CN115404900A - Pole tower pile foundation of power transmission line and construction method thereof - Google Patents
Pole tower pile foundation of power transmission line and construction method thereof Download PDFInfo
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- CN115404900A CN115404900A CN202211261835.3A CN202211261835A CN115404900A CN 115404900 A CN115404900 A CN 115404900A CN 202211261835 A CN202211261835 A CN 202211261835A CN 115404900 A CN115404900 A CN 115404900A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
Abstract
The invention discloses a tower pile foundation of a power transmission line and a construction method thereof, and relates to the technical field of power grid equipment. A tower pile foundation of a power transmission line comprises: prefabricating a tubular pile main body, short reinforcing steel bars, core filling concrete, foundation bolts and concrete; the precast tubular pile main body is of a hollow structure, and the core filling concrete and the concrete are filled into the hollow part of the precast tubular pile main body; the short steel bars are pre-buried and anchored at one end, close to the ground, of the precast tubular pile main body, and extend towards the hollow part of the precast tubular pile main body; the foundation bolt is fixedly arranged at one end, close to the ground, of the precast tubular pile main body. According to the tower pile foundation of the power transmission line and the construction method thereof provided by the embodiment of the invention, the anchoring short steel bars are embedded in the prefabricated pipe pile main body to reinforce the bonding force between the concrete and the prefabricated pipe pile main body, so that the stability of the tower of the power transmission line is ensured.
Description
Technical Field
The invention relates to the technical field of power grid equipment, in particular to a tower pile foundation of a power transmission line and a construction method thereof.
Background
The prefabricated concrete pipe pile foundation is an excellent foundation type of an overhead transmission line tower, has the advantages of high foundation pile bearing capacity, low unit bearing capacity manufacturing cost, high construction speed, high pile forming quality, safety, reliability and the like, accords with a green construction idea, is beneficial to promoting the transformation and upgrading of the construction of a power transmission and transformation project from a traditional mode to a green construction mode, constructs a novel clean low-carbon, safe and efficient power system, and realizes the green sustainable development of a power grid.
The anchoring anchor bolt of the concrete precast tubular pile foundation in the single pile type generally adopts two forms: firstly, after pile sinking and core filling are generally completed, a concrete bearing platform is cast in situ, and foundation bolts are anchored in the bearing platform after accurate positioning; and secondly, welding a section of steel cylinder with an operation hole and a connecting steel plate on the pile top of the concrete precast tubular pile in advance, accurately positioning and determining the position of the foundation bolt according to the opening size of the iron tower after pile sinking is finished, forming a hole on the corresponding position on site, and fixing the iron tower anchor bolt by using the operation hole after the iron tower is in place. However, the first method has the advantages of reducing the environmental protection of the pile foundation to a certain extent due to the field excavation and concrete pouring operation. In the second method, a steel cylinder and a steel plate connecting piece with large weight need to be welded at the pile end in advance, and the operation of perforating the thick steel plate on site is also needed, so that great construction difficulty exists, and the anticorrosion treatment of the site perforating is also difficult.
Disclosure of Invention
The embodiment of the invention aims to provide a tower pile foundation of a power transmission line, which ensures the stability of a tower of the power transmission line by pre-burying anchoring short steel bars in a prefabricated pipe pile main body to reinforce the bonding force between concrete and the prefabricated pipe pile main body.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a tower pile foundation of a power transmission line, which comprises: prefabricating a tubular pile main body, short reinforcing steel bars, core filling concrete, foundation bolts and concrete; the precast tubular pile main body is of a hollow structure, and the core filling concrete and the concrete are filled into the hollow part of the precast tubular pile main body; the short steel bars are pre-buried and anchored at one end, close to the ground, of the precast tubular pile main body, and extend towards the hollow part of the precast tubular pile main body; the foundation bolt is fixedly arranged at one end, close to the ground, of the precast tubular pile main body.
In some embodiments, the core concrete is filled at one end of the precast tubular pile body far away from the ground; the concrete is filled in one end, close to the ground, of the precast tubular pile main body.
In some embodiments, the short reinforcing bars and the concrete are both disposed at the same position in the precast tubular pile body.
In some embodiments, the length of the anchor bolt in the precast tubular pile body is less than the height of the concrete filled in the hollow part of the precast tubular pile body.
In some embodiments, the ends of the anchor bolts protrude out of the upper surface of the precast tubular pile body.
In some embodiments, the short reinforcing steel bars are arranged in the precast tubular pile main body in a multi-layer distribution mode, the spacing distances between any two adjacent layers are the same, and each layer is provided with a plurality of short reinforcing steel bars.
