CN110735504B - Rotary stair node connecting device capable of dissipating energy and damping shock - Google Patents
Rotary stair node connecting device capable of dissipating energy and damping shock Download PDFInfo
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- CN110735504B CN110735504B CN201910987754.3A CN201910987754A CN110735504B CN 110735504 B CN110735504 B CN 110735504B CN 201910987754 A CN201910987754 A CN 201910987754A CN 110735504 B CN110735504 B CN 110735504B
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- 238000013016 damping Methods 0.000 title claims abstract description 64
- 230000035939 shock Effects 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 258
- 239000010959 steel Substances 0.000 claims abstract description 258
- 238000009413 insulation Methods 0.000 claims abstract description 42
- 239000010426 asphalt Substances 0.000 claims description 7
- 241000761557 Lamina Species 0.000 claims description 6
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 3
- 235000009120 camo Nutrition 0.000 claims description 3
- 235000005607 chanvre indien Nutrition 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 239000004567 concrete Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
-
- 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
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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
-
- 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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
- E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
- E04F2011/021—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass
- E04F2011/0212—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass mainly of concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Steps, Ramps, And Handrails (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the field of construction of assembled prefabricated stairways, and particularly discloses a rotary energy-dissipation and shock-absorption stair joint connecting device which comprises a prefabricated stair end and a prefabricated platform beam, wherein a damping shock insulation layer is arranged between the contact surface of the prefabricated stair end and the prefabricated platform beam, and the prefabricated stair end and the prefabricated platform beam are positioned at the upper end edge and the lower end edge of the contact surface and are respectively connected through a top rotary steel plate and a bottom rotary steel plate. The connecting device provided by the invention can provide certain rotation, vertical constraint and horizontal constraint, when the stair is vibrated, the damping anti-seismic layer provides certain deformation, the rotating steel plate can provide certain rotation amount, and the damping anti-seismic layer is matched with the rotating steel plate, so that the anti-seismic performance of the stair is effectively improved.
Description
Technical Field
The invention relates to the technical field of prefabricated staircase construction, in particular to a rotary energy-dissipating and shock-absorbing staircase joint connecting device.
Background
With the development of society, the fabricated concrete structure is widely applied at home and abroad due to the advantages of convenient construction, short construction period, less environmental pollution and the like. In prefabricated building construction, the safety and usability of the joint connection of the stairs as a vertical transportation channel are particularly important. Currently, cast-in-place connection is mostly used for connecting nodes of stairs in residential buildings, industrial buildings and public buildings. The construction process comprises the steps of formwork erecting, steel bar binding and concrete pouring on the construction site. Cast-in-place connection has a large amount of reinforcement and pours the operation, has reduced the efficiency of construction, influences construction progress and all ring edge borders.
In response to these problems, researchers have proposed improved methods, such as "stair connection node device (application number: CN 201010123164.5)", for connecting the reserved steel bars to the cast-in-place concrete layer through anchoring connection. Although the method has short construction period and low cost, a large number of supports are required, and the pouring of the vertical members is influenced. As for the connection node (application number: CN201520789621.2) of the assembled building laying stair, the end of the stair is connected and fixed with the floor platform by bolts, and gaps are sealed by injecting glue and pouring mortar. The method has small construction space and easy operation, avoids large-area wet operation, but the bolt connection belongs to rigid connection, and the earthquake resistance of the stairs is poor. As another example, a connection node device (application number: CN201820296567.1) for a precast concrete stair of a multi-story and high-rise steel house is mainly characterized in that a connection steel groove is placed in a fixed end mounting hole, and the steel groove and a platform steel beam are connected through welding. The method is simple to manufacture and convenient and fast to install, but the welded connection also belongs to rigid connection, and the problem of poor anti-seismic performance of the stairs still exists. As another example, the main idea of the novel energy-consuming and shock-absorbing stair connection node device (application number: CN201820205669.8) is to connect a platform beam with a bracket for a stair, connect and fix the stair through vertical joint bars, and arrange an SBS modified asphalt damping shock-isolation layer between the bracket and the bottom of the stair end, so as to achieve the shock-resistant effect of the stair. Although the method improves the earthquake resistance of the stairs and reduces energy consumption, the method has higher requirement on the shear strength of the vertical steel bars.
