CN104481060B - Complete prefabricated quick assembled type Lightgage Steel Joist load-bearing combined wall - Google Patents

Abstract

The invention discloses a fully prefabricated and quickly assembled light steel keel load-bearing composite wall, which includes a square steel pipe column, upper and lower guide rails and a wall unit, the guide rail is a light steel U-shaped guide rail with flanges and webs, and the wall unit slides It is filled in the frame formed by square steel pipe columns at both ends and upper and lower light steel U-shaped guide rails; the wall unit is a prefabricated load-bearing component, consisting of a pair of wall panels and light steel keel columns sandwiched therein and thermal insulation filling materials, the top A parallel chute is formed between the inner side of the wall panel at the bottom and the thermal insulation filling material and the light steel keel column, and the parallel chute is slidingly matched with the upper and lower guide rails; the flanges of the upper and lower guide rails are connected with the light steel keel column in the wall unit through screws Connection, the guide rail and the square steel pipe column are connected by screws. The invention has few types of components, light weight, low steel consumption, heat preservation and sound insulation, no wet operation and welding process on the construction site, no need for large lifting equipment, rapid and fully prefabricated assembly construction, and is suitable for low and multi-storey buildings. wall system.

Description

Fully prefabricated quick-assembled light steel keel load-bearing composite wall

technical field

The invention relates to a prefabricated building structure, in particular to a rapid construction and fully prefabricated assembled light steel keel load-bearing composite wall structure, which belongs to the technical field of civil engineering.

Background technique

Compared with the traditional reinforced concrete structure, the steel structure has the characteristics of green environmental protection, good seismic performance, fast construction speed, and recyclable materials. With the rapid development of the national economy, my country's steel output has leapt to the first place in the world, and the domestic steel structure industry has also developed rapidly. However, compared with developed countries, the proportion of steel structure buildings in my country's steel output is still significantly low. Significant gaps still exist. my country is in the stage of rapid industrialization and urbanization, the annual project construction volume is huge, the resource consumption is serious, and the pressure of environmental degradation is huge. The development of green buildings has been listed as a priority theme in the key areas of the national medium and long-term scientific and technological development plan outline Therefore, vigorously developing steel structure buildings with green environmental protection and excellent seismic performance is in line with my country's basic national conditions. It is of great significance to save resources and energy, reduce environmental pollution, and promote sustainable social development. It is also a way to speed up my country's construction industrialization and industrialization. Effective Ways.

Cold-formed steel, also known as cold-formed thin-walled steel, is formed by cold-working steel sheets, steel strips, steel plates or flat steel bars, and the common thickness is 0~2mm. Compared with traditional hot-rolled steel, cold-formed steel can economically obtain a more reasonable cross-sectional shape, and then obtain a satisfactory strength-to-weight ratio. Therefore, in steel structure buildings, the rational use of cold-formed steel can significantly reduce the amount of steel used .

In the cold-formed steel composite wall in the prior art, the C-shaped light steel keel columns are generally arranged at equal intervals of 400mm or 600mm and connected with light steel U-shaped guide rails by self-tapping screws to form a light steel skeleton, and then the light steel skeleton one Install wall panels (gypsum boards, glass magnesium boards, etc.) with self-tapping screws on the side with a spacing of less than 300mm. After the wall panels on one side are installed, fill the cavity of the combined wall structure with insulating materials (rock wool, glass wool, lightweight foamed cement, etc.), and then carry out wall panel construction on the other side of the light steel skeleton. This creates a cold-formed steel composite wall structure. It can be seen that the cold-formed steel composite wall structure in the prior art includes a total of four construction processes including cold-formed steel keel skeleton, wall panels on both sides, and cavity filling layer. Hundreds of self-contained stones are also involved in the construction process of each wall. Tapping screws for on-site installation. In addition, fibrous insulation materials such as rock wool and glass wool are easy to contact with the human respiratory tract or skin during construction, which may be harmful to human health, and pouring lightweight foamed cement on site in the composite wall structure will not only lead to A lot of wet work will also slow down the construction progress of the wall structure.

The applicant previously proposed a prefabricated and assembled light steel fire-resistant load-bearing composite wall structure (CN103437463A), which is composed of sandwich wall panel units on both sides and a light steel keel skeleton unit in the middle. Each sandwich wall panel unit includes A-side and B-side wall panels, and between the A-side and B-side wall panels, there are autoclaved aerated concrete slats and thermal insulation cotton, which are adjacent on the same side The sandwich wall panel unit is spliced by inserting autoclaved aerated concrete butt joint slats in the grooves of its long sides, which realizes the prefabricated assembly of the firewall body, but still requires a large number of self-supplied screws, and the installation process is cumbersome. It has become a technical problem to be solved urgently to design a rapid construction and fully prefabricated light steel keel load-bearing composite wall structure.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a fully prefabricated and quickly assembled light steel keel load-bearing composite wall for rapid construction.

