半圓形全套管基樁作為擋土設施之開挖案例研究;Case Study on the Application of Semi-Circular Full-Casing Foundation Piles as Retaining Structures in Excavation

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题名:	半圓形全套管基樁作為擋土設施之開挖案例研究;Case Study on the Application of Semi-Circular Full-Casing Foundation Piles as Retaining Structures in Excavation
作者:	隋明潔;CHIEH, SUI MING
贡献者:	土木工程學系
关键词:	基樁擋土樁;噴漿擋土壁;祛水排放;安全支撐;foundation pile retaining piles;shotcrete retaining walls;dewatering and drainage;safety bracing
日期:	2025-01-15
上传时间:	2025-04-09 15:55:46 (UTC+8)
出版者:	國立中央大學
摘要:	以臺中捷運站為例，該基地位於臺灣大道與文心路交叉口，其西側土地開發大樓共構結構工程地下開挖深度達 36.75 公尺，為全臺地下室開挖深度之最深紀錄，採明挖順打工法施工。東側土地開發大樓共構結構工程則首度於國內採用半圓形全套管基樁作為擋土設施，設計理念兼具前瞻性與創新性。此工法考量半圓形擋土基樁斷面勁度折減，以確保施工安全及品質，並透過創新理念達成增加地下室使用空間、節能減碳、節省公帑支出，同時改變臺中地區高風險人工擋土樁工法之傳統格局。臺中地區地質屬卵礫石層，且地下水位由北向南逐漸升高：豐原地區約深 60 公尺，潭子區約 50~55 公尺，太平區約 20 公尺，霧峰區更接近地表層。都市發展過程中，舊有地下設施（如舊有基礎、擋土設施、基樁等）在拆除重建時，如何直接破除而不擾動土層、避免基地塌陷與鄰房損壞成為重要課題。本研究旨在整合與分析深開挖擋土壁工法之相關研究，並探討擋土壁施工過程中可能面臨的風險問題及可行的解決對策，以提供日後深開挖工程之參考。;The site is located at the intersection of Taiwan Boulevard and Wenxin Road. The west-side development of the building complex features a cut-and-cover structure with an excavation depth reaching 36.75 meters, setting the record for the deepest basement excavation in Taiwan. The construction employed the open-cut and sequential excavation method. On the east side, the development project marks the first domestic application of semi-circular full-casing foundation piles as retaining structures. This design integrates forward-looking and innovative principles. The construction methodology accounts for the rigidity reduction of the semi-circular cross-section retaining piles to ensure safety and quality. Leveraging this innovative concept, the project successfully increases basement space utilization, promotes energy saving and carbon reduction, reduces public expenditure, and transforms the traditional high-risk retaining pile methods in the Taichung area.The geology of Taichung is characterized by gravel layers, with groundwater levels rising gradually from north to south: approximately 60 meters deep in the Fengyuan area, 50–55 meters in the Tanzih area, 20 meters in the Taiping area, and nearing the surface in Wufeng. During urban development, the removal and reconstruction of existing underground structures (such as old foundations, retaining structures, and foundation piles) present critical challenges, including how to break through these structures without disturbing the soil layers, preventing site collapse, and avoiding damage to adjacent buildings.This study aims to integrate and analyze research related to retaining wall construction methods for deep excavation and to investigate potential risks and feasible solutions encountered during the construction of retaining walls. The findings are intended to serve as a reference for future deep excavation projects.
显示于类别:	[土木工程研究所] 博碩士論文

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