CN213741819U - Close hollow superimposed sheet of piecing together - Google Patents

Abstract

The utility model discloses a close hollow superimposed sheet of piecing together, including the bottom plate that has horizontal rib roof beam and vertical rib roof beam truss reinforcing bar, horizontal rib roof beam sets up along bottom plate length direction, vertical rib roof beam truss reinforcing bar sets up along bottom plate width direction, be provided with the light obturator on the bottom plate between the adjacent horizontal rib roof beam, light obturator, bottom plate and horizontal rib roof beam synthesize become integrative prefabricated bottom plate structure that forms, and a plurality of prefabricated bottom plates splice along its width direction, and the concatenation is taken one's place the back and is pour vertical rib roof and the roof along bottom plate width direction, forms close rib cavity floor, the light obturator corresponds the hollow part that the department is the superimposed sheet. The utility model discloses combine cast-in-place hollow floor and truss reinforcing bar superimposed sheet's advantage, with the cavity in light obturator, coincide bottom plate and the horizontal close rib synthetic an organic whole, form the bottom plate of taking one-way close rib and light obturator, can satisfy bearing capacity and the rigidity that great span floor construction needs, need not support or reduce the support by other facility worker.

Description

Close hollow superimposed sheet of piecing together

Technical Field

The utility model belongs to the technical field of the superimposed sheet, in particular to close hollow superimposed sheet of piecing together.

Background

Compared with the traditional integral cast-in-place floor slab, the truss reinforced concrete composite slab avoids construction procedures such as formwork erecting and lower reinforcement binding on a construction site, saves building materials, shortens the construction period, is green and environment-friendly, and meets the national development requirement on building industrialization; however, the truss steel bar laminated slab is suitable for medium and small span floor systems, a certain support needs to be arranged, construction cost is increased, a post-cast strip needs to be supported, steel bars are discharged from a bottom plate, and the construction difficulty is increased. In the full cast-in-situ large-span floor, the hollow floor slab forms a cavity by utilizing the light filling body to reduce the weight, has high bearing capacity and saves materials, is widely applied to public buildings, but has larger difficulty in site construction.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: to the problem that above-mentioned exists, provide a bearing capacity and rigidity that can satisfy great span floor construction needs, and do not need the close hollow superimposed sheet of piecing together that other facilities worker supported or reduced the support.

The technical scheme of the utility model is realized like this: the utility model provides a close hollow superimposed sheet of piecing together which characterized in that: including the bottom plate that has horizontal rib roof beam and vertical rib roof beam truss reinforcing bar, horizontal rib roof beam sets up along bottom plate length direction, vertical rib roof truss reinforcing bar sets up along bottom plate width direction, be provided with the light obturator on the bottom plate between the adjacent horizontal rib roof beam, light obturator, bottom plate and horizontal rib roof beam synthesize become integrative prefabricated bottom plate structure, and a plurality of prefabricated bottom plates splice along its width direction, and the concatenation is taken one's place the back and is pour vertical rib roof and the roof along bottom plate width direction, forms dense rib cavity floor, the light obturator corresponds the hollow part that the department is the superimposed sheet.

Closely piece together hollow superimposed sheet, through piece connected node interconnect between its adjacent prefabricated floor structure, piece connected node indulges muscle bending segment and faying face joint bar at the bottom of the board, indulge the muscle bending segment at the bottom of the board and indulge the muscle for the bottom plate inner panel end and stretch out the bottom plate and upwards buckle the part, faying face joint bar arranges in the concatenation region, and both ends extend to the concatenation end that corresponds prefabricated floor structure respectively.

Closely piece together hollow superimposed sheet, when it splices between the adjacent prefabricated floor structure, concatenation between board and the board promptly has prefabricated the truss reinforcing bar in the concatenation end of bottom plate, truss reinforcing bar bottom is pre-buried in the bottom plate, and all the other parts expose in the concatenation region, indulge at the bottom of the board on the adjacent bottom plate muscle bending segment and lie in between the truss reinforcing bar on the adjacent bottom plate, the whole U-shaped that is of faying face joint bar, the vertical bending part in its both ends is close to the side end that corresponds horizontal rib roof beam.

