【摘要】 推导了一维稳定渗流条件下基坑内外被动区和主动区的水头计算公式,并分析了渗流对作用在围护结构上的水压力、土压力及侧压力的影响,结合算例讨论了渗流作用对围护结构稳定性的影响. 研究表明,渗流作用使得被动区和主动区作用在围护结构上的侧压力均减小,在地下水位较高的地区开挖基坑时应当考虑渗流作用的影响。更多还原

【Abstract】 Analytical formulas for calculating the water head in active and passive zones of a foundation pit were derived under the assumption that the seepage was one-dimensional and steady. The influence of seepage on water pressure, soil pressure and lateral pressure outing on retaining structure was studied. The seepage effect on the stability of retaining structure was discussed through numerical examples. It is shown that the lateral pressures of retaining structure in active and passive zones both decreased as a result of seepage effect and thus seepage should be considered in excavation.更多还原