CN110528562A - Transmission line of electricity combines the design method of the anchor pole of the double anchor slab foundation structures of plate stem - Google Patents
Transmission line of electricity combines the design method of the anchor pole of the double anchor slab foundation structures of plate stem Download PDFInfo
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- CN110528562A CN110528562A CN201910796832.1A CN201910796832A CN110528562A CN 110528562 A CN110528562 A CN 110528562A CN 201910796832 A CN201910796832 A CN 201910796832A CN 110528562 A CN110528562 A CN 110528562A
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- Prior art keywords
- anchor pole
- anchor
- design
- plate
- upper plate
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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 design methods of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem, double anchor slab bases fixed structure includes sheet-pile, plate group and anchor rod component, plate group includes top-down upper plate and two lower plates being independently arranged, and in the state of constructing completion, upper plate and lower plate are embedded in underground, and at least part of sheet-pile is exposed to environment；Anchor rod component includes the first anchor pole and the second anchor pole, and it is affixed that sheet-pile and upper plate pass through the first anchor pole, and upper plate passes through that the second anchor pole is affixed with two lower plates respectively, and the surface of upper plate and lower plate and/or lower plate is provided with arrangement of reinforcement；The design method of anchor pole includes: step 1: carrying out the dimensional structure design of anchor pole；Step 2: the dimensional structure of the anchor pole according to obtained in step 1 carries out foundation bolt design, finally completes the design of entire anchor pole；The present invention not only improves anchor pole and transmits withdrawal resistance in bottom plate, also improves the durability of anchor pole.
Description
Technical field
The invention belongs to electric power line pole tower equipment technical fields, and in particular to a kind of double anchor slabs of transmission line of electricity joint plate stem
The design method of the anchor pole of foundation structure.
Background technique
Transmission line tower foundation mainly uses " heavy excavation " foundation class, " draw and dig base expanding and base expanding " foundation class, " explosion expanded piling " basis
Class.The key dimension of " heavy excavation " foundation class need to be determined according to the resistance to plucking stability requirement of transmission line tower foundation, in order to full
The needs of stability are pulled out on foot, it is necessary to increase key dimension, improve foundation cost, simultaneously because spoir is more, to environment
It destroys also larger." draw and dig base expanding and base expanding " foundation class is suitable in the anhydrous cohesive soil for penetrating into foundation pit, while pile foundation specification provides, such as
Basis uses pile foundation, and essential bearing stratum needs guiding through collapsible loess, therefore the basis is with not being suitable for big thickness collapsible loess
Area." explosion expanded piling " foundation class difficulty of construction is larger, has biggish concealment, and complicated construction technique, construction quality are difficult to control
It makes, construction quality problem is difficult to find in time, and there is also certain difficulties for detection after work.Therefore, in conclusion current transmission of electricity
Inconvenient ask is detected after overhead line structures foundation structure is primarily present complicated construction technique, and construction quality is not easy to control and work
Topic.
Summary of the invention
The object of the present invention is to provide the design methods of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem, it is intended to
Complicated construction technique existing for the current double anchor slab foundation structures of transmission line of electricity joint plate stem is solved, and construction quality is not easy to control
And the problem of at least part in inconvenience is detected after work.
The technical scheme adopted by the invention is that
A kind of design method of the anchor pole of the double anchor slab basis fixed structures of transmission line of electricity joint plate stem,
Double anchor slab bases fixed structure includes sheet-pile, plate group and anchor rod component,
Wherein, plate group includes top-down upper plate and lower plate, and lower plate includes two lower plates being independently arranged, and
And
In the state of constructing completion, upper plate and lower plate are embedded in underground, and at least part of sheet-pile is exposed to environment；
Wherein, anchor rod component includes the first anchor pole and the second anchor pole, and sheet-pile and upper plate are affixed by the first anchor pole, upper plate and
Two lower plates pass through that the second anchor pole is affixed respectively, and the upper surface and/or lower surface of upper plate are provided with the first arrangement of reinforcement, the upper table of lower plate
Face and/or lower surface are provided with the second arrangement of reinforcement；
The design method of anchor pole includes:
Step 1: carrying out the dimensional structure design of anchor pole；
Step 2: the dimensional structure of the anchor pole according to obtained in step 1 carries out foundation bolt design, finally completes entire anchor
The design of bar.
