CN105696617A - Fabricated foundation with oblique-angle cone supports for power transmission tower, and construction method thereof - Google Patents
Fabricated foundation with oblique-angle cone supports for power transmission tower, and construction method thereof Download PDFInfo
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- CN105696617A CN105696617A CN201610081292.5A CN201610081292A CN105696617A CN 105696617 A CN105696617 A CN 105696617A CN 201610081292 A CN201610081292 A CN 201610081292A CN 105696617 A CN105696617 A CN 105696617A
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- power transmission
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- steel bracket
- fixed pedestal
- oblique
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 51
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 13
- 210000002683 foot Anatomy 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 7
- 239000001997 corrosion-resisting alloy Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 238000004078 waterproofing Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009411 base construction Methods 0.000 claims description 3
- 229940077388 benzenesulfonate Drugs 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
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- 239000011572 manganese Substances 0.000 claims description 3
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- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229960000969 phenyl salicylate Drugs 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical compound [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 3
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- 239000000126 substance Substances 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (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)
- Foundations (AREA)
Abstract
The invention relates to a fabricated foundation with oblique-angle cone supports for a power transmission tower, and a construction method thereof. The power transmission tower comprises a tower body, cross arms located at the upper end of the tower body and arranged vertically to the axial direction of the tower body, and tower feet arranged at the lower end of the tower body. The fabricated foundation comprises the steel supports provided with fixed bases, wherein each steel support is of a tower-shaped structure with a longitudinal section which is in the shape of an oblique triangle, and fixing elements connected with the corresponding tower foot and support fixing plates connected with the corresponding fixed base are arranged at the upper end and the lower end of each steel support respectively; and each fixed base is composed of transversal fixing plates horizontally arranged along the longitudinal direction, and fixing beams located at the upper sides of the transversal fixing plates and arranged vertically to the transversal fixing plates. The fabricated foundation with oblique-angle cone supports for the power transmission tower, and the construction method thereof, which are provided by the invention, have the advantages of high foundation capability, low installation difficulty and fast rush-repair speed.
Description
Technical field
The present invention relates to a kind of assembling type base, in particular to tilting pyramid support assembling type base and the construction method thereof of a kind of power transmission tower。
Background technology
The pole and tower foundation of power transmission tower is embedded in underground, provides load to support for electric power line pole tower, is the important component part of transmission line structure system。Transmission line of electricity is precipitous area through hill path, is frequently run onto and lacks construction raw material, large-scale construction equipment and be difficult to the situation that carrying arrives。So needing a kind of assembling type base for power transmission tower, to ensure that work set up by the power transmission tower in precipitous area in hill path, reduce difficulty of construction, to improve engineering construction quality and economy。
Existing pole and tower foundation is the concrete foundation of cast in situs, it is necessary to excavation pit, support template in the foundation ditch of excavation, puts into the reinforcement cage skeleton of colligation number in support template, and to putting into casting concrete in reinforcement cage skeleton, to form traditional pole and tower foundation。Problems with can be related to: 1. precipitous area pole and tower foundation component, concrete and reinforcing bar transport difficult in hill path。Foundation cost height, transport difficult, not easily install。2. the support template of pole and tower foundation, concreting require time for maintenance, construct loaded down with trivial details and the cycle is long, it is impossible to meet the engineer applied requirement of rush repair。3. transport and construction cost are big, and construction speed is difficult to control to。4. the area that hill path is precipitous, shortage constructs raw material, large-scale construction equipment carrying and work it is not suitable for。5. foundation bearing capacity is low, and basis needs take bigger area, deeper of embedded depth of foundation, the excavation of the cubic metre of earth and stone and concrete and amount of reinforcement is big。6. the substance of basic component is big, lifting difficulty。
