CN107227733A - A kind of bored concrete pile steel reinforcement cage cutting method under water - Google Patents
A kind of bored concrete pile steel reinforcement cage cutting method under water Download PDFInfo
- Publication number
- CN107227733A CN107227733A CN201710517701.6A CN201710517701A CN107227733A CN 107227733 A CN107227733 A CN 107227733A CN 201710517701 A CN201710517701 A CN 201710517701A CN 107227733 A CN107227733 A CN 107227733A
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- China
- Prior art keywords
- drill bit
- steel reinforcement
- reinforcement cage
- bar
- under water
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of bored concrete pile steel reinforcement cage cutting method under water, and the drilling rod by using two kinds of drill bits directly with convolution rig is connected, and realizes the cutting to steel reinforcement cage under water.One kind is rig fixed, using conflict diffused drill bit；It is another be fixed absolute altitude in reinforcing bar cage location, planar movement rig is cut in the certain absolute altitude of steel reinforcement cage.For cutting and the reinforcing bar of cut-out and cut wound, finally examined with tensioning punching jack, such as also partly link, then directly broken with punching jack.Present invention is generally directed to during Underwater pile construction, the processing mode after the failure of bored concrete pile first watering reduces the impact steel bar reinforced cage of processing, accelerating construction progress.The present invention has easy construction, and safety coefficient is high, and simple in construction, handling ease, speed of application is fast, saves construction cost, the advantages of shortening the duration.It is particularly suitable for use in the construction of bored concrete pile.
Description
Technical field
The invention belongs to underwater concrete pouring pile driving construction field, and in particular to a kind of bored concrete pile steel reinforcement cage cutting method under water.
Background technology
At present, pile foundation is all largely used in all kinds of engineering constructions, cast-in-situ bored pile is the first choice on heavy construction basis, is bored
The construction of hole pouring pile, has been a highly developed construction method, when being widely used in foundation engineering, and irrigating concrete process
Due to reasons such as machinery, equipment, when have perfusion failure phenomenon, the bored concrete pile of processing failure is usually whole stake slabstone backfill, again
Punching, time-consuming, Fei Cai, the amount of doing over again is big etc..Do not consider the influence such as casing leak, collapse hole, analyze its perfusion failure reason main
Have several：1st, indivedual construction technologies and commanding or operating personnel error；2nd, it is improper using material, or concrete isolation and plugging；
3rd, engineering machinery, breaks down suddenly, it is impossible to exclude in time, again without under sufficient plant equipment preparation；4th, it is other prominent
Hair event, such as traffic congestion, road destroy by rush of water.
Illustrated by taking certain building site as an example.
Pile foundation aperture is 1.5m, and hole depth is 33.18m.Make, steel reinforcement cage cage bar is installed and be：φ 22, overall length is：32m.Evening 7
Point 40 is distinguished behind hole, carries out cast Underwater Concrete.First watering is very smooth, and the car concrete of continuous pouring two, counts 12m3Left and right.When 8: 20
When dividing the 3rd car concrete of cast, concrete pump truck hydraulic fluid leak, it is impossible to work.Use crane instead and hang and send concrete to construct, to 9 points, conduit has been blocked up
Plug, concrete can not be irrigated, and rescued through all one's effort, be also unable to dredging conduit, building site（Person in charge and supervising engineer）Filling can only be made
Note failure, withdrawing conduit, site clearing.Drilling rod is installed to take out slag and inhale concrete and cement mortar to 3:00 AM, measured in hole depth 28m, hole
Still there are 5m concretes.As Fig. 1 shows：
In view of still have 28m steel reinforcement cage in hole, and such as backfill, then impacted with impact drill completely, second of pore-forming had both been difficult reinforcing bar
Cage is destroyed, and tangible unfortunate.Therefore this patent is intended providing a kind of bored concrete pile steel reinforcement cage cutting method and corresponding cutting equipment under water,
To solve the practical problem of engineering.