Closely piece together hollow superimposed sheet, it is when the concatenation between prefabricated floor structure and the frame roof beam, concatenation between board and the roof beam promptly, prefabricated floor structure sets up the both sides at the frame roof beam respectively, the board end longitudinal reinforcement bending section on the bottom plate is located between its horizontal rib roof beam and the frame roof beam, faying face joint bar interconnect forms closed ring-type joint bar, faying face joint bar runs through frame roof beam and both ends and is connected with the prefabricated floor structure concatenation end of frame roof beam both sides respectively.

Close hollow superimposed sheet of piecing together, it is in a plurality of horizontal logical long structure muscle have been arranged to bottom in the concatenation region prefabricated bottom plate structure top has been arranged a plurality of board tops and has been indulged the muscle.

Close hollow superimposed sheet of piecing together, it is in horizontal rib roof beam upper portion is provided with leads to long reinforcing bar along its transverse rib roof beam of transverse arrangement, and hollow position upper portion interval between adjacent horizontal rib roof beam is provided with horizontal logical long reinforcing bar vertical rib roof beam upper portion is provided with leads to long reinforcing bar along its vertical arrangement's vertical rib roof beam, and hollow position upper portion interval between adjacent vertical rib roof beam is provided with vertical logical long reinforcing bar.

Closely piece together hollow superimposed sheet, it is in horizontal girt leads to between the long reinforcing bar and the horizontal long reinforcing bar of leading to and is provided with horizontal additional reinforcing bar between the adjacent horizontal long reinforcing bar vertical girt leads to between the long reinforcing bar and the vertical long reinforcing bar and adjacent vertical leading to between the long reinforcing bar and is provided with vertical additional reinforcing bar.

Close hollow superimposed sheet of piecing together, it prefabricated bottom plate structure corresponds department with the frame post and is solid region, and plays to corresponding hollow region's width d by supporting the limit and is not less than 0.2 times thick board, and is not less than 50 mm.

Close hollow superimposed sheet of piecing together, it is in the tip that horizontal rib roof beam is close to the frame roof beam is pre-buried to have additional reinforcing bar of rib roof beam tip.

Closely piece together hollow superimposed sheet, it is in pre-buried shear reinforcement that has in the horizontal rib roof beam, shear reinforcement lower part and the board end are indulged the muscle and are connected, and its upper portion is indulged the muscle with the board top and is connected, shear reinforcement adopts steel bar truss, or adopts the reinforcing bar net piece, or adopts single reinforcing bar and be provided with the horizontal muscle of arranging perpendicularly with single reinforcing bar at the top that is close to horizontal rib roof beam.

The utility model discloses combine cast-in-place hollow floor and truss reinforcing bar superimposed sheet's advantage, with the cavity in light obturator, coincide bottom plate and the horizontal close rib synthetic an organic whole, at the scale production of mill, form the bottom plate of taking one-way close rib and light obturator, can satisfy bearing capacity and the rigidity that great span floor construction needs, need not support or reduce the support by other facility worker.

The utility model discloses a close hollow superimposed sheet of piecing together has outside the advantage of ordinary truss reinforcing bar superimposed sheet such as the degree of assemblization height, on-the-spot wet work is few, still has following characteristics:

1) the bearing capacity is high, can eliminate the secondary beam, improves indoor net height, avoids the connection of primary and secondary beams, raises the efficiency.

2) The bottom plate with the transverse ribs is produced in a factory, the rigidity is high, the transportation and the hoisting are convenient, and the support can be cancelled or reduced on site.

3) The floor slabs are spliced closely, the cast-in-place layer at the splicing position is thick, the integrity is good, and the floor slabs have good horizontal rigidity and horizontal force transfer capability.

4) The light filling body at the cavity is made of materials such as a filling box or light filling materials, so that the weight is reduced, and the light filling body has the functions of heat preservation, heat insulation and sound insulation.

To sum up, the utility model discloses a hollow superimposed sheet of concrete has combined cast-in-place hollow slab and truss reinforcing bar superimposed sheet's characteristics, has advantages such as safety, economy, energy-concerving and environment-protective, construction convenience, can be extensive be applied to engineering practice.

Drawings

Fig. 1 is a schematic view of the prefabricated base plate structure of the present invention.

