水利学报2017，Vol.48Issue(4)：446-456,11.DOI:10.13243/j.cnki.slxb.20160385
考虑原位结构效应确定深厚覆盖层土体的动强度参数
Determination of liquefaction resistance of deep alluvial soils considering in-situ structure effects
摘要
Abstract
How to accurately determine the mechanical parameters of deep alluvial soils with strong structure is a difficult issue in construction of projects with deep alluvial soils.This paper focuses on the problem by studying how to determine the dynamic strength parameters through comprehensively considering the in-situ tests and the laboratory tests,which include three aspects in:(1)determining the basic dynamic strength of deep alluvial soils with in-situ tests;(2) determining the dynamic strength parameters under different vibration magnitude and consolidation stress conditions with laboratory tests and (3)extending the basic dynamic strength parameters to different magnitude and various consolidation stress conditions based on the results of laboratory tests.Field standard penetration tests and laboratory tests were carried out toward soils of a real deep alluvial layer,then dynamic strength parameters considering in-situ structure effect were determined with method mentioned above,which were compared with those determined by laboratory tests.These research results can provide the basis for seismic safety evaluation of foundation and embankment system,and can also be used as reference for similar projects关键词
深厚覆盖层/原位结构效应/动强度参数/现场试验/室内试验Key words
deep alluvial soils/in-situ structural effects/dynamic strength parameters/field tests/laboratory dynamic tests分类
建筑与水利引用本文复制引用
杨玉生,刘小生,赵剑明,温彦锋..考虑原位结构效应确定深厚覆盖层土体的动强度参数[J].水利学报,2017,48(4):446-456,11.基金项目
国家自然科学基金项目(51679264,51209234,51509272) （51679264,51209234,51509272）
国家重点基础研究发展计划暨973计划课题(2013CB036404) （2013CB036404）
国家科技支撑计划课题(2013BAB06B02) （2013BAB06B02）
水利部公益性行业科研专项经费项目(201501035) （201501035）
中国水科院科研专项(GE0145C092016) （GE0145C092016）
