CN201722969U - Double-arc steel section structure - Google Patents

Double-arc steel section structure Download PDF

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Publication number
CN201722969U
CN201722969U CN2010201902081U CN201020190208U CN201722969U CN 201722969 U CN201722969 U CN 201722969U CN 2010201902081 U CN2010201902081 U CN 2010201902081U CN 201020190208 U CN201020190208 U CN 201020190208U CN 201722969 U CN201722969 U CN 201722969U
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CN
China
Prior art keywords
arc
steel
hot
strength
limb
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Expired - Lifetime
Application number
CN2010201902081U
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Chinese (zh)
Inventor
韩军科
杨靖波
杨风利
张子富
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State Grid Corp of China SGCC
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China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN2010201902081U priority Critical patent/CN201722969U/en
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Publication of CN201722969U publication Critical patent/CN201722969U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model relates to a double-arc steel section structure, in particular to a novel section structure of power transmission tower material in the process of power transmission. The section structure comprises a corner angle and limb plates at both sides, the corner angle is a reinforcing section, and the joints between the limb plates at both sides and the reinforcing section are opposite S-shaped cambered sections. By adopting the cold bending process, the scheme can produce reasonable section shapes with optimal material distribution according to requirements, the section structure of the scheme adopts a double-S radian design in combination with the advantages of the conventional hot-rolled angle iron and the cold bending process, the ratio between the free extension length and the thickness of the limb plate can be optimized according to need, the reduction of stability strength, which is caused by the strength of steel, is decreased, the strength utilization rate of member material is increased, the section structure has better section characteristics than the conventional hot-rolled angle iron due to the arc design of the joints and the angle-reinforcing convex cold bending process, and the section bearing capacity is greatly enhanced.

Description

A kind of dual-arc steel section structure
Technical field
The utility model relates to a kind of power equipment, is specifically related to the new type section structure of electric power pylon tower material in the electric power course of conveying.
Background technology
Hot-rolled angle steel is the preferred material of China's iron tower of power transmission line tower material always, as shown in Figure 1, the cross section of hot-rolled angle steel is generally orthogonal triangle, the intensity of hot-rolled angle steel, calculating stable and three aspects of slenderness ratio have determined the size of its cross section specification, the intensity of hot-rolled angle steel is calculated directly related with the section area of hot-rolled angle steel, the stability calculation of hot-rolled angle steel and the hot-rolled angle steel coefficient of stability, section area and pressure bar stabilization strength reduction factor m NDirectly related, the cross section structure characteristic of the coefficient of stability and hot-rolled angle steel is closely related along with the progressively raising of adopting the hot-rolled angle steel electric power pylon strength of materials, make the reduction of pressure bar stabilization intensity be subjected to the influence of ratio of the free overhanging width of frange plate and its thickness more and more obvious, for the long member of part in the electric power pylon, choosing directly of cross section structure controlled by the slenderness ratio of member, and the calculating of slenderness ratio is closely related with the cross section structure characteristic of hot-rolled angle steel, the cross sectional shape of hot-rolled angle steel is suitable for interconnecting between each member in the electric power pylon, can reduce gusset plate quantity, this also is the one of the main reasons that China's iron tower of power transmission line adopts hot-rolled angle steel for a long time, but the cross section structure shape of hot-rolled angle steel is single, hot-rolled angle steel edge of a wing freedom is overhanging to be reduced along with other raising of steel strength level with ratio limit value its thickness, therefore cause the reduction of hot-rolled angle steel pressure bar stabilization intensity to increase along with other raising of steel strength level, usually cause member that cripling in use takes place, how in the advantage that keeps existing hot-rolled angle steel, the section form of the raising structural strength of redeveloping out is the problem that needs solution at present.
The utility model content
For the reduction of the electric power pylon strength of stability that solves the available technology adopting hot-rolled angle steel raising along with steel strength increases, the problem that causes the component partial flexing, the invention provides a kind of overhanging flakiness ratio of optimizing by cold bending process in the edge of a wing, avoid the reduction of pressure bar stabilization intensity, thereby improve construction material rate of utilization of strength and cross section bearing capacity greatly.The dual-arc steel section structure, concrete scheme is as follows: a kind of dual-arc steel section structure comprises the limb plate on drift angle and both sides it is characterized in that described drift angle is for strengthening section that the limb plate on both sides is relative " S " shape segmental arc with strengthening a section junction.
Another mode of priority of the present utility model: described reinforcement section comprises plane stiffener or arc stiffener,
Another mode of priority of the present utility model: the mutually vertical and two limb plate extended line joinings of described limb plate contact with the inner edge of plane stiffener.
Another mode of priority of the present utility model: the angle of described plane stiffener inner edge and two limb plates is respectively 45 °.
This programme adopts cold bending process can produce the reasonable section shape of distribution of material optimum as required, use for reference the advantage of traditional hot-rolled angle steel and in conjunction with cold bending process, this programme dual-arc steel section structure adopts two serpentine radian designs, can optimize the ratio of free extension of frange plate and thickness as required, reduced the reduction of steel strength because of strength of stability, improved the rate of utilization of strength of construction material, the arc design of tie point and the evagination clod wash that the bight is strengthened are handled more traditional hot-rolled angle steel and are had better cross section property, improve the cross section bearing capacity greatly.Because the size of radius of the radian is relevant with the level of cold bending process, radius of the radian is the smaller the better under the situation of condition permission, generally is not greater than the thickness of steel itself.Cold-rolled forming section is to improve the light section steel structure that mechanical property is representative by changing its cross sectional shape, the main stressed member of the electric power pylon overwhelming majority of the present invention is by the stable control of pressurized, the dual-arc steel section structure can be adjusted the ratio of overhanging width in the edge of a wing and thickness by the clod wash processing technology, avoided the member generation of cripling in use, overhanging width according to steel design strength and thickness optimization, the i.e. overhanging flakiness ratio of optimizing by cold bending process in the edge of a wing, can avoid the reduction of pressure bar stabilization intensity, thereby improved the rate of utilization of strength of construction material greatly, had better mechanical characteristic.It is stressed well-balanced that stiffener and two limb plates adopt 45 ° of angles to make, two limb plates adopt the right angle to continue the beneficial effect of hot-rolled angle steel, and " s " shape arc has reduced edge of a wing extension elongation, has increased intensity.
Description of drawings
Steel product cross-sectional shape schematic diagram in Fig. 1 prior art
Fig. 2 the utility model dual-arc steel section structural representation
Fig. 3 the utility model dual-arc steel section structure arc drift angle schematic diagram
The specific embodiment
As shown in Figure 2, the dual-arc steel section structure of this programme comprises limb plate 1, drift angle 2, wherein drift angle is the plane stiffener, positive and negative two segmental arcs that the limb plate on both sides and stiffener junction, plane are connected for " S " shape, near the arc center of circle at plane stiffener place towards inside, second arc center of circle be portion outward, arc on the limb plate of both sides is relative, two arc sizes that connect are identical, because steel have certain thickness, therefore form inside and outside two arcs, be inner arc 3 and outer arc 4, two limb plates are through vertical each other after the turnover of segmental arc, and the plane stiffener is respectively 45 ° with angle between two limb plates, and the extending line intersection point of two limb plate vertical edges and the inner edge of plane stiffener are crossing.
The size of segmental arc arc is relevant with the clod wash manufacturing process in this programme, generally be subjected to the limitation of technology, can not arbitrarily control size, but experiment through the applicant, the more little effect of radian herein is good more, therefore the radian of this programme can contact for both sides in theory, but radian value is not to be the bigger the better, with present experimental data, the size of radian value gets final product with the thickness of the steel 1~2mm that fluctuates, this programme utilizes two segmental arcs to reduce the size of the overhanging width in the edge of a wing, thereby strengthens the strength of stability of depression bar.
As shown in Figure 3, the drift angle of this programme can also be set arc for and strengthen section, and this moment, radian needed corresponding the variation.

