CN217871397U

CN217871397U - Large-span energy-consumption engineering bamboo-wood-steel net rack combined structure

Info

Publication number: CN217871397U
Application number: CN202221217418.4U
Authority: CN
Inventors: 李向民; 冷予冰; 许清风; 张富文; 肖顺; 陈溪
Original assignee: SHANGHAI JIANKE PRESTRESSED TECHNOLOGY ENGINEERING CO LTD; Shanghai Building Science Research Institute Co Ltd
Current assignee: SHANGHAI JIANKE PRESTRESSED TECHNOLOGY ENGINEERING CO LTD; Shanghai Building Science Research Institute Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-11-22
Anticipated expiration: 2032-05-20

Abstract

The utility model provides a large-span energy-consuming engineering bamboo-wood steel net rack combined structure, which comprises an engineering bamboo-wood hollow composite roof panel, a steel net rack and a plurality of engineering bamboo columns; the steel net rack is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof board, and the bottoms of four corners of the steel net rack are erected and fixed on the engineering bamboo column; and the steel net frame is provided with a high-viscosity energy dissipation structure at the joint point adjacent to the steel net frame and the engineering bamboo column. The utility model discloses a large-span power consumption engineering bamboo wood steel rack integrated configuration can full play engineering bamboo timber, timber and the respective mechanical properties advantage of steel, realizes the application of engineering bamboo timber in striding spatial structure greatly, simultaneously through setting up power consumption spare in the key depression bar region, avoids key position web member pressurized to destroy and arouses that the structure is whole to collapse.

Description

Large-span energy-consumption engineering bamboo-wood-steel net rack combined structure

Technical Field

The utility model relates to a structural engineering field especially relates to a large-span power consumption engineering bamboo wood steel rack integrated configuration.

Background

China is the most abundant world bamboo resource country, the bamboo forest area accounts for about 19% of the world bamboo forest total area, the bamboo wood has the advantages of being renewable, easy to degrade, high in strength-weight ratio, light in weight, resistant to earthquake, small in heat conductivity coefficient and the like, and under the background of developing green environment-friendly ecological buildings and building industrialization, how to reasonably utilize the natural material enables the bamboo building to play the unique role in sustainable urban and rural construction becomes a new exploration direction. With the continuous progress of the engineering bamboo processing technology, the breakthrough of bamboo utilization is realized, compared with the round bamboo, the physical mechanical property and the durability of the engineering bamboo are improved, the material defects and the dimensional variability of the round bamboo are overcome, and the engineering bamboo has a large development space when being used for engineering load-bearing structures.

The engineering bamboo material has excellent mechanical property along the grain direction due to the unidirectionality of the fiber, the strength-weight ratio of the engineering bamboo material is even higher than that of steel, but the strength of the engineering bamboo material in the cross grain direction is very low, so that the engineering bamboo material is limited when being used for a bidirectional bending member, needs certain technical treatment and is limited by the elastic modulus of the material, the section of the engineering bamboo bending member is generally controlled by deformation, the strength of the material cannot be fully utilized, and the engineering bamboo material is difficult to be used for a large-span space structure. The engineering bamboo layer plates are orthogonally arranged and are overlapped with the wood keels to form a hollow plate type component, the structural dead weight can be reduced while the rigidity of the cross section of the component is ensured, and meanwhile, the middle wood keels can be made of fast-growing wood with relatively low strength. And the material is further combined with materials such as steel materials and the like to manufacture a large-span space structure, so that the mechanical property advantages of various materials can be fully utilized, and the utilization rate of the materials is improved.

On the other hand, for a combined space structure locally adopting a steel net rack, under the action of sudden accidental loads such as earthquakes, the damage of key pressed rods is easy to occur, so that the continuous damage of other rods or nodes is caused, and the overall collapse of the structure is caused. When the steel rod piece with small slenderness ratio is connected with the engineering bamboo component with larger rigidity, the failure of the pressed steel rod piece in a key area is easily aggravated due to the rigidity difference among the components. In a combined structure formed by engineering bamboos and steel, a protection mechanism for avoiding early failure of local steel bars is required to be researched and developed, energy dissipation pieces are arranged in a key area, the whole structure collapse caused by the damage of key components in the key area of the combined structure is prevented, and the whole disaster prevention capability of the structure is improved.

