CN110670760B - Construction process of small hollow building block steel concrete core column - Google Patents
Construction process of small hollow building block steel concrete core column Download PDFInfo
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- CN110670760B CN110670760B CN201910956837.6A CN201910956837A CN110670760B CN 110670760 B CN110670760 B CN 110670760B CN 201910956837 A CN201910956837 A CN 201910956837A CN 110670760 B CN110670760 B CN 110670760B
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
- E04B2/24—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
- E04B2/16—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having specially-designed means for stabilising the position
- E04B2/20—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element using elements having specially-designed means for stabilising the position by filling material with or without reinforcements in small channels in, or in grooves between, the elements
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- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the field of masonry infilled wall construction processes, in particular to a small hollow block steel concrete core column construction process, which comprises the following steps: the core column steel bar is fixedly connected with the reserved steel bar; building blocks to required elevation and arranging a cleaning opening and a communicating groove during building; cleaning a cleaning port; blocking the cleaning opening; pouring core column concrete; the invention has the advantages that because the construction process is that the steel bars are planted and then the core column steel bars are built, the installation of the core column steel bars is not limited by the vertical space, the binding or welding quality of the joint is ensured, the position of the steel bars can be positioned by the short steel bars in the building process, and the position is accurate; the communicating groove is formed, so that concrete can freely flow when being poured through the core column reinforcing steel bars when being built.
Description
Technical Field
The invention relates to the field of masonry infilled wall construction processes, in particular to a small hollow block steel concrete core column construction process.
Background
The core column construction process of 6.14 in the national building standard design drawing set 12G614-1 masonry infilled wall structure and 8.6 in the JGJ/T14-2011 concrete small hollow block building technical code is as follows: building blocks to the required elevation → leading the core column reinforcing steel bars to penetrate into the holes of the blocks from top to bottom → binding and lapping with the reserved reinforcing steel bars → cleaning and sweeping openings → plugging and sweeping openings → pouring core column concrete.
In the frame structure, the length of the core column reinforcing steel bars is from the top surface (floor) of the foundation to the bottom (plate bottom), and in the process that the core column reinforcing steel bars penetrate into the holes of the building blocks from top to bottom, the core column reinforcing steel bars are not easy to penetrate due to the influence of the top plate (the upper operable space and the lower operable space are far smaller than the length of the core column reinforcing steel bars), and meanwhile, the connection between the core column reinforcing steel bars and the reserved reinforcing steel bars is limited by; it is more difficult to design stem rebar larger than Φ 12. If the whole reinforcing steel bar of the core column is constructed by a multi-section lap joint method, time and material are wasted, and the load resistance of the core column is influenced.
In order to ensure the lapping quality of the core column reinforcing steel bars and the upper and lower embedded reinforcing steel bars, facilitate operation in actual construction and improve the convenience of construction, the invention specially adjusts the core column construction process.
Disclosure of Invention
In order to solve the problems, the invention provides a construction process of a small hollow block steel concrete core column, which has the following technical scheme:
a construction process for a small hollow block steel concrete core column comprises the following steps:
s1: fixedly connecting the core column reinforcing steel bars with the reserved reinforcing steel bars at the core column position;
s2: building blocks, wherein a plurality of core column holes are formed in the hole building of the blocks at the core column position, core column reinforcing steel bars are arranged in each core column hole, a communicating groove for communicating adjacent core column holes is formed in the skin block after one skin block is built, and a cleaning opening communicated with the core column holes is formed in the position of the lowest skin block;
s4: after the building blocks are built to the designed elevation and the strength of the building mortar is more than 1MPa, flushing the garbage in the core column holes with water, and plugging the cleaning holes after the flushed garbage is discharged from the cleaning holes;
s5: and pouring concrete in the core column hole and compacting.
Further, the step S2 includes the following steps: and in the building process of the building block, short reinforcing steel bars fixedly connected with the core column reinforcing steel bars are inserted into the mortar joints.
Further, the distance between the upper short steel bar and the lower short steel bar is the height of 3 blocks.
Further, the width of the communication groove is not less than 50 mm.
Further, the step S5 includes the following steps: before pouring concrete, cement mortar with the thickness of 50mm and the same proportion with the core column concrete is poured into the core column hole.
Further, the core column is an L-shaped or T-shaped or straight-line-shaped or cross-shaped or end core column.
