英文篇名
APPLICATION OF NEFMAC METHOD (FRP REINFORCED CONCRETE) FOR SHIELD LAUNCHING
作者
李正彬、陳俊融、洪政豐、陳大康、歐陽旭、多田幸夫、李淳昌、林耕四郎
關鍵字
連續壁、連續碳素纖維、玻璃纖維、潛盾發進、到達工法
摘要
高雄都會區大眾捷運系統紅橘線路網建設工程中CR4區段標是位於高雄市兩條主要幹道-中山路和中正路圓環交叉點,包含紅線R10車站和橘線O5車站的立體交會車站 -「大港埔車站」(O5/R10車站)及四周之明挖及潛盾隧道工程。O5/R10車站連接紅線「高雄火車站」(R11車站)及橘線「市議會站」(O4車站)的隧道,計畫將使用潛盾工法施工。 本工程在潛盾發進工法選擇上,為避免車站及明挖覆蓋隧道受到潛盾發進破除連續壁時湧水、湧砂之風險,採用了台灣國內首次使用的「NEFMAC」工法(New Fiber Composite Material for Reinforcing Concrete)。此一工法藉著稱為FRP(Fiber Reinforced Plastics)之材料 - 連續碳素纖維、玻璃纖維製成之樹脂加勁材來取代鋼筋,作為連續壁混凝土的加勁材料,如此便可以利用FRP耐磨度低的特性,以潛盾機之切削鑽頭來直接磨除連續壁混凝土鏡面。本文即是針對CR4區段標連續壁設計、施工採用「NEFMAC工法」中之FRP材料所做的報告。
英文摘要
The position of KMRT CR4 section is at the intersection of Chung Shan and Chung Chen Roads, where The Red and Orange Lines of the KMRT routes meet, including O5/R10 station, cut & cover tunnels and shield tunnels. Meanwhile the routes between O5/R10 and R11 stations and between O5/R10 and O4 stations shall be constructed by the shield tunneling method. The shield launching and arriving generally have applied the traditional method with a ground improvement, but the accidents and troubles of the shield works are actually often caused by poor ground improvement works at the shield entrance face outside the diaphragm wall. Therefore, to reduce the risks of them, NEFMAC method(New Fiber Composite Material for Reinforcing Concrete), by which method the shield machine can demolish directly the shield entrance face of diaphragm wall by itself because of FRP’s higher tensile strength but softer behavior to be chipped out than rebar, have been developed and was applied for the first time in Taiwan. This paper introduces the above NEFMAC method applied for the shield launching in CR4 section, where briefly the design and construction records of.