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本文用极限平衡法(屈服线理论)推导了钢筋砼圆板在线性分布荷载(静水压力)作用下的极限强度上限解,并提出了实用的简化公式。该公式与均布荷载下的公式相同,仅荷载集度须以线性分布荷载的平均集度代替。比较表明,采用简化公式计算引起的误差最大不超过3%,在工程计算所允许的范围内。
In this paper, the limit equilibrium method (yield line theory) is used to derive the upper limit solution of the ultimate strength of a reinforced concrete circular plate subjected to a linear distributed load (hydrostatic pressure), and a practical simplified formula is proposed. This formula is the same as the formula under uniform load, and only the load concentration must be replaced by the average concentration of the linear distributed load. The comparison shows that the error caused by the use of the simplified formula calculation does not exceed 3%, which is within the allowable range of engineering calculations.