CN112459243A - Construction method for beam column joint core area of frame structure - Google Patents
Construction method for beam column joint core area of frame structure Download PDFInfo
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- CN112459243A CN112459243A CN202011388059.4A CN202011388059A CN112459243A CN 112459243 A CN112459243 A CN 112459243A CN 202011388059 A CN202011388059 A CN 202011388059A CN 112459243 A CN112459243 A CN 112459243A
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- column
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the technical field of beam-column construction, in particular to a construction method for a beam-column joint core area of a frame structure. The method comprises the following steps: s1, installing the frame beam column node steel bars: s11, mounting the bottom plate frame beam column joint steel bars; s12, mounting the middle-layer plate and top plate frame beam column joint steel bars; s2, mounting and fixing the stem additional steel bar 1; s3, dividing construction joints; s4, constructing concrete in the core area; and S5, processing construction joints. The synchronous construction method for the frame beam-column joint core area and the structural slab is advanced in technology and high in construction speed, greatly improves construction quality and saves construction cost. The invention is mainly applied to the construction of the beam-column joint core area of the frame structure.
Description
Technical Field
The invention relates to the technical field of beam-column construction, in particular to a construction method for a beam-column joint core area of a frame structure.
Background
Traditional beam column node core space is independently executed according to frame post and the different concrete reference numbers of structure beam slab and is done, and general frame post concrete reference number is higher than 2 grades of structure beam slab, constructs beam column node core space concrete earlier, adopts binding off net or wire netting to separate, pours beam slab concrete before the concrete initial set again, because the whole arrangement of reinforcement rate of subway station is great, the reinforcing bar is denser, it has very big degree of difficulty to separate the construction, the concrete quality of pouring successively also hardly guarantees.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the construction method for the beam-column joint core area of the frame structure, the construction method is simple in process, optimizes the procedures of template installation, template dismantling, concrete pouring and the like in independent construction, is high in construction speed, and greatly improves the construction quality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a construction method for a beam-column joint core area of a frame structure comprises the following steps:
s1, installing the frame beam column node steel bars: s11, mounting the bottom plate frame beam column joint steel bars; s12, mounting the middle-layer plate and top plate frame beam column joint steel bars;
s2, mounting and fixing the stem with additional steel bars;
s3, dividing construction joints;
s4, constructing concrete in the core area;
and S5, processing construction joints.
In step S11, when the floor frame beam-column joint reinforcing steel bars are installed, the upper row beam-side main reinforcements on the frame beam in the frame column outside area are preferentially installed, the stirrups are synchronously arranged to the outer edge of the frame column, then the stirrup side column short-side main reinforcements are installed, after the column short-side main reinforcements are installed, the fixed column large stirrups and the small stirrups are installed, the remaining column main reinforcements, the beam large stirrups and the core column stirrups are synchronously installed until the installation of the frame column reinforcing steel bars and the beam large stirrups is completed, then the upper row main reinforcements, the lower row main reinforcements and the lateral construction reinforcing steel bars on the frame beam are installed, and finally the core column additional main reinforcements are installed.
In step S12, when the reinforcing bars of the beam-column joints of the middle-layer plate and the top plate frame are installed, the hoop reinforcements of the frame column are installed first, and after the installation of the reinforcing bars of the frame column is completed, the upper and lower rows of main reinforcements and the lateral structural reinforcements of the frame beam are installed.
The beam opening stirrups are reserved according to the interval arrangement requirement in advance before the frame column stirrups are installed, the opening faces the top surface of the plate, and the opening stirrups are closed by single-side lap welding after the frame column reinforcements are installed.
In the step S2, the top of the additional steel bar of the core column is bent by 5d to form a hook, a C20 steel bar stirrup is used to make the steel bar and fixed to the top of the frame beam, the top plate is fixed to the bottom of the structural slab, and the 5d hook part and the C20 steel bar stirrup are fixed in position and at an elevation by electric welding.
In the step S3, the horizontal construction joints of the frame columns are left to be divided according to different concrete grades, and the specific division principle is that the construction joints at the bottoms of the frame columns are left to be arranged on the top surfaces of the structural slabs, and the construction joints at the tops of the frame columns are left to be arranged on the bottom surfaces of the structural slabs.
In the step S4, according to the division principle of the horizontal construction joints of the frame columns, performing the structural construction layer by layer, wherein in order to ensure the concrete construction quality of the core area, when each layer of frame columns is constructed, the core column additional steel bars are pre-embedded in advance, and the concrete casting height at the construction joints is higher than the designed top surface.
