TUNNEL LINING WORK
PROBLEM TO BE SOLVED: To provide a lining work capable of shortening the term of work. SOLUTION: In a lining work method, formworks 12 are installed along the inner periphery of an excavation surface 10 at predetermined intervals, and a lining concrete layer 14 is formed by placing concrete between...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a lining work capable of shortening the term of work. SOLUTION: In a lining work method, formworks 12 are installed along the inner periphery of an excavation surface 10 at predetermined intervals, and a lining concrete layer 14 is formed by placing concrete between the excavation surface 10 and the formwork 12. The formwork 12 has a precast concrete flat panel 16 which is used also as a formwork panel and a coupling reinforcing member 18 accompanied along the inner surface of this flat panel 16. When installing the formwork 12 along the inner periphery of the excavated surface 10, the lower end side of a pair of formworks 121 located at both the ends in the peripheral direction is placed on the side wall concrete portion 22 and another formwork 122 is placed and connected adjacently at its upper side. When installing the formwork 122, its lower end side is coupled to the upper end side of the formwork 121 being adjacent in the peripheral direction, and the upper end portion is supported by an anchor 24. The one end side of the anchor 24 is anchored to the natural ground 26. |
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