CN104499501A - Narrow-foundation-tower single-pile pier-type self-stabilized foundation for power transmission line - Google Patents
Narrow-foundation-tower single-pile pier-type self-stabilized foundation for power transmission line Download PDFInfo
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- CN104499501A CN104499501A CN201410742858.5A CN201410742858A CN104499501A CN 104499501 A CN104499501 A CN 104499501A CN 201410742858 A CN201410742858 A CN 201410742858A CN 104499501 A CN104499501 A CN 104499501A
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- transmission line
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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
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
- E02D2300/0034—Steel; Iron in wire form
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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)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a narrow-foundation-tower single-pile pier-type self-stabilized foundation for a power transmission line. The narrow-foundation-tower single-pile pier-type self-stabilized foundation for the power transmission line comprises a single-pile foundation, a pier platform and small upright columns (11), wherein the upper end of a single pile is inserted into the center of the pier platform; the small upright columns (11) are positioned on the upper end surface of the pier platform; four independent tower leg upright columns of a narrow foundation tower are buried onto one pier platform; the pier platform is supported by the single-pile foundation buried inside soil; acting forces of four tower legs which are essentially not related to one another act on one point, and through mutual counteraction, a self-balancing aim is achieved; the conventional four independent foundations are changed into one self-stabilized single-pile foundation, so that the occupied area is obviously reduced, the cost of the foundation is reduced; the construction technology is simple, the construction period is significantly shortened, and the narrow-foundation-tower single-pile pier-type self-stabilized foundation is more safe and convenient.
Description
Technical field
The present invention relates to a kind of from steady basis, be specifically related to a kind of transmission line of electricity narrow base tower single pile pier formula from steady basis.
Background technology
At present, get more and more at city planning area inner high voltage line, and line corridor is also more and more nervous, common steel tower can not meet city high-voltage line and take up an area few requirement, and general employing three kinds of modes reduce urban land, i.e. steel pipe pole, cable pipe laying and narrow base tower.
Steel pipe pole service condition is higher than steel tower, and group needs big machinery immediately, and high to job site environmental requirement, later maintenance is relatively inconvenient; The investment of cable pipe laying is large, and too many by the restriction of the factor such as underground pipeline, river, the later stage overhauls also relative difficulty; Existing plain edition steel tower is equally processed, transport, easy to assembly, there is again the rootlet of the features such as occupation of land is little, passage is narrower to open narrow base tower simultaneously, more and more be subject to the favor of power supply department, narrow base tower is economical reliable with it, bulk-breaking transport, processing the advantage such as easy for installation, to become city transmission line of electricity high-voltage line erection first-selected.
Narrow base tower belongs to compact tower, and its height root is opened and opened only about 2m than reaching 10 or higher, 110kV narrow base tower least root.The foundation pattern that narrow base tower routine adopts is mainly heavy excavation commbined foundations or bored concrete pile foundation.Heavy excavation commbined foundations are a kind of natural grounds, but need to excavate on a large scale, comparatively large on urban operating mechanism impact in city construction, and higher to Geological Condition Requirement, seldom use, general main employing pile foundation pattern; Common filling pile basis configures pile foundation separately under narrow base tower four tower legs, and calculating is pulled out on should meeting in separate basis, and meet again and press down calculating, the basis configured is larger.Particularly for the tangent tower that load is less, from unnecessary requirement for bearing capacity, but in order to the needs of satisfied structure and construction, have to design the stake footpath of large-size, very uneconomical on engineer applied; City network of underground gathers in addition, and the independent pile foundation of complex ground four leg often can not be arranged any more, and relocating easily detours or move changes underground utilities, for this reason usually because the obstacle at a place, also pays very large construction cost.
Therefore need to provide a kind of novel narrow base tower foundation pattern, city can be saved and take up an area resource, increase economic efficiency.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of transmission line of electricity narrow base tower single pile pier formula from steady basis, described pier formula comprises single-pile foundation, pier, post from steady basis;
Preferably, described single-pile foundation is made up of single pile and the main muscle of single pile, and the main muscle of described single pile is vertically fixed on the external surface of described single pile;
Preferably, that described single pile is directly 1m-1.8m;
Preferably, described pier is circular pier.
Preferably, the diameter of described circular pier is not more than 2.5m, and thickness is 0.5m-1m.
Preferably, described pier external surface is provided with pier reinforcing bar, and described pier reinforcing bar is fixed on the external surface of described pier and is connected as a single entity with the main muscle of described single pile.
