CN111335669A - Bar planting reinforced structure made behind basement structure beam - Google Patents
Bar planting reinforced structure made behind basement structure beam Download PDFInfo
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- CN111335669A CN111335669A CN202010303182.5A CN202010303182A CN111335669A CN 111335669 A CN111335669 A CN 111335669A CN 202010303182 A CN202010303182 A CN 202010303182A CN 111335669 A CN111335669 A CN 111335669A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 238000004873 anchoring Methods 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 6
- 239000011376 self-consolidating concrete Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Foundations (AREA)
Abstract
The invention discloses a steel bar planting reinforcement structure made behind a basement structural beam, which is used for forming a new structural beam on an original structure through the steel bar planting reinforcement structure, wherein the steel bar planting reinforcement structure comprises a plurality of rows of steel bars which are implanted into the original structure and are longitudinally arranged, the lower two rows of steel bars penetrate through the original structure and are anchored on the original structure through an anchoring structure, the number of the lower two rows of steel bars and the number of the top rows of steel bars are 4, the number of the other rows of steel bars is 2, and a plurality of transversely arranged stirrups are bound among the plurality of rows of steel bars and concrete is poured to form the new structural beam. The method solves the problem that the reinforcing steel bar cannot be reserved in advance for construction because the inner support of the foundation pit and the structural beam of the basement in the influence range of the lattice column are not dismantled; the operation is simple, and no special professional requirements are required for constructors; the raw materials are common materials in construction sites and are easy to purchase; the method has stronger flexibility, and can be easily used for providing reference basis for the construction of newly added structural beams, cantilever beams and the like.
Description
Technical Field
The invention relates to the field of construction of constructional engineering, and particularly provides a reinforced structure for embedded steel bars made behind a basement structural beam.
Background
The conventional method for removing the inner support of the foundation pit is to construct a basement structure, construct a force transmission belt between the basement structure and an enclosure structure, remove the inner support after the strength reaches 80% of a design value, and continue to construct upwards. If a plurality of layers of basements and a plurality of inner supports exist, the construction is repeatedly and alternately carried out. However, under the condition that the adjacent subway is short and the construction period node is tense, the construction period is long due to the mode of firstly dismantling and supporting and then constructing the structure, and the adjacent subway is easily deformed and influenced by firstly dismantling and supporting. In order to accelerate the construction progress of the basement structure and reduce the deformation influence of construction on the adjacent subway, the inner support can be constructed in a mode that the basement structure is firstly made without being dismantled.
Because the inner support and the lattice column are not removed, the basement structure is crossed with the inner support and the lattice column or the distance is short, so that the beam of the structure of a part of the basement area can be constructed after the inner support and the lattice column are removed. The reinforcing steel bars are embedded in advance unconditionally on the site of the structural beam in the area, and reinforcing construction can be carried out only by adopting a bar planting mode after the inner support and the lattice column are dismantled. The basement structure beam is reinforced through the embedded steel bars, so that a new structure beam constructed later and an original structure constructed first are connected into a whole, and the structural bearing capacity of the basement structure beam meets the design requirement.
Disclosure of Invention
The invention aims to provide a reinforcement structure for planting bars, which is manufactured behind a basement structural beam and is used for solving the problem that the basement structural beam cannot reserve the bars in advance for construction within the influence range of the support and lattice column in a foundation pit without being dismantled.
The technical scheme of the invention is as follows: the utility model provides a plant muscle reinforced structure of doing behind basement structure roof beam for form new construction roof beam 1 through planting the muscle reinforced structure on original structure 2, plant the muscle reinforced structure including implanting several rows of reinforcing bar 3 of the longitudinal arrangement on original structure 2, it is down two rows of reinforcing bar 3 to run through behind the original structure 2 through 4 anchors of anchor structure on original structure 2, two rows of reinforcing bar 3 and top row reinforcing bar 3 quantity are 4 down, and all the other rows of reinforcing bar 3 quantity are 2, form new construction roof beam 1 through the stirrup 5 of a plurality of transverse arrangement of ligature and pouring concrete between several rows of reinforcing bar 3.
