埋置式波纹钢-混凝土受力特性及地震动响应研究  

Research on Mechanical Characteristics and Ground Motion Response of Embedded Corrugated Steel Concrete

作　　者：华智 刘文德 李金标[1] HUA Zhi;LIU Wende;LI Jinbiao(Sichuan Communication Surveying&Design Institute Co.,Ltd.,Chengdu 610017;State Key Laboratory of Geohazards Prevention and Geoenviroment Protection,Chengdu University of Technology,Chengdu 610059)

机构地区：[1]四川省交通勘察设计研究院有限公司,成都610017 [2]成都理工大学地质灾害防治与地质环境保护国家重点试验室,成都610059

出　　处：《公路交通技术》2023年第2期138-144,共7页Technology of Highway and Transport

摘　　要：埋置式波纹钢-混凝土结构多用于公路明挖隧道和棚洞,但目前对该类结构的研究较少。以某绕城高速公路为例,针对在高填方填土荷载及地震动力荷载作用下,研究明挖隧道中使用波纹钢-混凝土结构作为顶棚的安全性及其地震动力响应规律。研究表明:1)在填土及地震动力荷载作用下,波纹钢-混凝土结构具有良好的整体受力性能,其挠度与应力均满足静力荷载下的安全要求;2)在选用的卧龙波作用下,波纹钢-混凝土结构在左侧拱肩处位移响应最大,在左侧拱肩至拱顶处应力与加速度响应最大;3)结构不同波峰、波谷、波中截面的地震动力响应差异不大。Embedded corrugated steel-concrete structures are mostly used in highway open-cut tunnels and sheds,but there are few studies on such structures.Taking a highway around the city as an example,under the action of high fill load and seismic dynamic load,the safety and seismic dynamic response law of using corrugated steel-concrete structure as the roof in open-cut tunnels are studied.The research shows that the corrugated steel-concrete structure has good overall mechanical performance under the action of filling soil and seismic dynamic load,and whose deflection and stress meet the safety requirements under static load.Under the selected Wolong wave action,the corrugated steel-concrete structure has the largest displacement response at the left spandrel,and the largest stress and acceleration response at the left spandrel to the vault.The seismic dynamic responses of the structures with different peaks,troughs,and mid-wave sections have little difference.

关 键 词：明挖隧道 波纹钢-混凝土结构 地震动力响应 数值模拟 

分 类 号：U451.4[建筑科学—桥梁与隧道工程]