海堤下软基超孔隙水压力值的修正方法

当潮位的涨落引起上部堆载容重变化时，海堤下软基的超孔隙水压力将随潮位呈周期性变化．为了解软基的固结情况，必须对现场测试到的总孔隙水压力值减去静水压力后再进行潮位修正，即把任意时间任一潮位测得的超孔降水压力值修正到一个指定的同一潮位上，这样才能得到一个有规律性的观测曲线．本文提出了一种实用的修正方法，并在连云港庙岭围堰软基工程中应用，结果令人满意。

A Method for Revising Measurement Value of Excess Pore Water Pressure in Soft Foundation under Sea Embankment

Excess pore water pressure in soft foundation under sea embankment undergoes a cyclic variation due to the change in unit weight of upper accumulation with the tide level. To find out the consolidation situation of soft foundation, it is necessary to revise excess pore water pressure, that is, to convert the measurement value of excess pore water pressure at any time and at any tide position into the value at a certain given tide POsition. By so doing a regular measurement curve can be obtained. On the basis of the measurement of pore water pressure in soft foundation under cofferdam at Miaoling, Lianyungang, a practical revision method has been developed. The calculative results with this method is satisfactory.