辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(1)：62-70,9.
不同配合比下砂泥岩填料蠕变力学模型
Creep mechanical model of sand and mudstone filler under different mix proportions
摘要
Abstract
To reveal the creep mechanical properties of sandstone and mudstone fillers under different mix proportions,shear creep tests were conducted on sandstone and mudstone fillers under different mix proportions.The experiment found that the stress-strain curve of the filling material exhibited obvious nonlinear characteristics.Therefore,a viscoelastic modulus reflecting different mix proportions and load times was defined to describe the viscoelastic deformation of the filling material.A unsteady elastic body was established to describe the instantaneous elastic deformation,and an SP element was introduced to construct a unsteady viscoplastic body to characterize the viscoplastic deformation.Thus,a nonlinear creep mechanical model of sandstone and mudstone filling material under different mix proportions was obtained.Simultaneously the new model and the basic model were used to simulate the creep test data of fillers,and verify that the new model is reasonable and feasible.The research conclusions provide a reference for the long-term stability evaluation of wharf sand-mudstone mixed filler foundation.关键词
配合比/泥岩颗粒含量/砂泥岩填料/蠕变/非线性/黏弹性模量/力学模型Key words
mix ratio/mudstone particle content/sand and mudstone fillers/creep/nonlinear/viscoelastic modulus/mechanical model分类
水利科学引用本文复制引用
尚亚琼,杨柯红,蔺国骞,曹利军..不同配合比下砂泥岩填料蠕变力学模型[J].辽宁工程技术大学学报（自然科学版）,2025,44(1):62-70,9.基金项目
山东省自然科学基金项目(ZR2018BEE050) （ZR2018BEE050）
