Novel steel structure fireproof plate installation and construction method

Abstract

The invention provides a novel steel structure fireproof plate installation construction method, and belongs to the technical field of building construction.The novel steel structure fireproof plate installation construction method comprises the steps that an ALC fireproof plate is selected, the ALC fireproof plate is made of fly ash and the like, has the advantages of being non-combustible and meets the fireproof requirement, a keel-free fixing technology is adopted, and bolts are used for fixing; the installation steps comprise deepening design, plate processing and the like, the joint and anti-cracking technology is adopted, joint treatment and anti-cracking are achieved through joint sealer filling, gridding cloth pasting and the like, the ALC fireproof plate is prefabricated in a factory, the size is standard, the quality is reliable, the defects of traditional fireproof measures are overcome, the fireproof performance is improved, the construction cost is reduced, and the construction period is shortened. And the construction quality and safety are improved, and good application prospects are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a novel steel structure fireproof board installation construction method. Background Art

[0002] In steel structure buildings, fire prevention is a vital safety requirement. Traditional fire prevention measures for steel structures mainly include the use of fire retardant coatings and the installation method of combining keels with fireproof panels. However, these traditional methods have some shortcomings. The fireproof performance of fire retardant coatings may gradually decline with time and environmental factors, and regular maintenance and re-painting are required, which increases costs and maintenance workload. The installation method of combining keels with fireproof panels is relatively complicated, requiring a large amount of keel materials and installation procedures, which not only increases construction costs, but also prolongs the construction period.

[0003] Therefore, a new steel structure fireproof panel installation construction method is needed to overcome these problems, improve the fire resistance of steel structures, reduce construction costs, shorten construction periods, and improve construction quality and safety. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of steel structure fireproof board installation construction method, aiming to solve the problems in the prior art: first, the fireproof performance is unstable and the maintenance cost is high. The fireproof performance of traditional fire-retardant coatings decreases with time and environmental factors, and regular maintenance and re-painting are required, which increases costs and workload; second, the construction is complicated, the cost is high, and the cycle is long. The installation method of the keel combined with the fireproof board is complicated, requiring a large amount of keel materials and installation procedures, which leads to increased construction costs and extended construction cycles.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A novel steel structure fireproof board installation construction method comprises the following steps:

[0007] Selection of fireproof board materials: Choose porous concrete formed boards made of fly ash (or silica sand), cement, lime, etc. as the main raw materials, reinforced with treated steel bars, and cured with high-pressure steam as fireproof boards (ALC fireproof boards). The ALC fireproof boards are non-flammable, non-toxic, durable, light, and neat in appearance. Their physical and mechanical properties and fire resistance limit meet the fire protection requirements of steel structures.

[0008] Keelless fixation technology:

[0009] Fixing method: bolts are used as the main load-bearing components to fix the ALC fireproof board to the steel structure;

[0010] Installation steps: including in-depth design, plate processing, screw welding, fireproof board hole drilling, plate installation and fixing, joint treatment and repair; among which in-depth design is to carry out detailed design of fireproof board installation according to the actual size and design requirements of the steel structure, determine the position and number of bolts, etc.; plate processing is to carry out necessary processing on ALC fireproof board, such as cutting and drilling, to meet installation requirements; screw welding is to weld screws on the steel structure as the connection basis of bolts; fireproof board hole drilling is to drill holes on the fireproof board at the corresponding screw positions; plate installation and fixing is to install the fireproof board on the steel structure by bolts to ensure firmness and reliability; joint treatment and repair is to treat the joints between fireproof boards, including filling fireproof grout and pasting fireproof mortar internal pressure alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints, and at the same time repair the defects that occur during the installation process;

[0011] Seams and anti-crack technology:

[0012] Joint treatment: Fill the joints between ALC fireproof boards with fireproof grout and paste fireproof mortar and alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints;

[0013] Anti-cracking measures: By processing anti-cracking grooves, pasting mesh cloth, etc., cracks in the board caused by thermal expansion and contraction can be effectively prevented.

