CN110952587A - Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile - Google Patents

Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile Download PDF

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Publication number
CN110952587A
CN110952587A CN201911366863.XA CN201911366863A CN110952587A CN 110952587 A CN110952587 A CN 110952587A CN 201911366863 A CN201911366863 A CN 201911366863A CN 110952587 A CN110952587 A CN 110952587A
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CN
China
Prior art keywords
channel
pole
cement
mixing pile
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911366863.XA
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Chinese (zh)
Inventor
李海峰
郭从明
赵昊裔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Electric SA
Wisdri Engineering and Research Incorporation Ltd
Wisdri Urban Construction Engineering Technology Co Ltd
Original Assignee
Johnson Electric SA
Wisdri Urban Construction Engineering Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Electric SA, Wisdri Urban Construction Engineering Technology Co Ltd filed Critical Johnson Electric SA
Priority to CN201911366863.XA priority Critical patent/CN110952587A/en
Publication of CN110952587A publication Critical patent/CN110952587A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D37/00Repair of damaged foundations or foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

A device and a method for reinforcing an electric pole foundation in a channel with stiff cement soil mixing piles relate to the field of electric pole reinforcement of a power distribution network. This pole foundation reinforcing apparatus in channel of strength nature cement mixing stake is used for consolidating the pole that the bottom is located the channel, it includes three at least cement mixing stakes of locating in the channel diapire, I-steel and the concrete fender mound with cement mixing stake one-to-one, cement mixing stake is arranged along the circumference of pole, the top of I-steel runs through out the cement mixing stake that corresponds, fixed cover is equipped with two at least chucks on the pole, every chuck all passes through the steel member with each I-steel and is connected, the bottom of pole and the partly of I-steel are located the concrete respectively and protect the mound. The application provides a reinforcing apparatus and method for foundation of electric pole in channel of strength nature cement mixing pile can reliably bear the weight of electric pole and area is less for a long time, does not influence the power supply continuity of electric pole and the aesthetic property of channel.