In some embodiments, the short bars are offset from each other at positions provided between any adjacent two layers.
The invention also provides a construction method of the tower pile foundation of the power transmission line, which comprises the following steps:
embedding an anchoring short steel bar at one end of the precast tubular pile main body close to the ground;
sinking the precast tubular pile main body;
filling core filling concrete into the precast tubular pile main body to a certain height;
accurately positioning and fixing foundation bolts at one end, close to the ground, of the precast tubular pile main body;
pouring concrete in the precast tubular pile main body and tamping, vibrating and compacting;
and finishing the maintenance of the concrete.
In some embodiments, filling core concrete into the precast tubular pile body to a certain height; the height of the unfilled core concrete is greater than the length of the anchor bolt anchored in the precast tubular pile body.
The technical scheme includes that a tower pile foundation for a power transmission line is disclosed in a patent document with an authorization notice number of CN204590062U, the scheme includes a bearing platform formed by reinforced concrete secondary pouring and a prefabricated reinforced concrete single pile fixed at the lower end of the bearing platform through primary pouring, the top surface of the bearing platform is perpendicular to the axis of the prefabricated reinforced concrete single pile, the upper end of the prefabricated reinforced concrete single pile is a connecting section, the lower end of the prefabricated reinforced concrete single pile is a bearing section, the connecting section is embedded in the bearing platform, the lower surface of the connecting section is parallel to the lower surface of the bearing platform, concrete I is poured in the bearing platform, and concrete II is poured in the bearing section of the prefabricated reinforced concrete single pile; an anchor bolt is prefabricated in the bearing platform, and the end part of the anchor bolt extends out of the upper surface of the bearing platform. However, this patent document has a concrete pouring work and cannot meet the environmental requirements.
According to the pole tower pile foundation of the power transmission line, the binding force between the concrete and the precast tubular pile main body is enhanced by embedding and anchoring the short steel bars in the precast tubular pile main body, the binding force between the foundation bolt and the precast tubular pile main body is also enhanced, when acting force is transmitted by the upper pole tower, the acting force can be transmitted to the foundation bolt by the pole tower and then transmitted to the concrete through the foundation bolt, the short steel bars are arranged around the concrete, and finally the acting force is transmitted to the precast tubular pile main body through the short steel bars, so that the requirements of acting force of pulling up and pressing down the foundation of the pole tower are met, and the stability of the pole tower of the power transmission line is further ensured.
The foundation bolt anchoring construction process is consistent with the form of a common pole tower foundation, is quick in construction, low in cost and mature in process mode, facilitates quick popularization of a pole tower pile foundation of a power transmission line, and accelerates the promotion of green construction technology of the power transmission line and the level of energy conservation and environmental protection.
Drawings
In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to the drawings. Furthermore, the drawings in the following description may be considered as schematic drawings, and do not limit the actual size of products, the actual flow of methods, and the like, involved in the embodiments of the present disclosure.
Fig. 1 is a cross-sectional view of a tower pile foundation of a power transmission line according to some embodiments of the present disclosure;
fig. 2 is a top view of a tower pile foundation of a power transmission line in some embodiments according to the present disclosure.
Detailed Description
The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.
Throughout the specification and claims, the term "comprising" is to be interpreted in an open, inclusive sense, i.e., as "including, but not limited to," unless the context requires otherwise. In the description herein, the terms "one embodiment," "some embodiments," "an example embodiment," "an example" or "some examples" or the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.
An embodiment of the present invention provides a tower pile foundation of a power transmission line, as shown in fig. 1, including: the prefabricated pipe pile comprises a prefabricated pipe pile main body 1, short reinforcing steel bars 2, core filling concrete 3, foundation bolts 4 and concrete 5.
In some embodiments, as shown in fig. 1, the precast tubular pile body 1 is a hollow structure, and the core concrete 3 and the concrete 5 are filled into the hollow portion of the precast tubular pile body 1.
Illustratively, as shown in fig. 2, the precast tubular pile body 1 is made of reinforced concrete, has a cylindrical structure, and has a hollow structure inside, the core concrete 3 and the concrete 5 can be filled into the hollow structure of the precast tubular pile body 1, and both fill the hollow structure of the precast tubular pile body 1, that is, the hollow structure of the precast tubular pile body 1 is divided into two parts, one part is filled with the core concrete 3, and the other part is filled with the concrete 5.
Concrete 5 is illustratively C30 concrete.
In some embodiments, as shown in fig. 1, the short steel bar 2 is pre-embedded and anchored in one end of the precast tubular pile body 1 close to the ground D, the short steel bar 2 extends towards the hollow portion of the precast tubular pile body 1, and the anchor bolt 4 is fixedly arranged at one end of the precast tubular pile body 1 close to the ground D. The towers of the transmission line are connected through foundation bolts 4.
