CN212001238U - Transmission line iron tower foundation - Google Patents
Transmission line iron tower foundation Download PDFInfo
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- CN212001238U CN212001238U CN202020346813.7U CN202020346813U CN212001238U CN 212001238 U CN212001238 U CN 212001238U CN 202020346813 U CN202020346813 U CN 202020346813U CN 212001238 U CN212001238 U CN 212001238U
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Abstract
The utility model relates to the technical field of power transmission line iron towers, and provides a power transmission line iron tower foundation which comprises a mounting seat formed by pouring reinforced concrete, wherein foundation bolts are fixed in the mounting seat, and the top ends of the foundation bolts extend upwards to the outside of the mounting seat; the pile body is arranged below the mounting seat, and the upper end of the pile body is fixedly connected with the mounting seat; the pile body comprises a steel pipe and a grouting body filled in the steel pipe; the wall of the steel pipe is provided with a plurality of overflow holes. The pile body consisting of the steel pipe and the grouting body is arranged, so that the pile body can bear larger horizontal force; through set up the overflow hole on the steel pipe wall, when site operation, the slip casting body flows to the steel pipe outside from the overflow hole again after pouring into the steel pipe, and then firmly bonds steel pipe and ground together through the slip casting body, has improved the fastness of being connected between this iron tower basis and the ground, makes the utility model discloses a transmission line iron tower basis both can be applicable to the weak soil ground, can be applicable to the rock foundation again.
Description
Technical Field
The utility model belongs to the technical field of transmission line iron tower technique and specifically relates to a transmission line iron tower basis.
Background
With the rapid development of economy and science and technology in China, the demand of the society on electric power is rapidly increased, the construction scale of a power transmission line and a power grid is larger and larger, and the geological and topographic conditions along the line are more complex. The iron tower foundation is used as an important component of a power transmission line structure system, and the construction cost, the construction period and the labor consumption of the iron tower foundation account for a large proportion in the whole line engineering.
The traditional iron tower micro pile foundation comprises a foundation bearing platform, a foundation upright post and a micro concrete pile which are formed by pouring reinforced concrete; the foundation upright post is fixed on the top surface of the foundation bearing platform, and foundation bolts used for being connected with the iron tower are embedded in the foundation upright post; the miniature concrete pile is connected with the bottom surface of the foundation bearing platform.
The iron tower foundation with the structure has the following problems: 1. due to the limitation of concrete strength, the iron tower foundation with the structure is only suitable for a soft soil foundation, and the condition of insufficient connection strength can exist in a rock foundation, so that the iron tower foundation is not suitable for the rock soil foundation, and the application range of the iron tower foundation is limited. 2. The iron tower is connected with the foundation column through the foundation bolt, so that the load of the iron tower is transferred to the foundation bearing platform through the foundation column, a larger bending moment effect is caused on the foundation bearing platform, and the stability and the economy of the foundation are not good. 3. Because the iron tower is connected with the foundation column through the foundation bolt, and the foundation bolt is pre-embedded in the foundation column, when the foundation bolt is longer, the thickness of the foundation bearing platform or the height of the foundation column is usually increased so as to ensure that the embedding depth of the foundation bolt meets the requirement of anchoring length; the increase of the thickness of the foundation bearing platform can cause the great increase of the consumption of the concrete; the height of the foundation upright column is increased, so that the bending moment effect on the foundation bearing platform is intensified, and the stability and the economical efficiency of the foundation are further reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a transmission line iron tower basis that is applicable to weak soil foundation and rock foundation simultaneously is provided.
The utility model provides a technical scheme that its technical problem adopted is: the power transmission line iron tower foundation comprises a mounting base formed by pouring reinforced concrete, wherein a foundation bolt is fixed in the mounting base, and the top end of the foundation bolt extends upwards to the outside of the mounting base; the pile body is arranged below the mounting seat, and the upper end of the pile body is fixedly connected with the mounting seat; the pile body comprises a steel pipe and a grouting body filled in the steel pipe; and the wall of the steel pipe is provided with a plurality of overflow holes.
Further, the upper end of the pile body is anchored in the mounting seat.
Furthermore, the steel pipe is fixedly connected with a steel bar in the mounting seat.
