CN214110863U - Stainless steel pipe composite electric pole - Google Patents
Stainless steel pipe composite electric pole Download PDFInfo
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- CN214110863U CN214110863U CN202022129856.2U CN202022129856U CN214110863U CN 214110863 U CN214110863 U CN 214110863U CN 202022129856 U CN202022129856 U CN 202022129856U CN 214110863 U CN214110863 U CN 214110863U
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- 239000002131 composite material Substances 0.000 title claims abstract description 97
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 193
- 239000010935 stainless steel Substances 0.000 title claims description 193
- 239000004567 concrete Substances 0.000 claims abstract description 106
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 39
- 238000005260 corrosion Methods 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 238000005452 bending Methods 0.000 abstract description 15
- 239000002253 acid Substances 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 11
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 27
- 239000004568 cement Substances 0.000 description 25
- 239000003638 chemical reducing agent Substances 0.000 description 24
- 238000002360 preparation method Methods 0.000 description 24
- 238000003466 welding Methods 0.000 description 17
- 239000000835 fiber Substances 0.000 description 12
- 241000282326 Felis catus Species 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000005086 pumping Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a pole technical field discloses a nonrust steel pipe composite electric pole, include nonrust steel pipe and pour the concrete layer of the hollow of shaping in nonrust steel pipe, be equipped with a plurality of shear force nails that extend to in the concrete layer on nonrust steel pipe's the inner wall. The utility model discloses mainly be with nonrust steel pipe and concrete through centrifugal molding's compound hollow structure, the characteristics that the mechanical properties of full play nonrust steel pipe and concrete are good, corrosion resisting property is good, improve the wholeness ability of structure, more traditional compound pole structural molding is simple, bearing capacity is strong, rigidity is big, shock resistance is good, the anticollision collapses, stronger corrosion resisting property has moreover, all has better corrosion resisting property to the acid of atmosphere, water and general concentration, alkali, salt and multiple solvent. The invention solves the problems of insufficient bending moment, poor freezing resistance, poor corrosion resistance of the steel pipe pole and high manufacturing cost of the traditional concrete pole.
Description
Technical Field
The utility model relates to a pole technical field, more specifically relates to a compound pole of nonrust steel pipe.
Background
The development of transmission line towers in China has a history of over a hundred years, wherein the first square solid concrete electric pole produced in China in 1924 has a history of nearly 80 years.
The electric pole in the prior art is mostly of a reinforced concrete structure, has low manufacturing cost and mature construction and installation technology, and is widely applied to power transmission lines of various domestic voltage classes. However, this structure also has certain limitations: (1) the concrete is a brittle material, has low tensile strength, is easy to crack and has poor capability of resisting natural disasters; (2) the concrete has low unit density bearing capacity and large dead weight of the concrete pole, and is not beneficial to transportation and construction; (3) under natural environment, the inside reinforcing bar of concrete is perishable, shortens life. In addition, when natural disasters such as typhoon, ice disaster, flood, earthquake and the like occur, the rod-falling and line-breaking accidents often occur, the situations of power failure, communication interruption, road block and water cut are caused, and the post-disaster reconstruction work needs to be rapidly carried out. Particularly, the frequency of pole falling of the concrete pole is very high, and the operation safety of a power grid and the safety of equipment and personnel are seriously influenced.
Aiming at the current situation, a novel electric pole with good mechanical property, durability and corrosion resistance can be developed, and the problem that the application of the existing concrete annular electric pole is limited is solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses an overcome above-mentioned prior art at least not enough, provide a toughness good, mechanical properties is good, the moment of flexure is big, the durability is good, the corrosion resistance good stainless steel tube composite pole, solve ordinary annular concrete pole fragility big, from great, the corrosion resistance subalternation problem.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a compound pole of nonrust steel pipe, includes nonrust steel pipe and the concrete layer of pouring the hollow of shaping in nonrust steel pipe, be equipped with a plurality of shear force nails that extend to in the concrete layer on the inner wall of nonrust steel pipe.
