CN111764522A - Anti-leakage building floor post-cast strip structure and pouring method - Google Patents
Anti-leakage building floor post-cast strip structure and pouring method Download PDFInfo
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- CN111764522A CN111764522A CN202010602888.1A CN202010602888A CN111764522A CN 111764522 A CN111764522 A CN 111764522A CN 202010602888 A CN202010602888 A CN 202010602888A CN 111764522 A CN111764522 A CN 111764522A
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- post
- cast strip
- building floor
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to an anti-leakage building floor post-pouring belt structure which comprises a building floor with a reserved straight raft, wherein the upper edge and the lower edge of one side, facing the straight raft, of the building floor are respectively provided with an inclined notch, a lower layer post-pouring belt and an upper layer post-pouring belt are formed in the straight raft in a pouring mode, reinforcing steel bars located at the bottom of the straight raft are embedded in the lower layer post-pouring belt, and the thickness of the lower layer post-pouring belt is smaller than 1/2 of the thickness of the building floor. The beneficial effects are that: the arrangement of the notch increases the contact area between the lower-layer post-cast strip and the building floor slab, increases the occlusion degree, and reduces the risk of cracks between the later-stage lower-layer post-cast strip and the building floor slab; pour respectively and form lower floor post-cast strip and upper strata post-cast strip, prevent that the less easy excessive vibration of concrete volume from leading to the concrete to take place the segregation phenomenon in the one shot forming, guarantee the structural strength of concrete, reduce later stage seepage risk.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a post-cast strip structure of an anti-leakage building floor slab and a pouring method.
Background
According to the national standard: the concrete structure engineering construction specification 2.0.10 post-cast strip is defined as follows: in order to adapt to the influence of factors such as environmental temperature change, concrete shrinkage and uneven settlement of a structure, a concrete strip which has a certain width and is poured after a certain time is reserved in structures such as beams, plates (including foundation bottom plates) and walls.
The existing post-cast strip is reserved and is mostly reserved with straight branches, so that the concrete is poor in connectivity after being filled, and the post-cast strip cracking risk is increased.
The mode is pour mostly once to current post-cast strip and is pour the shaping, appears vibrating too abundant condition easily for coarse aggregate concentrates in the post-cast strip bottom, has reduced the self waterproof nature in post-cast strip, increases later stage seepage risk.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, provides a post-cast strip structure of an anti-leakage building floor slab and a pouring method of the post-cast strip of the anti-leakage building floor slab.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the utility model provides an antiseep building floor post-cast strip structure, has the building floor of straight raft including reserving, building floor opens respectively towards the upper edge and the lower limb of straight raft one side and chisels the opening that has the slope, pour in the straight raft and form lower floor post-cast strip and upper layer post-cast strip, be located the reinforcing bar embedding of straight raft bottom is in lower floor post-cast strip, the thickness in lower floor post-cast strip is less than 1/2 of building floor thickness.
Further, the inclination angle of the gap is 45 degrees.
Further, the depth of the gap is less than or equal to 2/5 of the thickness of the building floor slab.
Furthermore, a sawtooth-shaped groove is chiseled on the surface of the building floor slab at the opening.
Furthermore, the concrete strength grade of the lower-layer post-cast strip and the upper-layer post-cast strip is at least one grade higher than that of the building floor slab.
A method for pouring a post-cast strip of an anti-leakage building floor slab is used for pouring the post-cast strip structure of the anti-leakage building floor slab, and comprises the following steps:
s1, when the building floor meets the construction conditions of the post-cast strip, chiseling the upper edge and the lower edge of the side, facing the straight racking, of the building floor respectively to form inclined notches, then chiseling loose concrete thoroughly, and cleaning and washing the surfaces of the notches;
s2, building a template under the straight branches, wherein the top surface of the template is abutted with the bottom surface of the building floor slab;
s3, pouring in the straight branches to form a lower layer post-pouring belt, embedding the steel bars in the straight branches, wherein the thickness of the lower layer post-pouring belt is less than 1/2 of the thickness of a building floor slab;
s4, after the lower post-cast strip is solidified, casting an upper post-cast strip on the lower post-cast strip to enable the top surface of the upper post-cast strip to be flush with the top surface of the building floor slab;
and S5, performing moisture preservation and maintenance on the lower-layer post-cast strip and the upper-layer post-cast strip.
Further, the top surface of the lower layer post-cast strip is subjected to surface roughening treatment before the lower layer post-cast strip is not completely solidified.
Further, the lower floor post-cast strip uses the vibrating rod to vibrate closely when pouring, the upper floor post-cast strip uses the flat vibrator to vibrate closely when pouring.