Further, the grouting body is fine aggregate concrete or cement mortar.
Further, the mount pad includes the basic cushion cap of level setting.
Furthermore, the mounting seat also comprises a foundation upright post fixed at the bottom of the foundation bearing platform; the lower end of the foundation bolt penetrates through the foundation bearing platform and then enters the inner part of the upright post.
Further, the cross section of the basic bearing platform is circular, square or rectangular.
Further, the cross section of the base upright post is circular, square or rectangular.
The utility model has the advantages that: the utility model discloses a transmission line iron tower foundation, through setting up the pile body that comprises steel pipe and slip casting body, make this pile body can bear bigger horizontal force; through set up the overflow hole on the wall at the steel pipe, when site operation, the slip casting body flows to the steel pipe outside from the overflow hole again after pouring into the steel pipe into, and then firmly bonds steel pipe and ground together through the slip casting body, has improved the fastness of being connected between this iron tower basis and the ground greatly, makes the utility model discloses a transmission line iron tower basis both can be applicable to the weak soil ground, can be applicable to the rock foundation again.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below; it is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a power transmission line iron tower foundation according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure after excavation on the ground;
fig. 3 is the structure schematic diagram after constructing on the ground the utility model discloses transmission line iron tower basis of embodiment.
The reference numbers in the figures are: 1-mounting seat, 2-foundation bolt, 3-pile body, 4-steel pipe, 5-grouting body, 6-overflow hole, 7-foundation bearing platform, 8-foundation upright post, 9-mounting seat hole and 10-pile body hole.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The dimensions in the drawings are exaggerated for clarity.
Hereinafter, an embodiment of the present invention will be described with reference to fig. 1 to 3. The power transmission line iron tower foundation comprises a mounting base 1 formed by pouring reinforced concrete, wherein an anchor bolt 2 is fixed in the mounting base 1, and the top end of the anchor bolt 2 extends upwards to the outside of the mounting base 1; the pile body is characterized by also comprising a plurality of pile bodies 3 which are arranged below the mounting seat 1 and the upper ends of which are fixedly connected with the mounting seat 1; the pile body 3 comprises a steel pipe 4 and a grouting body 5 filled in the steel pipe 4; the wall of the steel pipe 4 is provided with a plurality of overflow holes 6.
The mounting base 1 is formed by integrally pouring reinforced concrete, foundation bolts 2 are embedded in the mounting base 1, and the tops of the foundation bolts 2 extend upwards to the upper side of the mounting base 1, so that the iron tower is connected with the mounting base 1 through the foundation bolts 2. The number, length and specification of the anchor bolts 2 are determined by load calculation, and are not particularly limited herein. The lower part of the mounting seat 1 is provided with a plurality of pile bodies 3 which are inserted into a foundation, the pile bodies 3 are vertically arranged, and the upper ends of the pile bodies 3 are fixedly connected with the bottom of the mounting seat 1. The number, length and specification of the pile bodies 3 should be determined according to the load calculation, and are not specifically limited herein.
In order to improve the firmness of the connection between pile 3 and mounting base 1, the upper end of pile 3 is preferably anchored in mounting base 1. The length of the pile body 3 anchored in the installation seat 1 should be determined according to the load calculation, and is not specifically limited herein. In order to further improve the firmness of the connection between pile body 3 and mounting seat 1, it is preferable that steel pipe 4 is fixedly connected to the steel bar in mounting seat 1. The steel pipe 4 can be directly welded with the steel bars in the mounting seat 1, and can also be connected with the steel bars in the mounting seat 1 through connecting pieces. And the steel pipe 4 is filled with grouting bodies 5 so as to increase the strength and rigidity of the pile body 3. The wall of the steel pipe 4 is provided with a plurality of overflow holes 6, and the size and the number of the overflow holes 6 are determined according to load calculation. Preferably, a plurality of overflow holes 6 are uniformly distributed on the wall of the steel pipe 4 along the axial direction and the circumferential direction. During site operation, the grouting body 5 is injected into the steel pipe 4 and then flows to the outside of the steel pipe 4 from the overflow hole 6, and then the steel pipe 4 and the foundation are firmly bonded together through the grouting body 5, so that the firmness of connection between the iron tower foundation and the foundation is greatly improved. Preferably, the grouting body 5 is a grouting material such as fine aggregate concrete or cement mortar.
