CN106436734A - Power transmission line assembly-type arch base and construction method - Google Patents
Power transmission line assembly-type arch base and construction method Download PDFInfo
- Publication number
- CN106436734A CN106436734A CN201610503568.4A CN201610503568A CN106436734A CN 106436734 A CN106436734 A CN 106436734A CN 201610503568 A CN201610503568 A CN 201610503568A CN 106436734 A CN106436734 A CN 106436734A
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- Prior art keywords
- unidirectional
- steel strand
- strand wires
- cambered
- pieces
- Prior art date
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 239000002689 soil Substances 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011509 cement plaster Substances 0.000 claims description 4
- 210000000481 breast Anatomy 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000002457 bidirectional effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000003187 abdominal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/08—Reinforcements for flat foundations
Landscapes
- Engineering & Computer Science (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)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
A power transmission line assembly-type arch base and a construction method are provided. The arch base is consisted of a rigid upper plate housing and a lower flexible stay cable which are installed inside the foundation; the rigid upper plate housing is consisted of a quadrangle inner arch housing which is enclosed by four lower prefabricated unidirectional bow-shaped splints and an upper base columns; two of the four unidirectional bow-shaped splints are symmetrically arranged and are successively spliced to form an inner arch housing with a quadrangle peripheral at the bottom, a hollow inside and a quadrangle hole in the middle of the upper part.
Description
Technical field
The present invention relates to a kind of transmission line of electricity assembled arch basis and construction method, especially one kind is applied to non-rock
Soil property tower position push basis, belong to transmission line tower foundation formal technique field.
Background technology
Flexible mat foundation is the base form being used widely in the transmission line of electricity of various electric pressures.In design
When, reduce the additional stress of substrate by increasing base areas, so that basis is met and push requirement for bearing capacity, utilize basis simultaneously
And its deadweight of the overlying soil body come to undertake basis uplift force.
It is not enough to there is both sides in flexible board-like foundation main：(1) when basic role power is larger, sole plate area meeting
Larger, simultaneously because the thickness of slab of the requirement mat foundation of self-strength also can be larger, so that base concrete large usage quantity,
And now the stock utilization of basic abdominal part concrete is relatively low in fact；（2）Casting concrete wire-tie from excavating to again
To maintenance, the duration of foundation construction is longer for transmission line of electricity.
Content of the invention
It is an object of the invention to overcoming the shortcomings of that prior art exists, and provide a kind of structure simple, uniform force, jail
Gu reliable, transmission line of electricity assembled arch basis and the construction method of efficiency of construction can be improved.
The purpose of the present invention to complete by following technical solution, a kind of transmission line of electricity assembled arch basis, it
Mainly it is made up of the flexible cable that the armored concrete rigid top plate shell being arranged in ground and bottom steel strand wires are constituted, described
In the square that rigid top plate shell is enclosed by following four pieces prefabricated unidirectional cambered plates, shell is bent in bow housing and interlocking in square
In hole in the middle of body top and assemble all-in-one-piece basic stand column and constitute, described four pieces of unidirectional cambered plates are arranged symmetrically and phase two-by-two
Mutually it is spliced to form a bottom successively to be in square periphery, inner hollow and have in a square hole in top intermediate formation
Bow housing, makes the outer side wall of surrounding of interior bow housing form tapered slope wall；
Between the described unidirectional cambered plate being arranged symmetrically two-by-two, at least after steel strand wires tensioning is used respectively in upper and lower, anchor is tight simultaneously
Constitute described flexible cable, wherein top steel strand wires also extend through interlocking basic stand column bottom in middle hole.
As preferred：Described basic stand column includes a column body, and the bottom of this column body is provided with coordinating
The connection pylon of hole in the middle of bow housing upper；Described unidirectional cambered plate includes the bar blocks that bottom is placed on ground basal plane,
It is connected to surface plate obliquely above this bar blocks, and make two pieces of unidirectional cambered plates being arranged symmetrically form bosoms, outer
The interior bow housing on the tapered inclined-plane in portion；Four pieces of described unidirectional cambered plates and a basic stand column by armored concrete prefabricated and
Become；
Tight with anchor after row's steel strand wires tensioning in bottom between the described unidirectional cambered plate being arranged symmetrically, and on top with upper and lower two
After row's steel strand wires tensioning, anchor is tight.