Technical solution: In order to solve the above technical problems, the present invention provides a fully prefabricated quick-assembled light steel keel load-bearing composite wall, including square steel pipe columns, upper and lower guide rails and wall units. Steel U-shaped guide rail, the wall unit slides and fills in the frame formed by the square steel pipe columns at both ends and the upper and lower light steel U-shaped guide rails; the wall unit is a prefabricated load-bearing component, consisting of a pair of wall panels and clamped on Among them, the light steel keel column and the thermal insulation filling material are formed. Parallel chute is formed between the inner side of the top and bottom wall panels and the prefabricated thermal insulation material and the light steel keel column, and the parallel chute is slidingly matched with the upper and lower guide rails; The flanges of the upper and lower guide rails are connected to the light steel keel columns by screws, and the guide rails are connected to the square steel pipe columns by screws.

As a preference, in order to increase the connection contact area between the U-shaped guide rail and the square steel pipe column, so that the subsequent sandwich wall unit can be installed between the guide rails during construction, the web at the end of the guide rail has a right-angle bend, and the guide rail is close to the end The flanges of the have cutouts for fitting into the wall unit.

Preferably, in order to form a firm connection structure between the wall unit and the column and the guide rail, the load-bearing sandwich wall unit includes an end load-bearing sandwich wall unit and a middle load-bearing sandwich wall unit, and the end load-bearing sandwich wall unit The light steel keel column is located on one side of the unit, and the light steel keel column of the middle load-bearing sandwich wall unit is located in the middle of the unit. The load-bearing sandwich wall unit in the middle adopts a fixed modulus with a width of 400 or 600mm, and the width of the load-bearing sandwich wall unit at the end is less than 600mm.

Preferably, in order to facilitate splicing between adjacent sandwich wall units and to form an integral load-bearing structure after installation, the load-bearing sandwich wall units have grooves and tenons on both sides of the long sides that cooperate with each other.

Preferably, in order to improve the compression and thermal insulation performance of the column, the square steel tube column is filled with foamed concrete.

As a preference, the wall panel preferably has a thickness of 3-15mm gypsum board or glass magnesium board, and the thermal insulation filling material is preferably lightweight foamed cement.

As a preference, in order to make the mutual connection of each structural member more compact, the thickness of the thermal insulation filling material, the section width of the side perpendicular to the length direction of the square steel pipe column and the guide rail, and the width of the web of the light steel keel column are all the same as the web of the guide rail. Same width.

The present invention simultaneously proposes a construction method for the above-mentioned assembled light steel keel load-bearing composite wall structure, including the following steps:

1) Vertically fix the square steel pipe columns, and use self-tapping screws to connect the upper and lower guide rails with the square steel pipe columns at both ends to form a frame;

2) Then install the load-bearing sandwich wall unit at the end from the cutout of the guide rail, and slide it into place along the guide rail;

3) Install the rest of the load-bearing sandwich wall units in the middle and end in sequence, and slide them into place by using the sliding fit between the chute and the guide rail;

4) Use self-tapping screws to fix the light steel keel column in the load-bearing sandwich wall with the flanges of the upper and lower guide rails, and connect the square steel pipe column to the web of the light steel keel column in the end load-bearing sandwich wall unit.

Beneficial effects: the present invention combines wall panels, thermal insulation materials and light steel keels to prefabricate a sandwich-type load-bearing unit—a sandwich wall unit—in a factory. The weight of each sandwich wall unit is less than 50kg, and the construction phenomenon can be carried by manual or small equipment without large lifting equipment. The light steel keel composite wall of the present invention can be fully prefabricated and assembled, and the construction process is greatly simplified compared with the existing cold-formed steel composite wall. The construction site only needs to cut the load-bearing sandwich wall unit from the end flange of the U-shaped guide rail. Sliding in turn, it is located in the steel frame formed by square steel pipe columns and U-shaped guide rails. Adjacent sandwich wall units are spliced through mutually matching grooves and tenons, and then the sandwich wall units, U-shaped The guide rail and the square steel pipe column can be fixedly connected. There is no wet operation on the construction site, no fiber insulation material construction, green and environmental protection. At the same time, this type of composite wall structure also has good sound insulation and heat insulation performance. It is suitable for the load-bearing wall system of steel structure buildings, and can also be used as a non-load-bearing partition wall. . Due to its few types of components and light weight, it realizes rapid and fully prefabricated assembly construction. At the same time, it has the characteristics of low steel consumption, heat preservation, and sound insulation. It can be widely used in low and multi-storey building wall systems.

