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针对打浦路隧道计算了汽—超 2 0、挂— 1 2 0重载汽车作用路面板和支撑的荷载效应 ,并与汽— 2 0、挂— 80汽车作用的计算结果进行了比较 ;分析了汽—超 2 0、挂— 1 2 0重载汽车作用对既有盾构隧道路面板和支撑带来的不利影响。计算结果表明 :汽—超 2 0汽车作用不影响隧道安全使用 ;挂— 1 2 0重载汽车作用 ,路面板局部受力和变形增大明显 ,对路面板损伤不容忽视。文中隧道衬砌、路面板和竖向支撑用板单元模拟 ,土与隧道的共同作用用土弹簧模拟。
For Dapulu tunnel, the effect of load acting on the pavement slabs and supports of steam-super 20 and trailer-120 heavy vehicles was calculated and compared with that of the steam-20 and the-80 vehicles. The effects of heavy-duty vehicles on the deck and support of the existing shield tunnels were adversely affected by the steam-over-20 and -over-120 vehicle loads. The calculation results show that the effect of steam-super-20 automobile does not affect the safe use of the tunnel; the effect of the heavy-duty vehicle linked to the load is obvious, the local stress and deformation of the road pavement increase obviously, and damage to the road pavement can not be ignored. In this paper, tunnel lining, pavement slab and vertical support plate unit simulation, soil and tunnel interaction with soil spring simulation.