The content of the invention
The problem of existing for prior art, the present invention is solution problems of the prior art, the technical side of use
Case is as follows：
A kind of bored concrete pile steel reinforcement cage cutting method under water, it is characterised in that：Comprise the following steps：
Step 1: being connected to the drill bit with circumferentially cutting tooth on rotary rig, steel reinforcement cage hole center is directed at, lower drill bit will
Under drill bit concrete top surface is remained to bottom hole；
Step 2: after drill bit reaches bottom hole, starting rig, steel reinforcement cage cage bar under water being cut using horizontal resection tooth；
Step 3: after the completion of anticipation cutting, drill bit being taken out, detects that reinforcing bar is using tensioning punching jack and oil pump device
No cut-out；
Step 4: steel reinforcement cage takes out steel reinforcement cage entirety after completely cutting through from underwater cast-in-place pile.
The drill bit is that bottom hole expands drill bit, and drill bit is connected to the support bar group by the symmetrical branch of some circumferences below drilling rod
Into, support bar is hinged with drilling rod, can be rotated around with drilling rod tie point, a piece conflict bar 7 of connection in the middle part of each support bar, contradict bar with
Connected, be hinged between connecting rod and support bar and conflict bar by connecting rod between each support bar, under nature, contradicted bar bottom and dash forward
For each support bar bottom, in drill bit decentralization process, contradict bar and contacted at first with bottom hole, contradict the upward thrust of bar
Under, connecting rod struts each support bar so that support bar bottom cutting teeth is contacted with bottom reinforcement bars cage.
The steel alloy tooth that described support bar bottom connection is provided projectingly in the horizontal direction, for circumgyration incision.
When described drill bit is that bottom hole expands drill bit, drilling rod rotation is downward, deepens cutting.
Described drill bit is taper iron sand wheel drill bit, and drill bit bottom is a round iron plate, and round iron plate is vertically connected on brill
Bar bottom, is connected between round iron plate top surface edge and drilling rod by welding branch bar, forms a brill being integrally conical
Head.
Described round iron plate bottom margin is welded with the steel alloy tooth of a whole circle, for circumgyration incision.
When drill bit is taper iron sand wheel drill bit, rig is moved horizontally, all around, the purpose of cutting reinforcing cage is reached.
The specific detection process of the step 3 is：When using punching jack（Easily operated for workman, with small top）
When drawing reinforcing bar force value smaller, produce elongation greatly, represent reinforcing bar and completely cut through；It is no corresponding when there is certain stretching force
Elongation when, represent reinforcing bar and be not completely severed, then broken reinforcing bar using tensioning punching jack；When tensioning force value is reached
During 18t（Single top pull power feasible value）, represent reinforcing bar and do not wear and tear, then answer repeat step one and step 2 to continue to cut reinforcing bar.
The invention has the advantages that：
The invention provides a kind of cutting method of bored concrete pile steel reinforcement cage under water, and two kinds of target drills are devised, realized to surplus
Effective cutting of remaining steel reinforcement cage bottom, so that overall lifting steel reinforcement cage, overcomes in the prior art, water during for perfusion failure stake
The processing of descending reinforcing cage, backfills slabstone, punching is time-consuming again, Fei Cai, the big amount of doing over again the problems such as, so as to greatly save construction
Human and material resources, have saved the engineering time, improve efficiency of construction.
Brief description of the drawings
Fig. 1 for steel reinforcement cage in being drilled in the present invention after underwater cast-in-place pile perfusion failure view；
Fig. 2 is that the first cutting equipment bottom hole expands drill bit structure schematic diagram；
Fig. 3 is the cage bar cutting section schematic diagram under expansion drill bit cutting；
Fig. 4 is second of cutting equipment taper bit structural representation；
Fig. 5 is the cage bar cutting section schematic diagram under circular bite is cut；
Wherein：1st, steel reinforcement cage, 2- cage bars, 3- reinforcements, 4- casings, 5- suspension ring, 6- ring flanges, 7- conflict bars, 8- steel alloy teeth,
9- drilling rods, 10- branch holds in both hands bar, 11- cutting sections.
