CN209942038U - Bamboo laminated wood up-down splicing beam - Google Patents
Bamboo laminated wood up-down splicing beam Download PDFInfo
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- CN209942038U CN209942038U CN201920291214.7U CN201920291214U CN209942038U CN 209942038 U CN209942038 U CN 209942038U CN 201920291214 U CN201920291214 U CN 201920291214U CN 209942038 U CN209942038 U CN 209942038U
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Abstract
The utility model discloses a amalgamation roof beam about bamboo laminated wood, including upper beam (1), underbeam (2), round steel round pin (3), circle bamboo tenon (4) and glue film (5), wherein: the upper beam (1) is located at the top of the spliced beam, the lower beam (2) is located at the bottom of the spliced beam, tenons arranged along the beam length direction at equal intervals are arranged at the bottom of the upper beam (1), clamping grooves matched with the distribution positions of the tenons are formed in the top of the lower beam (2), round steel pins (3) are vertically implanted into the tenons of the upper beam (1) and the clamping grooves of the lower beam (2), round bamboo tenons (4) are vertically implanted into the upper beam (1) and the lower beam (2), and the glue layer (5) is located in the middle of the upper beam (1) and the lower beam (2). The utility model has the advantages that: the composite material breaks through the bottleneck of developing and utilizing the original bamboo, realizes the efficient and reasonable utilization of bamboo resources, has the characteristics of light weight, high strength, high rigidity, good durability, good ductility and the like, and can be applied to compression or bending members in bamboo-wood structure buildings.
Description
Technical Field
The utility model belongs to building structure field, concretely relates to integrated material amalgamation roof beam component of bamboo that modern bamboo structure house, timber structure house and bamboo timber structure house used.
Background
China bamboo resources are very rich, and the bamboo products and the processing level thereof are the first of world bamboo producing countries no matter the planting quantity, the area and the storage quantity. The bamboo has the advantages of high strength, good toughness, wear resistance, straight grain, elegant color and the like, has various excellent characteristics of hard broad-leaved trees, and is an ideal material in the building industry. The bamboo wood also has the characteristics of short production period and strong reproducibility. The development and utilization of bamboo resources, namely replacing wood with bamboo, is one of effective ways for relieving the supply and demand contradiction of wood.
The adoption of bamboo to construct houses has a long history. Although the building using the raw material bamboo can produce certain artistic and architectural effects, the building is feared to be difficult to become a main structural material and is widely applied in the modern building industry. The reasons for this are: (1) the original bamboo pole has a single geometric shape, so that the building form is monotonous; (2) geometric irregularities in the raw materials result in waste and are not suitable for modern construction procedures; (3) the nodes are very complex, so that unreliable connection or insecure connection is often caused, and the comfort level of the building is seriously influenced; (4) the original bamboo has serious anisotropy and extremely low transverse strength; (5) although a single bamboo rod can bear the dead weight, the diameter of a single raw material is limited, and a plurality of round bamboos are bound into a bundle as a structural load-bearing material, so that the construction difficulty is increased; under the condition of no treatment, the bamboo is easy to be damaged by worms, rotten and mildewed.
The bamboo integrated material is a difficult problem in the wide bamboo production area, and is characterized in that the bamboo integrated material is obtained by processing the fast-growing and short-period moso bamboo into bamboo chips with a certain specification, drying the bamboo chips until the moisture content is 8-12%, and then gluing the bamboo chips in the same direction into the specification material with a rectangular cross section by using an adhesive, and has the characteristics of high elastic modulus, high mechanical strength and easiness in processing. Compared with the original bamboo beam, the vertically spliced bamboo laminated wood beam has higher bearing capacity, better deformation performance and more excellent ductility, is an important way for effectively solving and restricting the development of ecological and environment-friendly bamboo-wood structural buildings, and has very wide market application prospect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose that will solve aims at breaking through the bottleneck that former bamboo development utilized, widens the application of bamboo field, overcomes former bamboo roof beam bearing capacity and hangs down, the ductility is poor and shortcoming such as deformability is poor, provides a mechanical properties is good, low cost and simple structure's bamboo integrated material amalgamation roof beam from top to bottom, can be applied to in the bamboo wood structure building as floor roof beam and roof beam.
The utility model discloses in, the upper and lower amalgamation roof beam of bamboo laminated timber includes five parts of entablature, underbeam, circle steel round pin, circle bamboo tenon, glue film. Wherein: the upper beam is positioned at the top of the spliced beam, the lower beam is positioned at the bottom of the spliced beam, the round steel pin is vertically implanted into the tenon of the upper beam and the clamping groove of the lower beam, the round bamboo tenon is vertically implanted into the upper beam and the lower beam, and the glue layer is positioned in the middle of the upper beam and the lower beam.
