CN111794500A - Cast-in-place structure formwork system of encorbelmenting - Google Patents

Cast-in-place structure formwork system of encorbelmenting Download PDF

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Publication number
CN111794500A
CN111794500A CN202010769810.9A CN202010769810A CN111794500A CN 111794500 A CN111794500 A CN 111794500A CN 202010769810 A CN202010769810 A CN 202010769810A CN 111794500 A CN111794500 A CN 111794500A
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China
Prior art keywords
cantilever
template
shaped
frame
overhanging
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Chinese (zh)
Inventor
胡维腾
雷建
曹震
戴花
李日炎
陈源康
俞峰
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Sunyoung Construction Group Co ltd
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Sunyoung Construction Group Co ltd
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Priority to CN202010769810.9A priority Critical patent/CN111794500A/en
Publication of CN111794500A publication Critical patent/CN111794500A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0263—Hardening promoted by a rise in temperature
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The invention discloses a cast-in-place cantilever structure formwork system, which has the technical scheme key points that: the method comprises the following steps: the cantilever frame is fixed at the non-cantilever part of the house, and the cantilever frame part extends out of the non-cantilever part of the house; the overhanging steel bars are deeply buried at the end side of the non-overhanging part of the house; a reinforcement cage bound at the position of the overhanging reinforcement; two groups of profile steel cantilever beams deeply buried at the end side of the non-cantilever part of the house; a template component fixed on the cantilever frame is installed; and concrete poured inside the formwork assembly; this cast-in-place structure formwork system of encorbelmenting has the reliable advantage of structure.

Description

Cast-in-place structure formwork system of encorbelmenting
Technical Field
The invention relates to the field of buildings, in particular to a cast-in-place cantilever structure formwork system.
Background
Modern buildings often adopt a high-altitude large-cantilever method to meet the requirements of use functions and attractive appearance. Such as a large-span atrium of public buildings and super high-rise commercial and residential buildings, sometimes the height reaches more than ten floors in order to achieve the building effects of spaciousness, permeability and wide visual field; in high-rise and super high-rise residential buildings, in order to develop the personality of the building, a framework on a roof is cantilevered a plurality of meters out of the plane of the building; the construction characteristics of the structure of encorbelmenting are: the span is large, the height is high, the construction load is large, the construction difficulty is high, and therefore the improvement of the high-altitude large cantilever structure and the construction method thereof has very obvious practical significance.
The existing Chinese patent with publication number CN110397165A discloses an overhanging structure and a construction method, which comprises an overhanging beam, wherein a framework is embedded in the overhanging beam, the framework extends along the length direction of the overhanging beam, the framework is a hollow shell, and the cross section of the framework is H-shaped; the cantilever beam is characterized by further comprising a fixed seat, the upper end of the fixed seat is embedded in the cantilever beam, the lower end of the fixed seat is embedded in a building and fixedly connected with the building, and the framework is fixedly connected with the fixed seat.
The cantilever structure and the construction method have the advantage of high stability of the cantilever structure; however, the above-mentioned cantilever structure and construction method still have some disadvantages, such as: a plurality of steel pipes are used for supporting, the cantilever stress is large, and the template is difficult to support.
Disclosure of Invention
In view of the problems mentioned in the background art, the present invention is directed to a cast-in-place cantilever formwork system, so as to solve the problems mentioned in the background art.
The technical purpose of the invention is realized by the following technical scheme:
a cast-in-place overhanging structure formwork system comprises:
the cantilever frame is fixed at the non-cantilever part of the house, and the cantilever frame part extends out of the non-cantilever part of the house;
the overhanging steel bars are deeply buried at the end side of the non-overhanging part of the house;
a reinforcement cage bound at the position of the overhanging reinforcement;
two groups of profile steel cantilever beams deeply buried at the end side of the non-cantilever part of the house;
a template component fixed on the cantilever frame is installed;
and concrete poured inside the formwork assembly.
