CN117489152A - Reinforced reinforcing structure for two-way plate floor slab hole and construction method thereof - Google Patents
Reinforced reinforcing structure for two-way plate floor slab hole and construction method thereof Download PDFInfo
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- CN117489152A CN117489152A CN202311738831.4A CN202311738831A CN117489152A CN 117489152 A CN117489152 A CN 117489152A CN 202311738831 A CN202311738831 A CN 202311738831A CN 117489152 A CN117489152 A CN 117489152A
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- ribs
- hole
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- 238000010276 construction Methods 0.000 title abstract description 26
- 230000003014 reinforcing effect Effects 0.000 title description 17
- 230000002787 reinforcement Effects 0.000 claims abstract description 38
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 210000003205 muscle Anatomy 0.000 claims description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a reinforcement structure of a two-way plate floor hole and a construction method thereof, wherein the reinforcement structure comprises at least two rows of transverse ribs and at least two rows of longitudinal ribs which are arranged around the periphery of the floor hole, two ends of each longitudinal rib are used for being anchored into walls on two sides of the floor, the anchoring length of each end of each longitudinal rib is not less than five times the diameter of each longitudinal rib and extends out of the center line of the wall, two ends of each transverse rib are used for being anchored into the walls on two sides of the floor, and the anchoring length of each end of each transverse rib is not less than five times the diameter of each transverse rib and extends out of the center line of the wall. The invention solves the technical problems that the periphery of the reserved hole of the two-way plate cast-in-situ floor slab is not effectively reinforced and is not suitable for other construction operations in the prior art, the periphery of the hole is reinforced, the requirement of bearing capacity increase around the hole is met, meanwhile, the construction safety at the hole is ensured, the construction efficiency is improved, and the construction difficulty is reduced.
Description
Technical Field
The invention relates to the field of building construction, in particular to a two-way slab floor hole reinforcement structure and a construction method thereof.
Background
The reserved hole is usually reserved in the cast-in-situ floor slab, the long side of the reserved hole is less than or equal to 1000mm, the reserved hole is generally used for reserving fire fighting, water supply and drainage, air conditioning pipelines and the like, and the reserved hole can be used for up-and-down transportation of relevant construction materials of the floor slab. Therefore, the reserved hole has higher requirements on the aspects of quality safety such as load, stress and the like. The two-way plate is a floor slab with the ratio of a long span to a short span being less than or equal to 2, when the reserved hole of the floor slab is positioned at the edge of the floor slab and the middle part of the floor slab, different reinforcements are needed, the strength around the reserved hole in the prior art is not effectively reinforced, so that the safety is lower, and the safety around the hole can not be ensured when the two-way plate is used for application; the reserved hole reinforcing structure in the prior art has low applicability and can only be used for partial holes with low bearing effect; the construction difficulty is increased, and the steel bars with different diameters need to be additionally considered for blanking.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a reinforcing structure for a hole of a two-way slab floor and a construction method thereof, which solve the technical problems that the periphery of a reserved hole of a two-way slab cast-in-situ floor in the prior art is not effectively reinforced and is not suitable for other construction operations.
In a first aspect, the invention discloses a reinforcement structure for a two-way slab floor hole, comprising at least two rows of transverse ribs and at least two rows of longitudinal ribs, wherein the transverse ribs are arranged around the periphery of the floor hole, the length direction of the transverse ribs is consistent with the length direction of the floor, the length direction of the longitudinal ribs is consistent with the width direction of the floor, the two ends of the longitudinal ribs are used for being anchored into walls on two sides of the floor, the anchoring length of each end of each longitudinal rib is not less than five times the diameter of the longitudinal rib and extends out of the central line of the wall, the two ends of each transverse rib are used for being anchored into the walls on two sides of the floor, and the anchoring length of each end of each transverse rib is not less than five times the diameter of each transverse rib and extends out of the central line of the wall.
The reinforced reinforcing structure for the two-way slab floor hole is further improved in that the sum of the cross-sectional areas of the two rows of transverse ribs and the two rows of longitudinal ribs is not less than half of the sum of the cross-sectional areas of all the truncated floor steel bars at the hole.
The reinforcement structure for the two-way slab floor hole reinforcement is further improved in that each row of longitudinal ribs comprises an upper rib and a lower rib positioned below the upper rib.
The reinforcement structure for the two-way slab floor opening reinforcement is further improved in that stirrup bars for limiting the distance are arranged between the upper side ribs and the lower side ribs.
The reinforced reinforcement structure for the two-way plate floor slab hole is further improved in that when the floor slab hole is located at the overhanging position, a temporary reinforcement group is anchored between the floor slab hole and an adjacent beam body.
