CN109267654B - Combined prefabricated arch bottom plate and superposed arch plate - Google Patents
Combined prefabricated arch bottom plate and superposed arch plate Download PDFInfo
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- CN109267654B CN109267654B CN201811126192.5A CN201811126192A CN109267654B CN 109267654 B CN109267654 B CN 109267654B CN 201811126192 A CN201811126192 A CN 201811126192A CN 109267654 B CN109267654 B CN 109267654B
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- 239000004567 concrete Substances 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000002861 polymer material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005452 bending Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B1/3211—Structures with a vertical rotation axis or the like, e.g. semi-spherical structures
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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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a combined prefabricated arch bottom plate and a combined arch plate, relates to the field of building structures, and solves the problems that the existing arch plate is cast in place, a template needs to be erected, construction is complicated, difficulty is high, and manufacturing cost is high. The technical scheme adopted by the invention is as follows: the combined prefabricated arched bottom plate comprises a prefabricated arched bottom plate and a supporting piece, wherein a connecting piece is embedded in the prefabricated arched bottom plate, the upper end of the connecting piece penetrates out of the outer side surface of the prefabricated arched bottom plate, the supporting piece is located on the inner side or the outer side of the prefabricated arched bottom plate, and the supporting piece is detachably connected to the upper end or the lower end of the connecting piece. And pouring a concrete superposed layer after pouring the outer side surface of the prefabricated arched bottom plate to form a superposed arched plate. The invention can realize the mould-free construction, reduce the work amount, reduce the difficulty, shorten the construction period, save the cost and also help to ensure the quality of the work, especially the appearance quality. The prefabricated arched bottom plate can be made thinner, and the bending resistance of the prefabricated arched bottom plate in the construction stage can be adjusted, so that the types are reduced, and the development of the fabricated building is promoted.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a combined prefabricated arched bottom plate and a superposed arched plate of an assembly building.
Background
The existing arch-shaped plate is cast in place, and a template needs to be erected in advance. The coincide arched plate often is located the top of building, and the position is higher, is the arc moreover, and cast in situ needs set up a large amount of support frames, has the shortcoming that the construction is loaded down with trivial details, the degree of difficulty is big, the cost is high. Moreover, as the templates are formed by splicing, the arched plates at the splicing positions are not flat and need to be processed at a later stage; in addition, the templates are easy to deform, and the templates are easy to deform integrally after being spliced, so that the shape of the arch plate is deformed, and particularly the inner side shape of the arch plate is not standard.
Disclosure of Invention
The invention firstly provides a combined prefabricated arch bottom plate, and solves the problems that the existing arch plate needs to be built with a template in a cast-in-place manner, the construction is complicated, the difficulty is high, and the manufacturing cost is high.
The technical scheme adopted by the invention for solving the technical problems is as follows: the combined prefabricated arched bottom plate comprises a prefabricated arched bottom plate and a supporting piece, wherein a connecting piece is embedded in the prefabricated arched bottom plate, the upper end of the connecting piece penetrates out of the outer side surface of the prefabricated arched bottom plate, the supporting piece is located on the inner side or the outer side of the prefabricated arched bottom plate, and the supporting piece is detachably connected to the upper end or the lower end of the connecting piece.
The upper end of the connecting piece is one end located on the outer side of the prefabricated arched bottom plate, and the lower end of the connecting piece is one end located on the inner side of the prefabricated arched bottom plate.
Further, the method comprises the following steps: the connecting piece is sleeve, connecting rod or sleeve pipe, wherein: the sleeve is embedded in the prefabricated arched bottom plate, a thread inlet is formed in any one end of the sleeve, and the supporting piece is connected to the thread inlet of the sleeve through a bolt; the upper end of the connecting rod penetrates out of the outer side face of the prefabricated arched bottom plate, the lower end of the connecting rod penetrates out of the inner side face of the prefabricated arched bottom plate, a pin hole is formed in the lower section of the connecting rod, a pin penetrates through the pin hole, and the supporting piece is connected to the lower end of the connecting rod through the pin; the screw rod is arranged in the sleeve in a penetrating mode, any one end of the upper end and the lower end of the screw rod is connected with the supporting piece through the nut, and the other end of the screw rod is fixed through the nut.