The utility model discloses an introduce the stainless steel pipe composite pole that stainless steel pipe made hollow outsourcing stainless steel structure, the characteristics that full play stainless steel pipe and concrete mechanical properties are good, corrosion resisting property is good, improve the wholeness ability of structure, more traditional composite pole structural molding is simple, bearing capacity is strong, rigidity is big, shock resistance is good, the anticollision collapses, and stronger corrosion resisting property has moreover, all has better corrosion resisting property to the acid of atmosphere, water and general concentration, alkali, salt and multiple solvent. The invention solves the problems of insufficient bending moment, poor freezing resistance, poor corrosion resistance of the steel pipe pole and high manufacturing cost of the traditional concrete pole. More importantly, because nonrust steel pipe and concrete layer are inherent attribute separately has decided the problem that has the interface combination between the two for the bearing capacity moment of flexure of concrete outsourcing stainless steel structure's pole is relatively poor, and the amount of deflection deformation is big, and this is also the utility model discloses a big difficult problem that meets in the research process, for this, the utility model discloses set up a plurality of shear nails that extend to in the concrete layer on the inner wall of nonrust steel pipe, shear nail one end is connected to nonrust steel pipe inner wall through modes such as welding, and the other end extends to in the concrete layer, thereby improves the interface combining ability between nonrust steel pipe and the concrete layer to a great extent, makes the bearing capacity moment of deflection obtain great promotion, the amount of deflection deformation significantly reduces, has improved the mechanical properties of pole greatly.
The density of the shear nails arranged on the inner wall of the stainless steel pipe is related to the effect of improving interface combination, and the over-dense arrangement not only influences the molding of a concrete layer, but also increases the processing difficulty; and if the arrangement is too sparse, the improvement on interface combination is greatly discounted, preferably, the row spacing between the shear nails is 20-30 mm, and the length is 6-12 mm, so that the concrete layer can be better combined with the stainless steel pipe, and the bearing capacity bending moment of the electric pole is further improved.
The thickness of the stainless steel pipe is 2.5-5.5 mm. The stainless steel pipe can be an integrally formed column pipe or a taper pipe, and can also be a column pipe or a taper pipe consisting of two half pipes split along the axis.
The thickness of the concrete layer is 20-100 mm, and the concrete layer can be made of ordinary concrete or ultra-high performance concrete. Wherein, the common concrete comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-to-glue ratio; the ultra-high performance concrete comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
Stainless steel pipe has the preformed hole of in bank along length direction reservation, the stainless steel pipe inner wall welding that the preformed hole corresponds has the nut, and the stainless steel pipe inner wall that the preformed hole corresponds is fixed to the one end of nut, and the other end extends to the concrete layer that the preformed hole corresponds in, can be used to fixed cat ladder. Preferably, the aperture of the preformed holes is 14-20 mm, and the row spacing is 200-300 mm; and/or the inner diameter of the nut is 14-20 mm, and the length of the nut is 20-100 mm.
The preparation method of the stainless steel pipe composite electric pole comprises the following steps:
s1, manufacturing a stainless steel pipe with an inner wall connected with a shear nail, and assembling the stainless steel pipe into an electric pole mold;
s2, preparing a concrete mixture for forming a concrete layer;
s3, pouring the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in an electric pole mold in the step S1, and performing centrifugal molding to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and placing the composite electric pole into a storage yard for natural curing for 7-14 days.
Wherein, for the integrally formed stainless steel pipe, step S1 specifically comprises: preparing a pole mould, placing the stainless steel pipe in a lower mould of the pole mould, closing an upper mould of the pole mould, and assembling the mould for standby.
For a stainless steel pipe composed of two half pipes, step S1 is specifically: preparing an electric pole mould, placing two half pipes of the stainless steel pipes in an upper mould and a lower mould of the electric pole mould respectively, closing the moulds, and assembling the moulds for later use.
For a concrete layer formed by common concrete, the step S2 is specifically: and putting all cement, admixture and fine aggregate used for manufacturing the concrete layer into a stirrer according to the proportion, stirring for 60-120 seconds, then putting all water reducing agent and water into the stirrer, stirring for 60-120 seconds, and finally putting coarse aggregate into the stirrer, stirring for 30-90 seconds to obtain the concrete mixture. Preferably, the slump of the concrete mixture in the step S2 is 40-180 mm, and the compressive strength of the concrete mixture after steam curing in the step S4 is not lower than 40 MPa.
