CN112049500B - Multistage damping flat beam-floor system based on solid spiral spring pin connection - Google Patents
Multistage damping flat beam-floor system based on solid spiral spring pin connection Download PDFInfo
- Publication number
- CN112049500B CN112049500B CN202010790037.4A CN202010790037A CN112049500B CN 112049500 B CN112049500 B CN 112049500B CN 202010790037 A CN202010790037 A CN 202010790037A CN 112049500 B CN112049500 B CN 112049500B
- Authority
- CN
- China
- Prior art keywords
- flat beam
- spring pin
- spiral spring
- bolt holes
- short beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Floor Finish (AREA)
Abstract
The invention discloses a multi-stage damping flat beam-floor system based on solid spiral spring pin connection, and belongs to the technical field of fabricated steel structure earthquake resistance. The system comprises a column, a short beam, a flat beam, a groined integral floor slab, a perforated plate type metal damper, a solid spiral spring pin for connecting the floor slab and the flat beam, a filling layer and a plurality of connecting pieces for connecting the short beam and the flat beam. The system adopts prefabricated assembly construction, does not need wet operation, and can effectively shorten the construction period; and under the earthquake action, the groined integral floor slab can slide relative to the flat beam, the solid-web spiral spring pin can generate shearing plastic deformation, the weakened node and the weakened beam section can generate plastic deformation, the perforated plate type metal damper can generate plastic deformation under the pulling and pressing action of the floor slab, the plastic deformation can realize the dissipation of earthquake energy and protect the integral safety of the building, and meanwhile, the plastic deformation is controlled in a specific area, so that the aim of replacing components after the earthquake to realize the repairable structure can be conveniently realized.
Description
Technical Field
The invention relates to a multi-stage damping flat beam-floor system based on solid spiral spring pin connection, and belongs to the technical field of fabricated steel structure earthquake resistance. The system adopts a construction method of factory prefabrication and field assembly of components, avoids wet operation, is simple, convenient and quick to construct, and safe and reliable in performance, energy consumption of the plastic hinge area is preset under the action of an earthquake, and multiple shock absorption defense lines are provided, so that the overall energy consumption efficiency is improved, and the safety of the overall structure can be effectively ensured.
Background
The fabricated steel structure has the advantages of short construction period, small manpower demand and high industrialization degree, and the steel has the characteristics of high strength and high ductility, and the anti-seismic performance of the fabricated steel structure is also superior. By combining the advantages, the assembled steel structure meets the common requirements of modern society on construction efficiency and building safety. Meanwhile, along with the generation and development of a full assembly type concept without wet operation and a concept that structural performance can be restored by replacing structural members after an earthquake, the assembly type steel structure has great development potential.
In the construction and design of the fabricated steel structure at the present stage, the connection between the floor slab and the beam mostly adopts wet operation and over emphasizes the integrity of the connection between the floor slab and the beam. This is obviously problematic in that the wet process operation significantly prolongs the construction period of the building, and has a certain negative effect on the construction efficiency. Secondly, the integrity of the beam and the floor slab is over emphasized, so that the design conception of the strong column and the weak beam under the earthquake action is difficult to realize due to the constraint action and the rigidity contribution of the floor slab to the beam, the plastic deformation area of the structure is difficult to control under the earthquake action, the risk of structural damage is increased, and a large number of components are required to be replaced to completely restore the structural performance when the structure is repaired after an earthquake. Meanwhile, in the assembly type structure at the present stage, when the floor system is applied to shock absorption, a support is generally considered to be arranged at the lower part of a floor to form a shock absorption and isolation floor system or a sliding floor system. Although the measures can effectively reduce the earthquake response of the structure and protect the whole safety of the structure, the construction is difficult because the floor part has a complex structure, and simultaneously, because the shock absorption and isolation equipment such as the support is added, the structure cost is directly increased, and simultaneously, the height of the floor layer of the structure is increased rapidly to compress the use space of the building.
