CN114457835A - Metal Profile Cap Anchor Foundation for Transmission Line Trusses - Google Patents

Abstract

The invention discloses a metal section bearing platform anchoring foundation for a power transmission line truss, which comprises a foundation, an assembled metal section bearing platform, an anchor rod and metal supports, wherein the assembled metal section bearing platform comprises a plurality of metal sections which are mutually connected to form a closed structure, and the number of the metal sections is at least three; the foundation is excavated with an original groove for installing the assembled metal section, the assembled metal section is fixed in the original groove through an anchor rod, the metal support is fixed on an assembled metal section bearing platform, the original groove is backfilled and covered by concreting, so that the problems that the prefabricated reinforced concrete bearing platform of the assembled anchor rod foundation in an area with a thin covering soil layer or high exposed rock strength of rocks is overlarge in size, too heavy in weight and inconvenient to transport and install can be solved, the foundation component is further lightened, and the requirements of the assembled and mechanized construction level of the anchor rod are further improved.

Description

Metal Profile Cap Anchor Foundation for Transmission Line Trusses

technical field

The invention relates to the field of electric power facilities, in particular to a metal profile bearing platform anchoring foundation for a transmission line truss.

Background technique

Under the background of industrialization and rapid economic and social development, with the continuous improvement of people's living standards, problems such as shortage of manpower and rising labor costs in engineering construction have become more and more prominent. At the same time, the implementation of the "people-centered" concept has objectively It also requires the construction of power transmission and transformation projects to continuously reduce manpower input and on-site labor intensity, and improve the level of safety quality and occupational health protection; therefore, the whole process of mechanized construction has become an inevitable trend in the development of engineering construction models in power grids, transportation, construction and other industries. , On-site operations will be transformed from traditional "labor-intensive" to "equipment-intensive", accelerating the realization of mechanical replacement of labor.

With the rapid development of my country's electric power construction, more and more line corridors need to pass through high mountains or hilly areas, and the distinctive feature of these areas is that the foundation is widely distributed in rocks. How to choose a suitable foundation type is to build an environment-friendly transmission line. As an important part of the transmission line engineering system, the tower foundation, its cost, construction period and labor consumption account for a large proportion of the entire line project. Therefore, it is of great significance to optimize and innovate the basic design of transmission lines in mountainous areas.

The original invention [CN207714358U] prefabricated cap anchor foundation for power transmission, which combines the prefabricated foundation with the bolt foundation in an original way to form a prefabricated cap bolt foundation for power transmission, solves the requirements of mechanized construction and prefabricated construction, and promotes transmission lines. The tower foundation is standardized, modularized, and mass-produced; but the original invention uses prefabricated reinforced concrete components at the border between the bottom and the rock, which can better solve the problems of anti-corrosion and rust. The increase of the prefabricated reinforced concrete component cap section increases the weight, which is inconvenient for transportation and installation; it limits the use of the [CN207714358U] transmission prefabricated cap anchor foundation.

Therefore, in order to solve the above problems, there is a need for a metal profile cap anchoring foundation for transmission line trusses, which can solve the prefabricated reinforced concrete bearing of prefabricated bolt foundations in areas with thin covering soil layer or high strength of exposed rock. The volume of the platform is too large, the weight is too heavy, and it is inconvenient for transportation and installation. It is necessary to further lighten the basic components and further improve the requirements of the bolt assembly and mechanized construction level.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to overcome the defects in the prior art, and to provide a metal profile cap anchoring foundation for a transmission line truss, which can solve the problem of assembling in areas where the covering soil layer is thin or the rock exposed rock has high strength The prefabricated reinforced concrete bearing platform of the anchor bolt foundation is too large in volume, heavy in weight, and inconvenient for transportation and installation. It is necessary to further lighten the basic components and further improve the requirements of the bolt assembly and mechanized construction level.

The metal profile cap anchoring foundation for the transmission line truss of the present invention includes a foundation, an assembled metal profile cap, an anchor rod and a metal bracket, and the assembled metal profile cap comprises a plurality of metal profiles connected to each other to form a closed structure. Profiles, there are at least two metal profiles; the foundation is dug with an original groove for installing the assembled metal profile, the assembled metal profile bearing platform is fixed to the original groove by an anchor rod, and the metal bracket is fixed to the assembled metal profile Metal profile cap, the original groove is covered by pouring concrete backfill.

