5. The chord support composite floor according to claim 3 or4, wherein: the first connecting rod body of the first connecting rod section and the second connecting rod body of the second connecting rod section are hollow pipes.
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| CN111305441A (en) * | 2020-02-28 | 2020-06-19 | 青岛理工大学 | Energy-dissipating vibration-reducing hollow composite floor system |
| CN114108946B (en) * | 2021-11-24 | 2023-01-24 | 山东大学 | Spring damping energy dissipation vibration attenuation beam, roof system and construction method |
| CN114108945B (en) * | 2021-11-24 | 2023-01-24 | 山东大学 | Vibration reduction inhaul cable beam string structure and method |
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| KR101297884B1 (en) * | 2004-03-03 | 2013-08-19 | 폴리발러 리미티드 파트너쉽 | Self-Centering Energy Dissipative Brace Apparatus with Tensioning Elements |
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