Description

Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile
Technical Field
The application relates to the field of power distribution network electric pole reinforcement, in particular to a device and a method for reinforcing an electric pole foundation in a channel with stiff cement-soil mixing piles.
Background
In distribution lines spanning wider channels, there are typically utility poles disposed within or adjacent to the channels. When needs deepen or widen the channel, the pole buried depth can reduce to some extent and can appear the pole bottom and be higher than the condition of new canal bottom design elevation even, and the original basis of pole often is difficult to satisfy the settlement and the antidumping requirement of pole, for this reason is necessary to carry out reinforcement treatment to its basis. The foundation of pole soaks in aqueous in the long-term when normal use in the channel, and conventional pole foundation reinforcement technique (if set up prevent wind guy, build and protect the mound, increase pole sleeve etc.) is not suitable for pole foundation reinforcement in the channel because of taking up an area of more, the pole topples easily in the work progress and need shortcomings such as power failure construction.
Therefore, there is a need for a channel pole foundation reinforcing device which occupies a small area, is safe and reliable for the pole in the construction process and does not need power failure construction.
Disclosure of Invention
The application aims to provide a reinforcing device and method for a pole foundation in a channel with a stiff cement-soil mixing pile, which can reliably bear the pole for a long time and have small occupied area, and the power supply continuity of the pole and the attractiveness of the channel are not affected.
The embodiment of the application is realized as follows:
first aspect, this application embodiment provides a take pole basis reinforcing apparatus in channel of strength nature cement mixing stake, a pole for the reinforcement bottom is located the channel, it includes three at least cement mixing stakes of locating in the channel diapire, with the I-steel and the concrete fender mound of cement mixing stake one-to-one, cement mixing stake is arranged along the circumference of pole, the top of I-steel runs through the corresponding cement mixing stake, fixed cover is equipped with two at least chucks on the pole, every chuck all passes through the steel member with each I-steel and is connected, the bottom of pole and a part of I-steel are located the concrete fender mound respectively.
In some optional embodiments, the bottom of the I-shaped steel is flush with the bottom of the corresponding cement-soil mixing pile, and the distance between the top of the I-shaped steel and the ground is more than 1 m.
In some alternative embodiments, the bottom wall of the concrete pier and the bottom wall of the channel are flush.
In some alternative embodiments, the top wall of the soil cement mixing pile and the bottom wall of the channel are flush.
In some alternative embodiments, the strong axis of the i-steel passes through the axis of the pole.
In a second aspect, an embodiment of the present application provides a method for reinforcing a foundation of an electric pole in a channel, where the method includes the following steps:
at least three cement soil mixing piles arranged along the circumferential direction of the pole are driven into the bottom wall of the channel at the periphery of the pole;
inserting corresponding I-shaped steel before each cement soil mixing pile is hardened;
installing at least two chucks on the electric pole, and fixedly connecting each chuck with at least three I-shaped steels by using a steel member after the cement-soil mixing pile is hardened;
treat channel excavation to design elevation to the pole is the center concreting and protects the mound, makes the bottom of pole and the partly of I-steel be located the concrete respectively and protects the mound.
In some alternative embodiments, the top wall of the cement mixing piles and the bottom wall of the canal are flush when the cement mixing piles are driven into the bottom wall of the canal around the pole.
In some optional embodiments, when the corresponding i-shaped steel is inserted into the cement-soil mixing pile, the bottom of the i-shaped steel is flush with the bottom of the corresponding cement-soil mixing pile, and the distance between the top of the i-shaped steel and the ground is more than 1 m.
In some alternative embodiments, the concrete pier is cast such that the bottom wall of the concrete pier is flush with the bottom wall of the channel.
In some alternative embodiments, the concrete pier is cast centering on the pole and after the strength of the concrete pier reaches the design value, the steel member and the chucks are removed and the i-steel is cut off along the top or side of the concrete pier.
The beneficial effect of this application is: the pole basis reinforcing apparatus in channel of strength nature cement mixing stake that this embodiment provided is used for consolidating the pole that the bottom is located the channel, it includes three at least cement mixing stakes of locating in the channel diapire, I-steel and the concrete fender mound with cement mixing stake one-to-one, cement mixing stake is arranged along the circumference of pole, the top of I-steel runs through the cement mixing stake of wearing out correspondence, fixed cover is equipped with two at least chucks on the pole, every chuck all passes through the steel member with each I-steel and is connected, the bottom of pole and the partly of I-steel are located the concrete respectively and protect the mound. The embodiment of the application also provides a method for reinforcing the foundation of the electric pole in the channel with the stiff cement-soil mixing piles, which is characterized in that at least three cement-soil mixing piles arranged along the circumferential direction of the electric pole are driven into the bottom wall of the channel at the periphery of the electric pole; inserting corresponding I-shaped steel before each cement soil mixing pile is hardened; installing at least two chucks on the electric pole, and fixedly connecting each chuck with at least three I-shaped steels by using a steel member after the cement-soil mixing pile is hardened; treat channel excavation to design elevation to the pole is the center concreting and protects the mound, makes the bottom of pole and the partly of I-steel be located the concrete respectively and protects the mound. The application provides a reinforcing apparatus and method for foundation of electric pole in channel of strength nature cement mixing pile can reliably bear the weight of electric pole and area is less for a long time, does not influence the power supply continuity of electric pole and the aesthetic property of channel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first view angle of a pole foundation reinforcing device in a channel of a forced cement-soil mixing pile according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a second view angle of the pole foundation reinforcing device in the channel of the forced cemented soil mixing pile provided by the embodiment of the application.