Through the analysis, the invention provides a multi-stage damping flat beam-floor system based on solid-web spiral spring pin connection. The system adopts a solid spiral spring pin as a connecting piece between a floor slab and a flat beam. When the flat beam is connected with the prefabricated floor slab, the solid-web spiral spring pin is inserted into a connecting hole between the floor slab and the flat beam from the lower part of the flat beam by means of hammering or heat treatment, and the like, and then the diameter of the solid-web spiral spring pin in a non-compression state is slightly larger than that of the connecting hole between the lower flange of the flat beam and the bottom of the floor slab, so that self-tightening can be realized due to the elasticity of the solid-web spiral spring pin when the solid-web spiral spring pin is inserted into the connecting hole. The floor slab and flat beam connecting holes can be reserved directly in the prefabricated part stage of a factory, and holes can be punched in the site during site construction. The connection method is simple and easy to implement, does not need wet operation, and can greatly improve the construction efficiency. In addition, the solid-web spiral spring pin provided by the invention is internally provided with the ductile core material, so that the defect of insufficient shear rigidity of the spiral spring pin is overcome, the ductility, the fatigue resistance and the energy consumption performance of the spiral spring pin under the reciprocating shearing action are improved, and the floor slab and the beam are reliably connected. Meanwhile, the outer surface of the solid spiral spring pin is also subjected to rough treatment, so that the friction between the solid spiral spring pin and the hole wall can be increased, and the solid spiral spring pin is not easy to slip out after being installed to cause connection failure. Under the action of earthquake, the floor slab and the flat beam may slide relatively, so as to ensure the solid-web spiral spring pin to exert the energy dissipation and vibration reduction performance and prevent the floor slab from pulling the solid-web spiral spring pin off from the flat beam to cause connection failure. The solid spiral spring pin is provided with a cap-shaped clamping piece at one end, the diameter of the clamping piece is larger than that of the solid spiral spring pin and that of a connecting hole on the lower flange of the flat beam, and the solid spiral spring pin can be effectively prevented from being pulled away from the flat beam by a floor under the action of an earthquake. Therefore, the solid-web spiral spring pin is adopted to connect the flat beam and the floor slab, and the connecting mode has the advantages of reliable connection, simple and convenient construction, capability of realizing shearing plastic deformation and dissipating seismic energy under the action of an earthquake and the like. Meanwhile, the invention introduces the perforated plate type metal damper. Because the connection mode of using the solid spiral spring pin to connect the flat beam and the floor slab is flexible connection compared with the concrete cast-in-place connection, the floor slab and the flat beam can generate certain relative slippage under the action of an earthquake, and the perforated plate damper can generate in-plane plastic deformation under the action of floor slab extrusion or stretching, thereby dissipating certain earthquake energy. In addition, the invention partially weakens the short beam-flat beam combination beam. The short beams at the two ends have higher strength and rigidity, and the middle short beam and the short beam-flat beam connecting joint has lower rigidity. Under the action of earthquake, the weakening section can serve as a fuse of the structure, plastic deformation is concentrated in the area, the damping and energy dissipation effects are actively exerted, and the overall safety of the structure is protected.
The innovation of the system on the connecting piece layer obviously improves the defects of expensive manufacturing cost and difficult construction of the existing floor system damping system. Meanwhile, the system introduces the flat beam, the thickness of the floor layer is reduced, the structural height is reduced under the same use space, and the structural cost is reduced. In addition, the system presets a plastic hinge area and a solid spiral spring pin to jointly consume energy under the action of an earthquake, and has a plurality of shock absorption defense lines, so that the overall energy consumption efficiency is improved, and the safety of the overall structure is more effectively ensured.
Disclosure of Invention
The method aims to solve the problems that the construction period is prolonged by wet operation when the existing floor slab is connected with a beam, the anti-seismic potential of a floor system is not excavated, the accurate control of a plastic deformation area cannot be realized, the repair is difficult after the earthquake, and the like. The invention provides a multi-stage damping flat beam-floor system based on solid spiral spring pin connection, and the innovation of the system on the level of a connecting piece obviously improves the defects of high manufacturing cost and difficult construction of the existing floor damping system. Meanwhile, the system introduces the flat beam, the thickness of the floor layer is reduced, the structural height is reduced under the same use space, and the structural cost is reduced. In addition, the system presets a plastic hinge area and a solid spiral spring pin to jointly consume energy under the action of an earthquake, and has a plurality of shock absorption defense lines, so that the overall energy consumption efficiency is improved, and the safety of the overall structure is more effectively ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-stage damping flat beam-floor system based on solid spiral spring pin connection is characterized in that a short beam 2 is rigidly connected to the side of a column 1, a flat beam 5 and the short beam 2 are connected through bolts and cover plates, the yield strength of the materials used for the cover plates is lower than that of the short beam, and the sectional area of the end section of the cover plate is smaller than or equal to that of the I-shaped section of the short beam, so that a weakening node is formed. The cover plates comprise an upper flange top cover plate 12, an upper flange bottom cover plate 13, a web cover plate 14, a lower flange top cover plate 15 and a lower flange bottom cover plate 16; the flat beam 5 and the short beam 2 are connected by bolts 11, an upper flange top cover plate 12 and an upper flange bottom cover plate 13. When the connection is carried out, an upper flange top cover plate 12 and an upper flange bottom cover plate 13 are respectively positioned at the top and the bottom of the upper flanges of the flat beam 5 and the short beam 2, bolts 11 are inserted after bolt holes of the cover plates are aligned with bolt holes of the upper flanges to realize the connection, and the upper flange bolt holes, namely the short beam bolt hole 4 and the long round bolt hole 6 are positioned at the hole positions of the upper flanges of the short beam 2 and the flat beam 5. Adopt bolt 11 and web apron 14 to realize being connected between the web of flat beam 5 and short beam 2, web apron 14 is located the web both sides of flat beam 5 and short beam 2 during the connection, aligns web bolt hole and inserts bolt 11 behind the web apron 14 bolt hole and realizes being connected, and the web bolt hole is short beam bolt hole 4 and long round bolt hole 6 and is located the hole site of short beam 2 and flat beam 5 web. The bolt 11 is utilized on the bottom flange of the flat beam 5 and the short beam 2, the bottom flange top cover plate 15 is connected with the bottom flange bottom cover plate 16, the bottom flange top cover plate 15 is located at the top of the bottom flange of the flat beam 5 and the short beam 2 during connection, the bottom flange bottom cover plate 16 is located at the bottom of the bottom flange of the flat beam 5 and the short beam 2, the bottom flange bolt holes of the flat beam 5 and the short beam 2 are aligned, the bolt 11 is inserted behind the bolt holes of the bottom flange top cover plate 15 and the bottom flange bottom cover plate 16 to realize connection, and the bottom flange bolt holes, namely the short beam bolt hole 4 and the long beam bolt hole 6 are located on the hole sites of the bottom flange of the short beam 2 and the flat beam 5.
