超孔隙水压力速效排水固结法在沿海地基处理中的应用

结合上海某工程地基处理,分析了沿海地区超孔隙水压力速效排水固结法的可行性,系统研究了其在沿海软土地基中的具体应用。通过试验和方案比选,论证了超孔隙水压力速效排水固结法在该地区的优势,并指出砂垫层铺设、土方回填、施打塑料排水板及强夯施工等应达到的技术要求与措施。检测结果表明,超孔隙水压力速效排水固结法明显地改善了软土层的排水固结过程,达到预期的加固效果,其技术可靠、经济合理、能够缩短工期,可以在沿海软土地区推广。

内蒙古河套灌区盐渍土持水特性的测定与分析

用压力排水法对氯化钠、氯化钙和碳酸氢钠盐渍土的持水特性进行了测定,结果表明,无论是氯盐土还是碳酸盐土其土水势绝对值都随含液量的减少而增大,同类盐渍土在含液量相同的情况下,土水势绝对值是随土壤溶液摩尔浓度增大而增大,并有很好的线性关系。

Analytics study on the problem of two holes having arbitrary shapes and arrangements in plane elastostatics

By using Schwarz alternating method, this paper presents asimplified alternating algorithm for the problems of two holes having arbitrary shapes and arrangements in an isotropic homogeneous linear elastic infinite region, and obtains stress and displacement fields for random times of iteration. After precision analysis it is found that the results for twenty times of iteration are of very high precision, and those with higher precision can be acquired if the iteration solving is further conducted. The comparison of the results from FEM further proves the reliability of the simplified alternating algorithm presented by this paper.