CN113653260B - Construction method of sleeve type thinning stirrup structure superposed beam - Google Patents
Construction method of sleeve type thinning stirrup structure superposed beam Download PDFInfo
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- CN113653260B CN113653260B CN202111096990.XA CN202111096990A CN113653260B CN 113653260 B CN113653260 B CN 113653260B CN 202111096990 A CN202111096990 A CN 202111096990A CN 113653260 B CN113653260 B CN 113653260B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
Abstract
The invention discloses a construction method of a sleeve type thinning stirrup structure superposed beam, wherein a superposed beam floor structure comprises a prefabricated superposed beam and a prefabricated superposed slab, and the prefabricated superposed beam comprises a combined type closed stirrup structure, thinning type common stirrups, lower longitudinal reinforcements and upper longitudinal reinforcements; the combined closed stirrup structure comprises a lower stirrup section, a middle positioning sleeve section and an upper stirrup section, wherein the middle positioning sleeve section comprises an upper connecting pipe part, a middle tightening pipe part and a lower threaded pipe part; the installation of the novel precast beam framework is completed by connecting the combined closed stirrup structure, the seedling type common stirrups, the lower longitudinal bars and the upper longitudinal bars in a matched manner, the sleeve type superposed beam floor structure construction method is used in the matched manner during installation, and sleeve extrusion machines with novel structures are used in a matched manner. The sleeve type superposed beam floor structure is novel, the construction method is safe, the constructed superposed beam floor structure is stable, the structure and the construction method are novel, and creativity is high.
Description
Technical Field
The invention relates to the field of building construction, in particular to a construction method of a sleeve type thinning stirrup structure composite beam.
Background
In the floor structure in the field of existing building construction, assembled reinforced concrete beam slabs, namely commonly used laminated beam slab floor structures, are widely adopted. Adopt superposed beam floor structure, can alleviate the weight of assembly member, the reduction of erection time, less pollution, the hoist and mount of being more convenient for, simultaneously because there is the existence of post-cast concrete, the wholeness of its structure is also better relatively. For the existing superposed beam floor structure, concrete is poured and tamped twice, and a precast beam and a precast slab are manufactured in a precast yard for the first time; and secondly, the construction is carried out on the construction site, and after the precast beam and the precast slab are hoisted and placed, the concrete on the upper part is poured and tamped to be connected into a whole.
Before concrete is poured and tamped for the second time, the precast beam and the precast slab are placed on a construction site, the precast beam in the prior art is generally in an integrally closed stirrup structure, and when the precast slab is placed on the precast beam, an outward extending longitudinal rib of the precast slab is easy to collide with the closed stirrup structure and an upper longitudinal rib of the precast beam, so that the whole precast slab is difficult to place. In order to solve the problem of installation difficulty among the prior art, change closed stirrup structure into steel wire ligature's combination formula closed stirrup, but because steel wire ligature process is longer, and after the steel wire ligature, its whole stirrup structure's intensity is lower moreover for the holistic efficiency of construction step-down of composite beam floor structure has the risk that structural security is poor moreover.
