CN111350307A - Self-locking steel-wood combined component - Google Patents

Abstract

The invention relates to a self-locking type steel-wood combined component which comprises H-shaped steel, a wood component with a trapezoidal section, a self-locking piece and a bolt, and is characterized in that the wood component with the trapezoidal section is positioned on the left side and the right side of a web plate of the H-shaped steel and is placed side by side, a gap is formed between the wood component and a flange of the H-shaped steel, the self-locking piece is placed in the gap and is fixedly connected with the H-shaped steel through the bolt, and the wood component is clamped in an H-shaped steel groove; the H-shaped steel is provided with folded plates at two ends of the flange at one end of the locking part, and threaded holes for penetrating the bolts are formed in the folded plates. The locking piece is a steel component, the locking piece is of a combined section, the lower part of the locking piece is of a right-angled trapezoidal section, the upper part of the locking piece is of a rectangular section, and a threaded through hole is formed in the rectangular part; the angle of the inclined plane of the trapezoidal part of the locking piece is consistent with that of the inclined plane of the wood component with the contacted trapezoidal section, the inclined plane of the trapezoidal part of the locking piece is attached to the inclined plane of the wood component, and the upper bottom surface of the trapezoidal part of the locking piece is attached to the inner side surface of the flange of the H-shaped steel. The invention improves the stability of the combined structure and reduces the consumption of building steel.

Description

A self-locking steel-wood composite component

technical field

The present invention relates to a structural member for building.

Background technique

Under the key areas and priority themes of green building and key energy consumption reduction, reducing the energy consumption and pollution emissions of traditional building materials such as steel and cement, and realizing the harmonious development of buildings and the natural environment are important problems faced by the construction industry. As a pure natural material, wood has the characteristics of low production cost, low energy consumption, non-toxic, non-polluting, etc. Compared with the carbon dioxide and energy consumption generated in the production process of concrete, cement and other materials, wood can be regenerated after felling. , Low processing energy consumption, natural degradation after disposal, no environmental pollution, in line with the national sustainable development strategy on building energy conservation, green environmental protection. At the same time, wood is an anisotropic material with high compressive and tensile strength along the grain direction, which can be regarded as a lightweight and high-strength material. Glued lumber processed by industrial processing of native wood has the advantages of unrestricted cross-sectional size, scattered defects, high usable strength, free cross-section and component shape, and availability of small-diameter and inferior materials. However, when the ordinary glulam beam is bent, the compressive strength of the wood is not fully utilized due to the brittle failure caused by the wood at the bottom of the beam being pulled off first. In addition, steel is an isotropic material with high strength and the highest ductility of all building materials, but it also has some disadvantages such as rusting and buckling.

Steel-wood composite components are designed to compensate for the respective shortcomings of wood and steel and maximize their advantages. From the point of view of mechanical properties, the trapezoidal section wood member can be used as the lateral support of the steel to restrain the buckling of the steel and prevent the structural instability. ; From an architectural point of view, wood has a more natural appearance, giving occupants a more visually comfortable experience and improving the livability of the house; in other aspects, wood is an excellent thermal insulation material. It can greatly improve the thermal insulation performance of building houses, and at the same time, the fire resistance of wood is stronger than that of steel. Under the same fire environment, the overall support time of the steel-wood composite structure is longer than that of steel-structured houses. To sum up, research and develop new steel-wood composite components, maximize the respective advantages of steel and wood, make steel-wood materials well coordinated, and build a new type of steel-wood composite green, building system has important economic value, ecological value and social value. significance.

