- 摘 要
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(寧波大學(xué)巖土工程研究所， 寧波 315211)
［摘要］通過開展不同溫度下土的三軸剪切試驗，獲得了不同圍壓、不同溫度下飽和黏土的應(yīng)力應(yīng)變特性曲線，分析了溫度對飽和黏土強(qiáng)度特性的影響，討論了三軸抗剪強(qiáng)度與溫度、圍壓的關(guān)系。結(jié)果表明：不同溫度和圍壓下試樣的剪切曲線均呈現(xiàn)較為明顯的溫度硬化形態(tài)；隨溫度的升高，黏性土的c，φ值均有所減小，土的強(qiáng)度降低；軟黏土抗剪強(qiáng)度的溫度效應(yīng)與試樣所受的圍壓有一定的關(guān)系，圍壓越大其溫度效應(yīng)越明顯。
［關(guān)鍵詞］溫度效應(yīng)； 三軸試驗； 飽和黏土； 強(qiáng)度特性
中圖分類號：TU411文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)16-0101-04
Experimental study on shear strength of saturated clay at different temperatures
Fan Gaofei, Liu Ganbin, Yin Tiefeng, Guo Zhen
(Institute of Geotechnical Engineering, Ningbo University, Ningbo 315211, China)
Abstract:Triaxial shear strength tests on the clay at different temperatures were carried out to obtain stress-strain characteristic curves of saturated clay at different confining pressures and temperatures. The effect of temperature on strength properties of saturated clay was analyzed, and the relationship between triaxial shear strength and temperature as well as confining pressure was discussed. The results show that shear curves of samples at different temperatures and confining pressures show a significant temperature hardening forms; the values of c, φ of the clay are reduced with the rise of temperature and strength of soil is reduced; temperature effect on shear strength of soft clay is related to the confining pressure of samples, and the greater the confining pressure is, the more obvious the temperature effect is.
Keywords:temperature effect; triaxial test; saturated clay; strength property
*國家自然科學(xué)基金項目(51478228)，2014年浙江省新苗人才計劃項目(2014R405074)，寧波大學(xué)研究生科研創(chuàng)新基金項目 (G14054)。
作者簡介：范高飛，碩士，Email：1134687175@qq.com。