Disclosure of Invention
The invention aims to provide a construction method of a sleeve type thinning stirrup structure superposed beam, which is simple, convenient and stable to install, safer and more reliable in structure, free of collision between an overhanging longitudinal rib of a prefabricated plate and a stirrup and an upper longitudinal rib of the beam during installation, quick to install and high in efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a construction method of a sleeve type thinning stirrup structure composite beam comprises the steps that a composite beam floor structure comprises a prefabricated composite beam and a prefabricated composite slab, and the prefabricated composite beam comprises a combined type closed stirrup structure, thinning type common stirrups, lower longitudinal reinforcements and upper longitudinal reinforcements; the combined closed stirrup structure comprises a lower stirrup section, a middle positioning sleeve section and an upper stirrup section, wherein the middle positioning sleeve section comprises an upper connecting pipe part, a middle tightening pipe part and a lower threaded pipe part, and the middle positioning sleeve section is matched with a sleeve extruder;
the construction method comprises the following steps:
step one, at least two upper longitudinal ribs are supported on a binding bracket;
step two, sleeving a plurality of thinning type common stirrups into the upper longitudinal bars;
thirdly, a plurality of thinning type common stirrups are arranged in parallel at intervals longitudinally; longitudinally arranging at least two lower longitudinal bars at the inner sides of a plurality of thinning type common stirrups, and binding the lower stirrup sections by using steel wires;
step four, binding or welding the common stirrups and the upper and lower longitudinal bars to form an initial skeleton;
step five, connecting the middle positioning sleeve sections with the end parts of the U-shaped lower stirrup sections in a threaded manner, wherein each lower stirrup section is matched with two middle positioning sleeve sections;
step six, inserting the inverted U-shaped upper stirrup section into two adjacent middle positioning sleeve sections, and applying certain pressure on the upper stirrup section after insertion so that the upper stirrup section is fittingly clamped to the middle positioning sleeve sections;
step seven, using enough steel wires to enable the lower hooping sections to be bound and connected with the lower longitudinal bars, and using a small amount of steel wires to enable the upper hooping sections to be bound and connected with the upper longitudinal bars, so as to form a second-stage framework;
step eight, erecting a template of the prefabricated superposed beam, performing first concrete pouring on the superposed beam, and forming the prefabricated superposed beam after final setting;
synchronously processing the prefabricated composite slabs in the prefabricated processing factory, transporting the prefabricated composite beams and the prefabricated composite slabs to a construction site by using a transport vehicle, and positioning and installing the composite beams;
step ten, splitting an upper stirrup section and an upper longitudinal bar of the prefabricated composite beam, wherein the upper stirrup section is separated from the middle positioning sleeve section;
step eleven, using hoisting equipment to perform barrier-free installation and positioning on the prefabricated composite slab to the prefabricated composite beam;
step twelve, secondarily installing an upper stirrup section and an upper longitudinal bar; the lower part of the upper stirrup segment is inserted into the upper parts of the upper connecting pipe part and the middle tightening pipe part again;
step thirteen, a sleeve extruding machine is used for compressing and fixing the upper hoop reinforcement section and the upper parts of the upper connecting pipe part and the middle tightening pipe part, and the upper hoop reinforcement section is locked;
binding the upper stirrup section and the upper steel bar for the second time to form a final framework;
and step fifteen, integrally pouring the beam plate and overlapping the concrete.
Preferably, the lower stirrup section comprises a first lower U-shaped ribbed steel bar and first threaded rod parts, and the two first threaded rod parts are respectively connected to two upper end parts of the first lower U-shaped ribbed steel bar;
the inboard of first U-shaped ribbed steel bar is connected with the middle part and indulges the muscle, and the muscle is indulged in the middle part has a plurality ofly, and the muscle is indulged to a plurality of middle parts and is parallel to each other set up.
Preferably, the lower longitudinal bar, the middle longitudinal bar and the upper longitudinal bar are all ribbed steel bars, the number of the lower longitudinal bars is three, and the upper longitudinal bar is provided with two
Preferably, the upper connecting pipe part, the middle tightening pipe part and the lower threaded pipe part are integrally formed, the upper connecting pipe part and the lower threaded pipe part are both in a circular pipe shape, and the middle tightening pipe part is an arc pipe with a narrow middle part and wide two sides; the length of the lower threaded pipe portion is greater than that of the upper connecting pipe portion.
Preferably, the inner wall of the upper connecting pipe portion is a smooth wall surface.
Preferably, the upper stirrup section is a ribbed steel bar, and the thinning type common stirrup is a rectangular frame-shaped steel bar; the end part of the thinning-type common stirrup is in a hook shape.
Preferably, the sleeve extruder comprises a sleeving mechanism and two groups of pressing mechanisms, the two groups of pressing mechanisms are respectively connected to the front end and the rear end of the sleeving mechanism, and the two groups of pressing mechanisms are used for flattening and locking after the sleeving mechanism is sleeved on the middle positioning sleeve section.