The invention further improves the reinforcement structure of the two-way slab floor hole, wherein the number of the adjacent rib groups is multiple, and the multiple adjacent rib groups are distributed at intervals along the length direction of the beam body.
The reinforcement structure for the two-way slab floor hole reinforcement is further improved in that the temporary span reinforcement group comprises an upper anchor bar and a lower anchor bar positioned below the upper anchor bar.
The invention further improves the reinforcement structure of the two-way slab floor hole, wherein both ends of the upper anchor bar are provided with downward bent anchor sections.
In a second aspect, the invention also provides a construction method of the reinforced structure of the two-way slab floor hole, which comprises the following steps: before binding the floor slab reinforcing steel bars, providing a longitudinal rib with the anchoring length of each end not less than five times the diameter of the longitudinal rib and capable of extending out of the central line of the wall, and providing a transverse rib with the anchoring length of each end not less than five times the diameter of the transverse rib and extending out of the central line of the wall; when the floor slab reinforcement is bound, binding at least two rows of transverse ribs and at least two rows of longitudinal ribs on the floor slab reinforcement at the periphery of the floor slab hole, so that the at least two rows of transverse ribs and the at least two rows of longitudinal ribs are enclosed in the floor slab hole, the length direction of the transverse ribs is consistent with the length direction of the floor slab, and the length direction of the longitudinal ribs is consistent with the width direction of the floor slab; when the wall body is poured, the two ends of at least two rows of longitudinal ribs are anchored into the wall bodies on the two sides of the floor slab, and the two ends of at least two rows of transverse ribs are anchored into the wall bodies on the two sides of the floor slab. .
Compared with the prior art, the invention has positive and obvious effects. According to the invention, the transverse ribs and the longitudinal ribs are used for further reinforcing the floor slabs around the floor slab hole, so that the technical problem that the reserved hole of the two-way slab cast-in-situ floor slab is not effectively reinforced but is not suitable for other construction operations in the prior art is solved, the periphery of the hole is reinforced, the requirement of bearing capacity increase around the hole is met, meanwhile, the construction safety at the hole is ensured, the construction efficiency is improved, and the construction difficulty is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a top view of a two-way slab floor slab hole reinforcement structure of the present invention in a position where the slab hole is located in the middle of the slab.
Fig. 2 is a top view of the reinforcement structure for the two-way slab floor slab hole in the edge position of the floor slab at the floor slab hole.
Fig. 3 is a cross-sectional view of the reinforcement structure for the hole reinforcement of the two-way slab floor in the fixing of the longitudinal ribs and stirrup ribs.
Fig. 4 is a schematic view of a vertical mold structure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the invention provides a reinforcement structure for a two-way slab hole, which comprises at least two rows of transverse ribs 1 and at least two rows of longitudinal ribs 2, wherein the transverse ribs 1 are arranged around the periphery of the slab hole 3, the length direction of the transverse ribs 1 is consistent with the length direction of the slab, the length direction of the longitudinal ribs 2 is consistent with the width direction of the slab, two ends of the longitudinal ribs 2 are used for being anchored into walls on two sides of the slab, the anchoring length of each end of the longitudinal ribs 2 is not less than five times the diameter of the longitudinal ribs 2 and extends out of the center line of the wall, two ends of the transverse ribs 1 are used for being anchored into the walls on two sides of the slab, and the anchoring length of each end of the transverse ribs 1 is not less than five times the diameter of the transverse ribs 1 and extends out of the center line of the wall. The arrangement states of the transverse ribs 1 and the longitudinal ribs 2 around the floor slab hole 3 are in a groined shape, namely corresponding reinforcing steel bars are arranged around the floor slab hole 3. The edge position of the floor slab is a wall body 4, and also can be a beam body, if the floor slab is a beam body, two ends of the longitudinal ribs 2 are anchored into the beam body, so that the requirement that the stress around the floor slab hole 3 is directly transmitted into the beam body or the wall body 4 when the hole is subjected to other operation and construction is met, the strength of the floor slab around the floor slab hole 3 is ensured, and the floor slab is prevented from being damaged.
Preferably, the sum of the cross-sectional areas of the two rows of transverse ribs 1 and the two rows of longitudinal ribs 2 is not less than half the sum of the cross-sectional areas of all the truncated floor rebars at the opening. When four reinforcing bars with the diameter of 12mm are cut off at the opening, the sum S=6×6×3.14×4= 452.16mm of the cross sectional areas of the reinforcing bars of the cut-off floor slab 2 Half of the area is 226.08mm 2 The area is calculated to be the steel bar, namely two steel bars with the diameter of 12 mm. Therefore, in preparing the reinforcing bars, it should be ensured that the sum of the cross-sectional areas of the transverse bars 1 and the longitudinal bars 2 satisfies the above-mentioned requirement so as to satisfy the tensile strength.
