CN107268596A - Star basis and its construction method - Google Patents
Star basis and its construction method Download PDFInfo
- Publication number
- CN107268596A CN107268596A CN201610215878.6A CN201610215878A CN107268596A CN 107268596 A CN107268596 A CN 107268596A CN 201610215878 A CN201610215878 A CN 201610215878A CN 107268596 A CN107268596 A CN 107268596A
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- Prior art keywords
- beard
- bolthole
- anchor rod
- star
- rod body
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Classifications
-
- 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
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/50—Anchored foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
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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)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of star basis, it includes star member, several beard and hair anchor rod bodies and the backing plate and anchor slab matched with beard and hair anchor rod body on an embedded ground.Star member is provided with several radially-protruding semi-girders, and its center is provided with a bolthole I；The outer end of each semi-girder is provided with a bolthole II；Backing plate center is provided with a bolthole III；The bottom of several beard and hair anchor rod bodies is anchored, and its top respectively passes through the bolthole I or bolthole II of star member, and is connected together through the bolthole III of backing plate with anchor slab；Beard and hair anchor rod body is made up of resistance to drawing-down silk, and the waterproof explosive equipped with detonator is tied up in the resistance to bottom for drawing and attenuating silk, and resistance to drawing-down silk is uniformly distributed in along circumferential direction around the waterproof explosive equipped with detonator.The invention also discloses the basic construction method.The present invention is simple in construction, radical change base form and form of construction work, has significantly saved investment, reduces spoir.
Description
Technical field
The present invention relates to ground and base form, more particularly to star basis and its construction method.
Background technology
At present, most superstructure weight are big, and floor space is also big, and its basis is that resistance to compression basis, i.e. foundation main will
The lower to load of superstructure application is born, deformation and stability requirement must be met, when basis meets above-mentioned requirements, you can full
Sufficient antidumping requirement, such typical foundation pattern includes isolated footing, strip footing, raft foundation etc..And anti_floating foundation master
There is heavy excavation basis, draw digging spread foundation, explosive expansion pile foundation etc.；Heavy excavation foundation class means the foundation ditch for being embedded in and having dug in advance
Basis that is interior and will backfilling rammed earth, it is constituted the resistance to plucking soil body with the backfill of disturbance, keeps the stabilization on basis；Draw digging base expanding and base expanding base
Plinth class means the basis being poured into concrete and framework of steel reinforcement in the native tire scraped out mechanically or manually to draw, and it is with natural earth
Body resistance to plucking and keep basis on pull out stabilization；Explosion expanded piling foundation class is meant to be cast in concrete and framework of steel reinforcement and is molded with explosive expansion
Native tire in bellend stub basis, its resistance to plucking soil body is essentially close to intact natural earth.Anti- as basis inclines
Cover, typically by Extended chemotherapy floor space to meet its stability against overturning requirement, there is not yet relatively antidumping stability fundamental goes out
It is existing.
For resistance to compression basis, rock mass has very high compression strength and performance because of it, is good subsoil, it is applied
Work is also simpler.Anti_floating foundation on Rock And Soil ground is quite different, either heavy excavation foundation class, still draws digging spread foundation
Class, the construction of explosion expanded piling foundation class have larger difficulty, and exist that quantities is big, time-consuming, cost is high, and environment is made
Into compared with havoc, but the problems such as the drag that can be provided is limited, consolidation effect is not ideal enough, for example：The master of heavy excavation foundation class
Size is wanted to be determined by its resistance to plucking stability requirement, in order to pull out the requirement of stability on meeting, it is necessary to increase key dimension, gesture
The destruction of spoir and exacerbation to environment must be increased.Novel foundation pattern how is developed, can be met by simple, inexpensive construction
The requirement of its stability against overturning, which turns into, adapts to Modern New structural development requirement urgent problem to be solved.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of star basis simple in construction, investment reduction.
Another technical problem to be solved by this invention is to provide the construction method on star basis.
To solve the above problems, star basis of the present invention, it is characterised in that：It includes the star on an embedded ground
Shape component, several beard and hair anchor rod bodies and the backing plate and anchor slab matched with the beard and hair anchor rod body；The star member
Provided with several radially-protruding semi-girders, its center is provided with a bolthole I；The outer end of each semi-girder is provided with a bolthole
Ⅱ；The backing plate center is provided with a bolthole III；The bottom of several beard and hair anchor rod bodies is anchored, and its top is divided equally
Not Chuan Guo the star member the bolthole I or the bolthole II, and through the backing plate the bolthole III with
The anchor slab is connected together；The beard and hair anchor rod body is made up of resistance to drawing-down silk, and the resistance to bottom for drawing and attenuating silk is tied up equipped with thunder
The waterproof explosive of pipe, and the resistance to drawing-down silk is uniformly distributed in the waterproof explosive equipped with the detonator along circumferential direction
Around.