Preferably, the sleeving mechanism comprises a first arc-shaped piece and a second arc-shaped piece, and one end of the first arc-shaped piece is connected with one end of the second arc-shaped piece through a first rotating shaft hinge assembly;
be connected with rotatory fastener on the outer wall of the other end of first arc piece, be connected with the rotational positioning pole on the outer wall of the other end of second arc piece, the one end of rotatory fastener rotates with first arc piece to be connected, has seted up the lock joint groove on another tip of rotatory fastener, and the rotational positioning pole joint is in the lock joint inslot.
Preferably, the compressing mechanism comprises a compressing arc-shaped piece, a compressing support screw and a compressing rotary handle, compressing connection threaded holes are formed in the first arc-shaped piece and the second arc-shaped piece, one end of the compressing support screw penetrates through the compressing connection threaded holes and then is connected with the compressing handle arranged between the first arc-shaped piece and the second arc-shaped piece through a first rotating bearing assembly, and the other end of the compressing support screw is connected with the compressing rotary handle.
Preferably, the outer end face of the first arc-shaped piece and the outer end face of the second arc-shaped piece are both provided with a first bearing connecting hole, and the first rotating bearing assembly is connected in the first bearing connecting hole;
compress tightly the supporting screw and include screw rod portion and set up the bearing connecting rod head at screw rod portion tip, and the bearing connecting rod head inserts back in first rotation bearing subassembly, and screw rod portion tip joint is in the outside of first bearing connecting hole.
The invention has the beneficial effects that:
the construction method of the sleeve type thinning stirrup structure superposed beam can be used for constructing the sleeve type superposed beam floor structure more quickly, safely and conveniently. Be provided with lower part stirrup section, well positioning sleeve section, upper portion stirrup section, lower part among the superposed beam floor structure and indulge muscle and upper portion and indulge the muscle, the muscle cooperation assembly is indulged to lower part stirrup section, well positioning sleeve section, upper portion stirrup section, lower part and muscle and upper portion are indulged to muscle, through the fast and stable assembly of novel sleeve extrusion machines. The sleeve type superposed beam floor structure has the advantages that the sleeve type combined closed stirrups are simple and convenient to disassemble and assemble, the rear longitudinal reinforcements of the assembled superposed beam are simple and convenient to install, the outward extending longitudinal reinforcements of the prefabricated plates basically do not collide with the stirrups of the beam during installation, the installation is rapid, the fastening performance is good, the prefabricated beams and the prefabricated plates are good in structural protection performance, and the efficacy is high.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic overall flow chart of a construction method of a sleeve-type thinning stirrup structure composite beam.
Fig. 2 is a partial structure exploded schematic view of a laminated beam floor structure.
Figure 3 is an isometric illustration of the overall structure of a composite beam floor structure.
FIG. 4 is an exploded view of a connection between a middle alignment sleeve segment and a sleeve extruder tool.
Fig. 5 is a schematic view of the overall structure of the compression support screw.
Detailed Description
The invention provides a construction method of a sleeve type thinning stirrup structure superposed beam, which is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention is described in detail below with reference to the accompanying drawings:
example 1
With reference to fig. 1 to 5, a construction method of a sleeve type thinning stirrup structure composite beam comprises the steps that a composite beam floor structure comprises a prefabricated composite beam and a prefabricated composite slab, and the prefabricated composite beam comprises a combined type closed stirrup structure, a thinning type common stirrup 101, a lower longitudinal rib 4 and an upper longitudinal rib 5; the combined closed stirrup structure comprises a lower stirrup segment 1, a middle positioning sleeve segment 2 and an upper stirrup segment 3, wherein the middle positioning sleeve segment 2 comprises an upper connecting pipe part 21, a middle tightening pipe part 22 and a lower threaded pipe part 23, and a sleeve extruder 6 is used in cooperation with the middle positioning sleeve segment 2.
