CN104358272B - A kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure - Google Patents
A kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure Download PDFInfo
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- CN104358272B CN104358272B CN201410727071.1A CN201410727071A CN104358272B CN 104358272 B CN104358272 B CN 104358272B CN 201410727071 A CN201410727071 A CN 201410727071A CN 104358272 B CN104358272 B CN 104358272B
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- bracing wire
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- shaped stay
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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 extra-high voltage single-column Guywire tower V-type bracing wire foundation structure, the king-post comprising bracing wire and connected by bracing wire and some foundation structure main bodys, each foundation structure main body comprises base plate, be fixed on the inclination principal post of plate top surface, one end is imbedded the inclination principal post other end and is exposed the U-shaped stay rod of inclination principal post end face and be fixed on the triangle yoke plate of U-shaped stay rod bared end, described bracing wire is fixed on triangle yoke plate, each foundation structure main body and the bracing wire being connected two V-shaped layouts between king-post, described U-shaped stay rod is in the internal bend of inclination principal post, the geometric center line parallel of hypomere broken line and inclination principal post, the plane parallel at two bracing wire places in the foundation structure main body at epimere broken line and its place.The present invention can coordinate V-type bracing wire arrangement to use well, not only meets the load bearing requirements of extra-high voltage Guywire tower, reduces basic quantity, and pattern is simple, is easy to realize.
Description
Technical field
The invention belongs to transmission line of electricity Guywire tower technical field, be specifically related to a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure.
Background technology
UHV transmission line, refers to that electric pressure is at 1000kV and above transmission line of alternation current and ± 800kV and above DC power transmission line.At present, UHV TRANSMISSION LINES IN CHINA engineering mainly adopts self-supporting tower to carry out overhead power transmission, Guywire tower there is no the example being applied to extra-high voltage project within the border in China, but because Guywire tower can be saved great deal of steel, can produce obvious economic benefit in the use of open flat country, therefore in extra-high voltage project, there is wide application prospect.
Guywire tower is a kind of special construction pattern of electric power line pole tower, the tower body body be generally made up of lattice king-post and tower head and by steel strand be connected gold utensil make bracing wire jointly form.Single-column Guywire tower is the Guywire tower be made up of single lattice king-post and some bracing wires.Traditional span wire system is four bracing wire arrangements, also employing eight bracing wire arrangement is had, V-type bracing wire arrangement is preferably a kind of in eight bracing wire layout patterns, the upper end of its each group V-type bracing wire connects the same side of king-post, lower end is drawn in guyed foundation end face, it decreases guyed foundation quantity while meeting Guywire tower force request, has good economy.
V-type bracing wire will give full play to its advantage need coordinate employing V-type guyed foundation.Conventional pull wires basis is normal adopts cable quadrant or single stay inclination concrete foundation, its foundation structure and gold utensil tectonic type cannot meet the instructions for use of V-type bracing wire, therefore, exploitation is applicable to the foundation structure of extra-high voltage single-column Guywire tower V-type bracing wire arrangement is technical problem urgently to be resolved hurrily.
Summary of the invention
In order to overcome the defect that above-mentioned prior art exists, the object of the present invention is to provide a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure, the present invention can coordinate V-type bracing wire arrangement to use well, not only meet the load bearing requirements of extra-high voltage Guywire tower, reduce basic quantity, and pattern is simple, be easy to realize.
For achieving the above object, the present invention adopts following technical scheme:
A kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure, the king-post comprising bracing wire and connected by bracing wire and some foundation structure main bodys, each foundation structure main body comprises base plate, be fixed on the inclination principal post of plate top surface, one end is exposed the inclination principal post end face other end and is imbedded the U-shaped stay rod of inclination principal post and be fixed on the triangle yoke plate of U-shaped stay rod bared end, the bared end of U-shaped stay rod is U-shaped elbow end, described bracing wire is fixed on triangle yoke plate, each foundation structure main body and the bracing wire being connected two V-shaped layouts between king-post, described base plate and inclination principal post composition steel concrete overall structure, base plate is taper type, inclination principal post is constant dimension column, the incline direction of inclination principal post and bracing wire is consistent but angle of inclination is different, described U-shaped stay rod is in the internal bend of inclination principal post, the geometric center line parallel of hypomere broken line and inclination principal post, the plane parallel at two bracing wire places in the foundation structure main body at epimere broken line and its place.