Further, the method comprises the following steps: the lower end of the sleeve does not penetrate through the inner side surface of the prefabricated arched bottom plate; the lower end of the sleeve does not extend beyond the inner side surface of the prefabricated arched bottom plate, and a gasket is arranged between the end part of the sleeve and the support.
The connecting piece is used for being connected between prefabricated arch bottom plate and the support piece to receive great power, because prefabricated arch bottom plate is thinner, for the connection steadiness that improves connecting piece and prefabricated arch bottom plate, avoid the connecting piece atress to slippage from prefabricated arch bottom plate, in order to guarantee safety, further is: and the outer side of the connecting piece is provided with an anti-slip structure matched with the prefabricated arched bottom plate. For example, the anti-slip structure is: the outer side of the connecting piece is provided with a ring shape protruding out of the connecting piece; or, the anti-slip structure is as follows: the outer side of the connecting piece is in a wave shape or a round table shape, and one end with smaller cross section area of the round table is close to the supporting piece.
Specifically, the supporting piece is a section steel, an alloy section bar, a concrete member or a high polymer material member.
Further, the method comprises the following steps: the connecting piece is a sleeve, the lower end of the sleeve is provided with a thread inlet, the supporting piece is connected to the inner side of the prefabricated arched bottom plate, and the part of the sleeve penetrating out of the outer side surface of the prefabricated arched bottom plate forms a shear-resistant stud; the supporting member is an arched rod or an arched beam. Preferably, a first fixing ring protruding out of the sleeve barrel is arranged around the sleeve, and the first fixing ring is located on the outer side face of the prefabricated arched bottom plate.
Or the connecting piece is a sleeve, the upper end of the sleeve is provided with a thread inlet, the upper end of the sleeve penetrates out of the outer side face of the prefabricated arched bottom plate, and the supporting piece is connected to the upper side of the prefabricated arched bottom plate. Preferably, a second fixing ring protruding out of the sleeve barrel is arranged around the sleeve, and the second fixing ring is embedded in the inner surface of the prefabricated arched bottom plate.
Specifically, the supporting pieces are arch bars or arch beams, at least two supporting pieces are parallel to each other, and the distance between every two adjacent supporting pieces is 100-3000 mm; the same supporting piece is connected with the prefabricated arched bottom plate through at least two connecting pieces, and the arc distance between every two adjacent connecting pieces on the same supporting piece is 50-2000 mm; the prefabricated arched bottom plate is a reinforced concrete plate or a prestressed reinforced concrete plate with the thickness of 30-300 mm.
The combined prefabricated arched bottom plate has the beneficial effects that: first, bury the connecting piece underground in the prefabricated arch bottom plate of combination prefabricated arch bottom plate, the connecting piece is through dismantling connected mode connection support piece, and the lateral surface of prefabricated arch bottom plate is direct as the template of pouring of post-cast concrete superimposed sheet, has realized exempting from the mould construction, has reduced the engineering volume, has reduced the degree of difficulty, has shortened the time limit for a project, has practiced thrift the cost, and prefabricated arch bottom plate is the prefab moreover, helps guaranteeing the engineering quality, especially the appearance quality of internal surface. Secondly, the connecting pieces are connected with the supporting pieces in a detachable connection mode, and the bending resistance, the shearing resistance and the cracking resistance of the molded prefabricated arched bottom plate can be flexibly adjusted by adjusting at least one of the strength, the rigidity, the materials, the quantity and the spacing of the supporting pieces or the connecting pieces, for example, the strength, the rigidity, the materials, the quantity and the spacing of the supporting pieces, so that the prefabricated arched bottom plate can meet the use requirements of various spans even if the prefabricated arched bottom plate is thin. Thirdly, the support piece improves the bending resistance bearing capacity, the shearing resistance bearing capacity and the crack resistance of the prefabricated arched bottom plate, the applicable span range of the combined prefabricated arched bottom plate is enlarged, the types of the prefabricated arched bottom plates under the action of different spans and different loads are greatly reduced, namely the types of the prefabricated arched bottom plates with different plate thicknesses or different reinforcing bars are reduced, the prefabricated production, transportation, hoisting and installation difficulty of the prefabricated arched bottom plate is simplified, the manufacturing cost of the superposed floor can be controlled well, and the construction period can be saved. Fourth, the prefabricated arched deck can be made thinner while satisfying the bending resistance, shear resistance and crack resistance, for example, the prefabricated arched deck can be as thin as 30 mm. The prefabricated arched bottom plate is not obviously thickened due to the increase of the span of the floor slab or the increase of the load, so that the quality of the prefabricated arched bottom plate is obviously increased, the problem of light weight of the laminated arched plate is solved, and the problem of overweight lifting is avoided by controlling the dead weight of the combined prefabricated arched bottom plate.