For this reason, it may be necessary to provide tilting pyramid support assembling type base and the construction method thereof of a kind of power transmission tower, to improve foundation capability, to reduce transport and installation difficulty, raising engineering construction quality and economy。
Summary of the invention
The problems referred to above solved are realized by following technical proposals: provide the tilting pyramid support assembling type base of a kind of power transmission tower, and described power transmission tower includes tower body, at the cross-arm of described tower body upper end setting axially vertical with it be arranged on the column foot of described tower body lower end；Described assembling type base includes the steel bracket being provided with fixed pedestal,
Described steel bracket is longitudinal section is the tower structure of oblique triangle, and it is respectively arranged at two ends with the fixture being connected with described column foot and the bracket fixing plate being connected with described fixed pedestal up and down；
Described fixed pedestal by the fixing plate of longitudinally horizontally arranged transverse direction and on the upside of the fixing plate of described transverse direction, the fixing beam of perpendicular setting forms。
Described steel bracket is the frame structure being cross-linked to form by main material, oblique material and horizontally disposed horizontal material,
Described horizontal material forms polygon tabula face in same level；
Described oblique material two ends are connected to form triangle support face respectively with adjacent described main material and horizontal material。
Described main material, horizontal material and oblique material junction are provided with gusset plate, and described gusset plate is provided with and the connecting hole of the vertically disposed circular array in its surface；Fixing bolt it is provided with in described connecting hole；
It is provided with gap between the described main material that described gusset plate connects, horizontal material and oblique material。
The cross section that described bracket fixing plate includes being made up of orthogonal riser and transverse slat is the connection seat of soil font；
Described riser is provided with the fixing bolt of fixing described main material and oblique material,
Described transverse slat is provided with vertical with its surface, runs through the fixing bolt of described fixed pedestal。
The described steel bracket being separately positioned on four described column foots tilts to described power transmission tower axial centre；
The angle on the axis of described steel bracket and described fixed pedestal surface is acute angle。
The line of centres of described power transmission tower and steel bracket is at the projection of horizontal plane and the center of fixed pedestal on same straight line, and the central point of described power transmission tower and steel bracket is misaligned in the projection of horizontal plane。
The fixing plate of described transverse direction and fixing beam are concrete, parts by weight shared by each composition material of described concrete are: cement 200-400 part, fine aggregate sand 150-300 part, coarse aggregate sand 100-200 part, superfine quartz sand 1-8 part, silica dioxide granule 0.2-0.9 part, waterproofing agent 3-7 part, water 100-200 part；
Parts by weight shared by each composition material of described waterproofing agent are: active zeolite powder 45-55 part, iron chloride 5-7 part, paraffin 3-4 part, phenyl salicylate 2-3 part, stearic acid 2-3 part, polypropylene fibre 7-13 part, molasses 2-3 part, sodium alkyl benzene sulfonate 6-8 part, triethanolamine 5-7 part, aluminium potassium sulfate 12-15 part, high efficiency water reducing agent 6-12 part, sodium methyl silicate 3-7 part, potassium fluosilicate 3-6 part。
Described steel bracket is corrosion-resisting alloy steel；
Described corrosion-resisting alloy steel includes following component by mass percentage and constitutes:
Carbon: 0.03%, chromium: 19%, nickel: 21%, molybdenum: 5%, copper: 2%, silicon: 2, manganese: 2, nitrogen: 0.2, rare earth: 0.3, surplus is ferrum。