Further, king-post is rectangular structure and its cross section is square, four sides corresponding foundation structure main body respectively of king-post, each side of king-post connects the bracing wire of two V-shaped layouts, and the bottom of V-stay is drawn in and is connected on the triangle yoke plate in corresponding foundation structure main body.
Further, bottom surface and the end face of base plate are square, and the bottom surface length of side is 3900mm, and the edge thickness of base plate is 350mm, and interior thickness is 700mm.
Further, the cross section of inclination principal post is square, and the length of side of cross section is 1200mm, and in use, foundation structure main body embedded depth is 3800mm, and the height that earth's surface is exposed on its top is 200mm.
Further, each inclination principal post is arranged side by side two U-shaped stay rods, the length that two U-shaped stay rods imbed inclination principal post is 1480mm, and the length exposing inclination principal post is 300mm, and the length of the hypomere broken line of two U-shaped stay rods is 700mm.
Further, the geometric center lines of inclination principal post and the angle of horizontal plane are 76 °; The epimere broken line of U-shaped stay rod and the angle of horizontal plane are 50 °, and the epimere broken line of U-shaped stay rod and the angle of horizontal plane equal the angle of bracing wire and horizontal plane.
Further, the minimum range >=200mm on rear side of the hypomere broken line of two U-shaped stay rods and inclination principal post between inclined plane, the epimere broken line of two U-shaped stay rods and the intersection point of inclination principal post end face are positioned at end face intermediate vertical on the axis of symmetry of side.
Further, two projections of U-shaped stay rod on the inclined plane of inclination principal post are symmetrical about the longitudinal centre line on inclined plane, and the axis angle of two U-shaped stay rods is 4 °, the intersection point of respective axis and inclination principal post end face is 250mm to the distance of inclination principal post end face geometric center.
Further, the lower end of each U-shaped stay rod all arranges anchor measure, described anchor measure comprises an anchor slab connected together the lower end of U-shaped stay rod and is fixed on six nuts of anchor slab both sides, and the upper end of two U-shaped stay rods is provided with the shared location-plate that can be fixed the two.
Further, the top of each U-shaped stay rod is all fixed with triangle yoke plate, each triangle yoke plate is provided with three bolts hole, and one of them bolt hole is used for penetrating U-shaped stay rod, and two other bolt hole is used for connecting stay wire.
Compared with prior art, the present invention has following useful technique effect:
In the present invention, the steel concrete overall structure of base plate and inclination principal post composition is batter post expansion adagio basis conventional in transmission line of electricity, there are good resistance to plucking load-carrying properties, in flat country, it is one of foundation pattern of economy the most, U-shaped stay rod is in the internal bend of inclination principal post, in polyline shaped, the geometry axis parallel of hypomere broken line and described inclination principal post, U-shaped stay rod is made to be easier to downward power transmission, epimere broken line and V-type bracing wire place plane parallel, avoid U-shaped stay rod eccentric force.