A kind of construction method on transmission line of electricity assembled arch basis as described above, described construction method includes walking as follows
Suddenly：
Step one：First, excavate foundation according to key dimension, after finishing, squeeze in the bottom surface of ground and can play support work
Timber；
Step 2：Lift four pieces of prefabricated unidirectional cambered plates successively, be simultaneously connected with the two-way steel strand wires in tight bottom, but steel strand wires are temporary transient
Do not apply prestressing force, form bow housing in square；
Step 3：By the use of four pieces of unidirectional cambered plates as template, backfill, to the inner space of interior bow housing, tamps soil simultaneously
Body；
Step 4：Hoisting prefabricated basic stand column, the two-way steel strand wires in tensioning upper and lower part anchor are tight successively, and two ends prefabricated
Cement plaster is used outside anchorage in unidirectional cambered plate；
Step 5：The outside soil body of back filled foundation, only stays the top of basic stand column to expose on ground.
The present invention mainly changes the structural form of flexible mat foundation：Using by rigid top plate shell（Armored concrete）
With lower flexible drag-line（Steel strand wires）" arch basis " structural system of composition, adopts assembled pattern simultaneously；Consequently, it is possible to
Under load action, upper plate shell（Similar " arch " structure）The deformation tendency of horizontal direction is resisted by the tension member of lower edge, on the one hand
Significantly reduce the stress on upper plate shell top, on the other hand can mitigate the support burden of the upper plate shell both sides soil body, give full play to
The strong tensile property of steel strand wires improves overall structure stress performance, so that top bending component and bottom tension member is learnt from other's strong points to offset one's weaknesses,
Collaborative work, reaches self-balancing, and system is simple, stress is clear and definite, has given full play to the effect of two kinds of structural materials.
Push bearing capacity in order to ensure to meet basis simultaneously, during construction, the soil body of abdominal part is tamped, be processed into close
The real, foundation soil close to undisturbed soil attribute, thus basis can utilize the lower pressure of soil body transmission of abdominal part.
The invention belongs to one kind improvement to prior art, it is simple that it has a structure, uniform force, solid and reliable, can carry
The features such as high efficiency of construction.
Brief description
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the overlooking the structure diagram of the present invention.
Fig. 3 is the basic stand column generalized section of the present invention.
Fig. 4 is the unidirectional cambered plate generalized section of the present invention.
Fig. 5 is step one schematic diagram of the present invention.
Fig. 6 is the step 2 schematic diagram of the present invention.
Fig. 7 is the step 3 schematic diagram of the present invention.
Fig. 8 is the step 4 schematic diagram of the present invention.
Fig. 9 is the step 5 schematic diagram of the present invention.
Specific embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings and the specific embodiments：Fig. 1, shown in 2, of the present invention
A kind of transmission line of electricity assembled arch basis, it is mainly by the armored concrete rigid top plate shell being arranged in ground and bottom steel
The flexible cable composition that twisted wire is constituted, the four directions that described rigid top plate shell is enclosed by following four pieces prefabricated unidirectional cambered plates 1
In shape, bow housing bends in hole in the middle of housing upper and assembles all-in-one-piece basic stand column 2 in square with interlocking and constitutes, institute
Stating four pieces of unidirectional cambered plates 1 and being arranged symmetrically two-by-two and be mutually spliced to form a bottom successively is in square periphery, inner hollow
And have the interior bow housing of a square hole in top intermediate formation, make the outer side wall of surrounding of interior bow housing form tapered slope wall
11；
At least in upper and lower respectively with anchor after steel strand wires 3,4 tensionings between the described unidirectional cambered plate 1 being arranged symmetrically two-by-two
Tight and constitute described flexible cable, wherein top steel strand wires 3 also extend through interlocking basic stand column 2 bottom in middle hole.
Shown in Fig. 3, described basic stand column 2 includes a column body 21, and the bottom of this column body 21 is provided with for joining
The connection pylon 22 of hole in the middle of bow housing upper in closing；
Shown in Fig. 4, described unidirectional cambered plate 1 includes the bar blocks 12 that bottom is placed on ground basal plane, on this bar blocks 12
It is connected to surface plate 13 obliquely, and make two pieces of unidirectional cambered plates 1 formation bosoms being arranged symmetrically, outsides tapered tiltedly
The interior bow housing in face；Four pieces of described unidirectional cambered plates 1 and a basic stand column 2 are formed by armored concrete is prefabricated；
Tight with anchor after row's steel strand wires 4 tensioning in bottom between the described unidirectional cambered plate 1 being arranged symmetrically, and on top with up and down
After two row's steel strand wires 3 tensioning, anchor is tight.