In conclusion, although a large amount of steel bar binding and concrete pouring operations are reduced in the four assembled stair node connections, the four assembled stair node connections have the following problems that the energy consumption and the shock absorption are poor; the construction is not simple enough; more exposed components and unattractive appearance.
Disclosure of Invention
The invention aims to provide a rotary energy-consuming and shock-absorbing stair joint connecting device to solve the problems of poor anti-seismic performance, complex construction, unattractive appearance and the like of the conventional stair joint connection.
In order to achieve the above purpose, the invention provides the following technical scheme: a rotary energy-consuming and shock-absorbing stair joint connecting device comprises a prefabricated stair end and a prefabricated platform beam, wherein an L-shaped notch is formed in one side of the prefabricated platform beam, and the bottom of the prefabricated stair end is matched with the L-shaped notch in shape and erected on the L-shaped notch of the prefabricated platform beam; a damping and shock-isolating layer is arranged between the contact surfaces of the prefabricated staircase ends and the prefabricated platform beams, the damping and shock-isolating layer comprises a horizontal damping and shock-isolating layer and a vertical damping and shock-isolating layer, the horizontal damping and shock-isolating layer is arranged on the horizontal plane of the L-shaped notch, and the vertical damping and shock-isolating layer is arranged on the vertical plane of the L-shaped notch; prefabricated staircase end and prefabricated platform roof beam are located both ends edge about the contact surface and rotate the steel sheet through the top respectively and rotate the steel sheet with the bottom and be connected, the top rotates the steel sheet and rotates the steel sheet with the bottom and include respectively can follow two pterygoid laminas of middle axis pivoted, two pterygoid laminas wherein one and prefabricated staircase fixed connection, another and prefabricated platform roof beam fixed connection.
In the structure, through set up horizontal damping shock insulation layer and vertical damping shock insulation layer between prefabricated stair end and prefabricated platform roof beam to connect prefabricated platform roof beam and prefabricated stair end through rotating the steel sheet, with this fixed prefabricated stair end and prefabricated platform roof beam, so can provide certain rotation, can provide vertical restraint and horizontal restraint again. When the stair receives vibrations, the damping antidetonation layer provides certain deformation, rotates the steel sheet and can provide certain rotation volume, and the steel sheet is rotated in the cooperation of damping antidetonation layer, has effectively improved the anti-seismic performance of stair.
The prefabricated staircase comprises a horizontal plane of a staircase bottom, a horizontal plane of a horizontal damping shock insulation layer, a horizontal plane of a horizontal damping shock insulation layer and a horizontal plane of a horizontal damping shock insulation layer, wherein the horizontal plane of the horizontal damping shock insulation layer is provided with a plurality of horizontal plane convex blocks of the; the upper surface and the lower surface of the horizontal damping shock insulation layer are respectively matched with the horizontal plane convex block at the bottom of the stair and the horizontal plane concave block of the platform beam. The arrangement of the horizontal plane convex block at the bottom of the stair end and the horizontal plane concave block of the platform beam can prevent the horizontal damping shock insulation layer from displacing in the horizontal direction.
Furthermore, the horizontal plane convex blocks at the bottom of the stair end are outwards convex cuboids, the number of the convex cuboids is fifteen, the convex cuboids are uniformly distributed at intervals in a grid shape, the horizontal plane convex blocks are arranged in rows parallel to the width direction of the prefabricated stair end, and the rows are arranged into six rows, wherein the number of the convex cuboids is two in the first row, the number of the convex cuboids is three in the second row, the number of the convex cuboids is two in the third row, the number of the convex cuboids is three; the platform beam horizontal plane concave blocks correspond to the stair end bottom horizontal plane convex blocks one by one.
Preferably, because the horizontal direction is the main stress surface when the staircase is used, the horizontal damping shock insulation layer is the SBS modified asphalt damping shock insulation layer with better shock resistance.
The prefabricated staircase comprises a prefabricated staircase body, a prefabricated staircase end, a prefabricated platform beam L-shaped notch, a prefabricated staircase end, a prefabricated staircase body and a prefabricated staircase body, wherein the prefabricated staircase end is provided with a plurality of staircase end vertical surface grooves along the width direction of the prefabricated staircase end; the left surface and the right surface of the vertical damping shock insulation layer are respectively matched with the vertical surface groove of the platform beam and the vertical surface groove of the stair end. The vertical surface grooves of the stair ends and the vertical surface grooves of the platform beam can prevent the vertical damping shock insulation layer from vertically displacing.