For the concrete layer formed by the ultra-high performance concrete, the step S2 is specifically: adding fine aggregate and steel fiber for manufacturing the ultra-high performance concrete layer into a stirrer according to the proportion, stirring for 60-120 seconds, adding all cement and admixtures into the stirrer, stirring for 180-240 seconds, and finally adding all water reducing agent and water into the stirrer, stirring for 360-600 seconds to obtain the ultra-high performance concrete mixture. Preferably, the slump of the ultra-high performance concrete mixture in the step S2 is 160-240 mm, and the compressive strength is not lower than 130 MPa and the bending strength is not lower than 14 MPa after steam curing in the step S4.
Compared with the prior art, the utility model has following beneficial effect:
(1) the stainless steel pipe composite electric pole has the advantages that the outer layer is the stainless steel pipe, the toughness is good, the impact resistance is good, the anti-collision collapse performance is good, the bending moment of the composite electric pole is improved, and the composite electric pole basically does not react with erosion components in the environment.
(2) The stainless steel pipe composite electric pole structure related by the scheme cancels annular reinforcement, the overall reinforcement amount is reduced by 30-50%, and the connecting part can be welded, so that a connecting rod can be manufactured; the problems of large brittleness, large self weight and inconvenient carrying of the concrete pole are effectively solved, and the manufacturing process is simple.
Drawings
Fig. 1 is a longitudinal sectional view of a stainless steel pipe composite pole.
Fig. 2 is an enlarged sectional view a-a of the stainless steel pipe composite pole shown in fig. 1.
Fig. 3 is a longitudinal sectional view of a stainless steel pipe (half pipe) composite pole.
Fig. 4 is an enlarged B-B cross-sectional view of the stainless steel tube (half-tube) composite pole shown in fig. 3.
Description of reference numerals: the concrete-filled steel tube comprises a stainless steel tube 100, a preformed hole 110, an ultrahigh-performance concrete layer 200, a nut 210 and a steel reinforcement framework 220.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention. The present invention will be described in further detail with reference to specific embodiments.
Example 1
Referring to fig. 1-2, the K-grade stainless steel tube-concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and a concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 2.5mm, and the thickness t2 of the concrete layer 200 is 30 mm.
In order to improve the interface bonding between the stainless steel pipe 100 and the concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 20mm and the length is 6 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The concrete layer 200 comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-to-glue ratio.
The preparation method of the stainless steel pipe-concrete composite pole comprises the following steps:
s1, preparing an electric pole mould, placing a stainless steel pipe in a lower mould of the electric pole mould, closing an upper mould of the electric pole mould, screwing down a screw, and assembling the mould for later use;
s2, calculating the using amount of each raw material for manufacturing a concrete layer according to the proportion, putting all cement, admixture and fine aggregate into a stirrer to be stirred for 60-120 seconds, then putting all water reducing agent and water into the stirrer to be stirred for 60-120 seconds, and finally putting coarse aggregate into the stirrer to be stirred for 30-90 seconds to obtain a concrete mixture with the slump of 40-180 mm;
s3, pumping the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in a pole mold in the step S1, and carrying out centrifugal molding to obtain the composite pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 40 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and placing the composite electric pole into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 2
Referring to fig. 1-2, the K-grade stainless steel tube-concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and a concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 5.5mm, and the thickness t2 of the concrete layer 200 is 100 mm.
In order to improve the interface bonding between the stainless steel pipe 100 and the concrete layer 200, rows of shear pins 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear pins 120 is 30mm and the length is 12 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The concrete layer 200 comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-cement ratio.
The preparation method of the stainless steel pipe-concrete composite pole comprises the following steps:
s1, preparing an electric pole mould, placing a stainless steel pipe in a lower mould of the electric pole mould, closing an upper mould of the electric pole mould, screwing down a screw, and assembling the mould for later use;
s2, calculating the using amount of each raw material for manufacturing a concrete layer according to the proportion, putting all cement, admixture and fine aggregate into a stirrer to be stirred for 60-120 seconds, then putting all water reducing agent and water into the stirrer to be stirred for 60-120 seconds, and finally putting coarse aggregate into the stirrer to be stirred for 30-90 seconds to obtain a concrete mixture with the slump of 40-180 mm;
s3, pumping the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in a pole mold in the step S1, and carrying out centrifugal molding to obtain the composite pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 40 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and placing the composite electric pole into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 3
Referring to fig. 1-2, the K-grade stainless steel tube-concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and a concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 4.0mm, and the thickness t2 of the concrete layer 200 is 65 mm.