The construction comprises the following steps:
step one, at least two upper longitudinal ribs are supported on a binding bracket;
step two, sleeving a plurality of thinning type common stirrups into the upper longitudinal bars;
step three, arranging a plurality of thinning-type common stirrups in a mutually parallel longitudinal interval manner; longitudinally arranging at least two lower longitudinal bars at the inner sides of a plurality of thinning type common stirrups, and binding the lower stirrup sections by using steel wires;
binding or welding the common stirrups and the upper and lower longitudinal bars to form an initial skeleton;
step five, connecting the middle positioning sleeve sections with the end parts of the U-shaped lower stirrup sections in a threaded manner, wherein each lower stirrup section is matched with two middle positioning sleeve sections;
step six, inserting the inverted U-shaped upper stirrup section into two adjacent middle positioning sleeve sections, and applying certain pressure on the upper stirrup section after insertion so that the upper stirrup section is fittingly clamped to the middle positioning sleeve sections;
step seven, using enough steel wires to enable the lower hooping sections to be bound and connected with the lower longitudinal bars, and using a small amount of steel wires to enable the upper hooping sections to be bound and connected with the upper longitudinal bars, so as to form a second-stage framework;
erecting a template of the prefabricated superposed beam, performing primary concrete pouring on the superposed beam, and forming the prefabricated superposed beam after final setting;
synchronously processing the prefabricated composite slabs in the prefabricated processing factory, transporting the prefabricated composite beams and the prefabricated composite slabs to a construction site by using a transport vehicle, and positioning and installing the composite beams;
step ten, splitting the upper stirrup section and the upper longitudinal bar of the prefabricated superposed beam, wherein the upper stirrup section is separated from the middle positioning sleeve section;
step eleven, using hoisting equipment to carry out barrier-free installation and positioning on the prefabricated composite slab to the prefabricated composite beam;
step twelve, secondary installation of the upper stirrup section and the upper longitudinal bar; the lower part of the upper stirrup segment is inserted into the upper parts of the upper connecting pipe part and the middle tightening pipe part again;
step thirteen, a sleeve extruding machine is used for compressing and fixing the upper hoop reinforcement section and the upper parts of the upper connecting pipe part and the middle tightening pipe part, and the upper hoop reinforcement section is locked;
binding the upper stirrup section and the upper steel bar for the second time to form a final framework;
and step fifteen, integrally pouring the beam plate and superposing the concrete.
Example 2
With reference to fig. 1 to 3, a floor structure is constructed using prefabricated composite beams and prefabricated composite slabs for floor construction of a certain removal cell. And processing the prefabricated composite beam and the prefabricated composite slab in a prefabricating and processing factory.
The prefabricated superposed beam comprises a thinning type common stirrup 101, a lower stirrup section 1, a middle positioning sleeve section 2, an upper stirrup section 3, a lower longitudinal rib 4 and an upper longitudinal rib 5. When processing, the mutual parallel longitudinal arrangement of a plurality of lower part stirrup sections 1 sets up, and the mutual parallel connection of muscle 4 is indulged in a plurality of lower parts is in the bottom of lower part stirrup section 1, sets up three lower part in this embodiment and indulges muscle 4, and the mutual parallel transverse arrangement of muscle is indulged to three lower part. The upper end part of the lower stirrup section 1 is provided with threads.
Well location sleeve section 2 includes upper connecting tube portion 21, well tightening pipe portion 22 and lower thread pipe portion 23, and lower thread pipe portion 23 and the upper end screwed connection of lower part stirrup section 1, and the lower tip of upper portion stirrup section 3 passes and pegs graft in the upper portion of well tightening pipe portion 22 behind upper connecting tube portion 21 to carry out the locking of pipe portion through external sleeve extrusion machines 6, upper portion is indulged muscle 5 and is connected in a plurality of upper portion stirrup sections 3 inboard and fixed through the steel wire ligature.
