CN106638655B - Conehead muscle body post-tensioning pile foundation and construction technology - Google Patents
Conehead muscle body post-tensioning pile foundation and construction technology Download PDFInfo
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- CN106638655B CN106638655B CN201710097144.7A CN201710097144A CN106638655B CN 106638655 B CN106638655 B CN 106638655B CN 201710097144 A CN201710097144 A CN 201710097144A CN 106638655 B CN106638655 B CN 106638655B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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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
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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
- E02D5/58—Prestressed concrete piles
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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)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The present invention discloses a kind of conehead muscle body post-tensioning pile foundation and construction technology, including pile body, muscle body is set at the center of the pile body, the outer sheath of the muscle body is installed with disrance sleeve, the top of the muscle body is pierced by pile body and is locked by anchorage, and the bottom end of the muscle body is equipped with the thin taper of thick middle surrounding and casts anchor body.The present invention is casted anchor body by the way that conical head is arranged on muscle body, when muscle body is inserted into concrete grout, taper casts anchor body compared with traditional plate casts anchor body, the frictional force that concrete grout is reduced between the body that casts anchor, reduce the decentralization resistance of muscle body, solve causes muscle body to tilt after long auger guncreting in joint bar body construction technique because resistance is excessive, bending, the case where being inserted into low efficiency, improve muscle body decentralization working efficiency and work quality, the body that casts anchor is connected through a screw thread with muscle body, realize the replaceability of muscle body, solve maintenance of the later period to conehead muscle body post-tensioning pile foundation.
Description
Technical field
The present invention relates to resistance to plucking anti-floating basic fields, and in particular to a kind of conehead muscle body post-tensioning pile foundation and construction technology.
Background technique
With the development and utilization of the underground space, the anti-floating problem of building is outstanding day by day, and building basis bears to pull out load
Lotus is increasing, in level of ground water area higher, when some underground structures are lower than Soil Surrounding water level, underground structure and structure
Building object has structural anti-buoyancy, acts on to offset the water in soil to the buoyancy of fabric structure, it usually needs adopt
Measure of anti float is taken, existing measure of anti float is often floated using setting uplift pile or anti-float anchor rod to constrain underground water to building
Power plays building and is not easy to pull out role when floating.
Uplift pile is that steel reinforcement cage is placed in concrete pile body, due to the lower tensile strength of concrete, so that pile body is mixed
Solidifying soil is also easy to produce crack under a stretching force, and with the gradually expansion in crack, the inside reinforcing bar of pile body is easy to be etched, serious shadow
Ring pile body stress safety.In order to avoid the development in resistance to plucking stake body crack, need to control the dosage of reinforcing bar by Checking Computation of Cracks,
It generally requires to configure a large amount of reinforcing bar, causes unnecessary waste.
Summary of the invention
The object of the present invention is to provide a kind of conehead muscle body post-tensioning pile foundation and construction technologies, in one end of presstressed reinforcing steel body
Using taper header structure, the frictional force between muscle body and concrete grout is effectively reduced, so that the decentralization resistance of muscle body is reduced,
Construction efficiency is improved, solves the case where muscle body transfers not in place or bend fracture.
The purpose of the present invention is be achieved through the following technical solutions:
A kind of conehead muscle body post-tensioning pile foundation, including pile body set muscle body, the outside of the muscle body at the center of the pile body
Set is installed with disrance sleeve, and the top of the muscle body is pierced by pile body and is locked by anchorage, and the bottom end of the muscle body is equipped with centre
The thin taper of thick surrounding is casted anchor body.
In preferred embodiments, the body that casts anchor is conical structure, pyramidal structure or cross wimble structure.
In preferred embodiments, it is connected on the body that casts anchor with muscle body at the center of junction equipped with internal thread hole, institute
The connecting pin for stating muscle body is equipped with the external screw thread matched with the internal thread hole.
In preferred embodiments, the body that casts anchor is equipped with the connection boss of the fixed disrance sleeve, it is described every
It is connected through a screw thread between casing and connection boss.