The connecting piece between support piece and the prefabricated arch bottom plate is sleeve, connecting rod or sleeve pipe, acquires easily, and the cost is low. The connecting mode between the supporting piece and the connecting piece is simple, the precision requirement is low, and the construction is convenient. The supporting member is an arched rod or an arched beam, such as a section steel, which can be a section steel with a groove shape, a C shape, a rectangular shape, an L shape or an I shape. Shaped steel supports intensity greatly, acquires easily, pours concrete superposed layer construction shaping after the prefabricated arch bottom plate lateral surface of combination and reaches the bearing capacity requirement after, can demolish the recovery, realizes reuse, green.
The invention also provides a superposed arch plate, which comprises any one of the combined prefabricated arch bottom plates, a post-cast concrete superposed layer of reinforcement is poured on the outer side surface of the prefabricated arch bottom plate, and the upper end of the connecting piece is embedded in the post-cast concrete superposed layer.
Further, the method comprises the following steps: the lateral surface of pouring the concrete superimposed sheet after the upper end of connecting piece is not worn out, and the thickness of pouring the concrete superimposed sheet after is 60 ~ 300mm, and the gross thickness of pouring the concrete superimposed sheet after and the prefabricated arch bottom plate of combination is 90 ~ 600 mm.
The laminated arched plate has the beneficial effects that: the connecting piece upper end of prefabricated arch bottom plate lateral surface is buried underground in the post-cast concrete coincide layer, realizes the connection of shearing between new and old concrete, realizes the connection of shearing between prefabricated arch bottom plate and the post-cast concrete superimposed sheet promptly, guarantees the wholeness between post-cast concrete superimposed sheet and the prefabricated arch bottom plate, forms firm structure. The superposed arched plate has great social benefit and economic value, and plays a great positive role in promoting the development of the fabricated building.
Drawings
FIG. 1 is a schematic view of an embodiment of the laminated arch panel of the present invention.
Fig. 2 is an enlarged view of the dome of fig. 1.
Fig. 3 is a cross-sectional view of the laminated arch panel of fig. 1 in the direction of the vault.
Fig. 4 is a partial schematic view of a cross-section of one embodiment of the composite prefabricated arch base of the present invention taken along the direction of the arch.
Fig. 5 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch direction.
Fig. 6 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch direction.
Fig. 7 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch direction.
Fig. 8 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch direction.
Fig. 9 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch direction.
Fig. 10 is a partial schematic view of another embodiment of the composite prefabricated arch base of the present invention in cross section along the arch.
Parts, positions and numbers in the drawings: the prefabricated arched bottom plate 1, the support 2, the sleeve 31, the threaded inlet 311, the bolt 312, the shear stud 313, the first fixing ring 314, the second fixing ring 315, the connecting rod 32, the pin 321, the sleeve 33, the screw 331, the nut 332, the washer 333 and the post-cast concrete laminated layer 4.
Detailed Description
The invention will be further explained with reference to the drawings.
The combined prefabricated arched bottom plate comprises a prefabricated arched bottom plate 1 and a support piece 2, wherein ribs are arranged in the prefabricated arched bottom plate 1, namely, a reinforcing steel bar net piece is arranged in the prefabricated arched bottom plate 1. The prefabricated arched bottom plate 1 is a reinforced concrete plate or a prestressed reinforced concrete plate. The connecting piece is also buried in the prefabricated arched bottom plate 1, the upper end of the connecting piece penetrates out of the outer side surface of the prefabricated arched bottom plate 1, and the part penetrating out of the outer side surface of the prefabricated arched bottom plate 1 forms shear-resistant studs, so that the shear-resistant studs can realize the shear-resistant connection between the prefabricated arched bottom plate 1 and new concrete on the outer side surface of the prefabricated arched bottom plate 1, namely the shear-resistant connection between the prefabricated arched bottom plate and the post-cast concrete laminated layer. Specifically, referring to fig. 1 to 3, in the prefabricated arched bottom plate of the present invention, the connector is a sleeve 31, and a portion of the prefabricated arched bottom plate 1 that penetrates out of the outer side surface may be a cylinder of the sleeve 31, or may be a steel bar segment fixedly connected to an upper end of the sleeve 31, for example, a steel bar segment welded and connected, and the steel bar segment forms a shear stud 313. The sleeves 31 may or may not be welded to the reinforcing bars of the prefabricated arched deck 1.