Lower part stirrup section 1 is the U-shaped shaft-like, and lower part stirrup section 1 includes U-shaped ribbed steel bar 11 and first screw rod portion 12 under first, and two first screw rod portions 12 are connected respectively on two upper ends of U-shaped ribbed steel bar 11 under first. When the lower stirrup section 1 is processed, the end of the lower stirrup section is tapped by using a threading machine, and then the stirrup is bent.
The inboard of first U-shaped ribbed steel bar 11 is connected with middle part and indulges muscle 13, and the muscle 13 is indulged to the middle part has a plurality ofly, and a plurality of middle parts are indulged muscle 13 and are parallel to each other setting. The number of the middle longitudinal ribs 13 in this embodiment is two.
The lower longitudinal bar 4, the middle longitudinal bar 13 and the upper longitudinal bar 5 are all ribbed steel bars, and the lower longitudinal bar 4 is welded with a first lower U-shaped ribbed steel bar 11 or is connected with the first lower U-shaped ribbed steel bar 11 through a steel wire; the middle longitudinal bar 13 is connected with the middle part of the first lower U-shaped ribbed steel bar 11 through a steel wire.
The upper connecting pipe part 21, the middle tightening pipe part 22 and the lower threaded pipe part 23 are integrally formed, the upper connecting pipe part 21 and the lower threaded pipe part 23 are both in a circular pipe shape, the radius value of the upper connecting pipe part 21 is larger than that of the lower threaded pipe part 23, and the middle tightening pipe part 22 is an arc-shaped pipe with a narrow middle part and wide two sides; each lower stirrup segment 1 is fitted with two middle positioning sleeve segments.
The inner wall of the upper connecting pipe part 21 is smooth and smooth, so that the upper stirrup can be conveniently inserted and separated. When upper portion stirrup section 3 pegged graft need locking to link firmly in last connecting tube portion 21, use the machines and tools of novel structure, the machines will go up connecting tube portion 21 and flatten the back, go up connecting tube portion 21 and the upper portion stirrup section 3 of ribbed steel bar material, the rib of ribbed steel bar can be fixed in the recess that the pipe portion extrusion formed.
The upper stirrup section 3 is in an inverted U-shaped rod shape, and the upper stirrup section 3 is a ribbed steel bar; the end of the upper stirrup section 3 can be inserted into the middle tightening tube part 22.
The sleeve extruder 6 comprises a sleeving mechanism 61 and a pressing mechanism 62, after the sleeving mechanism 61 is sleeved on the middle positioning sleeve section 2, the middle positioning sleeve section 2 is flattened and locked by the pressing mechanism 62.
The socket mechanism 61 includes a first arc-shaped piece 611 and a second arc-shaped piece 612, and one end of the first arc-shaped piece 611 is connected to one end of the second arc-shaped piece 612 through a first rotating shaft hinge assembly 613.
Be connected with rotatory fastener 614 on the outer wall of the other end of first arc piece 611, be connected with rotatory locating lever 615 on the outer wall of the other end of second arc piece 612, the one end of rotatory fastener 614 is rotated with first arc piece 611 through the pivot and is connected, has seted up buckle connection groove 616 on the other end of rotatory fastener 614, and rotatory locating lever joint is in buckle connection groove 616.
The pressing mechanism 62 comprises a pressing arc-shaped piece 621, a pressing support screw 622 and a pressing rotating handle 623, wherein pressing connection threaded holes 624 are formed in the first arc-shaped piece 611 and the second arc-shaped piece 612, one end of the pressing support screw 622 penetrates through the pressing connection threaded holes 624 and then is connected with the pressing handle arranged between the first arc-shaped piece 611 and the second arc-shaped piece 612 through a first rotating bearing assembly 625, and the other end of the pressing support screw 622 is connected with the pressing rotating handle 623.
The outer end face of the first arc-shaped piece 611 and the outer end face of the second arc-shaped piece 612 are both provided with a first bearing connection hole, and the first rotating bearing assembly 625 is connected in the first bearing connection hole.
