CN113236009A

CN113236009A - Transmission tower reinforcing apparatus of concrete is filled in double angle steel box combination cross-section

Info

Publication number: CN113236009A
Application number: CN202110716232.7A
Authority: CN
Inventors: 刘佳浩; 辛振科; 田玄玄
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-08-10

Abstract

The invention provides a power transmission tower reinforcing device with a double-angle steel box type combined section filled with concrete. Grooves and bolt holes are processed on the reinforcing angle steel; the inner partition plate is welded with the reinforcing angle steel; the clamping piece comprises clamping piece A and clamping piece B, and the clamping piece passes through bolted connection on the angle steel of reinforcement, and the concrete is poured in the box cavity that former angle steel and reinforcement angle steel formed. The invention applies the concrete-filled steel tube technology to the iron tower reinforcement, and has the advantages that: the reinforcing effect is obvious; the welding procedure is not needed; the original angle steel does not need to be punched; the clamp is simple and light in design; the whole reinforcing device is convenient to transport and carry; the baffle plate can cross the barriers of the gusset plate, the bolt, the angle steel and the like, and the communication connectivity of the reinforced angle steel is ensured.

Description

Transmission tower reinforcing apparatus of concrete is filled in double angle steel box combination cross-section

Technical Field

The invention relates to the technical field of steel structure iron tower reinforcement, in particular to a power transmission tower reinforcing device with a double-angle steel box type combined section filled with concrete.

Background

The power transmission line built and put into operation before 1984 has poor strong wind resistance due to low design standard at that time, especially wind load, and tower collapse accidents within a certain range are mostly generated after the tower is put into operation. The accident is caused by that the maximum design wind speed is lower and the wind pressure height variation coefficient is not considered. According to DL/T5154-2012 'design technical regulation of overhead power transmission line tower structure' and DL/T741-2010 'operation regulation of overhead power transmission line', the wind pressure height change coefficient and the maximum wind speed are considered again, and the tower types are calculated, checked and found: the original tower cannot meet the actual operation requirement, and if the operated iron towers are replaced again, the difficulty is high, the cost is high, and the power failure time is long, so that the bearing capacity of the iron towers is improved by adopting reinforcement measures to main materials of the iron towers under the electrified condition.

The method for increasing the section is one of the methods for reinforcing the upper structure of the iron tower. However, the existing method for reinforcing the enlarged section has more defects and shortcomings. Some reinforcing schemes need to punch holes in main materials, so that the main materials which are originally insufficient in bearing capacity are damaged manually, certain dangers exist, and meanwhile, the iron tower is as high as dozens of meters and hundreds of meters, and the punching operation of steel materials at the high altitude of hundreds of meters is difficult and dangerous; some reinforcing methods need welding operation, and field welding operation at the high altitude of hundreds of meters is difficult and dangerous; the existing reinforcing method utilizes the original bolt hole for reinforcement, which needs to dismount the original bolt, so that the process is complicated and dangerous; some reinforcing devices of the existing reinforcing method have too many parts and are difficult to construct, for example, the cross reinforcing device (CN 108798057 a) of the power transmission tower disclosed by livingsand the invention is composed of a reinforcing material, three clamping pieces and four bolts, and it is very difficult to assemble a device at high altitude because a worker only has two hands and does not necessarily have to vacate two hands during high altitude operation, so that ground workers are dangerous in case that a certain clamping piece or bolt falls from high altitude carelessly; some reinforcing methods weld the clamping pieces, the rib plates and the like on the reinforcing materials in advance, for example, the reinforcing method proposed by Liuxiang of southern China university in the Master's Bingquan, which causes certain difficulty to the transportation of the reinforcing materials, even the welded clamping pieces, the rib plates and the like are possibly damaged in the transportation process, and meanwhile, the welded clamping pieces and the rib plates collide with the original inclined materials and auxiliary materials of the iron tower, so that the reinforcing members have certain difficulty to be transported to the reinforcing part of the iron tower; some reinforcing methods are influenced by iron tower node plates or oblique materials and the like, and the connectivity of the reinforcing materials cannot be ensured.