In step S5, the processing step includes:
s51, the joint surface is a rough surface, and the joint surface is cleaned by floating slurry, loose stones and a soft concrete layer;
s52, fully wetting the joint surface by adopting a watering method without water accumulation;
s53, coating cement-based infiltration crystallization for about 24 hours before upper concrete construction, and ensuring the compactness of the concrete of the bonding surface;
the concrete construction of the upper part can be carried out when the strength of the concrete poured at the construction joint is required to be more than 1.2 MPa.
Compared with the prior art, the invention has the beneficial effects that:
the core area concrete has the same grade as the structural beam slab concrete, and is poured with the structural beam slab at the same time without setting a construction joint; the process is simple, and the procedures of template installation, template dismantling, concrete pouring and the like of independent construction are optimized; the construction operation time and the construction cost are obviously reduced. The synchronous construction method for the frame beam-column joint core area and the structural slab is advanced in technology and high in construction speed, greatly improves construction quality and saves construction cost.
Drawings
FIG. 1 is a construction flow chart of the present invention;
FIG. 2 is a first illustration of the fixation of additional reinforcement bars according to the present invention;
FIG. 3 is a second illustration of the fixation of additional reinforcement bars according to the present invention;
in the figure: 1 is an additional steel bar, 2 is a 5d hook and 3 is a steel bar stirrup.
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.
As shown in fig. 1 to 3, the construction method for the beam-column joint core area of the frame structure includes the following steps:
s1, installing the frame beam column node steel bars: s11, mounting the bottom plate frame beam column joint steel bars; s12, mounting the middle-layer plate and top plate frame beam column joint steel bars;
s2, mounting and fixing the stem additional steel bar 1;
s3, dividing construction joints;
s4, constructing concrete in the core area;
and S5, processing construction joints.
Preferably, in step S11, when the floor frame beam-column joint reinforcing steel bars are installed, the frame column outside area frame beam upper row beam-side main reinforcements are installed preferentially, the stirrups are arranged to the frame column outer edge synchronously, then the stirrup side column short-side main reinforcements are installed and constructed firstly, after the column short-side main reinforcements are installed, the fixed column large stirrups and the small stirrups are installed, the residual column main reinforcements are installed synchronously with the beam large stirrups and the core column stirrups, the frame column and the core column stirrups are bound and fixed while being installed until the frame column reinforcing steel bars and the beam large stirrups are installed, then the frame beam upper row main reinforcements, the frame column upper row main reinforcements, the frame beam lower row main reinforcements, the core column additional main reinforcements are installed finally.
Preferably, in step S12, because the construction joint of the frame column is located at 20cm of the bottom of the frame beam, the main reinforcement joint of the column is generally located at more than 50cm of the top surface of the middle plate and at the bottom of the top plate after the concrete pouring of the frame column is completed, when the reinforcing steel bars of the joints of the middle plate and the top plate frame beam are installed, the hoop reinforcements of the frame column are installed first, and then the upper and lower rows of main reinforcements and the lateral construction reinforcements of the frame beam are installed after the reinforcing steel bars of the frame column are installed.
Preferably, receive frame post owner muscle and get rid of the stubble influence, the unable installation of the big stirrup of frame roof beam, should reserve according to the interval arrangement requirement in advance before the installation of frame post stirrup and establish roof beam opening stirrup, the opening is towards the board top surface, and the opening hoop is treated and is adopted single face lap-joint to weld the closure after frame post reinforcing bar installation completion, and the welding seam requirement and overlap joint area percentage will satisfy design and standard requirement.
Preferably, in step S2, the stem is provided with a hook 2 bent at the top of the additional steel bar 1 by 5d, a C20 steel bar is used to make a steel bar stirrup 3 fixed to the top of the frame beam, the top plate is fixed to the bottom of the structural slab, the hook 2 part of the stem and the C20 steel bar stirrup 3 are electrically welded at fixed positions and elevations under the influence of the bent section at the top of the additional steel bar 1, and the stem stirrup needs to be placed according to the spacing arrangement requirement before the additional steel bar 1 is inserted.
Preferably, in step S3, the horizontal construction joints of the frame columns are left and divided according to different concrete grades, and the specific division principle is that the construction joints at the bottoms of the frame columns are left and arranged on the top surfaces of the structural slabs, and the construction joints at the tops of the frame columns are left and arranged on the bottom surfaces of the structural slabs.
Preferably, in step S4, according to the division principle of the horizontal construction joints of the frame columns, performing structure construction layer by layer, wherein in order to ensure the quality of concrete construction in the core area, when each layer of frame column is constructed, the core column additional steel bar 1 is pre-embedded in advance, so as to ensure that the high-strength frame column concrete is poured in place at one time, and considering the roughening treatment at the construction joints in the later period, the concrete pouring height at the construction joints should be higher than the designed top surface elevation by 5 cm.