Preferably, the cantilever frame comprises a steel frame, a plurality of connecting pieces and a plurality of fastening columns, and the connecting pieces are fixed to the non-cantilever part of the house through the fastening columns respectively.
Preferably, the section steel frame is formed by welding and fixing a plurality of channel steels or a plurality of H-shaped steels or a plurality of flat steels.
Preferably, a plurality of structural reinforcing rods are fixedly arranged between the two groups of profile steel suspension beams through rivets.
Preferably, the profile steel suspension beam is one of H-shaped steel, T-shaped steel and channel steel.
Preferably, the formwork assembly comprises a first T-shaped formwork, a second T-shaped formwork and a pouring opening, the first T-shaped formwork is fixed on the cantilever frame through a plurality of rivets, the second T-shaped formwork is fixed on the first T-shaped formwork through a plurality of rivets, and the pouring opening is formed in the second T-shaped formwork.
The invention also provides a pouring method of the cast-in-place cantilever structure formwork system, which comprises the following steps:
s1, mounting a cantilever frame at the bottom of a non-cantilever part of a house, fixing the fastening column on the connecting sheet at the bottom of the non-cantilever part of the house by using a drill gun during mounting of the cantilever frame, and mounting and fixing a section steel frame;
s2, binding a reinforcement cage at a reserved overhanging reinforcement after the non-overhanging part of the house is poured, and providing support by using the cantilever frame when the reinforcement cage is bound;
s3, carrying out flaw detection on the two groups of profile steel suspension beams, and detecting whether cracks exist or not;
s4, fixing the structural reinforcing rods between the two groups of profile steel cantilever beams by using rivets, and using cantilever frames as operation supports;
s5, installing the template assembly, cleaning the first T-shaped template and the second T-shaped template in the template assembly, fixing the first T-shaped template in the template assembly on the cantilever frame by using a rivet, clamping the second T-shaped template outside the first T-shaped template, and fixing the first T-shaped template and the second T-shaped template by using a rivet;
s6, pouring concrete in the formwork assembly, and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, the template component is firstly disassembled, and then the cantilever frame is disassembled.
Preferably, before S1, a scaffold is set up, a fully-suspended safety pocket net is fully hung, and a springboard is laid, wherein the scaffold selects to climb the scaffold, the fully-suspended safety pocket net covers the bottom and the peripheral side of the cantilever, and the springboard is fixed on the scaffold.
Preferably, after the S6 concrete pouring is completed for 1-2 hours, the concrete is electrically heated by connecting heating wires to prevent the concrete from being frozen or cracked; and (3) stopping electric heating after the concrete reaches the designed strength, wherein the cooling rate of the concrete is less than 4 ℃/h when the electric heating is stopped, and after the concrete reaches the normal temperature, covering a plastic film and curing by boiling water for at least 14 days.
Preferably, in S3, when performing flaw detection on the two groups of steel cantilever beams, the adopted flaw detection equipment is an ultrasonic flaw detector, and after performing flaw detection on the two groups of steel cantilever beams, flaw detection is performed on the overhanging steel bars.
In summary, the invention mainly has the following beneficial effects:
the cast-in-place cantilever structure formwork system has the advantage of reliable structure, when construction is carried out, as overhanging steel bars are reserved on the end side of a non-overhanging part of a house, steel bar cages are bound at the overhanging steel bars, two groups of profile steel cantilever beams are deeply buried on the end side of the non-overhanging part of the house, the structural strength, the bending resistance and the torsional modulus of the cantilever beam can be greatly improved under the combined action of the overhanging steel bars, the steel bar cages and the profile steel cantilever beams, and the service life of the cantilever beam is prolonged;
secondly, the pouring method of the cast-in-place cantilever structure formwork system has the advantages of simple working procedures and convenient operation; through installing the cantilever frame on the house non-overhanging position of pouring completion, can make things convenient for template component's fixing, can avoid reusing the steel pipe and support template component, avoided the stress of encorbelmenting, increased the swift of construction, optimized and improved traditional construction flow simultaneously.