The steel tube concrete technology is widely applied to frame structures due to good stress performance such as high bearing capacity, good ductility, excellent earthquake resistance, favorable fire prevention and fire resistance of steel tubes, good corrosion resistance and the like, but the research and application of the steel tube concrete technology in the fields of design, construction, reinforcement and the like of the upper structure of a power transmission iron tower are rarely reported.

Disclosure of Invention

The invention provides a power transmission tower reinforcing device with a double-angle steel box-type combined cross section filled with concrete, which applies a steel tube concrete technology to reinforcing an iron tower and aims to solve the problems that the bearing capacity improvement rate of the reinforced iron tower is low, the cooperative working performance of a reinforcing material is poor, the reinforcing material cannot penetrate through a gusset plate, an oblique material, an auxiliary material and the like in the conventional iron tower reinforcing technology, and meanwhile, the device does not need complex and dangerous procedures such as punching, welding and the like on the original angle steel.

The invention provides a power transmission tower reinforcing device with a double-angle steel box type combined section internally filled with concrete, which comprises: the steel reinforcement structure comprises reinforcement angle steel, an inner partition plate, concrete, a clamping piece and a bolt.

The clamping piece comprises a clamping piece A and a clamping piece B, and bolt holes B are formed in two ends of the clamping piece A and the clamping piece B.

And bolt holes and grooves are processed on the reinforcing angle steel.

The middle part of the clamping piece A is provided with a bolt hole A.

The inner partition plate is welded with the reinforcing angle steel;

preferably, the reinforced angle steel is made of materials with the same or similar specifications as the original angle steel, and a bolt hole C and a groove are machined in the reinforced angle steel; the bolt holes a and C are aligned.

Preferably, the device is mainly designed for reinforcing the main material of the power transmission tower.

The clamping piece A is connected with the clamping piece B through a bolt, the clamping piece is arranged on the outer side of the original angle steel and the reinforced angle steel, and the opening directions of the original angle steel and the reinforced angle steel are opposite to each other to form a box-shaped section.

The bolts on the clamping piece can be arranged in one row or two rows along the longitudinal direction of the reinforcing angle steel. The clamp may be provided with stiffening ribs.

The concrete is poured into a box-shaped cavity formed by the original angle steel and the reinforcing angle steel.

The invention has the beneficial effects that: 1) the reinforcing process does not need a welding procedure; 2) the original angle steel does not need to be punched; 3) the clamp is simple and light in design; 4) the whole reinforcing device is convenient to transport and carry; 5) the obstacles such as node plates, bolts, angle steel and the like can be spanned, and the connectivity of the reinforced angle steel are ensured; 6) because the built-in concrete can absorb a large amount of heat, the reinforcing device can improve the fire resistance and the fire resistance of the power transmission iron tower; 7) the corrosion resistance of the power transmission iron tower can be improved; 8) the concrete can improve the bearing capacity and stability of the reinforcing member; 9) the concrete can play a role in cementation, so that the original angle steel and the reinforced angle steel are not easy to separate. The invention improves the ultimate bearing capacity of the iron tower, improves the reinforcement construction efficiency and saves the engineering cost.

Drawings

FIG. 1: a three-dimensional view of a reinforcement member.

FIG. 2: and (5) three-dimensional drawing of the processed reinforced angle steel.

FIG. 3: the holder is three-dimensionally exploded.

FIG. 4: A-A cross section of the inner baffle of the reinforcing member is shown in cross section.