Fig. 2 is the utility model discloses well adjacent prefabricated bottom plate structure's concatenation schematic diagram.

Fig. 3 is the utility model discloses well prefabricated bottom plate structure and the concatenation sketch map of frame roof beam.

Fig. 4 is the utility model discloses well prefabricated bottom plate structure after the concatenation plan view.

Fig. 5 is a partial enlarged view of the joint between the middle prefabricated floor structure and the frame column of the present invention.

Fig. 6 is a schematic view of the transverse arrangement of the reinforcing bars in the present invention.

Fig. 7 is a schematic diagram of the vertically arranged reinforcing bars of the present invention.

Fig. 8 is a schematic structural diagram of the shear reinforcement embedded in the middle transverse rib beam.

Fig. 9 is another schematic structural diagram of the shear reinforcement embedded in the middle transverse rib beam of the present invention.

Fig. 10 is another schematic structural diagram of the shear reinforcement embedded in the middle transverse rib beam of the present invention.

Fig. 11 is a schematic structural view of the connection portion between the middle rib beam and the frame beam of the present invention.

The labels in the figure are: the steel plate is characterized in that the steel plate is a bottom plate 1, a transverse rib beam 2, a light filling body 3, a vertical rib beam 4, a top plate 5, a truss steel bar 6, a plate bottom longitudinal bar bending section 7, a joint surface connecting bar 8, a splicing area 9, a plate bottom longitudinal bar 10, a frame beam 11, a transverse through-length structural bar 12, a plate top longitudinal bar 13, a transverse rib beam through-length steel bar 14, a transverse through-length steel bar 15, a vertical rib beam through-length steel bar 16, a vertical through-length steel bar 17, a transverse additional steel bar 18, a vertical additional steel bar 19, a frame column 20, a solid area 21, a rib beam end additional steel bar 22, a steel bar truss 23, a steel bar net piece 24, a single-pulling steel bar 25 and a transverse bar 26.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is made in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

as shown in fig. 1, a close-spliced hollow composite slab comprises a bottom plate 1 with a transverse rib beam 2 and a vertical rib beam truss steel bar, wherein the transverse rib beam 2 is arranged along the length direction of the bottom plate 1, the vertical rib beam truss steel bar is arranged along the width direction of the bottom plate, a light filling body 3 is arranged between the adjacent transverse rib beams 2 on the bottom plate 1, the vertical rib beam truss steel bar is arranged between the adjacent light filling bodies, the light filling body 3, the bottom plate 1 and the transverse rib beam 2 are synthesized into a prefabricated bottom plate structure, large-scale production in a factory is realized, a plurality of prefabricated bottom plates are spliced along the width direction of the prefabricated bottom plates, a vertical rib beam 4 and a top plate 5 along the width direction of the bottom plate 1 are poured after splicing in place, a dense rib cavity floor slab with good integrity is formed, and the light filling body 3 is correspondingly positioned at the hollow part of the composite slab. The utility model discloses a close hollow superimposed sheet of piecing together can realize two-way biography power, and the vertical component of effective coordination warp, satisfies the rigid floor assumption, does not go out the muscle simultaneously all around, convenient construction, and bottom plate rigidity is big moreover, can realize supporting less or not have the support.

Specifically, through piece joint connected node interconnect between the adjacent prefabricated bottom plate structure, piece joint connected node includes that the muscle bending segment 7 is indulged at the bottom of the board and faying face splice bar 8, the muscle bending segment 7 is indulged at the bottom of 1 inner panel of bottom plate and is indulged muscle 10 and stretch out bottom plate 1 and the part of upwards buckling at the bottom of the board, faying face splice bar 8 arranges splicing region 9 in, and both ends extend to the splicing end that corresponds prefabricated bottom plate structure respectively. The utility model discloses a bottom plate adopts the mode of close piece together, avoids out a series of problems that the reinforcing bar brought, and piece department adopts reinforcing bar overlap joint to connect, under the effect of truss reinforcing bar, can full play concrete bond ability, realizes effective overlap joint, and the reinforcing bar is buckled simultaneously, reduces overlap joint length, has realized no template, has made things convenient for the site operation.

