CN201386399Y - A high-strength and durable wooden I-beam - Google Patents

Abstract

The utility model provides a high-strength and durable wooden I-beam with high rigidity, light weight and high strength, convenient disassembly and assembly, easy cutting, high cost performance, strong durability, perennial turnover and industrial production, including flanges , web and end protection cover, the upper and lower surfaces and inside of the flange base plate in the flange are provided with flange modification treatment veneer, and the surface and inside of the web base plate in the web are provided with web modification treatment For the veneer, the modified flange and web modified veneers are dipped veneers, and the adhesive used is low molecular weight water-soluble phenolic resin or melamine-formaldehyde resin. The utility model is mainly used for the support in the building formwork system, and can also be used in the fields of building structure building roof load-bearing components and the like.

Description

A high-strength and durable wooden I-beam

technical field

The utility model relates to a wooden I-beam for building construction or building structure, which is mainly (but not exclusively) used in the fields of support in building formwork systems, load-bearing components of building structure floors and roofs, and the like.

Background technique

Building formwork is an important tool in the construction of concrete structures. In the current formwork operation process, the commonly used formwork systems include wood formwork, steel formwork and steel frame plywood formwork, etc., which generally have the disadvantages of easy deformation, large amount of engineering, high construction cost, and few turnover times. In the construction process of general concrete structures, the form work accounts for 20% to 30% of the cost of the concrete structure project, takes up 30% to 40% of the workload, and accounts for about 50% of the construction period. Therefore, it is very necessary to seek a new type of building formwork material and system.

At the same time, a large number of traditional building materials such as steel, cement, and clay bricks are used in my country's building structures, which consume a lot of natural resources and energy, and also cause pollution and damage to the environment. The growth process of wood is also beneficial to the environment. At the same time, the processing, use and disposal of wood will not cause serious pollution to the environment. Therefore, the use of wood in the field of construction is conducive to energy saving and emission reduction. It is a typical green building material, and the development of wood structures is also suitable. my country's energy-saving environmental protection and green building development strategy. However, for my country, which lacks natural forest resources and is rich in fast-growing forest resources, the most urgent task is how to select wood structure materials.

Engineered wood is a composite wood made of solid wood as the main raw material, using high-performance environmentally friendly adhesives, and using modern wood processing technology, which can make large use of small wood and excellent use of inferior wood. At present, such structural materials mainly include laminated lumber (Glulam), laminated veneer lumber (LVL), plywood (Plywood), oriented strand board (OSB), parallel strand glulam (PSL) and laminated strand glulam ( LSL) etc. Engineering wood also has the following advantages: it retains the excellent characteristics of solid wood sawn timber, and has the characteristics of uniform material, high allowable stress, small strength variation coefficient, good dimensional stability, moisture-proof, anti-corrosion, and flame-retardant; in addition, engineering wood partially replaces Large-diameter high-quality logs protect the ecological environment and reduce economic and social costs.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a wooden structure with high rigidity, light weight, high strength, convenient assembly and disassembly, easy cutting, high cost performance, strong durability, perennial turnover, and industrialized large-scale production. I-beam.

The technical scheme of the utility model is: a high-strength and durable wooden I-beam, including a flange, a web and an end protection cover, and the upper and lower surfaces and interior of the flange base plate in the flange are provided with modified flanges. Process the veneer, the surface and the interior of the web base plate in the web are provided with a web modification treatment veneer, the flange modification treatment veneer and the web modification treatment veneer are dipping treatment veneers, and the adhesive used Choose low molecular weight water-soluble phenolic resin or melamine-formaldehyde resin.

The flange can mainly adopt finger-jointed wood, laminated veneer lumber, parallel wood veneer or laminated wood veneer; Uniform and symmetrical arrangement within the cross-section.

The web can mainly be plywood, oriented strand board, three-layer structural board, laminated veneer lumber or solid wood board; Internally uniform and symmetrical.

The raw materials used for the flange and the web are mainly fast-growing wood, such as fast-growing poplar, Chinese fir, masson pine, radiata pine, birch, meranti, eucalyptus and the like.

The web and the flange can be connected by tenon and tenon, and the number of tooth tips in the web can be 1, 2 or 3.

The end protective cover can be made of anti-collision plastic, composite material or metal.

The flange modified veneer and the web modified veneer can be one or more layers to improve their strength, corrosion resistance, flame retardancy and deformation resistance; for finger joint flanges or three layers The face plate of the structural plate web can also be treated with anti-corrosion, flame retardant, toughening and strengthening.