The lower end of the sleeve 31 is provided with a threaded inlet 311, the support member 2 is connected to the inner side surface of the prefabricated arch-shaped bottom plate 1, and the support member 2 is connected to the threaded inlet 311 of the sleeve 31 through a bolt 312. The prefabricated arched bottom plate 1 and the supporting piece 2 are detachably connected through the sleeves 31 and the bolts 312. The supporting members 2 improve the strength of the prefabricated arched bottom plate 1, the combined prefabricated arched bottom plate can be used for a larger span on the premise that the prefabricated arched bottom plate 1 is thinner, and the bending resistance of the prefabricated arched bottom plate 1 in the construction stage can be flexibly adjusted.
The support 2 is a part for supporting the prefabricated arched deck 1, and may be an arched rod-like or arched frame member. At least one supporting member 2 is an arch bar, and the supporting members 2 may be plural according to the size of the prefabricated arch base 1. The arrangement and number of the sleeves 31 and the supporting members 2 are premised on meeting the strength requirement and ensuring safety. The number of sleeves 31, i.e. the arrangement of the encryption sleeves 31, can be increased for the ends of the support 2, as shown in fig. 1. Accordingly, the gap of the support member 2 can be reduced at the edge of the prefabricated arched deck 1, i.e., the support member 2 is arranged in a encrypted manner to ensure safety.
The support member 2 can be made of section steel, and referring to fig. 1-3, the support member 2 is made of C-shaped section steel with an opening on the inner side. In addition, the supporting member 2 may also be an alloy profile, a concrete member or a polymer material member. For example, as shown in fig. 4 to 7, the supporting member 2 is a section steel, and the section shape of the section steel is a groove shape, a C shape, a rectangular shape, an L shape or an i shape. When the supporting member 2 is an i-shaped section steel, two rows of sleeves 31 may be provided for each section steel to ensure the balance of the connection, as shown in fig. 7.
The support 2 may be an arched bar or beam, but also a frame structure. For easy assembly and hoisting, the supporting member 2 is preferably made of high-strength, light-weight and low-cost section steel. In order to facilitate the hoisting of the combined prefabricated arched bottom plate, the upper end of the partial sleeve 31 can be welded and connected with a hoisting ring, and the hoisting ring is used for hoisting and has the equivalent function with the shear resistant stud 313.
In order to make the inner surface of the prefabricated arched bottom plate 1 a smooth curved surface, the sleeve 31 is embedded in the prefabricated arched bottom plate 1, and the lower end of the sleeve 31 does not exceed the inner surface of the prefabricated arched bottom plate 1.
In order to ensure the stability between the connecting piece and the prefabricated arched bottom plate 1, an anti-slip structure matched with the prefabricated arched bottom plate 1 is arranged on the outer side of the connecting piece. The anti-slip structure can be a side wing arranged on the outer side of the connecting piece, the side wing is embedded in the prefabricated arched bottom plate 1, or the anti-slip structure is that the outer contour of the connecting piece is in a cone or pyramid shape, and one end with relatively smaller sections of the cone and the pyramid is close to the supporting piece 2. Alternatively, as shown in fig. 3, the anti-slip structure is such that a first fixing ring 314 protruding from the sleeve 31 is provided around the sleeve 31. The first fixing ring 314 is buried in the concrete of the prefabricated arched bottom plate 1. Preferably, the first fixing ring 314 is located on the outer side of the prefabricated arched bottom plate 1.
