CN102744765A

CN102744765A - Bamboo laminated wood and straw composite beam or column member

Info

Publication number: CN102744765A
Application number: CN2012102553575A
Authority: CN
Inventors: 李海涛; 苏靖文; 李淑恒; 郭永丽
Original assignee: Nanjing Forestry University
Current assignee: Zhejiang Honggaoliang Wood Co Ltd
Priority date: 2012-07-18
Filing date: 2012-07-18
Publication date: 2012-10-24
Anticipated expiration: 2032-07-18
Also published as: CN102744765B

Abstract

The invention discloses a bamboo laminated wood and straw composite beam or column member. The circumference of the straw is surrounded by a bamboo laminated wood. When the section width h is two times or more than two times the section width b, the straw bamboo laminated wood and straw composite beam or column member can be used as a beam member. The bamboo laminated wood and straw composite beam or column member for building houses has the advantages of favorable seismic performance, low carbon, environment friendliness and sustainable development. The bamboo laminated wood and straw composite beam or column member can be used for producing bending or pressing resistant members in various structure systems and is especially applied to seismic bamboo laminated wood and straw houses. The bamboo laminated wood and straw composite beam or column member has important significance for relieving the pressure of shortage of resources such as wood, cultivated land and coal and biological environment deterioration. The bamboo laminated wood beam or column member is used as a raw material of the bending or pressing resistant members, so that the extremely-scarce forest resources and the environment pollution caused by straw burning can be avoided; and meanwhile, extra input for farmers is added, and thus the bamboo laminated wood and straw composite beam or column member is a bright path for benefiting the nation, people, agriculture and business.

Description

A kind of bamboo wood integrated timber stalk composite beam or post member

Technical field

The present invention relates to building materials technology field, in particular a kind of bamboo wood integrated timber stalk composite beam or post member.

Background technology

China's stalk resource is abundant, shows that according to interrelated data China produces 700,000,000 tons of agricultural crop straws every year approximately.If annual have 10% stalk to be used for making sheet material, then can reduce felling 7000 ten thousand stere timber, be equivalent to reproduce in 5 years a Daxing'an Mountainrange.Change the quickening of economic development mode process along with country; The development low-carbon economy is as the quick propelling of country; To severe further to wildwood with the protective policy of artificial forest cultivation, and the quantity delivered of timber and wood-based plate will be outstanding further to the contradiction between its demand, be that the development space of the wood-based plate of raw material will greatly reduce with timber; And the release of stalk plate provides direction for effectively protecting forest resources.

China abounds with bamboo, and owning amount and quality all occupy first place in the world.Renewable, the degradable of bamboo, general 3-5 can be become a useful person.The tensile strength of bamboo wood is about 2 times of timber, and compression strength is about 1.5 times of timber, and the specific strength of bamboo wood is higher than common wood, structural steel, aluminium alloy, concrete etc.Bamboo wood has elasticity and toughness preferably, and deformability is strong.Replace concrete, steel or clay brick etc. to build the house with bamboo wood and stalk compound material; Meet great task---the fundamental requirement of " Green Development; build a resource-conserving and environment-friendly society " that " 12 " planning is disposed, also meet the major fields and the preferential theme of saving energy and reduce the cost, developing the agricultural-forestry biomass resource that " National Program for Medium-to Long-term Scientific and Technological Development (2006-2020) " confirms.

Bamboo wood integrated timber stalk beam or post member market prospects are wide.Along with the high speed development of China's Wood member industry, a under-supply principal element that more and more becomes the Wood member development of restriction China of wood raw material.The substitution material of seeking timber becomes China's Wood member development urgent problem.Have super quality and competitive price and use, environmental protection, the low pollution, the bamboo wood integrated timber stalk beam or the post member of characteristics such as reusable edible come the replacing wood raw material that the vast market space must be arranged.

Summary of the invention

Technical problem to be solved by this invention is that the deficiency that is directed against prior art provides a kind of bamboo wood integrated timber stalk composite beam or post member.

Technical scheme of the present invention is following:

A kind of bamboo wood integrated timber stalk composite beam or post member, the stalk periphery is surrounded by the bamboo wood integrated timber; When depth of section h be cross-sectional width b more than 2 times and 2 times the time, can do beam.

Described bamboo wood integrated timber stalk composite beam or post member, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is identical or different.

Described bamboo wood integrated timber stalk composite beam or post member, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is two or three or four.

Described bamboo wood integrated timber stalk composite beam or post member, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is 3 o'clock, middle bamboo wood integrated timber erects.

Utilize bamboo wood integrated timber stalk beam or post member to build the house, anti-seismic performance is good, low-carbon (LC) environmental protection, sustainable development.At present, the residential housing of China mainly is a brick mix structure, uses a large amount of clay products, causes China's land resource to fall sharply, and the heavy damage ecological balance, national per capita area of cultivated farmland be 1.3 mu of less thaies, far below world's level of 4.8 mu per capita.In this case, turn waste into wealth, it is very significant utilizing combination bamboo woods such as part straw, wheat straw to process construction material.

