阅读说明：本技术 一种改扩塔脚板式输电铁塔基础加固结构及加固方法 (Reinforcement structure and reinforcement method for foundation of expanded tower foot plate type power transmission iron tower ) 是由 邓凤淋 张军 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种改扩塔脚板式输电铁塔基础加固结构及加固方法,包括原塔基础、原塔脚板、原靴板和塔脚,所述原靴板固定连接在所述原塔脚板上,所述塔脚固定连接在所述原靴板上,所述原塔脚板的尺寸小于所述原塔基础的表面尺寸,其特征在于：在所述原塔脚板外围焊接有新塔脚板,所述新塔脚板向外延伸出所述原塔基础的表面边缘；在所述原塔基础外围浇筑有新塔基础,所述新塔脚板通过新地脚螺栓连接在所述新塔基础的表面；在所述原塔脚板和所述新塔脚板上浇筑有新锚墩。本发明通过改扩塔脚板及增设地脚螺栓的方法来加固铁塔基础,可在不影响线路安全稳定运行,保证铁塔不倒、不拆除的情况下进行原位置加固补强,使之满足铁塔受力。(The invention discloses a strengthening structure and a strengthening method for a modified and expanded tower foot plate type power transmission iron tower foundation, which comprises an original tower foundation, an original tower foot plate, an original shoe plate and a tower foot, wherein the original shoe plate is fixedly connected to the original tower foot plate, the tower foot is fixedly connected to the original shoe plate, the size of the original tower foot plate is smaller than the surface size of the original tower foundation, and the strengthening structure is characterized in that: a new tower foot plate is welded on the periphery of the original tower foot plate, and the new tower foot plate extends outwards to the surface edge of the original tower foundation; a new tower foundation is poured on the periphery of the original tower foundation, and the new tower foot plate is connected to the surface of the new tower foundation through a new foundation bolt; and new anchor piers are poured on the original tower foot plate and the new tower foot plate. The method for reinforcing the foundation of the iron tower by changing the tower foot expanding plate and adding the foundation bolt can carry out in-situ reinforcement and reinforcement under the condition of not influencing the safe and stable operation of a line and ensuring that the iron tower is not overturned or dismantled, so that the stress of the iron tower is met.)

1. A modified and expanded tower foot plate type power transmission iron tower foundation reinforcing structure comprises an original tower foundation (1), original tower plates (3), original shoe plates (5) and tower feet (2), wherein the original tower plates (3) are connected to the surface of the original tower foundation (1) through original foot bolts (10), the original shoe plates (5) are fixedly connected to the original tower plates (3), the tower feet (2) are fixedly connected to the original shoe plates (5), and the size of the original tower plates (3) is smaller than that of the surface of the original tower foundation (1), and the modified and expanded tower foot plate type power transmission iron tower foundation reinforcing structure is characterized in that: a new tower foot tower (9) is welded on the periphery of the original tower plate (3), and the new tower foot tower (9) extends outwards to the surface edge of the original tower foundation (1); a new tower foundation is poured on the periphery of the original tower foundation (1), and the new tower foot tower (9) is connected to the surface of the new tower foundation through a new foundation bolt (4); and new anchor piers are poured on the original tower plate (3) and the new tower foot tower (9).

2. The reformed tower foot plate type power transmission tower foundation reinforcing structure according to claim 1, wherein a new shoe plate (7) is welded outside the original shoe plate (5), and a part of the bottom of the new shoe plate (7) positioned on the new tower foot tower (9) is welded on the new tower foot tower (9).

3. The reformed and expanded tower foot plate type power transmission iron tower foundation reinforcing structure according to claim 1, wherein a new rib plate (8) is welded on the new tower foot tower (9).

4. The reformed tower foot plate type power transmission iron tower foundation reinforcing structure according to claim 1, wherein the new rib plates (8) are formed in a plurality of blocks, and the plurality of new rib plates (8) are formed on the new tower foot tower (9) in a forward crossing manner.

5. The reformed tower foot plate type power transmission iron tower foundation reinforcing structure according to claim 1, wherein an original rib plate (6) is welded on the original tower plate (3).

6. The reformed and expanded tower foot plate type power transmission tower foundation reinforcing structure according to claim 1, wherein a steel plate (11) is wrapped on the tower foot (2) and the contact part of the new anchor pier.

7. A strengthening method for a strengthening structure of a modified and expanded tower foot plate type power transmission iron tower foundation is characterized by comprising the following steps:

(1) firstly knocking off an original anchor pier on an original tower foundation (1) of a power transmission iron tower to expose an original tower plate (3), an original shoe plate (5) and tower legs (2);

(2) pouring the periphery of the original tower foundation (1) to form a new tower foundation, and embedding new foundation bolts (4) in the new tower foundation during pouring;

(3) a new tower foot tower (9) is welded on the periphery of the original tower plate (3), the new tower foot tower (9) extends outwards to the surface edge of the original tower foundation (1), and the new tower foot tower (9) is connected to the new tower foundation through a new foundation bolt (4);

(4) welding a new shoe plate (7) outside the original shoe plate (5), and welding the part of the bottom of the new shoe plate (7) positioned on the new tower foot tower (9);

(5) welding a new rib plate (8) on the new tower foot tower (9);

(6) and pouring on the original tower foundation (1) and the new tower foundation to form a new anchor pier.