The invention has the advantages that:
1. because the construction process is that the core column reinforcing steel bars are fixedly connected and then built, the installation of the core column reinforcing steel bars is not limited by a vertical space, the binding or welding quality of the joint is ensured, the positions of the reinforcing steel bars can be positioned by the short reinforcing steel bars in the building process, and the positions are accurate;
2. the bottom cleaning port is communicated with the communicating groove, so that garbage in the core column hole can be cleaned conveniently, and the mold sealing work amount is reduced;
3. the communication groove is formed, so that concrete can freely flow during pouring through the core column reinforcing steel bars (if the communication groove is not formed, the building blocks need to be inserted from the top end of the core column reinforcing steel bars);
4. the cast-in-place frame structure can be continuously constructed, and the working procedure of building the small hollow building blocks can be carried out on non-critical lines, so that the construction period can be shortened.
Drawings
FIG. 1 is a schematic view showing a structure of an L-shaped core pillar falling on the ground in example 1;
FIG. 2 is a schematic view showing an even-numbered skin structure of an L-shaped core column in example 1;
FIG. 3 is a schematic view of an odd-numbered skin configuration of an L-core column of example 1;
FIG. 4 is a schematic view showing a T-core pillar subfloor configuration in example 2;
FIG. 5 is a schematic view showing an even-numbered skin structure of the T-shaped core column of example 2;
FIG. 6 is a schematic view showing an odd-numbered skin configuration of the T-core column of example 2;
FIG. 7 is a schematic view of a floor slab structure of a linear-shaped core column in embodiment 3;
FIG. 8 is a schematic view of an even-numbered sheath structure of a straight stem in example 3;
FIG. 9 is a schematic view showing the odd-numbered skins of the straight stem in example 3;
FIG. 10 is a schematic view of a floor covering structure with a cross-shaped stem in embodiment 4;
FIG. 11 is a schematic diagram of an even-numbered sheath structure of the cross-shaped stem in example 4;
FIG. 12 is a schematic view showing an odd-numbered skin structure of the cross-shaped stem in example 4;
FIG. 13 is a schematic view of the structure of the end stem of the floor covering of example 5;
FIG. 14 is a schematic view of an even-numbered skin structure of the end stem in example 5;
FIG. 15 is a schematic view of an odd-numbered skin structure of the end stem in example 5;
FIG. 16 is a schematic view of the fastening of the core steel bars and the reserved steel bars in the embodiment;
description of the reference symbols
1 half-length building block, 2 full-length building blocks, 3 seven-minute long building blocks, 4 core columns, 5 core column reinforcing steel bars, 6 cleaning openings and 7 communicating grooves.
Detailed Description
The present invention will be described in further detail with reference to examples.
A construction process for a small hollow block steel concrete core column comprises the following steps:
s1: fixedly connecting the core column reinforcing steel bars 5 with the reserved reinforcing steel bars at the positions of the core columns 4; as shown in fig. 16, when the frame main body is constructed, reserved steel bars are arranged on the top surface (or floor surface) of a foundation and the bottom (or slab bottom) of a beam, the core column steel bars 5 are connected with the reserved steel bars through binding or welding, the length of the reserved steel bars and the welding length are set according to the specification, and if the setting points of the core column steel bars 5 are located at construction joints, in order to ensure connection with core column concrete, the concrete surface at the construction joints needs to be roughened. Because the construction process is that the core column reinforcing steel bars are fixedly connected and then built, the installation of the core column reinforcing steel bars 5 is not limited by a vertical space, the convenience of construction is greatly improved, and the binding or welding quality of the joints can be ensured.
S2: building blocks, wherein a plurality of core column holes are formed in the hole building of the blocks at the position of a core column 4, as shown in figures 1-15, a core column reinforcing steel bar 5 is arranged in each core column hole, a communicating groove 7 for communicating adjacent core column holes is formed in a skin block after the skin block is built, and a cleaning opening 6 communicated with the core column holes is formed in the position of the lowest skin block. The building blocks used at the core column 4 can be divided into a full-length building block 2, a seven-minute long building block 3 and a half-long building block 1, wherein the full-length building block 2 has the specification: 390X 190 mm; the seven-minute long building block 3 has the specification: 290X 190 mm; the specification of the half-length building block 1 is as follows: 190 x 190mm, half-length blocks 1 are divided into U-shape and L-shape, and the required configuration of the core column 4, such as L-shape or T-shape or straight shape or cross-shape or end core column, is built by the blocks of three specifications. During masonry, the communicating groove 7 is formed in the building block, and the core column reinforcing steel bars 5 penetrate through the building block from the communicating groove 7, so that construction convenience is improved; during pouring, concrete can flow from the communicating grooves 7, so that the concrete in each core column hole can form a whole, the structural integrity and the strength of the core column 4 are improved, and preferably, the width of the communicating grooves 7 is 50-100 mm.
In addition, when the building block is built by laying bricks or stones, can insert the short reinforcing bar in the mortar joint, the short reinforcing bar is used for with 5 ligatures of stem reinforcing bar or welded connection to make things convenient for stem reinforcing bar 5's location, as preferred, the interval of two upper and lower short reinforcing bars is the height of 3 skin building blocks.