The invention has the beneficial effects that: inclined notches are respectively chiseled at the upper edge and the lower edge of one side, facing to the straight racking, of the building floor slab, a lower-layer post-cast strip and an upper-layer post-cast strip are formed in the straight racking in a pouring mode, the contact area between the lower-layer post-cast strip and the building floor slab is increased due to the arrangement of the notches, the occlusion degree is increased, and the risk of cracks between the later-stage lower-layer post-cast strip and the building floor slab is reduced; pour respectively and form lower floor post-cast strip and upper strata post-cast strip, prevent that the less easy excessive vibration of concrete volume from leading to the concrete to take place the segregation phenomenon in the one shot forming, guarantee the structural strength of concrete, reduce later stage seepage risk.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of a building floor slab with reserved straight branches in the embodiment of the invention;
FIG. 2 is a schematic structural view of a building floor slab with cutouts and installed templates according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a lower post-cast strip after casting in an embodiment of the invention;
FIG. 4 is a schematic structural diagram of the upper layer post-cast strip after casting in the embodiment of the invention;
fig. 5 is a schematic view of a part of the structure of a building floor slab according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 5, a antiseep building floor post-cast strip structure, including reserving building floor 1 that has straight racking 2, building floor 1 chisels respectively towards the upper edge and the lower limb of straight racking one side has the notch 3 of slope, pours formation lower floor post-cast strip 6 and upper strata post-cast strip 7 in the straight racking 2, and the reinforcing bar 4 that is located straight racking 2 bottom is embedded in lower floor post-cast strip 6, and the thickness of lower floor post-cast strip 6 is less than 1/2 of building floor 1 thickness.
The inclination angle of the notch 3 is 45 degrees, so that the thicknesses of the lower-layer post-cast strip 6 and the upper-layer post-cast strip 7 positioned at the notch 3 are moderate, and the risk of edge breakage of the lower-layer post-cast strip 6 and the upper-layer post-cast strip 7 is reduced. The depth of the gap 3 is less than or equal to 2/5 of the thickness of the building floor slab 1, so that the thickness of the building floor slab 1 at the gap 3 has enough supporting force for the lower post-cast strip 6 and the upper post-cast strip 7. Sawtooth-shaped grooves 8 are formed in the surface of the building floor slab 1 at the positions of the notches 3, the contact area between the upper post-cast strip 6 and the building floor slab 1 and the contact area between the lower post-cast strip 7 and the upper post-cast strip 6 are increased, and the firmness of adhesion between the upper post-cast strip 6 and the building floor slab 1 and the firmness of adhesion between the lower post-cast strip 7 and the building floor slab 1 are improved.
The concrete strength grade of the lower post-cast strip 6 and the upper post-cast strip 7 is at least one grade higher than that of the building floor slab 1, and the strength of the lower post-cast strip 6 and the upper post-cast strip 7 is improved.
A method for pouring a post-cast strip of an anti-leakage building floor slab is used for pouring the post-cast strip structure of the anti-leakage building floor slab, and comprises the following steps:
s1, when the building floor slab 1 meets the construction conditions of a post-cast strip, chiseling the upper edge and the lower edge of one side, facing to a straight raft, of the building floor slab 1 to form inclined notches 3 respectively, then chiseling loose concrete thoroughly, and cleaning and washing the surfaces of the notches 3;
s2, building a template 5 below the straight raft 2, wherein the top surface of the template 5 is abutted against the bottom surface of the building floor slab 1;
s3, pouring a lower layer post-pouring belt 6 in the straight racking 2, embedding the steel bars in the straight racking 2, wherein the thickness of the lower layer post-pouring belt 6 is less than 1/2 of the thickness of the building floor slab 1;
s4, after the lower post-cast strip 6 is solidified, casting an upper post-cast strip 7 on the lower post-cast strip 6 to enable the top surface of the upper post-cast strip 7 to be flush with the top surface of the building floor slab 1;
and S5, moisturizing and maintaining the lower post-cast strip 6 and the upper post-cast strip 7.
The top surface of the lower post-cast strip 6 is subjected to surface roughening treatment before the lower post-cast strip is completely solidified, so that the contact area between the upper post-cast strip 7 and the lower post-cast strip 6 is increased, and the bonding firmness between the upper post-cast strip 7 and the lower post-cast strip 6 is improved.
The lower post-cast strip 6 is compacted by vibration with a vibrating rod during casting, so that the lower post-cast strip 6 is compacted conveniently; the upper post-cast strip 7 is vibrated compactly by using a flat vibrator when being poured, so that the top surface of the upper post-cast strip is flush with the top surfaces of the building floor slabs 1 at two sides.