Preferably, as shown in fig. 3, each row of the longitudinal ribs 2 includes an upper rib 6 and a lower rib 7 located below the upper rib 6, and each row of the transverse ribs 1 includes an upper rib and a lower rib located below the upper rib. The manner of arranging the reinforcing bars can further improve the strength of the floor around the floor hole 3 so as to meet the requirement of carrying out other construction operations through the floor hole 3. As shown in fig. 4, a vertical die 5 is installed on the inner wall of the opening so as to form the floor opening 3, and an opening for the floor steel bar to pass through is arranged on the vertical die 5. After concrete pouring, the upper side rib 6 and the upper portion of the upper rib are the upper surface protection layers of the floor slab, and the lower side rib 7 and the lower portion of the lower rib are the lower surface protection layers of the floor slab.
Preferably, stirrups 8 for limiting the distance are provided between the upper ribs 6 and the lower ribs 7. Stirrup bars 8 are also fixed between the upper bars and the lower bars. Specifically, this stirrup muscle 8 is the zigzag, and the upper surface of stirrup muscle 8 is fixed with upside muscle 6, and Ma Dengjin's lower surface is fixed with downside muscle 7, and the fixed mode can adopt iron wire ligature to be fixed, through the supporting role of this stirrup muscle 8 to prevent to pile up building material on the floor upper reinforcing bar and the upper reinforcing bar that leads to crooked downwards, and then influence the construction quality of floor.
Preferably, when the floor slab hole 3 is located at the overhanging position, a set of adjacent ribs is anchored between the floor slab hole 3 and the adjacent beam body 4. Only when the distance between the floor hole 3 and the overhanging Liang Tixiao is 50cm, the temporary span rib group is additionally added, so that the strength of the overhanging floor around the floor hole 3 is further improved, and the overhanging floor meets the requirements of other construction operations.
Preferably, the number of the adjacent rib groups is plural, and the plural adjacent rib groups are arranged at intervals along the length direction of the beam body 4. Specifically, when the plate thickness is less than or equal to 190mm, the diameter of the adjacent span bar group is not less than A, A=10mm tertiary reinforcing bars (interval 200 mm), when the plate thickness is less than or equal to 190mm, A=10mm tertiary reinforcing bars (interval 150 mm), when the plate thickness is less than or equal to 260mm, A=10mm tertiary reinforcing bars (interval 100 mm).
Preferably, the set of temporary bars comprises an upper bar 10 and a lower bar 9 located below the upper bar 10. Through double-deck reinforcing bar arrangement for the floor between roof beam body 4 and the entrance to a cave obtains further reinforcement.
Preferably, both ends of the upper anchor bar 10 are provided with downward bent anchor sections. Specifically, the length of the bent anchor section is not less than 15 times of the diameter of the upper anchor bar 10, so that the ductility and toughness of the upper anchor bar 10 are further improved, the earthquake resistance of the floor slab is improved, and the bearing capacity of the floor slab is improved.
On the other hand, the invention also provides a construction method of the reinforced structure of the two-way slab floor hole, which comprises the following steps: before the floor slab reinforcement is bound, providing a longitudinal rib 2 with an anchoring length of each end not less than five times the diameter of the longitudinal rib 2 and capable of extending out of the center line of the wall, and providing a transverse rib 1 with an anchoring length of each end not less than five times the diameter of the transverse rib 1 and extending out of the center line of the wall; when the floor slab reinforcement is bound, at least two rows of transverse ribs 1 and at least two rows of longitudinal ribs 2 are bound on the floor slab reinforcement at the periphery of the floor slab hole 3, so that the at least two rows of transverse ribs 1 and the at least two rows of longitudinal ribs 2 are enclosed in the floor slab hole 3, the length direction of the transverse ribs 1 is consistent with the length direction of the floor slab, and the length direction of the longitudinal ribs 2 is consistent with the width direction of the floor slab; when the wall casting is carried out, two ends of at least two rows of longitudinal ribs 2 are anchored into the walls on two sides of the floor slab, and two ends of at least two rows of transverse ribs 1 are anchored into the walls on two sides of the floor slab.
Specifically, before carrying out the binding of floor reinforcing steel bars, the vertical die 5 of floor opening 3 is manufactured, the floor bottom template is erected, then the vertical die 5 is installed, then the transverse ribs 1 and the longitudinal ribs 2 are bound with the floor reinforcing steel bars, then the stirrup ribs 8 are bound, then concrete pouring is carried out, after the concrete reaches the design strength, the floor template and the vertical die 5 are removed, then the floor opening 3 can be used for other subsequent construction, if the floor opening is used only as a temporary opening, and after the floor opening 3 is completely used, pouring and plugging are carried out.