S4: after the building blocks are built to the designed elevation and the strength of the building mortar is more than 1MPa (during building, burrs in the building block holes are removed at any time, the mortar extruded from mortar joints is scraped completely), the garbage in the core column holes is washed by water, and the washed garbage is discharged from the cleaning opening 6 and then blocks the cleaning opening 6;
s5: in order to prevent the phenomenon of column bottom cavity or root rot after the concrete of the core column 4 is poured, cement mortar with the thickness of 50mm and the same proportion with the concrete of the core column is poured into the core column hole before the concrete of the core column is poured, and then the concrete is poured into the core column hole and is compacted. The concrete of the core column 4 can be self-compacting fine-stone concrete preferentially, or common concrete with slump not less than 70mm, the common concrete is vibrated once at the height of 300-500 mm when poured, secondary vibration is carried out after excessive moisture is absorbed by the building blocks within 3-5 min, and the concrete is vibrated after the condition that the concrete is poured in place for one time is strictly forbidden; during vibrating, a small vibrating rod with the diameter of 30 is placed in each core column hole, and the small vibrating rod vibrates and pulls out along with the height of the irrigation each time. In addition, as the section size of the core column 4 is small, the core column should be built for about 2m (along with the elevation of the lintel and the tie beam) and poured once; and (3) arranging a horn mouth for pouring under the beam or the slab by 2 pieces of building blocks, and chiseling off concrete protruding out of the wall surface by manpower after pouring is finished for 1 day.
Example 1:
fig. 1-3 are schematic diagrams of the L-shaped core column building form and the position of the communicating groove 7, the core column 4 of the embodiment is L-shaped, each sheet of the L-shaped core column 4 is composed of three full-length building blocks, three core column holes are formed, the three core column holes are communicated through the communicating groove 7, and the building block falling to the ground is provided with a cleaning opening 6.
Example 2:
fig. 4-6 are schematic diagrams showing the T-shaped core column building form and the opening position of the communicating groove 7, the core column 4 of the embodiment is T-shaped, and four core column holes of the T-shaped core column 4 are provided. The falling skin of the T-shaped core column is composed of a full-length building block 2 and two half-long U-shaped building blocks, wherein the full-length building block 2 is provided with a communicating groove 7, the opening end of each U-shaped building block is equivalent to the communicating groove 7, and a cleaning opening 6 is formed between the two U-shaped building blocks. The even number skin of the T-shaped core column is composed of two seven-minute long building blocks 3 and a full-length building block 2, and the seven-minute long building blocks 3 and the full-length building block 2 are provided with communicating grooves 7. The odd number skin of T type stem comprises four full length building blocks 2, has seted up intercommunication groove 7 on the full length building block 2.
Example 3:
fig. 7 to 9 are schematic diagrams of a straight core column building form and a position where the communicating groove 7 is opened, the core column 4 of the present embodiment is a straight core column, there are three core column holes of the straight core column, and the three core column holes are communicated through the communicating groove 7. The floor slabs, the odd slabs and the even slabs of the straight core column are all composed of three full-length building blocks 2, and the building blocks of the floor slabs are provided with cleaning openings 6.
Example 4:
fig. 10 to 12 are schematic diagrams showing the assembling form of the cross-shaped core column and the opening position of the communicating groove 7, the core column 4 of the embodiment is cross-shaped, and five core column holes of the cross-shaped core column are provided. The floor skin of the cross-shaped core column comprises four full-length building blocks 2, two half-length U-shaped building blocks and two half-length L-shaped building blocks, the U-shaped building blocks and the L-shaped building blocks form five core column holes which are communicated with each other, and an opening surface of the L-shaped building blocks communicated with the outside forms a cleaning opening 6. The even number skin of the cross-shaped core column is composed of four full-length building blocks 2, and one end of each full-length building block 2, which is positioned in the core column hole, is provided with a communicating groove 7. The odd skin of the cross-shaped core column is composed of four half-long U-shaped building blocks and four full-length building blocks 2, and five core column holes which are communicated with each other are formed in the four U-shaped building blocks.
Example 5:
fig. 13-15 are schematic diagrams showing the end core column building form and the opening position of the communicating groove 7, the core column 4 of the embodiment is an end core column, the end core column is provided with a core column hole, the floor falling skin of the end core column is composed of a half-long U-shaped building block and a full-length building block 2, and the opening end of the U-shaped building block forms a cleaning opening 6. Even number skin of tip stem comprises two full length building blocks 2, and intercommunication groove 7 is seted up in full length building block 2 one side near the stem hole, and when the concreting, need be with this intercommunication groove 7 shutoff. The odd skin of the end core column is composed of a half-long U-shaped block and a full-length block 2.