The star member is provided with fixture.
The quantity of the semi-girder is three and more than three.
An injected hole is provided with the backing plate.
The diameter of the beard and hair anchor rod body being placed in described in several semi-girders in bolthole II, length and match with it
The backing plate of set and the thickness of anchor slab are respectively less than the beard and hair anchor pole being placed in described in the star member center in bolthole I
Diameter, length and the backing plate and the thickness of anchor slab matched with it of the body of rod.
The diameter of the beard and hair anchor rod body being placed in described in several semi-girders in bolthole II, length and match with it
The backing plate of set and the thickness all same of anchor slab.
The construction method on star basis as described above, comprises the following steps：
(1) Ping Ji and pit is excavated, i.e., select location is flattened and pressing the horizontal layout of star member, thickness, embedded rock thereon
Soil body depth excavates pit；
(2) set by design requirement in the pit of excavation in the outer end of the centrally disposed bolthole I of the star member, each semi-girder
Bolthole II is put, ground is set drilled afterwards；
(3) press first time 100 ~ 200g of explosive payload, second of 200 ~ 400g of explosive payload, third time explosive payload 400 ~ 800g ..., dress
Dose is gradually incremented by implements explosion to the bottom hole of each drilling, until bottom hole expands into cavity；
(4) the size of bottom hole cavity is determined, is specially：
1. lining rope and length of the length more than the different length of the drilling depth are got out equivalent to the design bottom hole cavity
The waddy of diameter；
2. one end of two lining ropes is tied up into waddy two ends respectively, and puts on lining rope dimension mark；
Waddy is sent into the bottom hole cavity and carried up and down by the other end for 3. carrying two lining ropes for being waddy, works as waddy
One end sticks the bottom hole cavity wall, and the dimension mark on two lining ropes it is consistent when, waddy is to be horizontal, wood now
Rod length is the bottom hole cavity diameter；
(5) the star member is poured by design requirement；
(6) the waterproof explosive equipped with detonator is tied up in the bottom of each beard and hair anchor rod body being made up of resistance to drawing-down silk, and made described
Resistance to drawing-down silk is uniformly distributed in around the waterproof explosive equipped with the detonator along circumferential direction；
(7) the waterproof explosive each beard and hair anchor rod body carried is placed in corresponding each drilling hole bottom；
(8) the slip casting into each drilling, fries the water resistant that injecting cement paste buries beard and hair anchor rod body institute band completely
Medicine, and its thickness is exceeded powder charge top, detonate the waterproof explosive at once；
(9) beard and hair anchor rod body top described in treating the injecting cement paste consolidation relief passes through bolthole I, the anchor pole of the star member
Hole II and the bolthole III of the backing plate matched with the beard and hair anchor rod body, and apply prestressing force and lock the beard and hair anchor pole
Body of rod top is on the anchor slab matched；
(10) it is suitable for reading to the injected hole to refilling the injecting cement paste in the drilling by the injected hole on the backing plate, together
When casting crack grouting body in wall-rock crack.
The present invention has advantages below compared with prior art：
1st, comprehensive, three-dimensional, compound anchoring is set up.
