A kind of preparation method of bamboo beam and bamboo beam prepared by this method

A technology of beams and bamboo strips, applied in joists, girders, trusses and other directions, can solve the problems of flammable wooden beams, overall collapse of the building, low load capacity, etc. effect of ability

Active Publication Date: 2014-10-22
浙江安吉双虎竹木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be seen that most of the crossbeams in the prior art are made of wood or steel, and the steel crossbeam has a strong load capacity, but it is easy to cause the overall collapse of the building when it is in danger of fire; although the wooden crossbeam will not cause the overall collapse of the building when it is in danger of fire, Collapses, but wooden beams are more flammable than steel beams and have lower load capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: a kind of bamboo beam preparation method, it comprises the steps successively:

[0049] (1) Select bamboo and saw it off, the density of the selected bamboo strips is 0.75g / cm 3 , the length of each section of bamboo after sawing is 1.5m;

[0050] (2) Punching and initial planing, making bamboo strips from the bamboo treated in step (1) and removing bamboo green, bamboo yellow, and bamboo film;

[0051] (3) Carbonization: Put the bamboo strips into the carbonization furnace, raise the temperature in the furnace to 120°C within 10 minutes, and raise the air pressure in the furnace to 0.20Mpa within 10 minutes, and then keep the temperature and pressure for 130 minutes; after that In the case of heat preservation, reduce the air pressure to 0.18Mpa and keep heat and pressure for 25 minutes;

[0052] (4) Drying, the humidity in the drying room is controlled to 75%, the temperature is 50°C, and the time is 1 day, so that the moisture content is reduced to 11...

Embodiment 2

[0060] Embodiment 2: a kind of bamboo beam preparation method, it comprises the following steps successively:

[0061] (1) Select bamboo and saw it off, the density of the selected bamboo strips is 1.2g / cm 3 , the length of each section of bamboo after sawing is 3m;

[0062] (2) Punching and initial planing, making bamboo strips from the bamboo treated in step (1) and removing bamboo green, bamboo yellow, and bamboo film;

[0063] (3) Carbonization: Put the bamboo sticks into the carbonization furnace, raise the temperature in the furnace to 150°C within 10 minutes, and raise the air pressure in the furnace to 0.28Mpa within 10 minutes, and then keep the temperature and pressure for 200 minutes; In the case of heat preservation, reduce the air pressure to 0.22Mpa and keep heat and pressure for 35 minutes;

[0064] (4) Drying, the humidity in the drying room is controlled to 90%, the temperature is 60°C, and the time is 3 days, so that the moisture content is reduced to 6%; ...

Embodiment 3

[0072] Embodiment 3: a kind of bamboo beam preparation method, it comprises the following steps successively:

[0073] (1) Select bamboo and saw it off, the density of the selected bamboo strips is 0.9g / cm 3 , the length of each piece of bamboo after sawing is 2m;

[0074] (2) Punching and initial planing, making bamboo strips from the bamboo treated in step (1) and removing bamboo green, bamboo yellow, and bamboo film;

[0075] (3) Carbonization: put the bamboo strips into the carbonization furnace, raise the temperature in the furnace to 130°C within 10 minutes, and raise the air pressure in the furnace to 0.25Mpa within 10 minutes, and then keep the temperature and pressure for 160 minutes; after that In the case of heat preservation, reduce the air pressure to 0.20Mpa and keep heat and pressure for 30 minutes.

[0076] (4) Drying, the humidity in the drying room is controlled to be 80%, the temperature is 55°C, and the time is 2 days, so that the moisture content of the ...

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PUM

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Abstract

The invention relates to a material which is used for supporting buildings in the field of architectural engineering and particularly relates to a method for producing a bamboo cross beam and the bamboo cross beam produced through the method. According to the technical scheme, the method comprises steps of selecting and sawing bamboos; punching and primarily planing bamboos; conducting charring; conducting drying; conducting finish plane; conducting splice, wherein bamboo splints are spliced mutually through an adhesive along a length direction and a width direction, placed in a hot press and subjected to hot pressing to form veneers; conducting lamination, wherein veneers are laminated vertically through the adhesive in accordance with requirements, placed in the hot press and subjected to hot pressing to form an integral plate, and the lengths of the bamboo splints of every veneer are in the same directions; and conducting cutting, wherein the integral plate is cut along the direction of the bamboo splints so as to form cross beams and cross beams have radians along the length direction of the bamboo splints. By the aid of the method, the bamboo cross beam has good fireproof performance and high loading capacity.

Description

technical field [0001] The invention relates to materials for supporting buildings in the field of engineering construction, in particular to a method for preparing bamboo beams and bamboo beams prepared by the method. Background technique [0002] The beams in the prior art, such as the wooden beams disclosed in the invention patent with the publication number CN101725181A and the wooden beams involved in the installation process thereof; The steel crossbeam involved in the new assembly structure of light steel vertical and crossbeams on the roof of the building; and the steel crossbeam involved in the disclosed steel frame building structure of the invention patent of CN1307159A as the publication number. [0003] It can be seen that most of the crossbeams in the prior art are made of wood or steel, and the steel crossbeam has a strong load capacity, but it is easy to cause the overall collapse of the building when it is in danger of fire; although the wooden crossbeam wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M3/08E04C3/12
CPCB27N1/00B27N3/002B27N3/02
Inventor 石国平
Owner 浙江安吉双虎竹木业有限公司
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