In preferred embodiments, the outside that connection boss is located on the body that casts anchor, which is equipped with, is used for guiding protective casing
Mobile guiding boss, for the protective case pipe sleeve outside disrance sleeve, it is convex that one end of the protection sleeve pipe is sleeved on the guiding
It on platform, and can move reciprocatingly along the guiding boss, the protection sleeve pipe other end connects vibration hammer.
In preferred embodiments, the protection sleeve pipe is equipped with around the equally distributed positioning branch of the protection sleeve pipe
Frame, the locating support is perpendicular to the protection sleeve pipe.
Joint bar body construction technique after a kind of pressure concrete injecting of long spire pore-forming center, process flow is successively are as follows: surveying setting-out is fixed
Hole location, drilling machine drill in place, long screw drill rod drilling, coagulation soil pressure fill, the insertion of conical head muscle body, apply reinforcing body pretightning force.
In preferred embodiments, comprising the following steps:
The conical head body that casts anchor first is fixed on one end of muscle body, then disrance sleeve is sleeved on muscle body, and by separation sleeve
Pipe with connect boss and fix, obtain conical head muscle body assembly；
The upper end of conical head muscle body assembly is fixedly connected with vibration hammer, vibration hammer is lifted by crane using suspender, makes conical head muscle
Body assembly be equipped with conical head cast anchor body one end straight down, constitute conical head muscle body lowering system；
Conical head muscle body lowering system is slowly transferred and alignment hole center, and hanging down for conical head muscle body is kept during hanging
Directly；
After conical head muscle body lower part enters concrete, under slow first under the Gravitative Loads of conical head muscle body lowering system
It puts；After transfer to sink naturally, vibration hammer is opened, carries out control conical head muscle body decentralization depth with vibration；It is shaking
During dynamic, it is ensured that lifting wirerope with power, is tilted to prevent conical head muscle body and is inserted into always；Stop vibration after reaching projected depth
It is dynamic, vibration hammer is dismantled by rotation straight screw sleeve.
It in preferred embodiments, include following step before the conical head muscle body assembly is fixedly connected with vibration hammer
It is rapid:
It is set with protection sleeve pipe in the outside of conical head muscle body assembly, and protection sleeve pipe and guiding boss are cooperatively connected, it will
The upper end of protection sleeve pipe is fixedly connected with vibration hammer.
In preferred embodiments, before the step of conical head muscle body assembly is fixedly connected with vibration hammer, in institute
It states and several locating supports is installed on conical head muscle body assembly, locating support is tied up by tied silk is fixed on conical head muscle body assembly
On.
In preferred embodiments, the method for applying reinforcing body pretightning force: after concrete reaches solidification requirement,
The jack cylinder of machine drawing tool is retracted to initial position, and the upper end of muscle body is bitten with jack occlusion intermediate plate, starts tensioning pump thousand
Jin top keeps oil cylinder overhanging, and the anchorage positioned at upper end muscle body acts against on muscle body supporting plate under the effect of top surface outside jack, continues to add
Pressure, the occlusion mechanism inside jack are stung tight muscle body and are pulled outwardly, when the oil pressure gauge on tensioner reaches setting pressure release,
It unclamps, completes the application of muscle body pretightning force.
The invention has the benefit that
1, the present invention is casted anchor body by the way that conical head is arranged on muscle body, when muscle body is inserted into concrete grout, under taper
Anchor body is casted anchor relative to traditional plate compared with body, the frictional force for reducing concrete grout between the body that casts anchor reduces muscle
The decentralization resistance of body, solving leads to muscle body because resistance is excessive in joint bar body construction technique after long auger cast-with-pressure concrete pile
The case where inclination, bending, insertion low efficiency, improve muscle body decentralization working efficiency and work quality.
2, the present invention casts anchor body and muscle body is connected through a screw thread, and forms the body that removably casts anchor, and realizes later period replaceable muscle
Body, the interior prestressing force applied of direct removal muscle body, rotation muscle body can unload muscle body, reduce the replacement difficulty of muscle body, i.e.,
Reduce the maintenance cost on basis.