Furthermore, the number of the vertical face grooves of the stair ends and the number of the vertical face grooves of the platform beams are two, and the grooves correspond to each other one by one.
Preferably, the vertical damping shock insulation layer is formed by filling flexible fillers such as asphalt, hemp threads and the like.
The prefabricated stair is characterized in that a step face embedded steel plate is embedded in the edge, close to the prefabricated platform beam, of the step face of the prefabricated stair end, and a step section back embedded steel plate is embedded in the edge, close to the prefabricated platform beam, of the bottom of the prefabricated stair end; a beam top embedded steel plate is embedded in the edge of the top surface of the precast platform beam, which is close to the precast stair end, and a beam side embedded steel plate is embedded in the edge of the side surface of the precast platform beam, which is close to the precast stair end; two pterygoid laminas that the steel sheet was rotated at the top are respectively with the embedded steel sheet of tread and the embedded steel sheet fixed connection of roof beam top, two pterygoid laminas that the steel sheet was rotated at the bottom are respectively with the embedded steel sheet of bench back and the embedded steel sheet fixed connection of roof beam side.
Furthermore, a plurality of bolt holes are formed in the tread surface embedded steel plate, the ladder section back surface embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate, bolt holes corresponding to the bolt holes in the tread surface embedded steel plate and the beam top embedded steel plate are formed in two wing plates of the top rotating steel plate respectively, and the two wing plates of the top rotating steel plate are fixedly connected with the tread surface embedded steel plate and the beam top embedded steel plate through top steel plate bolts respectively; the bottom rotating steel plate is characterized in that bolt holes corresponding to the bolt holes in the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam are formed in the two wing plates of the bottom rotating steel plate, and the two wing plates of the bottom rotating steel plate are fixedly connected with the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam through bottom steel plate bolts.
Furthermore, the tread embedded steel plate, the bench back embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are all L-shaped inequilateral angle steels, and one shorter side of each angle steel is positioned on the inner side of the installation position of the angle steel; the top surface of the embedded steel plate of tread, the embedded steel plate of bench back, the embedded steel plate of roof beam top and the embedded steel plate of roof beam side all is less than its mounting plane's surface, the surface that the steel plate was rotated to the top and the bottom rotates the steel plate flushes with mounting plane.
Compared with the prior art, the invention has the advantages that:
1. the prefabricated staircase has the advantages that the rotating steel plate with the rotating shaft is mainly used for connecting the prefabricated platform beam with the node of the prefabricated staircase, so that the prefabricated staircase can provide restraint on two sides of the node and can slide in a small range, and the prefabricated staircase has the functions of energy dissipation and shock absorption.
2. The invention is provided with a vertical surface groove of a stair end, a horizontal plane convex block at the bottom of the stair end, a vertical surface groove of a platform beam and a horizontal plane concave block of the platform beam at the joint of a prefabricated platform beam and a prefabricated stair. Therefore, the friction between the prefabricated staircase and the damping shock insulation layer is increased, and the constraint force of the rotating steel plate is reduced.
3. The damping anti-seismic layer is matched with the rotating steel plate, so that the anti-seismic performance of the stair is better improved.
4. According to the invention, the rotating steel plate is connected with the embedded steel plate through the bolts, so that the construction is more convenient and rapid, and the construction efficiency is improved.
5. The top surface of the tread surface embedded steel plate is lower than the tread surface, the top surface of the ladder section back surface embedded steel plate is lower than the ladder section back surface, the top surface of the beam top embedded steel plate is lower than the top surface of the platform beam, and the top surface of the beam side embedded steel plate is concave on the outer side surface of the platform beam. When making pre-buried steel sheet and rotating the steel sheet be connected with this, the top surface of rotating the steel sheet flushes with platform beam top surface, stair end tread simultaneously. Meanwhile, when the top steel plate bolt is screwed down, the top surface of the top steel plate bolt is flush with the top surface of the top rotating steel plate; when the bottom steel plate bolt is screwed down, the top surface of the bottom steel plate bolt is flush with the top surface of the bottom rotating steel plate, so that the appearance is flat and attractive, and subsequent decoration is easy.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the prefabricated staircase ends according to the invention.
