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Test Research And Analysis On Mechanical Properties Of Phyllostachys Pubescens

Posted on:2012-05-16Degree:MasterType:Thesis
Country:ChinaCandidate:X LiFull Text:PDF
GTID:2232330374995874Subject:Structural engineering
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China has a history of ages in taking bamboo wood as a kind of building material, and ranks first in world rankings in bamboo resources reserves and bamboo biodiversity. Bamboo wood with wide raw material and fast regeneration owns good physical mechanical property, its specific strength and specific stiffness overtops rebar, it can be sawed and planed, so its processability is fine. Bamboo wood’s specific consumption is lower than rebar and concrete. Making deep research and utilization on bamboo wood, taking full advantage of it, and as a material of construction, applying it to the civil engineering have great significances in relieving the crisis of global building materials shortage, reducing deforestation, controlling the emission of greenhouse gases etc.Researches on bamboo wood mechanical property are the basis of application of the natural biologic composite material in Structural Components. At present, the scholars at home and abroad study this field on light of different standards which make the test results haven’t comparability. This thesis is to make experimental study on phyllostachys pubescens in Hunan area according to building-based bamboo wood physical mechanical property experimental method, and to test its tensile strength parallel to grain, then on the basis of which to probe bond performance between phyllostachys pubescens and concrete. The main research contents are followed:(1) strength test are made on128phyllostachys pubescens in the typical producing area—Hunan, to test their tensile strength parallel to grain. Contrasting the value of tensile strength parallel to grain between bamboo specimen which have node and haven’t node to analyze the bamboo node’s influences on bamboo wood tensile strength. At the same time, adopting oven drying method and receptivity method to measure test specimen’s moisture content, and to get the relation between the two groups, then to probe the feasibility of applying receptivity method to test moisture content. Analyzing specimen’s load deformation figure to calculate the modulus of elasticity of the specimen in this experiment, and to provide reference value for phyllostachys pubescens’modulus on tensile elasticity parallel to grain.(2) Making contrast test on two groups each of which owns64phyllostachys pubescens test specimen with tensile strength parallel to grain, to inspect different loading speed’s influences on specimen arrange grain tensile strength value, and understand the load capacity of bamboo wood in practical application; to inspect different specimen ends clamping way’s influences on specimen arrange grain tensile strength value, and to probe the feasibility of specimen string surface gripping.(3) Making pullout test on4groups each of which owns54bamboo reinforced concrete members, to know bamboo node, concrete strength and bamboo muscle embedding depth’s influences on reinforced concrete binding properties of bamboo. Making use of ANSYS to build bamboo reinforcement concrete bond-slip model, to make simulation analysis on specimen from bear load to destruction, and to make comparative analysis with test result.The above research results provide some references for Hunan phyllostachys pubescens wood’s application in building field.
Keywords/Search Tags:Phyllostachys pubescens, Tensile strength parallel to grain, Modulus ofelasticity, Bamboo wood, Bond-slip
PDF Full Text Request
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