Disclosure of Invention

Not enough to above-mentioned prior art, the utility model provides a large-span power consumption engineering bamboo wood steel rack integrated configuration can full play engineering bamboo timber, timber and steel respective mechanical properties advantage, realizes the application of engineering bamboo timber in striding spatial structure greatly, simultaneously through setting up power consumption piece in the key depression bar region, avoids the key position web member pressurized to destroy and arouses that the structure wholly collapses.

In order to realize the purpose, the utility model provides a large-span energy-consuming engineering bamboo-wood steel net rack combined structure, which comprises an engineering bamboo-wood hollow composite roof board, a steel net rack and a plurality of engineering bamboo columns; the steel net rack is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof board, and the bottoms of four corners of the steel net rack are erected and fixed on the engineering bamboo column; and the steel net frame is provided with a high-viscosity energy dissipation structure at the joint point adjacent to the steel net frame and the engineering bamboo column.

Preferably, the engineering bamboo-wood hollow composite roof panel comprises an upper engineering bamboo-layer panel, a lower engineering bamboo-layer panel and a plurality of laminated wood keels, wherein the laminated wood keels are vertically arranged between the upper engineering bamboo-layer panel and the lower engineering bamboo-layer panel at intervals and are connected with the upper engineering bamboo-layer panel and the lower engineering bamboo-layer panel in a gluing mode; the upper engineering bamboo layer plate and the lower engineering bamboo layer plate respectively comprise two engineering bamboo plates which are orthogonally arranged and are glued and fixed; the upper engineering bamboo-layer plate and the lower engineering bamboo-layer plate are matched with the glued wood keel to form a hollow structure in the middle of the engineering bamboo-wood hollow composite roof panel.

Preferably, the steel net rack comprises a plurality of round steel pipe lower chords, a plurality of round steel pipe web members and a plurality of T-shaped steel upper chords; the upper chord of the T-shaped steel is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof panel; the lower chord of the round steel pipe is fixed below the upper chord of the T-shaped steel through the web member of the round steel pipe; the circular steel tube lower chord member, the circular steel tube web member and the T-shaped steel upper chord member are matched to form a grid structure.

Preferably, the upper chord of the T-shaped steel is fixedly connected with the engineering bamboo-wood hollow composite roof panel through a plurality of self-tapping screws; the self-tapping screw is followed the perpendicular impact of edge of a wing downside of T shaped steel upper chord member is in among the hollow compound roof boarding of engineering bamboo wood, the edge of a wing of T shaped steel upper chord member is setting up the through-hole is opened in advance in self-tapping screw's position.

Preferably, the top of the engineering bamboo column is provided with a cross-shaped groove, and a cross-shaped steel filler plate is partially inserted into the cross-shaped groove and is fixedly connected with the engineering bamboo column through a bolt in a threaded manner; pre-opening bolt holes at the positions where the bolts are arranged on the cross-shaped steel filling plate and the engineering bamboo columns; a steel ball is welded at the top of the cross-shaped steel filling plate; the lower chord members of the circular steel tubes and the web members of the circular steel tubes at the four corners of the steel net rack are fixedly connected with the steel balls.

Preferably, the high-viscosity energy dissipation structure comprises a plurality of high-viscosity energy dissipation sections; the four corners of the steel net rack are connected with the middle part of the round steel pipe web member, which is provided with the high-viscosity energy dissipation section.

Preferably, the circular steel tube web member connected with the steel ball comprises two web member sections, and the high-viscosity energy consumption section is connected between the two web member sections; the high-viscosity energy consumption section comprises two energy consumption end plates, an energy consumption rod, a steel sleeve and two high-viscoelasticity rubbers; the energy dissipation end plates are respectively fixed at the adjacent ends of the two web rod sections; the energy consumption rod is connected between the two energy consumption end plates; the steel sleeve wraps the energy consumption rod, the inner diameter of the steel sleeve is the same as the diameter of the energy consumption rod, and the length of the steel sleeve is 5-10 mm smaller than that of the energy consumption rod; and the high-viscoelasticity rubber is filled in a gap between the steel sleeve and the energy consumption end plate.