Invention content:

The purpose of the present invention is to provide a steel-wood composite member with the advantages of simple structure, low price, convenient construction and good bearing capacity. The consumption of construction steel is reduced, and the appearance can be green and beautiful. The technical scheme adopted in the present invention is as follows:

A self-locking steel-wood composite member, comprising H-section steel, trapezoidal section wood members, locking pieces and bolts, characterized in that the trapezoidal section wood members are placed side by side on the left and right sides of the web of the H-section steel, and the trapezoidal section wood members are placed side by side with There is a gap between the flanges of the H-shaped steel, and the locking member is placed in the gap, and is connected and fixed with the H-shaped steel by bolts, and the trapezoidal section wooden member is clamped in the left and right grooves of the H-shaped steel through the trapezoidal section; The H-shaped steel has One end flange of the locking piece is provided with a folded plate at both ends, and the folded plate is formed with a threaded hole for passing the bolt; the locking piece is a steel member, the locking piece is a combined section, and the lower part is a right-angled trapezoid section. , the upper part has a rectangular section, and the rectangular part is provided with threaded perforations; the self-locking steel-wood composite member according to claim 4 is characterized in that: the angle of the inclined plane of the trapezoidal part of the locking piece is related to the contact angle of the trapezoidal section wooden member. The angle of the inclined plane is the same, the inclined plane of the trapezoidal part is attached to the inclined plane of the trapezoidal section wooden member, and the upper bottom surface is attached to the inner side of the H-shaped steel flange.

Further, the locking member is either a long strip-shaped structure or a plurality of short strip-shaped structures placed at a certain interval along the axial direction of the member.

The trapezoidal section wooden member is a non-right-angled trapezoidal section wooden member, and the two flanges of the H-shaped steel are provided with locking pieces to form a double self-locking steel-wood composite member. As a double self-locking steel-wood composite member, there are two trapezoidal-section wooden members on the left and right of the H-section steel web, and the cross-section is a right-angled trapezoid, in which embedded steel plates fixedly connected to the trapezoidal-section wooden members are placed.

The trapezoidal section wooden member can also be a right-angled trapezoidal section wooden member, one flange of the H-section steel is attached to the right-angled side surface of the trapezoidal section wooden member, and the other flange of the H-section steel is provided with the locking piece.

The principle of the invention is: the bolt is connected to the screw hole of the H-shaped steel through the screw hole of the locking piece, and during the screwing process of the screw, the locking piece is pushed to the inner side of the flange of the H-shaped steel and moves forward until the inclined surface of the locking piece is in contact with the The inclined plane of the trapezoidal section wooden member continues to move forward to generate prestress between the H-beam, the locking piece and the trapezoidal section wooden member to form an integral composite member. At the same time, the overall prestress of the structure can be adjusted by the screwing degree of the bolt. , In the component bearing, the trapezoidal section wooden component will not be separated from the H-shaped steel channel due to the inclined plane structure. Compared with the prior art, the advantages and positive effects of the present invention are:

1. The present invention takes the H-shaped steel member as the core, and the trapezoidal section wooden member is tightly fixed on the left and right sides of the web of the H-shaped steel member through the bolt locking of the locking member, so that the trapezoidal section wooden member and the steel member have internal stress in the cross-section. The trapezoidal section wooden member is completely attached to the web of the H-section steel member, and the locking member is completely attached to the web of the H-section steel member and the trapezoidal section wooden member. component of the formula;

2. Compared with the existing steel-wood composite components that are combined by bolts or gluing, this component is connected by locking parts, which greatly reduces the amount of bolts, and only requires fewer bolts to fix the trapezoidal section wooden components. At the same time, it can ensure that the trapezoidal section wood members closely fit the H-section steel web and flange at the same time, so that all directions of the composite section are closely matched, which improves the combination efficiency of the trapezoidal section wood members at the web, and also facilitates installation, disassembly and replacement;

3. The internal prestress of the wood is lost due to creep. The existence of the tapered section will not cause the wood to slip out. At the same time, the locking piece still has a certain margin. The components need to be disassembled, and the trapezoidal section wooden components also ensure that the strength will not be reduced due to the lack of bolt holes;

4. In the case where the H-beam and the trapezoidal cross-section wooden members at the web are closely fitted and fully coordinated, the overall strength of the structure is increased, and the required cross-sectional area is reduced. The main load-bearing trapezoidal section wood members are more used as appearance aids, fire protection and protection against buckling, and together with the trapezoidal section wood members at the web, they play a green and beautiful effect.

