摘要
为研究生态加筋土高挡墙的长期变形特性,结合高填方支挡工程,采用钢塑土工格栅作为加筋材料,混凝土砌块作为挡墙面板,筋材与面板锚固相连共同受力,进行了生态加筋土高挡墙的现场试验,分析挡墙顶部、中部及墙后填土的垂直和水平位移的长期变形规律。结果表明:工后挡墙顶部最大沉降为3 mm,最大水平位移为44 mm,位于挡墙中部。整个生态加筋土挡墙的变形特征为从墙顶往下呈鼓状膨胀发展,挡墙中部位移发展最大;加筋挡墙中部水平位移速率远大于挡墙顶部,但在工后200 d挡墙中部水平位移已收敛稳定,而挡墙顶部的水平位移在工后200~650 d仍处于动态微量增长中。
In order to study the long-term vertical and horizontal deformation of ecological reinforced high-retaining wall,combining with the high-fill retaining engineering,using steel-plastic geogrid as reinforcement material and concrete block as retaining wall panel（ the reinforcement material and panel were connected and acted together）,a field experiment on an ecological reinforced earth highretaining wall was carried out. The results show that the maximum settlement at the top of the retaining wall is 3 mm,and the maximum horizontal displacement is 44 mm,which is located in the middle of the retaining wall. The deformation of the retaining wall is a drum-shaped curve from the top to the bottom of the wall,and the horizontal displacement in the middle of the retaining wall is the largest. The horizontal displacement rate in the middle of the retaining wall is much larger than that at the top; the horizontal displacement in the middle of the retaining wall has converged andbecome stable in post-construction 200 d,while the horizontal displacement at the top is still in micro-growth from post-construction 200 d to 650 d.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2017年第4期1407-1414,共8页
Journal of Guangxi University（Natural Science Edition）
基金
国家自然科学基金资助项目(51469005)
广西自然科学基金资助项目(2015GXNSFAA139257
2015GXNSFAA139270)
广西科技大学研究生教育创新计划项目(GKYC201627)
关键词
加筋土
挡墙
土工格栅
长期变形
reinforced soil
retaining wall
geogrid
long-term deformation