It is arranged on the width of the fixing plate of the described transverse direction on the downside of described bracket fixing plate more than the fixing plate of described transverse direction not being connected with the fixing plate of described transverse direction。
Assembling type base construction method, described method comprises the steps:
After power transmission tower basal plane and neighbouring surface dust and foreign material are cleaned out by the first step, by construction drawing requirement on construction ground is put slope, excavation pit；
Second step is flat to multiple spot behaviour at the bottom of foundation ditch, makes foundation ditch substantially smooth, then spreads coarse sand or the fine stone bed course of 50mm, then multiple spot behaviour is flat, makes the end, hole entirely smooth；
3rd step fixed pedestal lifting: at the bottom of Foundation Pit according to construction drawing unwrapping wire, the installation site of positioning plate structure；Then described fixed pedestal is lifted in foundation ditch；
4th step lifting steel bracket: steel bracket is arranged on described fixed pedestal；
Steel bracket described in type and fixed pedestal, according to different geological environments and requirement for anticorrosion, are taked the anti-corrosion measure of correspondence by the 5th step；
6th step backfill foundation ditch: adopt back-filling in layers compacting, often high for the backfill 300mm just compacting of soil naturally is once, it is ensured that the high H of the described steel bracket dew on ground is 200～500mm；
7th step ensures that the basis in assembling type base at least 1 week stands the phase。
With immediate prior art ratio, technical scheme provided by the invention has the advantages that
1, the assembling type base of power transmission tower that the application provides, has that foundation capability is strong, a transport and installation difficulty is low, the excellent effect of engineering construction quality and good economy performance。
2, the assembling type base of the power transmission tower that the application provides adopts fixed pedestal and the fixing mode of steel bracket combination, has that the engineering time is short, low cost of manufacture and a high excellent effect of parts product quality。
3, the steel bracket of assembling type base of the power transmission tower that the application provides tilts to described power transmission tower axial centre, has steel bracket uniform force, an excellent effect that assembling type base top deformational displacement is little。
4, the steel bracket of the assembling type base of the power transmission tower that the application provides tilts to described power transmission tower axial centre, the vertical load that assembling type base is subject to produces the moment of flexure that eccentric bending moment counteracting part is produced by horizontal loading on fixed pedestal, has that fixed pedestal stress weight little, assembling type base is little, concrete consumption is few and lifts simple excellent effect。
5, the assembling type base of the power transmission tower that the application provides adopts fixed pedestal and steel bracket relative position particular design, has the excellent effect that fixed pedestal stress is little, assembling type base weight is little and concrete consumption is few。
6, the steel bracket that the application provides adopts the corrosion-resisting alloy steel of special composition proportioning, has corrosion resistance and wearability is good, production cost is low, improve the excellent effect in more than 1 year service life。
7, the fixing plate of the transverse direction that the application provides and fixing beam adopt the concrete of special composition proportioning, have the excellent effect that water resistance is good, ageing resistace is excellent, improve more than 1 year service life。
Accompanying drawing explanation
Fig. 1 is the fabricated base structure schematic diagram of power transmission tower provided by the invention；
Fig. 2 is assembling type base front view provided by the invention；
Fig. 3 is assembling type base side view provided by the invention；
Fig. 4 is fixed pedestal top view provided by the invention；
Fig. 5 is steel bracket provided by the invention and fixed pedestal connection diagram；
Fig. 6 is the location arrangements figure of one group of assembling type base provided by the invention；
Fig. 7 is assembling type base location arrangements figure provided by the invention；
Wherein, 1 fixed pedestal, 2 steel brackets, 3 bracket fixing plates, 4 transverse directions fix plates, 5 fixing beam, 6 main materials, 7 oblique materials, 8 horizontal materials, 9 gusset plates。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
Embodiment 1:
As it is shown in figure 1, the tilting pyramid support assembling type base of a kind of power transmission tower, described power transmission tower is provided with tower body, at the cross-arm of described tower body upper end setting axially vertical with it be arranged on the column foot of described tower body lower end；Described assembling type base is provided with the steel bracket 2 of fixed pedestal 1,
As shown in Figures 2 and 3, described steel bracket 2 is the tower structure of oblique triangle for longitudinal section, and it is respectively arranged at two ends with the fixture being connected with described column foot and the bracket fixing plate 3 being connected with described fixed pedestal 1 up and down；
As shown in Figure 4, described fixed pedestal 1 by the fixing plate 4 of longitudinally horizontally arranged transverse direction and on the upside of the fixing plate 4 of described transverse direction, the fixing beam 5 of perpendicular setting forms。
As it is shown on figure 3, described steel bracket 2 is the frame structure being cross-linked to form by main material 6, oblique material 7 and horizontally disposed horizontal material 8,
Described horizontal material 8 forms tetragon tabula face in same level；
Described oblique material 7 two ends are connected to form triangle support face respectively with adjacent described main material 6 and horizontal material 8。
Described main material 6, horizontal material 8 and oblique material 7 junction are provided with gusset plate 9, and described gusset plate 9 is provided with and the connecting hole of the vertically disposed circular array in its surface；Fixing bolt it is provided with in described connecting hole；
It is provided with gap between described main material 6, horizontal material 8 and oblique material 7 that described gusset plate 9 connects。
Described bracket fixing plate 3 is provided with the connection seat that the cross section being made up of orthogonal riser and transverse slat is soil font；
Described riser is provided with the fixing bolt of fixing described main material 6 and oblique material 7,
Described transverse slat is provided with vertical with its surface, runs through the fixing bolt of described fixed pedestal 1。
As shown in Figure 5 and Figure 6, the described steel bracket 2 being separately positioned on four described column foots tilts to described power transmission tower axial centre；
The angle on the axis of described steel bracket 2 and described fixed pedestal 1 surface is acute angle。
The line of centres of described power transmission tower and steel bracket 2 is at the projection of horizontal plane and the center of fixed pedestal 1 on same straight line, and the central point of described power transmission tower and steel bracket 2 is misaligned in the projection of horizontal plane。
The fixing plate 4 of described transverse direction and fixing beam 5 are concrete, parts by weight shared by each composition material of described concrete are: cement 200-400 part, fine aggregate sand 150-300 part, coarse aggregate sand 100-200 part, superfine quartz sand 1-8 part, silica dioxide granule 0.2-0.9 part, waterproofing agent 3-7 part, water 100-200 part；
Parts by weight shared by each composition material of described waterproofing agent are: active zeolite powder 45-55 part, iron chloride 5-7 part, paraffin 3-4 part, phenyl salicylate 2-3 part, stearic acid 2-3 part, polypropylene fibre 7-13 part, molasses 2-3 part, sodium alkyl benzene sulfonate 6-8 part, triethanolamine 5-7 part, aluminium potassium sulfate 12-15 part, high efficiency water reducing agent 6-12 part, sodium methyl silicate 3-7 part, potassium fluosilicate 3-6 part。
Described steel bracket 2 is corrosion-resisting alloy steel；
Described corrosion-resisting alloy steel includes following component by mass percentage and constitutes:
Carbon: 0.03%, chromium: 19%, nickel: 21%, molybdenum: 5%, copper: 2%, silicon: 2, manganese: 2, nitrogen: 0.2, rare earth: 0.3, surplus is ferrum。
It is arranged on the width of the fixing plate 4 of the described transverse direction on the downside of described bracket fixing plate 3 more than the fixing plate 4 of described transverse direction not being connected with the fixing plate 4 of described transverse direction。
Assembling type base construction method, described method comprises the steps:
After power transmission tower basal plane and neighbouring surface dust and foreign material are cleaned out by the first step, by construction drawing requirement on construction ground is put slope, excavation pit；
Second step is flat to multiple spot behaviour at the bottom of foundation ditch, makes foundation ditch substantially smooth, then spreads coarse sand or the fine stone bed course of 50mm, then multiple spot behaviour is flat, makes the end, hole entirely smooth；
3rd step fixed pedestal 1 lifts: at the bottom of Foundation Pit according to construction drawing unwrapping wire, the installation site of positioning plate structure；Then fixed pedestal 1 is lifted in foundation ditch；
