摘要
后注浆微型钢管桩大多用于房屋加固和边坡处理,本文首次将其应用在输电线路工程中.之前的研究大多集中于整体的微型桩效应和整体的变形协调,而对于后注浆微型钢管桩的注浆厚度还未曾有过研究.分析了后注浆微型钢管桩,研究10,15和20mm的不同注浆厚度的后注浆微型钢管桩在水平和上拔力作用下的水平位移、竖直位移和弯矩,对不同壁厚情况下的最优注浆厚度进行比选,得出最优注浆厚度与壁厚、钢管直径有关.通过大量有限元数值模拟得出最优注浆厚度与钢管壁厚、钢管直径之间的关系式,为后期输电线路结构设计人员优选最优注浆厚度提供参考依据.
Post-grouting micro-steel pipe piles are mostly used for building reinforcement and slope treatment.This paper applies them to transmission lines engineering for the first time.The previous study was mainly focused on the overall micro pile effect and the overall deformation coordination,but the grouting thickness of the post grouting micro steel pipe pile was not yet studied.This paper mainly studies and analyses the post-grouting micro-steel pipe piles,studies the horizontal displacement,vertical displacement and bending moment of post-grouting micro-steel pipe piles with different thickness of 10,15 and 20 mm under the action of horizontal and uplift forces,compares the optimal grouting thickness under different wall thickness,and concludes that the optimal grouting thickness is related to wall thickness and diameter of steel pipe.Through a large number of finite element numerical simulation,the relationship between the optimal grouting thickness and the wall thickness and diameter of steel tube is obtained,which provides a reference for the later transmission line structural designers to select the optimal grouting thickness.
作者
李春燕
徐运生
李占岭
王胜
LI Chunyan;XU Yunsheng;LI Zhanling;WANG Sheng(Department of Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei,China;Hebei Electric Survey and Design Research Institute Co.,Ltd.,China Electric Power Construction Group,Shijiazhuang 050031,China)
出处
《中国工程机械学报》
北大核心
2019年第3期196-200,共5页
Chinese Journal of Construction Machinery
基金
国家自然科学基金青年基金资助项目(51301068)
关键词
输电线路
后注浆
微型钢管桩
注浆厚度
transmission line
post grouting
micro steel pipe pile
grouting thickness
