CN112878697A

CN112878697A - Construction method for drum-shaped connecting structure of inclined cross steel column

Info

Publication number: CN112878697A
Application number: CN201911204624.4A
Authority: CN
Inventors: 王晓科; 胡毅; 张海礁; 蒋周; 陈旭明; 柯旺
Original assignee: Beijing Urban Construction Group Co Ltd; MCC Shanghai Steel Structure Technology Co Ltd
Current assignee: Beijing Urban Construction Group Co Ltd; MCC Shanghai Steel Structure Technology Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-01
Anticipated expiration: 2039-11-29
Also published as: CN112878697B

Abstract

The invention particularly relates to a construction method for a drum-shaped connecting structure of an inclined cross steel column; the method is characterized in that: the steel plate is used as a cross-shaped steel column, an upper cover plate and a lower cover plate which are connected by H-shaped steel, and a cross-shaped steel column inner conversion plate (11), wherein four cross-shaped steel column inner conversion plates are arranged inside a connection node, the angle of a section is 35 degrees, and the cross-shaped steel column inner conversion plates are completely welded with a steel column body; and sequentially welding all the constructed rest parts. The connection mode of the cross-shaped steel column and the H-shaped steel is very rare in engineering, and is generally realized by adopting cast steel nodes and other forms. The construction method adopts a steel plate drum-shaped connection mode and adopts a mode of an inner arc-shaped conversion plate, an outer arc-shaped conversion plate and a reinforcing plate, the processing and the manufacturing are time-saving and labor-saving, the stress safety is met, the building appearance requirement is met, and the processing period is shortened.

Description

Construction method for drum-shaped connecting structure of inclined cross steel column

Technical Field

The invention relates to the field of steel structure construction, in particular to a construction method for a drum-shaped connecting structure of an inclined cross steel column.

Background

In the design process of a steel structure, the steel columns and the steel beams mostly adopt the cross section forms of rectangles, H-shaped and round tubes and the like as the main forms, and the connecting modes between the beams and the columns also mostly adopt the rectangular steel plates to form all-welded, all-bolted and bolted connection forms. In the steel column connection node in the cross-shaped inclined state, the cross section of the connection node is not a rectangle, an H-shaped, a circular tube type, and the like, and thus, the conventional connection form cannot be completely applied to the connection node in the inclined state.

Disclosure of Invention

The invention aims to overcome the defects and provides a structure for connecting a cross-shaped inclined steel column and a four-direction H-shaped steel beam and a manufacturing method thereof.

In order to achieve the above object, the present invention is realized by:

a construction method for a drum-shaped connecting structure of an inclined cross steel column; the method comprises the following steps:

step 1, adopting a steel plate with the thickness of t =30mm as a cross-shaped steel column, an upper cover plate and a lower cover plate which are connected with H-shaped steel, and setting out a cross-shaped notch on the steel plate according to the inclination angle of the steel column, wherein the bevel angle of the notch is 35 degrees;

step 2, using a t =30mm thick steel plate as a cross-shaped steel column inner conversion plate, wherein the bending radius R =650mm, and the specific form is determined according to the outer contour of a steel column;

step 3, arranging four cross-shaped steel column inner conversion plates in the connection node, wherein the section angle is 35 degrees, and the cross-shaped steel column inner conversion plates are completely welded with the steel column body;

step 4, welding the steel beam and the steel column connecting steel plate with a bevel of the cross-shaped steel column inner conversion plate, wherein the bevel angle is 35 degrees, and welding seam overlapping is avoided during welding;

step 5, using a steel plate with the thickness of t =20mm as the upper surface and the lower surface of a steel column and steel beam connecting plate to form double-sided V-shaped grooves, and completely melting and welding the double-sided V-shaped grooves with an upper cover plate and a lower cover plate;

step 6, welding a steel plate with the thickness of t =30mm serving as an external reinforcing steel plate with a steel beam connecting plate groove, wherein the groove angle is 35 degrees;

and 7, sequentially welding all the constructed rest parts.

