CN112627251A - Deep hole bar planting construction method for reinforced concrete structure - Google Patents
Deep hole bar planting construction method for reinforced concrete structure Download PDFInfo
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- CN112627251A CN112627251A CN202011609474.8A CN202011609474A CN112627251A CN 112627251 A CN112627251 A CN 112627251A CN 202011609474 A CN202011609474 A CN 202011609474A CN 112627251 A CN112627251 A CN 112627251A
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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Abstract
A deep hole bar planting construction method for a reinforced concrete structure comprises the following steps: 1) determining the position of a foundation steel bar embedded in a reinforced concrete structure; 2) drilling holes for planting bars; 2.1) when the drill bit is contacted with the foundation steel bar, drilling to the designed depth, replacing the drill bit with a large drill bit, and then performing drill repairing; 2.2) when the basic steel bar is exposed in the drilling process, determining the design interval of the basic steel bar according to a basic construction drawing, laterally offsetting the punching position, and performing drilling operation after replacing a large drill bit; 3) pouring bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the hole bottom of the bar planting hole, and the glue injection nozzle of the grouting device is drawn out while injecting glue; 4) after the bar planting steel bar is inserted into the bottom of the bar planting hole, no disturbance is guaranteed for 24 hours at normal temperature, and bar planting is completed after 48 hours. By adopting the method, the situation that the bar planting hole needs to be drilled again or the foundation steel bar is damaged due to the contact with the foundation steel bar in the conventional bar planting hole forming construction process can be avoided.
Description
Technical Field
The invention relates to the field of a reinforced concrete structure bar-planting hole-forming method, in particular to a reinforced concrete structure deep hole bar-planting construction method.
Background
After the reform is opened, the change of the economic operation mode promotes a large number of modern industrial areas to emerge all over the country, and the more the construction is faster, the more the construction scale is larger, and the demand of industrial plants is continuously refreshed. The acceleration of the construction speed of the industrial factory buildings also promotes the improvement of the concrete engineering technology of the industrial factory buildings and the improvement of the management level.
The rapid development of industrial technology, the scale enlargement, the improvement of process requirements and industrial continuity make the combination of the structure use function of an industrial factory building and the process of a process bag very important, and the later change of equipment selection inevitably exists, so that the original concrete foundation is greatly changed. Therefore, the construction technology of the deep hole bar planting of the structure must meet the requirements of the production process.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a reinforced concrete structure deep hole bar planting construction method, which can avoid the situation that a bar planting hole needs to be drilled again or a foundation steel bar is damaged due to the contact with the foundation steel bar in the conventional bar planting hole forming construction process.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a deep hole bar planting construction method for a reinforced concrete structure comprises the following steps:
1) determining the position of a foundation steel bar embedded in the reinforced concrete structure, marking a steel bar planting hole drilling position on the surface of the reinforced concrete structure after determining the steel bar planting hole position according to the site construction deviation and the steel bar planting hole parameters;
2) carrying out bar planting drilling, drilling a hole position in a bar planting hole on the surface of the reinforced concrete structure, carrying out drilling operation by using a water drilling and punching machine provided with a small drill bit, firstly lightly drilling to determine the bar planting hole position, then drilling into the reinforced concrete structure and returning slag under water pressure;
2.1) when the drill hole is not contacted with the foundation steel bar in the drilling process, replacing a small drill bit of the water drill punching machine with a large drill bit and then performing reinforcement drilling of the bar planting hole when the drill hole is drilled to the designed depth;
2.1.1) removing slag in the bar planting holes through hydraulic pressure slag return in the drill repairing process;
2.1.2) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the bottom of the bar planting hole, and the glue injection nozzle of the grouting device is drawn out while injecting glue until the glue injection nozzle is drawn out from the bar planting hole;
2.1.3) inserting the straight embedded bar into the embedded bar hole, and inserting the edge into the edge to axially rotate the straight embedded bar at a slow speed so as to tightly bond the embedded bar glue with the surface of the straight embedded bar and the inner wall of the embedded bar hole;
2.2) when the basic steel bar is exposed in the drilling process, determining the design interval of the basic steel bar according to a basic construction drawing, laterally offsetting the design interval of the basic steel bar of at most 1/2, and then replacing a small drill bit of the water drilling punching machine with a large drill bit to perform drilling operation of a bar planting hole;
2.2.1) removing slag in the bar planting holes through hydraulic pressure slag return in the drilling process;
2.2.3) inserting the Z-shaped steel bar planting into the steel bar planting hole, and enabling the turning part of the Z-shaped steel bar planting to be in contact with the exposed matrix steel bar;
2.2.4) "the turning point of the Z" shape steel bar planting is connected with the contact position of the matrix steel bar;
2.2.5) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the bottom of the bar planting hole, and the glue injection nozzle of the grouting device is drawn out while injecting glue until the glue injection nozzle is drawn out from the bar planting hole;
3) after the bar planting steel bar is inserted into the bottom of the bar planting hole, no disturbance is guaranteed for 24 hours at normal temperature, and bar planting is completed after 48 hours.
