CN117386066A - Prefabricated UHPC beam member and beam slab connection structure - Google Patents
Prefabricated UHPC beam member and beam slab connection structure Download PDFInfo
- Publication number
- CN117386066A CN117386066A CN202311186785.1A CN202311186785A CN117386066A CN 117386066 A CN117386066 A CN 117386066A CN 202311186785 A CN202311186785 A CN 202311186785A CN 117386066 A CN117386066 A CN 117386066A
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- stirrups
- bottom plate
- stirrup
- ribs
- 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.)
- Pending
Links
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 41
- 210000003205 muscle Anatomy 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims description 35
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 19
- 238000010008 shearing Methods 0.000 description 11
- 238000005266 casting Methods 0.000 description 8
- 239000002131 composite material Substances 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- 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
-
- 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
-
- 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
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
- E04C5/0613—Closed cages made of one single bent reinforcement mat
Abstract
The invention discloses a prefabricated UHPC beam component, which comprises a prefabricated beam made of UHPC, wherein the prefabricated beam comprises a bottom plate and side plates arranged on two opposite sides of the bottom plate, a pouring groove with an upward opening is formed between the bottom plate and the side plates, and a steel skeleton is arranged in the prefabricated beam; the steel skeleton is including setting up the last angle muscle in the upper end of curb plate and setting up the lower angle muscle in the lower extreme of curb plate, goes up angle muscle and lower angle muscle and all extends along the length direction of precast beam, goes up the cover and is provided with outer stirrup on angle muscle and the lower angle muscle, and the base of outer stirrup is pre-buried in the bottom plate, and the side of outer stirrup is pre-buried in the curb plate. The dead weight is lightened, the bending resistance is improved, and the erection of the support at the lower side of the precast beam can be reduced. In addition, also propose a prefabricated UHPC beam plate connection structure, including above-mentioned prefabricated UHPC beam member, during the construction, need not set up template and support.
Description
Technical Field
The invention relates to the technical field of assembled structures, in particular to a prefabricated UHPC beam member and beam plate connecting structure.
Background
In recent years, assembled concrete buildings are being widely popularized throughout the country, and currently, large-span structures are widely applied to assembled integral frame structures. The prefabricated components are connected in the mode of post-pouring nodes in the assembled integral frame structure, and the stress performance of the system is equivalent to cast-in-situ.
The fabricated frame structure system is generally composed of prefabricated columns, laminated beams and laminated plates. The composite beam and the composite slab are connected in a mode of post-pouring of joints, the composite beam is made of common concrete, in the construction process, the composite beam needs to be placed on the composite beam, and the lower side of the composite beam needs to be erected with a support because the existing composite beam is heavy in weight and poor in bending resistance so as to ensure the safety of the composite beam, and the measure cost is increased.
Disclosure of Invention
The invention provides a prefabricated UHPC beam component and beam slab connecting structure, which aims to solve the defects of large self weight and poor bending resistance of the existing superposed beam, lightens the self weight, improves the bending resistance and can reduce the erection of the support at the lower side of the prefabricated beam.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the prefabricated UHPC beam component comprises a prefabricated beam made of UHPC, wherein the prefabricated beam comprises a bottom plate and side plates arranged on two opposite sides of the bottom plate, a pouring groove with an upward opening is formed between the bottom plate and the side plates, and a steel skeleton is arranged in the prefabricated beam; the steel skeleton is including setting up the last angle muscle in the upper end of curb plate and setting up the lower angle muscle in the lower extreme of curb plate, goes up angle muscle and lower angle muscle and all extends along the length direction of precast beam, goes up the cover and is provided with outer stirrup on angle muscle and the lower angle muscle, and the base of outer stirrup is pre-buried in the bottom plate, and the side of outer stirrup is pre-buried in the curb plate.
Through the arrangement, the precast beam is made of UHPC (Ultra-High Performance Concrete), the bending strength of the precast beam is improved by utilizing the characteristics of the UHPC, the dead weight is lightened, the bending strength of the precast beam is further improved by the steel skeleton, and a support is not required to be erected on the lower side of the precast beam during construction, so that the expenditure of measure cost is saved; on the other hand, the prefabricated beam is hollow and is U-shaped, so that the weight of the prefabricated beam can be reduced, and the prefabricated beam is convenient to install and transport.