In the figure: 100. an electric pole; 110. mixing the cement soil with the pile; 120. i-shaped steel; 121. a wing plate; 122. a web; 130. a chuck; 140. a steel member; 150. concrete pier protection; 200. and (4) a channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The characteristics and properties of the device and method for reinforcing the foundation of the electric pole in the channel with the stiff cement-soil mixing piles according to the present application will be further described in detail with reference to the following embodiments.
As shown in fig. 1 and 2, the embodiment of the present application provides a channel inner pole foundation reinforcing device with a stiff cement mixing pile, which is used for reinforcing an electric pole 100 with the bottom located in a channel 200, and includes three cement mixing piles 110 located in the bottom wall of the channel 200, i-shaped steels 120 corresponding to the cement mixing piles 110 one by one, and concrete piers 150, wherein the cement mixing piles 110 are arranged along the circumferential direction of the electric pole 100, the i-shaped steels 120 are vertically arranged, and the tops of the i-shaped steels penetrate through the corresponding cement mixing piles 110, the strong axis of each i-shaped steel 120 penetrates through the axis of the electric pole 100, two chucks 130 are fixedly sleeved on the electric pole 100, each chuck 130 is welded with the three i-shaped steels 120 through three steel members 140, the bottom of the electric pole 100 and a part of the i-shaped steel 120 are located in the concrete piers 150, the bottoms of the i-shaped steels 120 are flush with the bottoms of the corresponding cement mixing piles 110, the distance between the top of the I-shaped steel 120 and the ground is 1.5m, the bottom wall of the concrete pier 150 is flush with the bottom wall of the channel 200, and the top wall of the cement mixing pile 110 is flush with the bottom wall of the channel 200.
The utility model provides a reinforcement device for foundation of electric pole in channel of strength nature cement mixing pile is through setting up the cement mixing pile 110 who pours into in channel 200 diapire around electric pole 100, and establish vertical arrangement and I-steel 120 of one-to-one in cement mixing pile 110 interpolation, fixed cover establishes chuck 130 and connect chuck 130 remaining each I-steel 120 respectively through steel member 140 on electric pole 100, and pour concrete fender mound 150 in order to wrap up electric pole 100 and each I-steel 120 in the bottom of electric pole 100, thereby connect electric pole 100, three I-steel 120 and the cement mixing pile 110 who pours into in channel 200 diapire into a whole, effectual improvement electric pole 100 and cement mixing pile 110, the stability of I-steel 120, and utilize the cement mixing pile 110 in channel 200 diapire to improve long-term reliable bearing capacity, avoid the influence of flow brushing effect in channel 200 to the stability of electric pole 100 and reduce electric pole 100 take place excessively to subside in the construction process and can topple Can, need not to remove pole 100 simultaneously in the work progress for the power supply continuity of pole 100 and distribution lines is not influenced, and area is less, does not influence the aesthetic property of pole 100 and channel 200.
The embodiment of the application also provides a method for reinforcing the foundation of the electric pole in the channel with the stiff cement-soil mixing piles, which comprises the following steps:
three cement-soil mixing piles 110 arranged along the circumferential direction are driven into the bottom wall of the channel 200 at the periphery of the electric pole 100, so that the top wall of the cement-soil mixing pile 110 and the bottom wall of the channel 200 have the same elevation;
before the cement-soil mixing piles 110 are hardened, a vertically-arranged I-shaped steel 120 is inserted into each cement-soil mixing pile 110, the strong shaft of each I-shaped steel 120 penetrates through the axis of the electric pole 100, and the distance between the top end of each I-shaped steel 120 and the ground is 1.5 m;
after the cement mixing pile 110 is hardened, 2 chucks 130 arranged at intervals in the height direction are installed on the electric pole 100, and each chuck 130 and three i-beams 120 are welded and fixed through three steel members 140;
when the channel 200 is excavated to the designed elevation, pouring the concrete pier 150 by taking the electric pole 100 as the center, so that the bottom of the electric pole 100 and a part of the I-shaped steel 120 are respectively positioned in the concrete pier 150, and the bottom wall of the concrete pier 150 is flush with the bottom wall of the channel 200;
after the strength of the concrete pier 150 reaches a design value, the steel member 140 and the chucks 130 are removed and the i-steel 120 is cut along the top surface of the concrete pier 150.
According to the method for reinforcing the foundation of the electric pole in the channel of the strong cement-soil mixing pile, the cement-soil mixing piles 110 arranged along the circumferential direction of the electric pole 100 are firstly driven into the bottom wall of the channel 200 at the periphery of the electric pole 100, then the I-shaped steel 120 is inserted when the cement-soil mixing piles 110 are not solidified, the two chucks 130 and the three steel members 140 corresponding to the chucks 130 are used for connecting the three I-shaped steel 120 after the cement-soil mixing piles 110 are solidified, and finally the electric pole 100 and the I-shaped steel 120 are connected into a whole by adopting the method of pouring the concrete pier 150, so that the structural stability of the electric pole 100 is effectively improved, the phenomenon that the electric pole 100 is excessively settled and overturned in the construction process due to moisture in the channel 200 is avoided, and the power supply continuity of the electric pole 100 cannot be influenced in the construction.
The I-steel 120 is composed of two wing plates 121 and a web plate 122 connecting the two wing plates 121, and the strong axis of the I-steel 120 is a neutral axis parallel to the wing plates 121.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (10)