Layout pattern of the present invention fully combines the engineering characteristic of Guywire tower, and because Guywire tower is mainly used in flat country, base plate have employed the superior large template formula of extraction-resistant behavior, utilizes the heavy resistance to plucking of soil, and have employed heavy excavation construction technology, meet mechanized construction requirement; Simultaneously, due to bracing wire, angle is less over the ground, and horizontal component is comparatively large, adopts inclination principal post farthest can reduce the adverse effect of horizontal force to foundation structure, and by imbedding the specific degree of depth, with resist bracing wire on pull out effect, meanwhile, when base plate bears and pulls out effect, moment of flexure suffered by edge section and shearing less, and the moment of flexure of middle part section and shearing are comparatively large, thick middle are set, the taper type base plate of thin edge just in time adapts to this force modes, thus save basic material amount.The present invention by rationally arranging two U-shaped stay rods and triangle yoke plate thereof on an inclination principal post, two bracing wires be connected with king-post diverse location are connected to foundation structure main body end face simultaneously, reach to connect on same foundation main structure body two " suitable for reading wide, end opening is narrow, V-shaped " object of bracing wire, thus decrease foundation structure main body quantity.
Inclination principal post of the present invention is constant dimension column, and the geometric center lines of inclination principal post and the intersection point of taper type base plate bottom surface are positioned at its bottom center, farthest eliminates the adverse effect of base plate eccentric force; Simultaneously, the angle of inclination principal post axial line and horizontal plane is greater than bracing wire and horizontal plane angle, be convenient to base configuration and construction, the epimere broken line of U-shaped stay rod and the intersection point of inclination principal post square top surface are positioned at end face intermediate vertical on the axis of symmetry of side, and two projections of U-shaped stay rod on the inclined plane of inclination principal post are symmetrical about the center line on described inclined plane, farthest reduce the adverse effect that two stay rods produce the eccentric pulling force effect of principal post.
Structure main purpose of the present invention adopts triangle yoke plate U-shaped stay rod and bracing wire to be coupled together, because extra-high voltage Guywire tower load is larger, each root bracing wire is made up of some sub-bracing wires, therefore each block triangle yoke plate need arrange two bolts hole except connecting stay wire rod, meanwhile, the bottom of U-shaped stay rod arranges additional anchor measure, and top arranges location-plate, not only effectively reduce U-shaped stay rod length, ensure that the construction and installation quality of U-shaped stay rod simultaneously.
Present invention employs the structural shape of embedding two single u-shaped stay rods on the inclination principal post of same concrete slab foundation, meet the instructions for use of extra-high voltage single-column Guywire tower V-type bracing wire, have and construct beneficial effect that is reasonable, simple, the attractive in appearance economy of power transmission.
Accompanying drawing explanation
Fig. 1 is layout schematic diagram of the present invention;
Fig. 2 is organigram of the present invention;
Fig. 3 is the top view of Fig. 2 at cross section A-A place;
Fig. 4 is the lateral view of Fig. 3 at section B-B place;
Fig. 5 is the top view of Fig. 2 at section C-C place.
Wherein: 1, base plate; The main muscle of 1a, base plate; 1b, floor board framing stud; 2, inclination principal post; 2a, principal post indulge muscle; 2b, principal post stirrup; 3, U-shaped stay rod; 3a, stay rod anchor slab; 3b, anchoring nut; 4, triangle yoke plate; 5, location-plate; 6, bracing wire; 7, king-post.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
See Fig. 1 to Fig. 5, a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure, the king-post 7 comprising bracing wire 6 and connected by bracing wire 6 and some foundation structure main bodys, king-post 7 is rectangular structure and its cross section is square, four sides corresponding foundation structure main body respectively of king-post 7, each foundation structure main body comprises base plate 1, be fixed on the inclination principal post 2 of base plate 1 end face, one end is exposed the inclination principal post 2 end face other end and is imbedded the U-shaped stay rod 3 of inclination principal post 2 and be fixed on the triangle yoke plate 4 of U-shaped stay rod 3 bared end, the bared end of U-shaped stay rod 3 is U-shaped elbow end, each side of king-post 7 connects the bracing wire 6 of two V-shaped layouts, the bottom of V-stay 6 is drawn in and is connected on the triangle yoke plate 4 in corresponding foundation structure main body, described base plate 1 and inclination principal post 2 form steel concrete overall structure, base plate 1 is taper type, its bottom surface and end face are square, inclination principal post 2 is constant dimension column, its cross section is square, the incline direction of inclination principal post 2 and bracing wire 6 is consistent but angle of inclination is different, described U-shaped stay rod 3 is in the internal bend of inclination principal post 2, the geometric center line parallel of hypomere broken line and inclination principal post 2, the plane parallel at two bracing wire 6 places in the foundation structure main body at epimere broken line and its place.