4th step lifting steel bracket 2: steel bracket 2 is arranged on described fixed pedestal 1；
Steel bracket described in type 2 and fixed pedestal 1, according to different geological environments and requirement for anticorrosion, are taked the anti-corrosion measure of correspondence by the 5th step；
6th step backfill foundation ditch: adopt back-filling in layers compacting, often high for the backfill 300mm just compacting of soil naturally is once, it is ensured that the described steel bracket 2 high H of dew on ground is 200～500mm；
7th step ensures that the basis in assembling type base at least 1 week stands the phase。
In figure, A point is the projection at horizontal plane of the power transmission tower center；B, B1, B2, B3 point is the projection at horizontal plane of steel bracket 2 center；C, C1, C2, C3 point is the projection at horizontal plane of fixed pedestal 1 center；Wherein, AB, AB1, AB2, AB3 are respectively parallel to the longitudinal axis of corresponding fixing beam 5。A, B, C conllinear, A, B1, C1 conllinear, A, B2, C3 conllinear, A, B3, C3 conllinear。
Above example is only in order to illustrate that technical scheme is not intended to limit; although the present invention being described in detail with reference to above-described embodiment; the specific embodiment of the present invention still can be modified or equivalent replacement by those of ordinary skill in the field; and these without departing from any amendment of spirit and scope of the invention or equivalent are replaced, within the claim protection model of its present invention all awaited the reply in application。
Claims (10)
1. a tilting pyramid support assembling type base for power transmission tower, described power transmission tower includes tower body, at the cross-arm of described tower body upper end setting axially vertical with it be arranged on the column foot of described tower body lower end；Described assembling type base includes the steel bracket (2) being provided with fixed pedestal (1), it is characterised in that
Described steel bracket (2) is the tower structure of oblique triangle for longitudinal section, and it is respectively arranged at two ends with the fixture being connected with described column foot and the bracket fixing plate (3) being connected with described fixed pedestal (1) up and down；
Described fixed pedestal (1) is made up of the fixing plate (4) of longitudinally horizontally arranged transverse direction and the fixing beam (5) in fixing plate (4) upside of described transverse direction, perpendicular setting。
2. basis as claimed in claim 1, it is characterised in that described steel bracket (2) is the frame structure being cross-linked to form by main material (6), oblique material (7) and horizontally disposed horizontal material (8),
Described horizontal material (8) forms polygon tabula face in same level；
Described oblique material (7) two ends are connected to form triangle support face respectively with adjacent described main material (6) and horizontal material (8)。
3. basis as claimed in claim 2, it is characterized in that, described main material (6), horizontal material (8) and oblique material (7) junction are provided with gusset plate (9), and described gusset plate (9) is provided with and the connecting hole of the vertically disposed circular array in its surface；Fixing bolt it is provided with in described connecting hole；
It is provided with gap between the described main material (6) that described gusset plate (9) connects, horizontal material (8) and oblique material (7)。
4. basis as claimed in claim 3, it is characterised in that the cross section that described bracket fixing plate (3) includes being made up of orthogonal riser and transverse slat is the connection seat of soil font；
Described riser is provided with fixing described main material (6) and the fixing bolt of oblique material (7),
Described transverse slat is provided with vertical with its surface, runs through the fixing bolt of described fixed pedestal (1)。
5. basis as claimed in claim 2, it is characterised in that the described steel bracket (2) being separately positioned on four described column foots tilts to described power transmission tower axial centre；
The angle on the axis of described steel bracket (2) and described fixed pedestal (1) surface is acute angle。
6. basis as claimed in claim 1, it is characterized in that, the line of centres of described power transmission tower and steel bracket (2) is at the projection of horizontal plane and the center of fixed pedestal (1) on same straight line, and the central point of described power transmission tower and steel bracket (2) is misaligned in the projection of horizontal plane。