Preferably, described post also comprises column reinforcing bar and stone bolt, and described column reinforcing bar is fixed on the external surface of described post and is connected as a single entity with described pier reinforcing bar.
Preferably, described post is four, to be in 90 °ly evenly fixed on described circular pier with the center of circle of described circular pier is mutual.
Preferably, square or the circle of described post to be width or diameter be 0.6m-1m.
Preferably, the height of described post is no more than 1m.
Preferably, described single-pile foundation is transmission line tower foundation, and it comprises: the digging foundation that same vertical direction is arranged from top to bottom and Rock Embed based; Described digging foundation and Rock Embed based and which is provided with the rebar cylinder mould build-in global formation of stone bolt.
Preferably, described digging foundation is made up of the basic chassis of cylindrical basic principal post and truncated cone-shaped; Surface layer is exposed on described basic principal post top, and bottom, basic chassis connects the Rock Embed based of circular platform type.
Preferably, described stone bolt from top to bottom through digging foundation and Rock Embed based and rebar cylinder mould inner.
Preferably, the length of described stone bolt is greater than the height sum of digging foundation and Rock Embed based, and stone bolt top is provided with packing ring, locking nut and concrete enclosing cap, and bottom is provided with crotch or is welded with anchor slab.
Preferably, described rebar cylinder mould is made up of the main muscle of vertical direction, horizontal direction outer ring stirrup and horizontal direction inner ring stirrup.
Preferably, rebar cylinder mould be by the described main muscle of vertical direction and the outer ring stirrup of horizontal direction and inner ring stirrup form cylindrical; Described main muscle is evenly arranged between a described outer ring stirrup and inner ring stirrup
Beneficial effect of the present invention is:
A kind of transmission line of electricity narrow base tower single pile pier formula provided by the present invention changes the design concept on single leg list basis in the past from steady basis, according to equilibrium of forces principle, the uplift force of single pile is pressed down power and offsets, single pile only bears overturning moment and less downforce, uplift force becomes the internal force of circular pier, under the collaborative work of ground, above pull out calculate can be reduced to footing beam by curved calculating, this foundation pattern itself has again good integrity, feature that opposing horizontal movement ability is strong.Economically, 4 tower leg bases are reduced to 1 single pile from steady basis, obviously reduce floor space, reduce foundation cost, and construction technology are simple, significantly shorten the construction period, more safe ready.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural representation of transmission line of electricity narrow base tower single pile pier formula of the present invention from steady basis;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is the front view of transmission line of electricity narrow base tower single pile pier formula of the present invention single-pile foundation in steady basis;
Fig. 4 is A-A sectional view in Fig. 3;
Fig. 5 is B-B sectional view in Fig. 3;
Fig. 6 is the rebar cylinder mould structural representation of transmission line tower foundation in Fig. 3
Description of reference numerals: the circular pier 33-single pile 44-stone bolt 55-single pile of 11-post 22-main muscle 66-column reinforcing bar 77-pier reinforcing bar 1 digging foundation, 1-1 basis principal post, chassis, 1-2 basis, 2 Rock Embed based, 3 stone bolt, 3-1 crotch, 4 rebar cylinder moulds, the main muscle of 4-1,4-2 outer ring stirrup, 4-3 inner ring stirrup, 5 concrete enclosing caps
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
In order to thoroughly understand the embodiment of the present invention, by following description, detailed structure is proposed.Obviously, the execution of the embodiment of the present invention is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present invention is described in detail as follows, but except these are described in detail, the present invention can also have other embodiments.
See figures.1.and.2, Fig. 1 is the structural representation of transmission line of electricity narrow base tower single pile pier formula of the present invention from steady basis; Fig. 2 is the A-A sectional view in Fig. 1.The certainly steady basis of a kind of transmission line of electricity narrow base tower single pile pier formula shown in figure, for the narrow base tower of below transmission line of electricity 220kV, described pier formula comprises single-pile foundation, pier, post 11 from steady basis.
Single-pile foundation: described single-pile foundation is made up of single pile 33 and the main muscle 55 of single pile, the main muscle of described single pile 55 is vertically fixed on the external surface of described single pile 33, resists by the concrete pile foundation part be embedded in the soil body load such as overturning moment, downforce, moment of torsion that top steel tower transmits; The main muscle 55 of single pile of single-pile foundation gos deep in pier, connects as one, bear the load that pier transmits with the pier reinforcing bar 77 in pier; Single pile pile body diameter is generally 1m ~ 1.8m, buried depth is not more than 4m ~ 8m.
