CN216196746U - Hoisting structure for prefabricated bottom plate with medium and long ribs - Google Patents

Abstract

The utility model discloses a hoisting structure for a prefabricated bottom plate with medium and long ribs, which comprises: the structure roof beam that sets up side by side, the overlap joint of structure roof beam upper portion has the prefabricated bottom plate of well long rib the structure roof beam is provided with on the terminal surface reason each other and can dismantle the angle steel, can dismantle one side of angle steel terminal surface laminate in the terminal surface of structure roof beam, another side terminal surface laminate of dismantling the angle steel in terminal surface under the prefabricated bottom plate of well long rib, can dismantle the angle steel be provided with be used for with can dismantle the tight structure in top that angle steel and well long rib prefabricated bottom plate closely laminated, well long rib prefabricated bottom plate up end is provided with hoisting structure. The steel pipe with the semicircular holes is additionally arranged in the short side direction of the prefabricated bottom plate, so that the height of the material in the short side direction of the prefabricated bottom plate is increased, the bending resistance is improved, the problem that the short side direction of the prefabricated bottom plate is damaged due to hoisting is effectively solved, and the width of the produced prefabricated bottom plate is larger.

Description

Hoisting structure for prefabricated bottom plate with medium and long ribs

Technical Field

The utility model relates to the field of prefabricated concrete structure buildings, in particular to a hoisting structure for a middle-long rib prefabricated bottom plate.

Background

At present, in actual fabricated concrete buildings, ribbed prefabricated bottom plates have the advantages of prefabricated ribs, good bending resistance, large applicable span and the like, so that various ribbed prefabricated bottom plates are very commonly applied. However, the hoisting structure of the ribbed prefabricated bottom plate and the connection mode of the ribbed prefabricated bottom plate and the beam are rarely involved in the structure of the ribbed prefabricated bottom plate, and the structure corresponding to the ribbed prefabricated bottom plate is lacked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hoisting structure for a middle-long rib prefabricated bottom plate, which is provided with a hoisting ring structure and adopts a temporary lap joint structure for the prefabricated bottom plate and a structural beam.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a hoisting structure for a prefabricated bottom plate with medium and long ribs, which comprises: the structure roof beam that sets up side by side, the overlap joint of structure roof beam upper portion has the prefabricated bottom plate of well long rib the structure roof beam is provided with on the terminal surface reason each other and can dismantle the angle steel, can dismantle one side of angle steel terminal surface laminate in the terminal surface of structure roof beam, another side terminal surface laminate of dismantling the angle steel in terminal surface under the prefabricated bottom plate of well long rib, can dismantle the angle steel be provided with be used for with can dismantle the tight structure in top that angle steel and well long rib prefabricated bottom plate closely laminated, well long rib prefabricated bottom plate up end is provided with hoisting structure.

The prefabricated bottom plate with the medium-long ribs comprises a plate body structure, wherein a plurality of medium-long ribs are distributed on the upper end face of the plate body structure in an equidistant and parallel mode, lifting rings are arranged at two ends of each medium-long rib respectively, a tubular piece is inserted into each lifting ring, and a lifting rope is sleeved on each tubular piece.

Shear keys are further arranged at two ends of the middle and long rib respectively, the hanging rings are arranged between the middle and long rib and the shear keys, and I-shaped parts are arranged on the middle and long rib and the shear keys.

The lower part of the tubular piece is also provided with a semicircular hole, a gasket is arranged on the semicircular hole pad, and the lifting rope is lapped on the gasket to hoist the middle-long rib prefabricated bottom plate.

The prefabricated bottom plate with the medium and long ribs comprises a plate body structure, wherein a plurality of steel bar trusses are distributed on the upper end face of the plate body structure in an equidistant and parallel mode, the medium and long ribs are arranged between two adjacent steel bar trusses, so that the steel bar trusses and the medium and long ribs are arranged alternately, a tubular piece is arranged below the steel bar trusses in a penetrating mode, and a lifting rope is sleeved on the tubular piece.