In an optimized scheme, in the step 1), the parameters of the bar planting holes comprise the diameter of the bar planting holes and the depth of the bar planting holes, the diameter of the bar planting holes is controlled to be 25-40 mm, and the depth of the bar planting holes is controlled to be 600-850 mm.
In a preferable scheme, in the step 2), the hole forming diameter of the large drill bit is the same as the diameter of the bar planting hole;
the hole forming diameter of the small drill bit is 1/2-2/3 of the diameter of the bar planting hole.
In an optimal scheme, in the step 4), in the glue injection operation process in the bar planting hole, the glue injection nozzle of the grouting device is drawn out while injecting glue, and after the bar planting glue is injected to a position 200-300 mm away from the orifice of the bar planting hole, the glue injection is stopped and the glue injection nozzle of the grouting device is completely drawn out.
In a preferable scheme, in the step 3), after the steps 2.1.1) and 2.2.4) are finished, the hole cleaning treatment is firstly carried out on the plant tendon holes, and the hole cleaning treatment is carried out in a mode of firstly wiping cotton threads and then drying by a heating rod.
In the preferred scheme, the turning part of the Z-shaped steel bar planting bar is connected with the contact position of the foundation steel bar in a spot welding mode.
The construction method for planting the steel bars in the deep hole of the reinforced concrete structure, provided by the invention, has the following beneficial effects by adopting the method:
(1) through the switching use of big small drill bit, realized boring broken concrete inner core fracture piece and reduced the dual construction effect of concrete inner core fracture piece, effectively ensured carry out deep hole bar planting's efficiency of construction and construction quality on reinforced concrete structure. (ii) a
(2) Can be under the condition that basic reinforcing bar exposes taking place, expose partial being connected through bar planting and basic reinforcing bar, realize the reinforcement of bar planting, help carrying out follow-up pouring construction on the bar planting, guarantee follow-up pouring part and the joint strength of former basis.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a hole position layout diagram of the bar planting holes of the present invention.
FIG. 2 is a hole position layout diagram of the bar planting holes and the repairing holes of the present invention.
Fig. 3 is a schematic view of the structure of the straight steel bar of the present invention.
Fig. 4 is a schematic view of the structure of the Z-shaped steel bar of the present invention.
In the figure: reinforced concrete structure 1, foundation reinforcement 2, bar planting hole 3, benefit drilling 4, straight bar planting reinforcing bar 5, "Z" shape bar planting reinforcing bar 6.