A prefabricated UHPC beam plate connecting structure comprises a prefabricated floor plate and the prefabricated UHPC beam member, wherein the end part of the prefabricated floor plate is placed on a side plate through a cushion block; during construction, concrete is poured on the upper side of the prefabricated building bottom plate, the concrete is paved on the upper side of the prefabricated building bottom plate, the concrete falls from the edge of the prefabricated building bottom plate to fill the pouring groove, and the upper side of the concrete is higher than the upper end of the outer stirrup.
Through the arrangement, the UHPC has the characteristics of high strength and high durability, the precast beam made of the UHPC has high strength and good bending resistance, the steel skeleton further improves the strength and the bending resistance of the precast beam, and when the precast beam supports the precast floor slab, the precast beam does not need to be provided with a support at the lower side of the precast beam, so that the measure cost can be saved; the interior of the precast beam is hollowed out to be U-shaped, so that the weight of the precast beam can be reduced, and the precast beam is convenient to install and transport; the precast beam can serve as a template, and the template is not required to be additionally erected during pouring; when the concrete is poured, the cushion block can prevent the concrete from leaking when the concrete is poured.
Further, a plurality of interior stirrups have been set gradually along the length direction of precast beam, interior stirrup is vertical arrangement's rectangle, interior stirrup's lower extreme is pre-buried in the bottom plate and flush with the lower extreme of outer stirrup, interior stirrup's upper end and outer stirrup's upper end flush, be provided with in the bottom plate with lower angle muscle parallel down indulge the muscle, it is inboard to indulge the muscle down and lie in interior stirrup, interior stirrup's upper end inboard is provided with and indulges the muscle down parallel on indulging the muscle.
Through the arrangement, the upper corner rib, the upper longitudinal rib, the lower longitudinal rib and the lower corner rib can bear tensile force, so that the bending resistance of the precast beam is improved, and the outer stirrup and the inner stirrup can improve the shearing resistance of the precast beam.
Further, the upside of curb plate is provided with the first turn-ups of inwards extending, and one side that prefabricated building bottom plate is close to pouring the groove flushes with the inboard of first turn-ups, and the topside of outer stirrup is less than prefabricated building bottom plate and passes through from the notch of pouring the groove, has vertically inserted the connecting rib in the pouring groove, and the upper end of connecting rib is higher than in the upside of prefabricated building bottom plate, and the upper and lower both ends of connecting rib are all buckled and are formed the unhook.
Through the arrangement, the cross section area of the upper side of the precast beam is increased by the first flanging, so that the compressive strength of the upper side of the precast beam is increased, and the bending resistance of the precast beam is further improved; the inner side of the prefabricated floor plate is flush with the inner side of the first flanging, so that concrete can be conveniently poured downwards; the connecting ribs can prevent concrete from cracking.
Further, a plurality of outer stirrups have been set gradually along the length direction of precast beam, and outer stirrup is the rectangle, and upper corner muscle and lower corner muscle are located the bight of outer stirrup, and outer stirrup slope sets up, and adjacent two outer stirrup slope opposite directions.
Through the arrangement, the outer stirrups can be obliquely arranged on the precast beam with smaller shearing force, so that the number of the outer stirrups is reduced, and the aim of saving steel is fulfilled.
Further, the outer stirrups are spirally sleeved on the upper corner stirrups and the lower corner stirrups along the length direction of the precast beam, two outer stirrups are arranged, the spiral directions of the two outer stirrups are opposite, and therefore the two outer stirrups are mutually intersected on the upper side and the lower side.
Through the arrangement, the shearing resistance of the precast beam can be increased, and the preparation efficiency of the steel skeleton is also improved.
Further, a plurality of waist ribs parallel to the upper corner ribs are arranged in the side plates, the waist ribs are arranged on the inner sides of the outer stirrups, tie bars are arranged between the side plates, two ends of each tie bar are embedded in the side plates and bent downwards to form hooks, and the hooks hook the waist ribs.