The screw rods are preset on the end faces, facing each other, of the structural beams, mounting holes are formed in the joint end faces of the detachable angle steels and the structural beams in a penetrating mode, the screw rods penetrate through the mounting holes, and nuts are screwed at the end portions, penetrating through the mounting holes, of the end portions, at one ends of the screw rods.

Threaded sleeves are preset on the end faces, facing each other, of the structural beams, mounting holes are formed in the detachable angle steel and the joint end faces of the structural beams in a penetrating mode, and threaded rods with nuts are inserted in the bolt sleeves and the mounting holes.

The utility model discloses a concrete that the roof beam is prefabricated to well long rib, the roof beam up end extends to the external parallel arrangement of roof beam and is provided with a plurality of U-shaped stirrup, the prefabricated bottom plate orientation of well long rib the structure roof beam both sides terminal surface extends to the outside parallel arrangement of bottom plate and has many to take the muscle, take the muscle overlap joint in the U-shaped stirrup, through the structure roof beam with the concrete that well long rib prefabricated bottom plate up end was pour is even as an organic whole.

The jacking structure is a fan-shaped top plate, or a circular top plate, or a rectangular top plate.

The hoisting structure for the middle-long rib prefabricated bottom plate has the beneficial effects that:

(1) innovation of lifting structure

In the existing fabricated concrete building, the prefabricated bottom plate component is generally lifted in a flat lifting mode. However, because the lengths of the long side and the short side of the prefabricated bottom plate are different, the bending rigidity of the two sides is greatly different, so that the short side direction of the member is easy to damage during hoisting, even if the concrete on the surface of the member has partial fine cracks, the interior of the member is damaged, and great potential safety hazards exist. In order to solve the problems, the utility model adds the steel pipe with the semicircular holes in the short side direction of the prefabricated bottom plate, increases the height of the material in the short side direction of the prefabricated bottom plate, improves the bending resistance, effectively solves the problem of damage caused by hoisting in the short side direction of the prefabricated bottom plate, and simultaneously can ensure that the width of the produced prefabricated bottom plate is larger.

The gasket arranged between the steel wire rope and the steel pipe can effectively avoid buckling deformation of the hole wall caused by overlarge local stress at the opening of the steel pipe during hoisting.

(2) Innovation of temporary lap joint structure of prefabricated bottom plate and structural beam

The ribbed prefabricated bottom plate is installed in the construction process of a structural beam, the ribbed prefabricated bottom plate can be used for avoiding the temporary support of the plate bottom in the span due to the existence of ribs, but the temporary support of the plate bottom needs to be arranged at the plate end because the plate end cannot be lapped on the beam or the allowable lapping length on the beam is very small, so that the construction difficulty, the construction period and the construction cost are increased. Therefore, the utility model provides a temporary lap joint structure of the prefabricated bottom plate and the structural beam, realizes the support-free construction during the assembly of the ribbed prefabricated bottom plate and the structural beam, reduces the construction difficulty, shortens the construction period, reduces the construction cost and has obvious economic benefit.

The temporary lap joint structure of the prefabricated bottom plate and the structural beam has remarkable innovation, and in the splicing process of the ribbed prefabricated bottom plate and the structural beam, the detachable angle steel and the top plate sequentially penetrate through the screw rods pre-embedded on the structural beam, and then the screw caps are screwed up to form the detachable angle steel external member. And finally, placing the prefabricated bottom plate on the flange of the detachable angle steel. Meanwhile, the angle adjustable top plate enables the upper surface of the flange of the detachable angle steel to be flush with the upper surface of the concrete of the structural beam, and the error generated by manufacturing of the assembly type component is made up.