The utility model discloses a hollow superimposed sheet, its computational analysis can adopt according to "cast in situ concrete hollow superstructure technical regulation" (JGJ/T268 supplyes 2012) and plan the board method or plan the roof beam method. When the beam-like method is used for calculation, the beam stiffness needs to take the orthogonal anisotropy of the plate into consideration. For the close-spliced hollow composite slab, except the same as a cast-in-place hollow slab, the rigidity difference exists in two directions of the slab due to the arrangement mode of the light filling bodies, and the rigidity in the direction perpendicular to the splicing seam can be weakened and the rigidity difference in the two directions of the hollow slab can be further increased due to the close-spliced connection between the bottom plates. Through research and analysis, the load guiding mode of the close-spliced hollow composite slab and the cast-in-place hollow floor slab can be considered to be the same.

In this embodiment, the light filler is a light material such as foamed concrete and cellular concrete, and its physical and mechanical properties should meet the following requirements: apparent density (kg/m 3): 15.0-500.0, local compressive strength (kN) after soaking for 48 hours: not less than 1.0, natural water absorption (%): less than or equal to 5, and vibration impact resistance: phi 30, the vibrating rod is tightly attached to the surface and vibrates for 1min, through cracks and damages do not occur, and the vibrating rod and the bottom plate are manufactured together in a factory, so that the problem of difficulty in fixing the diaphragm capsule on site is solved.

As shown in fig. 2, when the adjacent prefabricated bottom plate structures are spliced, that is, the plates are spliced, truss steel bars 6 are prefabricated at the splicing ends of the bottom plates 1, the bottoms of the truss steel bars 6 are embedded in the bottom plates 1, the rest parts of the truss steel bars are exposed in a splicing area 9, the plate bottom longitudinal bar bending sections 7 on the adjacent bottom plates 1 are located between the truss steel bars 6 on the adjacent bottom plates 1, the joint surface connecting bars 8 are integrally U-shaped and perpendicular to the splice joints, according to the tensile lap joint design, the vertical bending parts at the two ends of the joint surface connecting bars are close to the side ends of the corresponding transverse rib beams 2, the diameter of the vertical bending parts is not less than 8mm and not more than 14mm, and the additional steel bars are hooked at 90 degrees. The utility model discloses an adopt close concatenation seam between the board, the regional overlap joint reinforcing bar of concatenation kickup, truss reinforcing bar reinforced concrete bond stress realizes that bottom plate reinforcing bar and seam overlap joint reinforcing bar effectively pass power.

As shown in fig. 3, when the prefabricated bottom plate structure is spliced with the frame beam 11, that is, the prefabricated bottom plate structure is spliced with the frame beam 11, the prefabricated bottom plate structure is respectively disposed at both sides of the frame beam 11, the plate bottom longitudinal rib bending section 7 on the bottom plate 1 is located between the transverse rib beam 2 and the frame beam 11, the joint surface connecting ribs 8 are connected with each other to form a closed ring-shaped connecting rib, the joint surface connecting rib 8 penetrates through the frame beam 11, and both ends of the joint surface connecting rib are respectively connected with the spliced ends of the prefabricated bottom plate structure at both sides of the frame beam 11.

A plurality of transverse through-length construction ribs 12 perpendicular to joint ribs of a joint surface are arranged at the bottom in the splicing area 9, the number of the transverse through-length construction ribs is not less than 3 in a lapping range, the distance is not more than 250mm, a plurality of plate top longitudinal ribs 13 are arranged above the prefabricated bottom plate structure, a top plate is made of common steel bars, and the common steel bars are relatively and intensively arranged in the effective flange width range of the rib beam; the minimum reinforcement ratio needs to meet As/A0/. gtoreq.p.minI/I0. The configuration of the additional reinforcing steel bars meets the following requirements: the bending resistance bearing capacity of the B-B section (the abutted seam position) is not smaller than that of the A-A section (the non-abutted seam position), and the height of the section is the height of the section of the cast-in-place layer when the bearing capacity of the B-B section is calculated.

