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題 名 | 高雄鐵路地下化地工設計探討--以DL01標為例=Geotechnical Design of the TRA Kaohsiung Underground Railway in District DL01 |
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作 者 | 陳聰海; 吳文隆; 彭家德; | 書刊名 | 地工技術 |
卷 期 | 140 2014.06[民103.06] |
頁 次 | 頁37-48 |
專 輯 | 都會區工程開挖案例 |
分類號 | 442.88 |
關鍵詞 | 鐵路地下化工程; 明挖覆蓋工法; 連續壁; 圍堰; Underground railway; Cut and cover method; Diaphragm wall; Cofferdam; |
語 文 | 中文(Chinese) |
中文摘要 | 鐵路地下化為都市邁向現代化的重要指標,因都會區人口稠密、鄰房密集且腹地狹小,設計階段需特別考量施工之安全性及期程管控。國內鐵路地下化工程一般採明挖覆蓋工法施工,其工程特性為緊鄰營運中之臺鐵軌道,為確保連續壁槽溝穩定及深開挖安全,本工程採行:(1)橫交橋墩路口採CCP進行連續壁槽溝保護;(2)規劃小單元連續壁,縮短連續壁施工時間;(3)公、母單元均包覆帆布,降低連續壁包泥機率;(4)連續壁內預埋PVC管,以利超音波檢測壁體品質,並可據以評估是否於開挖前進行補強作業。此外,取消標準段中間樁及回撐,達到減少施工界面,縮短施工期程之目的。高雄鐵路地下化工程需穿越寬約75m愛河,過河段之隧道採用圍堰工法分三階段施工,因應主管機關汛期不得於河中施工之規定,設計河道版半逆打工法,以利汛期時可持續於河道版下方進行臺鐵隧道開挖作業。 |
英文摘要 | Underground railway is an important index for a city step toward modernizing. Because of densely population, build-up area and small hinterland in urban area, the safety of construction and time management should be specially considered in design stage. Domestic underground railway in general is to adopt the cut and cover method, which is against the operating TRA railway. In order to protect guide ditch of diaphragm wall and to ensure safety of deep excavation, there are some measures adopted including 1) using CCP to protect guide ditch of diaphragm wall at intersection and bridge pier; 2) working out small unit of diaphragm wall to shorten work schedule; 3) all panels covered with canvas to reduce interfacial adhesion between clay and diaphragm wall; 4) embedded PVC in diaphragm to help using ultrasonic testing the quality of diaphragm wall and in accordance with testing result to assess whether to strengthen the wall or not. Moreover, canceling post and re-strut can reduce construction interfaces to shorten the time schedule. TRA Kaohsiung underground railway project needs to pass through the 75m Love-river and the river-crossing section of tunnel is adopted the three stages of cofferdam construction method. To cope with the regulations of authority about avoiding construction in river during flood season, river slab of semi-top down construction method is designed, and it can be benefited at TRA tunnel excavation under river slab. |
本系統中英文摘要資訊取自各篇刊載內容。