The basic principle of the utility model is as follows: the upper beam is arranged on the top surface of the spliced beam and mainly bears pressure; the lower beam is arranged on the bottom surface of the spliced beam and mainly bears tension; the round steel pin is vertically implanted into the tenon of the upper beam and the clamping groove of the lower beam and mainly bears shearing force; the round bamboo tenon is vertically implanted into the upper beam and the lower beam and mainly bears shearing force; the upper beam tenon is embedded into the lower beam clamping groove and mainly bears shearing force; the glue layer located between the upper beam and the lower beam mainly bears shearing force.
The upper beam and the lower beam are equal in height, the upper beam and the lower beam are tightly attached, and the interface is coated with a glue layer.
And roughening the viscose interface of the upper beam and the lower beam, wherein the chiseling depth is 1-2 mm, the chiseling mark is about 20mm, and the cutting rate is not lower than 80%.
The utility model discloses a beam structure, including the entablature, the entablature bottom set up the tenon of following the long direction equidistance of roof beam and arranging, the underbeam top set up with tenon distribution position assorted draw-in groove, the height of entablature tenon equals the degree of depth of underbeam draw-in groove, the tenon width is greater than the draw-in groove about 1.0mm ~ 1.5mm, the inclination of tenon and the inclination of draw-in groove match each other.
The round steel round pin is vertically implanted into the tenon of the upper beam and the clamping groove of the lower beam, the diameter of the round steel round pin is 1.0-1.5 mm larger than the pre-drilled hole of the tenon and the clamping groove, and the implantation depth is 5 times of the diameter of the round steel round pin and 50mm larger value of the diameter of the round steel round pin.
The diameter of the round bamboo tenon is about 1.0-1.5 mm larger than the diameter of the pre-drilled hole of the upper beam and the lower beam, and the implantation depth is 6 times of the diameter of the round bamboo tenon and is 60mm larger than the diameter of the round bamboo tenon.
The glue layer is made of epoxy resin glue, urea-formaldehyde resin glue or phenolic resin glue.
The utility model discloses widen the application of former bamboo, overcome some well-known shortcomings of former bamboo roof beam, the integrated material of bamboo amalgamation type roof beam has following effect that is showing from top to bottom:
(1) the product added value and the technical content of the original bamboo in the traditional field are low, and the bamboo is processed into the bamboo laminated wood to be applied to the engineering field, so that the application field of the bamboo can be greatly widened, and the method is beneficial to increasing the income of vast bamboo producing areas.
(2) The round steel pin and the round bamboo tenon are arranged on the neutral axis of the integrated bamboo lumber splicing beam, so that the advantage of high shearing resistance and bearing capacity of the round steel pin and the round bamboo tenon can be fully exerted, and the mechanical property and ductility of the splicing beam component are greatly improved.
(3) The glue layer arranged at the interface of the upper beam and the lower beam can fully exert the higher shearing-resistant bearing capacity of the adhesive, and can reduce the relative slippage of the upper beam and the lower beam, thereby improving the initial bending-resistant bearing capacity of the spliced beam.
(4) Compared with masonry structures and reinforced concrete structures, the production and processing processes of the bamboo laminated wood spliced beam have small environmental pollution, the use amount of non-renewable resources is reduced, and the energy consumption in the use process is reduced; compared with a wood structure, the composite material has the advantages of larger bearing capacity, stronger spanning capacity, and better ductility and self-recovery capacity.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a schematic structural view of an upper beam implemented by the present invention
FIG. 3 is a schematic structural view of a lower beam of the present invention
In the figure: 1. upper beam, 2, lower beam, 3, round steel pin, 4, round bamboo tenon, 5, glue layer
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in figure 1, the utility model provides a bamboo laminated wood split beam component, including five parts of upper beam, underbeam, circle steel round pin, circle bamboo tenon, glue film. As shown in fig. 2, tenons arranged at equal intervals along the length direction of the beam are arranged along the bottom of the upper beam; as shown in fig. 3, the top of the lower beam is provided with a clamping groove matched with the distribution position of the tenon; pre-drilling circular holes in the tenon and the clamping groove respectively, wherein the diameter of each drilled hole is about 1.0-1.5 mm smaller than that of the round steel pin, the depth of each drilled hole is 5 times of the diameter of the round steel pin and 50mm larger than that of the round steel pin, and the round steel pin is pressed into the clamping groove of the lower beam; pre-drilling a circular hole along the length direction of the beam, wherein the diameter of the drilled hole is about 1.0-1.5 mm smaller than that of the circular bamboo tenon, the depth of the drilled hole is 6 times of the diameter of the circular bamboo tenon and 60mm larger value, and the circular bamboo tenon is pressed into the lower beam; coating an adhesive on the bottom surface of the upper beam, the top surface of the lower beam, the tenon and the clamping groove so as to ensure the adhesive force between the upper beam and the lower beam; and tightly splicing the upper beam and the lower beam, wherein the pressing temperature of the adhesive between interfaces is 15-35 ℃, the pressure is 1.5-3 MPa, and the upper beam and the lower beam are placed in a constant temperature and humidity chamber for curing for 10-15 days.