5. There are various combinations of the components, and the specific structural details can be selected according to the structural needs, or the trapezoidal section wooden components can be replaced with bamboo components, or the H-shaped steel components can be replaced with H-shaped aluminum alloy components, which can be selected according to different strength requirements. Number, length and location of locking elements.

In a word, the present invention combines the H-shaped steel member and the trapezoidal section wood member by self-locking, fully considers the characteristics and advantages and disadvantages of wood and steel, analyzes the shortcomings of the existing steel-wood composite structure and makes reasonable use of its advantages. , designed a new type of steel-wood composite components, which greatly increased the combined efficiency of steel-wood and improved the performance of the components.

Description of drawings

Fig. 1 is the oblique view of specific embodiment 1 under the self-locking steel-wood composite member elongated locking piece;

Fig. 2 is a sectional view of the specific embodiment 1 of the self-locking steel-wood composite member;

Fig. 3 is the oblique view of specific embodiment 1 under the self-locking steel-wood composite member short bar locking piece;

Fig. 4 is the oblique view of specific embodiment 2 under the self-locking steel-wood composite member elongated locking member;

Fig. 5 is the oblique view of specific embodiment 2 under the self-locking steel-wood composite member short bar locking piece;

Fig. 6 is the specific embodiment 2 oblique view of self-locking steel-wood composite member embedded steel plate;

Fig. 7 is the exploded view of specific embodiment 1 under the self-locking steel-wood composite member elongated locking member;

Fig. 8 is the exploded view of specific embodiment 2 under the self-locking steel-wood composite member short bar locking piece;

FIG. 9 is an exploded view of Embodiment 2 after the steel plate is embedded under the short bar locking piece of the self-locking steel-wood composite member.

In the picture: 1- locking piece; 2- trapezoidal section wooden member; 3- H-beam; 4,5- external veneer; 6- bolt; 7- embedded steel plate.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

This embodiment discloses a self-locking steel-wood composite member, and the specific embodiment 1 includes an H-shaped steel 3 , a trapezoidal cross-section wood member 2 , a locking member 1 , a bolt 6 , and outer veneer boards 4 and 5 . The trapezoidal section wooden member 2 is placed side by side on the left and right sides of the web of the H-section steel 3. There is a gap between the trapezoidal section wooden member 2 and the flange of the H-section steel 3. The connection is fixed, the trapezoidal section wooden member 2 is clamped in the groove of the H-beam 3 through the inclined plane, and the outer surfaces of the upper and lower flanges of the H-beam 3 can be pasted with external veneer boards 4 and 5. The combined structural dimension is about the central axis of the H-beam 3. say;

The H-shaped steel 3 is an unequal-wing H-shaped steel. The H-shaped steel 3 is connected with a flange of one end of the locking member 1 and both ends are provided with 90° folded plates, and the folded plates are made with threaded holes; the trapezoidal section wooden member 2 is a right-angled trapezoidal section wooden member. The trapezoidal section wooden member 2 is made of native wood or glued wood, and the inner angle of the trapezoid is 3° to 15°; the locking member 1 is a steel member, and has a combined section, the lower part is a right-angled trapezoid section, and the upper part is a rectangular section, Threaded holes are made in the rectangular part for the connection of the bolts 6;