The prefabricated arched bottom plate 1 and the supporting member 2 of the combined prefabricated arched bottom plate of the present invention are detachably connected by a connecting member, which may be a connecting rod 32 in addition to the above-mentioned sleeve 31. As shown in fig. 8, the upper end of the connecting rod 32 penetrates through the outer side surface of the prefabricated arched bottom plate 1, the lower end of the connecting rod 32 penetrates through the inner surface of the prefabricated arched bottom plate 1, the part of the connecting rod 32 penetrating through the inner surface of the prefabricated arched bottom plate 1 is provided with a pin hole, a pin 321 penetrates through the pin hole, and the support member 2 is connected to the lower end of the connecting rod 32 through the pin 321. The tie rods 32 are also provided with shear studs 313 and anti-slip features in line with the sleeves 31 described above. The support 2 may be a section steel, an alloy section, a concrete member or a polymer material member. After the supporting piece 2 is dismantled in the later construction stage, the part of the connecting rod 32 penetrating out of the inner surface of the prefabricated arched bottom plate 1 is cut off, and the inner surface of the prefabricated arched bottom plate 1 can be guaranteed to be a smooth curved surface.
In addition, the connecting piece of the combined prefabricated arched bottom plate can also be a sleeve 33. Referring to fig. 9, a screw 331 penetrates through the casing 33, both upper and lower ends of the screw 331 penetrate through the casing 33 and are sleeved with a nut 332, and the lower end of the screw 331 is connected to the support 2 through the nut 332. In order to ensure the stability of the connection of the support 2, a washer 333 is provided between the end of the sleeve 33 and the support 2, outside the screw 331. Both ends of the sleeve 33 may be provided with washers 333. In addition, the supporting member 2 can be connected to the upper end of the screw 331, that is, the supporting member 2 is located outside the prefabricated arched bottom plate 1, and a casting space for the post-cast concrete laminated layer 4 is reserved between the supporting member 2 and the arched bottom plate 1. The length of the sleeve 33 preferably corresponds to the total thickness of the prefabricated arched deck 1 and the upper post-cast concrete laminate. The material and structure of the supporting member 2 are as described above, and will not be repeated here.
According to the invention, the prefabricated arched bottom plate is combined, the supporting piece 2 can also be connected to the outer side of the prefabricated arched bottom plate 1, and a space for pouring the post-cast concrete superposed layer is reserved between the supporting piece 2 and the outer side surface of the prefabricated arched bottom plate 1. For example, referring to fig. 10, the upper end of the sleeve 31 is provided with a screw inlet 311, and the support member 2 is coupled to the upper side of the prefabricated arch-shaped base plate 1 by means of bolts 312. The threaded inlet 311 extends through the outer side of the prefabricated arched deck 1, i.e., the upper end of the sleeve 31 extends through the outer side of the prefabricated arched deck 1. And a space for pouring a concrete superposed layer after pouring is arranged between the upper end of the sleeve 31 and the outer side surface of the prefabricated arched bottom plate 1. The upper end of the sleeve 31 has an equivalent function to the shear studs 313. The material and structure of the supporting member 2 are as described above, and will not be repeated here.
In order to facilitate the detachment of the support member 2 and ensure that the outer side surface of the post-cast concrete laminated layer is a smooth curved surface, the height of the sleeve 31 exposed out of the outer side surface of the prefabricated arched bottom plate 1 is consistent with the design thickness of the upper post-cast concrete laminated layer. The supporting member 2 can be further provided with a lifting hole or a lifting ring so as to facilitate the lifting of the combined prefabricated arched bottom plate.
Because the combination prefabricated arched bottom plate is hoisted through the support piece 2, the stress between the sleeve 31 and the bolt 312 is larger, and in order to ensure the safety, the outer side of the sleeve 31 is provided with an anti-slip structure matched with the prefabricated arched bottom plate 1. For example, the anti-slip structure is: a second fixing ring 315 protruding from the sleeve 31 is provided around the sleeve 31, and the second fixing ring 315 is buried in the prefabricated arched bottom plate 1. Preferably, the second fixing ring 315 is located at the inner surface of the prefabricated arched bottom panel 1, which not only facilitates the installation and fixation of the sleeve 31 before the pouring of the prefabricated arched bottom panel 1, but also improves the bearing capacity, as shown in fig. 10. The diameter of the second retaining ring 315 may be determined from force analysis calculations. The sleeve 31 may be connected to the reinforcing bars of the prefabricated arched deck 1 by welding or not.