According to the invention, the transverse ribs and the longitudinal ribs are used for further reinforcing the floor slabs around the floor slab hole, so that the technical problem that the reserved hole of the two-way slab cast-in-situ floor slab is not effectively reinforced but is not suitable for other construction operations in the prior art is solved, the periphery of the hole is reinforced, the requirement of bearing capacity increase around the hole is met, meanwhile, the construction safety at the hole is ensured, the construction efficiency is improved, and the construction difficulty is reduced.
None of the inventions are related to the same or are capable of being practiced in the prior art. The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a two-way board floor entrance to a cave reinforcement structure, its characterized in that, including enclosing the peripheral at least two rows of horizontal muscle of locating the floor entrance to a cave and two at least rows of vertical muscle, the length direction of horizontal muscle with the length direction of floor is unanimous, the length direction of vertical muscle with the width direction of floor is unanimous, the both ends of vertical muscle are used for the anchor to in the wall body of floor both sides, the anchor length at vertical muscle each end is not less than five times the diameter of vertical muscle and extends the central line of wall body, the both ends of horizontal muscle are used for the anchor to in the wall body of floor both sides, the anchor length at horizontal muscle each end is not less than five times the diameter of horizontal muscle and extend the central line of wall body.
2. The reinforcement structure for a two-way slab floor opening according to claim 1, wherein the sum of the cross-sectional areas of two rows of the transverse ribs and two rows of the longitudinal ribs is not less than half of the sum of the cross-sectional areas of all the truncated floor rebars at the opening.
3. The bi-directional board floor tunnel portal reinforcement structure of claim 1, wherein each row of said longitudinal ribs comprises an upper rib and a lower rib below said upper rib.
4. A bi-directional slab floor opening reinforcement structure according to claim 3, wherein stirrups for limiting the distance are provided between the upper ribs and the lower ribs.
5. The bi-directional slab floor slab portal reinforcement structure of claim 1, wherein when the slab floor portal is in a overhanging position, an anchor is provided between the slab floor portal and an adjacent beam body to span the set of tendons.
6. The two-way slab floor opening reinforcement structure according to claim 5, wherein the number of the adjacent rib groups is plural, and the plural adjacent rib groups are distributed at intervals along the length direction of the beam body.
7. The bi-directional board floor tunnel portal reinforcement structure of claim 5, wherein the set of temporary spans comprises an upper anchor bar and a lower anchor bar positioned below the upper anchor bar.
8. The two-way slab floor opening reinforcement structure according to claim 7, wherein both ends of the upper anchor bar are provided with downward bent anchor sections.
9. A method of constructing a bi-directional slab floor opening reinforcement structure as claimed in claim 1, comprising the steps of:
before binding the floor slab reinforcing steel bars, providing longitudinal ribs with the anchoring length of each end not less than five times the diameter of the longitudinal ribs and capable of extending out of the central line of the wall body, and providing transverse ribs with the anchoring length of each end not less than five times the diameter of the transverse ribs and extending out of the central line of the wall body;
when the floor slab reinforcement is bound, binding at least two rows of transverse ribs and at least two rows of longitudinal ribs on the floor slab reinforcement at the periphery of the floor slab hole, so that the at least two rows of transverse ribs and the at least two rows of longitudinal ribs are enclosed in the floor slab hole, the length direction of the transverse ribs is consistent with the length direction of the floor slab, and the length direction of the longitudinal ribs is consistent with the width direction of the floor slab;
and when the wall body is poured, the two ends of at least two rows of longitudinal ribs are anchored into the wall bodies on the two sides of the floor slab, and the two ends of at least two rows of transverse ribs are anchored into the wall bodies on the two sides of the floor slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311738831.4A CN117489152A (en) | 2023-12-18 | 2023-12-18 | Reinforced reinforcing structure for two-way plate floor slab hole and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311738831.4A CN117489152A (en) | 2023-12-18 | 2023-12-18 | Reinforced reinforcing structure for two-way plate floor slab hole and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117489152A true CN117489152A (en) | 2024-02-02 |
Family
ID=89676638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311738831.4A Pending CN117489152A (en) | 2023-12-18 | 2023-12-18 | Reinforced reinforcing structure for two-way plate floor slab hole and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117489152A (en) |
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2023
- 2023-12-18 CN CN202311738831.4A patent/CN117489152A/en active Pending
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