防灾减灾工程学报2017，Vol.37Issue(6)：886-891,909,7.DOI:10.13409/j.cnki.jdpme.2017.06.005
上埋式管道穿越高填方填挖结合部位的受力状态研究
The Study of Positive Buried Pipeline's Strained Condition Crossing the Transition Zone of High Embankment
摘要
Abstract
The settlement of soil is one of the main reasons of underground pipeline's damage,there are many theoretical researches to analyse this phenomenon,but their focuses are not the high fill's settlement after construction,and most of them never consider the impact of the original terrain.This paper takes buried drainage pipe in Yanan District of loess high fill as the prototype.We designed the simulation of the soil fill settlement process,distributed pressure box,displacement gauge and strain gauge to collect soil contact pressure,pipe-soil relative displacement,pipeline strain and so on.The experimental study shows that the negative soil arch effect has obvious influence on the pressure of the upper part of the pipeline.The vertical pressure coefficient is 3.4,and the relationship between the settlement and the settlement is in line with the three degree polynomial curve,and the effect of the negative soil arch effect on the pipeline can not be ignored.Void layer between the bottom of the pipe was found in longitudinal profile.The phenomenon can confirm the decrease of the pipe soil contact pressure.The research results can provide reference for the calculation of the soil pressure around the pipeline and control of pipeline deformation in loess high fill.关键词
黄土高填方/工后沉降/地埋管道/模型试验/土拱效应Key words
loess high fill/post-construction settlement/underground pipelines/model test/soil arching effect分类
建筑与水利引用本文复制引用
段旭,门玉明,董琪,常园..上埋式管道穿越高填方填挖结合部位的受力状态研究[J].防灾减灾工程学报,2017,37(6):886-891,909,7.基金项目
陕西省重点项目——社会发展领域(2017ZDXM-SF-078)、黄土地区土木工程与地质环境协调研究创新团队项目(2016KCT-13)、陕西省重点产业创新链-社会发展领域项目(2015KTZDSF03-02)、陕西省软科学研究计划项目(2016KRM099)资助 （2017ZDXM-SF-078）