Preferably, the anchoring structure 4 comprises an anchoring plate 4a, a steel gasket 4b, a nut 4c, a bidirectional steel bar mesh 4d and a concrete protection block 4e, the anchoring ends of the lower two rows of steel bars 3 are provided with threads, the anchoring ends of the lower two rows of steel bars 3 penetrate through the anchoring plate 4a and are fixed by matching with the steel gasket 4b and the nut 4c, and the concrete protection block 4e is formed by arranging the bidirectional steel bar mesh 4d on the bottom surface and the side surface and pouring concrete.
Preferably, the number of the rows of the reinforcing steel bars 3 is not less than 4.
Preferably, the lower row of steel bars 3 and the top row of steel bars 3 are HRB 400-grade deformed steel bars with phi of 25mm, and the rest rows of steel bars 3 are HRB 400-grade deformed steel bars with phi of 16 mm.
Preferably, the 3 bar planting of lower two rows of reinforcing bars run through original structure 2, and 3 bar planting lengths of top row reinforcing bar are not less than 500mm, and all the other row bar planting lengths are not less than 300 mm.
Preferably, the anchor plate 4a is a Q345B grade steel plate with the size of 600mm × 250mm × 30 mm.
Preferably, the steel gasket 4b adopts a Q345B grade steel gasket with the size of 100mm × 100mm × 20 mm.
Preferably, the nut 4c adopts 8.8-stage M24 double nuts.
Preferably, the bidirectional reinforcing mesh 4d is made of HPB 235-grade plain steel bars with the diameter of 6mm, and the arrangement distance is 50mm × 50 mm.
Preferably, the size of the concrete protection block 4e is 700mm × 300mm × 200mm, and the concrete protection block is formed by pouring C35 self-compacting concrete.
The invention has the following beneficial effects:
according to the invention, the new structure beam and the original structure are connected into a whole by embedding the steel bars on the original structure which is constructed in advance and arranging the anchoring ends by drilling the steel bars, so that a support is provided for the basement floor, and construction is fully carried out according to the design drawing to achieve the structural bearing capacity required by the design. The method is simple to operate, and has no special professional requirements on constructors; and the raw materials are common materials in construction sites and are easy to purchase. The method has stronger flexibility, and can be easily used for providing reference basis for the construction of newly added structural beams, cantilever beams and the like.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a perspective view of an anchor plate according to the present invention;
in the figure: 1. a new structural beam; 2. the original structure; 3. reinforcing steel bars; 4. an anchoring structure; 4a, an anchoring plate; 4b, steel gaskets; 4c, a nut; 4d, bidirectional reinforcing mesh sheets; 4e, a concrete protection block; 5. and (5) hooping.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, 2, a bar planting reinforced structure who does behind basement structure roof beam, a be used for forming new structure roof beam 1 through bar planting reinforced structure on original structure 2, bar planting reinforced structure is including implanting several rows of reinforcing bars 3 of the longitudinal arrangement on original structure 2, it is lower two rows of reinforcing bars 3 and run through behind the original structure 2 through 4 anchors of anchor structure on original structure 2, lower two rows of reinforcing bars 3 and the 3 quantity of top row reinforcing bars are 4, all the other 3 quantity of row reinforcing bars are 2, form new structure roof beam 1 through the stirrup 5 of a plurality of transverse arrangement of ligature and pouring concrete between the several rows of reinforcing bars 3.
In the embodiment of the present invention, as shown in fig. 3 and 4, the anchoring structure 4 includes anchoring plates 4a, steel shims 4b (8), nuts 4c (16), bidirectional steel mesh sheets 4d, and concrete protection blocks 4e, the anchoring ends of the lower two rows of steel bars 3 are provided with threads, the anchoring ends of the lower two rows of steel bars 3 penetrate through the anchoring plates 4a and are fixed by matching with the steel shims 4b and the nuts 4c, and the concrete protection blocks 4e are formed by arranging the bidirectional steel mesh sheets 4d on the bottom surface and the side surfaces and pouring concrete.
In an embodiment of the invention, the new structural beam 1 has a cross-sectional dimension of 500mm × 800 mm.
In the embodiment of the present invention, the number of rows of the reinforcing bars 3 is 6.