[0014] As a preferred solution of the present invention, the ALC fireproof board is prefabricated in a factory, has standard dimensions and specifications, and has stable and reliable quality.

[0015] As a preferred solution of the present invention, in the installation steps of the keel-free fixing technology, before the screw welding, the steps of cleaning and treating the surface of the steel structure are also included to ensure the firmness of the screw welding.

[0016] As a preferred solution of the present invention, in the joint treatment step of the joint and anti-cracking technology, the performance of the fire-proof grout and the fire-proof mortar internal pressure alkali-resistant fiber mesh cloth meets the requirements of relevant fire protection and durability standards.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this scheme, fly ash (or silica sand), cement, lime and other materials are used as main raw materials, and porous concrete formed plates are reinforced with treated steel bars and cured with high-pressure steam as fireproof boards (ALC fireproof boards). This type of fireproof board has the characteristics of being non-flammable, non-toxic, durable, light in weight and neat in appearance. Its physical and mechanical properties and fire resistance limit meet the fire protection requirements of steel structures. Through reasonable installation and construction methods, it can significantly improve the fire resistance limit and overall fire resistance of steel structures, and avoid the fire hazards caused by the performance degradation of traditional fire-retardant coatings.

[0019] 2. In this solution, the keel-free construction saves a lot of keel materials and reduces the material procurement cost. At the same time, the production cost of ALC fireproof board is relatively low, and it has good durability, which reduces the later maintenance cost. For example, the ALC fireproof board prefabricated in the factory has stable and reliable quality, which reduces the material waste and replacement cost caused by quality problems. The keel-free construction simplifies the construction process and reduces the waiting time between construction steps and processes. During the installation process, if bolts are used as the main load-bearing components to fix the fireproof board, the operation is relatively simple and direct, which reduces the complexity and workload of manual operation, thereby reducing labor costs.

[0020] 3. In this scheme, the keel-free construction simplifies the construction process and reduces the waiting time between construction steps and processes. For example, when installing ALC fireproof panels, the complicated process of keel installation is omitted, and the fireproof panels are directly installed and fixed. At the same time, ALC fireproof panels are easy to install and splice, which greatly shortens the overall construction period and improves construction efficiency. It helps to speed up the project progress and realize project benefits in advance. Through strict installation steps and quality control measures, such as reasonable bolt fixing and joint treatment, it is ensured that the fireproof panels can be firmly and reliably fixed on the steel structure. For example, in the process of bolt fixing, the position and number of bolts are determined through in-depth design to ensure that the fireproof panels are evenly stressed; when treating the joints, fill the fireproof grout and paste the fireproof mortar with internal pressure and alkali-resistant fiber mesh cloth to enhance the joint strength and durability, thereby improving the construction quality. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] The present invention provides the following technical solutions:

[0024] A novel steel structure fireproof board installation construction method comprises the following steps:

[0025] Selection of fireproof board materials: Choose porous concrete formed boards made of fly ash (or silica sand), cement, lime, etc. as the main raw materials, reinforced with treated steel bars, and cured with high-pressure steam as fireproof boards (ALC fireproof boards). The ALC fireproof boards are non-flammable, non-toxic, durable, light, and neat in appearance. Their physical and mechanical properties and fire resistance limit meet the fire protection requirements of steel structures.

[0026] Keelless fixation technology:

[0027] Fixing method: bolts are used as the main load-bearing components to fix the ALC fireproof board to the steel structure;

[0028] Installation steps: including in-depth design, plate processing, screw welding, fireproof board hole drilling, plate installation and fixing, joint treatment and repair; among which in-depth design is to carry out detailed design of fireproof board installation according to the actual size and design requirements of the steel structure, determine the position and number of bolts, etc.; plate processing is to carry out necessary processing on ALC fireproof board, such as cutting and drilling, to meet installation requirements; screw welding is to weld screws on the steel structure as the connection basis of bolts; fireproof board hole drilling is to drill holes on the fireproof board at the corresponding screw positions; plate installation and fixing is to install the fireproof board on the steel structure by bolts to ensure firmness and reliability; joint treatment and repair is to treat the joints between fireproof boards, including filling fireproof grout and pasting fireproof mortar internal pressure alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints, and at the same time repair the defects that occur during the installation process;