Fig. 3 is a schematic structural view of a precast deck beam according to the present invention.
Fig. 4 is a plane structure distribution diagram of the horizontal projection at the bottom of the staircase in the invention.
FIG. 5 is a plan view of the flat structure of the platform beam horizontal surface depression of the present invention.
FIG. 6 is a schematic view showing the structure of the tread surface embedded steel plate according to the present invention.
Fig. 7 is a schematic structural view of a steel plate embedded in the back of a bench in the invention.
Fig. 8 is a schematic structural view of the beam top embedded steel plate in the invention.
Fig. 9 is a schematic structural view of the girder side embedded steel plate according to the present invention.
FIG. 10 is a schematic sectional view of a top rotating steel plate according to the present invention.
Fig. 11 is a schematic top view of the top rotating steel plate of the present invention.
Fig. 12 is a front view schematically illustrating the structure of the bottom rotating steel plate in the present invention.
FIG. 13 is a schematic view of the structure of the damping vibration-isolating layer according to the present invention.
In the figure: 1, prefabricating a stair end, 11 tread embedded steel plates, 12 stair end vertical surface grooves, 13 stair end bottom horizontal surface lugs, 14 stair section back embedded steel plates, 15 tread embedded steel plate bolt holes and 16 stair section back embedded steel plate bolt holes; 2, prefabricating a platform beam, 21 beam top embedded steel plates, 22 platform beam vertical surface grooves, 23 platform beam horizontal surface concave blocks, 24 beam side embedded steel plates, 25 beam top embedded steel plate bolt holes and 26 beam side embedded steel plate bolt holes; 3, rotating a steel plate at the top, connecting a platform beam wing plate 31, connecting a stair end wing plate 32, connecting a top steel plate rotating shaft 33, connecting a steel sleeve on the top steel plate 34, a steel sleeve in the top steel plate 35, a steel sleeve in the top steel plate 36, a steel sleeve in the bottom steel plate 37, connecting a platform beam wing plate bolt hole 38, connecting a stair end wing plate bolt hole 39 and a top steel plate bolt; 4, rotating a steel plate at the bottom, fixing a platform beam wing plate 41, fixing a stair end wing plate 42, fixing a stair end wing plate 43, rotating a steel plate shaft 43, fixing a platform beam wing plate bolt hole 47, fixing a stair end wing plate bolt hole 48 and fixing a bottom steel plate bolt, wherein the steel plate at the bottom is provided with an upper steel sleeve 44, a middle steel sleeve 45 and a lower steel sleeve 46; 5 damping shock insulation layers, 51 horizontal damping shock insulation layers and 52 vertical damping shock insulation layers.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of embodiments in combination with the accompanying drawings.
With reference to fig. 1-13, the invention relates to a rotary energy-consuming and shock-absorbing stair joint connecting device, which comprises a prefabricated stair end 1, a prefabricated platform beam 2, a top rotary steel plate 3, a bottom rotary steel plate 4 and a damping shock-isolation layer 5; an L-shaped gap is formed in one side of the prefabricated platform beam 2, and the shape of the bottom of the prefabricated stair end 1 is matched with the L-shaped gap and is erected on the L-shaped gap of the prefabricated platform beam 2; be equipped with damping shock insulation layer 5 between the contact surface of prefabricated stair end 1 and prefabricated platform roof beam 2, damping shock insulation layer 5 includes horizontal damping shock insulation layer 51 and vertical damping shock insulation layer 52, and horizontal damping shock insulation layer 51 sets up on the horizontal plane of L shape breach, and vertical damping shock insulation layer 52 sets up on the vertical face of L shape breach.
Be equipped with stair end bottom horizontal plane lug 13 on the bottom horizontal plane of prefabricated stair end 1 and the contact of horizontal damping shock insulation layer 51, be equipped with stair end vertical plane recess 12 along the width direction of prefabricated stair end 1 on the vertical plane of prefabricated stair end 1 and the contact of vertical damping shock insulation layer 52, the edge that the tread of prefabricated stair end 1 is close to prefabricated platform roof beam 2 inlays and is equipped with the embedded steel sheet of tread 11, the edge that the bottom of prefabricated stair end 1 is close to prefabricated platform roof beam 2 inlays and is equipped with the embedded steel sheet of bench back 14.
