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农村建造沼气池一般采用脆性材料。脆性材料抗拉强度较低。容积较大的沼气池某些受拉部位(如拱壳池盖边缘构件;地下水位以下的池底平板等)计算拉应力较大,必须采用钢筋混凝土。在广大农村钢筋来源比较困难,要求采用钢筋既脱离实际,又增加造价、不利普及推广。我国江南各省农村盛产竹材,利用竹筋代替筋钢使用,是农村建池解决抗拉材料的现实有效途径。
Biogas digesters in rural areas generally use brittle materials. Brittle materials have low tensile strength. For some large-scale biogas digesters, some tensile sites (such as the edge components of the arch shell and pool cover; floor slab below the groundwater level, etc.) must have high tensile stress and must be reinforced concrete. In the vast rural areas, the sources of reinforcing bars are more difficult, and the use of steel bars is not only practical, but also increases the cost and is not conducive to popularization and promotion. China’s rural areas in the provinces of Jiangnan are rich in bamboo materials, and the use of bamboo ribs instead of gluten steel is a practical and effective way to solve the tensile materials in rural areas.