Circular pier: be circular pier 22 and post 11 shown in Fig. 2, pier reinforcing bar 77 is fixed on the external surface of circular pier 22 and is connected as a single entity with the main muscle 55 of single pile, 4 posts and single-pile foundation are connected as a single entity, the vertical load of narrow base tower tower leg under the operating modes such as different strong wind, ice and snow is mutually balanced, offsets, bear the moment of flexure that part 44 tower leg horizontal loadings produce, fractional load is passed to single pile 55; The diameter of circular pier 22 is not more than 2.5m, and thickness is 0.5m-1m.
First circular pier 22 bears the tower load from post 11, then can effectively resist its moment of torsion by circular pier 22 self, then by load gradually transition be transferred on single-pile foundation.
Post 11 also comprises column reinforcing bar 66 and stone bolt 44, and column reinforcing bar 66 is fixed on the external surface of post 11 and is connected as a single entity with described pier reinforcing bar 77; Post 11 is four, in 90 °ly evenly be fixed on described circular pier 22 with the center of circle of described circular pier 22 is mutual, the tower leg of narrow base tower is connected with the stone bolt 44 imbedded in 4 posts 11, the load of narrow base tower is made to be passed on post 11, post 11 is just connected together with pile body by circular pier 22, and integral rigidity is strong; Post 11 mainly bears top tower load, load is passed to circular pier 22; Post 11 is square or circular, and width or diameter are 0.6m ~ 1m, are highly no more than 1m.
Single pile pier formula is with the construction method difference of conventional pole and tower foundation from the steady construction method on basis: construct simply, to need one piece to build shaping; pile body carries out the protection of retaining wall formwork as required; upper circular pier and post need colligation formwork, and entirety needs one-time-concreting concrete formation.
Single pile pier formula comprises from the main construction sequence on steady basis: single pile excavates: foundation ditch diameter 1.2m, foundation depth 6m, and excavation of foundation pit can adopt manually to draw to dig and revolve with machinery modes such as digging, needs retaining wall to prevent hole wall from caving in if desired; Circular pier and post formwork: circular pier diameter 5.4m, pier height 0.5m, adopt steel pile casting or wooden form to carry out formwork around; Column is of a size of the square column of top 0.4m, bottom 0.6m, height 0.9m, and formwork adopts wooden form; Single pile, pier and post assembling reinforcement: according to diagram requirement, colligation single pile reinforcing cage, pier and column reinforcing bar; Stone bolt is laid: the HRB400 hot-rolled reinforced bar of 4 diameter 36mm, is placed in post by design drawing colligation; One-time-concreting is shaping: after formwork, assembling reinforcement, builds C30 concrete, adopts one-time-concreting molding mode; Maintenance: water seasoning 28 days, shaping.
Further, single-pile foundation is selected see shown in Fig. 3, Fig. 4 and Fig. 5, embodiments provide a kind of foundation structure of electric power line pole tower, this basis at least comprises: digging foundation 1, Rock Embed based 2, stone bolt 3, rebar cylinder mould 4, concrete protective cap 5 etc.; Covered by argillic horizon on earth's surface, under cover for severely-weathered or medium weathering rock stratum geological conditions under adopt digging foundation 1 and Rock Embed based 2 to combine foundation structure, realize at the higher transmission line tower foundation such as enforcement super-pressure, extra-high voltage of this kind of regional extraction-resistant behavior.
Particularly, as preferably, described digging foundation 1 and Rock Embed based 2 are coagulated by stone bolt 3 and rebar cylinder mould 4 build-in and are integrated, adopt the overall build-in of concrete one-time-concreting shaping, wherein, digging foundation 1 is positioned at surface clay layer, and Rock Embed based 2 is positioned at severely-weathered or medium weathering rock stratum; Described digging foundation 1 is made up of basic principal post 1-1 and basic chassis 1-2, wherein, basis principal post 1-1 is cylinder, basis chassis 1-2 is circular platform type, the top of described basic principal post 1-1 is exposed surface clay layer and is covered, bottom connects the basic chassis 1-2 of circular platform type, and the bottom of basic chassis 1-2 connects the Rock Embed based 2 of circular platform type.