The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:

the utility model discloses can make full use of steel tensile strength height, the good mechanical properties advantage of engineering bamboo timber resistance to compression ductility combine it to make and stride spatial structure greatly, improved the utilization ratio of two kinds of materials. The upper engineering bamboo-wood hollow composite roof board of the combined roof is a hollow board type component formed by orthogonalizing and gluing engineering bamboo boards and laminating glued wood keels, and the structural self-weight can be reduced while the rigidity of the cross section of the component is ensured. The middle engineering bamboo laminate can be made of fast-growing wood with relatively low strength, and the problems that the strength of the economic fast-growing wood is relatively low and the structure bearing requirement cannot be met by single use are solved. The upper chord of the T-shaped steel of the steel net rack is fixedly connected with the engineering bamboo roof board, so that the problem that the pressed steel member is easy to lose stability is solved. Meanwhile, the high-viscosity energy consumption section is arranged in the round steel pipe web member at the corner, so that the whole structure collapse caused by the pressure damage of the web member at the key position can be avoided, and the whole disaster prevention capability of the structure is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first view angle of a large-span energy-consuming engineering bamboo-wood-steel grid combined structure in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second view angle of the large-span energy-consuming engineering bamboo-wood-steel grid combined structure of the embodiment of the present invention;

FIG. 3 is a cross-sectional view of the engineering bamboo-wood hollow composite roof panel of the embodiment of the present invention;

FIG. 4 is a front view of an engineering bamboo-wood hollow composite roof board and a steel net rack according to an embodiment of the present invention;

fig. 5 is a schematic view of a top connection structure of an engineering bamboo column according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the high viscosity energy consumption section according to the embodiment of the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings, fig. 1 to 6, and will make the functions and features of the present invention better understood.

Referring to fig. 1 to 6, a large-span energy-consuming engineering bamboo-wood steel net rack combined structure according to an embodiment of the present invention includes an engineering bamboo-wood hollow composite roof panel 1, a steel net rack 2 and a plurality of engineering bamboo columns 3; the steel net frame 2 is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof board 1, and the bottoms of four corners of the steel net frame 2 are erected and fixed on the engineering bamboo column 3; the steel net rack 2 is provided with a high-viscosity energy dissipation structure at the joint point adjacent to the steel net rack 2 and the engineering bamboo column 3.

In this embodiment, the dimension of the engineering bamboo column 3 is 300mm × 300mm, and the distance between the two-way axes is 9m.

The engineering bamboo-wood hollow composite roof panel 1 comprises an upper engineering bamboo-layer plate 11, a lower engineering bamboo-layer plate 12 and a plurality of glued wood keels 13, wherein the glued wood keels 13 are vertically arranged between the upper engineering bamboo-layer plate 11 and the lower engineering bamboo-layer plate 12 at intervals and are glued and connected with the upper engineering bamboo-layer plate 11 and the lower engineering bamboo-layer plate 12; the upper engineering bamboo layer plate 11 and the lower engineering bamboo layer plate 12 respectively comprise two engineering bamboo plates which are orthogonally arranged and are glued and fixed; the upper engineering bamboo-layer plate 11 and the lower engineering bamboo-layer plate 12 are matched with the glued wood keel 13 to form a hollow structure in the middle of the engineering bamboo-wood hollow composite roof panel 1.

In this embodiment, the dimension of the engineering bamboo-wood hollow composite roof board 1 is 9300mm × 9300mm. The thickness of the engineering bamboo board is 10mm. The cross-sectional dimension of the glued wood dragon is 20mm multiplied by 20mm. The total thickness of the engineering bamboo-wood hollow composite roof board 1 is 80mm.

The steel net rack 2 comprises a plurality of round steel pipe lower chords 21, a plurality of round steel pipe web members 22 and a plurality of T-shaped steel upper chords 23, and all the round steel pipe web members are made of Q235B-grade steel; the T-shaped steel upper chord 23 is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof panel 1; the round steel tube lower chord member 21 is fixed below the T-shaped steel upper chord member 23 through a round steel tube web member 22; the circular steel tube lower chord 21, the circular steel tube web member 22 and the T-shaped steel upper chord 23 are matched to form a grid structure.

The lower chord 21 of the circular steel tube adopts

Manufacturing a hollow round steel tube; the web member 22 of the circular steel tube adopts

Manufacturing a hollow round steel tube; the section size of the flange of the upper chord 23 of the T-shaped steel is 100mm multiplied by 3mm, the section size of the web plate is 50mm multiplied by 4mm, and the upper chord is formed by vertically welding two steel plates.

The T-shaped steel upper chord 23 is fixedly connected with the engineering bamboo-wood hollow composite roof panel 1 through a plurality of self-tapping screws 4; the self-tapping screws 4 are vertically driven into the engineering bamboo-wood hollow composite roof panel 1 from the lower side surfaces of the flanges of the T-shaped steel upper chords 23, and through holes are pre-formed in the flanges of the T-shaped steel upper chords 23 at the positions where the self-tapping screws 4 are arranged.

