CN202337980U - Uplift structural body capable of recovering stiffening pile of reinforced solid - Google Patents
Uplift structural body capable of recovering stiffening pile of reinforced solid Download PDFInfo
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- CN202337980U CN202337980U CN 201120499712 CN201120499712U CN202337980U CN 202337980 U CN202337980 U CN 202337980U CN 201120499712 CN201120499712 CN 201120499712 CN 201120499712 U CN201120499712 U CN 201120499712U CN 202337980 U CN202337980 U CN 202337980U
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Abstract
The utility model provides an uplift structural body capable of recovering a stiffening pile of a reinforced solid. The uplift structural body comprises a pillar-type uplift base, wherein the top of the uplift base is provided with an arc guide rack, and the reinforced solid passes through the arc guide rack and is wound and hung on the pillar-type uplift structural body in a U type. The stiffening pile with the structure can provide a higher uplift force, and after pit retaining engineering is finished, an anchorage body can be separated from the reinforced solid so as to recover the reinforced solid from soil conveniently, so that the requirements on recycling steel and saving energy can be met, and the reinforced solid is avoided being left in the stratum to form a barrier so as to achieve the purposes of environmental protection and engineering construction cost reduction.
Description
Technical field
The utility model relates to technical field of civil engineering, the soldier pile that particularly uses in the deep foundation pit support engineering.
Background technology
Deep foundation pit support engineering commonly used at present; The cement-soil stake of putting more energy into has higher uplift resistance, in some weak soil layers, has obtained application, but the steel strand that the reinforcement body adopts; After foundation pit enclosure structure completion effect, often stay, thereby limit the application of this kind support form in underground formation obstruction.For this reason, after the supporting and protection structure effect is accomplished, can from the soil body, the reinforcement body reclaimed out, be the difficult problem that engineering circle presses for solution.
From the technical standard of present anchor pole (rope) supporting and the recovery technology level of anchor pole (rope), these reclaiming type anchor bar support technologies all are suitable under certain conditions, as in rock and hardpan, could use in the soil layer more than groundwater table.From present applicable cases; The rate of recovery of anchor pole (rope) is generally not high; Generally can only reach 70%, and have some problems to some extent, as: the complex equipments that construction technology is numerous and diverse, labor strength is big, recovery is required is heavy, the rate of recovery is lower etc.
For the soft clay area base pit engineering; Because the water content of foundation soil is big; Water level is generally higher; Anchor pole is all located below the groundwater table, its native engineering properties is relatively poor, and anchor pole (rope) support technology is because its anchored force is not high, the Deformation control effect is bad and recovery technology is immature, causes this The Application of Technology to receive a lot of restrictions.Therefore; Characteristics to the weak soil deep foundation pit support; Through research to the bolt support mechanism and the method for designing of soft soil foundation pit; Exploitation has higher anchored force, good recoverable anchor rod (rope) support technology of Deformation control, has eliminated the underground obstacle of underground space development, and these will be the main trend of anchoring support technical development and application.
Because the construction period requires tight, general soldier pile just need carry out stretch-draw to reinforcement body wherein in short curing time, and the anchoring body that usually makes grouting body or rotary jet grouting form is damaged by tension and compression.We can say, in present 3～7 days curing time,, be difficult to obtain higher uplift resistance to satisfy the requirement of supporting because the compressive strength of the anchoring body that grouting or rotary jet grouting form is generally lower.Simultaneously, reinforcement body and anchoring body are broken away from, must control reinforcement body and anchoring body between adhesion stress, like this with the put more energy into uplift resistance of stake of influence.
