OVERCONSOLIDATED CLAY MODEL BASED ON REVISED HVORSLEV ENVELOPE
Based on the over-consolidated model proposed by Yao et al, which can model many characteristics of over-consolidated clays well, including stress-strain relationships, stress dilatancy,strain hardening and softening, and path dependency behavior, a new method that the Hvorslev envelope is substituted by a parabola approximately has been proposed in this paper. When the OCR is rather large, the slope of the curve is equal to 3. For the middle over-consolidated clays and light over-consolidated clays, the parabola is close to the Hvorslev envelope. When the OCR is equal to 1, the parabola superposes the critical state line. Due to using the parabola as the potential strength envelope, the slope of Hvorslev envelope Mh isnt required as the parameter anymore. The parameters in the proposed model are the same as those in the Modified Cam-clay model. The comparison between the test data and the predicted results under the triaxial undrained and drained conditions confirmed the rationality of the over-consolidated model based on the revised Hvorslev envelope.
Revised Hvorslev Envelope Over-Consolidated Clays Over-Consolidated Clay Model
YANGPING YAO ZIQIANG LI WEI HOU ZHENG WAN
Department of Civil Engineering, Beihang University, Beijing 100083, China
国际会议
第三届中日岩土工程研讨会(Proceedings of the 3rd Sino-Japan Geotechnical Symposium)
重庆
英文
698-705
2007-11-05（万方平台首次上网日期，不代表论文的发表时间）