Drawings
FIG. 1 is one of the schematic structural diagrams of a formwork system of a cast-in-place cantilever structure;
FIG. 2 is a second schematic structural view of a formwork system of a cast-in-place cantilever structure;
fig. 3 is a schematic structural view of the cast-in-place cantilever structure formwork system after the formwork assembly and concrete are hidden.
Reference numerals: 1. a non-overhanging part of the house; 2. a cantilever frame; 3. overhanging reinforcing steel bars; 4. a reinforcement cage; 5. a profile steel cantilever beam; 6. a template assembly; 21. a steel frame; 22. connecting sheets; 23. fastening the column; 7. a structural reinforcement bar; 61. a first T-shaped template; 62. a second T-shaped template; 63. and (6) pouring a port.
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.
Example 1
Referring to fig. 1 to 3, a cast-in-place cantilever structure formwork system mainly includes the following parts:
the cantilever frame 2 is fixed on the non-cantilever part 1 of the house, wherein the cantilever frame 2 partially extends out of the non-cantilever part 1 of the house;
the overhanging steel bars 3 are deeply buried at the end side of the non-overhanging part 1 of the house;
a reinforcement cage 4 bound at the position of the overhanging reinforcement 3;
two groups of profile steel cantilever beams 5 deeply buried at the end side of the non-cantilever part 1 of the house;
a template component 6 fixed on the cantilever frame 2 is installed;
and concrete poured inside the formwork assembly 6.
Referring to fig. 1 to 3, an overhanging frame 2 includes a steel frame 21, a plurality of connecting pieces 22 and a plurality of fastening posts 23, wherein the plurality of connecting pieces 22 are respectively fixed on a non-overhanging part 1 of a house through the fastening posts 23, and the fixing of the overhanging frame 2 can be conveniently realized by fixing the fastening posts 23 on the non-overhanging part 1 of the house; the section steel frame 21 is formed by welding and fixing a plurality of channel steel, and when the section steel frame 21 is welded by adopting the channel steel, the bending resistance and torsion resistance of the section steel frame are good; wherein, a plurality of structural reinforcing rods 7 are fixedly arranged between the two groups of section steel suspension beams 5 through rivets for increasing the structural strength of the suspension beams.
Referring to fig. 1 to 3, a steel suspension girder 5 is H-shaped steel which has excellent mechanical properties and is moderate in price; the template assembly 6 comprises a first T-shaped template 61, a second T-shaped template 62 and a pouring opening 63, wherein the first T-shaped template 61 is fixed on the cantilever frame 2 through a plurality of rivets, the second T-shaped template 62 is fixed on the first T-shaped template 61 through a plurality of rivets, the pouring opening 63 is formed in the second T-shaped template 62, and the template assembly 6 is constructed by utilizing the first T-shaped template 61 and the second T-shaped template 62, so that the template assembly 6 has the advantage of simplicity.
The analysis shows that: this cast-in-place structure formwork system of encorbelmenting has the advantage that the structure is reliable, owing to there is overhanging reinforcing bar 3 at the 1 distolateral reservation in the position of encorbelmenting in the house when being under construction, 3 department ligatures of reinforcing bar have a steel reinforcement cage 4 outward, 1 distolateral side deep buries two sets of shaped steel cantilever beam 5 in the position of encorbelmenting in the house, the structural strength of this cantilever beam of improvement that can be very big under the combined action of overhanging reinforcing bar 3, steel reinforcement cage 4 and shaped steel cantilever beam 5, bending resistance and torsional modulus, the life of increase cantilever beam.