Utilize bamboo wood integrated timber stalk beam or post member can process bending resistance or compression member in all kinds of structural systems, especially be applied in the antidetonation type bamboo wood integrated timber stalk house.Pressure to alleviating the shortage of resources such as China's timber, arable land, coal and the deterioration of the ecological environment is significant.

With these bamboo wood integrated timber beams or post member raw material as bending resistance or compression member; The most deficient forest reserves of China both can have been protected; Can avoid crop straw burning to cause environmental pollution again, increase additional income to the peasant simultaneously, thus be one benefit the nation and the people, Li Nongli merchant's bright approach.

Description of drawings

Fig. 1 is the bamboo wood integrated timber stalk composite beam or the post member of two-layer bamboo chip;

Fig. 2 is the bamboo wood integrated timber stalk composite beam or the post member of three layers of bamboo chip;

Fig. 3 is the bamboo wood integrated timber stalk composite beam or the post member of three layers of bamboo chip (intermediate layer erects);

Fig. 4 is the bamboo wood integrated timber stalk composite beam or the post member of four layers of bamboo chip;

Fig. 5 is bamboo wood integrated timber stalk composite beam or the post member that the bamboo chip number of plies is different up and down;

1 is the bamboo integration plate material, and 2 is stalk, and b is a cross-sectional width, and h is a depth of section.

The specific embodiment

Below in conjunction with specific embodiment, the present invention is elaborated.

Bamboo wood integrated timber stalk composite beam or post member be with bamboo wood integrated timber and rural area discarded agricultural crop straw---straw, straw, cornstalk, sorghum stalk, beans stalk, capsicum stalk, rape stalk, flax stalk, reed stalk, cotton stalk etc. are primary raw material; With the adhesive is adhesive; Know-whies such as comprehensive physics, chemistry, electric, mechanical, hydraulic pressure; Utilize high pressure, mold pressing plant equipment; The stalk fibre and the adhesive that will pass through after milling is handled are mixed, and various high-quality bending resistances or compression member are made in extrusion forming in metal die.

The purpose of this invention is to provide a kind of bamboo wood integrated timber stalk composite beam or post member that can be applied to the structure stress system, overcome the shortcoming of prior art scheme, but replacing wood and multiple light building material, the bending resistance and the compression member of suitable preparing various kinds structural system.

In the present invention, bamboo wood integrated timber stalk composite beam or post are mainly formed (sectional view is seen Fig. 1 to Fig. 5) by bamboo wood integrated timber, adhesive and stalk (comprising straw, straw, cornstalk, sorghum stalk, beans stalk, capsicum stalk, rape stalk, flax stalk, reed stalk, cotton stalk etc.).

Preparation technology is following: the beam of preparation bamboo integration plate material 1, the compound heavy-gauge sheeting 2 of bamboo wood integrated timber stalk (gas is done, separated, broken, dry, sorting) → applying glue → mat formation → precompressed → hot pressing → cooling → cutting edge → sanding → semi-finished product → cut on request corresponding size or post member → be stained with the compound beam and column finished product of bamboo wood integrated timber plate → bamboo wood integrated timber stalk at two cut surfaces; Also can make bamboo wood integrated timber plate and stalk beam or post member respectively, then material integrated timber plate cut into corresponding size and adhere to stalk beam or four faces of post member, form composite component.This manufacturing process belongs to conventional manufacturing approach, repeats no more.

The stalk periphery of this kind NEW TYPE OF COMPOSITE sheet material is surrounded by the bamboo wood integrated timber, according to the difference of the bamboo wood integrated timber bamboo chip number of plies and arrangement mode, can process multi-form composite beam or post member, sees Fig. 1 to Fig. 5.When depth of section h be cross-sectional width b more than 2 times and 2 times the time, can do beam.If adopt the ecological adhesive of the MDI that does not contain formaldehyde, just can produce the bamboo wood integrated timber stalk composite beam or the post member that do not contain formaldehyde.

The arrangement mode of bamboo chip and the number of plies all can change as required in bamboo wood integrated timber stalk composite beam or the post member, can be two-layer, three layers, four layers, also can be multilayer more.The scope of stalk is more extensive, can relate to the leaf, stalk, stem of all plants, crops etc., also comprises all wood materials such as discarded timber and chip thereof certainly.

When as beam, the bamboo wood integrated timber thickness of both sides can suitably reduce, and sees Fig. 5.

Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.

Claims

1. bamboo wood integrated timber stalk composite beam or post member is characterized in that the stalk periphery is surrounded by the bamboo wood integrated timber; When depth of section h be cross-sectional width b more than 2 times and 2 times the time, can do beam.

2. bamboo wood integrated timber stalk composite beam according to claim 1 or post member is characterized in that, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is identical or different.

3. bamboo wood integrated timber stalk composite beam according to claim 1 and 2 or post member is characterized in that, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is two or three or four.

4. bamboo wood integrated timber stalk composite beam according to claim 3 or post member is characterized in that, the number of plies of the bamboo wood integrated timber that each bread of stalk periphery encloses is 3 o'clock, and middle bamboo wood integrated timber erects.