In some examples, the length of the short steel bar 2 anchored into the precast tubular pile body 1 and the reserved anchoring length should be greater than 15D (D is the diameter of the steel bar). Like this, can guarantee that the effort that upper portion shaft tower transmitted transmits through the reliable transmission of short reinforcement 2 for precast tubular pile main part 1, and then guarantee the steadiness of shaft tower.
In some embodiments, the number and type of short bars 2 are verified as the bar shear stress:
wherein: tau is b Ultimate shearStress, n-safety factor, A-section area of reinforcing bar, F Q -force, [ tau ]]Allowable shear stress.
According to the pole tower pile foundation of the power transmission line, the binding force between the concrete and the precast tubular pile main body is enhanced by embedding and anchoring the short steel bars in the precast tubular pile main body, the binding force between the foundation bolt and the precast tubular pile main body is also enhanced, when acting force is transmitted by the upper pole tower, the acting force can be transmitted to the foundation bolt by the pole tower and then transmitted to the concrete through the foundation bolt, the short steel bars are arranged around the concrete, and finally the acting force is transmitted to the precast tubular pile main body through the short steel bars, so that the requirements of acting force of pulling up and pressing down the foundation of the pole tower are met, and the stability of the pole tower of the power transmission line is further ensured.
In some embodiments, as shown in fig. 1, the core concrete 3 is filled at an end of the precast tubular pile body 1 far from the ground D, and the concrete 5 is filled at an end of the precast tubular pile body 1 near the ground D.
Illustratively, as shown in fig. 1, the precast tubular pile body 1 is sunk underground, most of the precast tubular pile body 1 is arranged below the ground D, a small part of the precast tubular pile body 1 is arranged above the ground D, and anchor bolts 4 are anchored in concrete 5.
In some examples, as shown in fig. 1, the short reinforcing bars 2 and the concrete 5 are both disposed at the same position in the precast pile body 1. That is to say, the embedded anchor of short reinforcing bar 2 is unanimous with the filling height of concrete 5 in the implantation scope of precast tubular pile main part 1, and the position department that short reinforcing bar 2 extends to precast tubular pile main part 1 is filled with concrete 5, and concrete 5 wraps up short reinforcing bar 2. Like this, stub bar 2 can play the anchor effect, can strengthen stub bar 2 and concrete 5's being connected, will realize reliably condensing between cast in situ's C30 concrete 5 and the precast tubular pile main part 1, guarantees the fastness of shaft tower pile foundation.
In some examples, as shown in fig. 1, the length of anchor bolts 4 anchored in the precast pile body 1 is less than the height of the concrete 5 filled into the hollow part of the precast pile body 1. That is, the anchor bolts 4 are anchored by concrete 5 around the portion of the precast tubular pile body 1. Thus, the anchor bolts 4 can be reliably anchored in the precast tubular pile main body 1.
In some examples, as shown in fig. 1, the range in which the short bars 2 are embedded in the precast pile body 1 from the end near the ground D should be greater than the length of the anchor bolts 4 anchored in the precast pile body 1.
In some examples, the ends of the anchor bolts 4 protrude out of the upper surface of the precast pile body 1. Thus, the anchor bolts 4 can be used to connect the transmission line towers on the ground D.
It should be noted that the number of the anchor bolts 4 provided in the present invention is not limited, for example, as shown in fig. 2, the number of the anchor bolts 4 provided in the present invention is four, and the anchor bolts are arranged in a square arrangement.
In some embodiments, as shown in fig. 1 and fig. 2, the short steel bars 2 are distributed in multiple layers in the precast tubular pile body 1, the spacing distance between any two adjacent layers is the same, and each layer is provided with a plurality of short steel bars 2.
In some examples, as shown in fig. 2, several short rebars 2 are arranged at equal distances within the same layer.
Illustratively, for example, the short reinforcing bars 2 are arranged in the precast tubular pile body 1 in multiple layers, and the positions of the short reinforcing bars 2 in each layer are the same, that is, the short reinforcing bars 2 in the same position in the multiple layers are all arranged in a row, and a plurality of short reinforcing bars 2 in the multiple layers are arranged in the precast tubular pile body 1 in a regular array.
Illustratively, for another example, the short reinforcing bars 2 are offset from each other at positions provided between any two adjacent layers. Specifically, the positions of the short steel bars 2 are different between any two adjacent layers, and the short steel bars are arranged in a staggered mode. Like this for multilayer's a plurality of short reinforcement 2 is arranged the position comparatively inseparably in precast tubular pile main part 1, can improve short reinforcement 2's anchoring effect, further strengthens being connected of short reinforcement 2 and concrete 5, strengthens the fastness of shaft tower pile foundation.