In order to improve the interface bonding between the stainless steel pipe 100 and the concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The concrete layer 200 comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-to-glue ratio.
The preparation method of the stainless steel pipe-concrete composite pole comprises the following steps:
s1, preparing an electric pole mould, placing a stainless steel pipe in a lower mould of the electric pole mould, closing an upper mould of the electric pole mould, screwing down a screw, and assembling the mould for later use;
s2, calculating the using amount of each raw material for manufacturing a concrete layer according to the proportion, putting all cement, admixture and fine aggregate into a stirrer to be stirred for 60-120 seconds, then putting all water reducing agent and water into the stirrer to be stirred for 60-120 seconds, and finally putting coarse aggregate into the stirrer to be stirred for 30-90 seconds to obtain a concrete mixture with the slump of 40-180 mm;
s3, pumping the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in a pole mold in the step S1, and carrying out centrifugal molding to obtain the composite pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 40 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and placing the composite electric pole into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 4
Referring to fig. 3 to 4, the K-grade stainless steel tube-concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and a concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 4.0mm, and the thickness t2 of the concrete layer 200 is 65 mm.
In order to improve the interface bonding between the stainless steel pipe 100 and the concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The concrete layer 200 comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-to-glue ratio.
The preparation method of the stainless steel pipe-concrete composite pole comprises the following steps:
s1, preparing an electric pole mould, respectively placing two half pipes of a stainless steel pipe in an upper mould and a lower mould of the electric pole mould, closing the moulds, and assembling the moulds for later use;
s2, calculating the using amount of each raw material for manufacturing a concrete layer according to the proportion, putting all cement, admixture and fine aggregate into a stirrer to be stirred for 60-120 seconds, then putting all water reducing agent and water into the stirrer to be stirred for 60-120 seconds, and finally putting coarse aggregate into the stirrer to be stirred for 30-90 seconds to obtain a concrete mixture with the slump of 40-180 mm;
s3, pouring the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in the electric pole mold in the step S1, screwing down screws to lock the electric pole mold, and performing centrifugal forming to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 40 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and placing the composite electric pole into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 5
Referring to fig. 3 to 4, the M-grade stainless steel pipe-ultrahigh performance concrete composite electric pole with a slight diameter of 190mm and a length (L) of 12M comprises a stainless steel pipe 100 and an ultrahigh performance concrete layer 200 poured on the inner wall of the stainless steel pipe 100, wherein the thickness t1 of the stainless steel pipe 100 is 4.0mm, and the thickness t2 of the ultrahigh performance concrete layer 200 is 50 mm.
The stainless steel pipe 100 is composed of two half pipes split along the axis, two rows of preformed holes 110 with the aperture of 17mm are reserved in the stainless steel pipe 100 along the length direction, the row spacing between the preformed holes 110 is 250mm, stainless steel nuts 210 with the inner diameter of 17mm and the length of 50mm are welded on the inner wall of the stainless steel pipe corresponding to the preformed holes 110, the nuts 210 which are pre-buried in the ultra-high performance concrete layer 200 are used for fixing the ladder stand, and the ladder stand is connected with the nuts 210 which are reserved in the ultra-high performance concrete layer 200 through connecting pieces, such as bolts, penetrating through the preformed holes 110. It can be understood that the embedded nut 210 can also be used to fix other supporting members, and the embedded nut 210 can also be made of other materials with anti-corrosion function.
