CN108915083B - A new type of prefabricated cold-formed thick-walled steel frame-support structure system - Google Patents

Abstract

The invention provides a novel assembly type cold-formed thick-wall section steel frame-supporting structure system and a construction method thereof. The structure system comprises a frame column, a frame beam and a support diagonal rod arranged in a space S defined by the frame beam column. The frame column is sleeved with an outer sleeve at the beam column connecting position. The construction method of the structural system comprises the steps of hoisting the frame column, arranging the outer sleeve, installing the connecting piece, installing the frame beam, hoisting the supporting diagonal rod and the like. The structural system has the advantages of less on-site welding workload, high construction speed and small influence on the environment. And the prefabricated assembly type construction is adopted, so that the installation and the operation are simple and convenient. The shock resistance is good. When the structure system is dismantled, can high-efficient recycle, reduce building rubbish, realize green theory.

Description

A new type of prefabricated cold-formed thick-walled steel frame-support structure system

technical field

The invention relates to the field of cold-formed thick-walled steel structures, in particular to a cold-formed thick-walled steel frame-support structure system.

Background technique

As an economical, efficient and high-utilization green building material, cold-formed steel has the characteristics of convenient processing and installation, short construction period, and easy large-scale production. Cold-formed steel structures have become an important form of residential buildings at home and abroad. Because of its higher strength, better ductility and wide applicability, cold-formed thick-walled steel has received extensive attention from scholars at home and abroad, and will also become an important trend in the development of cold-formed steel in the future.

Among the structural systems commonly used in engineering, the frame-support structure system has good seismic performance, flexible use of space, and convenient construction and installation. The connection between beam-column joints and the connection between frame and support is the key issue in the development of the system. In the past, the beam-column joints were usually connected by welding or bolts, but the seismic performance of the welded joints was poor, and the construction period was long due to on-site welding, and the quality was difficult to guarantee; while the high-strength bolted connections had better seismic performance, but for closed sections, Then there are problems such as difficulty in tightening the bolts and cumbersome construction. In addition, in the hollow square steel tube column-beam connection node, the column wall is mostly damaged by tension.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide to solve the problems existing in the prior art.

The technical scheme adopted in order to achieve the purpose of the present invention is as follows, a construction method of a novel prefabricated cold-formed thick-walled steel frame-support structure system, comprising the following steps:

1) Hoist the frame columns of the whole layer in sequence. Wherein, the frame column is a rectangular cold-formed thick-walled steel column.

2) Set an outer sleeve at the beam-column connection of the frame column, and weld the outer sleeve and the surrounding column walls of the frame column.

3) Install connectors in sequence in the same layer. Wherein, the connecting piece includes an end plate, and a first vertical plate and a second vertical plate arranged perpendicular to the end plate. Two connecting pieces are respectively arranged on the opposite side column walls of two adjacent frame columns. The connector is arranged at the beam-column connection. The connecting piece is fixedly connected with the frame column through unilateral bolts. The threaded rod of the unilateral bolt passes through the end plate, the corresponding outer sleeve and the column wall of the frame column in sequence.

4) Install frame beams in sequence within the same floor. Wherein, the frame beams are rolled H-shaped steel beams. After the frame beam is hoisted in place, the second vertical plate of the connector is located in the space S enclosed by the frame beam column. Both ends of the web of the frame beam are in close contact with the first vertical plates of the corresponding connecting pieces respectively and are connected by high-strength bolts.

5) Hoist the supporting inclined rod, and use high-strength bolts to connect the supporting inclined rod and the corresponding connector. Wherein, the supporting inclined rod is a cold-formed thick-walled steel with a crimping groove. The support inclined rods are arranged obliquely, and the two ends of the support inclined rods are respectively fixedly connected to the second vertical plates in the diagonal direction of the space S enclosed by the frame beams and columns. The notch of the supporting inclined rod is away from the plate surface of the first vertical plate.

Further, the outer sleeve is composed of four veneers welded to the surrounding column walls of the frame column. Solder connection between the four boards.

The present invention also discloses a novel prefabricated cold-formed thick-walled steel frame-support structure system prepared by the above construction method, including frame columns, frame beams, and supporting inclined rods arranged in the space S enclosed by the frame beams and columns .

The frame column is sleeved with an outer sleeve at the beam-column connection. The outer sleeve is welded with the surrounding column walls of the frame column.

A connecting piece is arranged at the outer sleeve. The connector includes an end plate, and a first riser and a second riser arranged perpendicular to the end plate. The end plates are fixedly connected with the corresponding outer sleeves and the column walls of the frame columns through unilateral bolts.

The frame beam is connected and fixed with the frame column at the node through the first vertical plate of the connecting piece. The supporting inclined rod is connected and fixed with the frame column through the second vertical plate of the connecting piece.

The technical effect of the present invention is beyond doubt:

A. The on-site welding workload is small, the construction speed is fast, and the impact on the environment is small;

B. The prefabricated construction is adopted, which is easy to install and operate;

C. Cold-formed thick-walled steel members can experience sufficient plastic deformation before failure, and their seismic performance indicators such as ductility and energy dissipation capacity are good;

D. When the structural system is demolished, it can be recycled efficiently, reducing construction waste and realizing the concept of green environmental protection.

