CN107288147A - Rock foundation pole and tower foundation construction method - Google Patents
Rock foundation pole and tower foundation construction method Download PDFInfo
- Publication number
- CN107288147A CN107288147A CN201710706133.4A CN201710706133A CN107288147A CN 107288147 A CN107288147 A CN 107288147A CN 201710706133 A CN201710706133 A CN 201710706133A CN 107288147 A CN107288147 A CN 107288147A
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- China
- Prior art keywords
- rock
- pole
- earth anchor
- fitting
- drilling platform
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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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Abstract
The invention discloses a kind of rock foundation pole and tower foundation construction method, one, in pole and tower foundation boundary of works area with concrete build horizontal drilling platform；2nd, basic hole is bored downwards in horizontal drilling platform surface using rig extend to rock interior；3rd, in horizontal drilling platform surface, several earth anchor reinforced holes are bored downwards around basic hole and extend to rock interior；4th, steel reinforcement cage built-in fitting is placed in basic hole, earth anchor reinforcing bar is placed in earth anchor reinforced hole；5th, spiral stiffener is made to cover and be sleeved on around steel reinforcement cage built-in fitting；The 6th, concrete cast template, the concrete plummer of the casting concrete formation cladding steel reinforcement cage built-in fitting, earth anchor reinforcing bar and spiral stiffener set are installed on horizontal drilling platform.Advantage of the present invention is mainly reflected in the stability that overall pole and tower foundation structure takes full advantage of rock in ground, is excavated due to that need not carry out explosion and large area, reduces vegetation deterioration, eliminates the potential safety hazard that ground loosening belt comes.
Description
Technical field
The present invention relates to pole and tower foundation construction method, more particularly, to rock foundation pole and tower foundation construction method.
Background technology
Pole and tower foundation is to fix shaft tower on the ground, for stablizing shaft tower, it is ensured that shaft tower not run-off the straight, collapse, under
It is heavy and on the facility that pulls out etc..On the basis of shaft tower is fixed on by foundation bolt.Shaft tower include photovoltaic plant tower bar, communication iron tower,
Electric force pole tower etc..The selection of pole and tower foundation pattern, the features such as shaft tower construction regional geology, execution conditions and shaft tower pattern should be combined
Consider；Pole and tower foundation construction generally uses digging up and filling in mode, and the force request of shaft tower is met by concrete chassis.
For ragstone ground, generally using rock anchor assembly class basis, dowel or foundation bolt are directly embedded into petrosal foramen
It is interior, then dowel or foundation bolt is become entirety with rock by concrete grouting.Rock anchor assembly class basis
There are rigors for the intensity of rock in ground, and engineering site geological environment complexity is various, differs and surely meets rock
The requirement of killagh pile foundation, such as hard crisp stone body, the relatively low stone body of compression strength etc.；And field geology environment prospecting difficulty
Height, cost is high, and time-consuming.Also, the relatively low roughness of rock surface of most rate of decay is low, combined with concrete it is insecure,
If directly building concrete frame tower foundation on rock foundation, overall construction intensity is low, anti-to topple over ability, it is impossible to actual to answer
With.Unstable problem is combined for rock and concrete, is tied if strengthening both by squeezing into stiffener in rock
With joint efforts, there is problem is rock foundation surface irregularity, and miniature portable churn can not work, and part mountain area large type drill is not
It can show up, cause constructional difficulties.If destroying rock texture using the method for explosion, then bar is built by the method for digging up and filling in
Tower foundation, the problem of existing be：1st, explosion can cause the region ground to loosen, and destroy the stability of original ground, though backfill
Also it is difficult to the native structural strength that restores to the original state by compacting；To meet the stability requirement on basis, it is necessary to increase the size on basis,
Construction cost increase.2nd, without the stability using rock in itself with periphery soil layer strong bonded.3rd, applying needed for digging up and filling in
Work cost, cost of labor and equipment cost are all higher, and inconvenient in the severe mountain environment construction of conditions of transportation.
The content of the invention
Present invention aims at provide a kind of safe and reliable, stabilized structure, low construction cost, short time limit, geographical environment office
Sex-limited small rock foundation pole and tower foundation construction method.