In order to improve the interface bonding between the stainless steel pipe 100 and the ultra-high performance concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The ultra-high performance concrete layer 200 comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
The preparation method of the stainless steel pipe-ultrahigh-performance concrete composite electric pole comprises the following steps:
s1, preparing an electric pole mould, respectively placing two half pipes of a stainless steel pipe in an upper mould and a lower mould of the electric pole mould, closing the moulds, screwing screws, and assembling the moulds for later use;
s2, calculating the using amount of each raw material for manufacturing the ultra-high performance concrete layer according to the proportion, putting all fine aggregate and steel fiber into a stirrer to be stirred for 60-120 seconds, then putting all cement and admixture into the stirrer to be stirred for 180-240 seconds, and finally putting all water reducing agent and water into the stirrer to be stirred for 360-600 seconds to obtain the ultra-high performance concrete mixture with slump of 160-240 mm;
s3, pumping the ultra-high performance concrete mixture obtained in the step S2 to a stainless steel pipe assembled in the electric pole mold in the step S1, locking the electric pole mold, and carrying out centrifugal forming to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 130 MPa, and the bending strength is not lower than 14 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the composite electric pole into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 6
Referring to fig. 3 to 4, the M-grade stainless steel pipe-ultrahigh performance concrete composite electric pole with a slight diameter of 190mm and a length (L) of 12M comprises a stainless steel pipe 100 and an ultrahigh performance concrete layer 200 poured on the inner wall of the stainless steel pipe 100, wherein the thickness t1 of the stainless steel pipe 100 is 2.5mm, and the thickness t2 of the ultrahigh performance concrete layer 200 is 20 mm.
The stainless steel pipe 100 is composed of two half pipes split along the axis, two rows of preformed holes 110 with the aperture of 14mm are reserved in the stainless steel pipe 100 along the length direction, the row spacing between the preformed holes 110 is 200mm, stainless steel nuts 210 with the inner diameter of 14mm and the length of 20mm are welded on the inner wall of the stainless steel pipe corresponding to the preformed holes 110, the nuts 210 which are pre-buried in the ultra-high performance concrete layer 200 in the embodiment are used for fixing the ladder stand, and the ladder stand is connected with the nuts 210 which are reserved in the ultra-high performance concrete layer 200 through connecting pieces, such as bolts, penetrating through the preformed holes 110. It can be understood that the embedded nut 210 can also be used to fix other supporting members, and the embedded nut 210 can also be made of other materials with anti-corrosion function.
In order to improve the interface bonding between the stainless steel pipe 100 and the ultra-high performance concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 20mm and the length is 6 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The ultra-high performance concrete layer 200 comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
The preparation method of the stainless steel pipe-ultrahigh-performance concrete composite electric pole comprises the following steps:
s1, preparing an electric pole mould, respectively placing two half pipes of a stainless steel pipe in an upper mould and a lower mould of the electric pole mould, closing the moulds, screwing screws, and assembling the moulds for later use;
s2, calculating the using amount of each raw material for manufacturing the ultra-high performance concrete layer according to the proportion, putting all fine aggregate and steel fiber into a stirrer to be stirred for 60-120 seconds, then putting all cement and admixture into the stirrer to be stirred for 180-240 seconds, and finally putting all water reducing agent and water into the stirrer to be stirred for 360-600 seconds to obtain the ultra-high performance concrete mixture with slump of 160-240 mm;
s3, pouring the ultra-high performance concrete mixture obtained in the step S2 into a stainless steel pipe assembled in the electric pole mold in the step S1, and then carrying out centrifugal molding to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 130 MPa, and the bending strength is not lower than 14 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the finished product end socket into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 7
Referring to fig. 3 to 4, the M-grade stainless steel pipe-ultrahigh-performance concrete composite electric pole with the slight diameter of 190mm and the length (L) of 12M comprises a stainless steel pipe 100 and an ultrahigh-performance concrete layer 200 poured on the inner wall of the stainless steel pipe 100, wherein the thickness t1 of the stainless steel pipe 100 is 5.5mm, and the thickness t2 of the ultrahigh-performance concrete layer 200 is 80 mm.
The stainless steel pipe 100 is composed of two half pipes split along the axis, two rows of preformed holes 110 with the aperture of 20mm are reserved in the stainless steel pipe 100 along the length direction, the row spacing between the preformed holes 110 is 300mm, stainless steel nuts 210 with the inner diameter of 20mm and the length of 80mm are welded on the inner wall of the stainless steel pipe corresponding to the preformed holes 110, the nuts 210 which are pre-buried in the ultra-high performance concrete layer 200 in the embodiment are used for fixing the ladder stand, and the ladder stand is connected with the nuts 210 which are reserved in the ultra-high performance concrete layer 200 through connecting pieces, such as bolts, penetrating through the preformed holes 110. It can be understood that the embedded nut 210 can also be used to fix other supporting members, and the embedded nut 210 can also be made of other materials with anti-corrosion function.