Example 2
Referring to fig. 1 to 3, a cast-in-place cantilever structure formwork system mainly includes the following parts:
the cantilever frame 2 is fixed on the non-cantilever part 1 of the house, wherein the cantilever frame 2 partially extends out of the non-cantilever part 1 of the house;
the overhanging steel bars 3 are deeply buried at the end side of the non-overhanging part 1 of the house;
a reinforcement cage 4 bound at the position of the overhanging reinforcement 3;
two groups of profile steel cantilever beams 5 deeply buried at the end side of the non-cantilever part 1 of the house;
a template component 6 fixed on the cantilever frame 2 is installed;
and concrete poured inside the formwork assembly 6.
Referring to fig. 1 to 3, an overhanging frame 2 includes a steel frame 21, a plurality of connecting pieces 22 and a plurality of fastening posts 23, wherein the plurality of connecting pieces 22 are respectively fixed on a non-overhanging part 1 of a house through the fastening posts 23, and the fixing of the overhanging frame 2 can be conveniently realized by fixing the fastening posts 23 on the non-overhanging part 1 of the house; the section steel frame 21 is formed by welding and fixing a plurality of H-shaped steels, and when the section steel frame 21 is welded by the H-shaped steels, the bending resistance and torsion resistance are good; wherein, a plurality of structural reinforcing rods 7 are fixedly arranged between the two groups of section steel suspension beams 5 through rivets for increasing the structural strength of the suspension beams.
Referring to fig. 1 to 3, a steel cantilever 5 is a T-shaped steel which has excellent mechanical properties and is moderate in price; the template assembly 6 comprises a first T-shaped template 61, a second T-shaped template 62 and a pouring opening 63, wherein the first T-shaped template 61 is fixed on the cantilever frame 2 through a plurality of rivets, the second T-shaped template 62 is fixed on the first T-shaped template 61 through a plurality of rivets, the pouring opening 63 is formed in the second T-shaped template 62, and the template assembly 6 is constructed by utilizing the first T-shaped template 61 and the second T-shaped template 62, so that the template assembly 6 has the advantage of simplicity.
The analysis shows that: this cast-in-place structure formwork system of encorbelmenting has the advantage that the structure is reliable, owing to there is overhanging reinforcing bar 3 at the 1 distolateral reservation in the position of encorbelmenting in the house when being under construction, 3 department ligatures of reinforcing bar have a steel reinforcement cage 4 outward, 1 distolateral side deep buries two sets of shaped steel cantilever beam 5 in the position of encorbelmenting in the house, the structural strength of this cantilever beam of improvement that can be very big under the combined action of overhanging reinforcing bar 3, steel reinforcement cage 4 and shaped steel cantilever beam 5, bending resistance and torsional modulus, the life of increase cantilever beam.
Example 3
Referring to fig. 1 to 3, the difference from embodiment 1 is that a casting method of a cast-in-place cantilever structure formwork system is further provided, which specifically includes the following steps:
s1, installing a cantilever frame 2 at the bottom of a non-overhanging part 1 of a house, fixing a fastening column 23 on a connecting sheet 22 at the bottom of the non-overhanging part 1 of the house by using a drill gun when the cantilever frame 2 is installed, and installing and fixing a section steel frame 21;
s2, binding a reinforcement cage 4 at a reserved overhanging reinforcement 3 after the non-overhanging part 1 of the house is poured, and providing support by using an overhanging frame 2 when binding the reinforcement cage 4;
s3, carrying out flaw detection on the two groups of profile steel suspension beams 5 to detect whether cracks exist or not;
s4, fixing a structural reinforcing rod 7 between the two groups of profile steel suspension beams 5 by using a rivet, and using the suspension bracket 2 as an operation support;
s5, installing the template assembly 6, cleaning a first T-shaped template 61 and a second T-shaped template 62 in the template assembly 6, fixing the first T-shaped template 61 in the template assembly 6 on the cantilever frame 2 through rivets, clamping the second T-shaped template 62 outside the first T-shaped template 61, and fixing the first T-shaped template 61 and the second T-shaped template 62 through rivets;
s6, pouring concrete in the formwork assembly 6, and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, the template component 6 is firstly disassembled, and then the cantilever frame 2 is disassembled.