3, present invention setting protection sleeve pipe, solves muscle body during the installation process, damages because muscle body is with concrete friction
Muscle body surface face causes the problem of reducing muscle body intensity, reducing muscle body service life, and protection sleeve pipe is removably, by muscle
After body is installed to setting position, it is direct to protection sleeve pipe on pull out disassembly, reusable protection sleeve pipe reduces use cost.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is the overall structure figure of conehead muscle body post-tensioning pile foundation described in the embodiment of the present invention；
Fig. 2 a be in Fig. 1 A to enlarged drawing；
Fig. 2 b is the B direction view in Fig. 2 a；
Fig. 3 a is the A of another embodiment in Fig. 1 to enlarged drawing；
Fig. 3 b is the C direction view in Fig. 3 a；
Fig. 4 is the overall structure figure of conehead muscle body post-tensioning pile foundation described in another embodiment of the invention；
Fig. 5 be in Fig. 1 D to amplification assumption diagram；
Fig. 6 be in Fig. 1 E to amplification assumption diagram；
Fig. 7 is bored after long spire pore-forming center pressure concrete injecting described in embodiment of the invention another in joint bar body construction technique
The connection structure diagram of forming head muscle body assembly and vibration hammer 13；
Fig. 8 is protection sleeve pipe in joint bar body construction technique after long spire pore-forming center pressure concrete injecting described in the embodiment of the present invention
11 with the connection structure diagram of vibration hammer 13；
Fig. 9 is the process flow of joint bar body construction technique after long spire pore-forming center pressure concrete injecting described in the embodiment of the present invention
Figure.
In figure:
1, pile body；2, muscle body；3, disrance sleeve；4, anchorage；5, cast anchor body；6, flank；7, locating support；8, internal screw thread
Hole；9, boss is connected；10, boss is guided；11, protection sleeve pipe；12, location hole；13, vibration hammer；14, concrete grout；15, straight spiral shell
Line casing；16, stud.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The present invention is further illustrated with specific embodiment below with reference to accompanying drawings.
As shown in Figure 1, a kind of conehead muscle body post-tensioning pile foundation of the embodiment of the present invention, including the pile body formed by concrete
1, the shape of pile body 1 is the shapes such as cylindric, Bamboo-shaped, is equipped with muscle body 2 at the center of the pile body 1, pre- answer can be used in muscle body
Rhabodoid made of the materials such as power fining twisted steel, prestressing force round steel, high-strength bolt, the outer sheath of the muscle body 2 be installed with every
From casing 3, disrance sleeve 3 is pvc pipe, PE pipe, thermoplastic tube or steel pipe etc., is used for isolation bar body and concrete, forms conehead muscle
Body post-tensioning pile foundation.
The top of the muscle body 2 is pierced by pile body 1 and is locked by anchorage 4, and the bottom end of the muscle body 2 is equipped with thick middle surrounding
The thin body 5 that casts anchor, the body 5 that casts anchor is conical structure (as illustrated in figures 2a and 2b), pyramidal structure or cross wimble structure are (as schemed
Shown in 3a and 3b), for example straight cone of the conical structure or rotary table, pyramidal structure such as trigone cone, rectangular pyramid, pentagonal pyramid
More terrace with edges such as the polygonal pyramids bodies such as body, hexagonal pyramid body or triangular platform, truncated rectangular pyramids, five terrace with edges, cross wimble structure include equal around muscle body 2
The flank 6 of even distribution, the cross-sectional shape of the flank 6 are T-shaped (as shown in Figure 3a).