Further, the upside of curb plate is provided with the second turn-ups of outside extension, and prefabricated building bottom plate's tip is shelved on the second turn-ups through the cushion, and outer stirrup's upper end is higher than prefabricated building bottom plate's upside, and outer stirrup is the rectangle, and lower angle muscle is located the inboard of the bight of outer stirrup's lower extreme, and the bight inboard of outer stirrup's upper end is provided with the external angle muscle parallel with lower angle muscle.
Further, truss ribs are arranged between the upper corner ribs, the truss ribs extend in a wave shape along the length direction of the upper corner ribs, and two opposite sides of the width direction of the truss ribs are welded on the upper corner ribs.
Through the arrangement, after the precast beam receives downward load, the truss rib can share a part of pressure received by the upper corner rib, so that the stability of the steel skeleton is improved, and the bending resistance of the precast beam is improved.
Drawings
Fig. 1 is a schematic diagram of a prefabricated UHPC beam-slab connection structure according to an embodiment.
Fig. 2 is a schematic view of the steel skeleton of fig. 1.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic view of an outer stirrup in the form of a spiral sleeved over an upper and lower stirrup.
Fig. 5 is a schematic view of two spiral outer stirrups sleeved on an upper corner rib and a lower corner rib.
Fig. 6 is a cross-sectional view of fig. 1.
Fig. 7 is a schematic view of fig. 6 after casting concrete.
Fig. 8 is a schematic diagram of another embodiment of a prefabricated UHPC beam-slab connection structure.
Fig. 9 is a schematic view of the steel skeleton of fig. 8.
Fig. 10 is a cross-sectional view of fig. 8.
Fig. 11 is a schematic view of fig. 10 after casting concrete.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1 to 11, a prefabricated UHPC beam member comprises a prefabricated beam 3 made of UHPC, the prefabricated beam 3 comprising a bottom plate 31 and side plates 32 disposed on opposite sides of the bottom plate 31, a pouring groove with an upward opening being formed between the bottom plate 31 and the side plates 32, and a steel skeleton being disposed in the prefabricated beam; the steel skeleton is including setting up the last angle muscle 5 in the upper end of curb plate 32 and setting up the lower angle muscle 6 in the lower extreme of curb plate 32, and the length direction that all follows precast beam 3 is extended to last angle muscle 5 and lower angle muscle 6, and the cover is provided with outer stirrup 7 on last angle muscle 5 and the lower angle muscle 6, and the base of outer stirrup 7 is pre-buried in bottom plate 31, and the side of outer stirrup 7 is pre-buried in curb plate 32.
Through the arrangement, the precast beam is made of UHPC (Ultra-High Performance Concrete), the bending strength of the precast beam is improved by utilizing the characteristics of the UHPC, the dead weight is lightened, the bending strength of the precast beam is further improved by the steel skeleton, and a support is not required to be erected on the lower side of the precast beam during construction, so that the expenditure of measure cost is saved; on the other hand, the prefabricated beam 3 is hollow and is U-shaped, so that the weight of the prefabricated beam 3 can be reduced, and the installation and the transportation are convenient.
The prefabricated UHPC beam plate connecting structure comprises a prefabricated floor plate 1 and the prefabricated UHPC beam members, wherein the end parts of the prefabricated floor plate 1 are placed on side plates 32 through cushion blocks 20; during construction, concrete 4 is poured on the upper side of the prefabricated building bottom plate 1, the concrete 4 is paved on the upper side of the prefabricated building bottom plate 1, the concrete 4 falls from the edge of the prefabricated building bottom plate 1 to fill the pouring groove, and the upper side of the concrete 4 is higher than the upper end of the outer stirrup 7.