A kind of construction method on described transmission line of electricity assembled arch basis, described construction method comprises the steps：
Step one：First, excavate foundation according to key dimension, after finishing, squeeze in the bottom surface of ground and can play support work
Timber, as shown in Figure 5；
Step 2：Lift four pieces of prefabricated unidirectional cambered plates successively, be simultaneously connected with the two-way steel strand wires in tight bottom, but steel strand wires are temporary transient
Do not apply prestressing force, form bow housing in square, as shown in Figure 6；
Step 3：By the use of four pieces of unidirectional cambered plates as template, backfill, to the inner space of interior bow housing, tamps soil simultaneously
Body, as shown in Figure 7；
Step 4：Hoisting prefabricated basic stand column, the two-way steel strand wires in tensioning upper and lower part anchor are tight successively, and two ends prefabricated
Cement plaster is used, as shown in Figure 8 outside anchorage in unidirectional cambered plate.
Step 5：The outside soil body of back filled foundation, only stays the top of basic stand column to expose on ground, as shown in Figure 9.
" assembled arch basis " of the present invention is by rigid top plate shell（Armored concrete）With lower flexible drag-line（Steel
Twisted wire）Composition, wherein rigid top plate case member is made up of five pre-constructed units, and each part is connected by top drag-line each other；
Described rigid top plate shell is by five precast concrete part composing plate shells, Main Function be under the foundation pressure after will
The compressive stress that load passes to foundation soil and undertakes basic top.
Described lower flexible drag-line be rigid top plate shell bottom connect steel strand wires, bidirectional arrangements, its act as to
The tension of anti-basic infrastructure.
Described pre-constructed unit, respectively prefabricated foundation pillar partses, i.e. basic stand column and precoated plate case member, i.e. unidirectional
Cambered plate, it is concrete prefabricated element, and has reserved anchorage at drag-line position when prefabricated.
Described top flexible cable is the steel strand wires connecting on rigid top plate shell top, bidirectional arrangements.
Embodiment：The composition form on assembled arch of the present invention basis is：
Assembled arch basis is made up of six parts, respectively pillar partses（Basic stand column）, four plate case members（Unidirectional bow
Shape plate）And drag-line part.
（1）Pillar partses（Basic stand column）：Pillar partses are column body and lower panel support（Connect pylon）Pre-manufactured steel
Reinforced concrete component, simultaneously foundation bolt also prefabricated wherein, as shown in Figure 3.
（2）Plate case member（Unidirectional cambered plate）：This plate case member is four pieces of inclined plane parts, i.e. of arch basis upper board shell
Unidirectional cambered plate, the anchorage also prefabricated bottom thereon of drag-line, as shown in Figure 4.
（3）Drag-line part（Steel strand wires）It is contemplated that subsoil water etching problem, drag-line is using epoxy coating steel strand wires, steel strand
Line one end is first anchored by pre-buried anchorage, and it is tight that other end carries out after tensioning anchor again using jack after passing through anchorage.
（4）Each unit construction：This arch assembling type base connects combination part and is predominantly located at two positions：（1）Top
Use prestressed cable anchor tight between pillar partses and plate case member；（2）The two of lower panel case member symmetrically unidirectional cambered plate difference
Tight with prestressed cable anchor.Concrete combination is as shown in Figure 2.
2. construction process：The construction main flow on assembled arch basis is as described below：
Step one：First, after finishing according to key dimension excavation, squeeze into timber in ground.The effect of timber is, basic components
Play a supporting role, as shown in Figure 5 during assembly.
Step 2：Lifting part is unidirectional cambered plate successively, is simultaneously connected with tight bottom bidirectional cable（Steel strand wires）, but drag-line
Temporarily do not apply prestressing force, as shown in Figure 6.
Step 3：By the use of four pieces of unidirectional cambered plates as template, backfill to inner space, tamp the soil body, timber simultaneously
Do not need to extract, timber can indirectly strengthen and pushes bearing capacity, but do not consider, as shown in Figure 7 when calculating.