The direction along the grain of the veneer modified by the flange is consistent with the length direction of the I-beam; the direction along the grain of the veneer modified by the web can be consistent with the length direction of the I-beam. It can also be vertically staggered; the modified veneer and its substrate can be formed at one time.

The cross-sections of the flanges and the webs all maintain symmetrical configurations.

The modification treatment method adopted for the flange modified veneer and the web modified veneer can not only dip the veneer, but also use preservatives, flame retardants, etc. to treat the veneer at the same time or separately. Perform functional processing.

The surface of the wooden I-beam, its surroundings and the cut holes are all painted with waterproof paint.

In the entire I-shaped structural member, the flange mainly bears the tensile pressure and provides the stiffness required to resist deformation. The web is mainly subjected to shear, and at the same time connects the two flanges into a whole. The modified rotary-cut veneer mainly has anti-corrosion properties. , Flame retardant, water resistance, acid and alkali resistance, anti-deformation, toughening and strengthening, etc. The entire I-beam can be reused all year round, the material is 100% reusable, 100% can be used as fuel, and is environmentally friendly.

The I-beam is mainly used for the support in the building formwork system, and can also be used in the fields of building structure, floor and roof load-bearing components.

The utility model adapts to the needs of national advanced formwork technology and construction technology, green building and energy saving and emission reduction, combining materials such as laminated veneer lumber (LVL), oriented strand board (OSB), structural plywood (Plywood) and modified wood veneer , its main uses are: 1) It can be used as a substitute for traditional building templates. The traditional formwork has disadvantages such as easy deformation, large amount of work, high construction cost, and few turnover times. However, this I-beam has high rigidity, light weight and high strength, convenient support and disassembly, easy cutting, high cost performance, strong durability, and can be turned over all year round. It has many advantages such as practicality and industrialized large-scale production, and can be popularized and utilized as a building formwork support. 2) It is used as a load-bearing component of the roof of the building structure, and it also has the performance of energy saving and environmental protection.

The beneficial effects of the utility model are: high rigidity, light weight and high strength, energy saving and environmental protection, convenient support and disassembly, easy cutting, high cost performance, strong durability, perennial turnover use, and industrialized large-scale production; it can be used in building formwork systems It can also be used in the fields of building structure, floor and roof load-bearing components, and can be used in common with foreign professional products.

Description of drawings

Fig. 1 is the structural representation of the utility model I-beam;

FIG. 2 is a cross-sectional view of FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

In the attached drawings, 1 is the flange, 2 is the web, 3 is the end protection cover, 5 is the tenon, 6 is the modified single plate of the flange, 7 is the base plate of the flange, and 8 is the modified web veneer, 9 is the web substrate.

Embodiment one:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 and the web 2 are all provided with a flange modified veneer 6 and a web modified veneer 8 on the surface, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) ) etc. to dip the veneer to achieve waterproof, anti-corrosion, anti-deformation and flame-retardant effects.

The flange substrate 7 is a fast-growing material LVL such as poplar, and a layer of flange modified veneer 6 in the same direction is arranged every 1 to 3 layers of fast-growing materials LVL such as poplar. The material used for the edge modification treatment veneer 6 is a fast-growing veneer such as poplar (its direction along the grain is consistent with the length direction of the I-beam), and the plate used for the flange 1 can be formed at one time by LVL processing technology; the web The base plate 9 is a fast-growing plywood such as poplar, and a layer of web modified veneer 8 is arranged every 1 to 3 layers of veneer in the plywood of poplar and other fast-growing veneer. The veneer 8 used for web modification The material is poplar and other fast-growing wood modified veneers (the direction of the surface veneer along the grain is consistent with the length direction of the I-beam, and the adjacent veneers are vertically staggered), and the plywood processing technology can be used for the web 2 Forming at one time; the finished plates used in the final flange 1 and web 2 are then processed into wooden I-beams through processes such as sanding, sizing, tooth milling, gluing, and assembly. The flange 1 of the I-beam and the mid-section of the web 2 maintain symmetrical configurations, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc., and the surface, surroundings and cutting holes of the I-beam are all Apply waterproof paint.

Embodiment two:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 and the web 2 are all provided with a flange modified veneer 6 and a web modified veneer 8 on the surface, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) ) etc. to dip the veneer to achieve waterproof, anti-corrosion, anti-deformation and flame-retardant effects.

