CN202610807U - Horizontal drawing and inclined anchoring type supporting structure for foundation pits - Google Patents

Horizontal drawing and inclined anchoring type supporting structure for foundation pits Download PDF

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Publication number
CN202610807U
CN202610807U CN 201220278735 CN201220278735U CN202610807U CN 202610807 U CN202610807 U CN 202610807U CN 201220278735 CN201220278735 CN 201220278735 CN 201220278735 U CN201220278735 U CN 201220278735U CN 202610807 U CN202610807 U CN 202610807U
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CN
China
Prior art keywords
stake
putting
energy
anchor
reinforcement body
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201220278735
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Chinese (zh)
Inventor
刘全林
宋伟民
刘斐然
项向荣
范君宇
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Priority to CN 201220278735 priority Critical patent/CN202610807U/en
Application granted granted Critical
Publication of CN202610807U publication Critical patent/CN202610807U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a horizontal drawing and inclined anchoring type supporting structure for foundation pits. The supporting structure is characterized in that an anchor rope which horizontally extends towards outside of a foundation pit is arranged at the top of the foundation pit, one end of the anchor rope is connected with a foundation pit top maintenance structure, and the other end of the anchor rope is connected with a stiffening pile which stretches into a soil body in an inclined direction. A stiffening pile support form with the anchor rope can bypass anchor rod construction obstacles in foundation pit supporting, and the anchoring force of the anchor rod is prolonged, so that the foundation pit can still obtain good anchoring supports.

