摘要
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。
The loading effects of road slab and vertical brace,after the action of Automobile over 20 & Trailer 120 heavy duty automobiles on them,are calculated for Dapu road tunnel in this paper,and result is compared with that of Automobile 120 & Trailer 80 of Automobile action.Unfavorable effects of Aubomobile over 20 & Trailer 120 heavy duty automobiles on existing tunnel road slab and vertical brace are analyzed.The calculated results show that the action of Automobile over 20 doesn't affect the safe use of the tunnel,and that the increase of partial loaded bearing and deformation of road slab is apparent as the result of the action of Trailer 120 heavy duty automobiles,which can't be ignored for road slab damage.Plate element is used to simulate tunnel lining,road slab and vertical brace,and spring element simulate the interaction between soil and tunnel.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2000年第1期44-47,共4页
China Journal of Highway and Transport
关键词
盾构隧道
路面板
支撑
重载汽车
强度
变形
shield tunnel
road slab
brace
heavy duty automobile
strength
deformation