As shown in fig. 6 and 7, a transverse rib beam through-length steel bar 14 arranged transversely along the transverse rib beam is arranged on the upper portion of the transverse rib beam 2, the diameter of the transverse rib beam is not less than 10, transverse through-length steel bars 15 are arranged at intervals on the upper portion of a hollow position between adjacent transverse rib beams 2, a vertical rib beam through-length steel bar 16 arranged vertically along the vertical rib beam is arranged on the upper portion of the vertical rib beam 4, vertical through-length steel bars 17 are arranged at intervals on the upper portion of a hollow position between adjacent vertical rib beams 4, transverse additional steel bars 18 are arranged between the transverse rib beam through-length steel bar 14 and the transverse through-length steel bar 15 and between adjacent transverse through-length steel bars 15, and vertical additional steel bars 19 are arranged between the vertical rib beam through-length steel bar 16 and the vertical through-length steel bar 17 and between adjacent vertical through-length steel bars 17.

As shown in FIGS. 4 and 5, the floor slab with 8mx8m span is divided into three plates, the width of each plate is 2000-2550, the length of each diaphragm box is 800-1100, the width of each diaphragm box is 500-800, the width of each rib is 100-200, the close-splicing connection width is 650, the single side is 325, the lap joint requirement is met, the thickness of the bottom plate is 50-60, and the thickness of the cast-in-place layer is 60-70. The prefabricated bottom plate structure is characterized in that a solid area 21 is arranged at the position corresponding to the frame column 20, the solid area meets the requirement of the shearing bearing capacity, the width d from a supporting edge to the corresponding hollow area is not less than 0.2 times of the plate thickness and not less than 50mm, the solid area with the side length of not less than 500mm is arranged at the periphery of the hollow laminated plate positioned around the frame column, the top and the bottom of the hollow laminated plate in the area are provided with construction steel bars in a bidirectional mode, the diameter of the plate is not less than 8, and the distance of the plate is not more than 200 mm.

Specifically, the direction of the steel bars in the bottom plate parallel to the rib beam is preferably a prestressed steel bar and common steel bar mixed reinforcement mode, or only common steel bars can be adopted, the direction of the bottom plate vertical to the rib beam is preferably common steel bars, the prestressed steel bars of the bottom plate are preferably a linear pretensioning method tensioning process by adopting a long line method, and when the pretensioning method process is adopted, additional transverse steel bars are arranged along the member within a certain range at the end part of the member, and the number of the additional transverse steel bars is not less than 3; when the prestressed tendons are intensively arranged at the rib beam, as shown in fig. 11, rib beam end additional steel bars 22 are embedded at the end part of the transverse rib beam 2 close to the frame beam 11.

As shown in fig. 8, in order to improve the shear strength of the prefabricated base plate, shear steel bars are embedded in the transverse rib beam 2, the lower portions of the shear steel bars are connected with the plate bottom longitudinal bars 10, the upper portions of the shear steel bars are connected with the plate top longitudinal bars 13, and the shear steel bars are steel bar trusses 23.

Example 2:

this example is substantially the same as example 1, with the main differences: as shown in fig. 9, the shear reinforcement is a mesh 24 of reinforcing bars.

Example 3:

this example is substantially the same as example 1, with the main differences: as shown in fig. 10, the shear reinforcement is a single-strand reinforcement 25 and a transverse bar 26, which is perpendicular to the single-strand reinforcement 25 and has a diameter of not less than 10, is provided near the top of the transverse rib 2.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a close hollow superimposed sheet of piecing together which characterized in that: including bottom plate (1) that has horizontal rib beam (2) and vertical rib beam truss reinforcing bar, bottom plate (1) length direction setting is followed in horizontal rib beam (2), vertical rib beam truss reinforcing bar sets up along bottom plate (1) width direction, be provided with light obturator (3) on bottom plate (1) between adjacent horizontal rib beam (2), light obturator (3), bottom plate (1) and horizontal rib beam (2) are synthesized and are become integrative prefabricated bottom plate structure, and a plurality of prefabricated bottom plates splice along its width direction, pour vertical rib beam (4) and roof (5) along bottom plate (1) width direction after the concatenation is taken one's place, form close rib cavity floor, light obturator (3) correspond the hollow part that the department is the superimposed sheet.