Drawings

FIG. 1 is a schematic structural view of a structural beam with embedded screws;

FIG. 2 is a schematic structural view of a detachable angle iron;

FIG. 3 is an enlarged schematic view of a fan-shaped top sheet structure;

FIG. 4 is a schematic structural view of a structural beam of the detachable angle iron set (fan-shaped top plate) after installation;

FIG. 5 is a schematic structural diagram of a middle-long rib prefabricated bottom plate with embedded lifting rings;

FIG. 6 is a schematic structural view of a steel pipe;

FIG. 7 is an enlarged schematic view of the gasket construction;

FIG. 8 is a schematic structural view of a prefabricated base plate with medium and long ribs after passing through a steel wire rope and a gasket;

FIG. 9 is a schematic structural view of a beam slab after the middle-long rib prefabricated bottom plate is hoisted;

FIG. 10 is a schematic view of a beam slab structure after completion of a cast-in-place layer concrete operation;

FIG. 11 is a schematic structural diagram of a rib and key combined prefabricated bottom plate with an embedded hanging ring of a fixed I-shaped part;

FIG. 12 is a schematic structural view of a rib and key combined prefabricated base plate after passing through a steel wire rope and a gasket;

FIG. 13 is a schematic structural view of a beam slab after the rib and key combined prefabricated bottom plate is hoisted;

FIG. 14 is a schematic structural view of a prefabricated base plate of a ribbed steel bar truss;

FIG. 15 is a schematic structural view of the ribbed steel truss prefabricated bottom plate after passing through the steel wire rope and the gasket;

FIG. 16 is a schematic structural view of a beam slab after the prefabricated bottom plate of the ribbed steel bar truss is hoisted;

FIG. 17 is a schematic structural view of a structural beam of the assembled detachable angle iron kit (annular top plate);

FIG. 18 is an enlarged schematic view of the configuration of the circular top sheet and the rectangular top sheet;

FIG. 19 is a schematic structural view of a structural beam with embedded threaded sleeves;

FIG. 20 is an enlarged schematic view of a threaded sleeve configuration;

fig. 21 is an enlarged schematic view of a screw structure with a nut.

In the figure, 1-the eye; 2-prefabricating a bottom plate by using medium and long ribs; 3-a steel pipe; 4-detachable angle steel; 5-a screw; 6-a screw cap; 7-a fan-shaped top sheet; 8-detachable angle steel external member; 9-semicircular holes; 10-a steel wire rope; 11-a gasket; 12-oval holes; 13-a structural beam; 14-rib key combination prefabricated bottom plate; 15-an i-shaped piece; 16-prefabricating a bottom plate of the ribbed steel bar truss; 17-circular top sheet; 18-a rectangular top sheet; 19-a screw with a nut; 20-threaded sleeves, 21-medium long ribs, 22-shear keys and 23-steel bar trusses.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The first embodiment is as follows:

the prefabricated bottom plate hoisting structure of well long rib that this embodiment provided, including the structure roof beam 13 that sets up side by side, the overlap joint of structure roof beam 13 upper portion has well long rib prefabricated bottom plate 2 structure roof beam 13 is provided with detachable angle steel 4 towards the terminal surface reason each other on the terminal surface, can dismantle angle steel 4 a side terminal surface laminate in the terminal surface of structure roof beam 13, can dismantle angle steel 4 another side terminal surface laminate in terminal surface under the prefabricated bottom plate of well long rib 2, can dismantle angle steel 4 be provided with be used for with can dismantle the tight structure in top that angle steel 4 and well long rib prefabricated bottom plate 2 closely laminated, 2 up ends of well long rib prefabricated bottom plate are provided with hoisting structure.

Specifically, in the embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 10, the long and mid-length rib prefabricated bottom plate 2 includes a plate structure, a plurality of long and mid-length ribs 21 are distributed in parallel on the upper end surface of the plate structure at equal intervals, two ends of each long and mid-length rib 21 are respectively provided with a hanging ring, a tubular member is inserted on each hanging ring, a hanging rope is sleeved on each tubular member, specifically, three pairs of hanging rings are embedded, and are symmetrically arranged on two sides of each long and mid-length rib 21, and the bottom of each hanging ring is embedded in the long and mid-length rib prefabricated bottom plate 2, so that the tubular member enhances the bending rigidity of the long and mid-length rib prefabricated bottom plate 2 in the short side direction, and avoids the situation that the long and mid-length rib prefabricated bottom plate 2 is broken during the hoisting process, and the angle steel sleeve 8 is used for fixing the long and mid-length rib prefabricated bottom plate 2, which can save manpower and material resources required for supporting.