Detailed Description
Example 1:
as shown in fig. 1 and 3, a deep hole bar-planting construction method for a reinforced concrete structure comprises the following steps:
1) determining the position of a foundation steel bar 2 buried in a reinforced concrete structure 1, and marking the drilling position of a bar planting hole 3 on the surface of the reinforced concrete structure 1 after determining the position of the bar planting hole 3 according to the site construction deviation and the parameters of the bar planting hole 3;
2) carrying out bar planting drilling, drilling a hole position in a bar planting hole 3 on the surface of the reinforced concrete structure 1, carrying out drilling operation by using a water drilling machine provided with a small drill bit, firstly lightly drilling to determine a bar planting hole position, then drilling a hole in the reinforced concrete structure 1 and returning slag under water pressure;
3) after the bar planting steel bar is inserted into the bottom of the bar planting hole, no disturbance is guaranteed for 24 hours at normal temperature, and bar planting is completed after 48 hours.
In a preferred embodiment, the step 2) specifically comprises the following steps:
1) when the drill hole is not in contact with the foundation steel bar 2 in the drilling process, replacing a small drill bit of the water drill punching machine with a large drill bit and then performing drilling repairing on the bar planting hole 3 when the drill hole is drilled to the designed depth;
2) slag in the bar planting holes 3 is removed through hydraulic pressure slag return in the drill repairing process;
3) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the hole bottom of the bar planting hole 3, and the glue injection nozzle of the grouting device is extracted while injecting glue until the glue injection nozzle is extracted from the bar planting hole 3;
4) inserting the straight embedded bar steel bar 5 into the embedded bar hole 5, and rotating the straight embedded bar steel bar 5 along the axial direction slowly while inserting the edge, so that the embedded bar glue is tightly bonded with the surface of the straight embedded bar steel bar 5 and the inner wall of the embedded bar hole 3;
5) and (3) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the hole bottom of the bar planting hole 3, and the glue injection nozzle of the grouting device is drawn out while injecting glue until the glue injection nozzle is drawn out from the bar planting hole 3.
Example 2:
as shown in fig. 2 and 4, a deep hole bar-planting construction method for a reinforced concrete structure includes the following steps:
1) determining the position of a foundation steel bar 2 buried in a reinforced concrete structure 1, and marking the drilling position of a bar planting hole 3 on the surface of the reinforced concrete structure 1 after determining the position of the bar planting hole 3 according to the site construction deviation and the parameters of the bar planting hole 3;
2) carrying out bar planting drilling, drilling a hole position in a bar planting hole 3 on the surface of the reinforced concrete structure 1, carrying out drilling operation by using a water drilling machine provided with a small drill bit, firstly lightly drilling to determine a bar planting hole position, then drilling into the reinforced concrete structure (1) and returning slag under water pressure;
in a preferred embodiment, the step 2) specifically comprises the following steps:
1) when the basic steel bars 2 are exposed in the drilling process, determining the design interval of the basic steel bars 2 according to a basic construction drawing, laterally offsetting the design interval of the basic steel bars 2 of at most 1/2, replacing the small drill bit of the water drilling and punching machine with a large drill bit, and then drilling the bar planting holes 3;
2) slag in the bar planting holes 3 is removed through hydraulic pressure slag return in the drilling process;
3) inserting the Z-shaped steel bar planting holes 3 into the Z-shaped steel bar planting reinforcing bars 6, and enabling the turning parts of the Z-shaped steel bar planting reinforcing bars 6 to be in contact with the exposed matrix steel bars 2;
4) the turning part of the Z-shaped steel bar planting 6 is connected with the contact position of the matrix steel bar 2;
5) and (3) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the hole bottom of the bar planting hole 3, and the glue injection nozzle of the grouting device is drawn out while injecting glue until the glue injection nozzle is drawn out from the bar planting hole 3.
In a preferable scheme, in the step 4), the turning part of the Z-shaped steel bar planting reinforcement 6 is connected with the contact position of the foundation reinforcement 2 by adopting a spot welding mode.
Example 3:
on the basis of the embodiment 1 or 2,
the 3 parameters of the bar planting hole comprise the diameter of the bar planting hole and the depth of the bar planting hole, the diameter of the bar planting hole is controlled to be 25-40 mm, and the depth of the bar planting hole is controlled to be 600-850 mm.