In addition to the above-mentioned technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of these technical solutions, the rapid construction and fully prefabricated light steel keel load-bearing composite wall of the present invention Other technical problems that the structure can solve, other technical features included in the technical solution, and the advantages brought by these technical features will be further described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the schematic diagram of the prefabricated light steel load-bearing composite wall structure of the embodiment of the present invention;

Fig. 2 is a schematic structural view of the end load-bearing sandwich wall unit in Fig. 1;

Fig. 3 is a sectional view at 1-1 place among Fig. 2;

Fig. 4 is a sectional view at 2-2 in Fig. 2;

Fig. 5 is a schematic structural view of the middle load-bearing sandwich wall unit in Fig. 1;

Fig. 6 is a cross-sectional view at 1-1 in Fig. 5;

Fig. 7 is a cross-sectional view at 2-2 in Fig. 5;

Fig. 8 is a schematic structural diagram of the U-shaped guide rail in Fig. 1;

Fig. 9 is an installation schematic diagram of connecting the upper and lower guide rails with the self-tapping screws of the square steel pipe columns at both ends to form a frame in the embodiment;

Fig. 10 is a schematic diagram of the installation of the end load-bearing sandwich wall unit from the position where the flange is cut off from the guide rail in the embodiment;

Figure 11 is a schematic diagram of the installation of the remaining load-bearing sandwich wall units installed in sequence and sliding in place;

Figure 12 is a schematic diagram of the installation of the load-bearing sandwich wall unit, the upper and lower guide rails and the square steel pipe column connected by self-tapping screws;

Each label in the figure: square steel pipe column 1; end load-bearing sandwich wall unit 2; middle load-bearing sandwich wall unit 3; light steel keel column 4; light steel U-shaped guide rail 5; self-tapping screw 6; prefabricated thermal insulation material 7; lightweight foam concrete 8; wall panels 9; grooves 10; runners 11; tenons 12;

detailed description

Example:

The fully prefabricated and quick-assembled light steel keel load-bearing composite wall structure of this embodiment is shown in Figure 1, by sequentially filling the end load-bearing sandwich wall unit 2 and the middle load-bearing sandwich wall unit 3 into square steel pipes at both ends. In the frame formed by the column 1 and the upper and lower U-shaped guide rails 5, self-tapping screws 6 are connected and fixed.

As shown in Figure 2, Figure 3 and Figure 4, the end load-bearing sandwich wall unit 2 includes wall panels 9 on both sides, one end of which is equipped with a light steel keel column 4 made of channel steel, and the notch of the channel steel faces The inner side of the wall unit; the other end has a groove 10, and a tenon structure can also be used, and the tenon and the groove match each other. The space enclosed by the wall panel 9 and the light steel keel column 4 is filled with prefabricated thermal insulation material 7 . At the top and bottom, a parallel chute 11 is formed between the inner side of the wall panel 9 and the prefabricated thermal insulation material 7 , and the chute 11 passes through the gap between the light steel keel column 4 and the wall panel 9 at the same time.

As shown in Figure 5, Figure 6 and Figure 7, the load-bearing sandwich wall unit 3 in the middle also includes wall panels 9 on both sides and prefabricated thermal insulation materials 7 inside, and a light steel keel column 4 made of channel steel is installed in the middle , with tenons 12 and grooves 10 on both sides, and chute 11 with the same structure as the end load-bearing sandwich wall unit at the top and bottom.

The width of the load-bearing sandwich wall unit is less than 600mm. Two wall panels (gypsum board or glass magnesium board) are used as templates. Light steel keel columns are preset between the two wall panels. Spacers are required between light steel keel columns and panels. Open a certain thickness, which is slightly larger than the thickness of the U-shaped guide rail flange. Then pour lightweight foamed cement into the cavity formed by two wall panels and light steel keel columns. After the foamed cement is solidified, the sandwich wall unit is self-contained, weighing less than 50Kg, and can be handled manually or by small equipment. In the factory, the sandwich wall units are prefabricated in batches according to the project requirements and delivered to the project site.

In a factory or a construction site, square steel pipe columns 1 filled with lightweight foam concrete 8 are prefabricated in batches. Foam concrete does not affect the self-tapping screw construction of the square steel pipe column, and can effectively improve the compression and thermal insulation performance of the square steel pipe column.

As shown in Figure 8, the light steel U-shaped guide rail 5 has a flange and a web, the web at the end has a bend 13, and the flange near the end has a cutout 14 for loading into a wall unit.