Description of drawings

Figure 1 is a schematic diagram of the frame-support structure architecture;

Figure 2 is the overall effect diagram of the frame-support structure system;

Fig. 3 is the connection relation diagram of the support inclined rod;

Figure 4 is a schematic diagram of the structure of the connector;

FIG. 5 is a diagram showing the connection relationship of the connector.

In the figure: space S, frame column 1, frame beam 2, support inclined rod 3, connecting piece 4, end plate 401, first vertical plate 402, second vertical plate 403, outer sleeve 5, sticker 501.

Detailed ways

The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes can be made according to common technical knowledge and conventional means in the field, which shall be included in the protection scope of the present invention.

Example 1:

The present embodiment discloses a construction method of a novel prefabricated cold-formed thick-walled steel frame-support structure system, comprising the following steps:

1) Hoist the frame column 1 of the whole layer in sequence. Wherein, the frame column 1 is a rectangular cold-formed thick-walled steel column.

2) At the construction site, set the outer sleeve 5 at the beam-column connection of the frame column 1, and weld the outer sleeve 5 and the surrounding column walls of the frame column 1.

3) Install connectors 4 in sequence in the same layer. Wherein, the connecting member 4 includes an end plate 401 , and a first vertical plate 402 and a second vertical plate 403 arranged perpendicular to the end plate 401 . Two connecting pieces 4 are respectively arranged on the opposite side column walls of two adjacent frame columns 1 . The connecting piece 4 is arranged at the beam-column connection. The connecting piece 4 is fixedly connected with the frame column 1 by means of unilateral bolts. The threaded rods of the unilateral bolts pass through the end plate 401 , the corresponding outer sleeve 5 and the column wall of the frame column 1 in sequence.

4) Install frame beams 2 in sequence on the same floor. Wherein, the frame beam 2 is a rolled H-shaped steel beam. After the frame beam 2 is hoisted in place, the second vertical plate 403 of the connector 4 is located in the space S enclosed by the frame beam column. Both ends of the web of the frame beam 2 are in close contact with the first vertical plate 402 of the corresponding connecting piece 4 respectively and are connected by high-strength bolts.

5) Hoist the support inclined rod 3, and use high-strength bolts to connect the support inclined rod 3 and the corresponding connecting piece 4. Wherein, the support inclined rod 3 is a cold-formed thick-walled section steel of a crimping groove type. The support inclined rods 3 are arranged obliquely, and two ends of the support inclined rods 3 are respectively fixedly connected with the second vertical plates 402 in the diagonal direction of the space S enclosed by the frame beams and columns. The notch of the support inclined rod 3 faces away from the plate surface of the first vertical plate 402 .

It is worth noting that this embodiment solves the problem of frame and support connection and its assembly construction, improves the seismic performance of the cold-formed steel structure, adopts prefabricated assembly construction, and has less on-site welding workload, fast construction speed, and environmental impact. small impact.

Example 2:

1 and 2, the present embodiment discloses a novel prefabricated cold-formed thick-walled steel frame-support structure system prepared by the construction method described in Embodiment 1, including a frame column 1 and a frame beam 2, and a The frame beams and columns form the supporting inclined rods 3 in the space S.

Referring to FIG. 3 , the frame-support structure system is described by taking two adjacent frame columns 1 and corresponding two frame beams 2 as examples. The two frame columns 1 are marked as a first frame column and a second frame column.

The frame column 1 is sleeved with an outer sleeve 5 at two beam-column connections. The outer sleeve 5 is composed of four stickers 501 welded to the surrounding column walls of the frame column 1 . The four boards 501 are connected by welding. Two connecting pieces 4 are respectively arranged on the opposite side walls of the first frame column and the second frame column. The connecting piece 4 is arranged at the beam-column connection.

Referring to FIG. 3 , the connecting member 4 includes an end plate 401 , and a first vertical plate 402 and a second vertical plate 403 arranged perpendicular to the end plate 401 . The end plate 401 , the first riser 402 and the second riser 403 are all arranged vertically. The plate surfaces of the first vertical plate 402 and the second vertical plate 403 are located in the same plane. The connecting piece 4 is fixedly connected with the frame column 1 by means of unilateral bolts. The threaded rods of the unilateral bolts pass through the end plate 401 , the corresponding outer sleeve 5 and the column wall of the frame column 1 in sequence. Among the 4 connecting pieces 4, the connecting piece 4 at the upper part of the first frame column is marked as the first connecting piece, the connecting piece 4 at the lower part of the first frame column is marked as the second connecting piece, and the connecting piece at the upper part of the second frame column is marked as the second connecting piece 4 is marked as the third connecting piece, and the connecting piece 4 at the lower part of the second frame column is marked as the fourth connecting piece. In the first connecting piece and the fourth connecting piece, the first riser 402 is located above the second riser 403 . In the second connecting piece and the third connecting piece, the first riser 402 is located below the second riser 403 . The second vertical plate 403 is located in the space S enclosed by the frame beams and columns.

