Shield segment

The utility model discloses a shield segment, including inner ring layer and outer ring layer, inner ring layer with outer ring layer fixed connection, outer ring layer is confined concrete ring, andouter ring layer sets up the bolt hole all around, inner ring layer is the confined steel loop, the beneficial effects of the utility model are that: set up the trompil on the structure section of jurisdiction of being connected with the wind channel, the ventilation in -process, the new trend can get into the station through the trompil, guarantees the requirement of station to the air quality, set up the stiffener in section of jurisdiction inside, can improve the intensity and the atress performance of shield section of jurisdiction, guarantee the stability and the atress nature of sectionof jurisdiction. 本实用新型公开了种盾构管片，包括内圈层和外圈层，所述内圈层和所述外圈层固定连接；所述外圈层为封闭的混凝土环，外圈层四周内设置螺栓孔；所述内圈层为封闭的钢环；本实用新型的有益效果是：在与风道连接的构管片上设置开孔，通风过程中，新风能够通过开孔进入车站，保证车站对空气质量的要求；在管片内部设置加强钢筋，能够提高盾管片的强度和受力性能，保证管片的稳定性和受力性。