The connection structure casted anchor between body 5 and muscle body 2 is further illustrated so that the body 5 that casts anchor is straight cone as an example below:
As illustrated in figures 2a and 2b, cast anchor be connected on body 5 with muscle body 2 junction center at be equipped with internal thread hole 8, muscle body 2
Connecting pin is equipped with the external screw thread that matches with the internal thread hole 8, is inserted into muscle body 2 in internal thread hole 8, and with the body 5 that casts anchor
Removably be fixedly connected, when muscle body 2 use overlong time, muscle body 2 can be reversely rotated when will reach life termination, to muscle body
2 are replaced, and are avoided the fracture of muscle body 2 and are needed to destroy basic problem, later maintenance cost greatly reduce, and improve
The service life on basis.
It is equipped with the connection boss 9 for fixing the disrance sleeve 3 around the periphery of internal thread hole 8 on the body 5 that casts anchor,
The outside for connecting boss 9 is equipped with external screw thread, in the connecting pin of disrance sleeve 3 equipped with the internal screw thread that connect boss 9 and match, make
Disrance sleeve 3 is threadedly coupled with the body 5 that casts anchor, and realizes the Fast Installation of disrance sleeve 3, and realizes the close of 3 bottom of disrance sleeve
Envelope dismantles muscle body for the later period and creates conditions.
As shown in Figure 4,5, during installing muscle body, in order to which the rear of realization muscle body 2 quickly and efficiently is planted into simultaneously
In order to avoid muscle body be inserted directly into damage caused by concrete friction etc., be installed with protection sleeve pipe in 3 outer cover of disrance sleeve
11, the outside that boss 9 is connected on the body 5 that casts anchor is equipped with the guiding boss 10 mobile for guiding protective casing 11, the protective case
One end of pipe 11 is sleeved on guiding boss 10, another section of connection vibration hammer 13 of the protection sleeve pipe 11, when installing muscle body
Muscle body is driven into concrete grout 14 by vibration, and protection sleeve pipe 11 moves reciprocatingly along the guiding boss 10, that is, protects
Casing 11 vibrates the body 5 that casts anchor, and the body 5 that casts anchor is entered by vibration into concrete grout 14, plays the role of protecting muscle body 2, it is therefore prevented that muscle body
The case where muscle body 2 is bent during lower vibration, it is therefore prevented that disrance sleeve 3 and concrete grout 14 rub and the situation of breakage, to muscle
Protection sleeve pipe 11 directly is extracted using suspender lifting after vibration to designated position under body, realizes the recycling of protection sleeve pipe 11, is reduced
Construction cost.
As shown in Fig. 4,6, the protection sleeve pipe 11, which is equipped with, surrounds the equally distributed locating support of the protection sleeve pipe 11
7, the locating support 7 is at least 2, is separately positioned on protective case perpendicular to the protection sleeve pipe 11, the quantity of locating support 7
The two sides up and down of pipe 11 are fixed for limiting protection sleeve pipe 11 at a distance from 12 wall of surrounding location hole, are equal, making protection sleeve pipe 11
At the center of location hole 12, even if conical head muscle body is moved down along the center vertical of location hole 12, conical head is prevented
Muscle body is due to the unbalance stress of two sides the problem of oblique cutting.
The construction technology of conehead muscle body post-tensioning pile foundation of the invention is applied for joint bar body after the pressure concrete injecting of long spire pore-forming center
Work technique, as shown in figure 9, its process flow is successively are as follows: surveying setting-out determine hole location, drilling machine drill in place, long screw drill rod drilling,
Coagulation soil pressure fills, the insertion of conical head muscle body, applies reinforcing body pretightning force.
The method of surveying setting-out fixed pile:
Smooth location first, surveying setting-out determines hole location on smooth location, and location hole is carried out with measuring instrument in both ends, prevents
Checking at any time when deviation occurs in hole location；Determining hole location is usually to make a call to a deep hole on the ground with drill rod or punch, pours into albarium powder,
The distinguishing marks such as reinforcing rod are plugged at hole location.
The method that drilling machine drills in place:
Drilling machine is leveled from two sides respectively using two-wire hammer method, it is horizontal to guarantee drilling machine, while the verticality for adjusting drilling tool is inclined
Difference is within specification allowed band.Drilling in turn or " jump is beaten " can be taken (one can be jumped depending on soil layer, water level, local environmental conditions
A hole or multiple holes).Pore-forming technique can also select using rotary drilling rig according to formation properties, dive in addition to using long-spiral drilling machine
The different process such as hole hammer, manually digging hole carry out.