The trapezoidal section wooden member 2 is placed on the left and right sides of the H-section steel 3 web. The lower bottom surface of the trapezoidal section wooden member 2 is attached to the web, and the width is less than the height of the web. The vertical distance from the flange end of the airfoil H-section steel 3 to the web is not less than the vertical distance from the short flange end to the web; the angle of the inclined plane of the trapezoidal part of the locking piece 1 is consistent with the inclined plane angle of the trapezoidal section wooden member 2 in contact, and its The inclined surface of the trapezoidal part is attached to the inclined surface of the trapezoidal section wooden member 2, and the upper bottom surface is attached to the inner side of the flange of the H-shaped steel 3. The height of the trapezoidal part is less than the height of the trapezoidal section wooden member 2, and the top surface width is greater than the difference between the inner height of the H-beam 3 web and the bottom surface width of the trapezoidal section wooden member 2, and is smaller than the difference between the inner height of the web and the top surface of the trapezoidal section wooden member. The height of the rectangular part of the locking member 1 is the same as the height of the flange end folded plate of H-beam 3, and the size of the internal screw hole is the same as the screw hole of the flange end folded plate, and is located in the same position;

The specific embodiment 2 includes an H-shaped steel 3 , a trapezoidal cross-section wooden member 2 , a locking member 1 , a bolt 6 , outer veneer boards 4 and 5 , and an embedded steel plate 7 . The trapezoidal section wooden member 2 is placed side by side on the left and right sides of the web of the H-section steel 3. There is a gap between the trapezoidal section wooden member 2 and the flange of the H-section steel 3. The connection is fixed, and the trapezoidal section wooden member 2 is clamped in the groove of H-beam 3 through the inclined plane. The outer surfaces of the upper and lower flanges of the H-beam 3 can be pasted with external veneer boards 4 and 5. The combined structural dimension is about the central axis of the H-beam 3. say;

H-shaped steel 3 is equal-wing H-shaped steel. Both ends of the upper and lower flanges of H-shaped steel 3 are provided with 90° folded plates, and threaded holes are formed on the folded plates for connecting the locking piece 1; Sectional wood members. The trapezoidal section wooden member is made of native wood or glued wood, and the inner angle of the trapezoid is 3° to 15°; the locking member 1 is a steel member, and the combined section, the lower part is a right-angled trapezoid section, the upper part is a rectangular section, rectangular Parts are made with threaded holes for the connection of bolts 6;

The trapezoidal section wooden member 2 is placed on the left and right sides of the web of the H-section steel 3, the lower bottom surface of the trapezoidal section wooden member 2 is against the web, the width is less than the height of the web, and the height is not greater than the flange end of the unequal-wing H-section steel 3. The vertical distance of the web is not less than the vertical distance from the end of the short flange to the web; the angle of the slope of the trapezoidal part of the locking piece 1 is the same as the angle of the slope of the trapezoidal section wood member 2, and the slope of the trapezoidal section is close to the trapezoidal section wood. On the inclined surface of member 2, the upper bottom surface is attached to the inner side of the flange of H-beam 3. The height of the trapezoidal part is less than the height of the trapezoidal section wooden member 2, and the top surface width is greater than the difference between the inner height of the H-beam 3 web and the bottom surface width of the trapezoidal section wooden member 2, and is smaller than the difference between the inner height of the web and the top surface of the trapezoidal section wooden member. The height of the rectangular part of the locking member 1 is the same as the height of the flange end folded plate of H-beam 3, and the size of the internal screw hole is the same as the screw hole of the flange end folded plate, and is located in the same position;

The oblique angles of the two inclined surfaces of the non-right-angled trapezoidal section wooden member 2 are not necessarily equal, that is, the cross-section is not necessarily an isosceles trapezoid, and the bevel angles of the corresponding contact locking parts 1 are kept the same; it is called a double self-locking steel-wood composite member, and it can be used at this time. Split the trapezoidal section wooden member 2 into two right-angled trapezoidal section wooden members 2, and insert embedded steel plates 7 into them for reinforcement, and the embedded steel plates can be glued;

For the specific embodiments 1 and 2, the steel-wood composite members can be bonded to the outer sides of the upper and lower flanges of the H-shaped steel for reinforcement, fire resistance, and landscaping. The distance between the folded plates at both ends of the flange without a folded plate and the width of the flange with a folded plate; the locking member 1 can be a long strip structure along the axial direction of the component, or can be a number of short strip structures placed at a certain interval. The number and spacing of the screw holes on the fastener and the corresponding positions of the H-beam 3 are determined according to the actual situation;