When the support 2 is located on the outer side of the prefabricated arched deck 1, it is preferred that the support 2 is an arched rod to reduce the influence of the support 2 on the upper casting.
In the above-mentioned assembled prefabricated arched deck according to the present invention, whether the supporting members 2 are located on the outer side surface or the inner side surface of the prefabricated arched deck 1, it is preferable that the connecting members are arranged in rows in the prefabricated arched deck 1, the rows being one or more, and it is preferable that the rows of the connecting members are parallel to each other when the rows of the connecting members are two or more, depending on the size of the prefabricated arched deck 1. The supporting elements 2 are preferably arched rods or beams and are connected to the rows of connecting elements, respectively; the number of the rows of the supporting pieces 2 is the same as that of the rows of the connecting pieces, namely at least one supporting piece, when the number of the supporting pieces 2 is two or more, the supporting pieces 2 in each row are parallel to each other, and the distance between every two adjacent rows of the supporting pieces 2 is 100-3000 mm. Every support piece 2 is connected through two at least connecting pieces, and in same support piece 2, the interval of two adjacent connecting pieces is 50 ~ 2000 mm. At the end of the support 2, the distance between two adjacent connectors is reduced, i.e. the connectors are arranged encrypted at the end of the support 2, as shown in fig. 1. As the support 2 increases the strength of the prefabricated arched bottom plate 1, the prefabricated arched bottom plate 1 can be made very thin, and certainly can be made thicker, for example, the thickness is 30-300 mm. The prefabricated arched bottom plate 1 is a reinforced concrete slab or a prestressed reinforced concrete slab of C20-C60, such as a C30 reinforced concrete slab.
The second subject of the invention: composite floor structure, including the prefabricated arch bottom plate of above-mentioned combination, the lateral surface of the prefabricated arch bottom plate of combination is the post-cast concrete superimposed layer 4 of arrangement of reinforcement, and the upper end of connecting piece is buried underground in post-cast concrete superimposed layer 4 and is not worn out the lateral surface of post-cast concrete superimposed layer 4, as shown in fig. 1 ~ 3 and 9 ~ 10. The connecting piece and the reinforcing bar of the post-cast concrete laminated layer 4 can not be connected or can be connected by welding. Specifically, the thickness of the post-cast concrete laminated layer 4 is 60-300 mm, for example, any integral five of 60-300 mm, and specifically determined according to the span, the total thickness of the post-cast concrete laminated layer 4 and the combined prefabricated arched bottom plate is 90-600 mm.
Claims (12)
1. Combination prefabricated arch bottom plate, its characterized in that: the prefabricated arched bottom plate (1) is a reinforced concrete plate or a prestressed reinforced concrete plate, a connecting piece is buried in the prefabricated arched bottom plate (1), the upper end of the connecting piece penetrates out of the outer side surface of the prefabricated arched bottom plate (1), the outer side surface of the prefabricated arched bottom plate (1) is a pouring template of a post-poured concrete laminated layer, the supporting piece (2) is positioned on the inner side or the outer side of the prefabricated arched bottom plate (1), and the supporting piece (2) is detachably connected to the upper end or the lower end of the connecting piece; the connecting piece is sleeve (31), connecting rod (32) or sleeve pipe (33), wherein:
the sleeve (31) is embedded in the prefabricated arched bottom plate (1), a thread inlet (311) is formed in any one end of the sleeve (31), and the support piece (2) is connected to the thread inlet (311) of the sleeve (31) through a bolt (312);
the upper end of the connecting rod (32) penetrates out of the outer side face of the prefabricated arched bottom plate (1), the lower end of the connecting rod (32) penetrates out of the inner side face of the prefabricated arched bottom plate (1), the lower section of the connecting rod (32) is provided with a pin hole, a pin (321) penetrates through the pin hole, and the support piece (2) is connected to the lower end of the connecting rod (32) through the pin (321);
the screw rod (331) penetrates through the sleeve (33), any end of the upper end and the lower end of the screw rod (331) is connected with the support piece (2) through the nut (332), and the other end of the screw rod (331) is fixed through the nut (332).
