摘要
为研究饱和重塑黄土液化过程中的孔压增长规律,通过设定的试验方案,使用动三轴试验研究了黏粒含量、干密度、固结围压、动应力比和振动频率的影响。结果表明:黄土液化和砂土液化在液化过程中的孔压发展规律不同,黄土液化孔压增长具有特殊性;针对已有孔压模型对不同土性使用的局限性,对不同因素下黄土液化孔压增长进行归纳分析,得到考虑不同因素的孔压增长模型;最后对孔压增长模型的适用性和应用型进行了分析、验证。
In order to study the pore pressure growth of saturated remolded loess during liquefaction, dynamic triaxial test was used to investigate the effects of clay content, dry density, consolidation confining pressure, dynamic stress ratio and vibration frequency. The results show that the pore pressure development rules of loess liquefaction and sand liquefaction are different,the pore pressure increase of loess liquefaction is special. Aiming at the limitations of the existing pore pressure model for different soil properties, the pore pressure growth of loess liquefaction under different factors was summarized and analyzed, pore pressure growth model considering different factors is obtained. Finally, the applicability and applicability of the model are analyzed and verified.
作者
刘建民
邱月
郭婷婷
宋文智
LIU Jian-min;QIU Yue;GUO Ting-ting;SONG Wen-zhi(Shandong Earthquake Agency,Jinan 250014,China;State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao 266590,China;China MCC20 Group Corp. Ltd,Shanghai 201999,China)
出处
《科学技术与工程》
北大核心
2019年第19期226-232,共7页
Science Technology and Engineering
基金
国家自然科学基金青年基金(51809160)
山东省自然科学基金(ZR2014DQ022,ZR201702160366)
山东省地震局青年基金(JJ1806Y)资助
关键词
孔压增长
动三轴试验
饱和重塑黄土
归一化孔压模型
土性参数
试验参数
pore pressure growth
dynamic triaxial test
saturated remolded loess sample
normalization pore pressure model
soil parameter
test parameters