Through the arrangement, the UHPC has the characteristics of high strength and high durability, the precast beam 3 made of the UHPC has high strength and good bending resistance, the steel skeleton further improves the strength and the bending resistance of the precast beam 3, and when the precast beam 3 supports the precast floor plank 1, the precast beam 3 does not need to be supported at the lower side, so that the measure cost can be saved; the interior of the precast beam 3 is hollowed out to be U-shaped, so that the weight of the precast beam 3 can be reduced, and the precast beam is convenient to install and transport; the precast beam 3 can serve as a template, and the template is not required to be additionally erected during pouring; the spacer 20 prevents the concrete 4 from leaking when the concrete 4 is poured.
Specifically, the prefabricated building bottom plate 1 can be formed by pouring ordinary concrete 4, so that the manufacturing cost is reduced, and also can be made of UHPC (ultra high performance concrete), and the prefabricated building bottom plate is specifically adjusted according to actual requirements. The post-cast concrete 4 is ordinary concrete 4. During construction, the precast beams 3 are erected, the precast floor boards 1 are placed on the cushion blocks 20 after the cushion blocks 20 are placed on the upper sides of the side plates 32, the cushion blocks 20 can protect the edges of the precast floor boards 1 and the precast beams 3, collision between the precast floor boards 1 and the precast beams 3 is prevented, the tightness between the precast beams 3 and the precast floor boards 1 is improved, and when concrete 4 is poured, the concrete 4 cannot leak.
Specifically, in the case that the precast beams 3 shown in fig. 1, 6, 7, 8, 10 and 11 are middle beams, when in construction, two adjacent precast floor slabs 1 are placed at the upper ends of the side plates 32 through the cushion blocks 20, a casting channel 2 communicated with the casting groove is formed between the precast floor slabs 1, when in construction, concrete 4 flows into the casting groove through the casting channel 2, finally, the concrete 4 is spread on the upper side of the precast floor slabs 1, meanwhile, the casting channel 2 and the casting groove are filled with the concrete 4, and the cushion blocks 20 can prevent the concrete 4 from leaking; in this process, the precast beams 3 and the precast floor plank 1 function as templates. When the precast beam 3 is a side beam, the precast floor plank 1 is only required to be placed at one side of the precast beam 3, which is not shown in the figure.
As an implementation manner, a plurality of inner stirrups 8 are sequentially arranged along the length direction of the precast beam 3, the inner stirrups 8 are vertically arranged in a rectangular shape, the lower ends of the inner stirrups 8 are embedded in the bottom plate 31 and flush with the lower ends of the outer stirrups 7, the upper ends of the inner stirrups 8 are flush with the upper ends of the outer stirrups 7, lower longitudinal ribs 9 parallel to the lower corner stirrups 6 are arranged in the bottom plate 31, the lower longitudinal ribs 9 are located on the inner side of the inner stirrups 8, and upper longitudinal ribs 10 parallel to the lower longitudinal ribs 9 are arranged on the inner side of the upper ends of the inner stirrups 8.
Through the arrangement, the upper corner reinforcements 5, the upper longitudinal reinforcements 10, the lower longitudinal reinforcements 9 and the lower corner reinforcements 6 can bear tensile force, so that the bending resistance of the precast beam 3 is improved, and the outer stirrups 7 and the inner stirrups 8 can improve the shearing resistance of the precast beam 3.
In one embodiment, referring to fig. 6 and 7, the upper side of the side plate 32 is provided with a first flange 11 extending inwards, one side of the prefabricated building bottom plate 1 close to the pouring slot is flush with the inner side of the first flange 11, the top edge of the outer stirrup 7 is lower than the prefabricated building bottom plate 1 and passes through the notch of the pouring slot, a connecting rib is vertically inserted into the pouring slot, the upper end of the connecting rib is higher than the upper side of the prefabricated building bottom plate, and the upper end and the lower end of the connecting rib 12 are bent to form an anti-unhooking hook 13.
By the arrangement, the cross section area of the upper side of the precast beam 3 is increased by the first flanging 11, so that the compressive strength of the upper side of the precast beam 3 is increased, and the bending resistance of the precast beam 3 is further improved; the inner side of the prefabricated floor plate 1 is flush with the inner side of the first flanging 11, so that concrete 4 can be poured downwards conveniently; in reality, the connecting rib passes through the pouring channel, and in the using stage, the connecting rib 12 can prevent the concrete 4 at the pouring channel 2 from cracking.