The perforated plate type metal damper 17 is buckled with a floor slab embedded fastener 9 and a lower flange fastener 3 through edge holes to realize connection with a floor slab 8 and a short beam 2, a filling layer 21 is laid above the perforated plate type metal damper, so that the filling layer 21 and the whole floor are positioned on the same horizontal plane, and the filling layer 21 comprises a waterproof layer and a sound insulation layer; the solid spiral spring pin 20 penetrates through the flat beam reserved hole 7 and is inserted into the floor bottom connecting hole 10, and the diameter of the solid spiral spring pin 20 in a non-compression state is larger than that of the flat beam 5 lower flange connecting hole 7 and the floor bottom connecting hole 10, so that the solid spiral spring pin can expand under the action of self elasticity when being inserted into the connecting hole, and the reliable connection between the floor 8 and the flat beam 5 is ensured.
The solid helical spring pin 20 is formed by combining a middle cylindrical core material and a helical spring pin, and a certain gap is formed between the helical spring pin and the middle cylindrical core material. The diameter of the solid spiral spring pin 20 is within a range of 10 mm-40 mm in a non-compression state, the material used for the cylindrical core material in the middle of the solid spiral spring pin has high ductility, the material such as lead, shape memory alloy, low yield point mild steel and the like is used as the material of the core material, and the diameter of the inner core material can be 5 mm-20 mm. The spiral spring pin is formed by coiling a metal plate with dents or ribs and the like, and the surface of the metal plate is subjected to non-smooth treatment. The spiral spring pin is made of steel, the yield strength of the used steel is at least more than 235Mpa, the outer surface of the spiral spring pin is galvanized to prevent the spiral spring pin from being corroded and losing efficacy, the number of turns of the spiral spring pin can be 2-5 turns according to engineering requirements, and the thickness of the used metal plate can be 1-3 mm. Further, in order to prevent the coil spring pin from being loosened, an elastic material such as fatigue-resistant rubber or the like is impregnated between the coil spring pin coils and the coils. In addition, an adhesive can be coated outside the spiral spring pin, so that the connection effect of the spiral spring pin and the connection hole is further enhanced. Meanwhile, one end of the solid-web spiral spring pin 20 is provided with a cap-shaped clamping piece, and the diameter of the clamping piece is larger than the diameter of the solid-web spiral spring pin and the diameter of the lower flange connecting hole 7 of the flat beam 5, preferably larger than the diameter of the lower flange connecting hole 7 of the flat beam 5 by 5 mm-30 mm.
The short beam 2 is made of I-shaped steel, a lower flange fastener 3 is arranged at the top of a lower flange of the short beam, and a short beam bolt hole 4 is reserved at the end part of the short beam 2; the short beam bolt holes 4 are divided into upper flange bolt holes, lower flange bolt holes and web plate bolt holes; two or four rows of upper flange bolt holes are formed, each row of upper flange bolt holes are parallel to the beam axis direction of the short beam 2, the positions of the upper flange bolt holes are axisymmetrical about the center line of the web plate, and 2-8 bolt holes are formed in each row; the lower flange bolt holes 4 are generally arranged in two rows, four rows or six rows, the positions of the lower flange bolt holes are axisymmetrical about the middle axis of the web plate, 2-8 bolt holes are arranged in each row, and the lower flange bolt holes in each row are parallel to the beam axis direction of the short beam 2; the total number of the web plate bolt holes is two rows or four rows, 2-4 web plate bolt holes are arranged in each row, and each row of the web plate bolt holes is parallel to the beam axis direction of the short beam 2; the short beam 2 is made of I-steel with the length of 0.5 m-2 m according to engineering requirements, but the yield strength of the used steel is at least greater than 345Mpa so as to meet the strength requirement, and the short beam is not yielded before the weakened section of the beam part in the earthquake.
The width of the upper flange of the flat beam 5 is smaller than that of the lower flange, prefabricated holes 7 are formed in the lower flange, the prefabricated holes 7 are circular, the diameter of 5 mm-35 mm is selected according to the size of the flat beam 5 and required connection rigidity, the prefabricated holes 7 are distributed in rows, each row of prefabricated holes 7 is parallel to the axis direction of the beam, 1-3 rows of holes 7 can be selected, and the distance between every two adjacent holes 7 can be 100 mm-1000 mm; long round bolt holes 6 are formed in the lower flange, the web plate and the upper flange of the end portion of the flat beam 5, the long axis direction of each long round bolt hole 6 is consistent with the beam axis direction, 2 rows or 4 rows of upper flange long round bolt holes 6 are arranged on the whole, the positions of the upper flange long round bolt holes are axisymmetrical with the center axis of the web plate, and 2-8 bolt holes are arranged in each row of the bolt holes 6; the lower flange long round bolt holes 6 can be arranged in 2 rows, 4 rows or 6 rows, the positions of the lower flange long round bolt holes are symmetrical about a central axis of the web plate, and 2-8 bolt holes can be arranged in each row; the web plate long circular bolt holes 6 are in 2 rows or 4 rows in total, and 2-4 bolt holes can be arranged in each row; the flat beam 5 can use I-shaped steel with the width of the upper flange being less than that of the lower flange by 1.5-5 m according to engineering requirements, the width of the upper flange is not more than 80% of that of the lower flange, the yield strength of the used steel is at least more than 235MPa steel, and the yield strength of the selected steel is not more than that of the steel selected for the short beam 2.
