Page 90 - 捷運技術 第52期

86 王世章 捷運松山線尾軌段潛盾隧道穿越玉成橋之障礙處理

捷運松山線尾軌段潛盾隧道穿越玉成橋之障礙處理

王世章 1

摘要

因應捷運松山線營運需求，於行車終點松山站規劃設計延伸車輛停放空間之尾軌段，該
尾軌段潛盾隧道須穿越松山區八德路4段玉成橋下方基樁，因此於潛盾隧道施工前，必須先

排除玉成橋基樁障礙，且於維持道路通行下「穿著西裝改西裝」原地改建玉成橋，使潛盾機
順利通過，將影響松山線通車之重大因素消瀰於無形。
在臺北都會區域施工處理潛盾機穿越玉成橋下方基樁之障礙，首先必須擬具可行之交通
維持計畫，再依該計畫分階段施工，並就原玉成橋基樁與新建基礎橋台位置衝突情況，採
「先拆後建」或「先建後拆」兩種方式進行玉成橋改建。

關鍵詞：交通維持計畫、先拆後建、先建後拆

Obstacle Treatment of Songshan Line’s Tail Track Section-Shield
Tunnel Construction Passing Beneath the Yucheng Bridge

Shih-Chang Wang 1

Abstract

With the operation requirements of Songshan line, the tail track was designed and planned
to extend the train parking space at Songshan Station--the Songshan line’s termination station.
This tail track would pass through the piles beneath the Yucheng Bridge located at Section 4, Bade
Road, Songshan District. Therefore, the pile obstacle should be overcome before the shield tunnel

construction. In addition, the traffic on the road should also be maintained while synchronizing the
re-construction of Yucheng Bridge at the original place. It is a tough challenge to make the shield
tunnel pass successfully and eliminate the factors influencing the Songshan line operations as much
as possible.
When dealing with the pile obstacles that the shield tunnel machine might encounter when
it passes beneath the Yucheng Bridge, a traffic maintenance plan should be approved first, and

then, the construction should be carried out step by step by following the plan. Furthermore, to
synchronize the piles demolition of the Yucheng Bridge and the build-up of new bridge abutment
foundation, the “demolition before construction” method or “construction before demolition”
method were adopted to implement the reconstruction of the Yucheng Bridge.

Keywords: traffic maintenance plan, demolition before construction, construction before
demolition

1 臺北市政府捷運工程局中區工程處正工程司兼主任 xv018130@dorts.gov.taipei