As an implementation manner, referring to fig. 1, 2 and 3, a plurality of outer stirrups 7 are sequentially arranged along the length direction of the precast beam 3, the outer stirrups 7 are rectangular, the upper corner stirrups 5 and the lower corner stirrups 6 are positioned at the corners of the outer stirrups 7, the outer stirrups 7 are obliquely arranged, and the oblique directions of the two adjacent outer stirrups 7 are opposite.
Through the arrangement, the outer stirrups 7 can be obliquely arranged on the precast beam 3 with smaller shearing force, so that the number of the outer stirrups 7 is reduced, and the purpose of saving steel is achieved. In addition, referring to fig. 3, the upper and lower sides of the outer stirrup and the angle bars are inclined, and similar to the truss mechanism, when the side plates at the two sides of the bottom plate are about to move forwards and backwards, the upper and lower sides of the outer stirrup are subjected to tensile force or pressure, the side plates at the two sides of the bottom plate are prevented from moving forwards and backwards, and the stability of the precast beam is ensured.
Wherein, referring to fig. 2 and 3, the outer stirrup 7 comprises a first shear section 71 extending vertically, the first shear section 71 resisting shear forces when the precast beam 3 is in use; in addition, referring to fig. 3, the upper and lower sides of the outer stirrup and the angle bars are inclined, and similar to the truss mechanism, when the side plates at the two sides of the bottom plate are about to move forwards and backwards, the upper and lower sides of the outer stirrup are subjected to tensile force or pressure, the side plates at the two sides of the bottom plate are prevented from moving forwards and backwards, and the stability of the precast beam is ensured. The outer stirrups 7 are obliquely arranged, so that the first shearing resistant portions 71 are alternately arranged on opposite sides of the precast beam 3 in the width direction. At this time, the plane of the outer stirrup 7 extends vertically, the plane of the outer stirrup 7 and the length direction of the precast beam 3 form an acute angle or an obtuse angle, and two adjacent outer stirrups 7 are symmetrically arranged in a splayed shape.
In another embodiment, referring to fig. 4 and 5, the outer stirrups 7 are screwed along the length direction of the precast beam 3 and sleeved on the upper corner stirrups 5 and the lower corner stirrups 6, and the number of the outer stirrups 7 is two, and the screw directions of the two outer stirrups 7 are opposite, so that the two outer stirrups 7 are mutually intersected at the upper side and the lower side.
Through the arrangement, the shearing resistance of the precast beam 3 can be increased, and the preparation efficiency of the steel skeleton is also improved.
Specifically, referring to fig. 5, the outer stirrup 7 includes a second shearing resistant portion 72 extending in a vertical direction, and the outer stirrup 7 is installed by winding, first, the manufacturing efficiency of the steel skeleton is improved; second, when the spiral directions of the two outer stirrups 7 are opposite, the second shearing resistant portions 72 of the two outer stirrups 7 are symmetrically arranged left and right, so that the density of the second shearing resistant portions 72 is increased, and the shearing resistance of the precast beam 3 is improved.
As an implementation manner, a plurality of waist ribs 14 parallel to the upper corner ribs 5 are arranged in the side plates 32, the waist ribs 14 are arranged on the inner sides of the outer stirrups 7, tie ribs 15 are arranged between the side plates 32, two ends of each tie rib 15 are pre-buried in the side plates 32 and bent downwards to form hooks 16, and the hooks 16 hook the waist ribs 14.
In another embodiment, referring to fig. 8 to 11, the upper side of the side plate 32 is provided with a second flange 17 extending outwards, the end of the prefabricated building bottom plate 1 is placed on the second flange 17 through the cushion block 20, the upper end of the outer stirrup 7 is higher than the upper side of the prefabricated building bottom plate 1, the outer stirrup 7 is rectangular, the lower corner stirrup 6 is located at the inner side of the corner of the lower end of the outer stirrup 7, and the inner side of the corner of the upper end of the outer stirrup 7 is provided with an external corner stirrup 18 parallel to the lower corner stirrup 6.
