CN114215381A - Concrete structure ultra-deep post-anchoring construction method - Google Patents
Concrete structure ultra-deep post-anchoring construction method Download PDFInfo
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- CN114215381A CN114215381A CN202111652765.XA CN202111652765A CN114215381A CN 114215381 A CN114215381 A CN 114215381A CN 202111652765 A CN202111652765 A CN 202111652765A CN 114215381 A CN114215381 A CN 114215381A
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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
- E04G23/0222—Replacing or adding wall ties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a concrete structure ultra-deep post-anchoring construction method, which comprises the following steps: firstly, drilling a hole on the surface of the concrete structure by using a water drill to form a water drill hole vertical to the surface of the concrete structure; drilling continuously along the water drilling hole by adopting a percussion drill to form a percussion drilling hole; then, adopting a water drill to drill continuously along the impact drilling hole to form a water drilling hole; drilling a hole for a plurality of times by alternately adopting a percussion drill and a water drill, wherein the depth of the drilling hole for each time by adopting the water drill is greater than that of the drilling hole for each time by adopting the percussion drill until the depth reaches the designed hole-forming depth, so as to obtain a bar-planting hole; drying and cleaning the tendon-planting holes; and finally, pouring the bar planting glue, screwing the steel bars into the bar planting holes along the thread direction, and fixing the steel bars until the bar planting glue is solidified. The ultra-deep post-anchoring construction method for the concrete structure is suitable for anchoring construction with deep hole forming depth, and has the advantages of vertical hole forming, high efficiency and good bar planting anchoring effect.
Description
Technical Field
The invention relates to the technical field of concrete structure reinforcement and reconstruction, in particular to ultra-deep post-anchoring on a concrete structure.
Background
In the field of concrete structure reinforcement and transformation, a rear anchoring construction technology is one of the more common construction technologies. In special reconstruction designs of concrete structures, deep requirements are required on the hole forming depth of post-anchoring construction, and the hole forming depth reaches 600-1000 mm. Adopt to strike to bore direct pore-forming, it is longer because of strikeing to bore the drilling rod, the unable fixed firm problem of manual operation, there is the condition of inclined hole behind the pore-forming, again because of the hole is darker, the clearance of piece dust is comparatively difficult, and the reinforcing bar penetrates the deep hole simultaneously, is difficult for guaranteeing that the bar planting is glued fully in the hole. The subsequent bar planting quality is influenced, and therefore, a concrete structure ultra-deep rear anchoring construction method is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the ultra-deep post-anchoring construction method for the concrete structure, which can meet the requirement of performing post-anchoring construction under the depth of 600 mm-1000 mm.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a concrete structure ultra-deep post-anchoring construction method comprises the following steps:
s1, drilling a hole on the surface of the concrete structure by using a water drill to form a water drill hole vertical to the surface of the concrete structure;
s2, adopting the impact drill to drill continuously along the water drill hole to form an impact drill hole;
s3, adopting a water drill to drill continuously along the impact drill hole to form a water drill hole;
s4, alternately repeating S2 and S3 for a plurality of times, wherein the depth of the drill hole drilled by the water drill each time is larger than that of the drill hole drilled by the impact drill each time until the depth reaches the designed hole-forming depth, and a bar-planting hole is obtained;
s5, drying and cleaning the tendon planting holes; and (4) pouring the bar planting glue, screwing the steel bar into the bar planting hole along the thread direction, and fixing the steel bar until the bar planting glue is solidified.
On the basis of the technical scheme, when the water drill is used for drilling, the water drill is fixed on the surface of the concrete structure through the water drill positioning frame; when the percussion drill is used for drilling, the rhinestone positioning frame is removed. The invention uses the rhinestone positioning frame which can be repeatedly disassembled and assembled on the surface of the concrete structure to fix the rhinestone frame at the designed position of the bar planting hole for positioning and drilling, thereby ensuring the stability of the rhinestone during drilling and ensuring that the formed rhinestone hole is vertical to the surface of the concrete structure.
On the basis of the technical scheme, the rhinestone positioning frame comprises a first flat plate and a second flat plate, after the rhinestone positioning frame is installed, the first flat plate is tightly attached to and fixed on the surface of a concrete structure, and the second flat plate is perpendicular to the first flat plate. The first flat plate of the rhinestone positioning frame is fixed on the surface of a concrete structure through expansion bolts, and the whole rhinestone positioning frame only consists of two flat plates, is simple and easy to install and is low in cost.