In order to improve the interface bonding between the stainless steel pipe 100 and the ultra-high performance concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 30mm and the length is 12 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The ultra-high performance concrete layer 200 comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
The preparation method of the stainless steel pipe-ultrahigh-performance concrete composite electric pole comprises the following steps:
s1, preparing an electric pole mould, respectively placing two half pipes of a stainless steel pipe in an upper mould and a lower mould of the electric pole mould, closing the moulds, screwing screws, and assembling the moulds for later use;
s2, calculating the using amount of each raw material for manufacturing the ultra-high performance concrete layer according to the proportion, putting all fine aggregate and steel fiber into a stirrer to be stirred for 60-120 seconds, then putting all cement and admixture into the stirrer to be stirred for 180-240 seconds, and finally putting all water reducing agent and water into the stirrer to be stirred for 360-600 seconds to obtain the ultra-high performance concrete mixture with slump of 160-240 mm;
s3, pouring the ultra-high performance concrete mixture obtained in the step S2 into a stainless steel pipe assembled in the electric pole mold in the step S1, and then carrying out centrifugal molding to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 130 MPa, and the bending strength is not lower than 14 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the finished product end socket into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 8
Referring to fig. 3 to 4, the K-grade stainless steel tube-ultrahigh performance concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and an ultrahigh performance concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 4.0mm, and the thickness t2 of the ultrahigh performance concrete layer 200 is 50 mm.
The stainless steel pipe 100 is composed of two half pipes split along the axis, two rows of preformed holes 110 with the aperture of 17mm are reserved in the stainless steel pipe 100 along the length direction, the row spacing between the preformed holes 110 is 250mm, stainless steel nuts 210 with the inner diameter of 17mm and the length of 50mm are welded on the inner wall of the stainless steel pipe corresponding to the preformed holes 110, the nuts 210 which are pre-buried in the ultra-high performance concrete layer 200 are used for fixing the ladder stand, and the ladder stand is connected with the nuts 210 which are reserved in the ultra-high performance concrete layer 200 through connecting pieces, such as bolts, penetrating through the preformed holes 110. It can be understood that the embedded nut 210 can also be used to fix other supporting members, and the embedded nut 210 can also be made of other materials with anti-corrosion function.
In order to improve the interface bonding between the stainless steel pipe 100 and the ultra-high performance concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The ultra-high performance concrete layer 200 comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
The preparation method of the stainless steel pipe-ultrahigh-performance concrete composite electric pole comprises the following steps:
s1, preparing an electric pole mould, respectively placing two half pipes of a stainless steel pipe in an upper mould and a lower mould of the electric pole mould, closing the moulds, screwing screws, and assembling the moulds for later use;
s2, calculating the using amount of each raw material for manufacturing the ultra-high performance concrete layer according to the proportion, putting all fine aggregate and steel fiber into a stirrer to be stirred for 60-120 seconds, then putting all cement and admixture into the stirrer to be stirred for 180-240 seconds, and finally putting all water reducing agent and water into the stirrer to be stirred for 360-600 seconds to obtain the ultra-high performance concrete mixture with slump of 160-240 mm;
s3, pouring the ultra-high performance concrete mixture obtained in the step S2 into a stainless steel pipe assembled in the electric pole mold in the step S1, and then carrying out centrifugal molding to obtain the composite electric pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 130 MPa, and the bending strength is not lower than 14 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the finished product end socket into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 9
Referring to fig. 1-2, the K-grade stainless steel pipe-ultrahigh performance concrete composite electric pole with the slight diameter of 190mm and the length (L) of 10m comprises a stainless steel pipe 100 and an ultrahigh performance concrete layer 200 poured on the inner wall of the stainless steel pipe 100, wherein the thickness t1 of the stainless steel pipe 100 is 4.0mm, and the thickness t2 of the ultrahigh performance concrete layer 200 is 50 mm.