For a kind of be the recoverable anchor rod of representative with the enlarged footing anchor pole; Be will not have bonding steel strand to wind on flat cuboid, this flat cuboid is made up of two blocks of plates, when getting into boring, lumps together; Open hinged joint being sent to foot of hole; Be in the shape of the letter V, rely on the folded acanthus of this V font and cement-soil to be bonded into one, frictional resistance is provided during for steel strand tension.Mouthful size of opening of the anchored force of this anchor pole and this V font plate has much relations, and is mouthful more little when opening, and then his anchored force that provides is just low more.It is very big being full of the resistance of in the hole of cement grout this folded acanthus being opened at one; The opening degree size of opening this folded acanthus is unmanageable; Thereby the anchored force of this recoverable anchor pole is uncertain; That is to say that the anchored force that this recoverable anchor pole provides is insecure.By designer's requirement, the maximum contact area 0.04m of this V font folded acanthus and cement-soil
2Calculate,, then need the intensity of cement-soil to reach 12.5N/mm if the limit anchoring force of 500KN will be provided
2,, can't reach this intensity in the curing time about 7 days for the cement soil body.If by possible soil cement intensity 3N/mm
2Consider that then this enlarged footing recoverable anchor pole can only provide the anchored force of 120KN.Obviously this can not satisfy conventional supporting requirement.Practice through us detects, the poor reliability of this enlarged footing recoverable anchor rod, and anchored force is lower, is difficult to satisfy the anchoring support requirement.
The utility model content
The utility model technical problem to be solved is, overcomes technical problem and fault of construction that existing anchor pole (rope) stake exists, and a kind of high anchored force that both had is provided, and can conveniently reclaim the stake of putting more energy into of reinforcement body again and use the resistance to plucking structure.This product can improve the anchored force of the stake of putting more energy into; Adhesion stress between control reinforcement body and the anchoring body after support action is accomplished, can reclaim the reinforcement body from the soil body; Anchoring body and reinforcement body are broken away from; Both realize steel recycling and low-carbon energy-saving requirement, and eliminated again and stayed obstruction in the stratum, reached the purpose that reduces construction costs.
For the technical scheme that addresses the above problem the utility model is such:
The resistance to plucking structure is used in a kind of stake of putting more energy into of recyclable reinforcement body, comprises a cylindricality resistance to plucking matrix, and the top of resistance to plucking matrix is provided with the arcuate guide frame, and the reinforcement body passes the arcuate guide frame and is the U type around hanging on this cylindricality resistance to plucking structure.
The top of resistance to plucking matrix is provided with one and wears the muscle dish; The arcuate guide frame is connected wearing on the muscle dish of top; The bottom of resistance to plucking matrix also is provided with one and wears the muscle dish, wears the muscle dish and is provided with and wears the muscle hole, and the reinforcement body is worn wearing in the muscle hole of muscle dish from resistance to plucking matrix bottom and penetrated; Pass resistance to plucking matrix top and wear the muscle dish after the arcuate guide frame is turned back, other that wear the muscle dish from resistance to plucking matrix bottom are worn the muscle hole and are passed.
The said muscle dish of wearing is a disk, and muscle dish diameter is worn the muscle dish greater than the bottom diameter is worn on resistance to plucking matrix top.
Said reinforcement body radical is n, wears the muscle hole and is 2n and all do not wearing on the muscle dish, and wherein n is the integer more than or equal to 1.
Said resistance to plucking matrix is an entity structure, and the cross section is a polygon, and polygonal limit number is more than or equal to three.
Said resistance to plucking matrix is a hollow-core construction, and the cross section is a polygon, and polygonal limit number is more than or equal to three.
Said resistance to plucking matrix is a hollow cage-shape structure, and the cross section is a polygon, and polygonal limit number is more than or equal to three.
Hollow cage-shape structure comprises three and above vertical support muscle, and that supports vertically that muscle connects bottom, resistance to plucking matrix top wears the muscle dish, vertically supports and is provided with a plurality of horizontal support muscle between the muscle.