The mounting base 1 may be of an existing construction, for example comprising a horizontally arranged foundation bearing platform and a foundation column arranged on top of the foundation bearing platform, in which foundation bolts are arranged. However, this structure causes a large bending moment on the foundation bearing platform, which is detrimental to the stability and safety of the foundation.
In order to improve the stability and safety of the iron tower foundation, the mounting seat 1 comprises a foundation bearing platform 7 which is horizontally arranged as a preferred embodiment. The foundation bolt 2 is embedded in the foundation bearing platform 7, and the top end of the foundation bolt 2 extends upwards to the upper side of the foundation bearing platform 7. After the iron tower is connected with the foundation bearing platform 7 through the foundation bolts 2, the load of the iron tower is directly transmitted to the foundation bearing platform 7 and then transmitted to the foundation through the pile body 3, so that the effect of large bending moment caused on the foundation bearing platform 7 is avoided, and the stability and the economical efficiency of the foundation of the iron tower are further improved.
With respect to the structure of the mount 1 in the above embodiment, when the length of the anchor bolt 2 is long, the thickness of the foundation cap 7 needs to be increased to ensure that the embedded depth of the anchor bolt 2 meets the requirement of the anchoring length. Since the cross-sectional size of the foundation cap 7 is large, increasing the thickness of the foundation cap 7 greatly increases the amount of concrete used.
In order to ensure that the embedding depth of the foot bolt 2 meets the requirement of anchoring length and simultaneously reduce the consumption of concrete, as a preferred embodiment, the mounting seat 1 further comprises a foundation upright post 8 fixed at the bottom of the foundation bearing platform 7; the lower end of the foundation bolt 2 penetrates through the foundation bearing platform 7 and then enters the foundation upright post 8. Preferably, the foundation upright post 8 and the foundation bearing platform 7 are integrally cast and formed by reinforced concrete.
The effect of foundation pillar 8 is used for guaranteeing that the embedded depth of rag bolt 2 satisfies the requirement of anchor length, consequently, foundation pillar 8's height and cross section size should be confirmed according to rag bolt 2's mounting dimension, as long as can satisfy rag bolt 2's installation can, just so can the quantity of the concrete that significantly reduces. As shown in fig. 1, the base pillar 8 is fixed to the center of the bottom of the base platform 7 so that the mount 1 is a stepped shape having a large top and a small bottom. Like this, through set up the basic stand 8 that the cross section size is less than basic cushion cap 7 in the bottom of basic cushion cap 7, make rag bolt 2's lower extreme stretch into the inside of basic stand 8, not only guaranteed that the embedding degree of depth of rag bolt 2 satisfies the requirement of anchor length, reduced the quantity of concrete moreover.
The shape of the cross section of the foundation platform 7 and the foundation columns 8 is not strictly limited, for example, the shape of the cross section of the foundation platform 7 is circular, square or rectangular, etc., and the shape of the cross section of the foundation columns 8 is circular, square or rectangular, etc. Of course, the foundation bearing platform 7 and the foundation upright post 8 with different shapes can be combined randomly. The base upright post 8 may be vertically arranged or obliquely arranged, and is not limited specifically herein.
Following the utility model discloses transmission line iron tower basis's work progress explains in detail: as shown in fig. 2, a mounting seat hole 9 is excavated in the ground, and a pile body hole 10 is drilled in the bottom of the mounting seat hole 9. As shown in fig. 3, the steel pipe 4 is inserted downwards into the pile body hole 10, and the upper end of the steel pipe 4 is positioned in the mounting seat hole 9; and then cement mortar is injected into the steel pipe 4, the cement mortar flows to the outside of the steel pipe 4 from the overflow hole 6, so that a gap between the outer wall of the steel pipe 4 and the pile body hole 10 is filled, the steel pipe 4 and the foundation are firmly bonded together, and when the steel pipe 4 is filled with the cement mortar, grouting is stopped. Then arranging a reinforcement cage and foundation bolts 2 in the mounting seat holes 9, and fixedly connecting the reinforcement cage with the steel pipe 4; and then pouring concrete for integral forming to form a mounting seat 1 with foundation bolts 2 embedded inside, and simultaneously realizing the connection of the mounting seat 1 and a pile body 3, thereby finishing the construction of the power transmission line iron tower foundation.