Wherein, set up the scaffold before S1, hang safety pocket net fully and lay the springboard, the scaffold chooses to climb the scaffold, hangs safety pocket net fully and covers the bottom and all sides of overhanging frame 2, and the springboard is fixed on the scaffold.
After S6 concrete pouring is completed for 1h, the concrete is electrically heated by connecting heating wires to prevent the concrete from being frostbitten or cracked; and (3) stopping electric heating after the concrete reaches the designed strength, wherein the cooling rate of the concrete is 3 ℃/h when the electric heating is stopped, and after the concrete reaches the normal temperature, the concrete is maintained by covering a plastic film and boiling water for 15 d.
When the S3 detects the two groups of steel suspension beams 5, the adopted flaw detection equipment is an ultrasonic flaw detector, and the flaw detection is carried out on the external extending steel bars 3 after the two groups of steel suspension beams 5 are detected.
The analysis shows that: the pouring method of the cast-in-situ cantilever structure formwork system has the advantages of simple working procedures and convenient operation; through installing cantilever frame 2 on the house non-overhanging part 1 of accomplishing pouring, can make things convenient for template component 6 fixed, can avoid reusing steel pipe support template component 6, avoided the atress of encorbelmenting, increased the swift of construction, optimized and improved traditional construction flow simultaneously.
Example 4
Referring to fig. 1 to 3, the difference from embodiment 1 is that a casting method of a cast-in-place cantilever structure formwork system is further provided, which specifically includes the following steps:
s1, installing a cantilever frame 2 at the bottom of a non-overhanging part 1 of a house, fixing a fastening column 23 on a connecting sheet 22 at the bottom of the non-overhanging part 1 of the house by using a drill gun when the cantilever frame 2 is installed, and installing and fixing a section steel frame 21;
s2, binding a reinforcement cage 4 at a reserved overhanging reinforcement 3 after the non-overhanging part 1 of the house is poured, and providing support by using an overhanging frame 2 when binding the reinforcement cage 4;
s3, carrying out flaw detection on the two groups of profile steel suspension beams 5 to detect whether cracks exist or not;
s4, fixing a structural reinforcing rod 7 between the two groups of profile steel suspension beams 5 by using a rivet, and using the suspension bracket 2 as an operation support;
s5, installing the template assembly 6, cleaning a first T-shaped template 61 and a second T-shaped template 62 in the template assembly 6, fixing the first T-shaped template 61 in the template assembly 6 on the cantilever frame 2 through rivets, clamping the second T-shaped template 62 outside the first T-shaped template 61, and fixing the first T-shaped template 61 and the second T-shaped template 62 through rivets;
s6, pouring concrete in the formwork assembly 6, and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, the template component 6 is firstly disassembled, and then the cantilever frame 2 is disassembled.
Wherein, set up the scaffold before S1, hang safety pocket net fully and lay the springboard, the scaffold chooses to climb the scaffold, hangs safety pocket net fully and covers the bottom and all sides of overhanging frame 2, and the springboard is fixed on the scaffold.
After S6 concrete pouring is completed for 1h, the concrete is electrically heated by connecting heating wires to prevent the concrete from being frostbitten or cracked; and (3) stopping electric heating after the concrete reaches the designed strength, wherein the cooling rate of the concrete is 2 ℃/h when the electric heating is stopped, and after the concrete reaches the normal temperature, adopting a plastic film for covering and water-boiling curing, wherein the curing time is 16 d.