The principle of the present invention is: the bolts 6 are connected to the screw holes of the H-shaped steel 3 through the screw holes of the locking member 1. During the screwing process of the bolts 6, the locking member 1 is pushed against the inner side of the flange of the H-shaped steel 3 and moves forward until The inclined surface of the locking piece sticks to the inclined surface of the trapezoidal section wooden member 2, and continues to advance so that prestress is generated between the H-beam 3, the locking piece 1, and the trapezoidal section wooden member 2 to form an integral composite member, and at the same time, the bolts can be passed through. The screw-in degree of 6 adjusts the overall prestress of the structure, and the trapezoidal section wooden member 2 will not be separated from the H-beam 3 due to the inclined plane structure during the component bearing;

The present invention is not limited to the embodiments described above. The above preferred embodiments are only illustrative of the technical solutions of the present invention, and are only illustrative, rather than all embodiments. All other embodiments obtained by those skilled in the art without departing from the spirit of the present invention and the scope of protection by the claims fall within the protection scope of the present invention.

Claims (7)

1. A self-locking steel-wood combined component comprises H-shaped steel, a wood component with a trapezoidal section, a self-locking piece and a bolt, and is characterized in that the wood component with the trapezoidal section is positioned on the left side and the right side of a web plate of the H-shaped steel and placed side by side, a gap is formed between the wood component and a flange of the H-shaped steel, the self-locking piece is placed in the gap and connected and fixed with the H-shaped steel through the bolt, and the wood component is clamped and fixed in an H-shaped steel groove through the; the H-shaped steel is provided with folded plates at two ends of the flange at one end of the locking part, and threaded holes for penetrating the bolts are formed in the folded plates. The locking piece is a steel component, the locking piece is of a combined section, the lower part of the locking piece is of a right-angled trapezoidal section, the upper part of the locking piece is of a rectangular section, and a threaded through hole is formed in the rectangular part; the angle of the inclined plane of the trapezoidal part of the locking piece is consistent with that of the inclined plane of the wood component with the contacted trapezoidal section, the inclined plane of the trapezoidal part of the locking piece is attached to the inclined plane of the wood component, and the upper bottom surface of the trapezoidal part of the locking piece is attached to the inner side surface of the flange of the H-shaped steel.

2. The self-locking steel-wood composite member according to claim 1, wherein: the inner angle of the trapezoid of the wood member with the trapezoid cross section is 3-15 degrees.

3. The self-locking steel-wood composite member according to claim 1, wherein: the retaining member is of a strip structure or a plurality of short strip structures which are arranged at certain intervals along the axial direction of the component.

4. The self-locking steel-wood composite member according to any one of claims 1 to 3, wherein: the trapezoidal section wood component is a non-right-angle trapezoidal section wood component, and locking parts are arranged at two wing edges of the H-shaped steel to form a double-self-locking steel-wood combined component.

5. The self-locking steel-wood composite member according to claim 4, wherein: as a double self-locking steel-wood combined component, the trapezoidal section wood component is split into two right-angle trapezoidal section wood components, and a steel plate fixedly connected with the wood components is placed in the two right-angle trapezoidal section wood components.

6. The self-locking steel-wood composite member according to claim 1, wherein: the trapezoidal section wood member is a right-angle trapezoidal section wood member, one flange of the H-shaped steel is attached to the right-angle side face of the trapezoidal section wood member, and the locking piece is arranged at the other flange of the H-shaped steel.

7. The self-locking steel-wood composite member according to claim 1, wherein: the outer sides of two flanges of the H-shaped steel are fixed with long wood boards, and the width of each wood board is equal to the distance between the folded plates at two ends of the flange of the H-shaped steel with the folded plates or the width of the flange without the folded plates.

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