CN103669924A - Novel node structure for power transformation frame rectangular section angle iron frame girder wire hanging board - Google Patents

Abstract

The invention discloses a novel node structure of a rectangular cross-section angle steel frame beam hanging wire plate of a substation frame. It includes: frame beam chord angle steel (1), frame beam vertical bar angle steel (2), first support angle steel (3), second support angle steel (4), third support angle steel (5), cross-type hanging plate (6), vertical bar connecting plate (7), first chord connecting plate (8), second chord connecting plate (9), bolts (10) (10), hanging wire hole (12), frame beam oblique Web bar angle steel (13). The structure of the present invention is simple and practical, and the stress is reasonable. The cross-type hanging plate has good integrity, high strength, reliable connection with the rectangular frame beam, clear force transmission, and high shear bearing capacity at the hanging hole.

Description

A new type of node structure for substation frame with rectangular cross-section angle steel frame beam hanging plate

technical field

The invention relates to a power transformation device, in particular to a novel node structure of a rectangular cross-section angle steel frame beam hanger plate.

Background technique

Due to the vast territory of our country, there are great differences in the natural conditions and economic development levels of various places, which also brings diversity to the form of the substation structure. With the rapid development of my country's economy, my country's steel production has also increased significantly, and the quality of steel has also improved steadily. At the same time, its market price has also tended to be reasonable. Among them, more and more steel structures are used. Rectangular cross-section angle steel frame beams are widely used in engineering. The hanging plate of the frame beam is the most important force transmission component. The mechanical performance of the hanging plate itself and the connection structure with the frame beam are related to the safety of the entire substation line. In order to ensure the safety of the substation structure and its lines, the most reliable connection node structure of the hanging board should be adopted. Therefore, how to design a simple, practical, safe and reliable catenary joint that is suitable for rectangular cross-section angle steel frame beams has become a problem that designers need to solve.

Contents of the invention

In order to solve the above-mentioned problems, the present invention provides a new type of node structure of a rectangular cross-section angle steel frame beam hanging plate of a substation frame. The purpose is to provide a new type of connection node with clear and reliable force transmission on the basis of ensuring simple and practical processing and installation, taking into account the stability of the hanging line of the frame beam and the strength of the hanging plate.

This is how it is implemented:

A new type of node structure for substation frame with rectangular cross-section angle steel frame beam hanging plate, comprising frame beam chord angle steel 1, frame beam vertical rod angle steel 2, first support angle steel 3, second support angle steel 4, third support angle steel 5, Cross-shaped hanging plate 6, vertical bar connecting plate 7, first chord connecting plate 8, second chord connecting plate 9, bolt 10, hanging thread hole 12, frame beam oblique web bar angle steel 13;

The cross-shaped thread-hanging plate 6 is a complete continuous steel plate, and the cross-shaped thread-hanging plate 6 is provided with a thread-hanging hole 12;

The cross-type hanging plate 6 is connected with the angle steel 2 of the vertical bar of the frame beam by the fillet weld, and is fully welded;

The first supporting angle steel 3, the second supporting angle steel 4, the third supporting angle steel 5 are connected with the cross-type hanging plate 6 through bolts 10;

The vertical bar connecting plate 7 is connected with the vertical bar angle steel 2 of the frame beam by fillet welding, and is fully welded;

The first chord connecting plate 8, the second chord connecting plate 9 and the frame beam chord angle steel 1 are connected by fillet welds, fully welded;

The first support angle steel 3, the second support angle steel 4, the third support angle steel 5 and the vertical bar connecting plate 7 are connected by bolts 10;

The frame beam vertical bar angle steel 2 is connected with the first chord connecting plate 8 and the second chord connecting plate 9 through bolts 10;

The angle steel 13 of the oblique web bar of the frame beam is fixed on the first chord connecting plate 8 by bolts 10 .

All steel components, bolts and nuts, and backing plates are hot-dip galvanized.

Bolt 10 grade is 8.8 grade, grade A.

Welds must be completed before hot-dip galvanizing, and welding with paint on site is not allowed.