On the basis of the technical scheme, the depth of the water drill hole is 2 times of the depth of the impact drill hole.
On the basis of the technical scheme, the depth of the water drill hole is 100 +/-5 mm, and the depth of the impact drill hole is 200 +/-5 mm.
On the basis of the technical scheme, the last drilling adopts percussion drilling to ensure that the inner wall of the finally formed bar planting hole is rough and the contact area of the hole wall and the bar planting glue is increased.
On the basis of the technical scheme, the steps of drying and cleaning the bar planting holes are as follows: and drying the bar planting holes by using a heating rod, then repeatedly blowing the bar planting holes from the bottom of the holes to the hole openings by using an air compressor, and brushing the bar planting holes by combining with a hairbrush until sundries in the holes are completely cleaned. Clear hole through high strength compressed air can clear away the dust piece in the deep hole to being close to the entrance to a cave, and the rethread brush is with its brush play, can guarantee the clean up in the hole.
On the basis of the technical scheme, the step of pouring the bar planting glue comprises the following steps: and moving an injection opening of the bar planting gun to be close to the bottom of the bar planting hole, injecting glue and drawing out the injection opening simultaneously until the injection volume V of the bar planting glue reaches a calculated value, and stopping injecting the glue. The volume of the bar planting glue is accurately calculated, so that the purposes of full utilization and material saving can be achieved.
On the basis of the technical scheme, the calculation formula of the volume V of the bar-planting glue injection is as follows:
V＝(D2/4×π×L-d2/4×π×L)×K
wherein, D: the diameter of the anchoring hole is d +6 mm; d: the diameter of the steel bar; l: an anchor length; k: the margin coefficient was 1.15.
On the basis of the technical scheme, the advancing speed of the reinforcing steel bar screwed into the reinforcing steel bar implanting hole is not more than 50 mm/s. According to the invention, the steel bar planting holes are screwed in along the thread direction, and the advancing speed of the steel bars is adjusted, so that full steel bar planting glue is filled between the steel bars and the hole walls.
Compared with the prior art, the invention has the advantages that:
the ultra-deep post-anchoring construction method for the concrete structure is suitable for anchoring construction with deep hole forming depth, has the advantages of vertical hole forming, high efficiency and good bar planting anchoring effect, and can realize efficient and high-quality hole forming of ultra-deep holes by mutually matching two drilling devices.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view illustrating a method of drilling a hole by fixing a rhinestone to a surface of a concrete structure according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of an embodiment of the present invention in which a drill is used to drill a hole with a percussion drill;
FIG. 3 is a schematic view of the embodiment of the present invention in which the reinforcement holes are cleaned by high-strength compressed air;
in the figure: 1-water drill, 10-water drill bit, 11-water drill locating rack, 110-expansion bolt, 2-concrete structure surface, 3-water drill hole, 4-impact drill, 40-impact drill bit, 5-impact drill hole, 6-air compressor, 60-air compressor pump pipe and 7-bar planting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention provides a concrete structure ultra-deep post-anchoring construction method, which comprises the following steps:
s1, drilling a hole on the surface of the concrete structure by using a water drill to form a water drill hole vertical to the surface of the concrete structure;
s2, adopting the impact drill to drill continuously along the water drill hole to form an impact drill hole;
s3, adopting a water drill to drill continuously along the impact drill hole to form a water drill hole;
s4, alternately repeating S2 and S3 for a plurality of times, wherein the depth of the drill hole drilled by the water drill each time is larger than that of the drill hole drilled by the impact drill each time until the depth reaches the designed hole-forming depth, and a bar-planting hole is obtained;
s5, drying and cleaning the tendon planting holes; and (4) pouring the bar planting glue, screwing the steel bar into the bar planting hole along the thread direction, and fixing the steel bar until the bar planting glue is solidified.
On the basis of the technical scheme, when the water drill is used for drilling, the water drill is fixed on the surface of the concrete structure through the water drill positioning frame; when the percussion drill is used for drilling, the rhinestone positioning frame is removed. The invention uses the rhinestone positioning frame which can be repeatedly disassembled and assembled on the surface of the concrete structure to fix the rhinestone frame at the designed position of the bar planting hole for positioning and drilling, thereby ensuring the stability of the rhinestone during drilling and ensuring that the formed rhinestone hole is vertical to the surface of the concrete structure.
