CN107795140A - Continuous reinforcing method for existing simple-supported C-shaped purline - Google Patents

Abstract

The invention discloses a continuous reinforcement method for existing simply supported C-shaped purlins. Thin-walled L-shaped steel is embedded in the ends of two adjacent simply supported C-shaped purlins so that two adjacent simply supported C-shaped purlins are connected to form a continuous purlin; simply supported C-shaped purlins and embedded thin-walled L-shaped steel are at the place where the support passes through the purlin support Bolt connection, self-tapping screw connection or adhesive connection is used within the lap joint range of simply supported C-shaped purlins and embedded thin-walled L-shaped steel. The reinforcement method can effectively solve the problem of insufficient bearing capacity of the existing simply supported C-shaped purlins, and the construction is convenient.

Description

A Continuous Reinforcement Method of Existing Simply Supported C-shaped Purlins

technical field

The invention relates to a structural reinforcement in the technical field of building steel structure engineering, in particular to a reinforcement method for existing simply supported C-shaped purlins.

Background technique

Cold-formed thin-walled purlins are divided into simply supported purlins and continuous purlins according to the connection node form. Simply supported C-shaped purlins are widely used in light steel structure roofs and walls. During the use of the house, due to factors such as increased loads or changes in use functions, the bearing capacity of simply supported purlins is insufficient, and simple supported purlins need to be reinforced. Usually, methods such as replacing purlin components or increasing purlins to reduce purlin spacing are used, but construction is troublesome. Low efficiency and high cost.

Contents of the invention

In order to solve the problems of time-consuming, high cost, and difficult construction of the existing simple-supported C-shaped purlin member reinforcement method, the present invention proposes a continuous reinforcement method for the existing simply-supported C-shaped purlin. The reinforcement method has simple structure, convenient processing, and low cost. Low, can significantly improve the bearing capacity of existing simply supported C-shaped purlins.

In order to achieve the above object, the technical solution adopted by the present invention is to embed thin-walled L-shaped steel between adjacent simply supported C-shaped purlins. The size of the embedded thin-walled L-shaped steel should match the size of the simply supported C-shaped purlin. One solution is to connect the embedded thin-walled L-shaped steel and C-shaped purlins with self-tapping screws, including adjacent simply supported C-shaped purlins, embedded thin-walled L-shaped steels, and self-tapping screws. The embedded thin-walled L-shaped steel is pre-drilled at the position corresponding to the bolt hole at the end of the simply supported C-shaped purlin in the middle, and then inserted into the end of the adjacent simply supported C-shaped purlin. The embedded thin-walled L-shaped steel is placed on the support The purlin support and C-shaped purlin bolts are connected at the place, and the thin-walled L-shaped steel is embedded with the simply supported C-shaped purlin web or connected with self-tapping screws on the upper and lower flanges at the same time; another option is to embed thin-walled L-shaped steel Structural glue is used to connect with simply supported C-shaped purlins, including adjacent existing simply supported C-shaped purlins, embedded thin-walled L-shaped steel, and adhesive bonding layer. The embedded thin-walled L-shaped steel is pre-drilled in the middle part corresponding to the bolt hole at the end of the simply supported C-shaped purlin, and then the structural glue is applied within the nesting length range of the simply supported C-shaped purlin and the embedded thin-walled L-shaped steel. Thin-walled L-shaped steel is inserted into the end of the adjacent simple-supported C-shaped purlin, and the embedded thin-walled L-shaped steel is glued to the adjacent simply-supported purlin, and the support is connected to the purlin support bolt.

The beneficial effect of the present invention is that by embedding thin-walled L-shaped steel into the existing simply supported C-shaped purlins, using self-tapping screws or glued joints to make them continuous purlins, thereby significantly improving the bearing capacity of C-shaped purlins, the reinforcement method The structure is simple and the cost is low.

Description of drawings

Fig. 1 is a schematic front view of a strengthening scheme of the present invention.

Fig. 2 is a sectional view of reinforcement scheme 1-1 of the present invention.

Fig. 3 is a sectional view of reinforcement scheme 1 2-2 of the present invention.

Fig. 4 is a schematic front view of the reinforcement scheme 2 of the present invention.

Fig. 5 is a sectional view of reinforcement scheme 2 1-1 of the present invention.

Fig. 6 is a sectional view of reinforcement scheme 2 2-2 of the present invention.

Detailed ways

Embodiment one

As shown in Figure 1, Figure 2, and Figure 3, bolt holes are drilled on two thin-walled L-shaped steels (2) corresponding to the bolt holes on the simply supported C-shaped purlins (1) in advance, and the hole diameter is 0.3~ larger than the bolt diameter. 0.5mm; remove the bolts (3) connecting the purlin support (4) to the ends of simply supported C-shaped purlins (1), and attach two thin-walled L-shaped steels (2) to adjacent two simply supported C-shaped purlins ( 1), the upper bolt holes of the thin-walled L-shaped steel (2) are aligned with the bolt holes at the end of the simply supported C-shaped purlin (1) and the upper bolt holes of the purlin support (4), and connected with bolts (3); the simply supported C-shaped purlin ( 1) The web and the thin-walled L-shaped steel (2) are fastened and connected by self-tapping screws (5), or at the same time, the upper and lower flanges of the simply supported C-shaped purlin (1) and the thin-walled L-shaped steel (2) wing Edges are fastened and connected with self-tapping screws (5).

Embodiment two

As shown in Figure 4, Figure 5, and Figure 6, bolt holes are drilled on two thin-walled L-shaped steels (2) corresponding to the bolt holes on the simply supported C-shaped purlins (1) in advance, and the hole diameter is 0.3~ larger than the bolt diameter. 0.5mm; remove the bolts (3) connecting the purlin support (4) to the ends of two adjacent simply supported C-shaped purlins (1), and the simply supported C Structural adhesive layer (5) is applied to the ends of the shaped purlins (1); two thin-walled L-shaped steels (2) are attached to two adjacent simple-supported C-shaped purlins (1), and the bolt holes on the thin-walled L-shaped steels (2) are aligned with the The bolt holes at the ends of simply supported C-shaped purlins (1) are aligned with the bolt holes on the purlin support (4), and connected with bolts (3); the embedded thin-walled L-shaped steel (2) is connected with two adjacent simply supported C-shaped purlins (1 ) within the overlapping range to achieve adhesive connection.

Claims (4)

1. A continuous reinforcement method for existing simply supported C-shaped purlins, characterized in that: thin-walled L-shaped steel is embedded in the ends of two adjacent simply supported C-shaped purlins, so that they are connected with simply supported C-shaped purlins to form a continuous beam member . 2. A continuous reinforcement method for existing simply supported C-shaped purlins according to claim 1, characterized in that: the embedded thin-walled L-shaped purlins are drilled at the corresponding positions of the supporting purlin bolt holes, and The original bolts are used to connect with simply supported purlins and purlin brackets. 3. A continuous reinforcement method for existing simply supported C-shaped purlins according to claim 1, characterized in that: in the range outside the simple supported purlin purlin support, simply supported C-shaped purlins and embedded thin-walled L-shaped purlins The web is connected by self-tapping screws, or the upper and lower flanges are also connected by self-tapping screws. 4. A continuous reinforcement method for existing simply supported C-shaped purlins according to claim 1, characterized in that: outside the range of simply supported purlin purlin support, simply supported C-shaped purlins and embedded thin-walled L-shaped purlins The web is connected by structural adhesive, or the upper and lower flanges are also connected by structural adhesive.