Further, in this embodiment, the lower portion of the tubular member is further provided with semicircular holes 9, the semicircular holes 9 are padded with gaskets 11, the lifting rope is lapped on the gaskets 11 to hoist the long and medium rib prefabricated base plate 2, specifically, as shown in fig. 6, the tubular member is a steel pipe 3, the side surface of the steel pipe 3 is provided with three pairs of semicircular holes 9, different semicircular holes 9 can be reasonably selected according to the width of the prefabricated base plate to pass through the steel wire ropes 10, and the semicircular holes 9 are symmetrically arranged at two ends of the steel pipe 3. Meanwhile, in order to increase the compression height of the steel pipe 3, the semicircular hole 9 is formed in the middle lower portion of the steel pipe 3, when the steel pipe 3 passes through the steel wire rope 10, the gasket 11 is added, and the gasket 11 is arranged between the semicircular hole 9 and the steel wire rope 10 as shown in fig. 7, so that buckling deformation of the semicircular hole 9 due to local overlarge stress is prevented.

Further, in this embodiment, the screw rods 5 are preset on the end surfaces of the structural beams 13 facing each other, the mounting holes are formed in the joint end surfaces of the detachable angle iron 4 and the structural beams 13 in a penetrating manner, the screw rods 5 penetrate through the mounting holes, nuts are screwed on the end portions of the screw rods 5 penetrating through the mounting holes, the detachable angle iron 4, the screw rods 5, the nuts 6 and the fan-shaped top plates 7 form an angle iron suite 8, during actual construction, the screw rods 5 are pre-embedded in the structural beams 13 in advance, and three oval holes 12 in total are formed in the detachable angle iron 4 and used as mounting holes for penetrating through the screw rods 5.

Further, in this embodiment, tight structure in top adopts fan-shaped top piece 7, can dismantle angle steel 4 top surface height through fan-shaped top piece 7 regulation to compensate the dimensional error that the assembled component produced because of the preparation before leaving the factory, specifically, as shown in fig. 3, fan-shaped top piece 7 has certain thickness, can rotate certain angle, make fan-shaped top piece 7 upper edge and the lower surface top tight that can dismantle the angle steel 4 edge of a wing, thereby can dismantle angle steel 4 edge of a wing upper surface height in the regulation, 7 angle modulation on three fan-shaped top pieces are accomplished the back, make can dismantle angle steel 4 and hug closely structural beam 13 through screwing up nut 6.

The construction method of the hoisting structure of the long and medium rib prefabricated bottom plate 2 is described in detail below with reference to the accompanying drawings, and comprises the following specific steps:

the method comprises the following steps: as shown in fig. 1, a screw 5 is pre-embedded at a predetermined position of a structural beam 13 before concrete is not poured, and after pre-embedding is completed, the structural beam 13 with the pre-embedded screw 5 is processed and manufactured and is put into a construction site for use;

step two: as shown in fig. 4, the detachable angle iron 4 with the hole is hung on the pre-embedded screw 5 of the structural beam 13 put into use in the construction site in the step one, the fan-shaped top plate 7 is placed, the fan-shaped top plate 7 is rotated to enable the upper surface of the flange of the detachable angle iron 4 to be flush with the concrete upper surface of the structural beam 13, and after the three fan-shaped top plates 7 are adjusted in angle, the nut 6 is screwed to enable the detachable angle iron 4 to be tightly attached to the structural beam 13;

step three: placing lifting rings 1 at preset positions on two sides of a long and middle rib 21 of a long and middle rib prefabricated bottom plate 2 before concrete pouring;

