水下盾构隧道管道支座受力分析与设计
发布时间:2018-10-10 16:06
【摘要】:基于精细化设计水下盾构隧道管道支座的目的,以西气东输三线中卫黄河盾构穿越为例,通过采用CAESAR_Ⅱ软件对整个穿越段管道进行应力和位移分析,最终指导管道支座的设计。中卫黄河盾构隧道穿越处设计压力为12 MPa,管径为1 219 mm。盾构隧道两岸竖井中心之间水平投影长度为450 m,隧道内预留西四线管道。盾构内管道安装分为竖井内管道安装和平巷内管道安装,竖井内管道作为穿越段整体管道进行补偿计算。平巷内输气管道均安装在已浇筑好的钢筋混凝土管道支座上,西三线和西四线并排敷设,管道中心距为2.08 m,支座沿管道轴向间距每15 m一组,与管道之间铺10 mm厚绝缘橡胶板,并用管卡固定管道,防止管道运营时侧移和上浮。盾构隧道竖井中心两侧25 m外各设置固定墩1个,西三线和西四线管道合用1个固定墩。经软件计算得出支座管箍与管道之间的间隙距离,模拟了管道的位移情况,从而使管道支座设计更加精细化。
[Abstract]:Based on the purpose of meticulous design of pipeline support for underwater shield tunnel, the shield crossing of Huanghe River in the third line of west to east gas transmission is taken as an example. The stress and displacement analysis of the whole passage pipeline is carried out by using CAESAR_ 鈪,
本文编号:2262407
[Abstract]:Based on the purpose of meticulous design of pipeline support for underwater shield tunnel, the shield crossing of Huanghe River in the third line of west to east gas transmission is taken as an example. The stress and displacement analysis of the whole passage pipeline is carried out by using CAESAR_ 鈪,
本文编号:2262407
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