Method for manufacturing shield tunnel longitudinal prestressing concrete lining segment

一种盾构隧道纵向预应力混凝土衬砌管片的制备方法

Abstract

A method for manufacturing a shield tunnel longitudinal prestressing concrete lining segment comprises the steps of (1) respectively and permanently embedding hole making devices at the preset positions of a connecting block, a standard block and an arch base block of each set of circulating district lining ring to make a hole way, and hole ways on adjacent pipe pieces are correspondingly and longitudinally communicated to form a plurality of preset channels which longitudinally penetrate through the circulating districts; (2) respectively penetrating prestressing steel strands into the preset channels, and when one circulating district is spliced, conducting tension and anchorage to form the whole structure. The method is combined with longitudinal high-strength steel strands, the tunnel overall rigidity is improved, longitudinal deformation is reduced, and longitudinal uneven sedimentation is especially reduced. Precompression is exerted on the concrete lining segment in the longitudinal direction, the stress between lining rings is kept well, stretching and error lifting of the joint between the lining rings are avoided, and water leakage is prevented and controlled.
一种盾构隧道纵向预应力混凝土衬砌管片的制备方法,(1)在每组循环区间衬砌环的连接块、标准块以及拱底块上的预定位置分别永久埋置制孔器以制成孔道,相邻管片上的孔道对应纵向相互连通形成多条纵向贯穿循环区间的预设通道;(2)在所述多条预设通道中分别穿入预应力钢绞线,当一个循环区间拼装结束后进行张拉、锚固以形成整体结构。该制备方法结合纵向高强度螺栓,有利于提高隧道整体刚度,减小纵向变形,特别是纵向不均匀沉降;并且通过对混凝土衬砌管片在纵向施加预压力,能很好的保持衬砌环间的应力,避免了衬砌环间接缝的张开和错抬,防治渗漏水。

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Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-102536265-AJuly 04, 2012葛洲坝集团第五工程有限公司盾构隧道预应力衬砌施工方法及所用的预应力管片
    CN-202417517-USeptember 05, 2012葛洲坝集团第五工程有限公司预应力管片
    JP-2625031-B2June 25, 1997佐藤工業株式会社場所打ちライニング工法
    JP-3545699-B2July 21, 2004マテラス株式会社, 五洋建設株式会社鋼製セグメントの二次覆工法

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