The two frame beams 2 are marked as an upper frame beam and a lower frame beam. The upper frame beam is connected and fixed to the frame column 1 at the node through the first vertical plate 402 of the first connecting piece and the fourth connecting piece. The lower frame beam is connected and fixed with the frame column 1 at the node through the first vertical plate 402 of the second connecting piece and the third connecting piece. Both ends of the web of the frame beam 2 are in close contact with the first vertical plate 402 of the corresponding connecting piece 4 respectively and are connected by high-strength bolts.

The two inclined support rods 3 are marked as a first inclined support rod and a second inclined support rod. The first supporting inclined rod is connected and fixed to the frame column 1 through the first connecting piece and the second vertical plate 403 of the third connecting piece. Referring to FIG. 5 , the second support inclined rod is connected and fixed to the frame column 1 through the second connecting member and the second vertical plate 403 of the fourth connecting member. The notch of the support inclined rod 3 faces away from the plate surface of the first vertical plate 402 . The frame column 1 and the frame beam 2 are connected to form a frame system, and the supporting inclined rods 3 are arranged in the frame to form a frame-support system.

In this embodiment, cold-formed thick-walled steel is used as the main force-bearing member of the frame-support structure system. At the beam-column connection, the column wall at the node is thickened through the outer sleeve 5, and the H-shaped steel frame is rolled by the connecting piece. The beam, the rectangular cold-formed thick-walled steel column and the crimping groove-shaped cold-formed thick-walled steel support are connected to form a prefabricated cold-formed thick-walled steel frame-support structure system. The cold-formed thick-walled steel components are used, which have good seismic performance. All the components are prefabricated in the factory. Except for the outer sleeve 5 that needs to be welded on the construction site, the prefabricated components are directly assembled into a structural skeleton with unilateral bolts and high-strength bolts. The prefabricated construction can significantly improve the construction efficiency and accelerate the development of prefabricated buildings.

Claims (2)

1. A construction method of a novel assembly type cold-formed thick-wall steel frame-supporting structure system is characterized by comprising the following steps:

1) hoisting the whole layer of frame columns (1) in sequence; the frame column (1) is a rectangular cold-bending thick-wall section steel column;

2) sleeving an outer sleeve (5) at the beam-column connection part of the frame column (1), and welding the outer sleeve (5) and the peripheral column wall of the frame column (1); wherein, the outer sleeve (5) is composed of four flitch plates (501) welded on the peripheral column wall of the frame column (1); the four flitch plates (501) are connected by welding;

3) connecting pieces (4) are sequentially arranged in the same layer; wherein the connection (4) comprises an end plate (401), and a first riser (402) and a second riser (403) arranged perpendicular to the end plate (401); two connecting pieces (4) are respectively arranged on the opposite side column walls of two adjacent frame columns (1); the connecting piece (4) is arranged at the beam-column connection part; the connecting piece (4) is fixedly connected with the frame column (1) through a unilateral bolt; the screw of the unilateral bolt sequentially penetrates through the end plate (401), the corresponding outer sleeve (5) and the column wall of the frame column (1);

4) frame beams (2) are sequentially arranged in the same layer; wherein the frame beam (2) is a rolled H-shaped steel beam; after the frame beam (2) is hoisted in place, a second vertical plate (403) of the connecting piece (4) is positioned in a space S surrounded by the frame beam columns; two ends of a web plate of the frame beam (2) are respectively clung to a first vertical plate (402) of the corresponding connecting piece (4) and connected through a high-strength bolt;

5) hoisting the supporting diagonal rods (3), and connecting the supporting diagonal rods (3) with the corresponding connecting pieces (4) by using high-strength bolts; the support diagonal rod (3) is made of rolled edge groove type cold-formed thick-walled section steel; the support diagonal rods (3) are obliquely arranged, and two ends of each support diagonal rod (3) are fixedly connected with a second vertical plate (403) in the diagonal direction of a space S surrounded by the frame beam columns respectively; the notch of the supporting diagonal rod (3) faces away from the surface of the first vertical plate (402).

2. A novel fabricated cold-formed thick-walled steel frame-supporting structural system manufactured by the construction method of claim 1, wherein the fabricated cold-formed thick-walled steel frame-supporting structural system is characterized in that: comprises a frame column (1), a frame beam (2) and a support diagonal rod (3) arranged in a space S enclosed by the frame beam and the frame column;

an outer sleeve (5) is sleeved at the beam-column connection position of the frame column (1); the outer sleeve (5) is welded with the peripheral column wall of the frame column (1);

a connecting piece (4) is arranged at the outer sleeve (5); the connector (4) comprises an end plate (401), and a first riser (402) and a second riser (403) arranged perpendicular to the end plate (401); the end plate (401) is fixedly connected with the corresponding outer sleeve (5) and the column wall of the frame column (1) through a single-side bolt;

the frame beam (2) is fixedly connected with the frame column (1) at a node through a first vertical plate (402) of a connecting piece (4); the supporting diagonal rod (3) is fixedly connected with the frame column (1) through a second vertical plate (403) of the connecting piece (4).

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