目前的堆载预压工程设计中,通常假定软土的固结系数在加载过程中为常数。本文从实际工程出发,利用现场实测的孔压资料,以砂井固结理论和太沙基一维固结理论为基础,反演得出Ch、Cv随有效应力变化关系图,发现Ch、Cv在超过初始有效应力的某一压力值附近有较大的变化,由此认为软土的固结系数在加载过程中不宜视为常数,并且进一步探讨了固结系数陡变的原因。 In the current design of surcharge preloading engineering, it is usually assumed that the consolidation coefficient of soft soil is constant during the loading process. Based on the actual measured pore pressure data, based on the theory of sand well consolidation and one-dimensional consolidation of terbutaline, the paper deduces the relation curves of Ch and Cv with effective stress, and finds that Ch, Cv Therefore, it is considered that the consolidation coefficient of soft soil should not be regarded as a constant during the loading process, and the reason of the sudden change of consolidation coefficient is discussed further.