Embodiment
Below by embodiment, and with reference to accompanying drawing, to technical scheme, it is described in further detail, such as schemes
Shown in 1-5, the present invention uses the following two kinds cutting equipment, and steel reinforcement cage 1 under water is cut：
The cutting bit of the first cutting equipment expands drill bit to contradict rod aperture bottom；
Expanded using bottom hole to bottom hole under drill bit, drill bit, contradict bar 7 and contacted with bottom hole face, improve its drill bit structure, steel alloy tooth
8 levels are welded on each support bar of drill bit outer edge, as shown in Figure 2.
This kind of drill bit is arranged on rotary rig, alignment hole center, lower drill bit.The drill bit is in no arrival bottom hole（Pour
The concrete top surface built）Before, its bit diameter very little, only 80cm, it is impossible to and steel reinforcement cage is in contact in hole.When reach bottom hole, its
Contradict bar and contradict bottom hole face, drill bit opens, rig rotation, progressively using steel alloy tooth, mill cut hole bottom reinforcing bar.
Cutting form is horizontal direction, progressively downwards, deepens cutting, such as Fig. 3 shows.
Steel reinforcement cage and hole center on concrete face may have some off normals, therefore produce three possibility to cage bar 2：
1. completely cut through；
2. local fray；
3. do not move completely.
For these three situations, it will be detected with tensioning punching jack, oil pump.
1. when stretching force is smaller, the elongation of generation is big, then represents the reinforcing bar and necessarily have been turned off；
2. when there is certain stretching force, when but without corresponding elongation, just broken using tensioning punching jack；
3. when stretching force has 18t（Single top pull power feasible value）During left and right, illustrate that the root reinforcing bar does not fray, then should continue mill and cut,
Part is eventually formed to fray, then tensioning, break reinforcing bar；
Last entirety lifts steel reinforcement cage.
It is easy to operate as the cutting method of cutting equipment using bottom hole expansion drill bit, it is practical, but in Specific construction
When, it should be noted that：
1. start to be cut with rig mill, speed is slow, in case the brill leaf opened, is blocked by the reinforcing bar of steel reinforcement cage, causes bit freezing.
2. mill cuts part should be close proximity on the face of concrete, otherwise when mill is cut, reinforcing bar produces outside amount of deflection, causes to skid,
The effect that reduction mill is cut.
3. mill that reinforcing bar should be tried one's best in theory is cut, retain some reinforcing bar incomplete cut-offs, both avoided whole steel reinforcement cage
Stirred, can use minimum stretching force to break cage bar again.
The cutting bit of second of cutting equipment is taper " iron sand wheel " drill bit；
Using taper iron sand wheel drill bit, such as Fig. 4 shows, by steel alloy Dental soldering on round iron plate, and branch bar 10 is total to circular bottom plate
With composition taper bit, taper bit structure can prevent the cage bar 2 of steel reinforcement cage 1 from propping up round iron plate, even if propping up on taper surface,
It can slide, bit freezing when not causing to carry brill.
The drill bit is arranged on drilling rod, then by the in rotary moving of rig, the reinforcing bar of steel reinforcement cage 1 mill cut.After mill is cut, adopt
Method of pulling up is detected with identical, steel reinforcement cage reinforcing bar is broken, by the whole taking-up out of hole of steel reinforcement cage.
During using taper bit, it is noted that Railway Project in construction：
1. mill cuts position, it should try one's best and lean on concrete face, to reduce amount of deflection and the skidding of steel reinforcement cage reinforcing bar.
