發(fā)布時間：2018-08-08 19:59

【摘要】：研制了一個軸對稱的適用于中空圓柱試樣的熱固結(jié)試驗裝置。該裝置可獨立施加和控制試樣內(nèi)、外的溫度荷載,并保持試樣徑向溫度梯度的存在,且可施加徑向固結(jié)壓力,適用于特定的溫度和應(yīng)力耦合作用路徑的試驗。進(jìn)行了一種飽和黏性土的熱固結(jié)試驗,即在試樣內(nèi)邊界和外邊界交替逐級施加范圍為25℃~75℃的溫度荷載,包括徑向壓力為50,100,150,200 k Pa的4種情形,分析了孔隙水壓力及熱固結(jié)體應(yīng)變隨時間的演化過程。研究表明,加熱等級和加熱次序不同,在同樣的最終溫度荷載下孔隙水壓力穩(wěn)定后的最大值有較大差異而體應(yīng)變也不同,實際上反映了溫度荷載作用路徑對試樣熱固結(jié)效應(yīng)的顯著影響。
[Abstract]:An axisymmetric thermal consolidation test device for hollow cylindrical specimens has been developed. The device can independently apply and control the temperature load inside and outside the specimen, and maintain the existence of radial temperature gradient of the specimen. It can also apply the radial consolidation pressure, which is suitable for the test of specific temperature and stress coupling path. A thermal consolidation test of saturated clay is carried out, in which the internal and external boundaries of the specimen are alternately applied at 25 鈩，

本文編號：2172888