The bottom surface length of side of base plate 1 is 3900mm, the end face length of side is about 1600mm, the intersection of inclination principal post 2 medial surface and end face is positioned on the foursquare limit of end face, the edge thickness of base plate 1 is 350mm, interior thickness is 700mm, and the length of side of the cross section of inclination principal post 2 is 1200mm, in use, foundation structure main body embedded depth is 3800mm, and the height that earth's surface is exposed on its top is 200mm.
Each inclination principal post 2 is arranged side by side two U-shaped stay rods 3, the length that two U-shaped stay rods 3 imbed inclination principal post 2 is 1480mm, the length exposing inclination principal post 2 is 300mm, the length of the hypomere broken line of two U-shaped stay rods 3 is 700mm, and the geometric center lines of inclination principal post 2 and the angle of horizontal plane are 76 °, the epimere broken line of U-shaped stay rod 3 and the angle of horizontal plane are 50 °, minimum range >=200mm on rear side of the hypomere broken line of two U-shaped stay rods 3 and inclination principal post 2 between inclined plane, the epimere broken line of two U-shaped stay rods 3 and the intersection point of inclination principal post 2 end face are positioned at end face intermediate vertical on the axis of symmetry of side, two projections of U-shaped stay rod 3 on the inclined plane of inclination principal post 2 are symmetrical about the longitudinal centre line on inclined plane, and the axis angle of two U-shaped stay rods 3 is 4 °, the intersection point of respective axis and inclination principal post 2 end face is 250mm to the distance of inclination principal post 2 end face geometric center, the lower end of each U-shaped stay rod 3 all arranges anchor measure, described anchor measure comprises an anchor slab 3a connected together the lower end of U-shaped stay rod 3 and is fixed on six nut 3b of anchor slab 3a both sides, the upper end of two U-shaped stay rods 3 is provided with the shared location-plate 5 that can be fixed the two, the top of each U-shaped stay rod 3 is all fixed with triangle yoke plate 4, each triangle yoke plate 4 is provided with three bolts hole, one of them bolt hole is used for penetrating U-shaped stay rod 3, two other bolt hole is used for connecting stay wire 6.
Below implementation process of the present invention is described in further detail:
Plane arrangement structure as shown in Figure 1, the cross section of the king-post 7 of single-column Guywire tower is in square, and each side of king-post 7 connects two bracing wires 6 of arranging in " V-arrangement ", and the bottom of V-type bracing wire 6 is drawn in and is connected to foundation structure main body end face.
A kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, comprising: base plate 1, inclination principal post 2, U-shaped stay rod 3 and triangle yoke plate 4.
Wherein, base plate 1 and inclination principal post 2 are steel concrete overall structures, and base plate 1 is taper type, base plate 1 is positioned at structure bottom, and its bottom surface is square, and the length of side is 3900mm, upper surface is also square, and the edge thickness of base plate 1 is 350mm, and interior thickness is 700mm; Inclination principal post 2 is constant dimension column, and cross section is square, and the length of side is 1200mm, and its underpart is fixed in the frustum end face of base plate 1, and the height that earth's surface is exposed on its top is 200mm, and end face is plane, and whole basic embedded depth is 3800mm.The incline direction of inclination principal post 2 is consistent with the incline direction of " V " type bracing wire, but angle of inclination is different, and the geometric center lines of inclination principal post 2 and horizontal plane angle are 76 °.