The pressing support screw 622 comprises a screw portion 626 and a bearing connecting rod head 627 arranged at the end portion of the screw portion 626, and after the bearing connecting rod head 627 is inserted into the first rotating bearing assembly, the end portion of the screw portion 626 is clamped at the outer side of the first bearing connecting hole. The radius value of the screw part 626 in the invention is larger than that of the first bearing connecting hole, and the length value of the bearing connecting rod head 627 is the same as the thickness value of the first bearing connecting hole. When compressing tightly rotatory handle 623 and rotate the back and drive and compress tightly supporting screw 622 and rotate, because compress tightly supporting screw 622 and be connected with the arc piece through first rotating bearing assembly, compress tightly supporting screw and can not drive the arc piece and rotate after rotating, this has just avoided the arc piece to rotate the back and the 2 pivoted circumstances of well location cover section take place, when the arc piece is about to contact well location cover section 2, with the hand dial the arc piece the position can.
When the pressing mechanism 62 is installed, the arc-shaped piece and the pressing support screw rod can be separated only by separating the bearing connecting rod head 627 from the first rotating bearing component, and then the pressing support screw rod can be conveniently installed and detached. When the pliers with the extension bar or the hydraulic pliers are used, firstly, the rigid jaw is easy to damage the middle positioning sleeve section 2, and secondly, the distance is small, so that the operation is inconvenient, and the sleeve extruder 6 is designed, so that the connecting part of the middle positioning sleeve section 2 can be extruded in a large area under the condition of ensuring the structure safety of the middle positioning sleeve section 2, and the pliers are high in construction efficiency, convenient to carry, simple in structure and convenient to process.
Example 3
In the construction method of the sleeve type thinning stirrup structure superposed beam, a precast beam with a novel structure is arranged. When the structure is used for construction, the steps are as follows: erecting longitudinal ribs at the upper part of the beam; sleeving the thinning type common stirrup; penetrating the lower longitudinal ribs; binding (welding) common stirrups with the upper and lower longitudinal bars to form an initial skeleton; connecting the middle positioning sleeve and the lower hoop reinforcement; connecting the upper stirrup and the middle positioning sleeve at a set position; the connected upper and lower stirrups are bound and connected with the upper and lower longitudinal bars to form a secondary framework; erecting a template for prefabricating the superposed beam and performing first concrete pouring (prefabricating) on the superposed beam; transporting the prefabricated superposed beam to a construction site and installing; splitting the upper stirrups and the longitudinal bars; the prefabricated composite slab is positioned and installed on the prefabricated composite beam without barriers; secondarily installing upper stirrups and longitudinal bars; the sleeve extruding machine fastens the sleeve and locks the upper stirrup; binding the upper stirrups and the upper reinforcing steel bars for the second time to form a final framework; and integrally pouring the beam plate laminated concrete.