The features of the present invention also characterized in that
In step 1, the structure design of anchor pole includes calculating and the Soil Anchor Design of anchor pole uplift force；
The calculating of anchor pole uplift force are as follows: in the case of being pulled out on basis carries out, resisted according to anchor pole for what basic upper plate provided
It topples power, the uplift force for obtaining anchor pole is T '.
Soil Anchor Design is specially the sectional area A that anchor pole is determined according to formula (1)s:
Wherein, AsFor anchor pole sectional area m2, fptkFor anchor pole tensile strength standard value KPa, KtFor anchor pole tensile-strength safety factor,
T ' is the uplift force of anchor pole；
fptkAnd KtValue all in accordance in DL/T5219-2005 aerial power transmission line basic engineering technical stipulation determine.
In step 2, the design of foundation bolt specifically includes determining foundation bolt and corresponding with foundation bolt and anchor pole
The dimensions of accessory.
The outer layer design of anchor pole has anti-corrosion material and anticorrosive casing pipe.
The beneficial effects of the present invention are: the design side of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Method is applied in Retaining Wall Engineering based on anchor pole pulling plate technology, and design has developed the novel power transmission overhead line structures basis
Pattern, anchor pole material property are consistent with transmission tower foundation bolt, and the present invention improves anchor pole and transmits withdrawal resistance on floor,
Prestressed effect is provided to overall structure, while also improving the durability of anchor pole.
Detailed description of the invention
Fig. 1 is that joint plate stem is double in the design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
The schematic diagram of anchor slab foundation structure；
Fig. 2 is foundation structure in the design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Schematic top plan view；
Fig. 3 is the first anchor pole in the design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Structural schematic diagram；
Fig. 4 is the second anchor pole in the design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Structural schematic diagram；
Fig. 5 is that bolt shaft is surveyed in the design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Anti-corrosive cover schematic diagram.
In figure, 1. upper plates, 2. lower plates, 3. upper plate steel plates, 4. lower plate steel plates, 5. first anchor poles, 6. second anchor poles, 7. lower spiral shells
Cap, 8. protective caps, 9. gaskets, 10. upper plate short columns, 11. foot pedals, 12. anti-corrosion pipe sleeves, 13 anti-corrosion materials.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention,
As depicted in figs. 1 and 2, a kind of design side of the anchor pole of the double anchor slab basis fixed structures of transmission line of electricity joint plate stem
Method, which is characterized in that
Double anchor slab bases fixed structure includes sheet-pile, plate group and anchor rod component,
Wherein, plate group includes top-down upper plate and lower plate, and lower plate includes two lower plates being independently arranged, and
And
In the state of constructing completion, upper plate and lower plate are embedded in underground, and at least part of sheet-pile is exposed to environment；
As shown in Figure 3 and Figure 4, wherein anchor rod component includes the first anchor pole and the second anchor pole, and sheet-pile and upper plate pass through first
Anchor pole is affixed, and upper plate passes through that the second anchor pole is affixed with two lower plates respectively, and the upper surface and/or lower surface of upper plate are provided with first
Arrangement of reinforcement, the upper surface and/or lower surface of lower plate are provided with the second arrangement of reinforcement；
The design method of anchor pole includes:
Step 1: carrying out the dimensional structure design of anchor pole；
Step 2: the dimensional structure of the anchor pole according to obtained in step 1 carries out foundation bolt design, finally completes entire anchor
The design of bar.
In step 1, the structure design of anchor pole includes calculating and the Soil Anchor Design of anchor pole uplift force；
The calculating of anchor pole uplift force are as follows: in the case of being pulled out on basis carries out, resisted according to anchor pole for what basic upper plate provided
It topples power, the uplift force for obtaining the anchor pole is T '.