Further, the metal bracket includes a plurality of support rods, the bottom ends of the support rods are fixed on the assembled metal profile bearing platform, and the top ends of the support rods converge to a point, so that the metal bracket forms a pyramid-shaped structure.

Further, the concrete backfilled and covered in the original groove has a horizontal plane that is on the same plane as the foundation, the concrete protrudes upward along the horizontal plane to form a stable platform, and the stable platform is located between the top and bottom ends of the support rods and covers the support rods. so that after the original groove is covered by pouring concrete backfill, the support rod and the concrete form a support structure.

Further, a cushion layer is arranged between the original groove and the assembled metal profile support platform, and the cushion layer is arranged in the original groove and has a reference surface for laying the assembled metal profile support platform.

Further, the cushion layer is arranged at the bottom of the original groove, the top surface of the cushion layer is the datum surface, and the assembled metal profile support platform includes four interconnected to form a "well" shape projected along the vertical direction. Metal profiles.

Further, there are several anchor rods, each of the metal profiles corresponds to at least one anchor rod, each of the metal profiles includes two strip-shaped parallel fixed channel steels, and the anchor rods corresponding to each metal profile are arranged on between the two channels.

Further, the number of the support rods is four, and the four support rods are respectively installed on the four intersection points of the "well" shape, and at least distributed around each support rod on the vertical direction projection. Three anchors.

Further, a reinforcement rod is arranged between the adjacent support rods, the first end of the reinforcement rod is connected to the bottom end of the support rod, and the second end of the reinforcement rod is connected to the support rod adjacent to the support rod. The middle part of the other support rod, so that the reinforcement rod divides the area between two adjacent support rods into an upper triangle area at the top and a lower triangle area at the bottom in the vertical direction.

Further, a stabilizing rod is also connected to the supporting rod, and the stabilizing rod is connected between the adjacent supporting rods parallel to the horizontal plane.

Further, the reinforcing rod is passed through the stabilization platform and connected to the bottom end of the supporting rod, and the first end of the stabilization rod is connected to the second end of the reinforcing rod.

The beneficial effects of the present invention are as follows: the metal profile cap anchoring foundation for the transmission line truss disclosed by the present invention adopts the assembled metal profile cap as the foundation, the metal components are small in size and light in weight, and the anchor rod is improved. The application rate of foundation assembly has the advantages of easy transportation and simple on-site assembly and construction. At the same time, the amount of excavation for the foundation trench can be controlled in a small range, which reduces the damage to the surrounding original rocks, greatly reduces the construction period, and It can improve the supporting effect and stabilization effect. The steel material structure described in this scheme is made of weathering steel, which has better bending resistance. The steel structure is partially covered with a concrete layer, thereby further improving the anti-rust ability. The assembled metal profile bearing platform includes several metal profiles that are connected to each other to form a closed structure, which makes the supporting structure more compact and has strong bending resistance and anchoring ability. To improve the anchoring effect, the closed structure is composed of at least two metal profiles that are bent and connected relative to each other. The number of metal profiles used is selected according to the actual situation. The assembled metal profile cap is installed from top to bottom to the design of the maximum effective area of the original slot, which minimizes the construction period. After the assembled metal profile cap is installed, the original slot is covered by pouring concrete backfill, which can make the support The structure and the surrounding rock mass form a stable overall structure, which improves the stability and support strength.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural schematic diagram of the fitting relationship between the assembled metal profile cap and the anchor rod according to the present invention;

FIG. 3 is a schematic structural diagram of the assembled metal profile bearing platform of the present invention being fixed to the original groove through an anchor rod.

