CN109877945B - Hole-forming positioning construction method for reserved hole channel of concrete beam - Google Patents
Hole-forming positioning construction method for reserved hole channel of concrete beam Download PDFInfo
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- CN109877945B CN109877945B CN201910061940.4A CN201910061940A CN109877945B CN 109877945 B CN109877945 B CN 109877945B CN 201910061940 A CN201910061940 A CN 201910061940A CN 109877945 B CN109877945 B CN 109877945B
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- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 239000007787 solid Substances 0.000 claims abstract description 34
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
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Abstract
A hole forming and positioning construction method for a reserved hole of a concrete beam comprises the following steps: processing and manufacturing a lower layer grid positioning net and an upper layer positioning steel frame; marking the position lofting points of the pore channels, and welding the lower-layer grid positioning net on the concrete beam steel reinforcement framework; inserting the solid steel column into the grid of the lower grid positioning net; the upper positioning steel frame is placed at the upper end of the solid steel column, and the solid steel column and the upper positioning steel frame are fixedly connected through fastening bolts; coating a layer of concrete surface retarder or release agent on the surface of the solid steel column, and then pouring concrete; after the concrete is initially set, timely loosening the fastening bolts and detaching the upper positioning steel frame; and then, connecting the fastening bolts with the solid steel columns again, and pulling out the solid steel columns one by one through the fastening bolts to form reserved channels. The invention is not influenced by the number of holes and the distance between the holes, has simple structure and quick operation, can improve the positioning accuracy of the formed holes and saves the construction time and the cost.
Description
Technical Field
The invention belongs to the technical field of concrete beam construction, and relates to a hole forming and positioning construction method for a reserved hole channel of a concrete beam.
Background
In the concrete structure process, especially in the precast concrete beam process, a pore channel needs to be reserved and positioned. For example, when the hollow component is prefabricated, a pore channel needs to be reserved; and for example, when the segmental beam is prefabricated, the hole channel needs to be reserved for facilitating hoisting. The existing concrete member pore-forming method is generally to arrange a steel pipe inner mold or a pore-forming member in concrete, but has no good positioning method, so that pore-forming positioning is difficult to master, pore-forming positioning time is too long, pore-forming quality is difficult to guarantee, pore channel positions are easy to deviate, and the reliability of the concrete member is finally influenced.
Disclosure of Invention
The invention aims to provide a high-efficiency and high-precision hole forming and positioning construction method for a reserved hole of a concrete beam, aiming at the technical problems of the existing hole forming and positioning method for the reserved hole of the concrete beam.
The invention is realized by the following technical scheme.
The invention relates to a hole forming and positioning construction method for a reserved hole channel of a concrete beam.
(1) And processing and manufacturing the lower-layer grid positioning net and the upper-layer positioning steel frame according to the relative position of the reserved hole channel of the drawing.
(2) Marking a hole position lofting point on the concrete beam steel reinforcement framework, and welding the lower layer grid positioning net on the concrete beam steel reinforcement framework.
(3) And inserting the solid steel column into the grid of the lower grid positioning net according to the position of the pore.
(4) The upper positioning steel frame is placed at the upper end of the solid steel column, the round hole in the upper positioning steel frame corresponds to the internal thread hole in the solid steel column, and the solid steel column is fixedly connected with the upper positioning steel frame through the fastening bolt.
(5) And (3) coating a layer of concrete surface retarder on the surface of the solid steel column or conveniently separating the retarder from the solid steel column, and then pouring concrete.
(6) And after the concrete is initially set, loosening the fastening bolt in time and detaching the upper positioning steel frame. And then, connecting the fastening bolts with the solid steel columns again, and pulling out the solid steel columns one by one through the fastening bolts to form reserved channels to finish the hole forming and positioning of the reserved channels of the concrete beam.
Compared with the prior art, the invention has the following beneficial effects.
(1) The method for positioning the hole forming of the reserved hole channel of the concrete beam is simple to operate, does not need high-tech operation, does not need complex mechanical equipment or appliances, can be quickly learned and used by field workers, improves the operation efficiency, and reduces the operation cost. The solid steel column, the fastening bolt and the upper positioning steel frame can be repeatedly used.
(2) The hole forming positioning method of the reserved hole channel of the concrete beam has the advantages that the positioning is more accurate and reliable, the group holes can be positioned, and the hole forming quality of the reserved hole channel of the concrete beam can be ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of an upper positioning steel frame according to the present invention.
Fig. 3 is a schematic structural view of the lower grid positioning net of the invention.
In the figure, 1 is an upper layer positioning steel frame; 2 is a round hole; 3 is a lower layer grid positioning net; 4 is a reinforcing steel bar; 5 is a solid steel column; 6 is a fastening bolt; and 7 is a grid.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, the invention relates to a hole forming and positioning construction method for a reserved hole of a concrete beam, which comprises an upper-layer positioning steel frame 1, a round hole 2, a lower-layer grid positioning net 3, reinforcing steel bars 4, a solid steel column 5, fastening bolts 6 and grids 7.