In the figure: 1. reinforcing angle steel; 2. original angle steel; 3. a clamping member; 4. a bolt; 5. a groove; 6. an inner partition plate; 7. the oblique material or the auxiliary material of the iron tower is connected to the original angle steel; 8. concrete; 9. an inner bulkhead aperture; 10. a bolt hole A in the middle of the clamping piece A; 11: bolt holes B at two ends of the clamping piece; 12. a bolt hole C for reinforcing the angle steel; 301. a clamping member A; 302. and a clamping piece B.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The invention belongs to a power transmission tower reinforcing device with a double-angle steel box type combined section filled with concrete, which comprises a reinforcing angle steel (1), wherein a groove (5), a bolt hole C (12) and an inner partition plate (6) are processed in advance on the reinforcing angle steel (1). The shape, size and position of the groove (5) are matched with the shape, size and position of the original angle steel (2); the bolt hole C (12) is arranged for fixing the clamping piece (3) so as not to slide; the inner partition plate (6) is welded with the reinforcing angle steel (1), the effect of the inner partition plate is similar to that of a bamboo joint, and the shape of a combined section can be well kept; an inner partition plate hole (9) is formed in the middle of the inner partition plate (6) so that concrete (8) can smoothly pass through the inner partition plate (6) when the concrete (8) is poured.

Preferably, the reinforcing angle steel (1) is made of a material with the same or similar specification as that of the original angle steel (2), and the bolt hole C (12) is aligned with the bolt hole A (10).

The clamping piece A (301) is connected with the clamping piece B (302) through a bolt hole B (11), the clamping piece (3) is arranged on the outer sides of the original angle steel (2) and the reinforcing angle steel (1), and the openings of the original angle steel (2) and the reinforcing angle steel (1) face to each other to form a box-shaped section.

Preferably, the bolts (4) can be arranged in one or two rows longitudinally along the reinforcement angle (1).

Preferably, the clamping member (3) may be provided with stiffening ribs.

The concrete reinforcing construction operation steps are as follows:

the first step is as follows: according to the specific size of the iron tower to be reinforced, the reinforcing angle steel (1) is processed in advance, and a groove (5), a bolt hole (12) and a welding inner partition plate (6) are mainly processed on the reinforcing angle steel (1).

The second step is that: fixing a clamping piece A (301) on a reinforcing angle steel (1) by using a bolt (4), placing the reinforcing angle steel (1) at a position to be reinforced, clamping an original angle steel (2) in a groove (5), and connecting the clamping piece A (301) and a clamping piece B (302) together through a bolt hole B (11);

and thirdly, pouring concrete (8) in a box-shaped cavity formed by the original angle steel (2) and the reinforced angle steel (1), and vibrating and compacting.

And fourthly, installing the next reinforcing angle steel (1), and circulating the steps until the reinforcing of the whole power transmission iron tower is completed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a transmission tower reinforcing apparatus of concrete is irritated in double angle steel box type combined cross-section which characterized in that includes: the reinforced angle steel comprises a reinforced angle steel, an inner partition plate, concrete, a clamping piece and a bolt, bolt holes and grooves are machined in the reinforced angle steel, the inner partition plate is welded with the reinforced angle steel, the clamping piece is composed of a clamping piece A and a clamping piece B, the clamping piece is arranged on the outer side of the reinforced angle steel and the original angle steel, the clamping piece A is connected to the reinforced angle steel through the bolt, the reinforced angle steel is connected with the original angle steel through the bolt to form a box-shaped cross section, and the concrete is poured into a box-shaped cavity formed by the original angle steel and the reinforced angle steel.

2. The reinforcing device for the power transmission tower with the double angle steel box type combined cross section filled with concrete as claimed in claim 1, wherein bolt holes B are formed in two ends of the clamping piece A and two ends of the clamping piece B, and a bolt hole A is formed in the middle of the clamping piece A.

3. The reinforcement device for the transmission tower with concrete poured into the double-angle steel box type combined section as claimed in claim 1, wherein the bolts on the clamping members are arranged in one row or two rows along the longitudinal direction of the reinforcement angle steel.

4. The reinforcing device for the power transmission tower with the built-up section filled with concrete of the double angle steel box type as claimed in claim 1, wherein the clamping member is provided with a stiffening rib.