The invention also provides a construction method of the tower pile foundation of the power transmission line, which comprises the following steps: s100 to S600.
S100, embedding an anchoring short steel bar 2 at one end, close to the ground D, of the precast tubular pile main body 1.
And S200, sinking the precast tubular pile main body 1.
And S300, filling core filling concrete 3 into the precast tubular pile main body 1 to a certain height. Thus, the core filling concrete 3 is not completely filled in the precast tubular pile body 1, and a space is reserved at the upper end of the precast tubular pile body 1 for placing the foundation bolt 4.
S400, accurately positioning and fixing the foundation bolt 4 at one end, close to the ground D, of the precast tubular pile main body 1.
Illustratively, in step S400, the position of the anchor bolt 4 is accurately positioned according to the iron tower root opening size data, the anchor bolt 4 is placed in the precast tubular pile body 1, and the anchor bolt 4 is temporarily fixed by using an auxiliary device.
S500, pouring concrete 5 in the precast tubular pile main body 1 and tamping to compact. In this way, the anchor bolts 4 can be directly anchored in the precast tubular pile main body 1.
S600, finishing the maintenance of the concrete 5. Specifically, concrete maintenance is carried out according to the requirements of the current national-level industry standard, the foundation bolts 4 are connected with the precast tubular pile main body 1 after the maintenance period is completed, and then the tower can be assembled.
In some embodiments, the bond strength between individual anchor bolts 4 and the concrete 5 may be such that:
KF T1 ≤πdl 0 τ 0
wherein: k represents the bond strength safety coefficient; f T1 -the pull-up force, kN, of a single anchor bolt; d is the diameter of the anchor bolt, m; l 0 -effective anchoring length of the anchor bolt, m; tau. a Bond strength between anchor bolts and concrete, C30 concrete taking 3000kN/m 2 。
In some embodiments, the bonding strength between the anchor body composed of the anchor bolts 4 and the C30 concrete 5 and the precast tubular pile body 1 should meet the following requirement:
K 1 F≤πDh 0 τ b
wherein: k is 1 -bond strength safety factor; f, single pile uplift force kN; h is 0 -effective anchoring depth, m; d, prefabricating the inner diameter of the tubular pile main body, m; tau is b The bonding strength between the C30 concrete and the prefabricated tubular pile main body can be 500kN/m 2 。
In some embodiments, the core concrete is filled into the precast tubular pile body to a height, that is, the height of the unfilled core concrete is greater than the length of the anchor bolt anchored in the precast tubular pile body in step S300. In this way, in step S500, after the concrete 5 is poured into the precast tubular pile body 1, the height of the concrete 5 is greater than the length of the anchor bolt 4 anchored in the precast tubular pile body 1, so that the concrete 5 wraps around the part of the anchor bolt 4 anchored in the precast tubular pile body 1. Thus, the anchor bolts 4 can be reliably anchored in the precast tubular pile main body 1.
According to the construction method of the tower pile foundation of the power transmission line, the anchoring short steel bars are pre-embedded in a certain range at one end, close to the ground, of the precast tubular pile body, after hammering or static pressure pile sinking of the precast tubular pile body is completed, core filling concrete is filled into the precast tubular pile body to a certain distance, foundation bolts are accurately positioned and placed according to the opening size of the iron tower, C30 concrete is poured to fix the foundation bolts, the short steel bars are used for strengthening the bonding force between the foundation bolts and the precast tubular pile body, the method has no field excavation workload and no field steel processing operation, the foundation bolt anchoring construction process is also consistent with the common tower foundation form, the construction is rapid, the cost is low, the process mode is mature, the rapid popularization of the concrete precast pile foundation of the power transmission line is facilitated, the green construction technology of the power transmission line is accelerated, and the level of energy conservation and environmental protection is improved.
The construction method provided by the invention is simple and efficient, avoids field steel processing operation, can ensure the installation precision of the foundation bolt, can accelerate the construction progress and improve the green construction level of the project.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides a transmission line's shaft tower pile foundation which characterized in that: the method comprises the following steps:
prefabricating a tubular pile main body, short reinforcing steel bars, core filling concrete, foundation bolts and concrete;
the precast tubular pile main body is of a hollow structure, and the core filling concrete and the concrete are filled into the hollow part of the precast tubular pile main body;
the short steel bars are pre-buried and anchored at one end, close to the ground, of the precast tubular pile main body, and extend towards the hollow part of the precast tubular pile main body;
the foundation bolt is fixedly arranged at one end, close to the ground, of the precast tubular pile main body.