Through the arrangement, the outer stirrup 7 passes through the pouring channel 2, so that the concrete 4 in the pouring channel 2 is prevented from cracking; the external corner ribs 18 help the precast beam 3 to resist bending after being pulled.
As one implementation manner, truss ribs 19 are arranged between the upper corner ribs 5, the truss ribs 19 extend in a wave shape along the length direction of the upper corner ribs 5, and two opposite sides of the truss ribs 19 in the width direction are welded on the upper corner ribs 5.
Through the arrangement, after the precast beam 3 receives downward load, the truss rib 19 can share a part of the pressure received by the upper corner rib 5, so that the stability of the steel skeleton is increased, and the bending resistance of the precast beam 3 is further improved.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (9)
1. The prefabricated UHPC beam component is characterized by comprising a prefabricated beam made of UHPC, wherein the prefabricated beam comprises a bottom plate and side plates arranged on two opposite sides of the bottom plate, a pouring groove with an upward opening is formed between the bottom plate and the side plates, and a steel skeleton is arranged in the prefabricated beam;
the steel skeleton is in including setting up last angle muscle in the upper end of curb plate with set up lower angle muscle in the lower extreme of curb plate, go up the angle muscle with lower angle muscle is all followed the length direction of precast beam extends, go up the angle muscle with cover is provided with outer stirrup on the angle muscle down, the base of outer stirrup is pre-buried in the bottom plate, the side of outer stirrup is pre-buried in the curb plate.
2. A prefabricated UHPC beam-slab connection structure comprising a prefabricated floor slab, and a prefabricated UHPC beam member as claimed in claim 1, the ends of the prefabricated floor slab resting on the side panels by means of spacers;
during construction, concrete is poured on the upper side of the prefabricated building bottom plate, the concrete is paved on the upper side of the prefabricated building bottom plate, the concrete falls from the edge of the prefabricated building bottom plate to fill the pouring groove, and the upper side of the concrete is higher than the upper end of the outer stirrup.
3. The prefabricated UHPC beam plate connecting structure of claim 2, wherein a plurality of inner stirrups are sequentially arranged along the length direction of the prefabricated beam, the inner stirrups are vertically arranged in a rectangle, the lower ends of the inner stirrups are embedded in the bottom plate and are flush with the lower ends of the outer stirrups, the upper ends of the inner stirrups are flush with the upper ends of the outer stirrups, lower longitudinal ribs parallel to the lower corner ribs are arranged in the bottom plate, the lower longitudinal ribs are positioned on the inner sides of the inner stirrups, and upper longitudinal ribs parallel to the lower longitudinal ribs are arranged on the inner sides of the upper ends of the inner stirrups.
4. The connection structure of prefabricated UHPC beam plates according to claim 3, wherein the upper side of the side plate is provided with a first flange extending inwards, one side of the prefabricated building bottom plate close to the pouring groove is flush with the inner side of the first flange, the top edge of the outer stirrup is lower than the prefabricated building bottom plate and passes through the notch of the pouring groove, the connecting rib is vertically inserted into the pouring groove, the upper end of the connecting rib is higher than the upper side of the prefabricated building bottom plate, and the upper end and the lower end of the connecting rib are bent to form an anti-unhooking hook.
5. The prefabricated UHPC beam plate connecting structure of claim 3, wherein a plurality of outer stirrups are sequentially arranged along the length direction of the prefabricated beam, the outer stirrups are rectangular, the upper corner stirrups and the lower corner stirrups are positioned at the corners of the outer stirrups, the outer stirrups are obliquely arranged, and the oblique directions of the two adjacent outer stirrups are opposite.
6. A prefabricated UHPC beam-slab connection structure according to claim 3, wherein the outer stirrups are screwed around the upper and lower angle stirrups along the length direction of the prefabricated beam, and the number of the outer stirrups is two, and the screw directions of the two outer stirrups are opposite, so that the two outer stirrups cross each other at the upper and lower sides.