The method of long screw drill rod drilling:
According to marked depth is designed, drilling machine keeps long screw drill rod uniform rotation in boring procedure, at the uniform velocity lower to bore, and
Drilling tool in the press-in hole of drilling tool center, is first slightly stopped by delivery pipe using concrete transfer pump before pressure concrete injecting, guarantees to bore door by self weight
Fully open, then pressure concrete injecting, guarantee that concrete burying has at least 0.5m, back promote drilling tool side and be pressed into concrete, it is special when construction
The concrete amount of the promotion speed and indentation that pay attention to drilling tool is adapted, and mentioning drilling speed degree should be by the uniform velocity controlling, and proposing pipe speed should control 1.2
~1.5m/min or so meets saturated sand or powder soil horizon, must not termination of pumping wait expecting, while slowing down and mentioning drilling speed degree, such as silt soil or
Muck soil, mentioning drilling speed degree also should suitably slow down.
The method of conical head muscle body insertion:
The conical head body 5 that casts anchor first is fixed on one end of muscle body 2, then by separation sleeve pipe sleeve 3 on muscle body 2, and will be every
It is fixed from casing 3 with boss 9 is connect, obtains conical head muscle body assembly；In order to avoid conical head muscle body assembly is in decentralization process
Due to the case where lowering velocity is too fast or conical head muscle body assembly is caused to deviate for the non-consolidation of lifting, need in this step in taper
Several equally distributed locating supports are installed on head muscle body assembly, preferred technical solution be the top of muscle body rod body, middle part,
Lower part two sides are required to installation locating support, and the quantity of locating support is at least 3, and locating support is tied up by tied silk and is fixed on
On muscle body rod body 2.
As shown in fig. 7, the upper end of conical head muscle body assembly is removably solid by straight thread casing 15 and vibration hammer 13
Fixed connection, the i.e. connecting pin of vibration hammer 13 are equipped with stud 16, and stud 16 is threadedly coupled with straight thread casing 15, by muscle body 2 and directly
Threaded sleeve 15 is threadedly coupled, and realizes that conical head muscle body assembly is fixedly connected with vibration hammer 13, lifts by crane vibration hammer 13 using suspender,
Make conical head muscle body assembly be equipped with conical head cast anchor body 5 one end straight down, constitute conical head muscle body lowering system；In order to keep away
Exempting from muscle body 2 or disrance sleeve 3 is led to damaged surfaces by the friction of concrete in decentralization process, so as to cause disrance sleeve
The damaged surfaces of 3 damages or muscle body 2, lead to the strength reduction of muscle body 2, therefore in order to solve this defect, as shown in figure 8, can
It is set with protection sleeve pipe 11 in the outside of conical head muscle body assembly, and protection sleeve pipe 11 and guiding boss 10 are cooperatively connected, will be protected
The upper end of protecting pipe 11 is fixedly connected with vibration hammer 13.
Conical head muscle body lowering system is slowly transferred and alignment hole center, and hanging down for conical head muscle body is kept during hanging
Directly；
After conical head muscle body lower part enters concrete, under slow first under the Gravitative Loads of conical head muscle body lowering system
It puts；After transfer to sink naturally, vibration hammer is opened, carries out control conical head muscle body decentralization depth with vibration；It is shaking
During dynamic, it is ensured that lifting wirerope with power, is tilted to prevent conical head muscle body and is inserted into always；Stop vibration after reaching projected depth
It is dynamic, it dismantles and extracts protection sleeve pipe 11.
Promote vibration hammer: Bian Tibian vibrates during vibration hammer lifts, by the uniform velocity controlling, after vibration hammer proposes, using people
Work or mechanical system supply vacant section of stake top, vibrate.
Spoir outward transport: native clearly using small excavator, forklift is put together in time, and night ships it to specified spoir point.