Preferably, in step S5, after the concrete construction of the frame column and the core area is completed, in order to ensure that the concretes at the construction joints in different grades and different construction times are tightly combined, the concrete at the construction joints needs to be subjected to processes such as roughening, cleaning, and applying an interface agent. The processing steps comprise:
s51, the joint surface is a rough surface, and the joint surface is cleaned by floating slurry, loose stones and a soft concrete layer;
s52, fully wetting the joint surface by adopting a watering method without water accumulation;
s53, coating cement-based infiltration crystallization for about 24 hours before upper concrete construction, and ensuring the compactness of the concrete of the bonding surface;
preferably, the concrete construction of the upper part can be carried out when the strength of the cast concrete at the construction joint is required to be more than 1.2 MPa.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (9)
1. A construction method for a beam column joint core area of a frame structure is characterized by comprising the following steps:
s1, installing the frame beam column node steel bars: s11, mounting the bottom plate frame beam column joint steel bars; s12, mounting the middle-layer plate and top plate frame beam column joint steel bars;
s2, mounting and fixing the stem with additional steel bars;
s3, dividing construction joints;
s4, constructing concrete in the core area;
and S5, processing construction joints.
2. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in step S11, when the floor frame beam-column joint reinforcing steel bars are installed, the upper row beam-side main reinforcements on the frame beam in the frame column outside area are preferentially installed, the stirrups are synchronously arranged to the outer edge of the frame column, then the stirrup side column short-side main reinforcements are installed, after the column short-side main reinforcements are installed, the fixed column large stirrups and the small stirrups are installed, the remaining column main reinforcements, the beam large stirrups and the core column stirrups are synchronously installed until the installation of the frame column reinforcing steel bars and the beam large stirrups is completed, then the upper row main reinforcements, the lower row main reinforcements and the lateral construction reinforcing steel bars on the frame beam are installed, and finally the core column additional main reinforcements are installed.
3. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in step S12, when the reinforcing bars of the beam-column joints of the middle-layer plate and the top plate frame are installed, the hoop reinforcements of the frame column are installed first, and after the installation of the reinforcing bars of the frame column is completed, the upper and lower rows of main reinforcements and the lateral structural reinforcements of the frame beam are installed.
4. The frame structure beam-column joint core area construction method according to claim 3, characterized in that: the beam opening stirrups are reserved according to the interval arrangement requirement in advance before the frame column stirrups are installed, the opening faces the top surface of the plate, and the opening stirrups are closed by single-side lap welding after the frame column reinforcements are installed.
5. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in the step S2, the top of the additional steel bar of the core column is bent by 5d to form a hook, a C20 steel bar stirrup is used to make the steel bar and fixed to the top of the frame beam, the top plate is fixed to the bottom of the structural slab, and the 5d hook part and the C20 steel bar stirrup are fixed in position and at an elevation by electric welding.
6. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in the step S3, the horizontal construction joints of the frame columns are left to be divided according to different concrete grades, and the specific division principle is that the construction joints at the bottoms of the frame columns are left to be arranged on the top surfaces of the structural slabs, and the construction joints at the tops of the frame columns are left to be arranged on the bottom surfaces of the structural slabs.
7. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in the step S4, according to the division principle of the horizontal construction joints of the frame columns, performing the structural construction layer by layer, wherein in order to ensure the concrete construction quality of the core area, when each layer of frame columns is constructed, the core column additional steel bars are pre-embedded in advance, and the concrete casting height at the construction joints is higher than the designed top surface.
8. The frame structure beam-column joint core area construction method according to claim 1, characterized in that: in step S5, the processing step includes:
s51, the joint surface is a rough surface, and the joint surface is cleaned by floating slurry, loose stones and a soft concrete layer;
s52, fully wetting the joint surface by adopting a watering method without water accumulation;
and S53, coating cement base for infiltration crystallization about 24 hours before the upper concrete is constructed, and ensuring the compactness of the concrete of the bonding surface.
9. The frame structure beam-column joint core area construction method according to claim 8, characterized in that: the concrete construction of the upper part can be carried out when the strength of the concrete poured at the construction joint is required to be more than 1.2 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388059.4A CN112459243A (en) | 2020-12-01 | 2020-12-01 | Construction method for beam column joint core area of frame structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011388059.4A CN112459243A (en) | 2020-12-01 | 2020-12-01 | Construction method for beam column joint core area of frame structure |
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| CN112459243A true CN112459243A (en) | 2021-03-09 |
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Application publication date: 20210309 |