路基工程Issue(4)：64-69,6.DOI:10.13379/j.issn.1003-8825.2017.04.13
组合式消能棚洞结构受荷性能研究
Study on Load Performance of Combined-type Energy Dissipation Shed Tunnel
摘要
Abstract
The rockfall shed tunnel is a kind of common geological hazard prevention structure in highway traffic,which is mainly classified into two kinds,one is the traditional shed tunnel which absorbs the rockfall impact energy by the cushion layer;the other is the new shed tunnel which absorbs the impact energy by the spring energy dissipation and seismic mitigation.The paper studied load performance of a Combined-type energy dissipation shed tunnel through using the theory of thin plates,the theory of structural dynamics and coordinated deformation,getting the internal force analytical solution under the action of a rockfall impact and the internal force calculation expressions of the shed tunel cross beam and longitudinal beam.Taking the shed tunnels of the national highway G319 in Wulong for example,the internal force of energy dissipation shed tunnel was analyzed.The results show that,after energy dissipation shed tunnel being adopted,the maximnum bending moment of the crossbeam and the upper and lower side of longitudinal beam decreases 15.0 ％,17.3 ％ and 6.9 ％ respectively.It shows that the effect of internal force dissipation for energy dissipation shed tunnel is obvious and the bearing capacity of shed tunnel has been greatly increased.关键词
岩石力学/消能棚洞结构/薄板理论/崩塌落石/消能效果Key words
rock mechanics/energy dissipation shed tunnel/the theory of thin plate/collapse of rockfall/effect of energy dissipation effect分类
交通工程引用本文复制引用
廖方,陈洪凯..组合式消能棚洞结构受荷性能研究[J].路基工程,2017,(4):64-69,6.基金项目
国家自然科学基金(51678067,51378521,11272185) （51678067,51378521,11272185）
重庆市首席专家工作室专项经费(201605) （201605）
重庆市“两江学者”计划专项资金(201309) （201309）
2016年重庆高校创新团队建设计划资助项目(CXTDG201602012) （CXTDG201602012）
