推荐回答(5个)
直径:6M,宽度:1.5M,厚度:0.3M,也有用于半径较小的特殊转弯管片,宽度为1.2M,其它数据相同。
盾构施工顺掘进方向,盾构切口前 30 m 以内和后50 m以内地表沉降值变化较大。其中,盾构切口后50 m地表沉降值变化显著。
盾构施工垂直掘进方向,地表呈槽型沉降,沉降最大点位于盾构中心上方,距盾构中心轴线越远沉降越小,离盾构中心轴线18 m (3倍盾构直径) 以外区域地表沉降值较小,考虑到观测误差,可认为不受盾构掘进影响。

地铁盾构使用注意事项
施工过程中正确地设定盾构正面平衡土压,平衡压力设定值应略低于理论值,推进速度不宜过快,盾构机在加固区推进时,为改善刀盘受力情况,需要通过设置在刀盘上的加泥孔,向前方土体加膨润土或者水进行土体改良。
待盾构出加固区时,为防止由于正面土质变化而造成盾构姿态突变,必须按工况条件及时调整平衡压力的值。施工过程中根据地层变形量等信息反馈对平衡压力设定值、推进速度、出土量等施工参数作及时调整。
以上内容参考 百度百科-地铁盾构
一般根据盾构机的尺寸有关。设计时候会考虑抗压、抗切、抗渗等,来定相应的管片。
地铁隧道管片一般为例:钢筋砼管片厚度300mm,内径Φ5400mm,环宽1500mm,盾构机Φ6260mm左右的。
也有用于半径较小的特殊转弯管片:环宽1200mm,盾构机Φ8800mm、Φ15000mm、Φ4300mm、Φ12000mm,各种盾构机的管片肯定不同。

扩展资料:
盾构管片是是隧道的最内层屏障,是盾构法隧道的永久衬砌结构,盾构管片质量直接关系到隧道的整体质量和安全,影响隧道的防水性能及耐久性能。
盾构继续掘进后,在盾构千斤顶推力、脱出盾尾后土(水)压力的作用下衬砌产生变形,拼装时紧固的连接螺栓会松弛。为此,待推进到千斤顶推力影响不到的位置后,用扭矩扳手等,再一次紧固连接螺栓。再紧固的位置随隧道外径、隧道线形、管片种类、地质条件等而不同。
参考资料来源:百度百科-盾构管片
各个地方的盾构管片直径不完全相同。但也大差不差。跟盾构机的尺寸有关。
以成都地铁管片为例:直径:6M,宽度:1.5M,厚度:0.3M。
也有用于半径较小的特殊转弯管片:宽度:1.2M,其它数据相同。
一般根据盾构机的尺寸有关。设计时候会考虑抗压、抗切、抗渗等,来定相应的管片。
地铁隧道管片一般为例:钢筋砼管片厚度300mm,内径Φ5400mm,环宽1500mm。盾构机Φ6260mm左右的。也有用于半径较小的特殊转弯管片:环宽1200mm。盾构机Φ8800mm、Φ15000mm、Φ4300mm、Φ12000mm,各种盾构机的管片肯定不同
管片外径6200mm,内径5500mm,管片厚度350mm,管片环宽1200mm,管片宽度和弧、弦长尺寸误差为正负1mm
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