2. keeping a close eye on mill cuts the absolute altitude at position, it is necessary to make length positioning on drilling rod, and check drilling machine platform absolute altitude,
Mill is set to cut position substantially in same level, as Fig. 5 shows.
3. because iron tyre diameter is small, only 0.9m will grind the steel reinforcement cage for cutting 1.3m, it must just make rig centering that iron tyre is installed
Afterwards, position is cut to mill under, then carries out front, rear, left and right all directions mill and cuts movement.It is pulled in two chain blocks and holds rig
It is reaction force on rail, is moved horizontally to rig, and note average rate, slow mobile drill, deepens otch.
4. because hole is deeper, the nearly 28m length of drilling rod, while rotation, drilling rod has swing, and steel alloy tooth is while mill is cut
There can be Effects to reinforcing bar, to pay special attention to welding quality, smoothly complete mill and cut task.
This method is in construction application, and speed is slightly slow, again omnirange mobile drill, there is certain difficulty in constructing operation
Degree, but least risk.
Protection scope of the present invention is not limited to the above embodiments, it is clear that those skilled in the art can be to this hair
It is bright to carry out various changes and deformation, without departing from scope and spirit of the present invention.If these are changed and deformation belongs to the present invention
In the range of claim and its equivalent technologies, then including the intent of the present invention is also changed and deformed comprising these.
Claims (8)
1. a kind of bored concrete pile steel reinforcement cage cutting method under water, it is characterised in that：Comprise the following steps：
Step 1: being connected to the drill bit with circumferentially cutting tooth on rotary rig, steel reinforcement cage hole center is directed at, lower drill bit will
Under drill bit concrete top surface is remained to bottom hole；
Step 2: after drill bit reaches bottom hole, starting rig, steel reinforcement cage cage bar under water being cut using horizontal resection tooth；
Step 3: after the completion of anticipation cutting, drill bit being taken out, detects that reinforcing bar is using tensioning punching jack and oil pump device
No cut-out；
Step 4: steel reinforcement cage takes out steel reinforcement cage entirety after completely cutting through from underwater cast-in-place pile.
2. a kind of bored concrete pile as claimed in claim 1 steel reinforcement cage cutting method under water, it is characterised in that：The drill bit is bottom hole
Expand drill bit, drill bit is connected to below drilling rod by the support bar group of the symmetrical branch of some circumferences into support bar is hinged with drilling rod, respectively
A piece conflict bar of connection in the middle part of support bar, contradicts and is connected between bar and each support bar by connecting rod, connecting rod and support bar and conflict
It is hinged between bar.
3. a kind of bored concrete pile as claimed in claim 2 steel reinforcement cage cutting method under water, it is characterised in that：Described support bar bottom
The steel alloy tooth that portion's connection is provided projectingly in the horizontal direction, for circumgyration incision.
4. a kind of bored concrete pile as claimed in claim 2 steel reinforcement cage cutting method under water, it is characterised in that：When described drill bit is
When bottom hole expands drill bit, drilling rod rotation is downward, deepens cutting.
5. a kind of bored concrete pile as claimed in claim 1 steel reinforcement cage cutting method under water, it is characterised in that：Described drill bit is cone
Shape drill bit, drill bit bottom is a round iron plate, and round iron plate is vertically connected on drilling rod bottom, and round iron plate top surface edge is with boring
Connected between bar by welding branch bar, form a drill bit being integrally conical.
6. a kind of bored concrete pile as claimed in claim 5 steel reinforcement cage cutting method under water, it is characterised in that：Described round iron plate
Bottom margin is welded with the steel alloy tooth of a whole circle, for circumgyration incision.
7. a kind of bored concrete pile as claimed in claim 5 steel reinforcement cage cutting method under water, it is characterised in that：When drill bit is taper iron
During emery wheel drill bit, rig is moved horizontally, all around, the purpose of cutting reinforcing cage is reached.