The utility model discloses a transmission line iron tower foundation, through setting up the pile body 3 that comprises steel pipe 4 and slip casting 5, make this pile body 3 can bear bigger horizontal force; through set up overflow hole 6 on the wall at steel pipe 4, when site operation, slip casting 5 pours into and flows to the steel pipe 4 outside from overflow hole 6 again in the steel pipe 4 back, and then firmly bonds steel pipe 4 and ground together through slip casting 5, has improved the fastness of being connected between this iron tower basis and the ground greatly, makes the utility model discloses a transmission line iron tower basis both can be applicable to the weak soil ground, can be applicable to the rock ground again. By arranging the foundation bolts 2 on the foundation bearing platform 7, the iron tower is directly arranged at the top of the foundation bearing platform 7, the load of the iron tower is directly transmitted to the foundation bearing platform 7 and then transmitted to the foundation through the pile body 3, the bending moment effect on the foundation bearing platform 7 is reduced, and the safety of the iron tower foundation is improved. Through the installation basic stand 8 in the bottom of basic cushion cap 7, not only guaranteed that rag bolt 2's the degree of depth of burying satisfies the requirement of anchor length, reduced the quantity of concrete moreover.
Claims (8)
1. The power transmission line iron tower foundation comprises a mounting base (1) formed by pouring reinforced concrete, wherein foundation bolts (2) are fixed in the mounting base (1), and the top ends of the foundation bolts (2) extend upwards to the outside of the mounting base (1);
the device is characterized by also comprising a plurality of pile bodies (3) which are arranged below the mounting seat (1) and the upper ends of which are fixedly connected with the mounting seat (1); the pile body (3) comprises a steel pipe (4) and a grouting body (5) filled in the steel pipe (4); the wall of the steel pipe (4) is provided with a plurality of overflow holes (6).
2. The transmission line iron tower foundation of claim 1, characterized in that the upper end of the pile body (3) is anchored inside the mounting seat (1).
3. The power transmission line iron tower foundation of claim 2, wherein the steel pipe (4) is fixedly connected with a steel bar in the mounting seat (1).
4. The transmission line iron tower foundation of claim 1, 2 or 3, wherein the grouting body (5) is fine aggregate concrete or cement mortar.
5. The transmission line iron tower foundation of claim 1, 2 or 3, characterized in that the mounting seat (1) comprises a horizontally arranged foundation cap (7).
6. The transmission line iron tower foundation of claim 5, wherein the mounting base (1) further comprises a foundation upright (8) fixed at the bottom of the foundation bearing platform (7); the lower end of the foundation bolt (2) penetrates through the foundation bearing platform (7) and then enters the foundation upright post (8).
7. The transmission line iron tower foundation of claim 5, characterized in that the cross-sectional shape of the foundation cap (7) is circular, square or rectangular.
8. The transmission line iron tower foundation of claim 6, characterized in that the cross-sectional shape of the foundation column (8) is circular, square or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020346813.7U CN212001238U (en) | 2020-03-18 | 2020-03-18 | Transmission line iron tower foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020346813.7U CN212001238U (en) | 2020-03-18 | 2020-03-18 | Transmission line iron tower foundation |
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| Publication Number | Publication Date |
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| CN212001238U true CN212001238U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020346813.7U Active CN212001238U (en) | 2020-03-18 | 2020-03-18 | Transmission line iron tower foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108722A (en) * | 2021-11-02 | 2022-03-01 | 国网山东省电力公司烟台供电公司 | Power transmission iron tower foundation reinforcing structure with anchor rod and manufacturing method |
-
2020
- 2020-03-18 CN CN202020346813.7U patent/CN212001238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108722A (en) * | 2021-11-02 | 2022-03-01 | 国网山东省电力公司烟台供电公司 | Power transmission iron tower foundation reinforcing structure with anchor rod and manufacturing method |
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