step four: pouring concrete on the long and medium rib prefabricated bottom plate 2 with the hanging ring 1 in the third step, and carrying out surface floating and galling treatment on the long and medium rib prefabricated bottom plate 2 so as to enable the rough concave-convex depth of the surface of the long and medium rib prefabricated bottom plate to be not less than 4mm, and removing the template when the strength requirement is met (when the strength of the test block under the same condition reaches 75% of the designed concrete cube compressive strength), thereby obtaining the long and medium rib prefabricated bottom plate 2 with the hanging ring 1 shown in figure 5;

step five: transporting the middle-long rib prefabricated bottom plate 2 with the hanging ring 1 in the fourth step to a preset position of a construction site, as shown in fig. 8, penetrating a steel pipe 3 through the hanging ring 1, then adding a gasket 11 in a semicircular hole 9 of the steel pipe 3, penetrating a steel wire rope 10 through the semicircular hole 9, finally hoisting the middle-long rib prefabricated bottom plate 2 to a specified position on the detachable angle steel 4 in the second step by using a tower crane for installation, placing the semicircular hole 9 of the steel pipe 3 in a semicircular mode upwards, and tightly jacking a gap between the steel pipe 3 and the hanging ring 1 by using a wood wedge to ensure that the steel pipe 3 and the hanging ring 1 cannot slide relatively;

step six: as shown in fig. 9, after the long and medium rib prefabricated bottom plate 2 is installed in step five, the steel wire rope 10 and the steel pipe 3 are removed and timely recovered for repeated use, and after recovery, the long and medium rib prefabricated bottom plates 2 in the rest positions are installed according to the same process;

step seven: as shown in fig. 10, pouring and maintaining the cast-in-place layer concrete of the middle and long rib prefabricated bottom plate 2 and the structural beam 13 in the sixth step, dismantling the screw cap 6, the fan-shaped top plate 7 and the detachable angle steel 4 and recycling the concrete in time after the strength of the concrete reaches the design requirement and the loading of the upper layer load is finished, wherein the screw cap, the fan-shaped top plate and the detachable angle steel can be recycled, and the screw 5 is cut off after the recycling is finished.

Example two:

in this embodiment, another hoisting structure for a long and medium-rib prefabricated bottom plate is provided, in the first embodiment, the long and medium-rib prefabricated bottom plate 2 is replaced by a rib and key combined prefabricated bottom plate 14, shear keys 22 are further respectively provided at two ends of the long and medium rib 21, the hoisting rings are provided between the long and medium rib 21 and the shear keys 22, and i-shaped members 15 are provided on the long and medium rib 21 and the shear keys 22, specifically, as shown in fig. 1, 2, 3, 4, 6, 7, 10, 11, 12, and 13, in a corresponding construction method of the structure:

in the third step of the first embodiment, the lifting ring 1 is placed at a preset position between rib keys of the rib key combination prefabricated bottom plate 14 before concrete is not poured;

in the fourth step of the first embodiment, concrete is poured on the rib and key combined prefabricated bottom plate 14 with the hanging ring 1, and surface smoothing and galling treatment are performed on the rib and key combined prefabricated bottom plate 14, so that the rough concave-convex depth of the surface of the rib and key combined prefabricated bottom plate is not less than 4mm, when the strength requirement is met, the template is removed (when the strength of the test block under the same condition reaches 75% of the designed concrete cube compressive strength), and the rib and key combined prefabricated bottom plate 14 with the hanging ring 1 is obtained;

the fourth step of the first embodiment further includes that the rib key combination prefabricated bottom plate 14 with the hanging ring 1 in the fourth step is transported to a preset position of a construction site, as shown in fig. 11, an i-shaped part 15 is installed, the i-shaped part 15 is long-strip-shaped, two ends of the i-shaped part 15 are respectively lapped on the shear keys 22 at two ends of the long and medium rib 21 and completely covers the shear keys 22 and the long and medium rib 21, bolt holes are formed in the fixed connection positions of the i-shaped part 15, the shear keys 22 and the long and medium rib 21, and bolts are inserted into the bolt holes, so that the i-shaped part 15 is fixedly installed above the shear keys 22 and the long and medium rib 21.