Soil Anchor Design is specially the sectional area A that anchor pole is determined according to formula (1)s:
Wherein, AsFor anchor pole sectional area m2, fptkFor anchor pole tensile strength standard value KPa, KtFor anchor pole tensile-strength safety factor,
T ' is the uplift force of anchor pole；
fptkAnd KtValue all in accordance in DL/T5219-2005 aerial power transmission line basic engineering technical stipulation determine.
In step 2, the design of foundation bolt specifically includes determining foundation bolt and corresponding with foundation bolt and anchor pole
The dimensions of accessory.
As shown in figure 5, the outer layer design of anchor pole has anti-corrosion material and anticorrosive casing pipe.
Embodiment
As a kind of specific embodiment, a kind of anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention
Design method；
Step 1: carry out the dimensional structure design of anchor pole:
(1) anchor cable uplift force calculates；
Due to the presence of horizontal force, on the basis of pull out when, anchor cable can provide the power of certain antidumping for basic upper plate, because
This, the pulling force on anchor cable is pulling capacity T ', i.e. T '=556kN.
(2) the dimensional structure design of anchor pole；
By " CECS22-2005 rock soil anchor (rope) technical regulation " and above-mentioned pulling capacity T '=556kN, anchor pole is cut
Face area can be determined as the following formula:
In formula: AsAnchor cable sectional area m2, fptkFor anchor pole tensile strength standard value, it is shown in Table 1, KPa, KtFor anchor pole tension safety
Coefficient, can be by 2 value of table.
The associated materials of anchor pole can be obtained referring to " DL/T5219-2005 aerial power transmission line basic engineering technical stipulation "
Mechanical property:
Table 1: anchor pole tensile strength standard value (MPa)
Table 2: anchor cable tensile-strength safety factor
Selection anchor cable is 4 rope M36 anchor poles, and since engineering belongs to permanent work, safety coefficient takes Kt=1.8, out
F is taken in security consideration anchor pole tensile strengthptk=1200MPa.Then minimum anchor cable sectional area can be calculated according to formula (1):
Then anchor pole minimum diameter are as follows:
Therefore bolt diameter should be greater than 16.3mm, safety and construct the factors such as convenient under conditions of, use in the design
Prefabricated anchor pole, bolt diameter take 42mm.
Step 2: carry out foundation bolt design:
For the connection convenient for foundation bolt and anchor cable, it is the lower margin spiral shell of the M36 specification of 42mm that upper and lower plates, which select 4 diameters,
The component for connecing tower leg, upper carrying billet, basic upper plate is tethered, while connecting anchor pole and lower plate bottom carrying billet and lower plate
Between component.Since foundation bolt and anchor pole use the steel of same specification, tensile strength is identical as anchor pole；Together
When uplift force transmitted by anchor pole, therefore uplift force is identical as anchor pole, and old place foot bolt also meets tension requirement.
In addition, as shown in figure 5, anti-corrosion material and anticorrosive casing pipe are arranged outside anchor pole, it can be ensured that the basis in middle corruption and
The application in strong rotten area.
A kind of design method of the anchor pole of the double anchor slab foundation structures of transmission line of electricity joint plate stem of the present invention, passes through setting for anchor pole
Meter, primarily serves transmitting withdrawal resistance, provides prestressed effect, anchor pole material property and transmission tower lower margin spiral shell to overall structure
Bolt is consistent, while using the design of anti-corrosive cover, improving the durability of anchor pole；The present invention is suitble to promote the use of.
Claims (7)
1. the design method that transmission line of electricity combines the anchor pole of the double anchor slab foundation structures of plate stem, which is characterized in that
Double anchor slab bases fixed structure includes sheet-pile, plate group and anchor rod component,
Wherein, the plate group includes top-down upper plate (1) and lower plate, and the lower plate includes two and is independently arranged
Lower plate (2), and
Construct complete in the state of, the upper plate (1) and the lower plate (2) are embedded in underground, at least the one of the sheet-pile
Part is exposed to environment；
Wherein, the anchor rod component includes the first anchor pole (5) and the second anchor pole (6), and the sheet-pile and upper plate (1) pass through the first anchor
Bar (5) is affixed, and the upper plate (1) and two lower plates (2) are affixed by the second anchor pole (6) respectively, the upper surface of the upper plate (1)
And/or lower surface is provided with the first arrangement of reinforcement, the upper surface and/or lower surface of the lower plate (2) are provided with the second arrangement of reinforcement；
The design method of the anchor pole includes:
Step 1: carrying out the dimensional structure design of anchor pole；
Step 2: the structure size of the anchor pole according to obtained in step 1 carries out foundation bolt design, finally completes entire anchor
The design of bar.