First, the detonation gas in the present invention produced by explosive charge is to the drilling hole bed rock soil body consumingly impact compress,
Cause Rock And Soil around drilling bottom to be crushed, form the enough cavitys of size, the anchoring with bottom enlarged footing is formed by slip casting
Body, the anchor force provided, which can be sufficiently achieved, makes superstructure stablize required withdrawal resistance；Second, quick-fried produced by explosive charge
Hong gas produces strong effect to the weak folder mud in drilling hole bed rock soil mass crack, and weakness folder mud is pushed open, makes Rock And Soil knot
Internal crack Rock And Soil will be improved after the crack degree increase and structural change in structure face, filling and injecting slurry body（Foot of hole week
The country rock soil body）Physical and mechanical property；Third, boring the explosive being buried that detonated at once after hole-bottom slurry-injection, detonation strength is driven
Dynamic resistance to drawing-down silk is merged with injecting cement paste, that is, is driven the resistance to drawing-down silk " disorderly such as fiber crops " being surrounded in injecting cement paste, " in great confusion ", turned into
" tangled skein of jute " blended closely with injecting cement paste；Fourth, Rock And Soil around detonation strength driving injecting cement paste filling borehole bottom
While crack, the resistance to drawing-down silk of detonation strength driving beard and hair anchor pole scatters to Rock And Soil crack, is especially made by blast
The resistance to drawing-down silk of beard and hair anchor pole is driven to penetrate dearly around drilling bottom among Rock And Soil crack with the injecting cement paste of strength driving,
Injecting cement paste by beard and hair it is anchor rod anchored in drilling while, tapping hole bottom cavity and wall-rock crack form to fill in drilling
Injecting cement paste is core, and the comprehensive, three-dimensional of silk extension, compound anchor are drawn and attenuated by the way that the injecting cement paste in wall-rock crack and beard and hair anchor pole are resistance to
Gu.
2nd, superior performance.
The present invention especially has on the premise of vertical bearing capacity and the flat load-carrying ability of water resistant are met as conventional foundation
There is very strong breakout capacity, while there is very strong resistance to capsizing, be well adapted under some new structures to load less, and
The transverse loads such as wind load and the situation for above pulling out load protrusion.
3rd, it is economic and practical.
The present invention is simple in construction, save material to greatest extent, radical change base form and form of construction work, significantly
Investment has been saved, spoir is reduced, environment is protected.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 crosses the sectional view of center and two semi-girder anchor hole axles for four semi-girder stars basis in the present invention.
Fig. 2 is top view of the present invention.
Fig. 3 is beard and hair anchor pole originally powder charge of the present invention section cross-sectional view.
In figure：1-Rock And Soil, 2-injecting cement paste 3-drilling 4-beard and hair anchor rod body 5-wall-rock crack, 6-star member
7-backing plate, 8-anchor slab, 9-crack grouting body, 10-detonator 11-13-injected hole of resistance to drawing-down 12-waterproof explosive of silk 14-
17-ground of the wall of a borehole 15-bottom hole, 16-fixture of cavity, 18-semi-girder.
Embodiment
As shown in Fig. 1 ~ 3, star basis, it includes star member 6, several beard and hair anchor rod bodies on an embedded ground 17
4 and the backing plate 7 and anchor slab 8 that match with beard and hair anchor rod body 4.
Star member 6 is provided with several radially-protruding semi-girders 18, and its center is provided with a bolthole I；Each semi-girder 18
Outer end is provided with a bolthole II；The center of backing plate 7 is provided with a bolthole III；The bottom of several beard and hair anchor rod bodies 4 is by anchor
Gu, its top respectively passes through the bolthole I or bolthole II of star member 6, and passes through the bolthole III and anchor slab 8 of backing plate 7
Connect together；Beard and hair anchor rod body 4 is made up of resistance to drawing-down silk 11, i.e., by the steel wire of moderate finite deformation can occur under detonation
Or（With）Other silk threads are constituted.The waterproof explosive 12 equipped with detonator 10 is tied up in the resistance to bottom for drawing and attenuating silk 11, and makes the silk of resistance to drawing-down
11 are uniformly distributed in around the waterproof explosive 12 equipped with detonator 10 along circumferential direction.
Wherein：Star member 6 is provided with the fixture 16 for being used for being connected with superstructure.
The quantity of semi-girder 18 is three and more than three.
An injected hole 13 is provided with backing plate 7.
Diameter, length and the backing plate 7 matched with it for the beard and hair anchor rod body 4 being placed in several boltholes II of semi-girder 18
Be respectively less than with the thickness of anchor slab 8 diameter of the beard and hair anchor rod body 4 being placed in the center bolthole I of star member 6, length and and its
The backing plate 7 and the thickness of anchor slab 8 matched.
Diameter, length and the backing plate 7 matched with it for the beard and hair anchor rod body 4 being placed in several boltholes II of semi-girder 18
With the thickness all same of anchor slab 8.