When the flat beam 5 is connected with the short beam 2 through the connecting piece, the cover plate connecting piece can be made of common hot rolled steel, low-yield-point high-ductility mild steel or shape memory alloy and other materials according to the requirement, but the yield strength of the materials is lower than that of the materials used by the short beam 2. In addition, the cover plate connecting pieces are rectangular, and the total sectional area of the connecting pieces is not larger than the sectional area of the I-steel of the short beam 2, so that a weakened node is formed at the beam-beam connecting part. Meanwhile, a gap is reserved between the short beam 2 and the flat beam 5, the width of the gap is at least larger than 0.1% of the length of the short beam 2, and the short beam 2 is prevented from being locally damaged due to the fact that the flat beam 5 collides with the short beam 2 under the action of an earthquake.
The open-hole plate type metal damper 17 is made of low-yield-point mild steel, and the yield strength of the open-hole plate type metal damper is lower than 235 MPa. And the middle part is provided with a diagonal slot hole 18 and a corner slot hole 19 so as to reduce the rigidity in the plane of the perforated plate type metal damper 17, prevent the perforated plate type metal damper 17 from being unstable in advance under the action of load in the plane, reduce the energy consumption effect of the perforated plate type metal damper, ensure that the perforated plate type metal damper 17 mainly generates plastic deformation in the plane of the perforated plate type metal damper when the floor slab moves horizontally, and further realize the function of dissipating the energy input into the main structure. The diagonal slot holes 18 and the corner slot holes 19 are both in a strip shape, the diagonal slot holes 18 and the edge lines of the perforated plate type metal damper 17 are arranged in parallel at an angle of 45 degrees, and the number of the diagonal slot holes 18 and the edge lines of the perforated plate type metal damper is 3-8. The corner slotted holes 19 are perpendicular to the diagonal slotted holes 18 and are positioned at two sides of the end parts of the diagonal slotted holes 18, 1 slot is arranged on each side, and the total area of the slotted holes accounts for 15-40% of the total area of the perforated plate type metal damper 17. The length of the perforated plate type metal damper 17 can be adjusted according to the length of the short beam 2, and the length of the side edge of the perforated plate type metal damper accounts for 30-90% of the total length of the short beam 2.
The edge of the groined integral floor slab 8 is placed on the lower flange of the flat beam 5 and is attached to the top of the lower flange of the flat beam 5, and the attachment width is at least 5% larger than the total width of the lower flange of the flat beam 5. The side length of the # -shaped integral floor slab 8 is 70% -90% of the total length of the flat beam 5; there is pre-buried fastener 9 of floor at 8 four corners positions of groined type integral floor slab, fastener 9 comprises pre-buried steel sheet and its upper cylinder, pre-buried steel sheet thickness should not be less than trompil plate formula metal damper 17 thickness, the cylinder diameter should be greater than trompil plate formula metal damper 17 thick, it is thick that highly should be greater than 2 times trompil plate formula damper 17, the range of cylinder on pre-buried steel sheet can arrange by oneself according to the engineering needs, fastener 9 chooses for use that material yield strength should reach 345Mpa at least, should be able to guarantee that plastic deformation can not appear in fastener 9 before trompil plate formula metal damper 17 takes place fatigue failure under the seismic action. The functions of the invention are as follows:
a multi-stage damping flat beam-floor system based on solid-web spiral spring pin connection is adopted in an assembled steel structure. The short beam, the flat beam, the connecting piece between the short beam and the flat beam, the solid-web spiral spring pin, the perforated plate type metal damper, the floor slab and the like in the structure can be prefabricated in a factory, and all the parts can be assembled on site during construction. The solid-web spiral spring pin is used for connecting the flat beam and the floor slab, the connecting mode is quick and convenient, and the solid-web spiral spring pin has the characteristics of certain shearing resistance and high ductility, so that the reliable connection between the flat beam and the floor slab and the effect of dissipating seismic energy through plastic deformation under the action of an earthquake can be realized. And introducing the perforated plate type damper and the weakened beam section to construct a plurality of shock absorption defense lines. And because flat beam system self characteristics can increase the clear height of building to the utmost extent, reduce the whole height of building, save construction cost. The floor system meets the design requirements of bearing capacity, deflection, comfort level and the like in a normal use state, has good energy consumption capacity under the action of an earthquake, and is easy to replace components after vibration or damage.
Compared with the prior floor system, the invention has the advantages that:
1. a multi-stage damping flat beam-floor system based on solid spiral spring pin connection is characterized in that components can be completely assembled on site in a factory, solid spiral spring pins are used for connecting a floor slab and a flat beam, the flat beam and a short beam are connected through bolt cover plates, wet operation is avoided, welding operation is simple, convenient and rapid to construct, and the engineering quality is stable and reliable.
