Method for increasing section of C-shaped purline

Abstract

The invention provides a method for increasing the section of a C-shaped purline. The method is used for reinforcing the C-shaped simply-supported purline (1) to be reinforced, and comprises the following steps: step 1, polishing the C-shaped simply-supported purline (1) to be reinforced, and reinforcing the C-shaped simply-supported purline (2); 2, the reinforced C-shaped simply-supported purline (2) is placed on the back face of the C-shaped simply-supported purline (1) to be reinforced, and a mounting hole is drilled; and 3, the back face of the to-be-reinforced C-shaped simply-supported purline (1) and the back face of the reinforced C-shaped simply-supported purline (2) are smeared with sticky steel glue (7), the to-be-reinforced C-shaped simply-supported purline (1) and the reinforced C-shaped simply-supported purline (2) are placed between the two adjacent purline supporting plates (4) and aligned with the installation holes, core-pulling rivets (3) penetrate through the installation holes to install the reinforced C-shaped simply-supported purline (2) on the to-be-reinforced C-shaped simply-supported purline (1), and fixing and tying are completed. The method does not need a dismounting process, reduces normal production in a plant to the maximum extent, and does not need large installation equipment; according to the invention, the existing structure is further reinforced, and indoor operation is not influenced by weather; the method is easy to operate, convenient to replace, short in construction period, safe and reliable.

Description

Technical Field

[0001] The invention relates to the field of construction industry, and in particular to a method for increasing the cross-section of a C-shaped purlin. Background Art

[0002] At present, there are more and more projects to add photovoltaic panels to the roofs of steel structure factories, which poses a challenge to the bearing capacity of C-type simply supported purlins. When the weight carried exceeds the bearing capacity of C-type simply supported purlins, the conventional solution is to directly remove the roof panels to replace the simply supported purlins, and then re-lay the roof panels and photovoltaic panels. This is a lot of work and the cost is high. In addition, this method takes a long time to complete, and will cause the existing roof panels to be unusable after removal or cause water leakage. Based on the above situation, there is an urgent need for a method to increase the bearing capacity of C-type simply supported purlins by increasing the load-bearing cross-section of the purlins without removing them. Summary of the invention

[0003] The purpose of the present invention is to provide a method for increasing the cross section of a C-shaped purlin.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention relates to a method for increasing the cross-section of a C-shaped purlin, and the method comprises the following steps:

[0006] Step 1, grinding the back side of the C-shaped simply supported purlin 1 to be reinforced and strengthening the C-shaped simply supported purlin 2;

[0007] Step 2, placing the reinforced C-shaped simply supported purlin 2 on the back of the C-shaped simply supported purlin 1 to be reinforced, marking, and drilling installation holes for the reinforced C-shaped simply supported purlin 2;

[0008] Step 3, apply steel glue 7 on the back of the polished C-type simply supported purlin 1 to be reinforced and the back of the reinforced C-type simply supported purlin 2, place the reinforced C-type simply supported purlin 2 between two adjacent purlin support plates 4, and align it with the mounting hole, and use the core-pulling anchor 3 to pass through the mounting hole to install the reinforced C-type simply supported purlin 2 on the C-type simply supported purlin 1 to be reinforced, and complete the fixing and fastening.

[0009] Preferably, in step 1, the back side of the polished C-shaped simply-supported purlin to be reinforced 1 is matched and connected with the back side of the polished reinforced C-shaped simply-supported purlin 2.

[0010] Preferably, in step 2, the width of the reinforced C-shaped simply supported purlin 2 is smaller than the width of the C-shaped simply supported purlin 1 to be reinforced.

[0011] Preferably, in step 2, the two end faces of the reinforced C-shaped simply supported purlin 2 are spaced 20mm from the purlin support plate 4 close to it; the spacing of 20mm between each end face of the reinforced C-shaped simply supported purlin 2 involved in the present invention and the purlin support plate 4 close to one end thereof can not only meet the installation requirements; but also can meet the requirement of providing a reinforcement effect on the full-length bending bearing capacity of the C-shaped steel to be reinforced in terms of force; if the spacing of each end face of the reinforced C-shaped simply supported purlin 2 from the purlin support plate 4 close to one end thereof is less than 20mm, the length of the reinforced C-shaped simply supported purlin 2 itself is too long, which not only increases the weight of its own structure, but also increases the cost; if the spacing of each end face of the reinforced C-shaped simply supported purlin 2 from the purlin support plate 4 close to one end thereof is greater than 20mm, the length of the reinforced C-shaped simply supported purlin 2 itself is too short, and because the supporting area is small, it cannot meet the purpose of providing a reinforcement effect on the full-length bending bearing capacity of the C-shaped steel to be reinforced in terms of force.

[0012] Preferably, in step 2, the spacings between the mounting holes on the reinforced C-shaped simply supported purlins 2 are equal.

[0013] More preferably, the mounting holes on the reinforced C-shaped simply supported purlin 2 are arranged in two rows, the number of holes in each row is equal, and the hole spacing is equal.

[0014] The present invention has the following advantages:

[0015] (1) The method of increasing the cross-section of a C-shaped purlin according to the present invention does not require a dismantling process, minimizes normal production in the factory, and does not require large-scale installation equipment.