The method for applying reinforcing body pretightning force: after concrete reaches solidification requirement, the jack cylinder of tensioner is shunk
To initial position, the upper end of muscle body 2 is bitten with jack occlusion intermediate plate, starting tensioning pump jack keeps oil cylinder overhanging, is located at upper
It holds the anchorage 4 of muscle body 2 to act against on muscle body supporting plate under the effect of top surface outside jack, continues to pressurize, the occlusion inside jack
Mechanism stings tight muscle body 2 and is pulled outwardly, and release, release when the oil pressure gauge on tensioner reaches setting pressure are completed muscle body and pre-tightened
The application of power.
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (6)
1. a kind of conehead muscle body post-tensioning pile foundation, it is characterised in that: including pile body, muscle body is set at the center of the pile body, it is described
The outer sheath of muscle body is installed with disrance sleeve, and the top of the muscle body is pierced by pile body and is locked by anchorage, the bottom of the muscle body
End is equipped with the thin taper of thick middle surrounding and casts anchor body, equipped with internal screw thread at the center of junction that is connected on the body that casts anchor with muscle body
Hole, the connecting pin of the muscle body are equipped with the external screw thread matched with the internal thread hole, and the body that casts anchor is equipped with described in fixation
The connection boss of disrance sleeve is connected through a screw thread between the disrance sleeve and connection boss, is located on the body that casts anchor and connects
The outside for connecing boss is equipped with the guiding boss mobile for guiding protective casing, and the protective case pipe sleeve is outside disrance sleeve, institute
The one end for stating protection sleeve pipe is sleeved on the guiding boss, and can be moved reciprocatingly along the guiding boss, the protection
The casing other end connects vibration hammer, and the protection sleeve pipe, which is equipped with, surrounds the equally distributed locating support of the protection sleeve pipe, institute
Locating support is stated perpendicular to the protection sleeve pipe.
2. conehead muscle body post-tensioning pile foundation according to claim 1, it is characterised in that: the body that casts anchor is cone knot
Structure, pyramidal structure or cross wimble structure.
3. joint bar body construction technique after a kind of pressure concrete injecting of long spire pore-forming center, which is characterized in that its process flow is successively are as follows: survey
Amount unwrapping wire determine that hole location, drilling machine drills in place, long screw drill rod drilling, the filling of coagulation soil pressure, conical head muscle body is inserted into, to apply reinforcing body pre-
Clamp force specifically includes following steps, the conical head body that casts anchor first is fixed on one end of muscle body, then disrance sleeve is sleeved on muscle body
On, and disrance sleeve is fixed with boss is connect, obtain conical head muscle body assembly；
The upper end of conical head muscle body assembly is fixedly connected with vibration hammer, vibration hammer is lifted by crane using suspender, keeps conical head muscle body total
At be equipped with conical head cast anchor body one end straight down, constitute conical head muscle body lowering system；
Conical head muscle body lowering system is slowly transferred and alignment hole center, keeps the vertical of conical head muscle body during hanging；
After conical head muscle body lower part enters concrete, slowly transferred under the Gravitative Loads of conical head muscle body lowering system first；
After transfer to sink naturally, vibration hammer is opened, carries out control conical head muscle body decentralization depth with vibration；Vibrated
Cheng Zhong, it is ensured that lifting wirerope with power, is tilted to prevent conical head muscle body and is inserted into always；Stop vibration after reaching projected depth, leads to
Cross rotation straight screw sleeve disassembly vibration hammer.
4. joint bar body construction technique after the pressure concrete injecting of long spire pore-forming according to claim 3 center, which is characterized in that in institute
State before conical head muscle body assembly is fixedly connected with vibration hammer the following steps are included:
It is set with protection sleeve pipe in the outside of conical head muscle body assembly, and protection sleeve pipe and guiding boss are cooperatively connected, will be protected
The upper end of casing is fixedly connected with vibration hammer.
