河南科学
河南科學
하남과학
HENAN SCIENCE
2014年
1期
61-67
,共7页
软基边坡%土工织物加筋法%有限元%加固机理
軟基邊坡%土工織物加觔法%有限元%加固機理
연기변파%토공직물가근법%유한원%가고궤리
weak soil slope%geotextile-reinforced method%FEM%reinforcement mechanism
通过构造软基边坡概化模型，利用有限元软件PLAXIS分析土工织物在不同软基深度下边坡中的加固效果，主要将整体安全系数、竖向位移与水平位移进行对比分析，分析结果表明土工织物加筋法，可明显提高边坡的整体稳定性、减小地基的不均匀沉降和限制侧向变形。当软基厚度较薄时，土工布的铺设可大大提高边坡的整体稳定性，但是位移的减小程度不明显；对于软基厚度较大，加固效果与软基厚度较薄时恰好相反；而且，多层土工织物的铺设对于边坡稳定性的提高并不明显。
通過構造軟基邊坡概化模型，利用有限元軟件PLAXIS分析土工織物在不同軟基深度下邊坡中的加固效果，主要將整體安全繫數、豎嚮位移與水平位移進行對比分析，分析結果錶明土工織物加觔法，可明顯提高邊坡的整體穩定性、減小地基的不均勻沉降和限製側嚮變形。噹軟基厚度較薄時，土工佈的鋪設可大大提高邊坡的整體穩定性，但是位移的減小程度不明顯；對于軟基厚度較大，加固效果與軟基厚度較薄時恰好相反；而且，多層土工織物的鋪設對于邊坡穩定性的提高併不明顯。
통과구조연기변파개화모형，이용유한원연건PLAXIS분석토공직물재불동연기심도하변파중적가고효과，주요장정체안전계수、수향위이여수평위이진행대비분석，분석결과표명토공직물가근법，가명현제고변파적정체은정성、감소지기적불균균침강화한제측향변형。당연기후도교박시，토공포적포설가대대제고변파적정체은정성，단시위이적감소정도불명현；대우연기후도교대，가고효과여연기후도교박시흡호상반；이차，다층토공직물적포설대우변파은정성적제고병불명현。
In this paper,a generalized model of the typical cross-section was used to study the consequence of soft ground slope with different depth which wsa reinforced by Geotextile-reinforced method vsing PLAXIS software. The comparisons of the overall safety factor,vertical displacement and horizontal displacement were analyzed. The result shows that the geotextile-reinforced method can significantly enhance the overall stability of the slope,and reduce the uneven settlement and lateral deformation. When the soft ground is relatively thin,the laying of geotextile can greatly improve the overall stability of the slope,but the reduction of deformation is not obvious;for the thicker soft ground,the effect is opposite. Moreover,the improvement of overall stability of the slope by laying multi-layer Geotextile is not obvious.