[0016] (2) The method of increasing the cross-section of a C-shaped purlin involved in the present invention is to further reinforce the existing structure, which can be completed and only requires indoor operation without being affected by weather.

[0017] (3) The method of increasing the cross-section of a C-shaped purlin involved in the present invention is simple to operate, convenient to replace, short in construction period, and safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the existing C-type simply supported purlin to be reinforced;

[0019] Figure 2 This is a structural diagram after the installation holes are drilled according to the method of the present invention;

[0020] Figure 3 This is a structural diagram after the reinforced C-shaped simply supported purlin is installed according to the method of the present invention;

[0021] Figure 4 It is a cross-sectional schematic diagram after the installation of the method of the present invention is completed;

[0022] The attached figure is marked with: 1-C-type simply supported purlin to be reinforced, 2-reinforced C-type simply supported purlin, 3-core-pulling anchor nails, 4-purlin support plate, 5-roof steel beam, 6-purlin fixing bolts, 7-steel glue. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with specific embodiments. It should be noted that the following embodiments are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0024] Example

[0025] This embodiment relates to a method of increasing the cross-section of a C-shaped purlin, and reinforces an existing C-shaped simply supported purlin 1 structure to be reinforced, wherein the existing structure is shown in FIG. Figure 1 As shown, it includes: a C-shaped simply supported purlin 1 to be reinforced, a roof steel beam 5, a purlin support plate 4, and a purlin fixing bolt 6; the C-shaped simply supported purlin 1 is fixed on the roof steel beam 5 through the purlin support plate 6 and the purlin fixing bolt 7;

[0026] The reinforcement method of this embodiment is shown in Figure 2-Figure 4 As shown, the following steps are included:

[0027] The reinforcement of the C-type simply supported purlin 1 to be reinforced includes the following steps:

[0028] Step 1, grinding the back side of the C-shaped simply supported purlin 1 to be reinforced and strengthening the C-shaped simply supported purlin 2; the grinded back side of the C-shaped simply supported purlin 1 to be reinforced and the grinded back side of the strengthened C-shaped simply supported purlin 2 are matched and connected;

[0029] Step 2, placing the reinforced C-shaped simply supported purlin 2 on the back of the C-shaped simply supported purlin 1 to be reinforced, marking, and drilling mounting holes for the reinforced C-shaped simply supported purlin 2, with equal spacing between the mounting holes; the width of the reinforced C-shaped simply supported purlin 2 is smaller than the width of the C-shaped simply supported purlin 1 to be reinforced; the distance between the two end surfaces of the reinforced C-shaped simply supported purlin 2 and the purlin support plate 4 close to it is 20 mm;

[0030] Step 3, apply steel glue 7 on the back of the polished C-type simply supported purlin 1 to be reinforced and the back of the reinforced C-type simply supported purlin 2, place the reinforced C-type simply supported purlin 2 between two adjacent purlin support plates 4, and align it with the mounting hole, and use the core-pulling anchor 3 to pass through the mounting hole to install the reinforced C-type simply supported purlin 2 on the C-type simply supported purlin 1 to be reinforced, and complete the fixing and fastening.

[0031] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which will not affect the essence of the present invention.

Claims

1. A method for increasing the cross-section of a C-shaped purlin, characterized in that: Strengthening the C-type simply supported purlin (1) to be strengthened includes the following steps: Step 1, grinding the back side of the C-shaped simply supported purlin (1) to be reinforced and strengthening the C-shaped simply supported purlin (2); Step 2, placing the reinforced C-shaped simply supported purlin (2) on the back of the C-shaped simply supported purlin (1) to be reinforced, marking, and drilling installation holes for the reinforced C-shaped simply supported purlin (2); Step 3, apply steel glue (7) on the back of the polished C-shaped simply supported purlin to be reinforced (1) and the back of the reinforced C-shaped simply supported purlin (2), place the reinforced C-shaped simply supported purlin (2) between two adjacent purlin support plates (4), align with the installation holes, and use the core-pulling anchor nails (3) to pass through the installation holes to install the reinforced C-shaped simply supported purlin (2) on the C-shaped simply supported purlin to be reinforced (1), thereby completing the fixing and fastening.

2. The method of increasing the cross-section of a C-shaped purlin as claimed in claim 1, characterized in that: In step 1, the back side of the polished C-shaped simply supported purlin to be reinforced (1) is matched and connected with the back side of the polished reinforced C-shaped simply supported purlin (2).

3. The method of increasing the cross-section of a C-shaped purlin as claimed in claim 1, characterized in that: In step 2, the width of the reinforced C-shaped simply supported purlin (2) is smaller than the width of the C-shaped simply supported purlin (1) to be reinforced.

4. The method of increasing the cross-section of a C-shaped purlin as claimed in claim 1, characterized in that: In step 2, the distance between the two end surfaces of the reinforced C-shaped simply supported purlin (2) and the purlin support plate (4) is 20 mm.

5. The method of increasing the cross-section of a C-shaped purlin as claimed in claim 1, characterized in that: In step 2, the spacing between the installation holes on the reinforced C-shaped simply supported purlin (2) is equal.

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