The diameter of the tapping screw 4 is 6mm, and the length is 60mm; the self-tapping screws 4 are arranged along the upper chord 23 of the T-shaped steel, 3 self-tapping screws 4 are evenly arranged along each side in the grid unit of each

steel grid frame

2, and 12 self-tapping screws 4 are arranged in each grid unit.

The top of the engineering bamboo column 3 is provided with a cross-shaped groove, and a cross-shaped steel filling plate 5 is partially inserted into the cross-shaped groove and is fixed with the engineering bamboo column 3 through a bolt 6 in a threaded manner; pre-opening bolt holes at the positions where the bolts 6 are arranged on the cross-shaped steel filling plate 5 and the engineering bamboo columns 3; a steel ball 7 is welded at the top of the cross-shaped steel filling plate 5; the lower chord 21 and the web member 22 of the round steel tube at the four corners of the steel net rack 2 are fixedly connected with the steel ball 7.

In the embodiment, the cross-shaped steel filling plate is 5mm thick and 10mm thick, and is formed by welding a steel plate 300mm wide and two steel plates 145mm wide; the thickness of the cross-shaped groove is 12mm, and the cross-shaped groove is used for inserting the cross-shaped steel filling plate 5; the diameter of the bolt 6 is 18mm; the diameter of the bolt hole is 20mm; the steel ball 7 has the diameter of 150mm and is welded and fixed with the corresponding lower chord 21 and the corresponding web member 22 of the circular steel tube.

The high-viscosity energy dissipation structure comprises a plurality of high-viscosity energy dissipation sections 8; the middle part of the round steel tube web member 22 which is connected with the steel ball 7 at the four corners of the steel net rack 2 is provided with a high-viscosity energy consumption section 8.

The circular steel tube web member 22 connected with the steel ball 7 comprises two web member sections, and the high-viscosity energy consumption section 8 is connected between the two web member sections; the high viscosity energy consumption section 8 comprises two energy consumption end plates 81, an energy consumption rod 82, a steel sleeve 83 and two high viscoelasticity rubbers 84; the energy dissipation end plates 81 are respectively fixed at the adjacent ends of the two web rod sections; the energy consumption rod 82 is connected between the two energy consumption end plates 81; the steel sleeve 83 wraps the energy consumption rod 82, the inner diameter of the steel sleeve 83 is the same as the diameter of the energy consumption rod 82, and the length of the steel sleeve 83 is 5-10 mm smaller than that of the energy consumption rod 82; the gap between the steel sleeve 83 and the dissipative end plate 81 is filled with highly viscoelastic rubber 84.

In this embodiment, the energy dissipation end plate 81 is 10mm thick; the diameter of the energy consumption rod 82 is 36mm, the length of the energy consumption rod is 150mm, and the energy consumption end plate 81 and the energy consumption rod 82 are made of aluminum alloy; the steel sleeve 83 is 140mm long.

When the structure bears accidental load and leads to bight circular steel tube web member 22 to bear great pressure, power consumption pole 82 in the circular steel tube web member 22 extrudes power consumption end plate 81, through the shear deformation dissipation energy of power consumption end plate 81, after the deformation that power consumption pole 82 extrudes power consumption end plate 81 and produces is great, high viscoelasticity rubber 84 also can produce certain compression deformation and dissipate the energy, steel sleeve 83 in the power consumption pole 82 outside participates in the pressurized under high elasticity rubber 84's extrusion simultaneously, avoid middle power consumption pole 82's unstability to destroy, ensure that the web member is receiving great pressure, can not take place destruction under the condition that produces big compression deformation, avoid overall structure to collapse through protecting key compression member.

The utility model discloses a large-span power consumption engineering bamboo wood steel rack integrated configuration, make full use of engineering bamboo, wood, steel respective mechanical properties advantage, the engineering bamboo plywood and the veneer wood fossil fragments 13 that the quadrature was arranged can effectively alleviate the structure dead weight when realizing the two-way atress performance of roof boarding, have improved material utilization, are applicable to and stride spatial structure greatly, have good development application prospect in the modern bamboo wood structure building of assembled.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which is to be interpreted as broadly as the appended claims define the scope of the invention.

Claims

1. A large-span energy-consuming engineering bamboo-wood-steel grid combined structure is characterized by comprising an engineering bamboo-wood hollow composite roof board (1), a steel grid (2) and a plurality of engineering bamboo columns (3); the steel net rack (2) is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof board (1), and the bottoms of four corners of the steel net rack (2) are erected and fixed on the engineering bamboo columns (3); and the steel net rack (2) is provided with a high-viscosity energy dissipation structure at the joint point adjacent to the steel net rack (2) and the engineering bamboo column (3).

