本文選題：非飽和土 + 孔隙比��； 參考：《南水北調(diào)與水利科技》2017年06期

【摘要】：針對(duì)某重塑黏土,通過(guò)常規(guī)固結(jié)儀,研究了恒壓下初始孔隙比、應(yīng)力及初始飽和度對(duì)濕化變形的影響。試驗(yàn)結(jié)果顯示,應(yīng)力和初始孔隙比e對(duì)濕化變形影響明顯,低應(yīng)力下,變形隨e的提高逐漸由膨脹變?yōu)閴嚎s;高應(yīng)力下,試樣均發(fā)生壓縮,壓縮量隨e的增大而增大;定量分析了濕化變形與應(yīng)力和e之間的關(guān)系。試樣濕化穩(wěn)定時(shí)間t0受應(yīng)力和初始孔隙比e影響明顯,t0隨應(yīng)力的增加而增大;低應(yīng)力下,t0隨e的增加而增大,高應(yīng)力下,t0隨e的增加先增大后減小。初始飽和度Sr對(duì)濕化變形也有較大影響,低壓應(yīng)力下,試樣膨脹量隨著Sr的增加先減小后增大,可能存在"最優(yōu)初始飽和度",使得變形量最小;高壓應(yīng)力下,試樣壓縮量隨Sr的增加而減小,二者可近似用直線擬合。
[Abstract]:The effects of initial void ratio, stress and initial saturation on the wetting deformation of a remolded clay under constant pressure were studied by a conventional consolidation instrument. The results show that stress and initial void ratio (e) have obvious effects on wetting deformation. At low stress, the deformation gradually changes from expansion to compression with the increase of e, and the compression rate increases with the increase of e under high stress. The relationship between wetting deformation and stress and e is quantitatively analyzed. The effect of stress and initial void ratio (e) on the wetting stability time (t _ 0) of the sample increases obviously with the increase of stress, and increases with the increase of e at low stress, and increases at first and then decreases with the increase of e at high stress. Initial saturation Sr also has great influence on wetting deformation. Under low pressure stress, the sample expansion decreases first and then increases with the increase of Sr, and there may be "optimal initial saturation", which makes the deformation minimum. The compression of the sample decreases with the increase of Sr, which can be approximately fitted with a straight line.
【作者單位】： 山東農(nóng)業(yè)大學(xué)水利土木工程學(xué)院;河海大學(xué)巖土力學(xué)與堤壩工程教育部重點(diǎn)實(shí)驗(yàn)室;LEM3 CNRS
【基金】：山東省重點(diǎn)研發(fā)計(jì)劃(2017GSF16104) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資助項(xiàng)目(2017B651X14) 江蘇省研究生科研與實(shí)踐創(chuàng)新計(jì)劃資助項(xiàng)目(KYCX17_0475) 山東省科技發(fā)展計(jì)劃項(xiàng)目(2012GNC11203)~~
【分類號(hào)】：TV41
，

本文編號(hào)：1984141