Particularly, as preferably, the top of described basic principal post 1-1 is inserted with many stone bolt 3, is preferably four, and it is different and change that each root stone bolt 3 exposes the specification of the value range base area foot bolt 3 of basic principal post 1-1, and its species range is 200-400mm; Stone bolt 3 top is provided with packing ring and locking nut, has assembled the shaping concrete enclosing cap 5 of rear employing concreting, in order to protecting field foot bolt 3 and securing member; The length of described stone bolt 3 is greater than the height sum of digging foundation 1 and Rock Embed based 2, stone bolt 3 from top to bottom through digging foundation 1 and Rock Embed based 2 and rebar cylinder mould 4 inner, stone bolt 3 bottom is provided with crotch 3-1 or is welded with anchor slab, to strengthen anchoring effect.
Simultaneously shown in Figure 6, particularly, described rebar cylinder mould 4 is by some main muscle 4-1, and several outer rings stirrup 4-2 and several inner ring stirrups 4-3 is formed; The main muscle 4-1 of each root described is longitudinally arranged along Y-axis, and described each outer ring stirrup 4-2 and each inner ring stirrup 4-3 is along X-axis horizontally set; Some main muscle 4-1 are circumferentially uniformly distributed, and several outer rings stirrup 4-2 and several inner ring stirrups 4-3 is along Y-axis longitudinal arrangement; The main muscle 4-1 of described circumferentially each root equally distributed is evenly arranged between each outer ring stirrup 4-2 and each inner ring stirrup 4-3, described each outer ring stirrup 4-2 and each inner ring stirrup 4-3 is along each upper and lower vertical arrangement of main muscle 4-1, interval is even, be pad with each main muscle 4-1 contact point, and be welded to each other together, form the netted rebar cylinder mould 4 of cylinder thus; The height of described rebar cylinder mould 4 is greater than the height of digging foundation 1, rebar cylinder mould 4 is from top to bottom in digging foundation 1 and to extend to Rock Embed based 2 inner, together with being mounted in Rock Embed based 2 by concreting and digging foundation 1, the design height scope inserted bottom described rebar cylinder mould 4 in Rock Embed based 2 is 600-1300mm, embedded depth of foundation 3m.
A kind of transmission line of electricity narrow base tower single pile pier formula disclosed by the invention is from steady basis, four of narrow base tower independent tower leg columns are embedded on circular pier, pier is supported by the single-pile foundation be embedded in the soil body, four are allowed originally not have associated tower leg active force to act on a point, cancel out each other by allowing it and reach the object of Equilibrium, 4 traditional isolated foundations are made to become 1 from steady single-pile foundation, obviously reduce floor space, reduce foundation cost, and construction technology is simple, significantly shorten the construction period, more safe ready.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims awaited the reply.
Claims (16)
1. a transmission line of electricity narrow base tower single pile pier formula is from steady basis, it is characterized in that, described pier formula comprises single-pile foundation, pier, post (11) from steady basis, the upper end of described single pile is inserted into the center of described pier, and described post (11) is fixed on the upper surface of described pier.
2. transmission line of electricity narrow base tower single pile pier formula according to claim 1 is from steady basis, it is characterized in that, described single-pile foundation is made up of single pile (33) and the main muscle of single pile (55), and the main muscle of described single pile (55) is vertically fixed on the external surface of described single pile (33).
3. transmission line of electricity narrow base tower single pile pier formula according to claim 2 is from steady basis, and it is characterized in that, the diameter of described single pile (33) is 1m-1.8m.
4. transmission line of electricity narrow base tower single pile pier formula according to claim 2 is from steady basis, and it is characterized in that, described pier is circular pier (22).
5. transmission line of electricity narrow base tower single pile pier formula according to claim 3 is from steady basis, and it is characterized in that, the diameter of described circular pier (22) is not more than 2.5m, and thickness is 0.5m-1m.
6. transmission line of electricity narrow base tower single pile pier formula according to claim 4 is from steady basis, it is characterized in that, described pier external surface is provided with pier reinforcing bar (77), and described pier reinforcing bar (77) is fixed on the external surface of described pier and is connected as a single entity with the main muscle of described single pile (55).
7. transmission line of electricity narrow base tower single pile pier formula according to claim 6 is from steady basis, it is characterized in that, described post (11) comprises column reinforcing bar (66) and stone bolt (44), and described column reinforcing bar (66) is fixed on the external surface of described post (11) and is connected as a single entity with described pier reinforcing bar (77).
8. transmission line of electricity narrow base tower single pile pier formula according to claim 7 is from steady basis, it is characterized in that, described post (11) is four, and the center of circle of its center of circle and described circular pier (22) is mutual to be in 90 °ly evenly fixed on described circular pier (22).
9. transmission line of electricity narrow base tower single pile pier formula according to claim 1 is from steady basis, it is characterized in that, described post (11) for width or diameter be square or the circle of 0.6m-1m.
