铁道标准设计Issue(1)：92-97,6.DOI:10.13238/j.issn.1004-2954.2016.01.020
软土盾构隧道施工阶段上浮量预测综述
Review on Prediction of Upward Movement of Shield Tunnel in Soft Soil during Construction
摘要
Abstract
With the development of shield tunnels for urban subway or passages underwater, the upward moving of tunnel segment has become a challenge during the construction. Firstly, the current researches and problems are reviewed in terms of floating mechanism, relationship between lateral and vertical rigidity, distribution law of the buoyancy and floating calculation model. Secondly, based on the existing research results, new ideas and research directions are proposed, including (1) probing distribution rule and calculation formula when backfill grouting filling and penetration are taken as a continuous process;(2) putting forward local modified lateral and vertical stiffness( BBM) model in stead of the traditional rigidity model and beam-spring model; ( 3 ) defining the inapplicability of the round elastic foundation beam method and modified routine method in the analysis of upward movement during construction and addressing the applicability of the resistance inversion model;(4) considering the factors of time-varying grouting, earth stress, buoyancy and compression of the overburden soil, and setting up the model of static buoyancy and dynamic buoyancy based on the equivalent rigidity and BBM. Finally, some practical suggestions are offered.关键词
盾构隧道/施工阶段/管片/上浮/预测Key words
Shield tunnel/Construction period/Upward movement of segment/Prediction分类
交通工程引用本文复制引用
王道远,朱永全,何川..软土盾构隧道施工阶段上浮量预测综述[J].铁道标准设计,2016,(1):92-97,6.基金项目
国家自然科学基金资助(51478277) （51478277）
河北省自然科学基金资助(E201619002) （E201619002）
河北省人才工程培养经费资助科研项目(A201500116) （A201500116）
河北省高等学校科学技术研究青年基金(QN2014161)。 （QN2014161）