1. The utility model provides a take pole foundation reinforcing apparatus in channel of strength nature cement mixing pile for consolidate the pole that the bottom is located the channel, its characterized in that, it includes three at least locates cement mixing pile in the channel diapire, with the I-steel and the concrete fender mound of cement mixing pile one-to-one, cement mixing pile follows the circumference of pole is arranged, the top of I-steel runs through out and corresponds cement mixing pile, fixed cover is equipped with two at least chucks on the pole, every the chuck all with each the I-steel passes through the steel member and connects, the bottom of pole with a part of I-steel is located respectively in the concrete fender mound.
2. The channel inner electric pole foundation reinforcing device for the forced cement-soil mixing pile according to claim 1, wherein the bottom of the I-shaped steel is flush with the bottom of the corresponding cement-soil mixing pile, and the distance between the top of the I-shaped steel and the ground is more than 1 m.
3. The reinforcement of a pole foundation in a channel of a forced cemented soil mixing pile of claim 1, wherein the bottom wall of the concrete pier and the bottom wall of the channel are flush.
4. The reinforcement of the foundation of the electric pole in a channel of a forced soil cement mixing pile according to claim 1, wherein the top wall of the soil cement mixing pile is flush with the bottom wall of the channel.
5. The reinforcement device for foundation of electric pole in channel of forced cement-soil mixing pile according to claim 1, characterized in that the strong axis of said I-steel is passing through the axis of said electric pole.
6. A method for reinforcing a pole foundation in a channel with a stiff cement-soil mixing pile is characterized by comprising the following steps:
at least three cement soil mixing piles arranged along the circumferential direction of the pole are driven into the bottom wall of the channel at the periphery of the pole;
inserting corresponding I-shaped steel before each cement soil mixing pile is hardened;
installing at least two chucks on the electric pole, and fixedly connecting each chuck with at least three I-shaped steels by using a steel member after the cement-soil mixing pile is hardened;
treat channel excavation to design elevation to the pole is concrete fender mound as the center pouring, makes the bottom of pole with some of I-steel are located respectively in the concrete fender mound.
7. The method for reinforcing a foundation of an electric pole in a channel of a forced soil cement mixing pile according to claim 6, wherein when the soil cement mixing pile is driven into the bottom wall of the channel around the electric pole, the top wall of the soil cement mixing pile is flush with the bottom wall of the channel.
8. The method for reinforcing the foundation of the electric pole in the channel of the forced cement-soil mixing pile according to claim 6, wherein when the corresponding I-shaped steel is inserted into the cement-soil mixing pile, the bottom of the I-shaped steel is aligned with the bottom of the corresponding cement-soil mixing pile, and the distance between the top of the I-shaped steel and the ground is more than 1 m.
9. The method for reinforcing a pole foundation in a channel of a forced cemented soil mixing pile according to claim 6, wherein the concrete pier is cast such that the bottom wall of the concrete pier is flush with the bottom wall of the channel.
10. The method for reinforcing an electric pole foundation in a channel of a forced cement-soil mixing pile according to claim 6, wherein a concrete pier is cast centering on the electric pole and after the strength of the concrete pier reaches a design value, the steel member and the chucks are removed and the I-steel is cut along the top surface or the side surface of the concrete pier.
CN201911366863.XA 2019-12-26 2019-12-26 Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile Pending CN110952587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911366863.XA CN110952587A (en) 2019-12-26 2019-12-26 Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911366863.XA CN110952587A (en) 2019-12-26 2019-12-26 Device and method for reinforcing electric pole foundation in channel of forced cement soil mixing pile