To achieve the above object, the present invention takes following technical proposals：
Rock foundation pole and tower foundation construction method of the present invention, comprises the steps：
The first step, it is determined that on the ground of pole and tower foundation position clear up debris earthing to rock surface is exposed, then in the bar
Build one-shot job horizontal plane as horizontal drilling platform with concrete in tower foundation boundary of works area, the horizontal drilling platform with
The rock peak flushes with or slightly higher than rock peak；
Second step, the position for determining pole and tower foundation central point and the placement of steel reinforcement cage built-in fitting, are existed using portable large-diameter drill
The horizontal drilling platform surface bores downwards basic hole, and the basic hole extends to the rock interior, forms connection " mortise and tenon "
Structure；The diameter in basic hole is determined according to the shapes and sizes of the steel reinforcement cage built-in fitting, is met filling and is required；
3rd step, in the horizontal drilling platform surface, bore several ground downwards using portable impact drill around the basic hole
Anchor reinforced hole, each earth anchor reinforced hole all extends to the rock interior, the diameter of earth anchor reinforced hole, position, quantity by
The size of rock, the size of pole and tower foundation are determined according to design discipline；
4th step, the steel reinforcement cage built-in fitting is placed in the basic hole, earth anchor reinforcing bar is placed in the earth anchor reinforced hole,
Extend the horizontal drilling platform surface in the top of steel reinforcement cage built-in fitting and earth anchor reinforcing bar；
5th step, making spiral stiffener cover and are sleeved on around steel reinforcement cage built-in fitting, the spiral stiffener set
It can prevent that the concrete foundation after solidification from being influenceed and fractureed by external force in use；
6th step, concrete cast template is installed on the horizontal drilling platform, the casting concrete formation cladding reinforcing bar
The concrete plummer of cage built-in fitting, earth anchor reinforcing bar and spiral stiffener set；It is noted that steel reinforcement cage is pre-buried in casting process
Part position whether deviation, upper surface whether level, if any deviation, adjustment built-in fitting position, is reaffirmed after the completion of pouring in time
Built-in fitting position does not have after deviation, waits the solidification of concrete plummer, pole and tower foundation is conserved, wait pole and tower foundation structure
Firm shaping.
In 5th step, the upper and lower part of the spiral stiffener set is set in the steel reinforcement cage built-in fitting
Upper and lower part, spiral stiffener set middle part be sleeved on the earth anchor reinforcing bar for extending the horizontal drilling platform.
The steel reinforcement cage built-in fitting is by many vertical main reinforcements and the stirrup being fixed on many vertical main reinforcements
The rectangle stand constituted；The lower end of many vertical main reinforcements is the U-shaped structure extended laterally, many vertical main reinforcements
Upper end is foundation bolt structure, for the shaft tower that is connected.
It is inverted T-shaped structure positioned at the concrete plummer longitudinal section of the horizontal drilling platform upper surface.
Advantage major embodiment of the present invention is in the following areas：
1st, overall pole and tower foundation structure takes full advantage of the stability of rock in ground.Each built-in fitting of concrete plummer bottom
With concrete integrative-structure down into rock interior, " mortise and tenon " structure of high bonding strength is formed with rock foundation.
2nd, there are some earth anchor reinforcing bars between concrete plummer and rock, add pole and tower foundation structural strength, enhance
The anti-ability of toppling over of shaft tower；By pre-buried spiral stiffener set, the connection between concrete plummer and ground is enhanced, together
When effect of contraction is played to concrete, enhance cracking resistance, the rupture strength of concrete plummer；Pre-buried spiral stiffener set
Certain effect of contraction is also played to the rock in ground with earth anchor reinforcing bar collective effect, makes rock formation one integrated
High-strength structure body, reduces dependence of the overall structure to rock strength.