The flange substrate 7 is a fast-growing material LVL such as poplar, and a layer of flange modified veneer 6 in the same direction is arranged every 1 to 3 layers of fast-growing materials LVL such as poplar. The material used for the edge modification treatment veneer 6 is a fast-growing veneer such as poplar (its direction along the grain is consistent with the length direction of the I-beam), and the plate used for the flange 1 can be formed at one time by LVL processing technology; the web The substrate 9 is fast-growing glulam such as masson pine (its direction along the grain is consistent with the length direction of the I-beam), and the material used for the web modification treatment veneer 8 is a modified treatment veneer of fast-growing materials such as poplar (its The direction along the grain of the surface veneer is consistent with the length direction of the I-beam, and the adjacent veneers are vertically staggered). The modified veneer 8 is processed, and then the base plate 9 and the modified veneer 8 are press-formed; the finished plates used for the flange 1 and the web 2 are sanded, cut to length, milled and grooved , gluing, assembly and other processes are processed into wooden I-beams. The flange 1 of the I-beam and the mid-section of the web 2 maintain symmetrical configurations, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc., and the surface, surroundings and cutting holes of the I-beam are all Apply waterproof paint.

Embodiment three:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 is provided with a flange modified veneer 6 on the surface; the web 2 is composed of three layers of glulam, the middle web substrate 9 is masson pine glulam, and the web on the surface is modified. The permanent treatment veneer 8 is a masson pine laminated board, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) to impregnate the veneer, so as to achieve waterproof, anti-corrosion, anti-deformation and Flame retardant and other effects.

The flange substrate 7 is a fast-growing material LVL such as poplar, and a layer of flange modified veneer 6 in the same direction is arranged every 1 to 3 layers of fast-growing materials LVL such as poplar. The material used for the edge modification treatment veneer 6 is a fast-growing veneer such as poplar (its direction along the grain is consistent with the length direction of the I-beam), and the plate used for the flange 1 can be formed at one time by LVL processing technology; the web Substrate 9 is a fast-growing glulam such as Masson pine (its direction along the grain is consistent with the length direction of the I-beam), and the material used for the web modification treatment veneer 8 is a laminated lumber of Masson pine (its direction along the grain is consistent with the length direction of the I-beam). The length and direction of the I-beam are consistent), and it has been treated with waterproof, anti-corrosion, anti-deformation and flame retardant. When processing the plate used for the web 2, the base plate 9 and the web modified veneer 8 can be processed respectively by using the glulam processing technology first, and then the base plate 9 and the web modified veneer 8 can be press-formed ; Finally, the finished plates used for the flange 1 and the web 2 are processed into wooden I-beams through processes such as sanding, sizing, tooth milling, gluing, and assembly. The flange 1 of the I-beam and the cross-section in the web 2 all maintain a symmetrical configuration, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc. All painted with waterproof paint.

Embodiment four:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 and the web 2 are all provided with a flange modified veneer 6 and a web modified veneer 8 on the surface, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) ) and so on to dip the veneer to achieve waterproof, anti-corrosion, anti-deformation and flame-retardant effects.

The flange substrate 7 is a fast-growing glulam such as masson pine (its direction along the grain is consistent with the length direction of the I-beam), and the material used for the flange modification treatment veneer 6 is a fast-growing veneer such as poplar (The direction along the grain is consistent with the length direction of the I-beam). When the plate used for the flange 1 is processed, the base plate 7 and the flange modified veneer 6 can be processed respectively by using the glued wood and plywood processing technology, and then The substrate 7 and the flange modified veneer 6 are press-molded; the web substrate 9 is a fast-growing plywood such as poplar, and a veneer is arranged every 1 to 3 layers of plywood such as poplar. Layer flange modification processing veneer 8, the material used in described web modification processing veneer 8 is the modified processing veneer of poplar etc. adjacent veneers are vertically staggered), and the sheet material used for web 2 can be formed at one time by plywood processing technology; finally, the finished sheet materials used for flange 1 and web 2 are sanded, cut to length, milled and grooved, Gluing, assembly and other processes are processed into wooden I-beams. The flange 1 of the I-beam and the mid-section of the web 2 maintain symmetrical configurations, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc., and the surface, surroundings and cutting holes of the I-beam are all Apply waterproof paint.

Embodiment five:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 and the web 2 are all provided with a flange modified veneer 6 and a web modified veneer 8 on the surface, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) ) and so on to dip the veneer to achieve waterproof, anti-corrosion, anti-deformation and flame-retardant effects.