Detailed ways

FIG. 1 is a schematic structural diagram of the present invention. As shown in the figure, the upper and lower directions and relative positions refer to the upper and lower directions and relative positions in FIG. 1 , and the vertical direction is the same as that shown in FIG. 1 . The vertical direction arranged in the middle, the horizontal direction is perpendicular to the vertical direction, the metal profile cap anchoring foundation for the transmission line truss in this embodiment includes the foundation 01, the assembled metal profile cap, the anchor rod 02 and the Metal bracket, the assembled metal profile bearing platform includes a plurality of metal profiles 04 connected to each other to form a closed structure, and the metal profiles 04 are at least two; the foundation 01 is dug with an original slot for installing the assembled metal profile 04 , the assembled metal profile support platform is fixed to the original groove through the anchor rod 02, the metal bracket is fixed to the assembled metal profile support platform, and the original groove is backfilled and covered by pouring concrete A51. As shown in the figure, in this scheme, the assembled metal profile bearing platform is used as the foundation. Each metal component is small in size and light in weight, which improves the application rate of bolt foundation assembly, and has the advantages of easy transportation and simple on-site assembly and construction. The excavation amount of the foundation trench can be controlled in a small range, which reduces the damage to the surrounding original rock, greatly reduces the construction period, and can improve the supporting effect and stabilization effect. The steel material structure described in this scheme is preferred. It is made of weathering steel, which can also be made of its steel grade. The use of weathering steel makes it have better bending resistance. At the same time, the outer surface of the steel skeleton is wrapped with anti-corrosion and anti-rust materials, and buried in the steel structure below the horizontal plane 06 Part of it is covered by the concrete layer to further improve the anti-rust ability. The assembled metal profile bearing platform includes several metal profiles 04 connected with each other to form a closed structure, which makes the supporting structure more compact and has strong bending resistance and anchoring ability. To improve the anchoring effect, the closed structure is composed of at least two metal profiles 04 that are bent and connected relative to each other. The number of metal profiles 04 used is selected according to the actual situation. According to the design of the maximum effective area of the assembled metal profile cap installed from top to bottom to the original groove, the construction period can be shortened to the maximum extent. After the assembled metal profile cap is installed, the original groove is covered by pouring concrete A51 backfill. Make the supporting structure and the surrounding rock mass form a stable overall structure, and improve the stability and support strength. More specifically, the technical problem that this scheme is mainly used to solve is when the covering soil layer is thin, or the rock exposed rock has high strength. The prefabricated reinforced concrete cap of the regionally assembled bolt foundation is too large, heavy, and inconvenient for transportation and installation. To further reduce the weight of the basic components, further improve the requirements of bolt assembly and mechanized construction level, and concrete A51 backfill The form of covering can greatly protect the section steel from environmental corrosion, and at the same time, it also has excellent bearing capacity and improves the anchoring effect of the overall structure.

In this embodiment, the metal bracket includes a plurality of support rods 03, the bottom ends of the support rods 03 are fixed on the assembled metal profile bearing platform, and the top ends of the support rods 03 converge to a point, so that the metal bracket forms a pyramid shape structure. Each support rod 03 is equivalent to an edge of the pyramid-shaped structure, and the support rod 03 bears the vertical pressure. The bottom section is large and the stability is stronger. Further, the bottom end of the support rod 03 has a tower foot plate connected with the assembled metal profile bearing platform to form a stable support structure.

In this embodiment, the concrete A51 backfilling and covering the original groove has a horizontal plane 06 that is on the same plane as the foundation 01 . The concrete A51 protrudes upward along the horizontal plane 06 to form a stable platform 07 , and the stable platform 07 is located at the top of the support rod 03 Between the bottom end and the radial direction of the support rod 03, the radial direction of the support rod is the circumferential direction of the length direction of the support rod, so that after the original groove is backfilled and covered by pouring concrete A51, the support rod 03 and the concrete A51 forms a support structure. As shown in the figure, the bottom end of the support rod 03 is fixed on the assembled metal profile cap and covered by the backfilled concrete A51; Coating, so that the stable platform 07 forms a radial wrapping of the support rod 03, strengthens the stability between the support rod 03 and the foundation 01, and improves the structural strength of the support foundation.

In this embodiment, a cushion layer is provided between the original groove and the assembled metal profile support platform, and the cushion layer is arranged in the original groove and has a reference surface 08 on which the assembled metal profile support platform is laid. The cushion layer in this scheme is formed by pouring concrete B52. Due to its fluidity, it is convenient to form the reference plane 08 for installing the assembled metal profile bearing platform, and the material is the same as the backfilled concrete A51, which is conducive to improving the convenience of construction. , and provide anti-corrosion environment for metal components, improve the service life of anchor foundation.