On the basis of the technical scheme, the rhinestone positioning frame comprises a first flat plate and a second flat plate, after the rhinestone positioning frame is installed, the first flat plate is tightly attached to and fixed on the surface of a concrete structure, and the second flat plate is perpendicular to the first flat plate. The first flat plate of the rhinestone positioning frame is fixed on the surface of a concrete structure through expansion bolts, and the whole rhinestone positioning frame only consists of two flat plates, is simple and easy to install and is low in cost.
On the basis of the technical scheme, the depth of the water drill hole is 2 times of the depth of the impact drill hole.
On the basis of the technical scheme, the depth of the water drill hole is 100 +/-5 mm, and the depth of the impact drill hole is 200 +/-5 mm.
On the basis of the technical scheme, the last drilling adopts the percussion drill to drill holes so as to ensure that the inner wall of the finally formed bar planting hole is rough and increase the contact area with the bar planting glue.
On the basis of the technical scheme, the steps of drying and cleaning the bar planting holes are as follows: and drying the bar planting holes by using a heating rod, then repeatedly blowing the bar planting holes from the bottom of the holes to the hole openings by using an air compressor, and brushing the bar planting holes by combining with a hairbrush until sundries in the holes are completely cleaned. Clear hole through high strength compressed air can clear away the dust piece in the deep hole to being close to the entrance to a cave, and the rethread brush is with its brush play, can guarantee the clean up in the hole.
On the basis of the technical scheme, the step of pouring the bar planting glue comprises the following steps: and moving an injection opening of the bar planting gun to be close to the bottom of the bar planting hole, injecting glue and drawing out the injection opening simultaneously until the injection volume V of the bar planting glue reaches a calculated value, and stopping injecting the glue. The volume of the bar planting glue is accurately calculated, so that the purposes of full utilization and material saving can be achieved.
On the basis of the technical scheme, the calculation formula of the volume V of the bar-planting glue injection is as follows:
V＝(D2/4×π×L-d2/4×π×L)×K
wherein, D: the diameter of the anchoring hole is d +6 mm; d: the diameter of the steel bar; l: an anchor length; k: the margin coefficient was 1.15.
On the basis of the technical scheme, the advancing speed of the reinforcing steel bar screwed into the reinforcing steel bar implanting hole is not more than 50 mm/s. According to the invention, the steel bar planting holes are screwed in along the thread direction, and the advancing speed of the steel bars is adjusted, so that full steel bar planting glue is filled between the steel bars and the hole walls.
The concrete structure ultra-deep post-anchoring construction method provided by the invention comprises the following specific steps:
step 1, anchoring a rhinestone 1 on the surface 2 of a concrete structure through a rhinestone positioning frame 11, and selecting a rhinestone drill bit 10 matched with a designed aperture for drilling;
step 4, repeating the step 3 until the total drilling depth reaches the designed hole forming depth to form a bar planting hole 7;
and 6, cleaning the rebar hole 7 by adopting high-strength compressed air through the air compressor 6, inserting the air pump pipe 60 into the rebar hole, adjusting the air pressure of the air compressor 6 to 7bar, repeatedly cleaning dust and debris in the hole from the hole bottom to the hole opening, repeatedly brushing the part close to the hole opening by using a brush until all impurities in the hole are cleaned.
step 8, cleaning the surface of the steel bar to be implanted, immediately putting the steel bar into the bar planting hole after the glue injection is completed, screwing the steel bar into the bar planting hole along the screw thread direction, avoiding the bar planting glue from being screwed out to cause the bar planting glue to be not full when screwing in, and controlling the advancing speed of the steel bar to be 50 mm/s.
On the basis of the technical scheme, the step 2 specifically comprises the following steps:
the rhinestone positioning frame 11 is fixed through an expansion screw, a rhinestone drill bit is aligned with a designed hole position, a water drill hole 3 is formed by lightly drilling, slag is returned by pressurized water in the drilling process, the drill bit is withdrawn after the drill bit drills into 100mm, and a drill core is taken out.
On the basis of the technical scheme, the step 3 specifically comprises the following steps:
loosening the expansion screw of the rhinestone positioning frame, and taking down the rhinestone 1; the impact drill 4 is manually held, and the drill bit 40 of the impact drill is inserted into the positioning hole formed by the hole, so that the hole is drilled.