Claims (4)
1. A construction process for a small hollow block steel concrete core column is characterized by comprising the following steps: the method comprises the following steps:
s1: fixedly connecting the core column reinforcing steel bars with the reserved reinforcing steel bars at the core column position;
s2: building blocks, wherein a plurality of core column holes are formed in the hole building of the blocks at the core column position, core column reinforcing steel bars are arranged in each core column hole, a communicating groove for communicating adjacent core column holes is formed in the skin block after one skin of block is built, a cleaning opening communicated with the core column holes is formed in the position of the lowest skin of block, and the width of the communicating groove is not less than 50 mm;
s4: after the building blocks are built to the designed elevation and the strength of the building mortar is more than 1MPa, flushing the garbage in the core column holes with water, and plugging the cleaning holes after the flushed garbage is discharged from the cleaning holes;
s5: pouring concrete in the core column hole and compacting;
the core column is T-shaped or cross-shaped or end core column;
when the core column is T-shaped, the landing skin of the T-shaped core column is composed of a full-length building block and two half-long U-shaped building blocks, wherein a communicating groove is formed in the full-length building block, the opening end of each U-shaped building block is equivalent to the communicating groove, a cleaning opening is formed between the two U-shaped building blocks, the even skin of the T-shaped core column is composed of two seven-minute long building blocks and one full-length building block, the seven-minute long building blocks and the full-length building block are provided with the communicating grooves, the odd skin of the T-shaped core column is composed of four full-length building blocks, and the full;
when the core column is in a cross shape, the floor skin of the cross-shaped core column is provided with four full-length building blocks, two half-length U-shaped building blocks and two half-length L-shaped building blocks, the U-shaped building blocks and the L-shaped building blocks form core column holes which are mutually communicated, an opening surface of the L-shaped building blocks communicated with the outside forms a cleaning opening, an even skin of the cross-shaped core column is formed by the four full-length building blocks, one end of the full-length building block, which is positioned in the core column hole, is provided with a communicating groove, an odd skin of the cross-shaped core column is formed by the four half-length U-shaped building blocks and the four full-length building blocks, and;
when the core column is an end core column, only one core column hole is formed, the floor-falling skin of the end core column is composed of a half-long U-shaped building block and a full-length building block, and a cleaning opening is formed at the opening end of the U-shaped building block; the even number skin of the end part core column is composed of two full-length building blocks, the communication groove is formed in one side, close to the core column hole, of the full-length building block, and the communication groove needs to be plugged when concrete is poured; the odd skin of the end core column is composed of a half-long U-shaped building block and a full-length building block.
2. The construction process of the small hollow block steel concrete core column as claimed in claim 1, wherein: the step S2 further includes the following steps: and in the building process of the building block, short reinforcing steel bars fixedly connected with the core column reinforcing steel bars are inserted into the mortar joints.
3. The construction process of the small hollow block steel concrete core column as claimed in claim 2, wherein: the distance between the upper short steel bar and the lower short steel bar is the height of 3 blocks.
4. The construction process of the small hollow block steel concrete core column as claimed in claim 1, wherein: the step S5 further includes the following steps: before pouring concrete, cement mortar with the thickness of 50mm and the same proportion with the core column concrete is poured into the core column hole.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202466927U (en) * | 2011-11-30 | 2012-10-03 | 长沙华坤建材科技有限公司 | Aligning type double-opening small-size concrete building block |
| CN105908858A (en) * | 2016-06-03 | 2016-08-31 | 赤峰京环节能建材制造有限公司 | Linkage building block, building block wall and construction method of building block wall |
| CN205637305U (en) * | 2015-11-25 | 2016-10-12 | 承德明德建材制造有限公司 | Building block material unit and butt -joint structural thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2594908C (en) * | 2007-07-23 | 2015-12-22 | Casey Moroschan | Hollow core block stabilization system |
| CN103334534B (en) * | 2013-06-12 | 2016-03-16 | 刘亦宽 | Earthquake-proof energy-saving reinforced masonry dedicated building block |
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- 2019-10-10 CN CN201910956837.6A patent/CN110670760B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202466927U (en) * | 2011-11-30 | 2012-10-03 | 长沙华坤建材科技有限公司 | Aligning type double-opening small-size concrete building block |
| CN205637305U (en) * | 2015-11-25 | 2016-10-12 | 承德明德建材制造有限公司 | Building block material unit and butt -joint structural thereof |
| CN105908858A (en) * | 2016-06-03 | 2016-08-31 | 赤峰京环节能建材制造有限公司 | Linkage building block, building block wall and construction method of building block wall |
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