In the preferred scheme, the diameter of the hole of the large drill is the same as that of the bar planting hole 3;
the hole forming diameter of the small drill bit is 1/2-2/3 of the diameter of the bar planting hole 3.
In the preferred scheme, in the glue injection operation process in the bar planting hole 3, the glue injection nozzle of the grouting device is extracted while injecting glue, and after the bar planting glue is injected to a position 200-300 mm away from the orifice of the bar planting hole 3, the glue injection is stopped and the glue injection nozzle of the grouting device is completely extracted.
In the preferred scheme, after the bar planting holes 3 are drilled, the bar planting holes 3 are cleaned firstly, and the hole cleaning is carried out in a mode of 'firstly wiping cotton threads and then drying a heating rod'.
In the reinforced concrete structure deep hole bar planting construction method disclosed in the application, adopt little drill bit earlier to carry out the predrilling location, under the accurate prerequisite of assurance drilling hole site, utilize big drill bit to carry out the bar planting hole and bore and establish the operation, can effectively solve the concrete inner core fracture problem that causes that directly adopts big drill bit to cause, carry out the light below boring to the foundation reinforcement buried depth through little drill bit simultaneously and can guarantee to reduce the injury to the foundation reinforcement when contacting the foundation reinforcement.
Claims (6)
1. A construction method for planting reinforcement in a deep hole of a reinforced concrete structure is characterized by comprising the following steps:
1) determining the position of a foundation steel bar (2) buried in a reinforced concrete structure (1), marking the drilling position of a bar planting hole (3) on the surface of the reinforced concrete structure (1) after determining the position of the bar planting hole (3) according to site construction deviation and the parameters of the bar planting hole (3);
2) carrying out bar planting drilling, wherein a drilling position of a bar planting hole (3) on the surface of the reinforced concrete structure (1) is drilled, a water drilling and punching machine provided with a small drill bit is used for drilling, the bar planting hole position is determined by lightly drilling, then, the hole is drilled in the reinforced concrete structure (1), and slag is returned under water pressure;
2.1) when the drill hole is not contacted with the foundation steel bar (2) in the drilling process, replacing a small drill bit of the water drill punching machine with a large drill bit and then performing drilling repairing on the bar planting hole (3) when the drill hole is drilled to the designed depth;
2.1.1) removing slag in the bar planting holes (3) through hydraulic pressure slag return in the drill repairing process;
2.1.2) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the bottom of the bar planting hole (3), and the glue injection nozzle of the grouting device is extracted while injecting glue until the glue injection nozzle is extracted from the bar planting hole (3);
2.1.3) inserting the straight embedded bar steel bars (5) into the embedded bar holes (5), and inserting the edge into the edge to axially rotate the straight embedded bar steel bars (5) at a slow speed so as to tightly bond the embedded bar glue with the surfaces of the straight embedded bar steel bars (5) and the inner walls of the embedded bar holes (3);
2.2) when the basic steel bars (2) are exposed in the drilling process, determining the design interval of the basic steel bars (2) according to a basic construction drawing, laterally offsetting the design interval of the basic steel bars (2) of at most 1/2, replacing small drill bits of the water drilling and punching machine with large drill bits, and then drilling the bar planting holes (3);
2.2.1) removing slag in the bar planting holes (3) through hydraulic slag return in the drilling process;
2.2.3) inserting the Z-shaped steel bar planting reinforcing steel bars (6) into the steel bar planting holes (3), and enabling the turning parts of the Z-shaped steel bar planting reinforcing steel bars (6) to be in contact with the exposed matrix steel bars (2);
2.2.4) the turning part of the Z-shaped embedded steel bar (6) is connected with the contact position of the matrix steel bar (2);
2.2.5) pouring the bar planting glue into the bar planting hole by using a grouting device, wherein a glue injection nozzle of the grouting device extends to the position near the bottom of the bar planting hole (3), and the glue injection nozzle of the grouting device is extracted while injecting glue until the glue injection nozzle is extracted from the bar planting hole (3);
3) after the bar planting steel bar is inserted into the bottom of the bar planting hole, no disturbance is guaranteed for 24 hours at normal temperature, and bar planting is completed after 48 hours.