In the fifth step of the first embodiment, as shown in fig. 12, the steel pipe 3 is threaded through the lifting ring 1, then the gasket 11 is attached to the semicircular hole 9 of the steel pipe 3, the steel wire rope 10 is threaded through the semicircular hole 9, and finally the rib and key combination prefabricated bottom plate 14 is lifted to the specified position on the detachable angle steel 4 in the second step by using a tower crane for installation. The semicircular hole 9 of the steel pipe 3 is placed in a semicircular mode upwards. The gap between the steel pipe 3 and the lifting ring 1 can be tightly propped by a wood wedge, so that the steel pipe 3 and the lifting ring 1 cannot slide relatively;

in the sixth step of the first embodiment, as shown in fig. 13, after the rib and key combination prefabricated bottom plate 14 is installed in the fifth step, the steel wire rope 10 and the steel pipe 3 are removed and timely recovered for repeated use, and after the recovery, the rib and key combination prefabricated bottom plate 14 in the remaining position is installed according to the same process;

the other specific steps and processes are unchanged from the embodiment. This embodiment is applicable to the larger span building panel structure.

Example three:

the embodiment provides another hoisting structure for a middle-long rib prefabricated bottom plate, the middle-long rib prefabricated bottom plate 2 in the first embodiment is replaced by a ribbed steel bar truss prefabricated bottom plate 16, and the hoisting ring 1 is eliminated, the middle-long rib prefabricated bottom plate 2 comprises a plate body structure, a plurality of steel bar trusses 23 are distributed on the upper end face of the plate body structure in parallel at equal intervals, a middle-long rib 21 is arranged between every two adjacent steel bar trusses 23, so that the steel bar trusses 23 and the middle-long rib 21 are arranged alternately, a tubular element is arranged below the steel bar trusses 23 in a penetrating mode, and a hoisting rope is sleeved on the tubular element. Specifically, as shown in fig. 1, 2, 3, 4, 6, 7, 10, 14, 15, and 16:

the third step of the first embodiment is eliminated, and the fourth step is performed after the second step. In the fourth step of the first embodiment, concrete is poured into the ribbed steel bar truss prefabricated bottom plate 16, and surface smoothing and roughening treatment are performed on the ribbed steel bar truss prefabricated bottom plate. So that the depth of the rough concave-convex part on the surface is not less than 4mm, when the strength requirement is met, the template is removed (when the strength of the test block is maintained under the same condition to reach 75% of the designed concrete cube compressive strength), and the prefabricated bottom plate 16 of the ribbed steel bar truss 23 shown in figure 14 is obtained;

in the fifth step of the first embodiment, the prefabricated bottom plate 16 of the ribbed steel bar truss 23 in the fourth step is transported to a preset position of a construction site, as shown in fig. 15, the steel pipe 3 passes through the steel bar truss 23, then the gasket 11 is added in the semicircular hole 9 of the steel pipe 3, the steel wire rope 10 passes through the semicircular hole 9, and finally the prefabricated bottom plate 16 of the ribbed steel bar truss is lifted to a specified position on the detachable angle steel 4 in the second step by using a tower crane for installation. The semicircular hole 9 of the steel pipe 3 is placed in a semicircular mode upwards.

In the sixth step of the first embodiment, as shown in fig. 16, after the ribbed steel bar truss prefabricated bottom plate 16 is installed in the sixth step, the steel wire rope 10 and the steel pipe 3 are removed and timely recovered, and can be used repeatedly, and after the recovery is completed, the ribbed steel bar truss prefabricated bottom plate 16 in the rest position is installed according to the same process;

the other specific steps and processes are unchanged from the embodiment. The embodiment simplifies the construction process and accelerates the progress of the construction site.

