工程地质学报2024，Vol.32Issue(1)：295-302,8.DOI:10.13544/j.cnki.jeg.2021-0737
珊瑚钙质砂-聚氨酯高聚物复合体蠕变村山流变模型改进
AN IMPROVED MURAYAMA RHEOLOGY MODEL TO DESCRIBE THE CREEP BEHAVIOR OF THE MIXTURE COMPOSED BY CALCAREOUS SAND AND POLYURETHANE POLYMER GROUTING
摘要
Abstract
While grouting with polyurethane polymer significantly enhances the bearing capacity of coral calcareous sand foundations,accurately describing the total settlement and creep rate remains challenging.This study intro-duces an improved Murayama rheology model(IMRM)that pieceswisely describes the creep rate.The IMRM incor-porates an inverse proportional function related to stress and time to replace the viscous coefficient in the traditional Murayama rheology model.The validity of the IMRM was assessed through uniaxial oedometer tests under pressures of 100,200,and 400 kPa.The results indicate that the estimated values from the IMRM align well with the actually measured data throughout the entire experimental period.In contrast,the traditional Murayama rheology model proves effective only before the critical time.Higher stress applied to the soil samples results in larger settlements and an earlier occurrence of the critical time.关键词
蠕变/珊瑚钙质砂/高聚物/村山流变模型Key words
Creep/Coral calcareous sand/Polymer/Murayama rheology model分类
天文与地球科学引用本文复制引用
黄锐,郭成超,曹鼎峰,刘志遐..珊瑚钙质砂-聚氨酯高聚物复合体蠕变村山流变模型改进[J].工程地质学报,2024,32(1):295-302,8.基金项目
国家重点研发计划项目(资助号:2018YFC1802303),国家自然科学基金(资助号:41907244).This research is supportd by the National Key R&D Program(Grant No.2018YFC1802303)and National Natural Science Foundation of China(Grant No.41907244). （资助号:2018YFC1802303）