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Publication Number Publication Date
CN110952587A true CN110952587A (en) 2020-04-03

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532812A (en) * 1978-08-28 1980-03-07 Dainichi Concrete Kogyo Kk Huge pole foundation practice
CN104775630A (en) * 2015-04-20 2015-07-15 国网湖北省电力公司咸宁供电公司 Method for removing old poles and old lines by using guy-wire side-angle swinging
CN205725581U (en) * 2016-06-30 2016-11-23 珠海德光源集团有限公司 Anti-settling pile foundation under water and photovoltaic flexible support system
CN206309102U (en) * 2016-12-06 2017-07-07 中国电信股份有限公司广州分公司 A kind of strutting of pole component
CN207277361U (en) * 2017-09-26 2018-04-27 广东电网有限责任公司惠州供电局 The windproof bracing means of pole-foundation in a kind of power distribution network
CN208523396U (en) * 2018-07-09 2019-02-22 陕西意景园林设计工程有限公司 A kind of municipal administration afforestation project tree support frame
CN208549458U (en) * 2018-06-29 2019-03-01 中国一冶集团有限公司 Nursery stock bracing reinforcement device
CN208820424U (en) * 2018-11-13 2019-05-03 中国核工业华兴建设有限公司 A kind of electromechanical installation cable stringer of building
CN110359754A (en) * 2019-07-23 2019-10-22 龚会萍 A kind of concrete tubular pile
CN209704149U (en) * 2019-01-16 2019-11-29 河南中力杆塔股份有限公司 A kind of overturning-preventing electric pole

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532812A (en) * 1978-08-28 1980-03-07 Dainichi Concrete Kogyo Kk Huge pole foundation practice
CN104775630A (en) * 2015-04-20 2015-07-15 国网湖北省电力公司咸宁供电公司 Method for removing old poles and old lines by using guy-wire side-angle swinging
CN205725581U (en) * 2016-06-30 2016-11-23 珠海德光源集团有限公司 Anti-settling pile foundation under water and photovoltaic flexible support system
CN206309102U (en) * 2016-12-06 2017-07-07 中国电信股份有限公司广州分公司 A kind of strutting of pole component
CN207277361U (en) * 2017-09-26 2018-04-27 广东电网有限责任公司惠州供电局 The windproof bracing means of pole-foundation in a kind of power distribution network
CN208549458U (en) * 2018-06-29 2019-03-01 中国一冶集团有限公司 Nursery stock bracing reinforcement device
CN208523396U (en) * 2018-07-09 2019-02-22 陕西意景园林设计工程有限公司 A kind of municipal administration afforestation project tree support frame
CN208820424U (en) * 2018-11-13 2019-05-03 中国核工业华兴建设有限公司 A kind of electromechanical installation cable stringer of building
CN209704149U (en) * 2019-01-16 2019-11-29 河南中力杆塔股份有限公司 A kind of overturning-preventing electric pole
CN110359754A (en) * 2019-07-23 2019-10-22 龚会萍 A kind of concrete tubular pile

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