The flange substrate 7 is a fast-growing glulam such as masson pine (its direction along the grain is consistent with the length direction of the I-beam), and the material used for the flange modification treatment veneer 6 is a fast-growing veneer such as poplar (The direction along the grain is consistent with the length direction of the I-beam). When the plate used for the flange 1 is processed, the base plate 7 and the flange modified veneer 6 can be processed respectively by using the glued wood and plywood processing technology, and then The base plate 7 and the modified flange 6 are press-molded; the web base plate 9 is a masson pine constant-speed-growing laminated material (its direction along the grain is consistent with the length direction of the I-beam), and the web The veneer 8 used for panel modification treatment is poplar and other fast-growing wood modification treatment veneer (the direction of the surface veneer along the grain is consistent with the length direction of the I-beam, and the adjacent veneers are vertically staggered), and the web 2 When processing the boards used, the substrate 9 and the web modified veneer 8 can be processed firstly by using the glulam and plywood processing technology, and then the substrate 9 and the web modified veneer 8 can be press-formed; Finally, the finished plates used for flange 1 and web 2 are processed into wooden I-beams through processes such as sanding, cutting to length, tooth milling, gluing, and assembly. The flange 1 of the I-beam and the mid-section of the web 2 maintain symmetrical configurations, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc., and the surface, surroundings and cutting holes of the I-beam are all Apply waterproof paint.

Embodiment six:

As shown in FIGS. 1 and 2 , a high-strength and durable wooden I-beam includes upper and lower flanges 1 , a middle web 2 and end protective sleeves 3 . The flange 1 is provided with a flange modified veneer 6 on the surface; the web 2 is composed of three layers of glulam, the middle web substrate 9 is masson pine glulam, and the web on the surface is modified. Sexually treated veneer 8 is a masson pine laminated board, using low molecular weight water-soluble phenolic resin (PF) or melamine-formaldehyde resin (MF) to impregnate the veneer to achieve waterproof, anti-corrosion, anti-deformation and resistance. burning effect.

The flange substrate 7 is a fast-growing laminated material such as masson pine (its direction along the grain is consistent with the length direction of the I-beam), and the material used for the modified flange veneer 6 is a fast-growing veneer such as poplar (The direction along the grain is consistent with the length direction of the I-beam). When the plate used for the flange 1 is processed, the base plate 7 and the flange modified veneer 6 can be processed respectively by using the glued wood and plywood processing technology, and then The base plate 7 and the modified flange 6 are press-molded; the web base plate 9 is a masson pine constant-speed-growing laminated material (its direction along the grain is consistent with the length direction of the I-beam), and the web The material used for board modification treatment veneer 8 is masson pine laminated board (its direction along the grain is consistent with the length direction of the I-beam), and can be treated as waterproof, anti-corrosion, deformation-proof and flame-retardant as required. When processing the plate used for the web 2, the base plate 9 and the web modified veneer 8 can be processed respectively by using the glulam processing technology first, and then the base plate 9 and the web modified veneer 8 can be press-formed ; Finally, the finished plates used for the flange 1 and the web 2 are processed into wooden I-beams through processes such as sanding, sizing, tooth milling, gluing, and assembly. The flange 1 of the I-beam and the cross-section in the web 2 all maintain a symmetrical configuration, and the end protective cover 3 can be anti-collision plastic, composite material or metal, etc. All painted with waterproof paint.

Claims (10)

1. A high-strength and durable wooden I-beam, comprising a flange (1), a web (2) and an end protection cover (3), characterized in that: the flange base plate (7) of the flange (1) ) on the upper and lower surfaces and the interior of the flange modification treatment veneer (6), the surface and interior of the web substrate (9) in the web (2) are provided with a web modification treatment veneer (8), the The flange modified veneer (6) and the web modified veneer (8) are impregnated veneers, and the adhesive used is low molecular weight water-soluble phenolic resin or melamine-formaldehyde resin. 2. A high-strength and durable wooden I-beam according to claim 1, characterized in that: said flange (1) is mainly made of finger-jointed wood, laminated veneer wood, parallel wood veneer or laminated wood veneer Wood. 3. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the web (2) is mainly made of plywood, oriented strand board, three-layer structural board, laminated veneer lumber or solid wood board . 4. A high-strength and durable wooden I-beam according to claim 1, characterized in that: when the veneer is compounded and modified inside the flange base plate (7) and the web base plate (9), the flange The permanent treated veneer (6) and the web modification treated veneer (8) are uniformly and symmetrically arranged in the cross section. 5. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the flange modified veneer (6) and the web modified veneer (8) are one layer or multiple layers. 6. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the direction along the grain of the modified flange (6) and web modified veneer (8) It is consistent with the length direction of the I-beam. If it is multi-layer, adjacent layers are vertically staggered. 7. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the raw materials used for the flange (1) and the web (2) are mainly fast-growing wood. 8. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the end protective cover (3) is made of anti-collision plastic, composite material or metal. 9. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the cross-sections of the flange (1) and the web (2) are kept symmetrical. 10. A high-strength and durable wooden I-beam according to claim 1, characterized in that: the flange (1) and the web (2) are connected by tenon and tenon.

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