The horizontal plane lug 13 of stair end bottom is the cuboid of evagination, and its quantity is fifteen, is latticed interval evenly distributed to be on a parallel with prefabricated stair end 1 width direction and be the row, set up to six altogether, wherein first row two, the second is listed as three, the third is listed as two, the fourth is listed as three, the fifth is listed as two, the sixth is listed as three.
The vertical face grooves 12 of the stair ends are cuboid grooves which are as long as the width of the prefabricated stair ends 1, and the number of the grooves is two.
The embedded steel plate 11 of the tread is L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the embedded steel plate is lower than the tread. Six tread surface embedded steel plate bolt holes 15 are arranged on the tread surface embedded steel plate 11 in a penetrating mode, the tread surface embedded steel plate bolt holes 15 are circular holes with the diameter of 5mm, and internal threads are arranged on the inner surface of the tread surface embedded steel plate bolt holes.
The embedded steel plate 14 on the back of the bench is L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the angle steel is lower than the back of the bench. Run through on the embedded steel sheet 14 in bench back and be equipped with six pre-buried steel sheet bolt holes in bench back 16, pre-buried steel sheet bolt hole in bench back 16 is diameter 5 mm's circular hole, and its inner surface is equipped with the internal thread.
The horizontal plane of the L-shaped notch of the prefabricated platform beam is provided with a platform beam horizontal plane concave block, the vertical plane of the L-shaped notch of the prefabricated platform beam is provided with a platform beam vertical plane groove along the width direction of the platform beam, the edge of the top surface of the prefabricated platform beam, which is close to the end of the prefabricated staircase, is embedded with a beam top embedded steel plate, and the edge of the side surface of the prefabricated platform beam, which is close to the end of the prefabricated staircase, is embedded with a beam side embedded steel plate.
The platform beam horizontal plane concave blocks correspond to the stair end bottom horizontal plane convex blocks one by one, the number of the platform beam horizontal plane concave blocks is fifteen, the platform beam horizontal plane concave blocks and the stair end bottom horizontal plane convex blocks are uniformly distributed in a grid shape at intervals, the platform beam horizontal plane concave blocks are arranged in rows parallel to the width direction of the prefabricated platform beam 2, six rows are arranged, the first row is two, the second row is three, the third row is two, the fourth row is three, the fifth row is two, and the sixth row is three.
The platform beam vertical surface grooves 22 are cuboid grooves which are as long as the width of the prefabricated platform beam 2, and the positions of the two grooves correspond to the stair end vertical surface grooves 12.
The beam top embedded steel plate 21 is an L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the top surface of the L-shaped inequilateral angle steel is lower than that of the platform beam. Six beam top embedded steel plate bolt holes 25 are arranged on the beam top embedded steel plate 21 in a penetrating mode, the beam top embedded steel plate bolt holes 25 are circular holes with the diameter of 5mm, and internal threads are arranged on the inner surface of the beam top embedded steel plate.
The beam side embedded steel plate 24 is an L-shaped inequilateral angle steel with a short side of 40mm, a long side of 100mm and a thickness of 20mm, and the side surface of the L-shaped inequilateral angle steel is lower than the outer side surface of the platform beam. Six beam side embedded steel plate bolt holes 26 are formed in the beam side embedded steel plate 24 in a penetrating mode, the beam side embedded steel plate bolt holes 26 are circular holes with the diameter of 5mm, and internal threads are formed in the inner surface of the beam side embedded steel plate bolt holes.
The tread embedded steel plate 11 and the beam top embedded steel plate 21 are connected through the top rotating steel plate 3.
The top rotating steel plate 3 is composed of a connecting platform beam wing plate 31, a connecting stair end wing plate 32, a top steel plate rotating shaft 33, a top steel plate upper-linking steel sleeve 34, a top steel plate middle-linking steel sleeve 35, a top steel plate lower-linking steel sleeve 36, a connecting platform beam wing plate bolt hole 37, a connecting stair end wing plate bolt hole 38 and a top steel plate bolt 39. The connecting platform beam flanges 31 and connecting stair end flanges 32 are rotatable about a top steel plate pivot 33.
