CN212336470U

CN212336470U - Anti structure that floats of hollow superstructure of cast in situ concrete jumbo size mandrel

Info

Publication number: CN212336470U
Application number: CN202021258931.9U
Authority: CN
Inventors: 周建荣; 周慧杰; 周慧慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-12
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a hollow superstructure of cast in situ concrete jumbo size mandrel anti-floating structure, including template and support, the template top is provided with upper reinforcing bar net and lower floor's reinforcing bar net, be provided with a plurality of mandrel between upper reinforcing bar net and the lower floor's reinforcing bar net, be provided with anti-floating reinforcing bar between upper reinforcing bar net and the mandrel, anti-floating reinforcing bar keeps flat on a plurality of mandrel, all be provided with the pole setting between the adjacent mandrel, pole setting and anti-floating reinforcing bar perpendicular setting of each other, pole setting one end has the setting element to anti-floating reinforcing bar orientation extension, the other end has the screw thread end to the extension of template orientation, be provided with the split heads muscle on the pole setting outer wall, a plurality of thru hole has been seted up in the template, a plurality of thru hole all with a. The utility model provides an among the prior art big chi core mould hollow superstructure structure consume a large amount of manual works in construction come-up and traditional construction technology and be used for the fixed problem that reaches the iron wire clearance of mandrel.

Description

Anti structure that floats of hollow superstructure of cast in situ concrete jumbo size mandrel

Technical Field

The utility model relates to a hollow superstructure construction equipment technical field of jumbo size mandrel specifically is an anti structure of floating of hollow superstructure of cast in situ concrete jumbo size mandrel.

Background

In recent years, concrete hollow floor systems are increasingly applied due to the advantages of light dead weight, good integrity, large section bending modulus, large span, flat and attractive plate bottom, convenience in equipment installation, good sound insulation, heat insulation and heat preservation performance, capability of effectively reducing comprehensive construction cost and the like. In the prior art, during the construction of the cast-in-place concrete hollow floor slab, the concrete can flow to cause the core mould of the hollow slab to float, so that the thickness of the floor slab is uneven, the construction quality is affected, and the technical problem in the construction field is solved. Particularly, when the hollow floor is cast with concrete, the self weight of the large-size inner mold is light, and great buoyancy can be generated, so that the construction quality of the hollow floor can be ensured only by preventing the platform core mold from floating upwards. According to the traditional fixing method, iron wires penetrate through the formwork and are fixed on the formwork keels or the steel pipe scaffold on the lower portion of the formwork, the buoyancy resistance provided by the formwork single hole is limited, a large number of holes need to be formed in the bottom formwork, and the engineering quality is affected due to the fact that slurry leaks easily from a large number of hole portions. Meanwhile, after the later-stage formwork is dismantled, a large amount of workers are needed to treat iron wires exposed at the bottom of the concrete slab, and the phenomenon of rust return is easy to occur after coating construction, so that the later-stage use function is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a hollow superstructure of cast in situ concrete jumbo size mandrel anti-floating structure consumes a large amount of manual works in construction come-up and traditional construction technology and is used for the fixed problem that reaches the iron wire clearance of mandrel for solving among the prior art hollow superstructure structure of large-scale mandrel.

In order to achieve the above purpose, the utility model provides an anti-floating structure of cast-in-place concrete large-size core-die hollow floor, which comprises a die plate and a bracket for supporting the die plate, wherein an upper layer reinforcing mesh and a lower layer reinforcing mesh are arranged above the die plate, a plurality of core dies are arranged between the upper layer reinforcing mesh and the lower layer reinforcing mesh, a plurality of core dies are transversely arranged on the lower layer reinforcing mesh, anti-floating reinforcing steel bars are arranged between the upper layer reinforcing mesh and the core dies, the anti-floating reinforcing steel bars are flatly arranged on a plurality of core dies, the anti-floating reinforcing steel bars, the upper layer reinforcing mesh and the lower layer reinforcing mesh are arranged in parallel, a vertical rod is arranged between the adjacent core dies, the vertical rod and the anti-floating reinforcing steel bars are arranged vertically, one end of the vertical rod extends towards the anti-floating reinforcing steel bars to be provided with a positioning piece for positioning the anti-, the novel steel bar formwork comprises a formwork and is characterized in that a split heads rib used for abutting against the formwork and connected with a lower layer steel bar mesh is arranged on the outer wall of the upright rod, a plurality of through holes are formed in the formwork and correspond to the upright rods one to one, and connecting pieces used for being connected with the upright rods are detachably arranged on the through holes.