2. A close-coupled hollow composite slab as claimed in claim 1, wherein: through piece connected node interconnect between adjacent prefabricated bottom plate structure, piece connected node includes that the muscle bending segment (7) and faying face splice bar (8) are indulged at the bottom of the board, indulge muscle bending segment (7) and stretch out bottom plate (1) and the part of upwards buckling for bottom plate (1) inner panel end longitudinal bar (10) at the bottom of the board, in splicing region (9) are arranged in faying face splice bar (8), and both ends extend to the splicing end that corresponds prefabricated bottom plate structure respectively.

3. A close-coupled hollow composite slab as claimed in claim 2, wherein: when splicing between the adjacent prefabricated bottom plate structures, namely splicing between plates, truss reinforcing steel bars (6) are prefabricated at the splicing ends of the bottom plates (1), the bottoms of the truss reinforcing steel bars (6) are embedded in the bottom plates (1), the rest parts of the truss reinforcing steel bars are exposed in a splicing area (9), the plate bottom longitudinal bar bending sections (7) on the adjacent bottom plates (1) are located between the truss reinforcing steel bars (6) on the adjacent bottom plates (1), the joint surface connecting bars (8) are integrally U-shaped, and the vertical bending parts at the two ends of the joint surface connecting bars are close to the side ends of the corresponding transverse rib beams (2).

4. A close-coupled hollow composite slab as claimed in claim 2, wherein: when splicing between the prefabricated bottom plate structure and the frame beam (11), namely splicing between the plate and the beam, the prefabricated bottom plate structure is arranged on two sides of the frame beam (11) respectively, the plate bottom longitudinal rib bending section (7) on the bottom plate (1) is positioned between the transverse rib beam (2) and the frame beam (11), the joint surface connecting ribs (8) are connected with each other to form a closed annular connecting rib, and the joint surface connecting ribs (8) penetrate through the frame beam (11) and are connected with the splicing ends of the prefabricated bottom plate structure on two sides of the frame beam (11) respectively at two ends.

5. A close-coupled hollow composite slab according to claim 3 or 4, wherein: a plurality of transverse through-length construction ribs (12) are arranged at the bottom in the splicing area (9), and a plurality of plate top longitudinal ribs (13) are arranged above the prefabricated bottom plate structure.

6. The close-fit hollow composite slab according to claim 5, wherein: the transverse rib beam (2) is provided with transverse rib beam through-length steel bars (14) transversely arranged along the transverse rib beam, transverse through-length steel bars (15) are arranged at intervals on the upper portion of a hollow position between every two adjacent transverse rib beams (2), vertical rib beam through-length steel bars (16) vertically arranged along the vertical rib beams are arranged on the upper portion of the vertical rib beams (4), and vertical through-length steel bars (17) are arranged at intervals on the upper portion of a hollow position between every two adjacent vertical rib beams (4).

7. The close-fit hollow composite slab according to claim 6, wherein: transverse additional steel bars (18) are arranged between the transverse rib beam through long steel bars (14) and the transverse through long steel bars (15) and between the adjacent transverse through long steel bars (15), and vertical additional steel bars (19) are arranged between the vertical rib beam through long steel bars (16) and the vertical through long steel bars (17) and between the adjacent vertical through long steel bars (17).

8. The close-fit hollow composite slab according to claim 5, wherein: the prefabricated bottom plate structure is a solid area (21) at the position corresponding to the frame column (20), and the width d from the supporting edge to the corresponding hollow area is not less than 0.2 times of the plate thickness and is not less than 50 mm.

9. The close-fit hollow composite slab according to claim 5, wherein: and additional steel bars (22) at the end parts of the rib beams (2) close to the frame beam (11) are embedded in the end parts of the rib beams.

10. The close-fit hollow composite slab according to claim 5, wherein: shear steel bars are pre-buried in the transverse rib beam (2), the lower portions of the shear steel bars are connected with the plate bottom longitudinal bars (10), the upper portions of the shear steel bars are connected with the plate top longitudinal bars (13), the shear steel bars are steel bar trusses (23), or steel bar meshes (24), or single-pull steel bars (25), and transverse bars (26) which are perpendicular to the single-pull steel bars (25) are arranged on the top portions, close to the transverse rib beam (2).

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