2. Pole tower pile foundation of an electric transmission line according to claim 1,
the core filling concrete is filled at one end, far away from the ground, of the precast tubular pile main body;
the concrete is filled in one end, close to the ground, of the precast tubular pile main body.
3. Pole tower pile foundation of an electric transmission line according to claim 2,
the short reinforcing steel bars and the concrete are arranged at the same position in the precast tubular pile main body.
4. Pole tower pile foundation of an electric transmission line according to claim 2,
the length of the anchor bolt in the precast tubular pile main body is smaller than the height of the hollow part of the precast tubular pile main body filled with concrete.
5. Pole tower pile foundation of an electric transmission line according to claim 2,
the end part of the foundation bolt extends out of the upper surface of the precast tubular pile main body.
6. A tower pile foundation for an electric transmission line according to claim 1,
the short reinforcing bar is in for the setting of multilayer distribution in the precast tubular pile main part, and arbitrary adjacent two-layer spacing distance is the same, and every layer all is provided with a plurality of the short reinforcing bar.
7. Pole tower pile foundation of an electric transmission line according to claim 6,
the short reinforcing steel bars are arranged between any two adjacent layers in a staggered mode.
8. A construction method of a tower pile foundation of a power transmission line is characterized by comprising the following steps:
embedding an anchoring short steel bar at one end of the precast tubular pile main body close to the ground;
sinking the precast tubular pile main body;
filling core filling concrete into the precast tubular pile main body to a certain height;
accurately positioning and fixing foundation bolts at one end, close to the ground, of the precast tubular pile main body;
pouring concrete in the precast tubular pile main body and tamping, vibrating and compacting;
and finishing the maintenance of the concrete.
9. The construction method of the tower pile foundation of the power transmission line according to claim 8, wherein core filling concrete is filled in the precast tubular pile body to a certain height;
the height of the unfilled core concrete is greater than the length of the anchor bolt anchored in the precast tubular pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261835.3A CN115404900A (en) | 2022-10-14 | 2022-10-14 | Pole tower pile foundation of power transmission line and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261835.3A CN115404900A (en) | 2022-10-14 | 2022-10-14 | Pole tower pile foundation of power transmission line and construction method thereof |
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| CN115404900A true CN115404900A (en) | 2022-11-29 |
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| CN202211261835.3A Pending CN115404900A (en) | 2022-10-14 | 2022-10-14 | Pole tower pile foundation of power transmission line and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004285737A (en) * | 2003-03-24 | 2004-10-14 | Tokyo Electric Power Co Inc:The | Construction method for steel tower foundation using concrete restraining connecting member |
| CN204456162U (en) * | 2015-02-12 | 2015-07-08 | 江苏建院营造有限公司 | A kind of pulling-resistant type prefabricated tubular pile be connected with cushion cap |
| CN207362864U (en) * | 2017-08-22 | 2018-05-15 | 国核电力规划设计研究院有限公司 | A kind of basis for electric power pylon |
| CN109322319A (en) * | 2018-11-08 | 2019-02-12 | 江苏隆兴建设工程有限公司 | The bindiny mechanism of concrete precast pile and pile foundation support table |
| CN212294721U (en) * | 2020-05-08 | 2021-01-05 | 中国能源建设集团辽宁电力勘测设计院有限公司 | Prestressed pipe pile foundation and connection structure of prestressed pipe pile foundation and 35KV power transmission line iron tower |
-
2022
- 2022-10-14 CN CN202211261835.3A patent/CN115404900A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004285737A (en) * | 2003-03-24 | 2004-10-14 | Tokyo Electric Power Co Inc:The | Construction method for steel tower foundation using concrete restraining connecting member |
| CN204456162U (en) * | 2015-02-12 | 2015-07-08 | 江苏建院营造有限公司 | A kind of pulling-resistant type prefabricated tubular pile be connected with cushion cap |
| CN207362864U (en) * | 2017-08-22 | 2018-05-15 | 国核电力规划设计研究院有限公司 | A kind of basis for electric power pylon |
| CN109322319A (en) * | 2018-11-08 | 2019-02-12 | 江苏隆兴建设工程有限公司 | The bindiny mechanism of concrete precast pile and pile foundation support table |
| CN212294721U (en) * | 2020-05-08 | 2021-01-05 | 中国能源建设集团辽宁电力勘测设计院有限公司 | Prestressed pipe pile foundation and connection structure of prestressed pipe pile foundation and 35KV power transmission line iron tower |
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