铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2014年
12期
113-115,116
,共4页
山岭隧道%排水率%水压力%衬砌受力
山嶺隧道%排水率%水壓力%襯砌受力
산령수도%배수솔%수압력%츤체수력
Mountain tunnel%Rate of drainage%Water pressure%Stress of lining
以某富水区山岭隧道为工程背景,通过建立有限元地层结构模型,对隧道结构在高水压力作用下的力学行为进行模拟分析,得出排水率对衬砌外侧水压力分布规律以及衬砌结构受力情况变化规律的影响。研究结果表明:通过改变排水率可以有效降低衬砌外侧水压力,但过低的降低排水率,衬砌外侧水压力降低效果不明显。
以某富水區山嶺隧道為工程揹景,通過建立有限元地層結構模型,對隧道結構在高水壓力作用下的力學行為進行模擬分析,得齣排水率對襯砌外側水壓力分佈規律以及襯砌結構受力情況變化規律的影響。研究結果錶明:通過改變排水率可以有效降低襯砌外側水壓力,但過低的降低排水率,襯砌外側水壓力降低效果不明顯。
이모부수구산령수도위공정배경,통과건립유한원지층결구모형,대수도결구재고수압력작용하적역학행위진행모의분석,득출배수솔대츤체외측수압력분포규률이급츤체결구수력정황변화규률적영향。연구결과표명:통과개변배수솔가이유효강저츤체외측수압력,단과저적강저배수솔,츤체외측수압력강저효과불명현。
This paper, based on the engineering practices of mountain tunnels in high water pressure and water-enriched region, simulates and analyzes the mechanical behavior of the tunnel structure in high water pressure and water-enriched region by establishing a finite structural model with soil layers. The effects of the rate of drainage on the external water pressure on lining and on the stress of lining structure are identified. The study results show that adjusting the rate of the drainage can effectively reduce the external water pressure on lining, but the rate of the drainage too low reduces the external water pressure on lining less obviously.