The technical scheme is adopted, and the method has the advantages that: the split heads of the vertical rods are abutted against the template, the split heads are connected with the lower layer reinforcing mesh through iron wires or binding bands, the vertical rod positioning piece is arranged and used for positioning the anti-floating reinforcing steel bars and the upper layer reinforcing mesh, so that the anti-floating reinforcing steel bars, the upper layer reinforcing mesh and the lower layer reinforcing mesh are combined through the vertical rods to form a complete anti-floating structure, and the core mold arranged between the upper layer reinforcing mesh and the lower layer reinforcing mesh is positioned by the complete anti-floating structure, so that when concrete is poured, the core mold is positioned by the complete anti-floating structure, and the phenomenon of core mold floating is avoided; compared with the prior construction technology, the utility model not only can effectively solve the floating problem of the cast-in-place concrete hollow floor core mold, but also can solve the problems that a large amount of iron wires are left in the structure after the template is removed, the investment cost of the exposed iron wires is high after post-treatment, and the rust returning occurs after the coating decoration construction; meanwhile, through holes and connecting pieces in the technology are arranged, so that an operator only needs to arrange some through holes on the template without arranging a large number of holes on the template, the number of the through holes is less than that of the holes arranged in the prior art, the through holes correspond to the positions between the two core molds, the connecting pieces in the through holes can be connected with the threaded ends, and the arrangement of the through holes is different from that in the prior art, so that the phenomenon of slurry leakage of the holes during concrete pouring caused by the arrangement of too many holes can be effectively avoided; in the technology, the connecting piece is detachably arranged in the through hole, so that an operator can conveniently detach the connecting piece when detaching the template, the working efficiency of post-treatment of the operator is further increased, the connecting piece is different from iron wires in the holes in the prior art, when the operator detaches the template, a large number of personnel are not needed to treat the iron wires in each hole, the phenomenon of rust return after coating construction is avoided, and the influence on the later-use function is further avoided; to sum up and to know, the utility model discloses thereby not only can effectually solve the anti problem of floating of hollow slab mandrel and guarantee construction quality, can also reduce the site loss and the manpower expenditure of main part construction and later stage equipment fixing simultaneously, have good economy and social.

The utility model discloses further set up: the connecting piece comprises a bolt sleeve, the bolt sleeve is inserted into the through hole, the length of the bolt sleeve is larger than the thickness of the template, a first threaded hole is formed in the end face, facing the lower layer of the reinforcing mesh, of the bolt sleeve, the first threaded hole is in threaded connection with the threaded end, and the two ends of the bolt sleeve penetrate out of the through hole.

The technical scheme is adopted, and the method has the advantages that: in the technology, the bolt sleeve can be used as a tool for repeated use, so that the problems that holes are formed by using iron wires to fix the template, and the iron wires are large in consumption quantity are solved; meanwhile, the phenomena that a large amount of iron wires are left in the structure after the template is removed, the investment cost of the exposed iron wires is high after the post-treatment, the rust returning occurs after the coating decoration construction and the like are solved; the utility model discloses a board bottom anti-floating fixed knot constructs has multiple use, and after the construction was accomplished, bolt sleeve isotructure can be used for equipment specialty later stage to hang the fixed of support installation simultaneously, can provide firm bearing capacity and also avoided later stage to hang the support and install the drilling hole on hollow floor and to the destruction of floor; and bolt sleeve has seted up first screw hole on the one end terminal surface towards lower floor's reinforcing bar net, and first screw hole is connected the setting with the screw thread end, and the bolt sleeve can easily be demolishd in the convenient operating personnel later stage of setting up of above-mentioned technique when demolising the template, and also can be connected bolt sleeve and pole setting smoothly when the installation of earlier stage, further accelerated the engineering progress.

The utility model discloses further set up: the outer diameter of the bolt sleeve is equal to or slightly smaller than the diameter of the through hole.

The technical scheme is adopted, and the method has the advantages that: the outer diameter of the bolt sleeve is equal to or slightly smaller than the diameter of the through hole, so that the through hole is prevented from greatly leaking during grouting, and the construction quality is further prevented from being influenced.