Example 1: the method comprises the steps of taking bamboo laminated wood 50mm wide and 120mm high as an upper beam and a lower beam, arranging clamping grooves at equal intervals along the length direction of the beam, wherein the distance between the clamping grooves is 200mm, the upper width of each clamping groove is narrow, the height of each clamping groove is 15mm and the width of each clamping groove is 9mm, the depth of each clamping groove is 15mm, tenons matched with the positions of the clamping grooves are arranged on the bottom surface of the upper beam, the width of each tenon is 1.0-1.5 mm larger than that of each clamping groove, the height of each tenon is 15mm, the diameter and the length of each round steel pin are 8mm and 100mm respectively, the distance between round bamboo tenons is 200mm, the diameter and the length of each round bamboo tenon are 10mm and 120mm respectively, the upper beam and the lower beam2. Finished bamboo laminated woodThe height of the split beam is 240mm, the width of the split beam is 50mm, and the length of the split beam is 3000 mm.
Claims (7)
1. An upper-lower spliced beam of a bamboo laminated material comprises an upper beam (1), a lower beam (2), round steel pins (3), round bamboo tenons (4) and a glue layer (5), wherein the upper beam is provided with a plurality of vertical splicing holes; the upper beam (1) is located at the top of the spliced beam, the lower beam (2) is located at the bottom of the spliced beam, tenons arranged at equal intervals are arranged at the bottom of the upper beam (1), clamping grooves matched with the sizes and the distribution positions of the tenons are formed in the top of the lower beam (2), round steel pins (3) are vertically implanted into the tenons of the upper beam (1) and the clamping grooves of the lower beam (2), round bamboo tenons (4) are vertically implanted into the upper beam (1) and the lower beam (2), and the glue layer (5) is located in the middle of the upper beam (1) and the lower beam (2).
2. The upper and lower split beam of bamboo integrated material as claimed in claim 1, wherein the upper beam (1) and the lower beam (2) have the same height, the upper beam (1) and the lower beam (2) are closely attached, and the interface is coated with the glue layer (5).
3. The vertically spliced bamboo laminated timber beam as claimed in claim 1, wherein the adhesive interface between the upper beam (1) and the lower beam (2) is chiseled to a depth of 1-2 mm, the chiseling mark is about 20mm, and the cutting rate is not less than 80%.
4. The vertically-spliced bamboo laminated wood beam as claimed in claim 1, wherein tenons are arranged at the bottom of the upper beam (1) at equal intervals along the length direction of the beam, clamping grooves matched with the distribution positions of the tenons are arranged at the top of the lower beam (2), the height of the tenon of the upper beam (1) is equal to the depth of the clamping groove of the lower beam (2), the width of the tenon is 1.0-1.5 mm larger than the clamping groove, and the inclination angle of the tenon is matched with that of the clamping groove.
5. The vertically-spliced bamboo laminated wood beam as claimed in claim 1, wherein the round steel pin (3) is vertically implanted into the tenon of the upper beam (1) and the clamping groove of the lower beam (2), the diameter of the round steel pin (3) is about 1.0mm to 1.5mm larger than the pre-drilled hole of the tenon of the upper beam (1) and the clamping groove of the lower beam (2), and the implantation depth is 5 times and 50mm larger than the diameter of the round steel pin (3).
6. The vertically-spliced bamboo integrated timber beam as claimed in claim 1, wherein the round bamboo tenon (4) is vertically implanted into the upper beam (1) and the lower beam (2), the diameter of the round bamboo tenon (4) is about 1.0mm to 1.5mm larger than the pre-drilled holes of the upper beam (1) and the lower beam (2), and the implantation depth is 6 times and 60mm larger than the diameter of the round bamboo tenon (4).
7. The upper and lower split beam of the bamboo laminated wood as claimed in claim 1, wherein the glue layer (5) is epoxy resin glue, urea-formaldehyde resin glue or phenolic resin glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291214.7U CN209942038U (en) | 2019-03-01 | 2019-03-01 | Bamboo laminated wood up-down splicing beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291214.7U CN209942038U (en) | 2019-03-01 | 2019-03-01 | Bamboo laminated wood up-down splicing beam |
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| Publication Number | Publication Date |
|---|---|
| CN209942038U true CN209942038U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920291214.7U Expired - Fee Related CN209942038U (en) | 2019-03-01 | 2019-03-01 | Bamboo laminated wood up-down splicing beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723185A (en) * | 2019-03-01 | 2019-05-07 | 南京林业大学 | A kind of upper and lower joggle beam of bamboo wood |
-
2019
- 2019-03-01 CN CN201920291214.7U patent/CN209942038U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723185A (en) * | 2019-03-01 | 2019-05-07 | 南京林业大学 | A kind of upper and lower joggle beam of bamboo wood |
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| CF01 | Termination of patent right due to non-payment of annual fee |