2. The reinforced concrete structure deep hole bar planting construction method according to claim 1, characterized in that: in the step 1), the parameters of the bar planting holes (3) comprise the diameter of the bar planting holes and the depth of the bar planting holes, the diameter of the bar planting holes is controlled to be 25-40 mm, and the depth of the bar planting holes is controlled to be 600-850 mm.
3. The reinforced concrete structure deep hole bar planting construction method according to claim 1, characterized in that: in the step 2), the diameter of the formed hole of the large drill bit is the same as that of the bar planting hole (3);
the hole diameter of the small drill bit is 1/2-2/3 of the diameter of the bar planting hole (3).
4. The reinforced concrete structure deep hole bar planting construction method according to claim 1, characterized in that: in the step 4), in the glue injection operation process in the bar planting hole (3), the glue injection nozzle of the grouting device is extracted while injecting glue, and after the bar planting glue is injected to a position 200-300 mm away from the orifice of the bar planting hole (3), the glue injection is stopped and the glue injection nozzle of the grouting device is completely extracted.
5. The reinforced concrete structure deep hole bar planting construction method according to claim 1, characterized in that: in the step 3), after the steps 2.1.1) and 2.2.4) are finished, the hole cleaning treatment is firstly carried out on the tendon holes (3), and the hole cleaning treatment is carried out in a mode of firstly wiping cotton threads and then drying by a heating rod.
6. The reinforced concrete structure deep hole bar planting construction method according to claim 1, characterized in that: the turning part of the Z-shaped steel bar planting reinforcement (6) is connected with the contact position of the foundation reinforcement (2) in a spot welding mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011609474.8A CN112627251A (en) | 2020-12-30 | 2020-12-30 | Deep hole bar planting construction method for reinforced concrete structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011609474.8A CN112627251A (en) | 2020-12-30 | 2020-12-30 | Deep hole bar planting construction method for reinforced concrete structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175236A (en) * | 2021-05-18 | 2021-07-27 | 宁波市建设集团股份有限公司 | Novel injection method chemical bar planting construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144265A (en) * | 2007-10-23 | 2008-03-19 | 武汉武大巨成加固实业有限公司 | Mass concrete structure deep pore reinforced construction method |
| CN206521955U (en) * | 2017-01-20 | 2017-09-26 | 无锡市城归设计有限责任公司 | A kind of Rebar bonding device |
| CN108019051A (en) * | 2017-10-18 | 2018-05-11 | 广州市第三建筑工程有限公司 | Reinforced concrete structure deep pore reinforced construction method |
| CN210598227U (en) * | 2019-08-02 | 2020-05-22 | 中国建筑第八工程局有限公司 | Integral type embedded steel bar anchoring structure |
-
2020
- 2020-12-30 CN CN202011609474.8A patent/CN112627251A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144265A (en) * | 2007-10-23 | 2008-03-19 | 武汉武大巨成加固实业有限公司 | Mass concrete structure deep pore reinforced construction method |
| CN206521955U (en) * | 2017-01-20 | 2017-09-26 | 无锡市城归设计有限责任公司 | A kind of Rebar bonding device |
| CN108019051A (en) * | 2017-10-18 | 2018-05-11 | 广州市第三建筑工程有限公司 | Reinforced concrete structure deep pore reinforced construction method |
| CN210598227U (en) * | 2019-08-02 | 2020-05-22 | 中国建筑第八工程局有限公司 | Integral type embedded steel bar anchoring structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175236A (en) * | 2021-05-18 | 2021-07-27 | 宁波市建设集团股份有限公司 | Novel injection method chemical bar planting construction method |
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Application publication date: 20210409 |