The utility model discloses further set up: be provided with the cell type backing plate between support and the template, the cell type backing plate is including being used for pressing the diaphragm on advancing the support terminal surface and setting up the supporting leg in the diaphragm both sides, the supporting leg is supported towards the one end that the template direction extends and is detained on the template outer wall, diaphragm center department runs through there is the trompil, wear to be equipped with fixing bolt on the trompil, bolt sleeve has seted up the second screw hole on the one end terminal surface of support, fixing bolt one end penetrate the second screw hole and with second screw hole threaded connection, the other end passes the trompil and rotates the setting in the trompil along the trompil axial.

The technical scheme is adopted, and the method has the advantages that: the anti ability of floating of the further increase of setting up of cell type backing plate above-mentioned structure ensures that the mandrel can not appear the come-up phenomenon at the grout in-process, and cell type backing plate and the very big joint strength between pole setting and the lower floor's reinforcing bar net that has increased of split heads muscle combination, ensures that upper reinforcing bar net, anti reinforcing bar that floats and lower floor's reinforcing bar net can make up through the pole setting and fix a position the mandrel between upper reinforcing bar net and lower floor's reinforcing bar net, further ensures that the come-up phenomenon can not appear at the grout in-process of mandrel.

The utility model discloses further set up: the transverse plate is provided with two stiffening ribs, the two stiffening ribs are respectively positioned on two sides of the end surface of the transverse plate, one end of each stiffening rib is connected with the end surface of the transverse plate, and the other end of each stiffening rib is connected with the outer wall of each supporting leg.

The technical scheme is adopted, and the method has the advantages that: the arrangement of the stiffening ribs further increases the connection strength between the groove-shaped base plate and the end face of the bracket.

The utility model discloses further set up: and one end of the bolt sleeve, which faces the end face of the support, is a flat arc head.

The technical scheme is adopted, and the method has the advantages that: the one end of bolt sleeve towards the support terminal surface is flat arc head, and is unanimous with spanner specification commonly used, can twist bolt sleeve smoothly when making things convenient for later stage operating personnel to tear open the template, further quickening the engineering progress, and avoid a large amount of manpower losses.

The utility model discloses further set up: the setting element includes horizontal short muscle, horizontal short muscle is located between upper steel wire net and the anti reinforcing bar that floats, be connected through iron wire or ligature area between horizontal short muscle and upper steel wire net and the anti reinforcing bar that floats.

The technical scheme is adopted, and the method has the advantages that: the horizontal short rib is connected through iron wire or ligature area between with upper wire net and the anti reinforcing bar that floats, and the very big increase of setting up of this technique the joint strength between pole setting and upper wire net and the anti reinforcing bar that floats ensures that upper reinforcing bar net, anti reinforcing bar that floats and lower floor reinforcing bar net can make up through the pole setting and fix a position the mandrel between upper reinforcing bar net and lower floor reinforcing bar net, further ensures that the upward floating phenomenon can not appear at the mandrel in the grout in-process.

The utility model discloses further set up: and a gap of 5 mm is reserved between the threaded end of the vertical rod and the template.

The technical scheme is adopted, and the method has the advantages that: a gap of 5 mm is reserved between the threaded end of the vertical rod and the template, so that later decoration and trowelling are facilitated.

The utility model discloses further set up: the anti-floating reinforcing steel bar is welded with a plurality of positioning ribs for fixing the core mold in a lateral positioning mode, the positioning ribs are arranged in a U shape, and the tail ends of the positioning ribs and the lower-layer reinforcing steel bar net are fixed through iron wires or binding bands.

The technical scheme is adopted, and the method has the advantages that: the anti-floating reinforcing steel bars are welded with a plurality of positioning ribs for fixing the mandrel in a side positioning mode, the positioning ribs are arranged to ensure that the mandrel cannot float between the anti-floating reinforcing steel bars and the lower-layer reinforcing mesh, and the anti-floating capacity is further improved.

Drawings

FIG. 1 is a schematic view of the present invention showing anti-floating;

fig. 2 is a schematic view of the structure of the vertical rod of the present invention;

fig. 3 is a simple and easy schematic diagram of the middle positioning rib structure of the present invention.