8. The method for reinforcing the foundation reinforcing structure of the reformed tower foot plate type power transmission tower according to claim 1, wherein when the anchor pier is poured, a steel plate (11) is wrapped on the tower foot (2) at the part contacting with the new anchor pier.

Technical Field

The invention relates to a strengthening structure and a strengthening method for a modified expanded tower foot plate type power transmission iron tower foundation, and belongs to the technical field of iron tower foundation strengthening.

Background

The transmission tower is an important device in the power transmission engineering. In order to ensure the normal operation of power transmission, the transmission tower should be stably fixed on the ground and have certain requirements of wind resistance, ice coating resistance and the like. However, many power transmission towers used at present are manufactured and installed according to old edition specifications, and performance indexes of the power transmission towers cannot meet the requirements of increasingly severe environments.

In order to improve the stability of the power transmission tower, two methods can be generally adopted to realize: one method is to use a more stable transmission iron tower to replace the existing transmission iron tower, and the method has the problems of high cost, complex construction, long replacement period and the like; the other method is to reinforce the existing transmission tower, and usually a mounting hole is made on a main material of the transmission tower, and a reinforcing plate is installed on the main material by using a bolt.

In order to solve the problem that the reinforcing performance cannot be guaranteed due to the fact that a main material is damaged, a document with the application number of 2009100677124 discloses a reinforcing method of a power transmission iron tower, a pair of connecting angle steels are arranged on the back to back of the outer side of each node board by fully utilizing mounting holes in the existing main material, a transverse plate is arranged at the intersection point of a transverse material or an oblique steel between every two adjacent node boards and the main material, and a fastening bolt is used for enabling the reinforcing angle steels to be arranged on the connecting angle steels in parallel to the main material, so that the reinforcing function of the power transmission iron tower is achieved.

However, the existing reinforcing method mainly aims at the iron tower itself, and does not reinforce the foundation of the iron tower, and particularly after long-term use, the problem that the stress of the connection structure of the iron tower and the tower foundation may shake and fail is solved, so how to reinforce the connection structure without affecting the safe and stable operation of the line and ensuring that the iron tower is not fallen down and dismantled is not seen, and related reports are not seen yet.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the reinforcing structure and the reinforcing method for the foundation of the expanded tower foot plate type power transmission iron tower are provided, the in-situ reinforcing and reinforcing are carried out under the conditions that the safe and stable operation of a line is not influenced, and the iron tower is guaranteed not to fall down or be dismantled, so that the problem that the stress of a connecting structure of the iron tower and the tower foundation possibly shakes and fails after long-term use is solved.

The technical scheme of the invention is as follows: the utility model provides a change and expand column foot board formula steel pylons basis reinforced structure, includes former tower foundation, former tower foot board, former boot plate and column foot, former tower foot board is in through former foot bolted connection the surface on former tower foundation, former boot plate fixed connection be in on the former tower foot board, column foot fixed connection be in on the former boot plate, former tower foot board size is less than former tower foundation's surface dimension, its characterized in that: a new tower foot plate is welded on the periphery of the original tower foot plate, and the new tower foot plate extends outwards to the surface edge of the original tower foundation; a new tower foundation is poured on the periphery of the original tower foundation, and the new tower foot plate is connected to the surface of the new tower foundation through a new foundation bolt; and new anchor piers are poured on the original tower foot plate and the new tower foot plate.

Preferably, a new shoe plate is welded outside the original shoe plate, and the part of the bottom of the new shoe plate, which is positioned on the new step plate, is welded on the new step plate.

Preferably, a new rib plate is welded on the new tower foot plate.

Preferably, the new rib plates are formed in a plurality of blocks, and the plurality of blocks are formed on the new tower foot plate in a forward crossing manner.

Preferably, an original rib plate is welded on the original tower foot plate.

Preferably, the tower foot and the new anchor pier contact part are wrapped by steel plates.

The invention also provides a reinforcing method of the reinforced structure of the modified and expanded tower foot plate type power transmission iron tower foundation, which comprises the following steps:

(1) firstly, knocking off an original anchor pier on an original tower foundation of a power transmission iron tower to expose an original tower foot plate, an original shoe plate and tower feet;

(2) pouring the periphery of the original tower foundation to form a new tower foundation, and embedding new foundation bolts in the new tower foundation during pouring;

(3) a new tower foot plate is welded on the periphery of the original tower foot plate, the new tower foot plate extends outwards to the surface edge of the original tower foundation, and the new tower foot plate is connected to the new tower foundation through a new foundation bolt;

(4) welding a new shoe plate outside the original shoe plate, and welding the part of the bottom of the new shoe plate, which is positioned on the new step plate, on the new step plate;

(5) welding a new rib plate on the new tower foot plate;

(6) and pouring on the original tower foundation and the new tower foundation to form a new anchor pier.