Description

The oblique anchor formula of a kind of horizontal drawing foundation pit supporting construction
Technical field
The utility model relates to technical field of civil engineering, the uplift pile of particularly using in quick reinforcing of deep foundation pit support and ground and the anchoring engineering.
Background technology
The piled anchor structure of deep foundation ditch active support employing at present and building anti-floating and the stake that resists inclination mainly contain soil bolt.Soil bolt is arranged on the supporting and protection structure side; General well cementing and the rotary jet grouting of adopting forms cement paste anchoring body or cement-soil anchoring body and inserts dowel; In order to make anchor bar body in short curing time, higher uplift resistance can be provided, usually adopt accelerating admixture or early stage agent to improve the intensity of the cement soil body or cement slurry, or adopt chemical gelling agent; But these all increase more construction cost, and the amplitude that improves is less.
The load transfer mechanism of soil bolt is: the inner load transfer mechanism of the anchor pole that bonds is entirely mainly divided two parts: steel strand are stressed to pass to slurry through the contact surface with slurry; Slurry passes to ground through the contact surface with ground; These two transmittance process forms all are the shearing forms, so follow two kinds of mode of failure simultaneously.A kind of promptly because the adhesion stress at anchor pole sliding surface place is not enough; When reaching maximum value, the shearing force at sliding surface place between anchor rod body and the grouting body relative slip will take place; Shearing force is transmitted to the anchoring section far-end with progressive mode; Along with the increase of anchor pole bearing load value, shift combination stress along anchorage length with the mode that is similar to friction pile and finally cause destroying owing to anchor pole can not bear its value, be called injecting cement paste and body of rod interfacial failure.Ultimate tension can not be born for the frictional force of mortar in a kind of in addition because anchoring section stratum, and the phenomenon that together is pulled out with injecting cement paste will take place anchor pole, is called the interfacial failure of the injecting cement paste and the soil body.
In special geographical position; Because obstacle or other construction requirements, the sidewall of foundation ditch can't carry out anchor pole or the pile driving construction of putting more energy into, as having the historical relic's protection building on the foundation ditch limit; The destruction of can not constructing; Perhaps very loose, the water content of the soil property on the foundation ditch limit very can not form the stake of putting more energy into greatly, has tunnel or Other Engineering not to construct again or on the foundation ditch limit, and reason such as river course is arranged on the foundation ditch limit; And foundation ditch must be taked supporting measure, solves the difficult problem in this type of pattern foundation pit supporting structure so press for a kind of mode of utility model.
The utility model content
The utility model technical problem to be solved is; Overcome technical problem and fault of construction that existing anchor pile exists; A kind of stake of putting more energy into that has the ground anchor cable is provided; This stake of putting more energy into has one section horizontally extending anchor cable, can the anchored force of the stake of putting more energy into be delivered on the foundation pit side-wall supporting and protection structure through anchor cable.
For the technical scheme that addresses the above problem the utility model is such:
Have the stake of putting more energy into of ground anchor cable, it is characterized in that, the foundation ditch top is provided with one to the horizontally extending anchor cable in the foundation ditch outside, and anchor cable one end connects foundation ditch top enclosed structure, and the other end of anchor cable connects an oblique stake of stretching in the soil body of putting more energy into.
The said stake of putting more energy into comprises a cement soil pile, has the reinforcement body in the pile body, and the reinforcement body is connected with the resistance to plucking structure, and said anchor cable and said reinforcement body interconnect.
Said resistance to plucking structure is a form anchor, and anchor ingot plate is processed by metal or high-strength nonmetals.
Be provided with an anchor ingot plate in the anchoring section of reinforcement body, this form anchor is arranged on the anchoring section front end of reinforcement body.
Be provided with plural anchor ingot plate in the anchoring section of reinforcement body, one of them form anchor is arranged on the anchoring section front end of reinforcement body.
The cement soil pile of stake of putting more energy into is the pile body that the cement soil pile that forms of rotary jet stirring or cement paste perfusion form.
It is characterized in that said reinforcement body is non-bending steel cable, bonding steel strand, the part materials such as steel strand, wire rope, reinforcing bar, steel pipe, section bar that bond.
Put more energy into the stake cement soil pile diameter along its length be identical or different.
Anchor ingot plate and reinforcement body adopt that extruded sleeve is connected, welding or bolt connect.
Said resistance to plucking structure front end has one and is used for the deep-slotted chip breaker that the revolution of reinforcement body is walked around, and the resistance to plucking structure is arranged on the cement soil pile front end, and the reinforcement body is walked around the stake of putting more energy into that the resistance to plucking structure forms recyclable reinforcement body.
The described support form of putting more energy into that has anchor cable of the utility model can be walked around anchor bolt construction obstacle in the pattern foundation pit supporting structure, and the anchored force prolongation with anchor pole makes foundation ditch still can obtain anchoring support preferably, and it is simple and convenient to construct.
Description of drawings
Specify the utility model below in conjunction with the accompanying drawing and the specific embodiment;
The described supporting and protection structure sketch map of putting more energy into that has anchor cable of Fig. 1 the utility model.
Fig. 2 is the structural representation that the described stake of putting more energy into of the utility model has an anchor ingot plate
Fig. 3 is the structural representation that the described stake of putting more energy into of the utility model has two anchor ingot plates.
Fig. 4 is the structural representation that the described stake of putting more energy into of the utility model has three anchor ingot plates.
Fig. 5 is the structural representation that the described stake of putting more energy into of the utility model has different anchor ingot plates.
Fig. 6 is the pilework sketch map of putting more energy into of the described recyclable reinforcement body of the utility model.
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.
Referring to Fig. 1, vertical enclosed structure 3 tops of foundation pit side-wall are provided with an anchor cable 2, anchor cable 2 horizontal positioned; Anchor cable 2 on the ground, it is fixed that the length of anchor cable 2 is come according to actual conditions, if the outside obstacle of foundation pit side-wall is very little; The then corresponding adjustment of the length of anchor cable 2; The feasible stake 1 of putting more energy into can get final product by cut-through, and the stake 1 of putting more energy into is connected the other end of anchor cable 2, puts more energy into stake 1 from the oblique insertion down in the ground soil body; Stake 1 the pulling force of putting more energy into is delivered on the foundation pit side-wall through anchor cable 2, thereby plays the foundation pit side-wall support action.
The vertical enclosed structure of foundation ditch 3 tops are provided with a capping beam 4, and anchor cable 2 one ends are connected on the capping beam 4, are provided with one at stake 1 top of putting more energy into and press beam 5, and anchor cable 2 other ends connect presses beam 5 and connect the reinforcement body in the stake 1 of putting more energy into through pressure beam 5 backs.
Referring to Fig. 2,3, the cement soil pile of the stake 1 of putting more energy into is the pile body that rotary jet stirring pile body or cementation form, and cement soil pile forms with well cementing, and the rotary jet stirring pile body utilizes jet grouting and stirring drill tool to execute work.
Put more energy into reinforcement body 14 and one to two anchor ingot plate 12 and anchor ingot plate 13 in the stake link together through extruded sleeve 11.
Referring to Fig. 4, the reinforcement body 14 in the stake of putting more energy into and three anchor ingot plates 12 and anchor ingot plate 13 link together through extruded sleeve 11.
Referring to Fig. 5, the reinforcement body 14 in the stake of putting more energy into respectively with one or more anchor ingot plate 13, link together through extruded sleeve 11.
Behind the construction cement soil pile,, adopt special drilling tool, be sent in the pile body along the center of this pile body and go reinforcement body 14 and anchor ingot plate 12 and anchor ingot plate 13, insert put in place after, on one side pumpback drilling tool, rotary jet grouting in pile body on one side.
Reinforcement body 14 is one or more steel strand, reinforcing bar, steel pipe, reinforcing bar.
Anchor ingot plate 12 is to be processed from strand by steel plate with anchor ingot plate 13, is hollow disc shape or hollow polygon, and the circular hole that evenly distributes is onboard hung from every hole and worn reinforcement body 14.The anchor ingot plate of middle perforate is for installing and locating and displaces certain mud.
Referring to Fig. 6; The stake of putting more energy into is the stake of putting more energy into of recyclable reinforcement body; Comprise the cement soil pile that a rotary jet stirring pile body or cementation form; Its pile body head position comprises a cage 15 that is cylindricality, and reinforcement body 14 is the U type on the top that hangs over this cylindricality cage and turn back and pass from the other end, and described reinforcement body 14 is a whole non-bending steel cable.
The utility model is compared with traditional anchor pole and is reduced to go along with sb. to guard him distortion and surrounding soil sedimentation.Tradition bracing of foundation pit anchor pole, anchor pole increases and goes along with sb. to guard him active earth pressure vertical space enclosing structure active earth pressure zone soil body drag interaction, should the zone soil deformation thereby increase, increase space enclosing structure distortion and surface settlement on every side.And be delivered to space enclosing structure fulcrum power in the soil body beyond the active earth pressure zone through jump stay, effectively reduce foundation ditch displacement and surrounding soil sedimentation.
Bear active earth pressure with anchor pole in the utility model structure, stress system is clear and definite.Tradition piled anchor space enclosing structure; Active earth pressure stress field and anchor pole side friction stress field are overlapping, make this regional stress field complicated, and the oblique anchor structure of level; Active earth pressure is passed to through vertical space enclosing structure encloses purlin, encloses purlin and is passed to oblique anchor and forms equilibrium system through jump stay.This system computing is simple, and is stressed clear and definite.
The oblique anchor of the utility model need not free section, can effectively reduce rock-bolt length.This oblique anchor so need not free section, can be realized anchor pole full length fastening section away from the foundation ditch slip-crack surface, has given full play to supporting capacity, reduces rock-bolt length.
The simple structure of the utility model is flexible, and applicability is strong.This system can be through regulating jump stay length and oblique anchor inclination angle, and according to the site condition flexible arrangement, applicability is strong.
The vertical space enclosing structure of the structure of the utility model and tiltedly draw anchor to construct simultaneously simultaneously can the laying level be drawn anchor, effectively practices thrift the duration.
The oblique anchor of the system of the utility model does not have free section, effectively reduces rock-bolt length, and jump stay can recycling, so economize on resources, reduces cost.
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 (10)

1. the oblique anchor formula of a horizontal drawing foundation pit supporting construction is characterized in that, the foundation ditch top is provided with one to the foundation ditch horizontally extending lacing wire in the outside, and lacing wire one end connects foundation ditch top space enclosing structure, and the other end of lacing wire connects the oblique stake of stretching in the soil body of putting more energy into.
2. the stake of putting more energy into that has the ground anchor cable according to claim 1 is characterized in that, the said stake of putting more energy into comprises a cement soil pile, has the reinforcement body in the pile body, and the reinforcement body is connected with the resistance to plucking structure, and said anchor cable and said reinforcement body interconnect.
3. the stake of putting more energy into that has the ground anchor cable according to claim 2 is characterized in that said resistance to plucking structure is a form anchor, and anchor ingot plate is processed by metal or high-strength nonmetals.
4. the stake of putting more energy into that has the ground anchor cable according to claim 3 is characterized in that, is provided with an anchor ingot plate in the anchoring section of reinforcement body, and this form anchor is arranged on the anchoring section front end of reinforcement body.
5. the stake of putting more energy into that has the ground anchor cable according to claim 3 is characterized in that, is provided with plural anchor ingot plate in the anchoring section of reinforcement body, and one of them form anchor is arranged on the anchoring section front end of reinforcement body.
6. the stake of putting more energy into that has the ground anchor cable according to claim 2 is characterized in that, the cement soil pile of the stake of putting more energy into is that cement soil pile or the cement paste that rotary jet stirring forms pours into the pile body that forms.
7. the stake of putting more energy into that has the ground anchor cable according to claim 2 is characterized in that, it is characterized in that, said reinforcement body is non-bending steel cable, bonding steel strand, the part materials such as steel strand, wire rope, reinforcing bar, steel pipe, section bar that bond.
8. the stake of putting more energy into that has the ground anchor cable according to claim 2 is characterized in that, the cement soil pile diameter along its length of the stake of putting more energy into is identical or different.
9. the stake of putting more energy into that has the ground anchor cable according to claim 3 is characterized in that, anchor ingot plate and reinforcement body adopt that extruded sleeve is connected, welding or bolt connect.
10. the stake of putting more energy into that has the ground anchor cable according to claim 2; It is characterized in that; Said resistance to plucking structure front end has one and is used for the deep-slotted chip breaker that the revolution of reinforcement body is walked around; The resistance to plucking structure is arranged on the cement soil pile front end, and the reinforcement body is walked around the stake of putting more energy into that the resistance to plucking structure forms recyclable reinforcement body.
CN 201220278735 2012-06-13 2012-06-13 Horizontal drawing and inclined anchoring type supporting structure for foundation pits Expired - Lifetime CN202610807U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220278735 CN202610807U (en) 2012-06-13 2012-06-13 Horizontal drawing and inclined anchoring type supporting structure for foundation pits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220278735 CN202610807U (en) 2012-06-13 2012-06-13 Horizontal drawing and inclined anchoring type supporting structure for foundation pits

Publications (1)

Publication Number Publication Date
CN202610807U true CN202610807U (en) 2012-12-19

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CN 201220278735 Expired - Lifetime CN202610807U (en) 2012-06-13 2012-06-13 Horizontal drawing and inclined anchoring type supporting structure for foundation pits

Country Status (1)

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CN (1) CN202610807U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625377A (en) * 2018-06-11 2018-10-09 云南建投基础工程有限责任公司 A kind of foundation pit diagonal brace pile construction method and its auxiliary tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625377A (en) * 2018-06-11 2018-10-09 云南建投基础工程有限责任公司 A kind of foundation pit diagonal brace pile construction method and its auxiliary tool

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Granted publication date: 20121219