In the embodiment of the invention, HRB 400-grade deformed steel bars with phi 25mm (total 12) are adopted as the lower row of steel bars 3 and the top row of steel bars 3, and HRB 400-grade deformed steel bars with phi 16mm (total 6) are adopted as the rest 3 rows of steel bars 3.
In the embodiment of the invention, the embedded bars of the lower two rows of steel bars 3 penetrate through the original structure 2, the embedded bar length of the top row of steel bars 3 is not less than 500mm, and the embedded bar length of the other 3 rows is not less than 300 mm.
In the embodiment of the present invention, the anchor plate 4a is a Q345B grade steel plate with a size of 600mm × 250mm × 30 mm.
In the embodiment of the present invention, the steel gasket 4b is a Q345B grade steel gasket having a size of 100mm × 100mm × 20 mm.
In the embodiment of the present invention, the nut 4c employs 8.8-step M24 double nuts.
In the embodiment of the invention, the bidirectional reinforcing mesh 4d adopts HPB 235-grade plain steel bars with phi of 6mm, and the arrangement distance is 50mm × 50 mm.
In the embodiment of the invention, the size of the concrete protection block 4e is 700mm × 300mm × 200mm, and the concrete protection block is formed by pouring C35 self-compacting concrete.
During construction, a protective layer of an original structure 2 is chiseled out to expose the original structure steel bar before the steel bar 3 is implanted, the position of the original structure 2 steel bar is ascertained and the drilling position is marked, longitudinal bars and stirrups of the original structure 2 are avoided, all the steel bars 3 adopt Xideli A-level structure glued and implanted bars, a field drawing test is carried out after the bars are implanted, and the next step of construction can be carried out after the bars are qualified.
In the invention, the interfaces of the new structural beam 1 and the original structure 2 are roughened, the surfaces of the beams are cleaned, and then the concrete interface treating agent is coated, wherein the concrete of the new structural beam 1 is micro-expansive concrete.
In the invention, the anchor plate 4a and the boundary surface of the original structure 2 are coated with A-level structural adhesive for bonding and fixing, and C35 self-compacting concrete is adopted for pouring to form protection.
In the invention, the diameter of the drilled holes for the steel bar 3 in the upper 4 rows is 20mm, the diameter of the drilled holes for the steel bar 3 in the lower 2 rows is 32mm, the length of the end part of the threaded end is not less than 150mm, and the steel bar 3 and the nut 4c are connected in a spot welding manner after being fastened by the nut 4 c.
The sizes of all components in the invention can be adjusted according to actual conditions, and the embodiment only briefly describes the reinforcement of the embedded bars behind the basement structural beam under specific conditions.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a plant muscle reinforced structure of doing behind basement structure roof beam for form new construction roof beam (1) through planting the muscle reinforced structure on original structure (2), its characterized in that, plant the muscle reinforced structure including planting several rows of reinforcing bars (3) of longitudinal arrangement on original structure (2), it is lower two rows of reinforcing bars (3) run through behind original structure (2) through anchor structure (4) anchor on original structure (2), lower two rows of reinforcing bars (3) and top row reinforcing bar (3) quantity are 4, and all the other rows of reinforcing bars (3) quantity are 2, form new construction roof beam (1) through banding a plurality of transverse arrangement's stirrup (5) and pouring concrete between several rows of reinforcing bars (3).
2. The rebar planting reinforcement structure made behind the basement structural beam is characterized in that the anchoring structure (4) comprises an anchoring plate (4a), a steel gasket (4b), a nut (4c), a bidirectional rebar net piece (4d) and a concrete protection block (4e), the anchoring ends of the lower two rows of rebars (3) are provided with threads, the anchoring ends of the lower two rows of rebars (3) penetrate through the anchoring plate (4a) and are fixed by matching the steel gasket (4b) and the nut (4c), and the concrete protection block (4e) is formed by arranging the bidirectional rebar net piece (4d) on the bottom surface and the side surface and pouring concrete.
3. The embedded steel bar reinforced structure made behind the basement structural beam according to the claim 1, characterized in that the number of rows of the steel bars (3) is not less than 4.
4. The embedded steel bar reinforcing structure made behind the basement structural beam as claimed in claim 1, wherein the lower row of steel bars (3) and the top row of steel bars (3) are HRB 400-grade deformed steel bars with phi 25mm, and the rest rows of steel bars (3) are HRB 400-grade deformed steel bars with phi 16 mm.