Beneficial effect: the resistance to plucking structure of this cylindricality and the cement soil body or cement slurry are combined in one; Form the pile body of a higher-strength; The enhancing cage of this cylindricality is being taken on the effect of a reinforcing steel bar cage in pile body, when the reinforcement body was applied higher stretching force, the reinforcement body was directly delivered to stretching force and has on the pile body that strengthens cage; Because this pile body itself has higher intensity; Simultaneously bigger with the contact surface of the soil body, make this special pile body just local crush injury phenomenon can not occur, and enough anchored force can be provided.After support action is accomplished, this reinforcement body of being made by non-bending steel cable to be extracted out from pile body, it takes off the pull-off force of resistance much smaller than every steel strand.The enhancing cage of this cylindricality is a kind of nonmetals, though be deposited in undergroundly, when carrying out underground engineering construction, easily by construction machinery cutting or decompose, does not belong to underground obstacle.
Description of drawings
Specify the utility model below in conjunction with the accompanying drawing and the specific embodiment;
Fig. 1 is the structural representation of stake with the resistance to plucking structure of putting more energy into of 1 one kinds of recyclable reinforcement bodies of embodiment.
Fig. 1 a is for wearing the muscle structural representation.
Fig. 1 b is that another kind is worn the muscle structural representation.
Fig. 2 is the structural representation of stake with the resistance to plucking structure of putting more energy into of 2 one kinds of recyclable reinforcement bodies of embodiment.
Fig. 2 a is for wearing the muscle structural representation.
Fig. 3 is the structural representation of stake with the resistance to plucking structure of putting more energy into of 3 one kinds of recyclable reinforcement bodies of embodiment.
Fig. 3 a wears the muscle structural representation.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
The described resistance to plucking structure of present embodiment is mainly used in the stake of putting more energy into of recyclable reinforcement body.The stake of putting more energy into comprises the pile body that a rotary jet stirring pile body or cementation form; Its pile crown position comprises a resistance to plucking structure that is cylindricality; The reinforcement body is the U type turns back on the top that hangs over this cylindricality resistance to plucking structure, and described reinforcement body is one a whole non-bending steel cable, the convenient extraction out.
Referring to Fig. 1 and Fig. 1 a, the resistance to plucking structure comprises a cylindricality resistance to plucking matrix 1, and the top of resistance to plucking matrix 1 is provided with arcuate guide frame 2, and the reinforcement body passes the arcuate guide frame and is the U type around hanging on this cylindricality resistance to plucking structure.
The top of resistance to plucking matrix 1 is provided with one and wears muscle dish 3; Arcuate guide frame 2 is connected wearing on the muscle dish 3 of top; The bottom of resistance to plucking matrix 1 also is provided with one and wears muscle dish 4, wears muscle dish 3 and 4 and is provided with and wears muscle hole 31 and 41, and the reinforcement body is worn wearing in the muscle hole 41 of muscle dish from resistance to plucking matrix bottom and penetrated; Pass resistance to plucking matrix top and wear the muscle dish after arcuate guide frame 2 is turned back, other that wear the muscle dish from resistance to plucking matrix bottom are worn the muscle hole and are passed.Wear muscle dish 3 and be connected resistance to plucking matrix 1 through bolt with 4.
The said muscle dish of wearing is disk, square plate or polygon dish, and muscle dish 3 diameters are worn muscle dish 4 greater than the bottom diameter is worn on resistance to plucking matrix top.
Said reinforcement body radical is n, wears the muscle hole and is 2n and all do not wearing on the muscle dish, and wherein n is the integer more than or equal to 1.
Shown in Fig. 1 a, the reinforcement body is one, and the so corresponding muscle hole of wearing is two holes, is distributed on and wears on the muscle dish, and the reinforcement body is gone into from a hole, turns back through the arcuate guide frame, goes out from corresponding aperture.
Shown in Fig. 2 b, the reinforcement body is two, and the so corresponding muscle hole of wearing is four holes, is distributed on and wears on the muscle dish, and the reinforcement body is cross-shaped, and a reinforcement body is gone into from a hole, turns back through the arcuate guide frame, goes out from corresponding aperture; Another reinforcement body is gone into from another hole, turns back through the arcuate guide frame, goes out from another corresponding aperture.