[0029] Seams and anti-crack technology:

[0030] Joint treatment: Fill the joints between ALC fireproof boards with fireproof grout and paste fireproof mortar and alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints;

[0031] Anti-cracking measures: By processing anti-cracking grooves, pasting mesh cloth, etc., cracks in the board caused by thermal expansion and contraction can be effectively prevented.

[0032] In a specific embodiment of the present invention, the fireproof board material is selected from:

[0033] Raw materials and features: ALC fireproof board uses fly ash (or silica sand), cement, lime, etc. as the main raw materials, and contains treated steel reinforcement. This unique combination of raw materials gives the fireproof board a series of excellent characteristics. For example, the multi-porous structure formed by high-pressure steam curing not only makes the board light and easy to install, but also gives it good physical and mechanical properties. The non-combustible and non-toxic characteristics give it a natural advantage in steel structure fire protection applications, which can effectively ensure the safety of the building in the event of a fire, and also meet the requirements of environmental protection and health. Good durability means that during long-term use, the fireproof board can maintain its stable performance, reducing the cost of later maintenance and replacement. The neat appearance also gives it certain advantages in architectural decoration, which can enhance the overall aesthetics of the building.

[0034] Performance requirements: Its physical and mechanical properties and fire resistance are the key to meeting the fire protection requirements of steel structures. In terms of physical and mechanical properties, it may include indicators such as compressive strength and flexural strength. These indicators need to be strictly tested and verified to ensure that the fireproof board can withstand various external forces without damage in actual use. The fire resistance is an indicator that measures the time that the fireproof board can effectively prevent the spread of fire in a fire environment, and must comply with relevant building fire protection standards.

[0035] Keelless fixation technology:

[0036] Fixing principle: bolts are used as the main load-bearing components for fixing, which abandons the traditional keel structure. Bolt connection has high reliability and stability, and can firmly fix the fireproof board on the steel structure. Compared with the keel fixing method, bolt fixing is more direct and simple, reducing the intermediate connection structure, thereby reducing the risk of fireproof board falling off due to improper keel installation or damage.

[0037] Detailed analysis of the installation steps:

[0038] Deepening the design: This is an important preliminary planning step for the entire installation process. The installation of the fireproof panels is planned in detail according to the actual size and design requirements of the steel structure. For example, the location and number of bolts need to be accurately determined, which not only takes into account the size and weight distribution of the fireproof panels themselves, but also the bearing capacity and stress characteristics of the steel structure. Reasonable bolt layout can ensure that the force of the fireproof panels on the steel structure is uniform, improving the stability and safety of the overall installation.

[0039] Plate processing: Cutting, drilling and other processing operations are performed on the ALC fireproof board to make it better adapt to the shape and installation requirements of the steel structure. The cutting operation can adjust the fireproof board to the appropriate size to meet the installation requirements of different parts; drilling is to correspond to the position of the screw welding on the steel structure to ensure that the subsequent bolts can accurately pass through the fireproof board for fixing.

[0040] Screw welding: Welding screws on steel structures is the basis for bolt connections. The welding process needs to ensure the verticality and welding quality of the screws to ensure that the bolts can be smoothly connected to the fireproof board and can withstand the weight and external force of the fireproof board. At the same time, the accuracy of the welding position is also crucial, which directly affects the installation accuracy and overall stability of the fireproof board.

[0041] Hole drilling in fireproof board: The operation of drilling holes in the fireproof board corresponding to the screw position must be accurate. The size and position of the hole must match the screw completely, otherwise it will affect the installation and fixing effect of the bolt. The accuracy of the hole drilling is not only related to the firmness of the installation of the fireproof board, but also may affect the overall performance of the fireproof board, such as stress concentration around the hole. If not handled properly, it may cause cracks or damage to the fireproof board during use.