2. The system constructs a weakening section at the beam part, and because the floor slab is flexibly connected with the flat beam, the floor slab has small constraint action and rigidity contribution to the flat beam, and can effectively control a structural plastic deformation area under the action of an earthquake at the weakening section, namely a beam-beam node and the flat beam. In addition, the short beam and the flat beam are connected through the full-bolt cover plate, and the metal perforated plate type damper is connected with the short beam and the floor slab in a buckling mode, so that the structural performance can be restored by replacing components after the earthquake.
3. Under the action of earthquake, the groined integral floor slab can slide relative to the flat beam, so that shearing plastic energy consumption is realized by shearing the solid-web spiral spring pin, and meanwhile, the perforated plate damper can realize in-plane plastic energy consumption under the action of floor slab extrusion or stretching. The beam-beam nodes and the flat beam can enter plastic to form plastic hinges under the condition of a large earthquake, not only can the plastic deformation consume energy, but also can play a role of a structural fuse, the system realizes a multi-stage damping strategy, and the overall safety of the structure is protected.
4. The energy consumption devices in the system occupy small space and are all positioned on the floor layer, the thickness of the floor layer is not increased, and the using space of the building and the attractiveness of the building are not influenced.
Drawings
Fig. 1 is a detail view of a multi-stage damping flat beam-floor structure based on solid spiral spring pin connection.
Fig. 2 is an overall schematic view of a multi-stage damping flat beam-floor structure based on solid spiral spring pin connection.
Fig. 3 is a schematic view of a solid helical spring pinned connection.
Fig. 4 is a schematic view of a connection joint of a flat beam and a short beam.
Fig. 5 is a schematic sectional view of a connection node of a flat beam and a short beam.
Fig. 6 is a schematic view of a short beam and a column.
Fig. 7 is a schematic view of a flat beam.
Fig. 8 is a schematic view of a groined integral floor.
Fig. 9 is a schematic view of the bottom of the groined integral floor.
FIG. 10 is a schematic view of a beam-to-beam nodal plate.
Fig. 11 is a connection diagram of the perforated plate type metal damper.
Figure 12 is a schematic view of two versions of a solid helical spring pin.
In the figure: 1-column; 2-short beam; 3-lower flange fasteners; 4-short beam bolt holes; 5-flat beam; 6-long round bolt hole; 7-lower flange connecting hole; 8-groined integral floor slab; 9-pre-embedding fasteners for the floor slab; 10-connecting holes at the bottom of the floor slab; 11-a bolt; 12-upper flange top cover plate; 13-upper flange bottom cover plate; 14-web cover plates; 15-bottom flange top cover plate; 16-lower flange bottom cover plate; 17-perforated plate metal damper; 18-diagonal slot; 19-corner slot holes; 20-solid helical spring pins; 21-filling layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.
As shown in the attached figures 1 and 2, the multi-stage damping flat beam-floor system based on solid spiral spring pin connection comprises: the steel plate concrete column is composed of a short beam 2, a column 1, a flat beam 5, a groined integral floor slab 8, a perforated plate type metal damper 17, a solid spiral spring pin 20, a filling layer 21 and a connecting piece for connecting the flat beam 5 and the short beam 2. The connecting piece for connecting the flat beam 5 and the short beam 2 consists of a bolt 11, an upper flange top cover plate 12, an upper flange bottom cover plate 13, a web cover plate 14, a lower flange top cover plate 15 and a lower flange bottom cover plate 16. As shown in the attached figure 6, the connecting node between the short beam 2 and the column 1 adopts rigid connection, the short beam 2 adopts I-shaped steel, and the lower flange of the short beam is provided with a fastener 3 buckled with the perforated plate type damper 17. As shown in the attached drawing 7, the width of the upper flange of the flat beam 5 is smaller than that of the lower flange, the lower flange is provided with prefabricated holes 7, long round bolt holes 6 are formed in the lower flange and the web plate at the end part of the flat beam 5, long round bolt holes 6 are formed in the upper flange, the long axis direction of the long round holes is consistent with the axial direction of the beam, the positions of the long round bolt holes 6 of the upper flange are axisymmetric with respect to the central axis of the web plate, the positions of the long round holes 6 of the lower flange are axisymmetric with respect to the central axis of the web plate, and the long round holes 6 of the web plate are distributed in rows. As shown in the attached drawings 4 and 5, the flat beam 5 is connected with the short beam 2 through the connecting piece, when the flat beam 5 is connected with the short beam 2 through the connecting piece, a certain gap is left between the short beam 2 and the flat beam 5, and the short beam 2 is prevented from generating plastic damage due to the fact that the flat beam 5 collides with the short beam 2 under the action of an earthquake. The length of the upper flange of the short beam 2 is larger than that of the upper flange of the flat beam 5, the thicknesses of the upper flange and the lower flange are the same, the height of the web plate of the short beam 2 is equal to that of the web plate of the flat beam 5, and the thicknesses of the web plate and the flat beam are the same. The width of the lower flange of the short beam 2 is larger than or equal to that of the lower flange of the flat beam 5, and the thicknesses of the two are equal. As shown in the attached drawings 8 and 9, the overall shape of the groined integral