摘要
为了充分合理地利用地表地形、地质结构和混凝土的材料特性,改进直线排桩的不利受力性状和提高排桩的整体稳定性,提出弧形间隔排桩-土钉墙组合支护结构,通过基坑支护的4组水平向千斤顶试验机模型试验,并利用ABAQUS有限元分析软件,对横向荷载下弧形间隔排桩和土钉墙的变形特征进行研究,分别讨论不同桩距、基坑高度和土钉长度的基坑支护结构变形性状。试验结果表明:在一定荷载下,减小桩距或基坑高度可降低基坑支护结构的变形,当土钉长度与基坑高度之比小于0.29时,桩间土钉墙变形明显;当土钉长度与基坑高度之比大于0.29时,其变形不明显。
In order to make full and reasonable use of the material properties of surface topography,geological structure and concrete,and to improve the unfavorable bearing behavior of straight row piles and increase the overall stability of row piles,this paper proposes a support structure combined with a curved spacer pile and a soil wall.By testing four horizontal jack testing machine models and applying ABAQUS finite element analysis software,this paper studied the deformation characteristics of curved spacer piles and soil nail walls under lateral load,with the four different pile spacings discussed respectively.The test results show that under certain load,reducing the pile spacing or foundation pit height can reduce the deformation of the foundation pit supporting structure.When the ratio of soil nail length to foundation pit height(l/h)is less than 0.29,the deformation of the soil nail wall between piles is obvious.When l/h is greater than 0.29,the deformation is not obvious.
作者
江凯
范瑛
JIANG Kai;FAN Ying(School of Civil Engin.,Architecture and Environment,Hubei Univ.of Tech.,Wuhan 430068,China)
出处
《湖北工业大学学报》
2019年第4期99-103,共5页
Journal of Hubei University of Technology
基金
国家自然科学基金(51578219)
关键词
有限元
弧形间隔排桩
土钉墙
变形
模型试验
finite element
curved spacer pile
soil nail wall
deformation
model test