Base plate 1 and inclination principal post 2 are making the main muscle 1a of base plate, floor board framing stud 1b, principal post indulges muscle 2a and adopting concrete monobloc cast to form after principal post stirrup 2b.
The bottom of two U-shaped stay rods 3 is imbedded in inclination principal post 2, and embedment length is 1480mm, and the U-shaped elbow in top exposes the end face of inclination principal post 2, and exposed length is 300mm.U-shaped stay rod 3 is in the internal bend of inclination principal post 2, hypomere broken line and principal post edge minimum range are more than or equal to 200mm, hypomere broken line length is 700mm, with the geometric center line parallel of described inclination principal post 2, epimere broken line and described V-type bracing wire place plane parallel, be 50 degree with the angle of horizontal plane, and be positioned at end face intermediate vertical on the axis of symmetry of side with the intersection point of inclination principal post 2 end face; As shown in Figure 4, the projections on the inclined plane of inclination principal post 2 of two U-shaped stay rods 3 are symmetrical about the center line on inclined plane, and the upper end of two U-shaped stay rods 3 distance is large, lower end apart from little, axis angle is 4
o, respective axis and foundation structure main body end face intersection point are 250mm to the distance of foundation structure main body end face geometric center.
The lower end of each U-shaped stay rod 3 all arranges anchor measure: an an anchor slab 3a and six nut 3b is installed in its bottom; In addition, the top of two U-shaped stay rods 3 is provided with common rectangle location-plate 5 and is fixed the two, and each U-shaped stay rod 3 is inserted in a triangle yoke plate 4 in advance before buried foundation main structure body.
Be provided with three bolts hole above each triangle yoke plate 4, a hole penetrates U-shaped stay rod 3, and two other hole is used for connecting stay wire 6.
In above-described embodiment, the steel concrete overall structure that base plate 1 and inclination principal post 2 form is batter post expansion adagio basis conventional in transmission line of electricity, has good resistance to plucking load-carrying properties, in flat country, is one of foundation pattern of economy the most; The bracing wire be obliquely installed is more suitable for adopting inclined column foundation to carry out the adverse effect of elimination of level power, and is not suitable for adopting straight column type basis, and therefore above-described embodiment adopts batter post adagio basis just in time to meet its stress characteristic.Because guyed foundation is based on resistance to plucking, pressing down is not the governing factor of basic engineering, in conjunction with this feature, described embodiment reasonably optimizing key dimension, the preferably width of embeded depth of foundation, base plate 1 and thickness, thus save basic material, there is good economy.
In above-described embodiment, by the restriction that each space of components size and bracing wire connect, the geometry axle center lineation of two single u-shaped stay rods 3 can not be made with thinking to meet at the geometric center of basic end face, thus have employed and keep the mode of certain intervals and angle to solve this construction problem.Certainly inclination principal post 2 eccentric force is also inevitably made, in order to farthest reduce its adverse effect, incline direction and the bracing wire of two single u-shaped stay rods 3 of described embodiment keep completely the same, and the intersection point of axis and inclination principal post 2 end face is symmetrical about end face geometric center separately.
When above-described embodiment is used for extra-high voltage project, because tower load is comparatively large, every root bracing wire have employed 2 root bracing wires, and therefore each block triangle yoke plate 4 is all provided with two bracing wire preformed holes, to adapt to extra-high voltage project feature; Because uplift load is comparatively large, stay rod 3 have employed the anchor measure of bolt anchor plate type, easy construction, farthest reduces stay rod length of embedment, saves steel, further increases the economy on basis.
