摘要
基于实际基坑桩锚支护工程,围绕桩身内力与基坑变形关键指标,探讨其与锚索位置之间内在关系,研究发现:桩身弯矩与剪力均随锚索间距的增大而减小,且其随第一排锚索位置的下移而减小;桩顶水平位移随锚间距影响较小,而坑顶地表沉降则随其增大而增大,同时两者均随第一排锚索位置的下移而增大;与锚索间距相比,第一排锚索位置对桩身内力和基坑变形的影响更为显著.鉴此,进一步给出了桩锚基坑支护锚索布设方案的建议,其研究结果可为其他类似工程提供参考与借鉴.
Based on the practical project of excavations with pile-anchor support,taking the internal force of pile and the deformation of excavations as key indicators,the intrinsic relationship among them and anchorage position are discussed.The bending moment and shear force of pile decrease with the increase of anchor spacing and the downward movement of the position of the first row anchor.The horizontal displacement of the pile top is less affected by anchor spacing,while the surface settlement of excavations increases with it,and both increase with the downward movement of the position of the first row anchor.Compared with the anchor spacing,the position of the first row anchor has a more significant effect on the internal force of pile and the deformation of excavations.In view of these,the proposal of anchoring scheme is further given,and the research results can provide reference for other similar projects.
作者
郭锐剑
段建
俞莉
周文权
母海鹏
黄佳梅
GUO Rui-jian;DUAN Jian;YU Li;ZHOU Wen-quan;MU Hai-peng;HUANG Jia-mei(College of Building Engineering, Hunan Institute of Engineering, Xiangtan 411104, China;School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;Zhongdu International Engineering Co., Ltd., Chengdu 610041, China)
出处
《湖南工程学院学报（自然科学版）》
2020年第1期81-86,共6页
Journal of Hunan Institute of Engineering(Natural Science Edition)
基金
湖南工程学院青年科研资助项目(XJ1810)
国家自然科学基金资助项目(51308273)
湖南省教育厅科研资助项目(17C0402)、(19B125).
关键词
桩锚支护
锚索位置
桩身内力
桩顶水平位移
坑顶地表沉降
pile-anchor support
anchorage position
internal force of pile
horizontal displacement of the pile top
surface settlement of excavations