In this embodiment, the cushion layer is arranged at the bottom of the original groove, the top surface of the cushion layer is the datum plane 08, and the assembled metal profile support platform includes interconnected components to form a “well” projected along the vertical direction. Four metal profiles 04 in the shape of a glyph. The cushion layer of this scheme is concrete B52 layer and covers the bottom of the original tank to form a relatively flat datum plane 08. During actual construction, it can be arranged on the tank wall of the original tank or distributed in blocks in the original tank according to the site environment and construction needs. The groove bottom of the groove will not be repeated here, and the assembled metal profile cap is arranged on the top of the cushion during installation. The assembled metal profile cap in this solution includes four metal profiles connected to each other to form a "well" shape. 04. As shown in the figure, the projection of the assembled metal profile bearing platform along the vertical direction is approximately a "well"-shaped structure, and the approximate meaning is that the assembly formed by the interconnection of strip-shaped steel is used in this scheme. The structure formed is not a "well" shape in the strict sense, but changes on the basis of the "well" shape. The "well" shape described in this scheme is only for the convenience of expressing the assembly in this scheme. The structure of the type metal profile bearing platform has a slight deviation in the actual construction, and will not be repeated here; the "well"-shaped structure is more stable, and can provide a large area of support foundation, which is convenient for the installation of the bolt 02; further The assembled metal profile bearing platform may also be a trapezoidal support structure or an arched support structure in space, which can improve the anchoring effect and facilitate assembly and molding, which will not be repeated here.

In this embodiment, there are several anchor rods 02 , each of the metal profiles 04 corresponds to at least one anchor rod 02 , and each of the metal profiles 04 is made of two strip-shaped parallel fixed channel steels (channel steel A41 and channel steel B42), the anchor rod 02 corresponding to each metal profile 04 is set between the two channel steels (channel steel A41 and channel steel B42). The metal profile 04 in this scheme is formed by two parallel fixed channel steels (channel steel A41 and channel steel B42), and the anchor rod 02 is passed through the two channel steels (channel steel A41 and channel steel B42) and each metal profile 04 is provided with at least one anchor rod 02 to improve the anchoring effect. As shown in the figure, the respective webs of the two channel steels are arranged relative to each other, so that the anchor rod 02 is clamped between the two channels. Between them, the flanges of the two channel steels form an installation bearing surface for installing the tower foot plate, which further improves the stabilization effect.

In this embodiment, the number of the support rods 03 is four (only two are shown in the figure), and the four support rods 03 are respectively installed on the four intersecting points of the "well" shape, and the four support rods 03 are installed along the vertical At least three anchor rods 02 are distributed around each support rod 03 on the vertical projection. The four support rods 03 are respectively connected to the "well"-shaped connection nodes, so that the overall support structure is more stable. As shown in the figure, three anchor rods 02 are distributed around each "well"-shaped node to improve the The anchoring effect, at the same time, the three anchor rods 02 distributed around the "well"-shaped node form a triangle, and the three anchor rods 02 are simultaneously supported on a "well"-shaped node, forming the surrounding structure of this node, and further improving the structural strength of the anchoring foundation , the number of the anchor rods 02 is increased according to actual needs, and will not be repeated here. The center of gravity of the pyramid-shaped structure formed by the more specific metal support is roughly located in the middle of the metal support, and its tower feet are subjected to outward tension, that is, The size of the conical bottom shows a trend of outward expansion and increase. At the position where the support rod 03 tower foot plate is connected to the "well" shaped node, the anchor rod 02 has an expansion gap along its expansion trend, so that the stress area is concentrated in this direction. The bolts 02 and the assembled metal profile caps that are joined and distributed around this stress area can disperse the force evenly to the bottom foundation 01 to the greatest extent, and have strong anti-pull characteristics, which can improve the anchoring effect and help improve the use of life.

In this embodiment, reinforcing rods 09 are arranged between the adjacent supporting rods 03 , the first end of the reinforcing rod 09 is connected to the bottom end of the supporting rod 03 , and the second end of the reinforcing rod 09 Connected to the middle of the other support rod 03 adjacent to the support rod 03, so that the reinforcement rod 09 vertically divides the area between the two adjacent support rods 03 into an upper triangular area at the top and a bottom at the bottom. lower triangle. As shown in the figure, the support rod A31 and the support rod B32 are arranged adjacently, and the first end of the reinforcement rod 09 is connected to the bottom end of the support rod A31, and the second end of the reinforcement rod 09 is connected to the middle of the support rod B32, In order to make the reinforcement rod 09 vertically divide the area between the two adjacent support rods 03 into an upper triangle area at the top and a lower triangle area at the bottom, more specifically, the reinforcement rod 09 passes through the stable platform 07 is connected to the bottom end of the support rod A31, which improves the structural strength and stability of the overall structure, especially the support strength, and improves the anchoring effect and support effect.