[0042] Installation and fixing of panels: The core step is to install the fireproof panels on the steel structure with bolts. During the installation process, ensure that the bolts are tightened to a moderate degree. They should not be too loose to cause the fireproof panels to loosen, nor too tight to damage the fireproof panels or the steel structure. At the same time, pay attention to check the fit between the fireproof panels and the steel structure to ensure that the two are in close contact to ensure that the fireproof panels can effectively exert their fireproof properties.

[0043] Joint treatment and repair: Treating the joints between fireproof boards is the key to improving the overall fireproof performance and aesthetics. Filling the joints with fireproof grout can fill the gaps in the joints to prevent the fire from spreading through the joints; pasting the fireproof mortar with internal pressure and alkali-resistant fiber mesh cloth further enhances the strength and durability of the joints. During the installation process, if the fireproof board is found to have defects, such as surface scratches, damaged corners, etc., it needs to be repaired in time to ensure the integrity and performance of the fireproof board.

[0044] Seams and anti-crack technology:

[0045] Joint treatment mechanism: Fireproof grout is filled in the joints between ALC fireproof boards, and fiber mesh cloth with alkali resistance and internal pressure of fireproof mortar is pasted. Fireproof grout can fill the tiny gaps in the joints, play a role of sealing and fireproofing; fireproof mortar with alkali resistance and internal pressure of fireproof mortar can enhance the overall strength of the joints, prevent cracking or damage in the joints under fire or other external forces, thereby ensuring the integrity and fireproof performance of the fireproof board.

[0046] Principle of anti-crack measures: Prevent cracks in the board due to thermal expansion and contraction by processing anti-crack grooves and pasting mesh cloth. Processing anti-crack grooves can provide a certain space for the board to expand and contract when the temperature changes, reducing the accumulation of internal stress; pasting mesh cloth can form a reinforcement layer on the surface of the board, limiting the expansion of cracks and improving the board's crack resistance. The comprehensive application of these measures can effectively extend the service life of the fireproof board and improve its stability and reliability under various environmental conditions.

[0047] Specifically in this solution, the ALC fireproof board is prefabricated in a factory, has standard dimensions and specifications, and has stable and reliable quality.

[0048] In this embodiment: ALC fireproof board is prefabricated in the factory according to the standardized production process. The factory has professional production equipment and process control conditions, which can ensure that the size specifications of the fireproof board meet the precise standard requirements. For example, there are strict tolerance control ranges for the dimensional parameters such as the length, width and thickness of the fireproof board, which ensures that each prefabricated fireproof board has a high degree of consistency. This standardized size specification makes the installation of the fireproof board at the construction site more convenient and efficient, and can be better matched and installed with the steel structure, reducing the workload of on-site processing and adjustment. At the same time, the quality monitoring system in the factory prefabrication process can ensure that the quality of the fireproof board is stable and reliable. From the selection of raw materials to each link in the production process, strict quality inspections are carried out to ensure that the fireproof board has good physical and mechanical properties, fire resistance and other related performance indicators to meet the requirements of steel structure fire protection.

[0049] Specifically in this solution, in the installation steps of the keelless fixing technology, before the screw welding, it also includes the steps of cleaning and treating the surface of the steel structure to ensure the firmness of the screw welding.

[0050] In this embodiment: Before the screw welding, the surface of the steel structure is thoroughly cleaned and treated. First, use professional cleaning tools and cleaning agents to remove impurities such as oil, rust, dust, etc. on the surface of the steel structure. These impurities will affect the quality of screw welding and cause the welding to be unstable. For example, oil stains will produce pores during welding and reduce the welding strength; rust will affect the formation of the welding pool and deteriorate the quality of the welded joint. After the cleaning is completed, the surface of the steel structure is polished to make its surface smoother and smoother, increase the contact area between the screw and the surface of the steel structure, and further improve the firmness of the welding. At the same time, according to the material and actual situation of the steel structure, some special surface treatment methods may be used, such as spraying anti-rust paint, etc., to prevent the steel structure from rusting during subsequent use and ensure the durability and safety of the entire structure.

