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首页> 外文会议>Sino-Japan Geotechnical Symposium November; 20071104-07; Chongqing(CN) >OVERCONSOLIDATED CLAY MODEL BASED ON REVISED HVORSLEV ENVELOPE
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OVERCONSOLIDATED CLAY MODEL BASED ON REVISED HVORSLEV ENVELOPE

机译：基于修正的高斯包络的超固结黏土模型

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摘要

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 isn't 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.
机译：基于Yao等人提出的超固结模型，该模型可以很好地模拟超固结粘土的许多特性，包括应力-应变关系，应力膨胀率，应变硬化和软化以及路径依赖行为，这是Hvorslev提出的一种新方法。在本文中已经提出了用抛物线代替信封。当OCR很大时，曲线的斜率等于3。对于中间的超固结黏土和轻度的超固结黏土，抛物线接近Hvorslev包络线。当OCR等于1时，抛物线会叠加临界状态线。由于使用抛物线作为潜在的强度包络线，因此不再需要Hvorslev包络线的斜率Mh作为参数。所提出的模型中的参数与改进的凸轮粘土模型中的参数相同。在三轴不排水条件下的测试数据与预测结果之间的比较证实了基于修正的Hvorslev包络线的超固结模型的合理性。

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