Example 5
Referring to fig. 1 to 3, the difference from embodiment 1 is that a casting method of a cast-in-place cantilever structure formwork system is further provided, which specifically includes the following steps:
s1, installing a cantilever frame 2 at the bottom of a non-overhanging part 1 of a house, fixing a fastening column 23 on a connecting sheet 22 at the bottom of the non-overhanging part 1 of the house by using a drill gun when the cantilever frame 2 is installed, and installing and fixing a section steel frame 21;
s2, binding a reinforcement cage 4 at a reserved overhanging reinforcement 3 after the non-overhanging part 1 of the house is poured, and providing support by using an overhanging frame 2 when binding the reinforcement cage 4;
s3, carrying out flaw detection on the two groups of profile steel suspension beams 5 to detect whether cracks exist or not;
s4, fixing a structural reinforcing rod 7 between the two groups of profile steel suspension beams 5 by using a rivet, and using the suspension bracket 2 as an operation support;
s5, installing the template assembly 6, cleaning a first T-shaped template 61 and a second T-shaped template 62 in the template assembly 6, fixing the first T-shaped template 61 in the template assembly 6 on the cantilever frame 2 through rivets, clamping the second T-shaped template 62 outside the first T-shaped template 61, and fixing the first T-shaped template 61 and the second T-shaped template 62 through rivets;
s6, pouring concrete in the formwork assembly 6, and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, the template component 6 is firstly disassembled, and then the cantilever frame 2 is disassembled.
Example 6
Referring to fig. 1 to 3, the difference from embodiment 1 is that a casting method of a cast-in-place cantilever structure formwork system is further provided, which specifically includes the following steps:
s1, installing a cantilever frame 2 at the bottom of a non-overhanging part 1 of a house, fixing a fastening column 23 on a connecting sheet 22 at the bottom of the non-overhanging part 1 of the house by using a drill gun when the cantilever frame 2 is installed, and installing and fixing a section steel frame 21;
s2, binding a reinforcement cage 4 at a reserved overhanging reinforcement 3 after the non-overhanging part 1 of the house is poured, and providing support by using an overhanging frame 2 when binding the reinforcement cage 4;
s3, carrying out flaw detection on the two groups of profile steel suspension beams 5 to detect whether cracks exist or not;
s4, fixing a structural reinforcing rod 7 between the two groups of profile steel suspension beams 5 by using a rivet, and using the suspension bracket 2 as an operation support;
s5, installing the template assembly 6, cleaning a first T-shaped template 61 and a second T-shaped template 62 in the template assembly 6, fixing the first T-shaped template 61 in the template assembly 6 on the cantilever frame 2 through rivets, clamping the second T-shaped template 62 outside the first T-shaped template 61, and fixing the first T-shaped template 61 and the second T-shaped template 62 through rivets;
s6, pouring concrete in the formwork assembly 6, and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, the template component 6 is firstly disassembled, and then the cantilever frame 2 is disassembled.
Wherein, set up the scaffold before S1, hang safety pocket net fully and lay the springboard, the scaffold chooses to climb the scaffold, hangs safety pocket net fully and covers the bottom and all sides of overhanging frame 2, and the springboard is fixed on the scaffold.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a cast-in-place structure formwork system of encorbelmenting which characterized in that: the method comprises the following steps:
the cantilever frame (2) is fixed on a non-cantilever part (1) of the house, and part of the cantilever frame (2) extends out of the non-cantilever part (1) of the house;
the overhanging steel bars (3) are deeply buried at the end side of the non-overhanging part (1) of the house;
a reinforcement cage (4) tied to the position of the overhanging reinforcement (3);
two groups of profile steel cantilever beams (5) deeply buried at the end side of the non-cantilever part (1) of the house;
a template component (6) fixed on the cantilever frame (2) is installed;
and concrete poured inside the formwork assembly (6).
2. The cast-in-place cantilever structure formwork system of claim 1, wherein: the cantilever frame (2) comprises a steel frame (21), a plurality of connecting pieces (22) and a plurality of fastening columns (23), and the connecting pieces (22) are fixed on the non-cantilever part (1) of the house through the fastening columns (23).
3. The cast-in-place cantilever structure formwork system of claim 1, wherein: the section steel frame (21) is formed by welding and fixing a plurality of channel steels or a plurality of H-shaped steels or a plurality of flat steels.