In the factory or construction site, the light steel U-shaped guide rail 5 is processed in batches. First, the flange at the end of the U-shaped guide rail is cut and separated from the web, and the web is bent at a right angle to increase the distance between the U-shaped guide rail and the square steel pipe column. Connect the contact area, and then cut off the flange of the U-shaped guide rail in the range of about 600mm near one end, so as to facilitate the subsequent construction of the sandwich wall unit.

When in use, as shown in Figures 9 to 12, the rapid and fully prefabricated construction of the light steel keel composite wall structure is realized according to the following procedures:

First, the square steel pipe column 1 filled with lightweight foam concrete is vertically fixed to the ground (floor), arranged vertically and continuously along the floor, and the upper and lower guide rails 5 are connected with the square steel pipe columns 1 at both ends to form a frame with self-tapping screws 6 , and Cut off the flange to form a notch 14 in the range of 600 mm near one end of the guide rail 5 .

Then install the end load-bearing sandwich wall unit 2 from the flange cut-off position of the guide rail 5, and slide it into place along the guide rail

Install the rest of the middle and end load-bearing sandwich wall units 3 in turn, and utilize the sliding cooperation between the parallel chute and the guide rail 5 on the inside of its top and bottom wall panels to slide it in place. The flange of the guide rail is inserted into the chute at the top and bottom of the sandwich wall unit to form a reliable fixation. At the same time, the light steel keel column inside the wall unit is supported between the upper and lower guide rails to form a reliable load-bearing structure.

Finally, self-tapping screws 6 are used to fix the light steel keel column 4 in the load-bearing sandwich wall with the flanges of the upper and lower guide rails 5, and the square steel tube column 1 is connected to the abdomen of the light steel keel column 4 in the end load-bearing sandwich wall unit. Board fixed connection.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, within the scope of the principles and technical ideas of the present invention, various changes, modifications, substitutions and deformations to these embodiments still fall within the protection scope of the present invention.

Claims (7)

1. A fully prefabricated quick-assembled light steel keel load-bearing composite wall, comprising square steel pipe columns, upper and lower guide rails and wall units, characterized in that: the guide rail is a light steel U-shaped guide rail with flanges and webs, The wall unit is slid and filled in the frame formed by the square steel pipe columns at both ends and the upper and lower light steel U-shaped guide rails; the wall unit is a prefabricated load-bearing sandwich wall unit, which consists of a pair of wall panels and a The light steel keel column and the thermal insulation filling material are composed of a parallel chute formed between the top and bottom wall panels and the thermal insulation filling material and the light steel keel column, and the parallel chute is slidingly matched with the upper and lower guide rails; the upper and lower The flange of the guide rail is connected to the light steel keel column by screws, and the guide rail is connected to the square steel pipe column by screws; the web at the end of the guide rail is bent at a right angle, and the flange near the end of the guide rail has Cutouts for fitting into wall units. 2. The fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that: the load-bearing sandwich wall unit includes an end load-bearing sandwich wall unit and a middle load-bearing sandwich wall unit, the The light steel keel column of the end load-bearing sandwich wall unit is located on one side of the unit, and the light steel keel column of the middle load-bearing sandwich wall unit is located in the middle of the unit. 3. The fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that: both sides of the long side of the load-bearing sandwich wall unit have grooves and tenons that cooperate with each other. 4. The fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that: the wall panels are gypsum boards or glass magnesium boards with a thickness of 3 to 15 mm, and the thermal insulation filling materials are Lightweight foamed cement. 5. The fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that: the thickness of the thermal insulation filling material, the section width of the side perpendicular to the length direction of the square steel pipe column and the guide rail, the light steel The web width of the keel column is the same as that of the guide rail. 6. The fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that: the square steel pipe column is filled with foam concrete. 7. The construction method of the fully prefabricated quick-assembled light steel keel load-bearing composite wall according to claim 1, characterized in that it comprises the following steps: 1) Vertically fix the square steel pipe columns, and use self-tapping screws to connect the upper and lower guide rails with the square steel pipe columns at both ends to form a frame; 2) Then install the load-bearing sandwich wall unit at the end from the cutout of the guide rail, and slide it into place along the guide rail; 3) Install the rest of the load-bearing sandwich wall units in the middle and end in sequence, and slide them into place by using the sliding fit between the chute and the guide rail; 4) Use self-tapping screws to fix the light steel keel column in the load-bearing sandwich wall with the flanges of the upper and lower guide rails, and connect the square steel pipe column to the web of the light steel keel column in the end load-bearing sandwich wall unit.