Example four:

in another prefabricated bottom plate hoisting structure with medium and long ribs provided by the embodiment, the fan-shaped top sheet 77 in the first embodiment is replaced by the circular top sheet 17. Specifically, as shown in fig. 1, 2, 5, 6, 7, 8, 9, 10, 17, and 18:

in the second step of the first embodiment, as shown in fig. 17, the detachable angle iron 4 is hung on the embedded screw 5 of the structural beam 13 put into use in the construction site, and the annular top plate 17 is placed so that the flange upper surface of the detachable angle iron 4 is flush with the concrete upper surface of the structural beam 13. After the three annular top sheets 17 are installed, the screw cap 6 is screwed down to enable the detachable angle steel 4 to be tightly attached to the structural beam 13;

specifically, the radius of the inner ring of the annular top sheet 17 is the same as that of the screw 5, five groups of different outer ring radii are provided, and the difference between each group is 2 mm. According to the requirements of actual working conditions on site, the circular top plates 17 with different outer ring radiuses are selected to be placed to enable the upper surfaces of the flanges of the detachable angle iron 4 to be flush with the upper surface of the concrete of the structural beam 13.

The other specific steps and processes are unchanged from the embodiment.

Further, the shape of the top plate can be reasonably changed by an operator according to the actual situation on site, and only the fan-shaped, circular ring-shaped and rectangular top plate shown in fig. 3 and 18 is provided as a reference in the scheme.

Example five:

in another hoisting structure for a prefabricated bottom plate with long and medium ribs provided by this embodiment, the screw rod 5 and the nut 6 in the first embodiment are replaced by a screw rod 19 with a nut and a threaded sleeve 20. Specifically, as shown in fig. 2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 19, 20, and 21:

in the first step of the first embodiment, as shown in fig. 19 and 20, a threaded sleeve 20 is pre-embedded at a predetermined position of the structural beam 13 before concrete is not poured, and after pre-embedding is completed, the structural beam 13 with the pre-embedded threaded sleeve 20 is processed and manufactured and is put into a construction site for use;

in the second step of the first embodiment, as shown in fig. 21, the screw 19 with the nut is threaded through the detachable angle iron 4 and the fan-shaped top plate 7, and screwed into the threaded sleeve 20, so as to adjust the angle of the fan-shaped top plate 7, and after the upper surface of the flange of the detachable angle iron 4 is flush with the concrete upper surface of the structural beam 13, the screw 19 with the nut is screwed, so that the detachable angle iron 4 is tightly attached to the structural beam 13;

in the seventh step of the first embodiment, as shown in fig. 10, the cast-in-place layer concrete of the middle and long rib prefabricated bottom plate 2 and the structural beam 13 in the sixth step is poured and maintained, and after the strength of the concrete reaches the design requirement and the upper layer load is loaded, the screw 19 with the nut, the fan-shaped top plate 7 and the detachable angle steel 4 are removed and recovered in time, so that the concrete can be recycled.

The other specific steps and processes are unchanged from the embodiment.

The force transmission mechanism of the utility model is as follows:

in the construction and hoisting stage of the medium-long rib prefabricated base plate 2, the dead load of the medium-long rib prefabricated base plate 2 is transmitted to the additional steel pipe 3 through the three pairs of embedded hanging rings, and then the steel pipe 3 effectively transmits the tensile force to the lifting hook through the wall of the steel pipe 3 and the additional gasket 11. The additional steel pipe 3 increases the height of the material in the short side direction of the middle-long rib prefabricated bottom plate 2, improves the bending resistance, and the gasket 11 added between the wall of the steel pipe 3 and the lifting hook converts the concentrated force into the uniform force, thereby reasonably avoiding the buckling deformation of the local part of the steel pipe 3 caused by overlarge stress.

The splicing process of the middle-long rib prefabricated bottom plate 2 and the structural beam 13 of the assembly type building is that the detachable angle steel 4 passes through the embedded screw 5 on the structural beam 13, then the top plate is added to adjust the upper surface of the flange of the detachable angle steel 4 to be flush with the concrete upper surface of the structural beam 13, then the screw cap 6 is screwed, and finally the prefabricated bottom plate is placed on the flange of the detachable angle steel 4. Through pre-burying the screw rod 5 in the beam and adopting the angle steel external member 8, the plate end of the medium-long rib prefabricated bottom plate 2 is fixed on the structural beam 13, and the plate bottom support is cancelled, so that the manufacturing cost is saved. The nuts 6 are screwed up to enable the detachable angle steel 4 with the full length to be tightly attached to the structural beam 13, the shear stress of the middle-long rib prefabricated base plate 2 can be effectively transmitted, and the middle-long rib prefabricated base plate 2 and the load on the middle-long rib prefabricated base plate are uniformly transmitted to the structural beam 13 through the contact surface of the detachable angle steel 4 and the structural beam 13 and the embedded screw rods 5.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the utility model without departing from the spirit and scope of the utility model, which is to be covered by the claims.

