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題 名 | 高雄臨港地區高層大樓深開挖設計與施工實例=A Case Study on Deep Excavation of High-rise Building near Kaohsiung Harbor Area |
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作 者 | 陳楷仁; 謝致德; 邢敏; 黃東開; | 書刊名 | 地工技術 |
卷 期 | 140 2014.06[民103.06] |
頁 次 | 頁7-16 |
專 輯 | 都會區工程開挖案例 |
分類號 | 441.13 |
關鍵詞 | 壁樁; 扶壁; 地中壁; 現地抽水試驗; 祛水; Barrette pile; Buttress wall; Cross wall; In-situ pumping test; Dewatering; |
語 文 | 中文(Chinese) |
中文摘要 | 本文介紹位於鄰近高雄港地區深開挖實例,其地質以粉土質砂與厚層粉土質粘土互層為主,偶夾砂質粉土或粉質細砂層,地下水位高且受潮汐影響,增加深開挖所產生之大地工程問題與作業之難度。本案例為地下五層、地上41層鋼骨海景住宅,面對此區困難地質條件及特殊之地下水文特性,須從地工設計及施工層面提出解決方案以降低深開挖之風險。本案例基礎開挖採逆打工法施作,逆打鋼柱為矩形壁樁,擋土結構為連續壁,配合地中壁、扶壁之配置,及利用樓板與扶壁接合以提供臨時支撐之構想,抑制開挖期間擋土結構之側向變位與增加開挖之穩定性。為確認75m深壁樁之承載力,基地開挖前先進行壁樁載重試驗,以確認壁樁能承受上部結構吊裝荷重。此外,施工前重新檢視地質資料尋求可能存在之透水層,並進行現地抽水試驗以求得相關水理參數,以為加設深水井祛水之依據。本案例順利完成於困難 地質區域之深開挖工作,可為後續於高雄臨港地區其他案例施工之參考。 |
英文摘要 | The site locates near Kaohsiung Harbor area, the characteristics of site geology is soft and loose soil with high and tide-influenced ground water table, The soil is mainly composed of slity sand, sandy silt and clayey silt stratum mixed with sandy silt layer. This paper illustrates an actual case on deep excavation for a high-rise building in seafront area. The project is a 41-story high-rise building with 5-level basement, the basement was built by top-down construction method. Diaphragm wall with cross and buttress walls, which connected to the B4F slab, is adopted to reduce the deflection of diaphragm wall and enhance the stability during excavation. The steel column embedded in 75-meter-long barrette piles were used to support the whole steel structure. A pile test for the barrette pile was conducted at site to ensure adequate capacity. In addition, the bore hole data were reviewed to understand the possible permeable layer, and the pumping test was carried out at site to obtain the relevant hydraulic parameters in order to design additional deep wells to deal with the ground water issues. This study would be a good reference for the design and construction of similar difficult project near Kaohsiung Harbor area in the future. |
本系統中英文摘要資訊取自各篇刊載內容。