5. The embedded steel bar reinforced structure made behind the basement structural beam according to claim 1, characterized in that the embedded steel bars of the lower two rows of steel bars (3) penetrate through the original structure (2), the embedded steel bar length of the top row of steel bars (3) is not less than 500mm, and the embedded steel bar length of the other rows is not less than 300 mm.
6. The reinforced structure of the post-planted bars of the basement structural beam as claimed in claim 2, wherein the anchoring plate (4a) is a Q345B grade steel plate with the size of 600mm × 250mm × 30 mm.
7. The reinforced structure of the post-planted bars of the basement structural beam as claimed in claim 2, wherein the steel gasket (4b) is a Q345B grade steel gasket with the size of 100mm × 100mm × 20 mm.
8. The reinforced structure of the basement structural beam, which is made after the beam, according to the claim 2, characterized in that the nut (4c) adopts 8.8-grade M24 double nuts.
9. The reinforced structure of the basement structure beam rear planting bar according to claim 2, characterized in that the bidirectional reinforcing mesh (4d) is made of HPB235 grade smooth steel bars with the diameter of phi 6mm, and the distance between the bars is 50mm × 50 mm.
10. The reinforced structure of the embedded bars made behind the basement structural beam as claimed in claim 2, wherein the size of the concrete protection block (4e) is 700mm × 300mm × 200mm, and the reinforced structure is formed by pouring C35 self-compacting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010303182.5A CN111335669A (en) | 2020-04-17 | 2020-04-17 | Bar planting reinforced structure made behind basement structure beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010303182.5A CN111335669A (en) | 2020-04-17 | 2020-04-17 | Bar planting reinforced structure made behind basement structure beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111335669A true CN111335669A (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010303182.5A Pending CN111335669A (en) | 2020-04-17 | 2020-04-17 | Bar planting reinforced structure made behind basement structure beam |
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| Country | Link |
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| CN (1) | CN111335669A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205983A (en) * | 2013-04-15 | 2013-07-17 | 中建三局第二建设工程有限责任公司 | Construction method of basement rear support system |
| CN103615049A (en) * | 2013-12-19 | 2014-03-05 | 中建一局集团第二建筑有限公司 | Anchoring joint of newly added frame rebar and original structure and construction method of anchoring joint |
| CN204252571U (en) * | 2014-11-27 | 2015-04-08 | 苏州中固建筑科技有限公司 | A kind of newly-increased girder construction of concrete structure |
| CN104963338A (en) * | 2015-04-30 | 2015-10-07 | 大连交通大学 | Novel anchor head structure used for slope support and construction method thereof |
| CN108824483A (en) * | 2018-07-23 | 2018-11-16 | 中国建筑第八工程局有限公司 | The external wall structure and its construction method of multi-storey basement |
| CN212562610U (en) * | 2020-04-17 | 2021-02-19 | 中国建筑第四工程局有限公司 | Bar planting reinforced structure made behind basement structure beam |
-
2020
- 2020-04-17 CN CN202010303182.5A patent/CN111335669A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205983A (en) * | 2013-04-15 | 2013-07-17 | 中建三局第二建设工程有限责任公司 | Construction method of basement rear support system |
| CN103615049A (en) * | 2013-12-19 | 2014-03-05 | 中建一局集团第二建筑有限公司 | Anchoring joint of newly added frame rebar and original structure and construction method of anchoring joint |
| CN204252571U (en) * | 2014-11-27 | 2015-04-08 | 苏州中固建筑科技有限公司 | A kind of newly-increased girder construction of concrete structure |
| CN104963338A (en) * | 2015-04-30 | 2015-10-07 | 大连交通大学 | Novel anchor head structure used for slope support and construction method thereof |
| CN108824483A (en) * | 2018-07-23 | 2018-11-16 | 中国建筑第八工程局有限公司 | The external wall structure and its construction method of multi-storey basement |
| CN212562610U (en) * | 2020-04-17 | 2021-02-19 | 中国建筑第四工程局有限公司 | Bar planting reinforced structure made behind basement structure beam |
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