The connecting platform beam wing plate 31 and the connecting stair end wing plate 32 are cuboids with the length of 80mm, the width of 50mm and the thickness of 20 mm.
The top steel plate rotating shaft 33 is a cylindrical rotating shaft with the diameter of 30mm and the length of 50 mm.
The steel sleeve 34 of the top steel plate is a hollow cylinder, is sleeved on one third of the upper part of the top steel plate rotating shaft 33 and is fixedly connected with the connecting platform beam wing plate 31, so that the connecting platform beam wing plate 31 can rotate around the top steel plate rotating shaft 33.
The steel linking sleeve 35 in the top steel plate is a hollow cylinder, is sleeved at one third of the middle part of the top steel plate rotating shaft 33 and is fixedly connected with the connecting stair end wing plate 32, so that the connecting stair end wing plate 32 can rotate around the top steel plate rotating shaft 33.
The top steel plate lower connecting steel sleeve 36 is a hollow cylinder, is sleeved at one third of the lower part of the top steel plate rotating shaft 33 and is fixedly connected to the connecting platform beam wing plate 31, so that the connecting platform beam wing plate 31 can rotate around the top steel plate rotating shaft 33.
The connecting platform beam wing plate bolt holes 37 are circular holes with the diameter of 5mm, and 6 holes in total penetrate through the plate thickness of the connecting platform beam wing plate 31 and are provided with internal threads. The bolt holes of the steel plate correspond to the bolt holes 25 of the embedded steel plate on the beam top.
The bolt holes 38 for connecting the stair end wing plates are circular holes with the diameter of 5mm, and 6 holes are formed in the thickness of the plate for penetrating and connecting the stair end wing plates 32 and are provided with internal threads. The bolt holes of the pedal are respectively corresponding to the bolt holes 15 of the embedded steel plate of the tread.
The top steel plate bolt 39 is a cylinder with a diameter of 5mm and a height of 40mm, and is provided with an external thread. The external threads are matched with the internal threads in the tread embedded steel plate bolt hole 15, the beam top embedded steel plate bolt hole 25, the connecting platform beam wing plate bolt hole 37 and the connecting stair end wing plate bolt hole 38. When the top steel plate bolts 39 are tightened in the bolt holes, the top surfaces of the top steel plate bolts 39 are flush with the top surface of the top rotating steel plate 3.
The embedded steel plate 14 on the back of the bench and the embedded steel plate 24 on the side of the beam are connected through the bottom rotating steel plate 4.
The bottom rotating steel plate 4 is composed of a fixed platform beam wing plate 41, a fixed stair end wing plate 42, a bottom steel plate rotating shaft 43, a bottom steel plate upper-linking steel sleeve 44, a bottom steel plate middle-linking steel sleeve 45, a bottom steel plate lower-linking steel sleeve 46, a fixed platform beam wing plate bolt hole 47, a fixed stair end wing plate bolt hole 48 and a bottom steel plate bolt 49. The fixed platform beam flanges 41 and fixed stair end flanges 42 are rotatable about a bottom steel pivot 43.
The fixed platform beam wing plate 41 and the fixed stair end wing plate 42 are both cuboids with the length of 80mm, the width of 50mm and the thickness of 20 mm.
The rotating shaft 43 of the bottom steel plate is a cylindrical rotating shaft with the diameter of 30mm and the length of 50 mm.
The steel sleeve 44 of the bottom steel plate is a hollow cylinder, is sleeved on one third of the upper part of the rotating shaft 43 of the bottom steel plate and is fixedly connected with the wing plate 41 of the fixed platform beam, so that the wing plate 41 of the fixed platform beam can rotate around the rotating shaft 43 of the bottom steel plate.
The steel sleeve 45 in the bottom steel plate is a hollow cylinder, is sleeved at one third of the middle part of the rotating shaft 43 of the bottom steel plate and is fixedly connected with the wing plate 42 at the end of the fixed stair, so that the wing plate 42 at the end of the fixed stair can rotate around the rotating shaft 43 of the bottom steel plate.