And (3) processing and manufacturing a lower-layer grid positioning net 3 and an upper-layer positioning steel frame 1 according to the relative position of the reserved hole channel in the drawing. The lower-layer grid positioning net 3 is formed by overlapping a plurality of reinforcing steel bars 4, wherein the gap positions of the reinforcing steel bars 4 are determined according to the circumscribed square size of a reserved pore channel, pore channel position lofting points are marked on the concrete beam steel reinforcement framework, and then the lower-layer grid positioning net 3 is welded and fixed in the concrete beam steel reinforcement framework according to the lofting points to form a grid 7 shown in the figure 2; the upper positioning steel frame 1 is formed by overlapping four strip steel plates end to form a rectangular steel frame, and then according to the arrangement position and the pore size of a reserved pore, a round hole 2 is drilled on the strip steel plate to complete the processing and manufacturing of the lower grid positioning net 3 and the upper positioning steel frame 1. And selecting a corresponding solid steel column 5 according to the aperture of the reserved pore channel, and drilling an internal threaded hole at the upper end of the solid steel column, wherein the internal threaded hole is matched with the fastening bolt 6. The lower end of a solid steel column 5 is inserted into a grid 7 of a lower grid positioning net 3, the upper end of the solid steel column is fixedly connected with an upper positioning steel frame 1 through a fastening bolt 6, the upper end and the lower end of the solid steel column 5 are simultaneously fixed, and the position of the solid steel column 5 can be accurately fixed in a reserved hole channel position.
A layer of concrete surface retarder or a release agent is smeared on the surface of the solid steel column to facilitate the release; and after the concrete is poured and initially set, the fastening bolts are loosened in time, and the upper positioning steel frame is detached.
And connecting the fastening bolts with the solid steel columns again, and then pulling out the solid steel columns one by one through the fastening bolts to form reserved channels to finish the hole forming and positioning of the reserved channels of the concrete beam.
The structural style of the device shown in the figure 1 is designed according to an example, in actual application, the drilling style of the upper-layer positioning steel frame and the grid style of the lower-layer grid positioning net can be changed according to the actual concrete reserved hole channel arrangement requirement, and the method disclosed by the invention is also applicable to other conditions.
In the construction process, the solid steel column, the fastening bolt and the upper positioning steel frame can be repeatedly used.
Claims (1)
1. A hole forming and positioning construction method for a reserved hole channel of a concrete beam is characterized by comprising the following steps:
(1) processing and manufacturing a lower-layer grid positioning net and an upper-layer positioning steel frame according to the relative position of a reserved hole channel of a drawing;
(2) marking a hole position lofting point on the concrete beam steel reinforcement framework, and welding the lower layer grid positioning net on the concrete beam steel reinforcement framework;
(3) inserting the solid steel column into the grid of the lower grid positioning net according to the position of the pore;
(4) the upper positioning steel frame is placed at the upper end of the solid steel column, a round hole in the upper positioning steel frame corresponds to an internal threaded hole in the solid steel column, and the solid steel column and the upper positioning steel frame are fixedly connected through a fastening bolt;
(5) coating a layer of concrete surface retarder or release agent on the surface of the solid steel column, and then pouring concrete;
(6) after the concrete is initially set, loosening the fastening bolts in time, and detaching the upper positioning steel frame; and then, connecting the fastening bolts with the solid steel columns again, and pulling out the solid steel columns one by one through the fastening bolts to form reserved channels to finish the hole forming and positioning of the reserved channels of the concrete beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910061940.4A CN109877945B (en) | 2019-01-23 | 2019-01-23 | Hole-forming positioning construction method for reserved hole channel of concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910061940.4A CN109877945B (en) | 2019-01-23 | 2019-01-23 | Hole-forming positioning construction method for reserved hole channel of concrete beam |
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| Publication Number | Publication Date |
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| CN109877945A CN109877945A (en) | 2019-06-14 |
| CN109877945B true CN109877945B (en) | 2021-03-26 |
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| CN201910061940.4A Active CN109877945B (en) | 2019-01-23 | 2019-01-23 | Hole-forming positioning construction method for reserved hole channel of concrete beam |
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| CN112942679B (en) * | 2021-01-29 | 2023-01-17 | 重庆大学 | Precast concrete frame beam capable of realizing standardization and construction method thereof |
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| AT271298B (en) * | 1964-11-20 | 1969-05-27 | Josef Proksch | Base plate and method for producing a large format building board |
| CN2560481Y (en) * | 2002-08-26 | 2003-07-16 | 冼炳泉 | Porous concrete block perforating apparatus |
| CN102121315B (en) * | 2011-01-07 | 2012-04-25 | 中建五局第三建设有限公司 | Hole reserving construction method for tightly-fixed steel sleeve |
| CN202324611U (en) * | 2011-11-16 | 2012-07-11 | 浙江建设职业技术学院 | Concrete column molding composition template |
| CN202416185U (en) * | 2012-01-05 | 2012-09-05 | 中铁四局集团第三建设有限公司 | Positioning frame for preserved bolt holes of cushions of support |
| CN106049644B (en) * | 2016-07-25 | 2018-04-17 | 上海市城市排水有限公司 | A kind of concrete drain tile contains the quick reparation erecting device of detection drilling and its restorative procedure |
| CN106760502A (en) * | 2016-11-14 | 2017-05-31 | 太原理工大学 | Shear wall end cylinder construction method |
| CN106869365B (en) * | 2017-01-19 | 2019-05-10 | 中国核工业华兴建设有限公司 | A kind of construction method with irregular intensive hole shear wall |
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Application publication date: 20190614 Assignee: Nanchang Chuangda new building materials Co.,Ltd. Assignor: Nanchang University Contract record no.: X2023980052156 Denomination of invention: A method for hole positioning construction of reserved holes in concrete beams Granted publication date: 20210326 License type: Common License Record date: 20231213 |
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