Two rows of preformed holes 110 with the aperture of 17mm are reserved in the stainless steel pipe 100 along the length direction, the row spacing between the preformed holes 110 is 250mm, stainless steel nuts 210 with the inner diameter of 17mm and the length of 50mm are welded on the inner wall of the stainless steel pipe corresponding to the preformed holes 110, the nuts 210 which are pre-buried in the ultra-high performance concrete layer 200 are used for fixing the ladder stand, and the ladder stand is connected with the nuts 210 which are reserved in the ultra-high performance concrete layer 200 through connecting pieces such as bolts which penetrate through the preformed holes 110. It can be understood that the embedded nut 210 can also be used to fix other supporting members, and the embedded nut 210 can also be made of other materials with anti-corrosion function.
In order to improve the interface bonding between the stainless steel pipe 100 and the ultra-high performance concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The ultra-high performance concrete layer 200 comprises the following components in parts by weight: 40-70 parts of cement, 25-45 parts of admixture, 80-120 parts of fine aggregate, 8-22 parts of steel fiber and 1.8-3.6 parts of polycarboxylic acid water reducing agent.
The preparation method of the stainless steel pipe-ultrahigh-performance concrete composite electric pole comprises the following steps:
s1, preparing an electric pole mould, placing a stainless steel pipe in a lower mould of the electric pole mould, closing an upper mould of the electric pole mould, screwing down a screw, and assembling the mould for later use;
s2, calculating the using amount of each raw material for manufacturing the ultra-high performance concrete layer according to the proportion, putting all fine aggregate and steel fiber into a stirrer to be stirred for 60-120 seconds, then putting all cement and admixture into the stirrer to be stirred for 180-240 seconds, and finally putting all water reducing agent and water into the stirrer to be stirred for 360-600 seconds to obtain the ultra-high performance concrete mixture with slump of 160-240 mm;
s3, pumping the ultra-high performance concrete mixture obtained in the step S2 into a stainless steel pipe assembled in a pole mold in the step S1, and then carrying out centrifugal molding to obtain the composite pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 130 MPa, and the bending strength is not lower than 14 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the finished product end socket into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Example 10
Referring to fig. 1-2, the K-grade stainless steel tube-concrete composite electric pole with a slight diameter of 190mm and a length (L) of 10m comprises a stainless steel tube 100 and a concrete layer 200 poured on the inner wall of the stainless steel tube 100, wherein the thickness t1 of the stainless steel tube 100 is 4.0mm, and the thickness t2 of the concrete layer 200 is 65 mm.
In order to improve the interface bonding between the stainless steel pipe 100 and the concrete layer 200, rows of shear nails 120 are arranged on the inner wall of the stainless steel pipe 100, and the row spacing between the shear nails 120 is 25mm and the length is 9 mm. It is understood that the shear pins 120 may be connected to the inner wall of the stainless steel pipe 100 by welding or the like.
The concrete layer 200 comprises the following components in parts by weight: 25-50 parts of cement, 10-20 parts of admixture, 50-70 parts of fine aggregate, 90-110 parts of coarse aggregate, 0.8-1.4 parts of polycarboxylic acid water reducing agent and 0.28-0.42 of water-to-glue ratio.
The preparation method of the stainless steel pipe-concrete composite pole comprises the following steps:
s1, preparing an electric pole mould, placing a stainless steel pipe in a lower mould of the electric pole mould, closing an upper mould of the electric pole mould, screwing down a screw, and assembling the mould for later use;
s2, calculating the using amount of each raw material for manufacturing a concrete layer according to the proportion, putting all cement, admixture and fine aggregate into a stirrer to be stirred for 60-120 seconds, then putting all water reducing agent and water into the stirrer to be stirred for 60-120 seconds, and finally putting coarse aggregate into the stirrer to be stirred for 30-90 seconds to obtain a concrete mixture with the slump of 40-180 mm;
s3, pumping the concrete mixture obtained in the step S2 into a stainless steel pipe assembled in a pole mold in the step S1, and then carrying out centrifugal molding to obtain the composite pole with the mold;
s4, standing the composite electric pole with the mould obtained in the step S3 at room temperature for 1-2 hours, and putting the composite electric pole into a curing kiln at the temperature of 80-90 ℃ for steam curing for 8-16 hours, wherein the compressive strength is not lower than 40 MPa;
and S5, demolding the composite electric pole subjected to steam curing in the step S4, and then placing the finished product end socket into a storage yard for natural curing for 7-14 days.