Step 4：Lifting basic stand column, tensioning upper and lower part bidirectional cable anchor are tight successively, and use outside the anchorage of two ends
Cement plaster, as shown in Figure 8.
Step 5：The outside soil body of back filled foundation, as shown in Figure 9.
Claims (3)
1. a kind of transmission line of electricity assembled arch basis, it mainly by the armored concrete rigid top plate shell being arranged in ground and
The flexible cable that bottom steel strand wires are constituted forms it is characterised in that described rigid top plate shell is by following four pieces prefabricated unidirectional arch
In the square that plate encloses, bow housing and interlocking are bent in hole in the middle of housing upper in square and are assembled all-in-one-piece base
Plinth column is constituted, and described four pieces of unidirectional cambered plates are arranged symmetrically two-by-two and are mutually spliced to form a bottom successively is in outside square
Enclose, inner hollow have the interior bow housing of a square hole in top intermediate formation, make the outer side wall shape of surrounding of interior bow housing
Tapered beveled walls；
Between the described unidirectional cambered plate being arranged symmetrically two-by-two, at least after steel strand wires tensioning is used respectively in upper and lower, anchor is tight simultaneously
Constitute described flexible cable, wherein top steel strand wires also extend through interlocking basic stand column bottom in middle hole.
2. transmission line of electricity assembled arch basis according to claim 1 is it is characterised in that described basic stand column includes
One column body, the bottom of this column body is provided with the connection pylon for coordinating hole in the middle of interior bow housing upper；Described
Unidirectional cambered plate includes the bar blocks that bottom is placed on ground basal plane, is connected to surface plate obliquely on this bar blocks, and
Two pieces of unidirectional cambered plates being arranged symmetrically are made to form bosom, the interior bow housing on outside tapered inclined-plane；Four pieces of described lists
Form to cambered plate and a basic stand column by armored concrete is prefabricated；
Tight with anchor after row's steel strand wires tensioning in bottom between the described unidirectional cambered plate being arranged symmetrically, and on top with upper and lower two
After row's steel strand wires tensioning, anchor is tight.
3. a kind of construction method on transmission line of electricity assembled arch as claimed in claim 1 or 2 basis is it is characterised in that described
Construction method comprises the steps：
Step one：First, excavate foundation according to key dimension, after finishing, squeeze in the bottom surface of ground and can play support work
Timber；
Step 2：Lift four pieces of prefabricated unidirectional cambered plates successively, be simultaneously connected with the two-way steel strand wires in tight bottom, but steel strand wires are temporary transient
Do not apply prestressing force, form bow housing in square；
Step 3：By the use of four pieces of unidirectional cambered plates as template, backfill, to the inner space of interior bow housing, tamps soil simultaneously
Body；
Step 4：Hoisting prefabricated basic stand column, the two-way steel strand wires in tensioning upper and lower part anchor are tight successively, and two ends prefabricated
Cement plaster is used outside anchorage in unidirectional cambered plate；
Step 5：The outside soil body of back filled foundation, only stays the top of basic stand column to expose on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503568.4A CN106436734B (en) | 2016-07-01 | 2016-07-01 | A kind of transmission line of electricity assembled arch basis and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503568.4A CN106436734B (en) | 2016-07-01 | 2016-07-01 | A kind of transmission line of electricity assembled arch basis and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106436734A true CN106436734A (en) | 2017-02-22 |
| CN106436734B CN106436734B (en) | 2018-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610503568.4A Active CN106436734B (en) | 2016-07-01 | 2016-07-01 | A kind of transmission line of electricity assembled arch basis and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106436734B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241840A (en) * | 2019-06-06 | 2019-09-17 | 浙江华云电力工程设计咨询有限公司 | A kind of premade shells Screw Anchor composite foundation and construction method |
| CN112482345A (en) * | 2020-11-30 | 2021-03-12 | 上海宝冶冶金工程有限公司 | Method and structure for improving bearing capacity of natural foundation |
-
2016
- 2016-07-01 CN CN201610503568.4A patent/CN106436734B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241840A (en) * | 2019-06-06 | 2019-09-17 | 浙江华云电力工程设计咨询有限公司 | A kind of premade shells Screw Anchor composite foundation and construction method |
| CN112482345A (en) * | 2020-11-30 | 2021-03-12 | 上海宝冶冶金工程有限公司 | Method and structure for improving bearing capacity of natural foundation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106436734B (en) | 2018-11-20 |
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