3rd, construction process does not need explosion, is excavated without large area, without backfill and backfill rammed earth, both reduces cost
Ensure safety again；Concrete horizontal drilling platform is built on rock, construction bar is provided for small portable large-diameter drill
Part, work progress does not need large scale equipment, and small portable instrument can be completed, and easy construction is affected by environment small, practicality
By force, be conducive in the severe Mountainous Regions popularization and application of conditions of transportation, can save 70% expense through site operation checking, contract
Short 60% duration.Simultaneously as explosion and large area excavation need not be carried out, vegetation deterioration is reduced, original ground is not destroyed
Steadiness, eliminates the potential safety hazard that ground loosening belt comes.
Brief description of the drawings
Fig. 1 is the rock foundation pole and tower foundation structural representation constructed according to the inventive method.
Fig. 2 is steel reinforcement cage embedded part structure schematic diagram of the present invention.
Fig. 3 is Fig. 2 A-A to cross section structure diagram.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, the present embodiment using technical solution of the present invention before
Put and implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
State embodiment.
As Figure 1-3, rock foundation pole and tower foundation construction method of the present invention, comprises the steps：
The first step, on the ground 1 of the pole and tower foundation position determined debris earthing is cleared up to exposing the surface of rock 2, Ran Hou
Build one-shot job horizontal plane as horizontal drilling platform 2 with concrete in pole and tower foundation boundary of works area, horizontal drilling platform 3 with
The peak of rock 2 flushes with or slightly higher than the peak of rock 2；
Second step, the position for determining pole and tower foundation central point and the placement of steel reinforcement cage built-in fitting, are existed using portable large-diameter drill
Basic hole is bored downwards on the surface of horizontal drilling platform 3, and basic hole extends to the rock interior, forms connection " mortise and tenon " structure；Base
The diameter in plinth hole is determined according to the shapes and sizes of steel reinforcement cage built-in fitting, is met filling and is required；
3rd step, on the surface of horizontal drilling platform 3, bore several earth anchor reinforcing bars downwards using portable impact drill around basic hole
Hole, each earth anchor reinforced hole is all extended to inside rock 2, size by rock 2 of the diameter, position, quantity of earth anchor reinforced hole, bar
The size of tower foundation is determined according to design discipline；
4th step, steel reinforcement cage built-in fitting is placed in basic hole, earth anchor reinforcing bar 4 is placed in each earth anchor reinforced hole, steel reinforcement cage
Extend the surface of horizontal drilling platform 3 in the top of built-in fitting and earth anchor reinforcing bar 4；
5th step, make spiral stiffener set 5, it is pre- that the upper and lower part of spiral stiffener set 5 is set in steel reinforcement cage
The upper and lower part of embedded part, the middle part of spiral stiffener set 5 is sleeved on the earth anchor reinforcing bar 4 for extending horizontal drilling platform 3；
Spiral stiffener set 5 can prevent that the concrete foundation after solidification from being influenceed and fractureed by external force in use；
6th step, concrete cast template is installed on horizontal drilling platform 3, casting concrete formation cladding reinforcing steel bar cage is pre-buried
The concrete plummer 6 of part, earth anchor reinforcing bar 4 and spiral stiffener set 5；It is noted that steel reinforcement cage built-in fitting position in casting process
Put whether deviation, upper surface whether level, if any deviation, adjustment built-in fitting position, reinforcing bar is reaffirmed after the completion of pouring in time
Whether cage built-in fitting position waits concrete plummer 6 to solidify, pole and tower foundation is conserved after deviation, wait pole and tower foundation
Stabilized structure is molded；It is inverted T-shaped structure positioned at the longitudinal section of the concrete plummer 6 of the upper surface of horizontal drilling platform 3.
In 5th step, as shown in Figure 2,3, steel reinforcement cage built-in fitting is to be fixed on four by four vertical main reinforcements 7 and interval
The rectangle stand that multiple stirrups 8 on vertical main reinforcement 7 are constituted（Certainly, steel reinforcement cage built-in fitting is alternatively other structures form
Stand）；The lower end of four vertical main reinforcements 7 is the structure of U-shaped 9 extended laterally, and the upper end of four vertical main reinforcements 7 is equal
For the structure of foundation bolt 10, for the shaft tower that is connected.