Detailed Description

The utility model provides a 3 hollow superstructure anti structures of floating of jumbo size mandrel of cast in situ concrete, include template 1 and the support 2 that is used for supporting

template

1, 1 top in template is provided with upper reinforcing bar net 11 and lower floor's reinforcing bar net 12, be provided with a plurality of mandrel 3, a plurality of between upper reinforcing bar net 11 and the lower floor's reinforcing bar net 12 mandrel 3 transversely arranges on lower floor's reinforcing bar net 12, its characterized in that: anti-floating steel bars 4 are arranged between the upper layer steel bar mesh 11 and the core die 3, the anti-floating steel bars 4 are flatly arranged on a plurality of core dies 3, the anti-floating steel bars 4, the upper layer steel bar mesh 11 and the lower layer steel bar mesh 12 are arranged in parallel, upright rods 5 are arranged between the adjacent core dies 3, the upright rods 5 and the anti-floating steel bars 4 are arranged vertically, one ends of the upright rods 5 extend towards the anti-floating steel bars 4 to form positioning parts for positioning the anti-floating steel bars 4 and the upper layer steel bar mesh 11, the other ends extend towards the direction of the template 1 to form plates 1 to form threaded ends 51, the outer walls of the upright rods 5 are provided with split heads 52 which are abutted against the template 1 and connected with the lower layer steel bar mesh 12, the template 1 is provided with a plurality of through holes 13, the through holes 13 are respectively corresponding to the upright rods 5, and connecting pieces which are detachably arranged on the through holes 13, the connecting piece comprises a bolt sleeve 6, the bolt sleeve 6 is inserted into the through hole 13, the length of the bolt sleeve 6 is larger than the thickness of the template 1, a first threaded hole 61 is formed in one end face of the bolt sleeve 6 facing the lower layer reinforcing mesh 12, the first threaded hole 61 is in threaded connection with the threaded end 51, two ends of the bolt sleeve 6 penetrate through the through hole 13, the outer diameter of the bolt sleeve 6 is equal to or slightly smaller than the diameter of the through hole 13, a groove-shaped base plate 7 is arranged between the support 2 and the template 1, the groove-shaped base plate 7 comprises a transverse plate 71 used for being pressed on the end face of the support 2 and supporting legs 72 arranged on two sides of the transverse plate 71, one end of each supporting leg 72 extending towards the direction of the template 1 is abutted against the outer wall of the template 1, a hole 711 is formed in the center of the transverse plate 71, a fixing bolt 73 is arranged on the hole, and a second threaded hole 62 is formed in, fixing bolt 73 one end penetrates second screw hole 62 and with second screw hole 62 threaded connection, the other end passes trompil 711 and rotates along trompil 711 axial and sets up in trompil 711, be provided with two stiffening ribs 8 on the diaphragm 71, two stiffening ribs 8 are located diaphragm 71 terminal surface both sides respectively, stiffening rib 8 one end and diaphragm 71 end-to-end connection, the other end and supporting leg 72 outer wall connection, the one end of bolt sleeve 6 towards support 2 terminal surface is flat arc head, the setting element includes horizontal short muscle 9, horizontal short muscle 9 is located between upper steel wire net and anti-floating reinforcement 4, pass through iron wire or ligature area connection between horizontal short muscle 9 and the upper steel wire net and the anti-floating reinforcement 4, leave the clearance of 5 millimeters between the screw end 51 of pole setting 5 and template 1, the welding has a plurality of location muscle 41 that is used for the fixed of mandrel 3 lateral positioning on the anti-floating reinforcement 4, the positioning bar 41 is arranged in a U shape, and the tail end of the positioning bar 41 is fixed with the lower layer reinforcing mesh 12 through an iron wire or a binding band.

Firstly, an operator installs a template 1 on a bracket 2; then, marking lines to determine the positions of the ribs and the lower layer reinforcing mesh 12, and binding the lower layer reinforcing mesh 12; then, an operator carries out alignment on the core mold 3, and positioning and punching are carried out on the template 1 according to the positions of the core mold 3 and the ribs of the hollow slab; then an operator installs the upright stanchion 5, the upright stanchion 5 with the transverse short ribs 9 and the split heads ribs 52 is connected with the bolt sleeve 6 and then aligned with the through holes 13 on the template 1, the bolt sleeve 6 is inserted on the through holes 13, the split heads ribs 52 are pressed on the lower layer reinforcing mesh 12, the bolt sleeve 6 passes through the template 1 and then is screwed with the fixed bolts 73 through the groove-shaped backing plate 7, so that the upright stanchion 5 is tightly fixed with the template 1; pre-burying related pipelines; arranging a core mould 3 according to a layout pattern of the core mould 3, arranging at least two anti-floating steel bars 4 welded with positioning bars 41 at one quarter of the longitudinal length direction of the core mould 3 after the core mould 3 is arranged, wherein the positioning bars 41 welded on the anti-floating steel bars 4 are used for positioning the core mould 3, the transverse short bars 9 are clamped on the anti-floating steel bars 4 at the moment, the transverse short bars 9 are fixed with the anti-floating steel bars 4 through iron wires or binding bands, the upper layer steel bar net 11 is supported above the transverse short bars 9 and is connected and fixed with the transverse short bars 9 through the iron wires or the binding bands, and the upright rods 5, the anti-floating steel bars 4 and the lower layer steel bar net 12 are connected to form a framework for fixing the core mould 3; the rib parts between the lower layer reinforcing mesh 12 and the upper layer reinforcing mesh 11 are hooked tightly through tie bars; building a construction access road, and assuming a concrete pump conveying pipe; then pouring concrete after various inspections and receptions; and when the concrete is cured to meet the strength requirement, the template 1, the bolt sleeves 6, the groove-shaped base plates 7 and the fixing bolts 73 are removed.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, but only by the principle of the present invention, and the present invention can be modified without departing from the spirit and scope of the present invention, and all of the modifications and improvements fall within the scope of the present invention.

