复杂场地条件下电力隧道的抗震设计  

Seismic Design of Power Cable Tunnels under Complex Site Conditions

作　　者：张喜 Zhang Xi(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,200092

出　　处：《特种结构》2020年第3期43-47,共5页Special Structures

摘　　要：电力隧道是保障大型城市电力通道输送安全的重要设施,提高隧道的抗震能力是保障社会公众利益和财产安全的重要措施。目前,反应位移法是地下结构抗震分析最常用的方法。结合具体工程,分别进行顶管隧道横向和纵向抗震分析。分析结果表明,地震工况不控制隧道配筋,纵向计算须满足结构变形性能。隧道直径大小和土层的变化,均会对地震工况下的内力产生很大影响,结论可以为类似工程抗震分析提供参考。Power cable tunnels are important facilities to ensure the safety of power transmission in large cities.Improving the seismic resistance of those tunnels is an important measure to protect public interest and property safety.At present,the response displacement method is the most commonly used method for seismic analysis of underground structures.In this paper,transverse and longitudinal seismic analysis of a pipe jacking construction tunnel are conducted respectively for a specific project.The analysis results show that the seismic conditions do not control the tunnel steel reinforcement.Longitudinal seismic calculation must satisfy structural deformation performance.Under earthquake conditions,changes in tunnel diameter and soil layer both have great influences on the internal force.Those conclusions can provide references for the seismic analysis of similar projects.

关 键 词：电力隧道 顶管 横向抗震分析 纵向抗震分析 反应位移法 

分 类 号：TM75[电气工程—电力系统及自动化] TU352.11[建筑科学—结构工程]