Open-fire-free reinforcing structure for H-shaped steel section of steel structure

Abstract

The utility model relates to an open-fire-free reinforcing structure for an H-shaped steel section of a steel structure. The open-fire-free reinforcing structure comprises an original H-shaped steel component, H-shaped steel and high-strength bolts. Holes are correspondingly formed in a flange plate on one side of the original H-shaped steel component and a flange plate on one side of the H-shaped steel, and the original H-shaped steel component with the holes and the flange plate of the H-shaped steel are attached and fixed through high-strength bolts. The H-shaped steel component has the advantages that holes are formed in the original H-shaped steel component and the H-shaped steel attached flange plate in advance, when the section of the H-shaped steel is reinforced, the section of the component does not need to be enlarged in a welding mode, the high-strength bolt mechanical connection mode is adopted, unstable factors of manual welding are eliminated, and the possibility of open fire operation is eradicated.

Description

Technical Field

[0001] The utility model relates to the field of steel structure reinforcement, in particular to a steel structure H-shaped steel cross-section non-open flame reinforcement structure. Background Art

[0002] Steel structures have the advantages of high material strength, light weight, high structural reliability, and high degree of mechanization in manufacturing and installation. They are widely used in industrial buildings. With the changes of the times, the transformation and upgrading of various industries, the use functions of buildings are also changing at any time. The addition of distributed photovoltaic power stations on the roof and the adjustment or increase of internal hanging equipment will bring considerable challenges to the building structure. When the design load of the building structure does not meet the current use conditions, the main structure of the building needs to be reinforced.

[0003] At present, the reinforcement of steel structure sections is usually completed by welding. When there are flammable materials piled up inside the building or the equipment cannot be temporarily moved away, it will pose a severe challenge to fire prevention measures. In addition, the section reinforcement is mostly done by manual welding on site, which has high requirements on the operators and the environment. Therefore, a section reinforcement method without open flame operation is needed to solve the above technical problems. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a steel structure H-shaped steel cross-section non-open flame reinforcement structure.

[0005] This steel structure H-shaped steel section has a flame-free reinforcement structure, including: original H-shaped steel components, H-shaped steel and high-strength bolts; holes are opened in the flange plate on one side of the original H-shaped steel component and the flange plate on one side of the H-shaped steel, and the original H-shaped steel component with holes and the flange plate of the H-shaped steel are fitted and fixed by high-strength bolts.

[0006] Preferably, the original H-shaped steel member and the flange plate of the H-shaped steel have the same width, and the original H-shaped steel member and the flange plate of the H-shaped steel are aligned and fitted.

[0007] Preferably, the distance from the center of the hole to the edge of the edge plate is greater than or equal to twice the hole diameter, and the distance between the centers of adjacent holes is greater than or equal to three times the hole diameter.

[0008] Preferably, the high-strength bolts penetrate the original H-shaped steel member and the flange plate of the H-shaped steel and are fixed by nuts, and a flat washer is installed at the bottom of the nut.

[0009] Preferably, the friction coefficients of the nut and the flat washer are consistent.

[0010] The beneficial effects of the utility model are:

[0011] By pre-drilling holes in the original H-steel components and the H-steel flange plates, when reinforcing the H-steel cross-section, there is no need to increase the cross-section of the component by welding. Instead, mechanical connection with high-strength bolts is used, eliminating the unstable factors of manual welding and the possibility of open flame operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the H-shaped steel section reinforcement structure without open flames;

[0013] Figure 2 It is a side view schematic diagram of the H-shaped steel section without open flame reinforcement structure of the steel structure;

[0014] Figure 3 It is a cross-sectional schematic diagram of the H-shaped steel section of the steel structure without open flame reinforcement structure.

[0015] Description of the accompanying drawings: original H-shaped steel component 1, H-shaped steel 2, high-strength bolt 3, flat washer 4, nut 5. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0017] As an example, Figures 1 to 3 As shown, this steel structure H-shaped steel section has no open flame reinforcement structure, including: original H-shaped steel component 1, H-shaped steel 2 and high-strength bolts 3.

[0018] The flange plates of the original H-shaped steel member 1 and the H-shaped steel 2 have the same width. The flange plates on one side of the original H-shaped steel member 1 and the flange plates on one side of the H-shaped steel 2 have corresponding holes. The holes are symmetrically opened on both sides of the flange plates. The distance from the center of the hole to the edge of the flange plate is greater than or equal to 2 times the bolt hole diameter, and the distance between the centers of adjacent holes is greater than or equal to 3 times the hole diameter.

[0019] The flange plates of the original H-shaped steel member 1 and the H-shaped steel 2 with holes are aligned and fitted, and the high-strength bolts 3 penetrate the flange plates of the original H-shaped steel member 1 and the H-shaped steel 2 and are fixed by nuts 5, and a flat washer 4 is installed at the bottom of the nut 5.

[0020] The friction coefficients of the nut 5 and the flat washer 4 are consistent.

[0021] During construction, before positioning and opening holes on one side flange of the original H-beam member 1 and one side flange of the H-beam 2, it is necessary to clean the dust and impurities on the surface of the flange of the original H-beam member 1 and the H-beam 2 on the side where the holes are to be opened. Only after cleaning can the flange of the opening side of the original H-beam member 1 and the flange of the opening side of the H-beam 2 be marked and positioned;

[0022] The drilling method is manual drilling, and a magnetic drill is used to avoid sparks when drilling holes on the flange of the original H-shaped steel structure 1 and the flange of H-shaped steel 2; after drilling, the hole size needs to be reviewed, the inner wall of the hole needs to be trimmed, and the surface of the flange on the opening side of the original H-shaped steel component 1 and the flange on the opening side of H-shaped steel 2 needs to be polished.

[0023] After the drilling process is completed, install the high-strength bolt 3, and install the flat washer 4 at the bolt head and nut 5 of the high-strength bolt 3. The high-strength bolt 3, flat washer 4 and nut 5 must be provided by the same manufacturer. The nut 5 and the flat washer 4 are processed accordingly to ensure that the friction coefficient between the nut 5 and the flat washer 4 remains consistent. The torque of the high-strength bolt 3 must meet the relevant specifications.

Claims

1. A steel structure H-shaped steel cross-section non-open flame reinforcement structure, characterized in that: include: Original H-beam components, H-beams and high-strength bolts; Holes are opened in the flange plate on one side of the original H-shaped steel member and in correspondence with the flange plate on one side of the H-shaped steel. The original H-shaped steel member with the holes and the flange plate of the H-shaped steel are fitted together and fixed by high-strength bolts.

2. The steel structure H-shaped steel cross-section flame-free reinforcement structure according to claim 1 is characterized in that: The original H-shaped steel member and the flange plate of the H-shaped steel have the same width, and the flange plates of the original H-shaped steel member and the H-shaped steel are aligned and fitted.

3. The steel structure H-shaped steel cross-section flame-free reinforcement structure according to claim 1 is characterized in that: The distance from the center of the hole to the edge of the edge plate is greater than or equal to twice the hole diameter, and the distance between the centers of adjacent holes is greater than or equal to three times the hole diameter.

4. The steel structure H-shaped steel cross-section flame-free reinforcement structure according to claim 1, characterized in that: The high-strength bolts penetrate the original H-shaped steel member and the flange plate of the H-shaped steel and are fixed by nuts, and a flat washer is installed at the bottom of the nut.

5. The steel structure H-shaped steel cross-section flame-free reinforcement structure according to claim 4 is characterized in that: The friction coefficients of the nut and the flat washer are the same.

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