Claims

1. The utility model provides an anti structure of floating of hollow superstructure of cast in situ concrete jumbo size mandrel, includes the template and is used for supporting the support of template, the template top is provided with upper reinforcing bar net and lower floor's reinforcing bar net, be provided with a plurality of mandrel, a plurality of between upper reinforcing bar net and the lower floor's reinforcing bar net the mandrel transversely arranges on lower floor's reinforcing bar net, its characterized in that: the steel bar net structure is characterized in that anti-floating steel bars are arranged between the upper layer steel bar net and the core die, the anti-floating steel bars are flatly placed on the core dies, the anti-floating steel bars, the upper layer steel bar net and the lower layer steel bar net are arranged in parallel, a vertical rod is arranged between the adjacent core dies and perpendicular to the anti-floating steel bars, one end of the vertical rod extends towards the anti-floating steel bars to form a positioning piece for positioning the anti-floating steel bars and the upper layer steel bar net, the other end of the vertical rod extends towards the template to form a threaded end, a split heads which are used for abutting against the template and connected with the lower layer steel bar net are arranged on the outer wall of the vertical rod, a plurality of through holes are formed in the template and correspond to the vertical rods one to one, and connecting pieces used for being.

2. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 1, wherein: the connecting piece comprises a bolt sleeve, the bolt sleeve is inserted into the through hole, the length of the bolt sleeve is larger than the thickness of the template, a first threaded hole is formed in the end face, facing the lower layer of the reinforcing mesh, of the bolt sleeve, the first threaded hole is in threaded connection with the threaded end, and the two ends of the bolt sleeve penetrate out of the through hole.

3. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 2, wherein: the outer diameter of the bolt sleeve is equal to or slightly smaller than the diameter of the through hole.

4. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 2, wherein: be provided with the cell type backing plate between support and the template, the cell type backing plate is including being used for pressing the diaphragm on advancing the support terminal surface and setting up the supporting leg in the diaphragm both sides, the supporting leg is supported towards the one end that the template direction extends and is detained on the template outer wall, diaphragm center department runs through there is the trompil, wear to be equipped with fixing bolt on the trompil, bolt sleeve has seted up the second screw hole on the one end terminal surface of support, fixing bolt one end penetrate the second screw hole and with second screw hole threaded connection, the other end passes the trompil and rotates the setting in the trompil along the trompil axial.

5. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 4, wherein: the transverse plate is provided with two stiffening ribs, the two stiffening ribs are respectively positioned on two sides of the end surface of the transverse plate, one end of each stiffening rib is connected with the end surface of the transverse plate, and the other end of each stiffening rib is connected with the outer wall of each supporting leg.

6. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 2, wherein: and one end of the bolt sleeve, which faces the end face of the support, is a flat arc head.

7. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 1, wherein: the setting element includes horizontal short muscle, horizontal short muscle is located between upper steel wire net and the anti reinforcing bar that floats, be connected through iron wire or ligature area between horizontal short muscle and upper steel wire net and the anti reinforcing bar that floats.

8. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 1, wherein: and a gap of 5 mm is reserved between the threaded end of the vertical rod and the template.

9. The cast-in-place concrete large-size core mold hollow floor anti-floating structure as claimed in claim 1, wherein: the anti-floating reinforcing steel bar is welded with a plurality of positioning ribs for fixing the core mold in a lateral positioning mode, the positioning ribs are arranged in a U shape, and the tail ends of the positioning ribs and the lower-layer reinforcing steel bar net are fixed through iron wires or binding bands.