[0051] Specifically in this solution, in the joint treatment step of the joint and anti-cracking technology, the performance of the fire-proof grout and the fire-proof mortar internal pressure alkali-resistant fiber mesh cloth meets the relevant fire protection and durability standard requirements.

[0052] In the present embodiment: in the joint treatment step of the joint and crack prevention technology, the performance of the fireproof grout and the alkali-resistant fiber mesh cloth in the fireproof mortar strictly meets the requirements of the relevant fireproof and durability standards. For the fireproof grout, it has good fireproof performance, can remain stable in a high temperature environment, does not burn or decompose, and effectively prevents the fire from spreading through the joint. At the same time, it also has suitable viscosity and filling performance, which can fully fill the joint gap to form a tight sealing structure. The fireproof performance of the alkali-resistant fiber mesh cloth in the fireproof mortar also meets the standards, can maintain its structural integrity in a fire, and play a role in enhancing the strength of the joint. Its alkali resistance ensures that it will not be damaged by chemical reaction with the alkaline components in the fireproof mortar during long-term use. The strength and toughness of the fiber mesh cloth can effectively resist the stress generated by factors such as temperature changes and external forces at the joint, prevent cracking or damage in the joint, thereby ensuring the overall fireproof performance and durability of the fireproof board.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of steel structure fireproof board installation construction method, characterized in that: The following steps are involved: Selection of fireproof board materials: Choose porous concrete formed boards made of fly ash (or silica sand), cement, lime, etc. as the main raw materials, reinforced with treated steel bars, and cured with high-pressure steam as fireproof boards (ALC fireproof boards). The ALC fireproof boards are non-flammable, non-toxic, durable, light, and neat in appearance. Their physical and mechanical properties and fire resistance limit meet the fire protection requirements of steel structures. Keelless fixation technology: Fixing method: bolts are used as the main load-bearing components to fix the ALC fireproof board to the steel structure; Installation steps: including in-depth design, plate processing, screw welding, fireproof board hole drilling, plate installation and fixing, joint treatment and repair; among which in-depth design is to carry out detailed design of fireproof board installation according to the actual size and design requirements of the steel structure, determine the position and number of bolts, etc.; plate processing is to carry out necessary processing on ALC fireproof board, such as cutting and drilling, to meet installation requirements; screw welding is to weld screws on the steel structure as the connection basis of bolts; fireproof board hole drilling is to drill holes on the fireproof board at the corresponding screw positions; plate installation and fixing is to install the fireproof board on the steel structure by bolts to ensure firmness and reliability; joint treatment and repair is to treat the joints between fireproof boards, including filling fireproof grout and pasting fireproof mortar internal pressure alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints, and at the same time repair the defects that occur during the installation process; Seams and anti-crack technology: Joint treatment: Fill the joints between ALC fireproof boards with fireproof grout and paste fireproof mortar and alkali-resistant fiber mesh cloth on the outside to enhance the strength and durability of the joints; Anti-cracking measures: By processing anti-cracking grooves, pasting mesh cloth, etc., cracks in the board caused by thermal expansion and contraction can be effectively prevented.

2. According to claim 1, a new type of steel structure fireproof board installation construction method is characterized by: The ALC fireproof board is prefabricated in the factory with standard size and specification and stable and reliable quality.

3. A new type of steel structure fireproof board installation construction method according to claim 2, characterized in that: In the installation steps of the keel-free fixing technology, before the screw welding, the steps of cleaning and processing the surface of the steel structure are also included to ensure the firmness of the screw welding.

4. A new type of steel structure fireproof board installation construction method according to claim 3, characterized in that: In the joint treatment step of the joint and crack prevention technology, the performance of the fire-proof grout and the fire-proof mortar internal pressure alkali-resistant fiber mesh cloth meets the requirements of relevant fire protection and durability standards.