The construction method on star basis, comprises the following steps：
(1) Ping Ji and pit is excavated, i.e., select location is flattened and pressing the horizontal layout of star member 6, thickness, insertion thereon
The depth of Rock And Soil 1 excavates pit；
(2) set by design requirement in the pit of excavation in the outer end of the centrally disposed bolthole I of star member 6, each semi-girder 18
Bolthole II, sets drilling 3 to ground afterwards；
(3) press first time 100 ~ 200g of explosive payload, second of 200 ~ 400g of explosive payload, third time explosive payload 400 ~ 800g ..., dress
Dose is gradually incremented by implements explosion to the bottom hole of each drilling 3, until bottom hole expands into cavity；
(4) the size of bottom hole cavity 15 is determined, is specially：
1. the lining rope and length of different length of the length more than 3 depth of drilling are got out equivalent to the design diameter of bottom hole cavity 15
Waddy；
2. one end of two lining ropes is tied up into waddy two ends respectively, and puts on lining rope dimension mark；
Waddy is sent into bottom hole cavity 15 and carried up and down by the other end for 3. carrying two lining ropes for being waddy, when waddy one
End sticks the wall of bottom hole cavity 15, and the dimension mark on two lining ropes it is consistent when, waddy is to be horizontal, and waddy now is long
Degree is the diameter of bottom hole cavity 15；
(5) star member 6 is poured by design requirement；
(6) the waterproof explosive 12 equipped with detonator 10 is tied up in the bottom of each beard and hair anchor rod body 4 being made up of resistance to drawing-down silk 11,
And resistance to drawing-down silk 11 is uniformly distributed in along circumferential direction around the waterproof explosive 12 equipped with detonator 10；
(7) the waterproof explosive 12 each beard and hair anchor rod body 4 carried is placed in the corresponding bottom hole of each drilling 3；
(8) the slip casting into each drilling 3, makes injecting cement paste 2 bury the waterproof explosive 12 of beard and hair 4 bands of anchor rod body completely, and make it
Thickness exceeds powder charge top, and detonate waterproof explosive 12 at once；Ground around the bottom of 2 filling borehole of detonation strength driving injecting cement paste 3
While 1 crack of body, detonation strength drives resistance to drawing-down silk 11 to be scattered to the wall of a borehole 14 and the crack of Rock And Soil 1；
(9) treat the top of the consolidation of injecting cement paste 2 relief beard and hair anchor rod body 4 through the bolthole I of star member 6, bolthole II and with palpus
The bolthole III for the backing plate 7 that hair anchor rod body 4 matches, and apply prestressing force and lock the top of beard and hair anchor rod body 4 in matching
On the anchor slab 8 of set；
(10) it is suitable for reading to injected hole 13 by refilling injecting cement paste 2 in 13 pairs of drillings 3 of injected hole on backing plate 7, while casting is split
Gap injecting cement paste 9 is in wall-rock crack 5.
It is core to be formed with the injecting cement paste 2 drilled in 3, passes through that the injecting cement paste 2 and beard and hair anchor pole in wall-rock crack 5 are resistance to be drawn and attenuated
Comprehensive, three-dimensional, the compound anchoring of 11 extensions of silk, radical change base form and form of construction work, saves material to greatest extent
Material, makes the safety of engineering be protected, and has significantly saved investment, reduces spoir, is protected environment.
Claims (7)
1. star is basic, it is characterised in that：It includes an embedded ground（17）Star member（6）, several beard and hair anchor pole bars
Body（4）And with the beard and hair anchor rod body（4）The backing plate matched（7）And anchor slab（8）；The star member（6）Provided with number
Individual radially-protruding semi-girder（18）, its center is provided with a bolthole I；Each semi-girder（18）Outer end provided with anchor pole
Hole II；The backing plate（7）Center is provided with a bolthole III；Several beard and hair anchor rod bodies（4）Bottom anchored, its
Top respectively passes through the star member（6）The bolthole I or the bolthole II, and through the backing plate（7）'s
The bolthole III and the anchor slab（8）Connect together；The beard and hair anchor rod body（4）By the silk of resistance to drawing-down（11）Constitute, should
The silk of resistance to drawing-down（11）Bottom tie up equipped with detonator（10）Waterproof explosive（12）, and make the silk of resistance to drawing-down（11）Along Zhou Changfang
The detonator is housed to being uniformly distributed in（10）The waterproof explosive（12）Around.
2. star basis as claimed in claim 1, it is characterised in that：The star member（6）It is provided with fixture（16）.
3. star basis as claimed in claim 1, it is characterised in that：The semi-girder（18）Quantity for three and three with
On.