After the prefabricated superposed beam is conveyed to the site, the upper stirrup section is separated from the middle positioning sleeve section, and because the upper stirrup section is preliminarily clamped with the middle positioning sleeve section, workers can conveniently separate the prefabricated superposed beam. The processed prefabricated composite slab and the prefabricated composite beam are placed without barriers, and the longitudinal ribs of the composite slab are placed on the upper surface of the prefabricated composite beam. Lay upper portion stirrup section and upper portion and indulge the muscle, upper portion stirrup section is pegged graft in well positioning sleeve section, injects the back and locks through sleeve extrusion machines, is provided with two hold-down mechanism 62 in the sleeve extrusion machines, and centering positioning sleeve section that can be better on a large scale compresses tightly, and the compression range is big, compresses tightly effectually.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The parts which are not described in the invention can be realized by adopting or referring to the prior art.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (10)
1. A construction method of a sleeve type thinning stirrup structure composite beam is characterized in that a composite beam floor structure comprises a prefabricated composite beam and a prefabricated composite slab, and the prefabricated composite beam comprises a combined type closed stirrup structure, thinning type common stirrups, lower longitudinal reinforcements and upper longitudinal reinforcements;
the combined closed stirrup structure comprises a lower stirrup section, a middle positioning sleeve section and an upper stirrup section, wherein the middle positioning sleeve section comprises an upper connecting pipe part, a middle tightening pipe part and a lower threaded pipe part, and the middle positioning sleeve section is matched with a sleeve extruder;
the construction method comprises the following steps:
step one, at least two upper longitudinal ribs are supported on a binding bracket;
step two, sleeving a plurality of thinning type common stirrups into the upper longitudinal bars;
thirdly, a plurality of thinning type common stirrups are arranged in parallel at intervals longitudinally; longitudinally arranging at least two lower longitudinal bars at the inner sides of a plurality of thinning type common stirrups, and binding the lower stirrup sections by using steel wires;
step four, binding or welding the common stirrups and the upper and lower longitudinal bars to form an initial skeleton;
step five, connecting the middle positioning sleeve sections with the end parts of the U-shaped lower stirrup sections in a threaded manner, wherein each lower stirrup section is matched with two middle positioning sleeve sections;
step six, inserting the inverted U-shaped upper stirrup section into two adjacent middle positioning sleeve sections, and applying certain pressure to the upper stirrup section after insertion so that the upper stirrup section is fittingly clamped to the middle positioning sleeve sections;
step seven, using enough steel wires to enable the lower hooping sections to be bound and connected with the lower longitudinal bars, and using a small amount of steel wires to enable the upper hooping sections to be bound and connected with the upper longitudinal bars, so as to form a second-stage framework;
step eight, erecting a template of the prefabricated superposed beam, performing first concrete pouring on the superposed beam, and forming the prefabricated superposed beam after final setting;
synchronously processing the prefabricated composite slabs in the prefabricated processing factory, transporting the prefabricated composite beams and the prefabricated composite slabs to a construction site by using a transport vehicle, and positioning and installing the composite beams;
step ten, splitting the upper stirrup section and the upper longitudinal bar of the prefabricated superposed beam, wherein the upper stirrup section is separated from the middle positioning sleeve section;
step eleven, using hoisting equipment to perform barrier-free installation and positioning on the prefabricated composite slab to the prefabricated composite beam;
step twelve, secondary installation of the upper stirrup section and the upper longitudinal bar; the lower part of the upper stirrup segment is inserted into the upper parts of the upper connecting pipe part and the middle tightening pipe part again;
step thirteen, a sleeve extruding machine is used for compressing and fixing the upper hoop reinforcement section and the upper parts of the upper connecting pipe part and the middle tightening pipe part, and the upper hoop reinforcement section is locked;
binding the upper stirrup section and the upper steel bar for the second time to form a final framework;
and step fifteen, integrally pouring the beam plate and superposing the concrete.
2. The construction method of the sleeve type thinning stirrup structure composite beam according to claim 1, wherein the lower stirrup section comprises a first lower U-shaped ribbed steel bar and first threaded rod parts, and the two first threaded rod parts are respectively connected to the two upper end parts of the first lower U-shaped ribbed steel bar;
the inboard of first U-shaped ribbed steel bar is connected with the middle part and indulges the muscle, and the muscle is indulged in the middle part has a plurality ofly, and the muscle is indulged to a plurality of middle parts and is parallel to each other set up.
3. The construction method of the sleeve type thinning stirrup structure composite beam according to claim 2, wherein the lower longitudinal bars, the middle longitudinal bars and the upper longitudinal bars are all ribbed steel bars, the number of the lower longitudinal bars is three, and the number of the upper longitudinal bars is two.
4. The construction method of the overlapped beam with the casing type thinning hoop reinforcement structure according to claim 1, wherein the upper connecting pipe part, the middle tightening pipe part and the lower threaded pipe part are integrally formed, the upper connecting pipe part and the lower threaded pipe part are both in a circular pipe shape, and the middle tightening pipe part is an arc-shaped pipe with a narrow middle part and wide two sides; the length of the lower threaded pipe portion is greater than that of the upper connecting pipe portion.
