摘要
通过建立数值分析模型,比较分析泄水式管片和封堵管片承受的外水压力特性,表明泄水式管片更能降低最大孔隙水压。为进一步研究泄水式管片对壁后孔隙水压影响,提取出前12m管片进行研究,表明泄水式管片让拱底水压得到了有效折减。通过现场模拟管片有无泄水孔两种情况下的压泄水试验,得出其所示规律与数值模拟基本相符,从而进一步验证泄水降压式管片的有效性。
Through the establishment of calculation model, the seepage field and stress field, this paper analyzes the water pressure characteristics of the two segment, it shows that drainaged segment can reduce the pressure. For the further study of drainaged segment effect on the wall after the pore water pressure, extracting the first 12m segment was studied. Which makes the lower discharge segment reduced water pressure. At last, the experiment is carried out, and the conclusion is consistent with the result of numerical analysis, and to further verify the validity of the discharge buck segment.
作者
刘建波
苏骏
LIU Jianbo SU Jun(School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, Hubei 430068, Chin)
出处
《施工技术》
CAS
北大核心
2017年第13期150-153,共4页
Construction Technology
关键词
盾构
泄水式管片
数值分析
试验
孔隙水压
shields
inclined shaft
numerical analysis
tests
pore water pressure
