Page 257 - 捷運技術 第45期
P. 257
捷運技術半年刊 第45期 249
樁基礎施工及受載對鄰近潛盾隧道之影響
－3D數值模擬及分析
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張榮峰 胡逸舟 黃怡超 朱慶村
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摘 要
臺北都會區大眾捷運系統環狀線DF113設計標之工程範圍橫跨新北市板橋區及新
莊區，包括5座車站、路線全長約6.4km，車站與車站間皆採高架橋型式連結。由於路
線於新北市板橋區文化路上與營運中之捷運板南線潛盾隧道平面衝突，在考量複雜的
土壤與地下結構物互制下，應用Midas/GTS之三維(3D)數值模型探討高架橋梁基礎施
工及載重對潛盾隧道之影響。本文介紹此案例中土壤、樁及隧道互制以及一系列施工
步驟之模擬，並對隧道覆土深度、間距及柔性行為等因素進行探討，分析所得之隧道
變形分布則提供後續監測系統佈設及施工管控之參考。
關鍵詞: 3D數值模擬、臺北捷運環狀線、土壤-樁-隧道互制
3D Numerical Modeling and Analysis of Pile Construction and
Loading Effects on Adjacent Shield Tunnels
Jung-Feng Chang I-Chou Hu Yi-Chao Huang Qing-Cun Zhu 4
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Abstract
The work scope of Taipei MRT Circular line Design Lot DF113 covers Banqiao and
Xinzhuang districts in New Taipei City, including five stations and an approximately
6.4-km-long elevated route. Since the alignment of the route overlaps with the in-service
underground Banqiao-Nangang line on Wenhua Road in Banqiao District, and considering
the complicated interaction of soil substructure, a three-dimensional (3D) model using
Midas/GTS was applied to investigate the construction and loading effects of pile
foundations on the adjacent shield tunnels. This paper introduces simulations of soil-pile-
tunnel interaction and a series of construction sequences. In addition, the effects of tunnel
depth, spacing, and flexibility of tunnels on tunnel deformations are further examined. The
computed distributions of tunnel deformations can be used as references for monitoring
system setup and construction management and control.
Keywords: 3D numerical modeling, Taipei MRT Circular Line, soil-pile-tunnel interaction
1 亞新工程顧問股份有限公司大地工程部工程師 jungfeng.chang@maaconsultants.com
2 亞新工程顧問股份有限公司大地工程部正工程師 my.hu@maaconsultants.com
3 臺北市政府捷運工程局土木建築設計處副工程師 ychuang@trts.dorts.gov.tw
4 臺北市政府捷運工程局土木建築設計處幫工程師 ctju@trts.dorts.gov.tw