The connection mode of the cross-shaped steel column and the H-shaped steel is very rare in engineering, and is generally realized by adopting cast steel nodes and other forms. The construction method adopts a steel plate drum-shaped connection mode and adopts a mode of an inner arc-shaped conversion plate, an outer arc-shaped conversion plate and a reinforcing plate, the processing and the manufacturing are time-saving and labor-saving, the stress safety is met, the building appearance requirement is met, and the processing period is shortened.

Drawings

Fig. 1 is a schematic structural view of a connection node of an inclined cross steel column and a steel beam.

Fig. 2 is a node connection crater number diagram.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1 and 2, a construction method for a drum-shaped connecting structure of an inclined cross steel column; the method comprises the following steps:

step 1, adopting a steel plate with the thickness t =30mm as a cross-shaped steel column, an upper cover plate 1 and a lower cover plate 2 connected with H-shaped steel, and setting out a cross-shaped notch on the steel plate according to the inclination angle of the steel column, wherein the bevel angle of the notch is 35 degrees;

step 2, using a t =30mm thick steel plate as a cross-shaped steel column inner conversion plate 11, wherein the bending radius R =650mm, and the specific form is determined according to the outer contour of a steel column;

step 3, arranging four cross-shaped steel column inner conversion plates 11 in the connection node, wherein the section angle is 35 degrees, and the cross-shaped steel column inner conversion plates are completely welded with the steel column body;

step 4, welding the steel beam and the steel column connecting steel plates 3, 4, 5 and 6 with a bevel of the cross-shaped steel column inner conversion plate 11, wherein the bevel angle is 35 degrees, and welding seam overlapping is avoided during welding;

step 5, using a steel plate with the thickness of t =20mm as the upper surface and the lower surface of a steel column and steel beam connecting plate to form double-sided V-shaped grooves, and completely melting and welding the double-sided V-shaped grooves with an upper cover plate 1 and a lower cover plate 2;

step 6, adopting a t =30mm thick steel plate as an external reinforcing steel plate 7, 8, 9 and 10 to be welded with the steel beam connecting plate 3, 4, 5 and 6 in a split mode, wherein the split angle is 35 degrees;

and 7, welding the connecting steel plates in sequence: welding between an internal conversion steel plate No. 12 weld crater and a steel column → welding between internal conversion steel plates of a steel beam connecting plate No. 13 weld craters → welding between upper and lower opposite type weld craters and a steel beam connecting plate No. 14 weld craters, and welding between an external reinforcing steel plate and a steel beam connecting plate No. 16 weld craters; wherein, the steel material is Q355NHD, the welding adopts the special welding wire of weathering resistant steel, the welding wire brand TH-500-NQ-II carries on the welding.

Claims

1. A construction method for a drum-shaped connecting structure of an inclined cross steel column; the method is characterized in that: the method comprises the following steps:

step 1, adopting a steel plate with the thickness of t =30mm as a cross-shaped steel column, an upper cover plate (1) and a lower cover plate (2) connected with H-shaped steel, and setting out a cross-shaped notch on the steel plate according to the inclination angle of the steel column, wherein the groove angle of the notch is 35 degrees;

step 2, using a t =30mm thick steel plate as a cross-shaped steel column inner conversion plate (11), wherein the bending radius R =650mm, and the specific form is determined according to the outer contour of a steel column;

step 3, arranging four cross-shaped steel column inner conversion plates (11) in the connection node, wherein the section angle is 35 degrees, and the cross-shaped steel column inner conversion plates are completely welded with the steel column body;

step 4, welding the steel beam and the steel column connecting steel plates (3), (4), (5) and (6) with a bevel of the cross-shaped steel column inner conversion plate (11), wherein the bevel angle is 35 degrees, and welding seam overlapping is avoided during welding;

step 5, using a steel plate with the thickness of t =20mm as the upper surface and the lower surface of the steel column and steel beam connecting plate to form double-sided V-shaped grooves, and completely melting and welding the double-sided V-shaped grooves with the upper cover plate (1) and the lower cover plate (2);

step 6, adopting a thick steel plate with t =30mm as an external reinforcing steel plate (7), (8), (9) and (10) to be welded with the section of the steel beam connecting plate (3), (4), (5) and (6), wherein the section angle is 35 degrees;

and 7, sequentially welding all the constructed rest parts.