floor slab 8 of the system is the shape remained after a special-shaped hole is formed in the position of four vertex angles, the groined integral floor slab 8 is placed on the lower flange of the flat beam 5, the lower surface of the groined integral floor slab 8 is attached to the top of the lower flange of the flat beam 5, and the length of the side of the groined integral floor slab 8 is smaller than that of the flat beam 5. Fasteners 9 connected with the perforated plate type metal dampers 17 are embedded in the perforated positions at four corners of the groined integral floor slab 8. As shown in fig. 11, the system perforated plate type metal damper 17 is fastened with the fastening 3 on the lower flange of the flat beam 2 and the pre-embedded fastening 9 at the four corners of the groined integral floor slab 8 through the holes formed at the edges to realize the connection with the flat beam 5 and the groined integral floor slab 8. The perforated plate type metal damper 17 is provided with a special-shaped hole to reduce the in-plane rigidity of the perforated plate type metal damper 17, prevent instability damage and realize the function of yielding and energy consumption under the action of an earthquake. The solid helical spring pin shown in fig. 12 is formed by combining an inner core material with a helical spring pin, the inner core material being made of a metal material having high ductility characteristics such as lead, shape memory alloy, steel, etc. The spiral spring pin is formed by coiling a metal plate with dents or ribs, a certain gap exists between the spiral spring pin and an internal core material, and the metal material used by the spiral spring pin needs to have the characteristics of high ductility and difficult looseness. In order to prevent the helical spring pin from loosening, elastic materials can be filled between the rings of the helical spring pin or other loosening-preventing measures can be adopted. The spiral spring pin can be coated with adhesive to enhance the connection effect between the spiral spring pin and the connection hole. As shown in fig. 1, 7 and 9, the solid spiral spring pin 20 is inserted into the bottom hole 7 of the flat beam and the bottom hole 10 of the groined integral floor slab to realize connection therebetween.
The invention relates to a multi-channel anti-seismic defensive line flat beam-floor system based on a solid spiral spring pin connecting piece, which comprises the following construction methods: the method comprises the steps of firstly, rigidly connecting a column 1 with a short beam 2, then, connecting the short beam 2 with a flat beam 5 through a connecting piece, placing a prefabricated floor slab on the lower flange of the flat beam 5 after a frame built by the flat beam 5 and the column 1 of the short beam 2 is completed, then, splicing the floor slab to form a groined integral floor slab 8, if a prefabricated hole 10 on the lower surface of the floor slab corresponds to a hole 7 on the lower flange of the flat beam 5, adjusting the position of the floor slab to be superposed with a hole 7 on the lower flange of the flat beam 5, if no hole is formed in the bottom of the prefabricated floor slab, directly punching the prefabricated floor slab through the direction of the hole 7 on the lower flange of the flat beam 5 and vertical to the surface of the lower flange after adjusting the position of the floor slab, wherein the size of the hole is preferably similar to the size of the hole 7 on the lower flange of the flat beam 5. Solid spiral spring pins 20 are then inserted into the connecting holes 7 to connect the flat beams 5 to the groined integral floor slab 8. And finally, buckling the metal perforated plate type damper 17 on the fasteners 3 and 9 of the short beam 2 and the groined integral floor slab 8. The invention not only realizes the full assembly construction of the bearing part of the floor, but also can obviously accelerate the project progress. Meanwhile, the earthquake-resistant potential of a floor system is excavated, and the damage of an earthquake to the whole structure is reduced by arranging a plurality of earthquake-resistant defense lines. And the accurate control of the plastic area under the action of the earthquake is realized, and the structure function is conveniently recovered by replacing a small part of components after the earthquake.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a multistage shock attenuation flat beam-superstructure system based on solid web spiral spring pin junction which characterized in that: the short beam (2) is rigidly connected to the side part of the column (1), the flat beam (5) and the short beam (2) are connected by bolts and cover plates, the yield strength of the material used by the cover plates is lower than that of the short beam, and the sectional area of the end part is smaller than or equal to the I-shaped section of the short beam, so that a weakening node is formed; the cover plates comprise an upper flange top cover plate (12), an upper flange bottom cover plate (13), a web cover plate (14), a lower flange top cover plate (15) and a lower flange bottom cover plate (16); the flat beam (5) and the upper flange of the short beam (2) are connected by a bolt (11), an upper flange top cover plate (12) and an upper flange bottom cover plate (13); when the connection is carried out, an upper flange top cover plate (12) and an upper flange bottom cover plate (13) are respectively positioned at the top and the bottom of the upper flanges of the flat beam (5) and the short beam (2), bolts (11) are inserted to realize the connection after bolt holes of the cover plates are aligned with bolt holes of the upper flanges, and the upper flange bolt holes, namely the short beam bolt hole (4) and the long round bolt hole (6), are positioned at the hole positions of the upper flanges of the short beam (2) and the flat beam (5); the flat beam (5) and the web of the short beam (2) are connected through bolts (11) and web cover plates (14), the web cover plates (14) are located on two sides of the web of the flat beam (5) and the web of the short beam (2) during connection, the bolts (11) are inserted after aligning web bolt holes and web cover plate (14) bolt holes to realize connection, and the web bolt holes, namely the short beam bolt holes (4) and the long round bolt holes (6), are located at the hole positions of the web of the short beam (2) and the flat beam (5); the bolt (11) is utilized on the lower flange of the flat beam (5) and the short beam (2), the lower flange top cover plate (15) is connected with the lower flange bottom cover plate (16), the lower flange top cover plate (15) is located at the tops of the lower flanges of the flat beam (5) and the short beam (2) during connection, the lower flange bottom cover plate (16) is located at the bottoms of the lower flanges of the flat beam (5) and the short beam (2), lower flange bolt holes of the flat beam (5) and the short beam (2) are aligned, the bolt (11) is inserted into the bolt holes of the lower flange top cover plate (15) and the lower flange bottom cover plate (16) for connection, and the lower flange bolt holes, namely the short beam bolt holes (4) and the long beam bolt holes (6), are located at the hole sites of the lower flanges of the short beam (2) and the flat beam (5);
the perforated plate type metal damper (17) is buckled with a floor slab pre-embedded fastener (9) and a lower flange fastener (3) through an edge hole to realize connection with a floor slab (8) and a short beam (2), a filling layer (21) is laid above the perforated plate type metal damper, the filling layer (21) and the whole floor are located on the same horizontal plane, and the filling layer (21) comprises a waterproof layer and a sound insulation layer; a solid spiral spring pin (20) penetrates through the flat beam reserved hole (7) and is inserted into a floor slab bottom connecting hole (10); the solid spiral spring pin (20) is formed by combining a middle cylindrical core material and a spiral spring pin, and a certain gap is formed between the spiral spring pin and the middle cylindrical core material; the spiral spring pin is formed by coiling a metal plate with dents or ribs and the like, the surface of which is subjected to non-smooth treatment; coating an adhesive on the outer part of the spiral spring pin; the solid spiral spring pin (20) is provided with a cap-shaped clamping piece at one end, and the diameter of the clamping piece is larger than the diameter of the solid spiral spring pin and the diameter of the flat beam edge connecting hole.
2. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: the diameter of the solid spiral spring pin (20) is larger than that of the flat beam edge connecting hole (7) and the floor bottom connecting hole (10) in a non-compression state.
3. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: the short beam (2) is made of I-shaped steel, a lower flange fastener (3) is arranged at the top of a lower flange of the short beam, and a short beam bolt hole (4) is reserved at the end part of the short beam (2); the short beam bolt holes (4) are divided into upper flange bolt holes, lower flange bolt holes and web plate bolt holes; the upper flange bolt holes are two rows or four rows, the upper flange bolt holes in each row are all parallel to the beam axis direction of the short beam (2), the positions are axially symmetrical about the center line of the web plate, and 2-8 bolt holes in each row are adopted.
4. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: the width of the upper flange of the flat beam (5) is less than that of the lower flange; the lower flange long round bolt holes (6) can be arranged in 2 rows, 4 rows or 6 rows, the positions of the lower flange long round bolt holes are axisymmetrical about the middle axis of the web plate, and 2-8 bolt holes are arranged in each row; the web plate long circular bolt holes (6) are in 2 rows or 4 rows in total, and 2-4 bolt holes are arranged in each row.
5. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: when the flat beam (5) is connected with the short beam (2) through the connecting piece, the cover plate connecting piece is made of common hot rolled steel, low-yield-point high-ductility mild steel or shape memory alloy materials according to needs, the cover plate connecting piece is rectangular, and the total sectional area of the connecting piece is not larger than the sectional area of the I-shaped steel of the short beam (2), so that a weakened node is formed at the beam-beam connection part; a gap is reserved between the short beam (2) and the flat beam (5), the width of the gap is at least larger than 0.1% of the length of the short beam (2), and the short beam (2) is prevented from being locally damaged due to collision of the flat beam (5) and the short beam (2) under the action of an earthquake.
6. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: the perforated plate type metal damper (17) selects mild steel with low yield point as a self material; the diagonal slotted holes (18) and the corner slotted holes (19) are both in a strip shape, the diagonal slotted holes and the edge lines of the perforated plate type metal damper (17) form an angle of 45 degrees and are arranged in parallel, and the number of the diagonal slotted holes is 3-8; the corner slotted holes are perpendicular to the diagonal slotted holes (18) and are positioned on two sides of the end parts of the diagonal slotted holes (18), one is arranged on each side, and the total area of the slotted holes accounts for 15-40% of the total area of the perforated plate type metal damper (17); the length of the perforated plate type metal damper (17) is adjusted according to the length of the short beam (2), and the length of the side edge of the perforated plate type metal damper accounts for 30-90% of the total length of the short beam (2).