2. The large-span energy-consuming engineering bamboo-wood-steel grid combined structure as claimed in claim 1, wherein the engineering bamboo-wood hollow composite roof panel (1) comprises an upper engineering bamboo-layer panel (11), a lower engineering bamboo-layer panel (12) and a plurality of laminated wood keels (13), wherein the laminated wood keels (13) are vertically arranged between the upper engineering bamboo-layer panel (11) and the lower engineering bamboo-layer panel (12) at intervals and are in glued connection with the upper engineering bamboo-layer panel (11) and the lower engineering bamboo-layer panel (12); the upper engineering bamboo layer plate (11) and the lower engineering bamboo layer plate (12) respectively comprise two engineering bamboo plates which are orthogonally arranged and are fixedly glued; the upper engineering bamboo layer plate (11) and the lower engineering bamboo layer plate (12) are matched with the glued wood keel (13) to form a hollow structure in the middle of the engineering bamboo-wood hollow composite roof board (1).

3. The large-span energy-consuming engineering bamboo-wood-steel grid combined structure according to claim 1, wherein the steel grid (2) comprises a plurality of round steel tube lower chords (21), a plurality of round steel tube web members (22) and a plurality of T-shaped steel upper chords (23); the T-shaped steel upper chord member (23) is fixed on the bottom surface of the engineering bamboo-wood hollow composite roof panel (1); the lower chord member (21) of the round steel pipe is fixed below the upper chord member (23) of the T-shaped steel through the web member (22) of the round steel pipe; the circular steel tube lower chord member (21), the circular steel tube web member (22) and the T-shaped steel upper chord member (23) are matched to form a grid structure.

4. The large-span energy-consuming engineering bamboo-wood-steel grid combined structure according to claim 3, wherein the T-shaped steel upper chord member (23) is fixedly connected with the engineering bamboo-wood hollow composite roof panel (1) through a plurality of self-tapping screws (4); the self-tapping screws (4) are driven into the lower side face of a flange of the T-shaped steel upper chord (23) perpendicularly in the engineering bamboo-wood hollow composite roof panel (1), the flange of the T-shaped steel upper chord (23) is arranged on the position of the self-tapping screws (4) to be pre-opened with through holes.

5. The large-span energy-consumption engineering bamboo-wood-steel grid combined structure according to claim 3, wherein a cross-shaped groove is formed in the top of the engineering bamboo column (3), and a cross-shaped steel filler plate (5) is partially inserted into the cross-shaped groove and is fixedly connected with the engineering bamboo column (3) through a bolt (6) in a threaded manner; the cross-shaped steel filling plate (5) and the engineering bamboo column (3) are provided with bolt holes in advance at the positions where the bolts (6) are arranged; a steel ball (7) is welded at the top of the cross-shaped steel filling plate (5); four angles of the steel net rack (2) are connected and fixed with the lower chord (21) of the circular steel tube and the web member (22) of the circular steel tube (7).

6. The large-span energy-consuming engineering bamboo-wood-steel grid combined structure according to claim 5, wherein the high-viscosity energy-consuming structure comprises a plurality of high-viscosity energy-consuming sections (8); four angles of the steel net rack (2) are connected with the steel balls (7), and the middle of the round steel tube web member (22) is provided with the high-viscosity energy consumption section (8).

7. The large-span energy-consuming engineering bamboo-wood-steel grid combined structure according to claim 6, wherein the circular steel tube web member (22) connected with the steel ball (7) comprises two web member sections, and the high-viscosity energy-consuming section (8) is connected between the two web member sections; the high-viscosity energy consumption section (8) comprises two energy consumption end plates (81), an energy consumption rod (82), a steel sleeve (83) and two high-viscoelasticity rubbers (84); the energy consumption end plates (81) are respectively fixed at the adjacent ends of the two web rod sections; the energy consumption rod (82) is connected between the two energy consumption end plates (81); the steel sleeve (83) is wrapped outside the energy consumption rod (82), the inner diameter of the steel sleeve (83) is the same as the diameter of the energy consumption rod (82), and the length of the steel sleeve (83) is 5-10 mm smaller than that of the energy consumption rod (82); and the high-viscoelasticity rubber (84) is filled in a gap between the steel sleeve (83) and the energy consumption end plate (81).