Preferably, when the anchor pier is poured, a steel plate is wrapped on the tower foot and the contact part of the new anchor pier.

The invention has the beneficial effects that: the method for reinforcing the foundation of the iron tower by changing the tower foot expanding plate and adding the foundation bolt can effectively solve the problem that the stress of the connecting structure of the iron tower and the tower foundation can shake and lose efficacy. The invention can greatly improve the construction efficiency and effectively reduce the possibility of safety accidents.

Drawings

Fig. 1 is an elevation view of a modified expanded tower foot plate type power transmission iron tower foundation reinforcing structure in one embodiment;

FIG. 2 is an enlarged schematic view of a connection between the iron tower and the original tower foundation in FIG. 1;

FIG. 3 is a plan view of a new tower footing plate and an original tower footing plate;

description of reference numerals:

1 original tower foundation, 2 tower legs, 3 original tower leg plates, 4 new foundation bolt, 5 original shoe plates, 6 original rib plates, 7 new shoe plates, 8 new rib plates, 9 new tower leg plates, 10 original foundation leg bolts and 11 steel plates.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 is a schematic view of a modified expanded tower foot plate type power transmission tower foundation reinforcing structure according to an embodiment. The modified tower foot plate type power transmission iron tower foundation reinforcing structure in the embodiment comprises an original tower foundation 1, an original tower plate 3, an original shoe plate 5 and a tower foot 2, wherein the original tower plate 3 is connected to the surface of the original tower foundation 1 through an original foot bolt 10, the original shoe plate 5 is fixedly connected (welded) to the original tower plate 3, the tower foot 2 is fixedly connected (bolted) to the original shoe plate 5, an original rib plate 6 is welded to the original tower plate 3, the original rib plate 6 is connected between the original shoe plates 5, and the size of the original tower plate 3 is smaller than the surface size of the original tower foundation 1.

Referring to fig. 2 and 3, in order to enhance the reliability of the foundation of the power transmission tower, a new tower foot tower 9 is welded on the periphery of the original tower plate 3, and the new tower foot tower 9 extends outwards to the surface edge of the original tower foundation 1; a new tower foundation is poured on the periphery of the original tower foundation 1, and a new tower foot tower 9 is connected to the surface of the new tower foundation through a new foundation bolt 4. Specifically, a new square tower leg tower 9 is welded outside the original tower plate 3, the new square tower leg tower 9 is provided with a frame opening matched with the periphery of the original tower plate 3, and the frame opening is connected with the original tower plate 3 by welding.

In order to improve the connection strength of the original shoe plate 5, a new shoe plate 7 is welded to the outside of the original shoe plate 5, and the part of the bottom of the new shoe plate 7 located on the new pylon 9 is welded to the new pylon 9, and the inside thereof is welded to the outer end face of the original shoe plate 5.

A new rib plate 8 is welded on the new tower foot tower 9 to improve the connection reliability of the new tower foundation and the original tower foundation 1. Specifically, the new rib plates 8 are formed in several pieces, and the several pieces of new rib plates 8 are formed on the new tower foot tower 9 in a forward crossing manner.

And new anchor piers are poured on the original tower plate 3 and the new tower foot tower 9, and the new anchor piers cover and protect the tower foot 2 plate, the shoe plate and the rib plate, so that the service life of the new anchor piers can be effectively prolonged. Preferably, the steel plate 11 is wrapped on the contact part of the tower foot 2 and the new anchor pier, and through the test of the applicant, the structure can effectively prevent the corrosion of the contact part of the tower foot 2 and the new anchor pier and prolong the service life of the tower foot 2 as much as possible.

The embodiment of the invention also provides a reinforcing method for the reinforced structure of the foundation of the modified and expanded tower foot plate type power transmission iron tower, which comprises the following steps:

(1) the original anchor pier on the original tower foundation 1 of the power transmission iron tower is knocked off, so that the original tower plate 3, the original shoe plate 5 and the tower legs 2 are exposed.

(2) And pouring the periphery of the original tower foundation 1 to form a new tower foundation, and embedding a plurality of new foundation bolts 4 in the new tower foundation during pouring.

(3) The periphery of the original tower plate 3 is welded with a new tower foot tower 9, the new tower foot tower 9 extends outwards to the surface edge of the original tower foundation 1, and the new tower foot tower 9 is connected to the new tower foundation through a new foundation bolt 4.

(4) A new shoe 7 is welded to the outside of the original shoe 5, and the part of the bottom of the new shoe 7 on the new pylon 9 is welded to the new pylon 9.

(5) And a new rib plate 8 is welded on the new tower foot tower 9.

(6) And a new anchor pier is formed by pouring on the original tower foundation 1 and the new tower foundation, and a steel plate 11 is wrapped on the contact part of the tower foot 2 and the new anchor pier when the anchor pier is poured.

In the embodiment, the tower foot 2 mainly comprises a main material of the tower foot 2 and an inclined material of the tower foot 2.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.