4. star basis as claimed in claim 1, it is characterised in that：The backing plate（7）On be provided with an injected hole（13）.
5. star basis as claimed in claim 1, it is characterised in that：It is placed in several semi-girders（18）In the bolthole II
The beard and hair anchor rod body（4）Diameter, length and the backing plate matched with it（7）And anchor slab（8）Thickness it is small
In being placed in the star member（6）The beard and hair anchor rod body described in center in bolthole I（4）Diameter, length and and its
The backing plate matched（7）And anchor slab（8）Thickness.
6. star basis as claimed in claim 1, it is characterised in that：It is placed in several semi-girders（18）In the bolthole II
The beard and hair anchor rod body（4）Diameter, length and the backing plate matched with it（7）And anchor slab（8）Thickness it is homogeneous
Together.
7. the construction method on star basis as claimed in claim 1, comprises the following steps：
(1) Ping Ji and pit is excavated, i.e., select location is flattened and pressing star member thereon（6）Horizontal layout, thickness, embedding
Enter Rock And Soil（1）Depth excavates pit；
(2) design requirement is pressed in the pit of excavation in the star member（6）Centrally disposed bolthole I, each semi-girder（18）'s
Outer end sets bolthole II, ground is set drilled afterwards（3）；
(3) press first time 100 ~ 200g of explosive payload, second of 200 ~ 400g of explosive payload, third time explosive payload 400 ~ 800g ..., dress
Dose is gradually incremented by each drilling（3）Bottom hole implement explosion, until bottom hole expands into cavity；
(4) bottom hole cavity is determined（15）Size, be specially：
1. length is got out more than the drilling（3）The lining rope and length of the different length of depth are empty equivalent to the bottom hole is designed
Chamber（15）The waddy of diameter；
2. one end of two lining ropes is tied up into waddy two ends respectively, and puts on lining rope dimension mark；
Waddy is sent into the bottom hole cavity by the other end for 3. carrying two lining ropes for being waddy（15）It is interior and carry up and down, when
Waddy one end sticks the bottom hole cavity（15）When dimension mark on wall, and two lining ropes is consistent, waddy is to be horizontal,
Waddy length now is the bottom hole cavity（15）Diameter；
(5) the star member is poured by design requirement（6）；
(6) each by the silk of resistance to drawing-down（11）The beard and hair anchor rod body of composition（4）Bottom tie up equipped with detonator（10）Water resistant fry
Medicine（12）, and make the silk of resistance to drawing-down（11）It is uniformly distributed in along circumferential direction equipped with the detonator（10）The waterproof explosive
（12）Around；
(7) will each beard and hair anchor rod body（4）The waterproof explosive carried（12）It is placed in corresponding each drilling
（3）Bottom hole；
(8) to each drilling（3）Interior slip casting, makes injecting cement paste（2）The beard and hair anchor rod body is buried completely（4）The institute of institute's band
State waterproof explosive（12）, and its thickness is exceeded powder charge top, detonate the waterproof explosive at once（12）；
(9) the injecting cement paste is treated（2）Consolidate beard and hair anchor rod body described in relief（4）Top passes through the star member（6）Anchor pole
Hole I, bolthole II and with the beard and hair anchor rod body（4）The backing plate matched（7）Bolthole III, and apply and prestressing force and lock
The fixed beard and hair anchor rod body（4）Top is in the anchor slab matched（8）On；
(10) the backing plate is passed through（7）On injected hole（13）To the drilling（3）Inside refill the injecting cement paste（2）Described in
Injected hole（13）It is suitable for reading, while crack grouting body of casting（9）In wall-rock crack（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215878.6A CN107268596A (en) | 2016-04-09 | 2016-04-09 | Star basis and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215878.6A CN107268596A (en) | 2016-04-09 | 2016-04-09 | Star basis and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107268596A true CN107268596A (en) | 2017-10-20 |
Family
ID=60052154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610215878.6A Withdrawn CN107268596A (en) | 2016-04-09 | 2016-04-09 | Star basis and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107268596A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059605A (en) * | 2020-07-31 | 2022-02-18 | 国网河南省电力公司新密市供电公司 | Power tower foundation settlement grouting repair method |
-
2016
- 2016-04-09 CN CN201610215878.6A patent/CN107268596A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059605A (en) * | 2020-07-31 | 2022-02-18 | 国网河南省电力公司新密市供电公司 | Power tower foundation settlement grouting repair method |
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Application publication date: 20171020 |