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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/687

    Title: 黏土層中潛盾隧道開挖沉陷之有限元素分析;Finite element analysis of settlement caused by shield machine tunneling in soft clay
    Authors: 李金芳;Chin-Fang Lee
    Contributors: 土木工程研究所
    Keywords: 地表沉陷;未襯砌長度;盾尾間隙閉合;盾尾間隙;surface settlement;unlined length;closure of tail voids;shield tunnel
    Date: 2002-06-18
    Issue Date: 2009-09-18 17:10:19 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 隧道工程在進行開挖時,對於路面交通的影響頗大,因此在開挖時,若採用潛盾工法將會減少對路面交通之影響。本研究使用有限元素法,針對潛盾隧道開挖,所造成之地表沉陷進行分析。本文分別對於單隧道與雙隧道進行探討;單隧道是採三向度的分析,分析內容為潛盾開挖對地表沉陷之影響,並就其深徑比(C/D)、未襯砌長度、與隧道直徑比(P/D)等參數之影響進行研究;而雙隧道方面則是採二向度平面應變分析,觀察雙隧道中之新挖隧道,在盾尾間隙閉合時,所造成地表沉陷的影響。 本研究之分析係以ABAQUS有限元素分析程式作為數值計算工具。並將數值分析結果與離心試驗結果比較,藉由對照離心試驗以驗證數值分析模型的正確性。 Tunneling affects the traffic over the ground significantly .In order to reduce the influence under construction of tunneling , we can used shield machine tunneling method comprehensively . In this study , finite element method is applied to analyze the influence on surface settlement caused by shield tunneling in soft clay. In this research , we study single and dual tunneling problems separately .Under three-dimension condition , single tunneling problems investigate the effect of surface settlement due to shield tunneling , (C/D) ratio ,and (P/D) ratio . Under two-dimension condition , dual tunneling problem investigate the effect of surface settlement due to shield tunneling ,and (C/D) ratio . The numerical results using code ABAQUS were compared with the results from centrifuge model tests.
    Appears in Collections:[土木工程研究所] 博碩士論文

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