2. the design method of anchor pole according to claim 1, which is characterized in that in step 1, the structure of the anchor pole is designed
Calculating and Soil Anchor Design including anchor pole uplift force.
3. the design method of anchor pole according to claim 2, which is characterized in that the calculating of the anchor pole uplift force are as follows: In
Basis carries out in the case of pulling out, and is the anchorage that basic upper plate provides according to the anchor pole, obtain the anchor pole on pull out
Power is T '.
4. the design method of anchor pole according to claim 2, which is characterized in that the Soil Anchor Design is specially according to formula
(1) the sectional area A of anchor pole is determineds:
Wherein, AsFor anchor pole sectional area m2, fptkFor anchor pole tensile strength standard value KPa, KtFor anchor pole tensile-strength safety factor, T ' is
The uplift force of anchor pole.
5. the design method of anchor pole according to claim 4, which is characterized in that the fptkWith the KtValue all in accordance with
It is determined in DL/T5219-2005 aerial power transmission line basic engineering technical stipulation.
6. the design method of anchor pole according to claim 1, which is characterized in that in step 2, the design of the foundation bolt
Specifically include the dimensions of determining foundation bolt and accessory corresponding with foundation bolt and anchor pole.
7. the design method of anchor pole according to claim 1, which is characterized in that the outer layer design of the anchor pole has preserving timber
Material and anticorrosive casing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796832.1A CN110528562A (en) | 2019-08-27 | 2019-08-27 | Transmission line of electricity combines the design method of the anchor pole of the double anchor slab foundation structures of plate stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796832.1A CN110528562A (en) | 2019-08-27 | 2019-08-27 | Transmission line of electricity combines the design method of the anchor pole of the double anchor slab foundation structures of plate stem |
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| Publication Number | Publication Date |
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| CN110528562A true CN110528562A (en) | 2019-12-03 |
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|---|---|---|---|
| CN201910796832.1A Pending CN110528562A (en) | 2019-08-27 | 2019-08-27 | Transmission line of electricity combines the design method of the anchor pole of the double anchor slab foundation structures of plate stem |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254731Y (en) * | 2008-09-19 | 2009-06-10 | 浙江省东阳第三建筑工程有限公司 | Steel cross beam type dismountable stupa base |
| CN201495554U (en) * | 2009-09-25 | 2010-06-02 | 中国电力科学研究院 | Anchor bolt combination excavating compound base |
| CN102900093A (en) * | 2012-10-11 | 2013-01-30 | 甘肃省电力公司电力经济技术研究院 | Plate-type double-cable foundation structure of transmission tower |
| CN204849802U (en) * | 2015-06-03 | 2015-12-09 | 国核电力规划设计研究院 | Hollow board -like foundation of transmission line |
-
2019
- 2019-08-27 CN CN201910796832.1A patent/CN110528562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254731Y (en) * | 2008-09-19 | 2009-06-10 | 浙江省东阳第三建筑工程有限公司 | Steel cross beam type dismountable stupa base |
| CN201495554U (en) * | 2009-09-25 | 2010-06-02 | 中国电力科学研究院 | Anchor bolt combination excavating compound base |
| CN102900093A (en) * | 2012-10-11 | 2013-01-30 | 甘肃省电力公司电力经济技术研究院 | Plate-type double-cable foundation structure of transmission tower |
| CN204849802U (en) * | 2015-06-03 | 2015-12-09 | 国核电力规划设计研究院 | Hollow board -like foundation of transmission line |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191203 |
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| RJ01 | Rejection of invention patent application after publication |