The thickness of the cross-shaped wire hanging plate 6 needs to be determined according to the shear strength of the guy wire load check. The calculation method can adopt the known method of material mechanics and metal material science.

The advantages and effects of this book are as follows:

The structure is simple and practical. The cross-shaped hanging plate is clip-welded with the double-angle steel vertical bars of the truss on the four sides of the frame beam, which ensures the reliable connection between the hanging plate and the stressed members on each side of the frame beam. At the same time, the cross-shaped hanging plate It itself enhances the overall stability of the frame beam at the hanging line. The wire hanging hole is drilled on the steel plate, and its shear bearing capacity is much higher than the connection structure of the U-bolt wire hanging ring. The method of this node is simple, the power transmission is clear, safe and practical.

Description of drawings

Fig. 1 is this structure schematic diagram;

Fig. 2 is a schematic diagram of the position of A-A in Fig. 1;

In the figure, 1, frame beam chord angle steel; 2, frame beam vertical bar angle steel; 3, 4, 5, support angle steel; plate; 10, 11, bolt; 12, hanging wire hole; 13, frame beam web angle steel.

Detailed ways

Below in conjunction with the accompanying drawings, this will be described in detail. As shown in Figure 1 and Figure 2, at first the frame beam vertical bar angle steel 2, the cross-shaped hanging plate 6, and the vertical bar connecting plate 7 are welded with fillet welds, and then the frame beam chords are welded together. The angle steel 1 is welded with the first chord connecting plate 8 and the second chord connecting plate 9 with fillet welds, and then all steel components, bolts including their nuts and backing plates are subjected to hot-dip galvanized anti-corrosion treatment, and then the welded connection The frame beam vertical bar angle steel 2, the cross-shaped hanging plate 6, the vertical bar connecting plate 7 are connected with the first chord connecting plate 8 and the second chord connecting plate 9 with bolts 10, and finally the first supporting angle steel 3 , The second support angle steel 4, the third support angle steel 5 are connected with the vertical bar connecting plate 7 and the cross-type hanging plate 6 with bolts 10.

Claims (5)

1. A new type of node structure of rectangular cross-section angle steel frame beam hanging plate of substation frame, characterized in that it includes frame beam chord angle steel (1), frame beam vertical bar angle steel (2), first support angle steel (3), The second support angle steel (4), the third support angle steel (5), the cross type hanging plate (6), the vertical bar connecting plate (7), the first chord connecting plate (8), the second chord connecting plate ( 9), bolts (10), hanging wire holes (12), frame beam diagonal rod angle steel (13); The cross-shaped hanging plate (6) is a complete continuous steel plate, and the cross-shaped hanging plate (6) is provided with hanging holes (12); The cross-type hanging plate (6) is connected to the angle steel (2) of the vertical bar of the frame beam by the fillet weld, and the welding is full; The first support angle steel (3), the second support angle steel (4), the third support angle steel (5) are connected with the cross-type hanging plate (6) by bolts (10); The vertical bar connecting plate (7) and the frame beam vertical bar angle steel (2) are connected by fillet welds, fully welded; The first chord connecting plate (8), the second chord connecting plate (9) and the frame beam chord angle steel (1) are connected by fillet welds, fully welded; The first support angle steel (3), the second support angle steel (4), the third support angle steel (5) are connected with the vertical bar connecting plate (7) by bolts (10); The frame beam vertical bar angle steel (2) is connected with the first chord connecting plate (8) and the second chord connecting plate (9) through bolts (10); The angle steel (13) of the oblique web of the frame beam (13) is fixed on the first chord connecting plate (8) by bolts (10). 2. The node structure according to claim 1, characterized in that: all steel components, bolts and nuts, and backing plates are treated by hot-dip galvanizing. 3. The joint structure according to claim 1, characterized in that: the grade of the bolt (10) is 8.8, grade A. 4. The node structure according to claim 1, characterized in that: the welding seam must be completed before hot-dip galvanizing. 5. The node structure according to claim 1, characterized in that: the thickness of the cross-shaped hanging plate (6) is determined according to the calculated shear strength of the guy wire load.

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