4. The cast-in-place cantilever structure formwork system of claim 1, wherein: and a plurality of structural reinforcing rods (7) are fixedly arranged between the two groups of profile steel suspension beams (5) through rivets.
5. The cast-in-place cantilever structure formwork system of claim 1, wherein: the profile steel suspension beam (5) is one of H-shaped steel, T-shaped steel and channel steel.
6. The cast-in-place cantilever structure formwork system of claim 1, wherein: the formwork assembly (6) comprises a first T-shaped formwork (61), a second T-shaped formwork (62) and a pouring opening (63), the first T-shaped formwork (61) is fixed to the cantilever frame (2) through a plurality of rivets, the second T-shaped formwork (62) is fixed to the first T-shaped formwork (61) through a plurality of rivets, and the pouring opening (63) is formed in the second T-shaped formwork (62).
7. The utility model provides a cast-in-place structure formwork system of encorbelmenting which characterized in that: a pouring method of a cast-in-place cantilever structure formwork system specifically comprises the following parts:
s1, installing a cantilever frame (2) at the bottom of a non-cantilever part (1) of a house, fixing a fastening column (23) on a connecting sheet (22) at the bottom of the non-cantilever part (1) of the house by using a drill gun when the cantilever frame (2) is installed, and installing and fixing a steel frame (21);
s2, binding a reinforcement cage (4) at a position of an overhanging reinforcement (3) reserved after the non-overhanging part (1) of the house is poured, and supporting by using the cantilever frame (2) when the reinforcement cage (4) is bound;
s3, carrying out flaw detection on the two groups of the section steel suspension beams (5) to detect whether cracks exist or not;
s4, fixing the structural reinforcing rods (7) between the two groups of profile steel suspension beams (5) by using rivets, and using a suspension bracket (2) as an operation support;
s5, installing the template assembly (6), cleaning the first T-shaped template (61) and the second T-shaped template (62) in the template assembly (6), fixing the first T-shaped template (61) in the template assembly (6) on the cantilever frame (2) by using rivets, clamping the second T-shaped template (62) outside the first T-shaped template (61), and fixing the first T-shaped template (61) and the second T-shaped template (62) by using rivets;
s6, pouring concrete in the formwork assembly (6), and performing jolt ramming operation during pouring;
s7, curing the concrete in the overhanging pouring template;
s8, firstly removing the template assembly (6), and then removing the cantilever frame (2);
before the step S1, a scaffold, a fully-hung safety pocket net and a springboard are set up, wherein the scaffold selects to climb the scaffold, the fully-hung safety pocket net covers the bottom and the peripheral side of the cantilever frame (2), and the springboard is fixed on the scaffold;
after the S6 concrete pouring is completed for 1-2h, the concrete is electrically heated by connecting heating wires to prevent the concrete from being frostbitten or cracked; stopping electric heating after the concrete reaches the designed strength, wherein the cooling rate of the concrete is less than 4 ℃/h when the electric heating is stopped, and when the concrete reaches the normal temperature, adopting a plastic film for covering and water-boiling curing, wherein the curing time is not less than 14 d;
and in the S3, when the two groups of section steel suspension beams (5) are subjected to flaw detection, the adopted flaw detection equipment is an ultrasonic flaw detector, and after the two groups of section steel suspension beams (5) are subjected to flaw detection, the overhanging reinforcing steel bars (3) are subjected to flaw detection.
CN202010769810.9A 2020-08-04 2020-08-04 Cast-in-place structure formwork system of encorbelmenting Pending CN111794500A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113931450A (en) * 2021-09-23 2022-01-14 贵州建工集团第一建筑工程有限责任公司 Construction method of building high-altitude suspension landscape platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113931450A (en) * 2021-09-23 2022-01-14 贵州建工集团第一建筑工程有限责任公司 Construction method of building high-altitude suspension landscape platform
CN113931450B (en) * 2021-09-23 2023-03-14 贵州建工集团第一建筑工程有限责任公司 Construction method of building high-altitude suspension landscape platform

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