Claims (9)

1. The utility model provides a prefabricated bottom plate hoisting structure of well long rib which characterized in that: the method comprises the following steps: the structure roof beam that sets up side by side, the overlap joint of structure roof beam upper portion has the prefabricated bottom plate of well long rib the structure roof beam is provided with on the terminal surface reason each other and can dismantle the angle steel, can dismantle one side of angle steel terminal surface laminate in the terminal surface of structure roof beam, another side terminal surface laminate of dismantling the angle steel in terminal surface under the prefabricated bottom plate of well long rib, can dismantle the angle steel be provided with be used for with can dismantle the tight structure in top that angle steel and well long rib prefabricated bottom plate closely laminated, well long rib prefabricated bottom plate up end is provided with hoisting structure.

2. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: the prefabricated bottom plate with the medium-long ribs comprises a plate body structure, wherein a plurality of medium-long ribs are distributed on the upper end face of the plate body structure in an equidistant and parallel mode, lifting rings are arranged at two ends of each medium-long rib respectively, a tubular piece is inserted into each lifting ring, and a lifting rope is sleeved on each tubular piece.

3. The hoisting structure for the medium-length rib prefabricated bottom plates, according to claim 2, is characterized in that: shear keys are further arranged at two ends of the middle and long rib respectively, the hanging rings are arranged between the middle and long rib and the shear keys, and I-shaped parts are arranged on the middle and long rib and the shear keys.

4. The hoisting structure for the medium-length rib prefabricated bottom plates, according to claim 2, is characterized in that: the lower part of the tubular piece is also provided with a semicircular hole, a gasket is arranged on the semicircular hole pad, and the lifting rope is lapped on the gasket to hoist the middle-long rib prefabricated bottom plate.

5. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: the prefabricated bottom plate with the medium and long ribs comprises a plate body structure, wherein a plurality of steel bar trusses are distributed on the upper end face of the plate body structure in an equidistant and parallel mode, the medium and long ribs are arranged between two adjacent steel bar trusses, so that the steel bar trusses and the medium and long ribs are arranged alternately, a tubular piece is arranged below the steel bar trusses in a penetrating mode, and a lifting rope is sleeved on the tubular piece.

6. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: the screw rods are preset on the end faces, facing each other, of the structural beams, mounting holes are formed in the joint end faces of the detachable angle steels and the structural beams in a penetrating mode, the screw rods penetrate through the mounting holes, and nuts are screwed at the end portions, penetrating through the mounting holes, of the end portions, at one ends of the screw rods.

7. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: threaded sleeves are preset on the end faces, facing each other, of the structural beams, mounting holes are formed in the detachable angle steel and the joint end faces of the structural beams in a penetrating mode, and threaded rods with nuts are inserted in the bolt sleeves and the mounting holes.

8. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: the utility model discloses a concrete that the roof beam is prefabricated to well long rib, the roof beam up end extends to the external parallel arrangement of roof beam and is provided with a plurality of U-shaped stirrup, the prefabricated bottom plate orientation of well long rib the structure roof beam both sides terminal surface extends to the outside parallel arrangement of bottom plate and has many to take the muscle, take the muscle overlap joint in the U-shaped stirrup, through the structure roof beam with the concrete that well long rib prefabricated bottom plate up end was pour is even as an organic whole.

9. The hoisting structure for the medium-length rib prefabricated bottom plates as claimed in claim 1, wherein: the jacking structure is a fan-shaped top plate, or a circular top plate, or a rectangular top plate.

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