7. The prefabricated UHPC beam plate connecting structure of claim 3, wherein a plurality of waist ribs parallel to the upper corner ribs are arranged in the side plates, the waist ribs are arranged on the inner sides of the outer stirrups, lacing wires are arranged between the side plates, two ends of the lacing wires are embedded in the side plates and bent downwards to form hooks, and the hooks hook the waist ribs.
8. A prefabricated UHPC beam-slab connection structure according to claim 3, wherein the upper side of the side plate is provided with a second flange extending outwards, the end of the prefabricated building bottom plate is placed on the second flange through the cushion block, the upper end of the outer stirrup is higher than the upper side of the prefabricated building bottom plate, the outer stirrup is rectangular, the lower angle stirrup is located inside the corner of the lower end of the outer stirrup, and an external angle stirrup parallel to the lower angle stirrup is arranged inside the corner of the upper end of the outer stirrup.
9. The connection structure of prefabricated UHPC beam panels according to claim 8, wherein truss ribs are provided between the upper corner ribs, the truss ribs extend in a wave shape along the length direction of the upper corner ribs, and two opposite sides of the truss ribs in the width direction are welded to the upper corner ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311186785.1A CN117386066A (en) | 2023-09-14 | 2023-09-14 | Prefabricated UHPC beam member and beam slab connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311186785.1A CN117386066A (en) | 2023-09-14 | 2023-09-14 | Prefabricated UHPC beam member and beam slab connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386066A true CN117386066A (en) | 2024-01-12 |
Family
ID=89467391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311186785.1A Pending CN117386066A (en) | 2023-09-14 | 2023-09-14 | Prefabricated UHPC beam member and beam slab connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386066A (en) |
-
2023
- 2023-09-14 CN CN202311186785.1A patent/CN117386066A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EA007917B1 (en) | Constructing the large-span self-braced buildings of composite load-bearing wall panels and floors | |
| CN111411721A (en) | Assembly type prefabricated floor slab secondary beam combined component | |
| CN107447873B (en) | Device for connecting prefabricated laminated connecting beam and prefabricated shear wall and installation method | |
| CN104018521B (en) | Subway twin columns overhead station steel reinforced concrete transformational structure reinforcing bar and construction method thereof | |
| CN113356370A (en) | Mutual anchoring connection construction method for shear wall, frame column and concrete beam bracket | |
| CN107989247B (en) | Assembled superposed hollow floor system and construction method thereof | |
| CN117386066A (en) | Prefabricated UHPC beam member and beam slab connection structure | |
| CN215211508U (en) | Connecting joint of concrete column and steel column | |
| KR101069394B1 (en) | Deckpanel | |
| CN114775908A (en) | Assembled connection structure with prefabricated post and girder steel | |
| CN211666086U (en) | Prefabricated superposed beam | |
| KR102247070B1 (en) | Installation structure of hollow core slab | |
| CN112144660A (en) | Herringbone stiff column base structure and construction method thereof | |
| CN214738733U (en) | Increase girder steel and concrete slab integrated configuration of building clear height | |
| CN111719417A (en) | Fully-prefabricated light large cantilever pre-bending combined bent cap beam structure and construction method | |
| CN112663866B (en) | Concrete coupling beam structure for super high-rise building and design, prefabrication and construction method thereof | |
| KR20160149087A (en) | Built-up beam having truss reinforcement | |
| KR101833949B1 (en) | Composite intergrated optimized cross-section | |
| CN219671864U (en) | U-shaped steel and concrete composite beam | |
| CN214696246U (en) | Concrete coupling beam structure capable of effectively reducing shearing force | |
| CN114737605B (en) | Box-type steel concrete top cover and frame system for oversized underground space under heavy load | |
| CN215106427U (en) | Hollow superimposed sheet of enhancement steel pipe truss prestressing force | |
| CN220704781U (en) | Reinforced concrete column rigidity overlap joint conversion node | |
| KR102586172B1 (en) | H-beam having tube upper-flange | |
| CN214006187U (en) | Prefabricated dense rib plate |
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 |