2. The modular prefabricated arched deck of claim 1, wherein: the lower end of the sleeve (31) does not penetrate through the inner side surface of the prefabricated arched bottom plate (1); the lower end of the sleeve (33) does not exceed the inner side surface of the prefabricated arched bottom plate (1), and a gasket (333) is arranged between the end part of the sleeve (33) and the support (2).
3. The modular prefabricated arched deck of claim 1, wherein: and the outer side of the connecting piece is provided with an anti-slip structure matched with the prefabricated arched bottom plate (1).
4. The modular prefabricated arched deck of claim 3, wherein: the anti-slip structure is as follows: the outer side of the connecting piece is provided with a ring shape protruding out of the connecting piece; or, the anti-slip structure is as follows: the outer side of the connecting piece is wave-shaped or round table-shaped, and the end with smaller cross section area of the round table is close to the supporting piece (2).
5. The modular prefabricated arched deck of claim 1, wherein: the supporting piece (2) is a section steel, an alloy section bar, a concrete member or a high polymer material member.
6. A combined prefabricated arched deck as claimed in any one of claims 1 to 5, wherein: the lower end of the sleeve (31) is provided with a threaded inlet (311), the support (2) is connected to the inner side of the prefabricated arched bottom plate (1), and the part of the sleeve (31) penetrating out of the outer side of the prefabricated arched bottom plate (1) forms a shear-resistant stud (313); the supporting piece (2) is an arched rod or an arched beam.
7. The modular prefabricated arched deck of claim 6, wherein: a first fixing ring (314) protruding out of the barrel body of the sleeve (31) is arranged on the periphery of the sleeve (31), and the first fixing ring (314) is located on the outer side face of the prefabricated arched bottom plate (1).
8. A combined prefabricated arched deck as claimed in any one of claims 1 to 5, wherein: the upper end of the sleeve (31) is provided with a thread inlet (311), the upper end of the sleeve (31) penetrates out of the outer side face of the prefabricated arched bottom plate (1), and the supporting piece (2) is connected to the upper side of the prefabricated arched bottom plate (1).
9. The modular prefabricated arched deck of claim 8, wherein: and a second fixing ring (315) protruding out of the cylinder body of the sleeve (31) is arranged around the sleeve (31), and the second fixing ring (315) is embedded in the inner surface of the prefabricated arched bottom plate (1).
10. A combined prefabricated arched deck as claimed in any one of claims 1 to 5, wherein: the supporting pieces (2) are arched rods or arched beams, at least two supporting pieces (2) are parallel to each other, and the distance between every two adjacent supporting pieces (2) is 100-3000 mm; the same support piece (2) is connected with the prefabricated arched bottom plate (1) through at least two connecting pieces, and the arc distance between every two adjacent connecting pieces on the same support piece (2) is 50-2000 mm; the thickness of the prefabricated arched bottom plate (1) is 30-300 mm.
11. Coincide arched plate, its characterized in that: the combined prefabricated arched bottom plate comprises the combined prefabricated arched bottom plate as claimed in any one of claims 1 to 10, a post-cast concrete laminated layer (4) with reinforcing bars is poured on the outer side surface of the prefabricated arched bottom plate (1), and the upper end of a connecting piece is buried in the post-cast concrete laminated layer (4).
12. A laminated arch board as defined in claim 11, wherein: the lateral surface of pouring concrete superimposed sheet (4) after not wearing out is watered to the upper end of connecting piece, and the thickness of pouring concrete superimposed sheet (4) after is 60 ~ 300mm, and the gross thickness of pouring concrete superimposed sheet (4) after and the prefabricated arch bottom plate of combination is 90 ~ 600 mm.
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| CN201811126192.5A CN109267654B (en) | 2018-09-26 | 2018-09-26 | Combined prefabricated arch bottom plate and superposed arch plate |
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| CN111058543B (en) * | 2020-01-03 | 2024-08-16 | 广州大学 | Connection structure of concrete slab and steel beam and installation method |
| CN111962373A (en) * | 2020-09-01 | 2020-11-20 | 山东省路桥集团有限公司 | Cast-in-situ RC and prefabricated UHPC combined box arch structure and construction method |
| LU503246B1 (en) * | 2022-12-23 | 2024-06-24 | Univ Luxembourg | Fastening between timber slab and beam with shear load bearing and assembly/disassembly capacities |
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