In this embodiment, the support rod 03 is also connected with a stabilizing rod 10, and the stabilizing rod 10 is connected between the adjacent supporting rods 03 parallel to the horizontal plane 06. The first end of the stabilizing rod 10 The second end portion of the reinforcing rod 09 is connected. As shown in the figure, the stabilizing rod 10 is connected to the supporting rod A31 and the supporting rod B32 parallel to the horizontal plane 06, so that the stabilizing rod 10 separates the upper triangular area again, and separates two triangle-shaped upper and lower stable areas. , Improve the structural strength and stability of the overall structure, especially the support strength, improve the anchoring effect and support effect.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A metal profile cap anchorage foundation for transmission line truss, comprising foundation, assembled metal profile cap, anchor rod and metal support, it is characterized in that: described assembled metal profile cap comprises several interconnected There are at least two metal profiles forming a closed structure; an original groove for installing the assembled metal profile is dug in the foundation, and the assembled metal profile bearing platform is fixed to the original groove through an anchor rod, and the metal profile is The bracket is fixed on the assembled metal profile bearing platform, and the original groove is covered by pouring concrete backfill. 2 . The metal profile bearing platform anchoring foundation for a transmission line truss according to claim 1 , wherein the metal bracket comprises a plurality of support rods, and the bottom ends of the support rods are fixed on the assembled metal profile bearing platform. 3 . The top ends of the support rods converge to a point, so that the metal support forms a pyramid-shaped configuration. 3 . The metal profile cap anchoring foundation for transmission line trusses according to claim 2 , wherein the concrete backfilled and covering the original groove has a horizontal plane that is on the same plane as the foundation, and the concrete protrudes upward along the horizontal plane. 4 . A stable platform is formed, the stable platform is located between the top end and the bottom end of the support rod and covers the radial direction of the support rod. 4 . The metal profile cap anchoring foundation for a transmission line truss according to claim 1 , wherein a cushion is arranged between the original groove and the assembled metal profile cap, and the cushion is arranged in the original groove. 5 . The groove also has a reference surface for laying the assembled metal profile bearing platform. 5 . The metal profile cap anchoring foundation for transmission line trusses according to claim 4 , wherein the cushion layer is arranged at the bottom of the original groove, and the top surface of the cushion layer is a reference plane, so the The assembled metal profile bearing platform comprises four metal profiles which are mutually connected to form a "well" shape projected along the vertical direction. 6 . The metal profile cap anchoring foundation for a transmission line truss according to claim 5 , wherein the anchor rods are several, and each of the metal profiles corresponds to at least one anchor rod. The metal profile includes two strip-shaped parallel fixed channel steels, and the anchor rod corresponding to each metal profile is arranged between the two channel steels. 7 . The metal profile cap anchoring foundation for a transmission line truss according to claim 6 , wherein the number of the support rods is four, and the four support rods are respectively installed in the shape of a “well”. 8 . At the four intersection points of , there are at least three anchor rods distributed around each support rod on the vertical projection. 8 . The metal profile cap anchoring foundation for a transmission line truss according to claim 3 , wherein a reinforcing rod is arranged between the adjacent support rods, and the first ends of the reinforcing rods are connected to each other. 9 . At the bottom end of the support rod, the second end of the reinforcement rod is connected to the middle part of another support rod adjacent to the support rod, so that the reinforcement rod vertically extends the area between the two adjacent support rods Divided into an upper triangle at the top and a lower triangle at the bottom. 9 . The metal profile cap anchoring foundation for a transmission line truss according to claim 8 , wherein a stabilizing rod is also connected to the support rod, and the stabilizing rod is connected parallel to the horizontal plane in the adjacent between the support rods. 10 . The metal profile cap anchoring foundation for a transmission line truss according to claim 9 , wherein the reinforcing rod is passed through the stable platform and connected to the bottom end of the support rod, and the first part of the stable rod is 10 . The end is connected to the second end of the reinforcing rod.

Images