The bottom steel plate lower armature steel sleeve 46 is a hollow cylinder, is sleeved at one third of the lower part of the bottom steel plate rotating shaft 43 and is fixedly connected to the fixed platform beam wing plate 41, so that the fixed platform beam wing plate 41 can rotate around the bottom steel plate rotating shaft 43.
The fixed platform beam wing plate bolt holes 47 are circular holes with the diameter of 5mm, 6 holes penetrate through the plate thickness of the fixed platform beam wing plate 41, and internal threads are arranged. The bolt holes of which correspond to the beam-side embedded steel plate bolt holes 26, respectively.
The bolt holes 48 for fixing the stair end wing plates are circular holes with the diameter of 5mm, and 6 holes in total penetrate through the plate thickness of the fixed stair end wing plates 42 and are provided with internal threads. The bolt holes of the steel plate correspond to the embedded steel plate bolt holes 16 on the back of the bench.
The bottom steel plate bolt 49 is a cylinder with a diameter of 5mm and a height of 40mm and is provided with an external thread. The external threads are matched with the internal threads in the bench back embedded steel plate bolt holes 16, the beam side embedded steel plate bolt holes 26, the fixed platform beam wing plate bolt holes 47 and the fixed stair end wing plate bolt holes 48. When the bottom plate bolts 49 are tightened in the bolt holes, the top surfaces of the bottom plate bolts 49 are flush with the top surface of the bottom rotating plate 4.
The horizontal damping shock insulation layer 51 is an SBS modified asphalt damping shock insulation layer, the thickness of the horizontal damping shock insulation layer is 30mm, the size of the horizontal damping shock insulation layer is matched with the horizontal plane of the L-shaped gap of the prefabricated platform beam 2, and the upper surface and the lower surface of the horizontal damping shock insulation layer 51 are respectively matched with the horizontal plane convex block 13 at the bottom of the stair end and the horizontal plane concave block 23 of the platform beam.
The vertical damping shock insulation layer 52 is formed by filling flexible fillers such as asphalt and hemp and the like, the thickness of the vertical damping shock insulation layer is 30mm, the size of the vertical damping shock insulation layer is matched with the vertical surface of the L-shaped notch of the prefabricated platform beam 2, and the left surface and the right surface of the vertical damping shock insulation layer 52 are respectively matched with the platform beam vertical surface groove 22 and the stair end vertical surface groove 12.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a but energy consumption absorbing stair node connecting device of rotation type which characterized in that: the prefabricated staircase comprises a prefabricated staircase end and a prefabricated platform beam, wherein an L-shaped notch is formed in one side of the prefabricated platform beam, and the shape of the bottom of the prefabricated staircase end is matched with the L-shaped notch and is erected on the L-shaped notch of the prefabricated platform beam;
a damping and shock-isolating layer is arranged between the contact surfaces of the prefabricated staircase ends and the prefabricated platform beams, the damping and shock-isolating layer comprises a horizontal damping and shock-isolating layer and a vertical damping and shock-isolating layer, the horizontal damping and shock-isolating layer is arranged on the horizontal plane of the L-shaped notch, and the vertical damping and shock-isolating layer is arranged on the vertical plane of the L-shaped notch;
the prefabricated staircase end and the prefabricated platform beam are positioned at the upper and lower edges of the contact surface and are respectively connected through a top rotating steel plate and a bottom rotating steel plate, the top rotating steel plate and the bottom rotating steel plate respectively comprise two wing plates capable of rotating along the middle axis, one of the two wing plates is fixedly connected with the prefabricated staircase end, and the other wing plate is fixedly connected with the prefabricated platform beam;
a plurality of stair end bottom horizontal surface convex blocks are arranged on the horizontal surface of the bottom of the prefabricated stair end, which is in contact with the horizontal damping shock insulation layer, a plurality of platform beam horizontal surface concave blocks are arranged on the horizontal surface of the L-shaped notch of the prefabricated platform beam, and the stair end bottom horizontal surface convex blocks and the platform beam horizontal surface concave blocks are in one-to-one correspondence with each other; the upper surface and the lower surface of the horizontal damping shock insulation layer are respectively matched with the horizontal plane convex block at the bottom of the stair and the horizontal plane concave block of the platform beam.
2. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 1, wherein: the horizontal plane convex blocks at the bottom of the stair end are outwards convex cuboids, the number of the convex cuboids is fifteen, the convex cuboids are uniformly distributed at intervals in a grid shape, the horizontal plane convex blocks are arranged in rows parallel to the width direction of the prefabricated stair end, and the rows are six, wherein the number of the convex cuboids is two in a first row, the number of the convex cuboids is three in a second row, the number of the convex cuboids is two in a third row, the number of the convex cuboids is three in; the platform beam horizontal plane concave blocks correspond to the stair end bottom horizontal plane convex blocks in a staggered mode.
3. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 1 or 2, wherein: the horizontal damping and shock insulation layer is an SBS modified asphalt damping and shock insulation layer.
4. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 1, wherein: a plurality of vertical surface grooves of the stair end are formed in the vertical surface, in contact with the vertical damping shock insulation layer, of the prefabricated stair end along the width direction of the prefabricated stair end, and a plurality of vertical surface grooves of the platform beam are formed in the vertical surface of the L-shaped notch of the prefabricated platform beam along the width direction of the platform beam; the left surface and the right surface of the vertical damping shock insulation layer are respectively matched with the vertical surface groove of the platform beam and the vertical surface groove of the stair end.
5. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 4, wherein: the number of the vertical face grooves of the stair ends and the number of the vertical face grooves of the platform beams are two, and the grooves correspond to each other one by one.
6. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 4 or 5, wherein: the vertical damping shock insulation layer is formed by filling asphalt and hemp flexible filler.
7. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 1, wherein: a step surface embedded steel plate is embedded in the edge, close to the precast platform beam, of the step surface of the precast stair end, and a step section back embedded steel plate is embedded in the edge, close to the precast platform beam, of the bottom of the precast stair end; a beam top embedded steel plate is embedded in the edge of the top surface of the precast platform beam, which is close to the precast stair end, and a beam side embedded steel plate is embedded in the edge of the side surface of the precast platform beam, which is close to the precast stair end; two pterygoid laminas that the steel sheet was rotated at the top are respectively with the embedded steel sheet of tread and the embedded steel sheet fixed connection of roof beam top, two pterygoid laminas that the steel sheet was rotated at the bottom are respectively with the embedded steel sheet of bench back and the embedded steel sheet fixed connection of roof beam side.
8. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 7, wherein: the step surface embedded steel plate, the ladder section back surface embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are respectively provided with a plurality of bolt holes, the two wing plates of the top rotating steel plate are respectively provided with bolt holes corresponding to the bolt holes on the step surface embedded steel plate and the beam top embedded steel plate, and the two wing plates of the top rotating steel plate are respectively fixedly connected with the step surface embedded steel plate and the beam top embedded steel plate through top steel plate bolts; the bottom rotating steel plate is characterized in that bolt holes corresponding to the bolt holes in the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam are formed in the two wing plates of the bottom rotating steel plate, and the two wing plates of the bottom rotating steel plate are fixedly connected with the embedded steel plate on the back side of the ladder section and the embedded steel plate on the side of the beam through bottom steel plate bolts.
9. A rotary energy-dissipating and shock-absorbing stair joint connecting device as claimed in claim 7, wherein: the step surface embedded steel plate, the ladder section back surface embedded steel plate, the beam top embedded steel plate and the beam side embedded steel plate are all L-shaped inequilateral angle steels, and one shorter side of each angle steel is positioned on the inner side of the installation position of the angle steel; the top surface of the embedded steel plate of tread, the embedded steel plate of bench back, the embedded steel plate of roof beam top and the embedded steel plate of roof beam side all is less than its mounting plane's surface, the surface that the steel plate was rotated to the top and the bottom rotates the steel plate flushes with mounting plane.
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| CN201910987754.3A CN110735504B (en) | 2019-10-17 | 2019-10-17 | Rotary stair node connecting device capable of dissipating energy and damping shock |
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| CN201910987754.3A CN110735504B (en) | 2019-10-17 | 2019-10-17 | Rotary stair node connecting device capable of dissipating energy and damping shock |
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| CN112982850B (en) * | 2021-02-05 | 2022-03-22 | 绍兴文理学院 | Telescopic assembled stair node antidetonation connecting device |
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