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APPARATUS FOR YIELDABLE ARCH UMBRELLA ARCH REINFORCEMENT AND CONSTRUCTION METHOD FOR YIELDABLE ARCH UMBRELLA ARCH REINFORCEMENT
APPARATUS FOR YIELDABLE ARCH UMBRELLA ARCH REINFORCEMENT AND CONSTRUCTION METHOD FOR YIELDABLE ARCH UMBRELLA ARCH REINFORCEMENT
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机译:屈服式拱形拱的加固装置及屈服式拱形拱的施工方法
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摘要
PURPOSE: A multi-stage grouting using a yielding steel pipe and a construction method thereof are provided to form an artificial compression strut by tensile force of an inserted steel wire to increase a friction force and to perform an arching effect, thereby improving the stability of a tunnel. CONSTITUTION: A multi-stage grouting using a yielding steel pipe includes an outer steel pipe(200), an inner steel pipe(300), a fixing device(400), a fixing plate(500) and a sealing member(600). A construction method of a multi-stage grouting using a yielding steel pipe is composed of the following steps of: forming an advanced bore on a grout object(101); inserting the outer steel pipe with a connection hole into the bore and filling the bore with a grout material; inserting the inner steel pipe into the connection hole of the outer steel pipe to be installed and injecting the lubricant between the outer and the inner steel pipes; fixing the outer and the inner steel plates by the fixing plate and injecting a grout material in the inside of the inner pipe for the grout material to be injected into the inside of the advanced bore; and fixing the inner pipe on the fixing device by pulling a wire of the inner pipe.
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