5. joint bar body construction technique after the pressure concrete injecting of long spire pore-forming according to claim 3 or 4 center, which is characterized in that
Before the step of conical head muscle body assembly is fixedly connected with vibration hammer, it is several fixed to install on the conical head muscle body assembly
Position bracket, locating support is tied up by tied silk to be fixed on conical head muscle body assembly.
6. joint bar body construction technique after the pressure concrete injecting of long spire pore-forming according to claim 3 center, which is characterized in that described
The method for applying reinforcing body pretightning force: after concrete reaches solidification requirement, the jack cylinder of tensioner is retracted to start bit
It sets, the upper end of muscle body is bitten with jack occlusion intermediate plate, starting tensioning pump jack keeps oil cylinder overhanging, positioned at the anchor of upper end muscle body
Tool acts against on muscle body supporting plate under the effect of top surface outside jack, continues to pressurize, the occlusion mechanism inside jack stings tight muscle body
It is pulled outwardly, when the oil pressure gauge on tensioner reaches setting pressure, release, release, complete the application of muscle body pretightning force.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107245997A (en) * | 2017-08-09 | 2017-10-13 | 陕西桩鑫建设工程有限公司 | A kind of Dense Broken Stone Peg pile-forming equipment and bore forming method |
| CN108301428A (en) * | 2018-03-23 | 2018-07-20 | 健安诚（内蒙古）新能源科技有限公司 | The pre- tensioning post-tensioning pile foundation of stake top and construction technology |
| CN108360514B (en) * | 2018-04-12 | 2020-07-07 | 河海大学 | Rotary extrusion double-layer nested dish-shaped enlarged footing anchor rod and use method thereof |
| CN109183786A (en) * | 2018-10-16 | 2019-01-11 | 徐畅宇 | A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method |
| CN109944244A (en) * | 2019-04-16 | 2019-06-28 | 安徽同济建设集团有限责任公司 | A kind of anti-float anchor rod and its construction method |
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| CN105714823A (en) * | 2016-03-22 | 2016-06-29 | 兰州理工大学 | Recoverable quick-anchoring and body-expanding type anchor rope and construction method |
| KR20160080334A (en) * | 2014-12-29 | 2016-07-08 | (주)대영 | Ground pressure type soil nailing apparatus |
| CN206554106U (en) * | 2017-02-22 | 2017-10-13 | 北京健安诚岩土工程有限公司 | Conehead muscle body posttension pile foundation |
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| KR20070058940A (en) * | 2005-12-05 | 2007-06-11 | 신종덕 | Internal fixer for anchor having releasable tensioning steel wire |
| KR20100054354A (en) * | 2008-11-14 | 2010-05-25 | (주) 신풍컨설턴트 | A pre - stressed extension anchor |
| CN102418339A (en) * | 2011-09-28 | 2012-04-18 | 上海强劲地基工程股份有限公司 | Novel energy-saving anti-floating pile |
| CN102644279A (en) * | 2012-04-28 | 2012-08-22 | 从卫民 | Uplift pile with prestress reinforced plastic rods |
| CN103485337A (en) * | 2013-10-12 | 2014-01-01 | 中勘冶金勘察设计研究院有限责任公司 | Anti-floating anchor pile construction method |
| CN103603379A (en) * | 2013-12-03 | 2014-02-26 | 葛建 | Anti-floating system combining anti-floating cement soil pile and anti-floating anchor rod and construction process of anti-floating system |
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| KR20160080334A (en) * | 2014-12-29 | 2016-07-08 | (주)대영 | Ground pressure type soil nailing apparatus |
| CN104929117A (en) * | 2015-06-26 | 2015-09-23 | 建研地基基础工程有限责任公司 | Concrete pole body composite anchor rod and construction method thereof |
| CN105714823A (en) * | 2016-03-22 | 2016-06-29 | 兰州理工大学 | Recoverable quick-anchoring and body-expanding type anchor rope and construction method |
| CN206554106U (en) * | 2017-02-22 | 2017-10-13 | 北京健安诚岩土工程有限公司 | Conehead muscle body posttension pile foundation |
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