Claims (4)

1. dual-arc steel section structure comprises the limb plate (1) on drift angle (2) and both sides it is characterized in that described drift angle is for strengthening section that the limb plate on both sides is relative " S " shape segmental arc with strengthening a section junction.
2. a kind of dual-arc steel section structure as claimed in claim 1 is characterized in that, described reinforcement section (2) comprises plane stiffener or arc stiffener,
3. a kind of dual-arc steel section structure as claimed in claim 2 is characterized in that, described limb plate
(1) vertical mutually and two limb plate extended line joinings contact with the inner edge of plane stiffener.
4. a kind of dual-arc steel section structure as claimed in claim 2 is characterized in that, the angle of described plane stiffener inner edge and two limb plates (1) is respectively 45 °.
CN2010201902081U 2010-05-10 2010-05-10 Double-arc steel section structure Expired - Lifetime CN201722969U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201902081U CN201722969U (en) 2010-05-10 2010-05-10 Double-arc steel section structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201902081U CN201722969U (en) 2010-05-10 2010-05-10 Double-arc steel section structure

Publications (1)

Publication Number Publication Date
CN201722969U true CN201722969U (en) 2011-01-26

Family

ID=43491288

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201902081U Expired - Lifetime CN201722969U (en) 2010-05-10 2010-05-10 Double-arc steel section structure

Country Status (1)

Country Link
CN (1) CN201722969U (en)

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GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20140328

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: China Electric Power Research Institute

Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15

Patentee before: China Electric Power Research Institute

Effective date of registration: 20140328

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: China Electric Power Research Institute

Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15

Patentee before: China Electric Power Research Institute

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING

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Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE

Effective date: 20140328

Owner name: STATE GRID CORPORATION OF CHINA

Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE

Effective date: 20140328

CX01 Expiry of patent term

Granted publication date: 20110126

CX01 Expiry of patent term