It is understood that in the above preparation method, the order of steps S1 to S2 may be arbitrarily changed.
Comparative example 1
A class K concrete pole having a tip diameter of 190mm and a length of 10m and a method for manufacturing the same were as in example 1 except that no stainless steel tube was used.
Comparative example 2
A K-grade concrete pole with a small diameter of 190mm and a length of 10m and a preparation method thereof are the same as those in the embodiment 1 except that no shear nails are arranged on the inner wall of a stainless steel pipe.
Comparative example 3
An M-grade ultra-high performance concrete pole with a small diameter of 190mm and a length of 12M and a preparation method thereof are the same as those in example 6 except that no stainless steel tube is arranged.
Comparative example 4
An M-grade ultrahigh-performance concrete pole with a slightly larger diameter of 190mm and a length of 12M and a preparation method thereof are the same as those in the embodiment 6 except that no shear nails are arranged on the inner wall of a stainless steel pipe.
The performance of the stainless steel pipe composite electric poles prepared in the examples 1 to 10 and the comparative examples 1 to 4 was tested according to GB4623-2014 "annular concrete pole", and the test results are shown in table 1.
Table 1 mechanical property test results of stainless steel tube composite electric pole
From table 1, comparative example 1 has no stainless steel pipe, and compared with example 1, the bearing capacity bending moment is reduced more, and the crack width and deflection deformation are increased more; comparative example 2 the stainless steel pipe has no shear nails on the inner wall, compared with example 1, the bearing force and bending moment are reduced more, the appearance cracks are basically unchanged, and the deflection deformation is increased more; comparative example 3 has no stainless steel pipe, and compared with example 6, the bearing capacity bending moment is reduced more, and the crack width and deflection deformation are increased more; comparative example 4 the stainless steel pipe has no shear nails on the inner wall, and compared with example 6, the bearing force and bending moment are reduced more, the appearance cracks are basically unchanged, and the deflection deformation is increased more. Through a large number of tests, the stainless steel outer tube is combined with concrete, so that the rigidity and the bearing force bending moment of the composite electric pole are improved, and the mechanical property of the electric pole is improved; the shear nails improve the interface binding force of the stainless steel and the concrete and improve the mechanical property of the electric pole.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a compound pole of nonrust steel pipe which characterized in that, includes nonrust steel pipe and pours the concrete layer of the hollow of shaping in nonrust steel pipe, be equipped with a plurality of shear force nails that extend to in the concrete layer on the inner wall of nonrust steel pipe.
2. The stainless steel tubular composite pole as recited in claim 1, wherein said shear pins are arranged in rows on the inner wall of the stainless steel tube.
3. The stainless steel pipe composite electric pole as recited in claim 2, wherein the row pitch of the shear nails is 20-30 mm.
4. The stainless steel pipe composite electric pole as recited in any one of claims 1 to 3, wherein the length of the shear nail is 6 to 12 mm.
5. The stainless steel pipe composite electric pole as recited in claim 1, wherein the thickness of the stainless steel pipe is 2.5-5.5 mm.
6. The stainless steel tube composite electric pole as recited in claim 1, wherein said stainless steel tube is an integrally formed cylindrical tube or conical tube, or said stainless steel tube is a cylindrical tube or conical tube composed of two half tubes split along the axial center.
7. The stainless steel tubular composite pole as recited in claim 1, wherein said concrete layer is made of ordinary concrete or ultra high performance concrete.
8. The stainless steel pipe composite electric pole as recited in claim 1, wherein the thickness of the concrete layer is 20-100 mm.
9. The stainless steel tube composite electric pole as recited in claim 8, wherein rows of prepared holes are prepared in the stainless steel tube along the length direction, and nuts are welded on the inner wall of the stainless steel tube corresponding to the prepared holes.
10. The stainless steel pipe composite electric pole as recited in claim 9, wherein the aperture of the prepared hole is 14-20 mm, and the pitch is 200-300 mm; and/or the inner diameter of the nut is 14-20 mm, and the length of the nut is 20-100 mm.
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