东南大学学报（自然科学版）2012，Vol.42Issue(3)：531-535,5.DOI:10.3969/j.issn.1001-0505.2012.03.027
崇启大桥接线工程下部软土孔隙结构分析
Pore structure characteristics analysis of soft soil under connection project of Chongqi Bridge
摘要
Abstract
Mercury intrusion porosimetry (MIP) was adopted to study the pore structure characteristics of undisturbed soil specimens sampled from different depths and rheological specimen at a certain depth under the connection project of Chongqi Bridge. Test results indicate that pore structure of the soft soil mainly consists of interparticle pores whose entrance pore diameter varies between 0.02 and 5 μm. Corresponding peak values of such kind of micropores for undisturbed soil specimens at the depth of 21, 26 and 30 m are 0. 865, 0. 351 and 1. 3 μm, respectively. Then there is a small part of intracluster and intercluster pores whose entrance pore diameter varies between 5 and 200 μm, and their structure is of multilevel characteristics. Pore structure of the soft soil is also influenced by its sample depth. There are few large intracluseter or intercluster pores in the 30 m depth soil specimen. Pore structure of the undisturbed soil specimen is redistributed after consolidation and creep deformation. Most of the large pores inside soft soil diminish, and the peak value of the entrance pore diameter corresponding to the part of micropore becomes smaller. Furthermore, small quantities of intra-particle pores are found in the rheological specimen.关键词
海陆交互相沉积土/软土/孔隙结构/压汞试验/流变试验Key words
interactive marine and terrestrial deposit/ soft soil/ pore structure/ mercury intrusion porosimetry/ rheological test分类
建筑与水利引用本文复制引用
刘志彬,刘松玉,居俊,周伯明..崇启大桥接线工程下部软土孔隙结构分析[J].东南大学学报（自然科学版）,2012,42(3):531-535,5.基金项目
国家自然科学基金资助项目(40802065)、江苏省交通厅资助项目(09Y33)、教育部博士点新教师基金资助项目(20100092120049). （40802065）
