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在工程实际中常遇到一些高梁或类似高梁的结构,如高水头下支墩壩的面版、船闸的闸墙、高桩台、高壩及隧洞衬砌等。这些結构的計算,如仍按一般材力或鋼筋混凝土断面計算的公式进行,将会导致較大誤差。根据弹性力学得知,当h/l=1/4时,即不能按普通公式計算,应根据彈性力学的公式来算,即当計算荷載已知时,把材料視如純彈性体进行应力分析,然后将超过許可应力部分,完全由鋼筋担負。
In engineering practice, we often encounter some sorghum or similar sorghum structures, such as the surface of the high head branch pier, ship lock gate, high piles, high dams and tunnel linings. Calculations of these structures, such as formulas that are still calculated based on general material forces or sections of reinforced concrete, will cause large errors. According to elastic mechanics, when h/l=1/4, it cannot be calculated according to the ordinary formula, and should be calculated according to the formula of elasticity mechanics. That is, when the calculated load is known, the material is regarded as pure elastomer for stress analysis. Then, the portion of the stress that exceeds the allowance will be completely borne by the reinforcement.