Inclined notches are respectively chiseled at the upper edge and the lower edge of one side, facing to the straight racking, of the building floor slab, a lower-layer post-cast strip and an upper-layer post-cast strip are formed in the straight racking in a pouring mode, the contact area between the lower-layer post-cast strip and the building floor slab is increased due to the arrangement of the notches, the occlusion degree is increased, and the risk of cracks between the later-stage lower-layer post-cast strip and the building floor slab is reduced; pour respectively and form lower floor post-cast strip and upper strata post-cast strip, prevent that the less easy excessive vibration of concrete volume from leading to the concrete to take place the segregation phenomenon in the one shot forming, guarantee the structural strength of concrete, reduce later stage seepage risk.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The utility model provides an antiseep building floor post-cast strip structure, has the building floor of straight raft including reserving, its characterized in that: building floor towards the upper edge and the lower limb of straight raft one side division chisel respectively have the opening of slope, pour in the straight raft and form lower floor post-cast strip and upper strata post-cast strip, lie in the reinforcing bar embedding of straight raft bottom is in lower floor post-cast strip, the thickness in lower floor post-cast strip is less than 1/2 of building floor thickness.
2. The anti-leakage building floor post-cast strip structure of claim 1, wherein: the inclination angle of the gap is 45 degrees.
3. The anti-leakage building floor post-cast strip structure of claim 1, wherein: the depth of the gap is less than or equal to 2/5 of the thickness of the building floor slab.
4. The anti-leakage building floor post-cast strip structure of claim 1, wherein: and a sawtooth-shaped groove is chiseled on the surface of the building floor slab at the opening.
5. The anti-leakage building floor post-cast strip structure of claim 1, wherein: the concrete strength grade of the lower layer post-cast strip and the upper layer post-cast strip is at least one grade higher than that of the building floor slab.
6. A pouring method of the anti-leakage building floor post-cast strip is used for pouring the anti-leakage building floor post-cast strip structure of any one of claims 1 to 5, and is characterized by comprising the following steps:
s1, when the building floor meets the construction conditions of the post-cast strip, chiseling the upper edge and the lower edge of the side, facing the straight racking, of the building floor respectively to form inclined notches, then chiseling loose concrete thoroughly, and cleaning and washing the surfaces of the notches;
s2, building a template under the straight branches, wherein the top surface of the template is abutted with the bottom surface of the building floor slab;
s3, pouring in the straight branches to form a lower layer post-pouring belt, embedding the steel bars in the straight branches, wherein the thickness of the lower layer post-pouring belt is less than 1/2 of the thickness of a building floor slab;
s4, after the lower post-cast strip is solidified, casting an upper post-cast strip on the lower post-cast strip to enable the top surface of the upper post-cast strip to be flush with the top surface of the building floor slab;
and S5, performing moisture preservation and maintenance on the lower-layer post-cast strip and the upper-layer post-cast strip.
7. The method for casting the anti-leakage building floor post-cast strip according to claim 6, wherein the method comprises the following steps: and the top surface of the lower-layer post-cast strip is subjected to surface roughening treatment before the lower-layer post-cast strip is not completely solidified.
8. The method for casting the anti-leakage building floor post-cast strip according to claim 6, wherein the method comprises the following steps: the lower floor post-cast strip uses the vibrating rod to vibrate closely when pouring, the upper floor post-cast strip uses the flat vibrator to vibrate closely when pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602888.1A CN111764522A (en) | 2020-06-29 | 2020-06-29 | Anti-leakage building floor post-cast strip structure and pouring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602888.1A CN111764522A (en) | 2020-06-29 | 2020-06-29 | Anti-leakage building floor post-cast strip structure and pouring method |
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| CN111764522A true CN111764522A (en) | 2020-10-13 |
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| CN202010602888.1A Pending CN111764522A (en) | 2020-06-29 | 2020-06-29 | Anti-leakage building floor post-cast strip structure and pouring method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137062A (en) * | 2021-05-10 | 2021-07-20 | 山西四建集团有限公司 | High-rise residential expansion type reinforcing belt construction method for replacing post-cast strip |
| CN113187092A (en) * | 2021-04-14 | 2021-07-30 | 浙江信宇建设集团有限公司 | Crack-proof long and narrow concrete structure and construction method thereof |
| CN113530148A (en) * | 2021-07-31 | 2021-10-22 | 中冶建工集团有限公司 | Pouring method of concrete terrace |
| CN113530147A (en) * | 2021-07-31 | 2021-10-22 | 中冶建工集团有限公司 | Terrace construction method capable of controlling elevation and flatness with high precision |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187092A (en) * | 2021-04-14 | 2021-07-30 | 浙江信宇建设集团有限公司 | Crack-proof long and narrow concrete structure and construction method thereof |
| CN113137062A (en) * | 2021-05-10 | 2021-07-20 | 山西四建集团有限公司 | High-rise residential expansion type reinforcing belt construction method for replacing post-cast strip |
| CN113530148A (en) * | 2021-07-31 | 2021-10-22 | 中冶建工集团有限公司 | Pouring method of concrete terrace |
| CN113530147A (en) * | 2021-07-31 | 2021-10-22 | 中冶建工集团有限公司 | Terrace construction method capable of controlling elevation and flatness with high precision |
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