7. basis as claimed in claim 1, it is characterized in that, described transverse direction fixes plate (4) and fixing beam (5) is concrete, parts by weight shared by each composition material of described concrete are: cement 200-400 part, fine aggregate sand 150-300 part, coarse aggregate sand 100-200 part, superfine quartz sand 1-8 part, silica dioxide granule 0.2-0.9 part, waterproofing agent 3-7 part, water 100-200 part；
Parts by weight shared by each composition material of described waterproofing agent are: active zeolite powder 45-55 part, iron chloride 5-7 part, paraffin 3-4 part, phenyl salicylate 2-3 part, stearic acid 2-3 part, polypropylene fibre 7-13 part, molasses 2-3 part, sodium alkyl benzene sulfonate 6-8 part, triethanolamine 5-7 part, aluminium potassium sulfate 12-15 part, high efficiency water reducing agent 6-12 part, sodium methyl silicate 3-7 part, potassium fluosilicate 3-6 part。
8. basis as claimed in claim 2, it is characterised in that described steel bracket (2) is corrosion-resisting alloy steel；
Described corrosion-resisting alloy steel includes following component by mass percentage and constitutes:
Carbon: 0.03%, chromium: 19%, nickel: 21%, molybdenum: 5%, copper: 2%, silicon: 2, manganese: 2, nitrogen: 0.2, rare earth: 0.3, surplus is ferrum。
9. basis as claimed in claim 1, it is characterized in that, be arranged on the width of the fixing plate (4) of described transverse direction of described bracket fixing plate (3) downside more than the fixing plate (4) of described transverse direction not being connected with the fixing plate (4) of described transverse direction。
10. the assembling type base construction method for 1～9 any one claim, it is characterised in that described method comprises the steps:
After power transmission tower basal plane and neighbouring surface dust and foreign material are cleaned out by the first step, by construction drawing requirement on construction ground is put slope, excavation pit；
Second step is flat to multiple spot behaviour at the bottom of foundation ditch, makes foundation ditch substantially smooth, then spreads coarse sand or the fine stone bed course of 50mm, then multiple spot behaviour is flat, makes the end, hole entirely smooth；
3rd step fixed pedestal (1) lifting: at the bottom of Foundation Pit according to construction drawing unwrapping wire, the installation site of positioning plate structure；Then described fixed pedestal (1) is lifted in foundation ditch；
4th step lifting steel bracket (2): steel bracket (2) is arranged on described fixed pedestal (1)；
Steel bracket described in type (2) and fixed pedestal (1), according to different geological environments and requirement for anticorrosion, are taked the anti-corrosion measure of correspondence by the 5th step；
6th step backfill foundation ditch: adopt back-filling in layers compacting, often high for the backfill 300mm just compacting of soil naturally is once, it is ensured that the described steel bracket (2) the high H of dew on ground is 200～500mm；
7th step ensures that the basis in assembling type base at least 1 week stands the phase。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610081292.5A CN105696617A (en) | 2016-02-04 | 2016-02-04 | Fabricated foundation with oblique-angle cone supports for power transmission tower, and construction method thereof |
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| CN201610081292.5A CN105696617A (en) | 2016-02-04 | 2016-02-04 | Fabricated foundation with oblique-angle cone supports for power transmission tower, and construction method thereof |
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| CN106498973A (en) * | 2016-12-27 | 2017-03-15 | 国网江苏省电力公司经济技术研究院 | A kind of assembled type base for power transmission line iron tower and its installation method |
| CN106498974A (en) * | 2016-12-27 | 2017-03-15 | 国网江苏省电力公司经济技术研究院 | A kind of assembling type base and its installation method for power transmission tower |
| CN109487812A (en) * | 2018-10-22 | 2019-03-19 | 四川电力设计咨询有限责任公司 | A kind of concrete assembled basic and its construction method of diagonal-bracing type |
| WO2019100166A1 (en) * | 2017-11-26 | 2019-05-31 | Ampjack Industries Ltd. | Utility tower leveling apparatus and method |
| CN111485573A (en) * | 2020-03-19 | 2020-08-04 | 衡水衡源电力建设有限责任公司 | Transmission project prefabricated foundation installation and iron tower assembly coherent construction method |
| CN113417313A (en) * | 2021-07-20 | 2021-09-21 | 四川电力设计咨询有限责任公司 | Section steel support shroud plate assembled foundation for frozen soil area |
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| CN113417313A (en) * | 2021-07-20 | 2021-09-21 | 四川电力设计咨询有限责任公司 | Section steel support shroud plate assembled foundation for frozen soil area |
| CN113417313B (en) * | 2021-07-20 | 2023-02-03 | 四川电力设计咨询有限责任公司 | Section steel support shroud plate assembled foundation for frozen soil area |
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Application publication date: 20160622 |