Above content is to inventing the further description done in conjunction with concrete preferred embodiment; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (8)
1. an extra-high voltage single-column Guywire tower V-type bracing wire foundation structure, it is characterized in that, the king-post (7) comprising bracing wire (6) and connected by bracing wire (6) and some foundation structure main bodys, king-post (7) is for rectangular structure and its cross section is square, four sides corresponding foundation structure main body respectively of king-post (7), each foundation structure main body comprises base plate (1), be fixed on the inclination principal post (2) of base plate (1) end face, one end is exposed inclination principal post (2) the end face other end and is imbedded the U-shaped stay rod (3) of inclination principal post (2) and be fixed on the triangle yoke plate (4) of U-shaped stay rod (3) bared end, the bared end of U-shaped stay rod (3) is U-shaped elbow end, each side of king-post (7) connects the bracing wire (6) of two V-shaped layouts, the bottom of V-stay (6) is drawn in and is connected on the triangle yoke plate (4) in corresponding foundation structure main body, described base plate (1) and inclination principal post (2) composition steel concrete overall structure, base plate (1) is taper type, bottom surface and the end face of base plate (1) are square, the bottom surface length of side is 3900mm, the edge thickness of base plate (1) is 350mm, interior thickness is 700mm, inclination principal post (2) is constant dimension column, the incline direction of inclination principal post (2) and bracing wire (6) is consistent but angle of inclination is different, described U-shaped stay rod (3) internal bend in inclination principal post (2), the geometric center line parallel of hypomere broken line and inclination principal post (2), the plane parallel at two bracing wire (6) places in the foundation structure main body at epimere broken line and its place.
2. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 1, it is characterized in that, the cross section of inclination principal post (2) is square, the length of side of cross section is 1200mm, in use, foundation structure main body embedded depth is 3800mm, and the height that earth's surface is exposed on its top is 200mm.
3. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 1, it is characterized in that, each inclination principal post (2) is arranged side by side two U-shaped stay rods (3), the length that two U-shaped stay rods (3) imbed inclination principal post (2) is 1480mm, the length exposing inclination principal post (2) is 300mm, and the length of the hypomere broken line of two U-shaped stay rods (3) is 700mm.
4. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 3, it is characterized in that, the geometric center lines of inclination principal post (2) and the angle of horizontal plane are 76 °; The epimere broken line of U-shaped stay rod (3) and the angle of horizontal plane are 50 °, and the epimere broken line of U-shaped stay rod (3) and the angle of horizontal plane equal the angle of bracing wire and horizontal plane.
5. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 3, it is characterized in that, minimum range >=200mm between the hypomere broken line of two U-shaped stay rods (3) and inclination principal post (2) rear side inclined plane, the epimere broken line of two U-shaped stay rods (3) and the intersection point of inclination principal post (2) end face are positioned at end face intermediate vertical on the axis of symmetry of side.
6. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 3, it is characterized in that, two projections of U-shaped stay rod (3) on the inclined plane of inclination principal post (2) are symmetrical about the longitudinal centre line on inclined plane, and the axis angle of two U-shaped stay rods (3) is 4 °, the intersection point of respective axis and inclination principal post (2) end face is 250mm to the distance of inclination principal post (2) end face geometric center.
7. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 3, it is characterized in that, the lower end of each U-shaped stay rod (3) all arranges anchor measure, described anchor measure comprises an anchor slab (3a) connected together the lower end of U-shaped stay rod (3) and is fixed on six nuts (3b) of anchor slab (3a) both sides, and the upper end of two U-shaped stay rods (3) is provided with the shared location-plate (5) that can be fixed the two.
8. a kind of extra-high voltage single-column Guywire tower V-type bracing wire foundation structure according to claim 3, it is characterized in that, the top of each U-shaped stay rod (3) is all fixed with triangle yoke plate (4), each triangle yoke plate (4) is provided with three bolts hole, one of them bolt hole is used for penetrating U-shaped stay rod (3), and two other bolt hole is used for connecting stay wire (6).
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| V型拉线塔在750kV输电线路工程中的应用;杨磊 等;《电力建设》;20120331;第33卷(第3期);第45-48页 * |
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| CN104358272A (en) | 2015-02-18 |
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