10. transmission line of electricity narrow base tower single pile pier formula according to claim 1 is from steady basis, and it is characterized in that, the height of described post (11) is no more than 1m.
11. transmission line of electricity narrow base tower single pile pier formulas according to claim 1 are from steady basis, it is characterized in that, described single-pile foundation is transmission line tower foundation, and it comprises: the digging foundation (1) that same vertical direction is arranged from top to bottom and Rock Embed based (2); Described digging foundation (1) and Rock Embed based (2) and rebar cylinder mould (4) the build-in global formation which is provided with stone bolt (3).
12. transmission line of electricity narrow base tower single pile pier formulas according to claim 11 are from steady basis, and it is characterized in that, described digging foundation (1) is made up of the basic chassis (1-2) of cylindrical basic principal post (1-1) and truncated cone-shaped; Surface layer is exposed on described basic principal post (1-1) top, and basic chassis (1-2) bottom connects the Rock Embed based (2) of circular platform type.
13. transmission line of electricity narrow base tower single pile pier formulas according to claim 12 are from steady basis, it is characterized in that, described stone bolt (3) from top to bottom through digging foundation (1) and Rock Embed based (2) and rebar cylinder mould (4) inner.
14. transmission line of electricity narrow base tower single pile pier formulas according to claim 12 are from steady basis, it is characterized in that, the length of described stone bolt (3) is greater than the height sum of digging foundation (1) and Rock Embed based (2), stone bolt (3) top is provided with packing ring, locking nut and concrete enclosing cap (5), and bottom is provided with crotch (3-1) or is welded with anchor slab.
15. transmission line of electricity narrow base tower single pile pier formulas according to claim 11 are from steady basis, it is characterized in that, described rebar cylinder mould (4) is made up of the main muscle (4-1) of vertical direction, horizontal direction outer ring stirrup (4-2) and horizontal direction inner ring stirrup (4-3).
16. transmission line of electricity narrow base tower single pile pier formulas according to claim 15 are from steady basis, it is characterized in that, rebar cylinder mould (4) is cylindrical for what be made up of the described main muscle (4-1) of vertical direction and the outer ring stirrup (4-2) of horizontal direction and inner ring stirrup (4-3); Described main muscle (4-1) is evenly arranged between a described outer ring stirrup (4-2) and inner ring stirrup (4-3).
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| CN201410742858.5A CN104499501B (en) | 2014-12-08 | 2014-12-08 | Narrow-foundation-tower single-pile pier-type self-stabilized foundation for power transmission line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301433A (en) * | 2018-01-29 | 2018-07-20 | 中国电力科学研究院有限公司 | A kind of composite foundation and construction method of shaft tower |
| CN110778123A (en) * | 2019-11-11 | 2020-02-11 | 福建省福乾建设发展有限公司 | Concrete reinforcement binding construction method |
| CN113737807A (en) * | 2021-08-12 | 2021-12-03 | 广东地山基础工程有限公司 | Combined supporting device and method for foundation pit slope boulder |
| CN114250778A (en) * | 2020-09-23 | 2022-03-29 | 国网山西电力勘测设计研究院有限公司 | Method for anchoring middle anti-pulling ring electric tower foundation pit |
| CN114525806A (en) * | 2022-03-31 | 2022-05-24 | 四川电力设计咨询有限责任公司 | Iron tower single-pile combined foundation and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108301433A (en) * | 2018-01-29 | 2018-07-20 | 中国电力科学研究院有限公司 | A kind of composite foundation and construction method of shaft tower |
| CN110778123A (en) * | 2019-11-11 | 2020-02-11 | 福建省福乾建设发展有限公司 | Concrete reinforcement binding construction method |
| CN110778123B (en) * | 2019-11-11 | 2021-08-27 | 福建省福乾建设发展有限公司 | Concrete reinforcement binding construction method |
| CN114250778A (en) * | 2020-09-23 | 2022-03-29 | 国网山西电力勘测设计研究院有限公司 | Method for anchoring middle anti-pulling ring electric tower foundation pit |
| CN113737807A (en) * | 2021-08-12 | 2021-12-03 | 广东地山基础工程有限公司 | Combined supporting device and method for foundation pit slope boulder |
| CN114525806A (en) * | 2022-03-31 | 2022-05-24 | 四川电力设计咨询有限责任公司 | Iron tower single-pile combined foundation and construction method thereof |
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| CN104499501B (en) | 2017-02-22 |
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