On the basis of the above technical solution, step 7 specifically includes:
the calculation formula of the volume of the embedded bar glue is as follows: v ═ D2/4×π×L-d2/4 × π × L) × K, D: anchor hole diameter ═ d +6mm, d: diameter mm of the steel bar, L: anchoring length mm, K: the margin factor was 1.15.
The method can meet the requirement of performing post-anchoring construction under the depth of 600 mm-1000 mm.
The technical solution of the present invention is illustrated below by the following drilling scheme:
the depth of the target bar planting hole is 900 mm.
The first step is as follows: drilling a water drill 1 into a concrete structure to form a water drill hole 3, wherein the depth of the water drill hole 3 is 100 mm;
the second step is that: the water drill 1 is disassembled, the water drill 3 is drilled continuously by the impact drill 4, the impact drill 40 matched with the designed aperture is selected to drill continuously for 200mm, then the impact drill is taken out, the water drill 1 is fixed on the surface of the concrete structure through the water drill fixing frame 11, and the water drill is drilled continuously for 100 mm;
and repeating the second step once, finally, continuously drilling along the water drilling hole 3 by using the impact drill 4, selecting the impact drill bit 40 matched with the designed aperture to continuously drill for 200mm, and taking out the impact drill, wherein the preset depth is 900mm, namely the bar planting hole 7.
In the description of the present invention, it should be noted that in the following embodiments, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A concrete structure ultra-deep post-anchoring construction method is characterized by comprising the following steps:
s1, drilling a hole on the surface of the concrete structure by using a water drill to form a water drill hole vertical to the surface of the concrete structure;
s2, adopting an impact drill to drill continuously along the water drill hole to form an impact drill hole;
s3, adopting a water drill to drill continuously along the impact drill hole to form a water drill hole;
s4, alternately repeating S2 and S3 for a plurality of times, wherein the depth of the drill hole drilled by the water drill each time is larger than that of the drill hole drilled by the impact drill each time until the depth reaches the designed hole-forming depth, and a bar-planting hole is obtained;
s5, drying and cleaning the tendon planting holes; and (4) pouring the bar planting glue, screwing the steel bar into the bar planting hole along the thread direction, and fixing the steel bar until the bar planting glue is solidified.
2. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: when the water drill is used for drilling, the water drill is fixed on the surface of the concrete structure through a water drill positioning frame; when the percussion drill is used for drilling, the rhinestone positioning frame is removed.
3. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: the rhinestone positioning frame comprises a first flat plate and a second flat plate, after the rhinestone positioning frame is installed, the first flat plate is tightly attached to and fixed on the surface of a concrete structure, and the second flat plate is perpendicular to the first flat plate.
4. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: and the depth of each drilling hole by adopting the water drill is 2 times of the depth of each drilling hole by adopting the impact drill.
5. The ultra-deep post-anchoring construction method of a concrete structure according to claim 4, wherein: the depth of drilling holes by adopting a water drill is 100 +/-5 mm, and the depth of drilling holes by adopting a percussion drill is 200 +/-5 mm.
6. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: and drilling the last drilling by adopting a percussion drill.
7. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: the steps of drying and cleaning the tendon-planting holes are as follows: and drying the bar planting holes by using a heating rod, then repeatedly blowing the bar planting holes from the bottom of the holes to the hole openings by using an air compressor, and brushing the bar planting holes by combining a brush until all impurities in the holes are cleaned up.
8. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: the step of pouring the bar planting glue comprises the following steps: and moving an injection opening of the bar planting gun to be close to the bottom of the bar planting hole, injecting glue and drawing out the injection opening simultaneously until the injection volume V of the bar planting glue reaches a calculated value, and stopping injecting the glue.
9. The ultra-deep post-anchoring construction method of a concrete structure according to claim 8, wherein: the calculation formula of the bar planting glue filling volume V is as follows:
V＝(D2/4×π×L-d2/4×π×L)×K
wherein, D: the diameter of the anchoring hole is d +6 mm; d: the diameter of the steel bar; l: an anchor length; k: the margin coefficient was 1.15.
10. The ultra-deep post-anchoring construction method of a concrete structure according to claim 1, wherein: the advancing speed of the reinforcing steel bar screwed into the bar planting hole is 50 mm/s.
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