Claims (4)
1. a kind of rock foundation pole and tower foundation construction method, it is characterised in that：Comprise the steps：
The first step, it is determined that on the ground of pole and tower foundation position clear up debris earthing to rock surface is exposed, then in the bar
One-shot job horizontal plane is built with concrete be used as horizontal drilling platform in tower foundation boundary of works area；
Second step, the position for determining the pole and tower foundation central point and the placement of steel reinforcement cage built-in fitting, are bored using portable heavy caliber
Machine bores downwards basic hole in the horizontal drilling platform surface, and the basic hole extends to the rock interior；Basic hole it is straight
Footpath is determined according to the shapes and sizes of the steel reinforcement cage built-in fitting, is met filling and is required；
3rd step, in the horizontal drilling platform surface, bore several earth anchor steel downwards using impact drill around the basic hole
Muscle hole, each earth anchor reinforced hole all extends to the rock interior, and the diameter of earth anchor reinforced hole, position, quantity are by rock
Size, the size of pole and tower foundation determines according to design discipline；
4th step, the steel reinforcement cage built-in fitting is placed in the basic hole, earth anchor reinforcing bar is placed in the earth anchor reinforced hole,
Extend the horizontal drilling platform surface in the top of steel reinforcement cage built-in fitting and earth anchor reinforcing bar；
5th step, making spiral stiffener cover and are sleeved on around steel reinforcement cage built-in fitting；
6th step, concrete cast template is installed on the horizontal drilling platform, the casting concrete formation cladding reinforcing bar
The concrete plummer of cage built-in fitting, earth anchor reinforcing bar and spiral stiffener set.
2. rock foundation pole and tower foundation construction method according to claim 1, it is characterised in that：In 5th step, institute
The upper and lower part for stating spiral stiffener set is set in the upper and lower part of the steel reinforcement cage built-in fitting, and spiral strengthens steel
The middle part of muscle set is sleeved on the earth anchor reinforcing bar for extending the horizontal drilling platform.
3. rock foundation pole and tower foundation construction method according to claim 1 or 2, it is characterised in that：The steel reinforcement cage is pre-
Embedded part is the rectangle stand that is made up of many vertical main reinforcements and the stirrup being fixed on many vertical main reinforcements；It is many
The lower end of the vertical main reinforcement of root is the U-shaped structure extended laterally, and the upper end of many vertical main reinforcements is foundation bolt knot
Structure.
4. rock foundation pole and tower foundation construction method according to claim 1 or 2, it is characterised in that：Positioned at the level
The concrete plummer longitudinal section of drilling platform upper surface is inverted T-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706133.4A CN107288147A (en) | 2017-08-17 | 2017-08-17 | Rock foundation pole and tower foundation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706133.4A CN107288147A (en) | 2017-08-17 | 2017-08-17 | Rock foundation pole and tower foundation construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107288147A true CN107288147A (en) | 2017-10-24 |
Family
ID=60106166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710706133.4A Withdrawn CN107288147A (en) | 2017-08-17 | 2017-08-17 | Rock foundation pole and tower foundation construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107288147A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589759A (en) * | 2018-05-15 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of shaft tower composite foundation |
| CN111197318A (en) * | 2018-11-19 | 2020-05-26 | 纳布拉风力技术公司 | Foundation for a tower of a wind turbine |
| CN112411605A (en) * | 2020-11-30 | 2021-02-26 | 国网四川省电力公司电力科学研究院 | Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower |
-
2017
- 2017-08-17 CN CN201710706133.4A patent/CN107288147A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589759A (en) * | 2018-05-15 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of shaft tower composite foundation |
| CN111197318A (en) * | 2018-11-19 | 2020-05-26 | 纳布拉风力技术公司 | Foundation for a tower of a wind turbine |
| CN111197318B (en) * | 2018-11-19 | 2023-03-14 | 纳布拉温德科技有限公司 | Foundation for a tower of a wind turbine |
| CN112411605A (en) * | 2020-11-30 | 2021-02-26 | 国网四川省电力公司电力科学研究院 | Reinforcement reinforcing method and system for foundation anchor bolt of power transmission tower |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171024 |