7. The multi-stage flat beam-floor system based on solid spiral spring pin connection of claim 1, wherein: the edge of the groined integral floor slab (8) is placed on the lower flange of the flat beam (5) and is attached to the top of the lower flange of the flat beam (5), and the attachment width is at least greater than 5% of the total width of the lower flange of the flat beam (5); the side length of the groined integral floor slab (8) is 70-90% of the total length of the flat beam (5); floor pre-embedded fasteners (9) are arranged at four corners of the groined integral floor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790037.4A CN112049500B (en) | 2020-08-07 | 2020-08-07 | Multistage damping flat beam-floor system based on solid spiral spring pin connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790037.4A CN112049500B (en) | 2020-08-07 | 2020-08-07 | Multistage damping flat beam-floor system based on solid spiral spring pin connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112049500A CN112049500A (en) | 2020-12-08 |
| CN112049500B true CN112049500B (en) | 2021-08-17 |
Family
ID=73601291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010790037.4A Active CN112049500B (en) | 2020-08-07 | 2020-08-07 | Multistage damping flat beam-floor system based on solid spiral spring pin connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112049500B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814276B (en) * | 2021-02-08 | 2023-03-24 | 江苏科技大学 | Steel-concrete composite beam with friction connection for limiting transfer of floor slab inertia force |
| CN113047496A (en) * | 2021-03-18 | 2021-06-29 | 中南建筑设计院股份有限公司 | Sliding damping floor slab |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866868A (en) * | 2014-02-21 | 2014-06-18 | 同济大学 | Beam post steel ring hinging section point |
| CN105256932A (en) * | 2015-11-02 | 2016-01-20 | 上海市机械施工集团有限公司 | Connection steel joint of precast concrete column and precast concrete floor |
| CN106638961A (en) * | 2017-01-10 | 2017-05-10 | 北京交通大学 | Assembly type steel frame connection node with post-seismic recoverable function |
| CN206562668U (en) * | 2017-03-02 | 2017-10-17 | 广州大学 | A kind of fabricated building structure |
| JP6216391B2 (en) * | 2012-12-06 | 2017-10-18 | インダストリー−アカデミック コーポレーション ファウンデイション, チョソン ユニバーシティーIndustry−Academic Cooperation Foundation, Chosun University | Seismic isolation swing slab support device and seismic isolation swing slab construction method using the same |
| CN108360725A (en) * | 2018-02-12 | 2018-08-03 | 北京工业大学 | A kind of Z-shaped connection steel reinforced concrete special-shape column-stealth beam floor assembly system |
-
2020
- 2020-08-07 CN CN202010790037.4A patent/CN112049500B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6216391B2 (en) * | 2012-12-06 | 2017-10-18 | インダストリー−アカデミック コーポレーション ファウンデイション, チョソン ユニバーシティーIndustry−Academic Cooperation Foundation, Chosun University | Seismic isolation swing slab support device and seismic isolation swing slab construction method using the same |
| CN103866868A (en) * | 2014-02-21 | 2014-06-18 | 同济大学 | Beam post steel ring hinging section point |
| CN105256932A (en) * | 2015-11-02 | 2016-01-20 | 上海市机械施工集团有限公司 | Connection steel joint of precast concrete column and precast concrete floor |
| CN106638961A (en) * | 2017-01-10 | 2017-05-10 | 北京交通大学 | Assembly type steel frame connection node with post-seismic recoverable function |
| CN206562668U (en) * | 2017-03-02 | 2017-10-17 | 广州大学 | A kind of fabricated building structure |
| CN108360725A (en) * | 2018-02-12 | 2018-08-03 | 北京工业大学 | A kind of Z-shaped connection steel reinforced concrete special-shape column-stealth beam floor assembly system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112049500A (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100595400C (en) | Coupled shearing force wall energy-dissipation beam-coupled steel plate damper and its using method | |
| CN112049500B (en) | Multistage damping flat beam-floor system based on solid spiral spring pin connection | |
| CN104563331B (en) | A kind of can the Self-resetting of load-bearing put more energy into corrugated steel damping wall | |
| CN107489212B (en) | Bearing-force-free shear-resistant buckling steel plate shear wall | |
| CN111733999B (en) | Built-in steel plate staggered through assembled X-shaped buckling-restrained brace | |
| US20080022610A1 (en) | Composite energy absorbing structure | |
| CN110700436B (en) | Energy-consuming type connecting node for hanging steel column and mounting method thereof | |
| CN105672519A (en) | Replaceable shearing type corrugated web energy dissipation connection beam | |
| CN105544790A (en) | Assembly type wallboard structure system | |
| CN105507451A (en) | Fabricated wallboard structure system | |
| CN104790563A (en) | Foam steel board shear wall structure | |
| CN101550727B (en) | Node of connection of column and beam | |
| CN201184000Y (en) | Damper for limb-connecting shear force wall girder-connecting energy consumption | |
| CN205502282U (en) | Removable shearing type corrugated web energy dissipation is roof beam even | |
| CN111764536A (en) | Composite corrugated steel plate shear wall | |
| CN110685484A (en) | Viscoelastic self-resetting support | |
| CN112761278B (en) | Slotting energy-consuming steel pipe shear wall with hybrid damper | |
| CN214941324U (en) | SMA-based self-resetting assembly type steel plate shear wall | |
| CN110409607B (en) | Design method of steel structure system connected by assembled column pestles | |
| KR100360377B1 (en) | Steel structure with damper joint | |
| JP5437009B2 (en) | Reinforcement structure of frame | |
| CN211523594U (en) | Energy-consuming type connecting node for hanging steel column | |
| CN112854541A (en) | Self-resetting assembly type steel plate shear wall based on SMA (shape memory alloy) and construction and installation method thereof | |
| JPH03199542A (en) | Diagonal bracing member for steel structure | |
| CN105672531A (en) | Assembled wall plate structure system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |