CN107059882A - Arch anchor net and Anchor-Pile Retaining Structure structure - Google Patents
Arch anchor net and Anchor-Pile Retaining Structure structure Download PDFInfo
- Publication number
- CN107059882A CN107059882A CN201710249474.3A CN201710249474A CN107059882A CN 107059882 A CN107059882 A CN 107059882A CN 201710249474 A CN201710249474 A CN 201710249474A CN 107059882 A CN107059882 A CN 107059882A
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- Prior art keywords
- anchor
- pile
- baffle plate
- soil
- arch
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- Pending
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- 239000002689 soil Substances 0.000 claims abstract description 37
- 210000001624 Hip Anatomy 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000002035 prolonged Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002787 reinforcement Effects 0.000 abstract description 5
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- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The invention discloses a kind of arch anchor net and Anchor-Pile Retaining Structure structure, it is arranged on foundation pit side-wall, the structure includes vertically being fixed on several support piles at bottom in foundation ditch, the waist rail being connected between the support pile described in adjacent at least two and the arched baffle plate being connected between the support pile described in adjacent two, being extended through described arched baffle plate into the foundation pit side-wall soil body has several soil nailings, and being extended through described waist rail and described support pile into the foundation pit side-wall soil body has several prestressed anchors.The beneficial effect of the structure：(a) it is linked to be entirety by setting up arched baffle plate and support pile, adds lateral rigidity, reduces support pile deformation and quantity of reinforcement；(b) soil nailing is set up in arched baffle plate, support pile stress is reduced, so as to reduce rock-bolt length；(c) arched baffle plate and earth-retaining and water retaining function, change the deficiency that traditional pile-anchor supporting system is present.
Description
Technical field
The present invention relates to foundation pit supporting system, more particularly to a kind of arch anchor net and Anchor-Pile Retaining Structure structure.
Background technology
Foundation ditch refer in order to build the basis of building (including structures) and basement, embedded municipal works pipeline and
The space for the below ground that the exploitation underground space (such as underground station, market etc.) is excavated.Pattern foundation pit supporting structure refers to under protecting field
The safety of structure and foundation ditch surrounding enviroment, the supporting and retaining system that foundation pit side-wall and surrounding enviroment are taken, reinforce and protection etc. engineering arrange
Apply.
The fundamental type of the supporting construction of base pit engineering has：Slope is excavated and simple protection, cantilever supporting structure, cement
Native piling wall supporting construction, Internal-shoring Supporting structure, piled anchor formula supporting construction, soil nailed wall retaining structure, contrary sequence method and other branch
Protection structure.In these foundation pit supporting constructions, anchored pile supporting be through frequently with a kind of supporting construction, and held
It is continuous to be widely applied.
Anchored pile supporting from deposited reinforced concrete pile and level to or oblique prestressed anchor constitute, pile-anchor retaining
Structure can be divided into single fulcrum pile_anchor retaining structure and many fulcrum piled anchor branch according to cutting depth and foundation ditch surrounding environment of foundation ditch etc.
Protection structure.Prestressed anchor is made up of free segment and anchoring section, and the prestressing force that anchor pole applies is by the anchor rod anchored section of anchoring provided
Power undertakes.
In Excavation Process, due to the effect of soil mass of foundation pit pressure, support pile pile body is in by curved state, and anchor pole is in
Tension state.Because anchor pole provides support force to pile body, pile body internal force distribution under horizontal earth pressure effect is set to tend to be uniform,
It is reasonable when pile body stress is compared with cantilever position.The anchor rod prestress being previously applied, makes anchored pile supporting in Excavation Process,
Crater wall horizontal displacement is controlled effectively, stability against overturning is greatly improved, and the building-in depth of pile body is obtained significantly
Shorten, difficulty of construction and construction investment are significantly reduced.Therefore anchored pile supporting is commonly used as in engineering practice
Supporting construction form, be widely used in support engineering.
But there are following two big shortcomings in existing technology：(1) campshed lateral rigidity is small, and under soil pressure effect, span centre is attached
Larger moment of flexure would generally closely be produced, it may occur that than larger flexural deformation so that the diameter and Reinforcement Design of bored concrete pile are larger；
(2) when foundation depth is larger or during poor soil condition, the prestressing force that anchor pole is provided is generally higher, now needs larger anchoring
Length, and foundation ditch surrounding environment is poor under normal circumstances, city geological environment is more complicated, and level of ground water is higher, and hole is outer
Workable space is smaller, and these just bring very big limitation to the application of anchored pile supporting, also to anchored pile supporting
Design and construction bring extreme difficulties.
The content of the invention
The embodiment of the present invention provides a kind of arch anchor net and Anchor-Pile Retaining Structure structure, and intensity is high, and has earth-retaining and gear concurrently
The function of water, easily implements.
Arch anchor net and Anchor-Pile Retaining Structure structure, are arranged on foundation pit side-wall, and the structure includes vertically being fixed on
Several support piles at bottom, the waist rail being connected between the support pile described in adjacent at least two and it is connected to adjacent in foundation ditch
Two described in support pile between arched baffle plate, through described arched baffle plate into the foundation pit side-wall soil body be extended have
Several soil nailings, being extended through described waist rail and described support pile into the foundation pit side-wall soil body has several prestressing force
Anchor pole.
Preferably, described arched baffle plate is in arc-shaped arch.
Preferably, described waist rail, described soil nailing and described prestressed anchor are steel structure.
Preferably, described support pile and described arched baffle plate are concrete structure.
Preferably, described prestressed anchor tilts down setting.
Preferably, described waist rail is multiple including what is be arranged in parallel up and down.
The beneficial effect of the supporting construction of the present invention：(a) it is linked to be entirety by setting up arched baffle plate and support pile, adds
Lateral rigidity, reduces support pile deformation and quantity of reinforcement；(b) soil nailing is set up in arched baffle plate, support pile stress is reduced, so that
Reduce rock-bolt length；(c) arched baffle plate and earth-retaining and water retaining function, change the deficiency that traditional pile-anchor supporting system is present.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that (soil body is saturating for the structural representation of arch anchor net provided in an embodiment of the present invention and Anchor-Pile Retaining Structure structure
Express meaning)；
Fig. 2 is that (soil body is transparent to be shown for the top view of arch anchor net provided in an embodiment of the present invention and Anchor-Pile Retaining Structure structure
Meaning)；
Fig. 3 is arch anchor net provided in an embodiment of the present invention and the force diagram one of Anchor-Pile Retaining Structure structure；
Fig. 4 is arch anchor net provided in an embodiment of the present invention and the force diagram two of Anchor-Pile Retaining Structure structure.
Description of reference numerals：
1- support piles, 2- waist rails, 3- arched baffle plates, 4- soil nailings, 5- prestressed anchors；
The A- soil bodys are to the active force of supporting construction, the pulling force of B- prestressed anchors；The pulling force of C- soil nailings.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figures 1 and 2, a kind of arch anchor net and Anchor-Pile Retaining Structure structure, are arranged on foundation pit side-wall, the structure bag
Include vertically be fixed on several support piles 1 at bottom in foundation ditch, be connected to support pile 1 described in adjacent at least two it
Between waist rail 2 and the arched baffle plate 3 that is connected between the support pile 1 described in adjacent two, through described arched baffle plate 3 to
Being extended in the foundation pit side-wall soil body has several soil nailings 4, through described waist rail 2 and described support pile 1 to foundation pit side-wall
Being extended in the soil body has several prestressed anchors 5, and described arched baffle plate 3 is in arc-shaped arch, wherein, prestressed anchor
5 include the free segment and the anchoring section that is connected with the free segment close to support pile 1, described waist rail 2, described soil nailing 4 and
Described prestressed anchor 5 is steel structure, and described support pile 1 and described arched baffle plate 3 are concrete structure, institute
The prestressed anchor 5 stated tilts down setting, and described waist rail 2 is multiple including what is be arranged in parallel up and down.
As shown in Figure 3 and Figure 4, the soil body of foundation pit side-wall to the active force A of whole supporting construction by prestressed anchor 5
Pulling force B horizontal direction component and the pulling force C of soil nailing 4 horizontal direction component is balanced, and then ensures that total is not caved in,
Ensure construction safety.
In the supporting construction：(1) support pile 1 plays retaining wall, bears the horizontal pressure force that the foundation pit side-wall soil body is transmitted；
(2) formation of arched baffle plate 3 space stiffness, entirety is formed with support pile 1, reduces support system horizontal distortion；(3) prestressed anchor
5 points are free segment and anchoring section, play a part of to socket support pile 1, while reducing stake horizontal distortion；(4) soil nailing 4 is anchored at the soil body
In, serve and socket arched baffle plate 3；(5) waist rail 2 fixes prestressed anchor 5, while forming entirety with support pile 1, plays collar tie beam
Effect.
The supporting construction of the present invention is tested through lab and field, is as a result shown：(a) set arch anchor net can between stake
To be collectively forming continuous soil-baffling structure with pile body, the native displacement of limitation stake is played a part of in rigidity of structure increase more than 30%；Stake
It is more or less the same afterwards with arch bar soil pressure force value, and distribution form is substantially similar, soil of the maximum than being not provided with during arch anchor net
Pressure maximum value is small, illustrates that arch anchor net plays corrective action to soil pressure, the deformation of such stake and quantity of reinforcement ratio do not set arch
The stake of shape baffle plate is small；(b) soil nailing is set up in arched baffle plate, 20%-30% soil pressures has been shared, has reduced and act on support pile
Upper pressure, so as to reduce rock-bolt length；(c) integral structural system of support pile very directly perceived and arched baffle plate formation, with compared with
Good earth-retaining and water retaining function, good operating condition is provided to construction foundation working.
To sum up, the supporting construction of the design can reach following technique effect：(a) by setting up arched baffle plate and support pile
It is linked to be entirety, adds lateral rigidity, reduces support pile deformation and quantity of reinforcement；(b) soil nailing is set up in arched baffle plate, is reduced
Support pile stress, so as to reduce rock-bolt length；(c) arched baffle plate and earth-retaining and water retaining function, change traditional pile-anchor retaining
The deficiency that system is present.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (6)
1. arch anchor net and Anchor-Pile Retaining Structure structure, are arranged on foundation pit side-wall, it is characterised in that the structure is included along vertical side
To being fixed on several support piles at bottom in foundation ditch, the waist rail and the company that are connected between the support pile described in adjacent at least two
The arched baffle plate between the support pile described in adjacent two is connected on, is prolonged through described arched baffle plate into the foundation pit side-wall soil body
Stretch and be provided with several soil nailings, being extended through described waist rail and described support pile into the foundation pit side-wall soil body has some
Individual prestressed anchor.
2. arch anchor net as claimed in claim 1 and Anchor-Pile Retaining Structure structure, it is characterised in that described arched baffle plate is in
Arc-shaped arch.
3. arch anchor net as claimed in claim 1 and Anchor-Pile Retaining Structure structure, it is characterised in that described waist rail, described
Soil nailing and described prestressed anchor be steel structure.
4. arch anchor net as claimed in claim 1 and Anchor-Pile Retaining Structure structure, it is characterised in that described support pile and institute
The arched baffle plate stated is concrete structure.
5. arch anchor net as claimed in claim 1 and Anchor-Pile Retaining Structure structure, it is characterised in that described prestressed anchor
Tilt down setting.
6. arch anchor net as claimed in claim 1 and Anchor-Pile Retaining Structure structure, it is characterised in that described waist rail includes upper
Under be arranged in parallel it is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249474.3A CN107059882A (en) | 2017-04-17 | 2017-04-17 | Arch anchor net and Anchor-Pile Retaining Structure structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249474.3A CN107059882A (en) | 2017-04-17 | 2017-04-17 | Arch anchor net and Anchor-Pile Retaining Structure structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107059882A true CN107059882A (en) | 2017-08-18 |
Family
ID=59601062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710249474.3A Pending CN107059882A (en) | 2017-04-17 | 2017-04-17 | Arch anchor net and Anchor-Pile Retaining Structure structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107059882A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222017A (en) * | 2018-02-02 | 2018-06-29 | 江苏工程职业技术学院 | A kind of H profile steel anchor pole composite pile-prefabricated board wall base pit enclosure construction method |
| CN109235447A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit support device |
| CN110055974A (en) * | 2019-04-24 | 2019-07-26 | 兰州理工大学 | A kind of recyclable miniature steel pipe pile soil nailing combined support structure and its recovery method |
| CN110206042A (en) * | 2019-06-18 | 2019-09-06 | 深圳市中天基础勘测设计有限公司 | A kind of foundation pit of network column supporting |
| CN109505229B (en) * | 2018-12-13 | 2021-02-23 | 中交一公局桥隧工程有限公司 | Stress balance and vibration-damping disaster-prevention high pier structure for high and steep side slope of highway and construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215153A1 (en) * | 1982-04-23 | 1983-11-03 | Beratende Ingenieure Vbi Frank | Retaining structure and method of producing a retaining structure |
| CN204825923U (en) * | 2015-07-29 | 2015-12-02 | 中国航天建设集团有限公司 | Relay formula underground structure |
-
2017
- 2017-04-17 CN CN201710249474.3A patent/CN107059882A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215153A1 (en) * | 1982-04-23 | 1983-11-03 | Beratende Ingenieure Vbi Frank | Retaining structure and method of producing a retaining structure |
| CN204825923U (en) * | 2015-07-29 | 2015-12-02 | 中国航天建设集团有限公司 | Relay formula underground structure |
Non-Patent Citations (1)
| Title |
|---|
| 谢强等: "《岩体力学与工程》", 31 July 2011, 西南交通大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222017A (en) * | 2018-02-02 | 2018-06-29 | 江苏工程职业技术学院 | A kind of H profile steel anchor pole composite pile-prefabricated board wall base pit enclosure construction method |
| CN108222017B (en) * | 2018-02-02 | 2019-11-26 | 江苏工程职业技术学院 | A kind of H profile steel anchor pole composite pile-prefabricated board wall base pit enclosure construction method |
| CN109235447A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit support device |
| CN109505229B (en) * | 2018-12-13 | 2021-02-23 | 中交一公局桥隧工程有限公司 | Stress balance and vibration-damping disaster-prevention high pier structure for high and steep side slope of highway and construction method |
| CN110055974A (en) * | 2019-04-24 | 2019-07-26 | 兰州理工大学 | A kind of recyclable miniature steel pipe pile soil nailing combined support structure and its recovery method |
| CN110206042A (en) * | 2019-06-18 | 2019-09-06 | 深圳市中天基础勘测设计有限公司 | A kind of foundation pit of network column supporting |
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Application publication date: 20170818 |