基于Gunary模型的侧限条件下土体结构性参数研究  

Study on Soil Structural Parameters under Confined Compression Condition Based on Gunary Model

作　　者：孔洋[1,2] 黄雪峰[3,4] 阮怀宁[1,2] 朱珍德[1,2] 石崇[1,2] KONG Yang HUANG Xuefeng RUAN Huaining ZHU Zhende SHI Chong(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing 210098, China Department of Architectural Engineering,Logistical Engineering University, Chongqing 401311, China Chongqing Key Laboratory of Geomechanics and Geoenvironmental Protection, Logistical Engineering University, Chongqing 401311, China)

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098 [3]后勤工程学院建筑工程系,重庆401311 [4]后勤工程学院岩土力学与地质环境保护重庆市重点实验室,重庆401311

出　　处：《防灾减灾工程学报》2016年第4期520-527,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家科技支撑计划课题(2013BAJ06B00);陕西省科技统筹创新工程计划课题(2012KTDZD03-04)资助

摘　　要：土体的结构性参数研究是岩土工程的难点和重点。利用室内控制应力与控制应变的侧限压缩固结试验,基于Gunary模型应力—应变关系形式与割线模量分析方法构建了土体在侧限压缩条件下形式简单、便于运用的单变量结构性参数模型。通过试验值与计算值的对比分析,得到基于应变考虑的结构性参数计算值与应力的关系符合双参数线型倒数函数形式,基于应力考虑的结构性参数计算值与应变的关系符合二次多项式形式。同时,验证了用Gunary模型研究侧限条件下土体结构性参数的合理性。The study of soil structural parameters is an important and difficult research content in geotechnical engineering.Some stress-controlled and strain-controlled confined compression tests are carried out to investigate soil structural parameters.The new stress-strain relation representing formula,the Gunary model,and the secant modulus method are used.A simplified and applicable single variable soil structural parameter model under confined condition has been given.Based on the comparison between laboratory tested values and calculated values,the authors prove the strain-considered structural parameter calculated values with stress,and the stress-considered structural parameter calculated values with strain separately conform to the quadratic polynomial and the two-parameter linear reciprocal function form,and demonstrate the rationality of the Gunary model to study soil structural parameters.

关 键 词：应力—应变关系 Gunary模型 结构性参数 侧限压缩 割线模量 

分 类 号：TU43[建筑科学—岩土工程]