Said resistance to plucking matrix is an entity structure, or hollow-core construction, and the cross section is a polygon, and polygon is a quadrangle.
Perhaps said resistance to plucking matrix is a hollow cage-shape structure, and the cross section is a polygon, and polygon is a quadrangle.
Hollow cage-shape structure comprises four vertical support muscle 5, and that supports vertically that muscle 5 connects bottoms, resistance to plucking matrix top wears muscle dish 3 and 4, vertically supports and is provided with a plurality of horizontal support muscle 6 between the muscle 5.
Described hollow cage-shape structure is to be processed by nonmetals, like high-strength engineering plastics, glass-reinforced plastic material etc.
After forming this pile body, adopt special drilling tool, along this pile body hollow cage-shape structure and reinforcement body be sent in the pile body of firm formation and go, insert put in place after, on one side pumpback drilling tool, rotary jet grouting in pile body on one side.
The pile body of described boring cementation body or rotary jet stirring is to be mixed by cement grout, Admixture or the soil body, and diameter can change, and general pile body external diameter is more than the 100mm, and he forms through cylinder or well cementing that rotary jet stirring forms.The reinforcement body is no bonding steel strand.
The pilework of putting more energy in the present embodiment; Be that substep is executed the do completion, both can in comparatively hard soil layer, form, 500KN can be provided above anchored force; Also can in the soil layer of weakness such as mucky soil, quicksand and slity soil, form; In mucky soil, can produce the anchored force more than the 300KN, after accomplishing support action, can the reinforcement body be reclaimed fully.
Removal process is following: the first step, the reinforcement body of tensioning fixation is removed ground tackle at the ground tackle place with special tool, the reinforcement body is exposed at the supporting and protection structure outside and is paired reinforcement body; Second the step, clamp the wherein termination of a reinforcement body with special fixture, anchor clamps are connected with small-sized hollow jack; The 3rd step started oil pump, jack piston drive that the reinforcement body overcomes and sleeve pipe between frictional resistance; This frictional resistance is relevant with the length of reinforcement body, the general 20 meters long stakes of putting more energy into, and its reinforcement body is about 42m; Frictional resistance is about 80KN, and after starting disengaging, this frictional resistance drops to 40KN.The 4th step after the reinforcement body is twitched, was fixed on an end of reinforcement body on the steel rope of hoist engine, started hoist engine, extracted the reinforcement body at a slow speed out.Because adopt the reinforcement body that does not have bonding, the frictional force between reinforcement body and its sleeve pipe is constant.Extract the anti-disconnected power (250KN) of the pulling force of reinforcement body out, therefore, can not occur the phenomenon of being broken when reclaiming the reinforcement body much smaller than every reinforcement body.And the end plate that is arranged on the cylindricality halter of end of putting more energy into has special arc guide groove, thereby makes the recovery resistance less.
Embodiment 2, referring to Fig. 2 and Fig. 2 a; Said resistance to plucking matrix is a hollow cage-shape structure, and the cross section is a polygon, and polygon is an equilateral triangle.
Hollow cage-shape structure comprises three vertical support muscle 5, and that supports vertically that muscle 5 connects bottoms, resistance to plucking matrix top wears muscle dish 3 and 4, vertically supports and is provided with a plurality of horizontal support muscle 6 between the muscle 5.
All the other are with embodiment 1.
Hollow cage-shape structure comprises that the six roots of sensation vertically supports muscle 5, and that supports vertically that muscle 5 connects bottoms, resistance to plucking matrix top wears muscle dish 3 and 4, vertically supports and is provided with a plurality of horizontal support muscle 6 between the muscle 5.
All the other are with embodiment 1.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the manual that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (8)
1. the resistance to plucking structure is used in the stake of putting more energy into of a recyclable reinforcement body, comprises a cylindricality resistance to plucking matrix, it is characterized in that the top of resistance to plucking matrix is provided with the arcuate guide frame, and the reinforcement body passes the arcuate guide frame and is the U type around hanging on this cylindricality resistance to plucking structure.
2. the resistance to plucking structure is used in the stake of putting more energy into of a kind of recyclable reinforcement body according to claim 1, it is characterized in that the top of resistance to plucking matrix is provided with one and wears the muscle dish; The arcuate guide frame is connected wearing on the muscle dish of top; The bottom of resistance to plucking matrix also is provided with one and wears the muscle dish, wears the muscle dish and is provided with and wears the muscle hole, and the reinforcement body is worn wearing in the muscle hole of muscle dish from resistance to plucking matrix bottom and penetrated; Pass resistance to plucking matrix top and wear the muscle dish after the arcuate guide frame is turned back, other that wear the muscle dish from resistance to plucking matrix bottom are worn the muscle hole and are passed.
3. the resistance to plucking structure is used in the stake of putting more energy into of a kind of recyclable reinforcement body according to claim 2, it is characterized in that resistance to plucking matrix one end is worn muscle dish diameter is worn the muscle dish more than or equal to the other end diameter.
4. the resistance to plucking structure is used in the stake of putting more energy into of a kind of recyclable reinforcement body according to claim 3, it is characterized in that said reinforcement body radical is n, and wherein n is the integer more than or equal to 1.
5. use the resistance to plucking structure according to the stake of putting more energy into of claim 1 or 2 or 3 or 4 described a kind of recyclable reinforcement bodies, it is characterized in that said resistance to plucking matrix is an entity structure, the cross section is a polygon, and polygonal limit number is more than or equal to three.
6. use the resistance to plucking structure according to the stake of putting more energy into of claim 1 or 2 or 3 or 4 described a kind of recyclable reinforcement bodies, it is characterized in that said resistance to plucking matrix is a hollow-core construction, the cross section is a polygon, and polygonal limit number is more than or equal to three.
7. use the resistance to plucking structure according to the stake of putting more energy into of claim 1 or 2 or 3 or 4 described a kind of recyclable reinforcement bodies, it is characterized in that said resistance to plucking matrix is a hollow cage-shape structure, the cross section is a polygon, and polygonal limit number is more than or equal to three.
8. use the resistance to plucking structure according to the stake of putting more energy into of claim 1 or 2 or 3 or 4 described a kind of recyclable reinforcement bodies; It is characterized in that; Hollow cage-shape structure; Comprise three and above vertical support muscle, that supports vertically that muscle connects bottom, resistance to plucking matrix top wears the muscle dish, vertically supports and is provided with a plurality of horizontal support muscle between the muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120499712 CN202337980U (en) | 2011-12-05 | 2011-12-05 | Uplift structural body capable of recovering stiffening pile of reinforced solid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120499712 CN202337980U (en) | 2011-12-05 | 2011-12-05 | Uplift structural body capable of recovering stiffening pile of reinforced solid |
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| Publication Number | Publication Date |
|---|---|
| CN202337980U true CN202337980U (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120499712 Expired - Lifetime CN202337980U (en) | 2011-12-05 | 2011-12-05 | Uplift structural body capable of recovering stiffening pile of reinforced solid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720190A (en) * | 2012-07-19 | 2012-10-10 | 上海强劲地基工程股份有限公司 | Stiffening pile used for recyclable reinforcement bodies in mealy sand layers |
-
2011
- 2011-12-05 CN CN 201120499712 patent/CN202337980U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720190A (en) * | 2012-07-19 | 2012-10-10 | 上海强劲地基工程股份有限公司 | Stiffening pile used for recyclable reinforcement bodies in mealy sand layers |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
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| CX01 | Expiry of patent term |