5. The construction method of the sleeve type thinning stirrup structure composite beam according to claim 4, wherein the inner wall of the upper connecting pipe part is a smooth wall surface.
6. The construction method of the overlapped beam with the sleeve-type thinning-out stirrup structure according to claim 1, wherein the upper stirrup section is a ribbed steel bar, and the thinning-out common stirrup is a rectangular frame-shaped steel bar; the end part of the thinning-type common stirrup is in a hook shape.
7. The construction method of the sleeve type spacer stirrup structural composite beam according to claim 1, wherein the sleeve extruder comprises a sleeve mechanism and two sets of pressing mechanisms, the two sets of pressing mechanisms are respectively connected to the front end and the rear end of the sleeve mechanism, and after the sleeve mechanism is sleeved on the middle positioning sleeve section, the sleeve mechanism is flattened and locked by the two sets of pressing mechanisms.
8. The construction method of the overlapped beam with the sleeve-type thinning-out stirrup structure as claimed in claim 7, wherein the sleeving mechanism comprises a first arc-shaped piece and a second arc-shaped piece, and one end of the first arc-shaped piece is connected with one end of the second arc-shaped piece through a first rotating shaft hinge assembly;
be connected with rotatory fastener on the outer wall of the other end of first arc piece, be connected with the rotational positioning pole on the outer wall of the other end of second arc piece, the one end of rotatory fastener rotates with first arc piece to be connected, has seted up the lock joint groove on another tip of rotatory fastener, and the rotational positioning pole joint is in the lock joint inslot.
9. The construction method of the overlapped beam with the casing type stud stirrup structure as claimed in claim 8, wherein the pressing mechanism comprises a pressing arc piece, a pressing support screw rod and a pressing rotation handle, the first arc piece and the second arc piece are respectively provided with a pressing connection threaded hole, one end of the pressing support screw rod passes through the pressing connection threaded hole and then is connected with the pressing handle arranged between the first arc piece and the second arc piece through a first rotating bearing assembly, and the other end of the pressing support screw rod is connected with the pressing rotation handle.
10. The construction method of the sleeve type thinning stirrup structure composite beam according to claim 9, wherein the outer end surfaces of the first arc-shaped piece and the second arc-shaped piece are respectively provided with a first bearing connecting hole, and the first rotating bearing assembly is connected in the first bearing connecting hole;
compress tightly the supporting screw and include screw rod portion and set up the bearing connecting rod head at screw rod portion tip, and the bearing connecting rod head inserts back in first rotation bearing subassembly, and screw rod portion tip joint is in the outside of first bearing connecting hole.
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| JP2016079695A (en) * | 2014-10-17 | 2016-05-16 | 五洋建設株式会社 | Beam construction method, and precast plate for beam |
| CN107386512A (en) * | 2017-07-05 | 2017-11-24 | 中建八局第建设有限公司 | A kind of new fabrication and installation method of Prefabricated superposed beam plate |
| CN207063334U (en) * | 2017-07-24 | 2018-03-02 | 维拓客科技（深圳）有限公司 | A kind of composite beam gluten wears muscle servicing unit and equipment |
| JP6978901B2 (en) * | 2017-11-08 | 2021-12-08 | 株式会社安藤・間 | Joining structure and joining method of precast concrete beam members |
| CN109707173B (en) * | 2019-02-02 | 2023-07-25 | 福建工程学院 | Construction method of assembly type laminated beam plate installation auxiliary device |
| KR102081028B1 (en) * | 2019-08-08 | 2020-02-24 | (주)티케이이엔지 | Prefabricated Shear Reinforcement Assembly for Reinforced Concrete Beams and Shear Reinforcement Construction Method of Reinforced Concrete Beams With Prefabricated Shear Reinforcement Assembly |
| CN111809796A (en) * | 2020-08-14 | 2020-10-23 | 浙江华临建设集团有限公司 | Assembled concrete composite beam and construction method thereof |
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