岩土工程学报2025，Vol.47Issue(7)：1344-1353,10.DOI:10.11779/CJGE20240274
适用于黏土砂土统一本构模型的状态参量
State parameters applicable to unified model for clays and sands
摘要
Abstract
The state parameter is the key of the unified constitutive model for clays and sands.Based on the state parameters,the MIT-S1 and CSUH unified constitutive models for clays and sands are compared and analyzed.Through comparison,the state parameter of the MIT-S1 model cannot be reasonably applied to the hardening parameters.It is difficult to accurately characterize the dilatancy of sand by using the LCC as the reference line to define the state parameter δp.Additionally,the state parameters are not unified.The CSUH model extends NCL of clays into that of sands,and the defined state parameter ξ can dynamically and unified represent different compactness states of clays and sands,accurately describe the basic properties of soils and act reasonably on the hardening parameter by Mc and MY.Therefore,the model is more concise and advantageous in describing the stress-strain relationship.By comparing the test data of clays and sands and the predicted results of the two unified models,it is further verified the accuracy of the CSUH model in describing the stress-strain relationship of clays and sands.关键词
黏土/砂土/MIT-S1模型/CSUH模型/状态参量Key words
clay/sand/MIT-S1 model/CSUH model/state parameter分类
土木建筑引用本文复制引用
姚仰平,孙昊政..适用于黏土砂土统一本构模型的状态参量[J].岩土工程学报,2025,47(7):1344-1353,10.基金项目
国家自然科学基金项目(52238007,12472401) （52238007,12472401）
云南省科技厅重点研发计划(202303AA080011)This work was supported by the National Natural Science Foundation of China(Grant Nos.52238007,12472401) （202303AA080011）
and the Major Science and Technology Projects in Yunnan Province(Grant No.202303AA080011). （Grant No.202303AA080011）