8. a kind of bored concrete pile as claimed in claim 1 steel reinforcement cage cutting method under water, it is characterised in that：The tool of the step 3
Body detection process is：When the tension reinforcing steel bar force value of punching jack is smaller, produces elongation greatly, represent reinforcing bar and cut completely
It is disconnected；When there is certain stretching force no corresponding elongation, representing reinforcing bar and not being completely severed, then utilizing tensioning punching
Jack breaks reinforcing bar；When tensioning force value reaches 18t, represent reinforcing bar and do not wear and tear, then answer repeat step one and step 2
Continue to cut reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517701.6A CN107227733A (en) | 2017-06-29 | 2017-06-29 | A kind of bored concrete pile steel reinforcement cage cutting method under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517701.6A CN107227733A (en) | 2017-06-29 | 2017-06-29 | A kind of bored concrete pile steel reinforcement cage cutting method under water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107227733A true CN107227733A (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517701.6A Pending CN107227733A (en) | 2017-06-29 | 2017-06-29 | A kind of bored concrete pile steel reinforcement cage cutting method under water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724253A (en) * | 2017-11-22 | 2018-02-23 | 天津城建大学 | A kind of hollow drill and sweep-out method for being used to remove cantilever construction prestressing tendon |
| CN109098657A (en) * | 2018-10-24 | 2018-12-28 | 云南建投基础工程有限责任公司 | A kind of high-voltage water jet device and method of the processing erratic boulder in conjunction with rotary pile-digging machine |
| CN109183783A (en) * | 2018-10-24 | 2019-01-11 | 南宁职业技术学院 | It is a kind of to exempt from broken apart concrete filling pile head |
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| JPH05222722A (en) * | 1992-02-08 | 1993-08-31 | Mineichi Iwamoto | Pile head surcharge disposal sheet |
| CN201400958Y (en) * | 2009-04-16 | 2010-02-10 | 中铁六局集团有限公司 | Cage pressing device for reinforcing cage |
| CN103850237A (en) * | 2012-12-03 | 2014-06-11 | 同济大学 | Blade-cut-in type soft soil multi-point displacement meter anchor head |
| CN205047161U (en) * | 2015-10-08 | 2016-02-24 | 福建永强岩土股份有限公司 | Dig soon and expand subdrilling head |
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2017
- 2017-06-29 CN CN201710517701.6A patent/CN107227733A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05222722A (en) * | 1992-02-08 | 1993-08-31 | Mineichi Iwamoto | Pile head surcharge disposal sheet |
| CN201400958Y (en) * | 2009-04-16 | 2010-02-10 | 中铁六局集团有限公司 | Cage pressing device for reinforcing cage |
| CN103850237A (en) * | 2012-12-03 | 2014-06-11 | 同济大学 | Blade-cut-in type soft soil multi-point displacement meter anchor head |
| CN205047161U (en) * | 2015-10-08 | 2016-02-24 | 福建永强岩土股份有限公司 | Dig soon and expand subdrilling head |
Non-Patent Citations (1)
| Title |
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| 南峰: "《钻孔灌注桩处理水下钢筋笼的切割实例》", 《陕西地质》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107724253A (en) * | 2017-11-22 | 2018-02-23 | 天津城建大学 | A kind of hollow drill and sweep-out method for being used to remove cantilever construction prestressing tendon |
| CN109098657A (en) * | 2018-10-24 | 2018-12-28 | 云南建投基础工程有限责任公司 | A kind of high-voltage water jet device and method of the processing erratic boulder in conjunction with rotary pile-digging machine |
| CN109183783A (en) * | 2018-10-24 | 2019-01-11 | 南宁职业技术学院 | It is a kind of to exempt from broken apart concrete filling pile head |
| CN109183783B (en) * | 2018-10-24 | 2023-10-24 | 南宁职业技术学院 | Breaking-free separated pile head of concrete filling pile |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171003 |
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| RJ01 | Rejection of invention patent application after publication |