摘要
对某长距离输水渠道隧洞工程进行抗震安全性研究,通过查阅该隧洞工程的各类原有设计、勘察、施工、监测资料,在开展现场状况调查的基础上,人工进入隧洞内部排查、检测隐患,发现隧洞内部均存在不同程度裂缝、渗漏、冲刷坑等缺陷和问题。为降低地震破坏,减少损失,采用有限元结构分析软件Midas/FEA从抗震承载力验算、隧洞内水压力计算、反应位移法抗震计算、地震组合工况下内力、地震组合工况下剪力、地震组合工况下弯矩等指标角度对影响隧洞结构地震响应的关键因素以及结构的抗震薄弱部位进行抗震安全性分析研究,得出在正常使用状态下,各结构主体适于继续承载,但当遭遇本地区设防烈度地震时,可能出现混凝土构件强度不足、变形过大等情况的结论,并给出建议。
Study on seismic safety of a long-distance water conveyance tunnel project,through consulting all kinds of original design,investigation,construction and monitoring data of the tunnel project,on the basis of field investigation,manual inspection and detection of hidden dangers inside the tunnel.It is found that there are cracks,seepage and scour pits in different degrees in the tunnel.To mitigate earthquake damage and reduce losses,Finite element structure analysis software Midas/FEA from seismic bearing capacity calculation,calculation of tunnel internal water pressure,response displacement method aseismic calculation,combined the internal force under the condition of earthquake,earthquake combined shear force and bending moment with earthquake combined operating conditions under the condition of indicators of the key factors influencing the seismic responses of the tunnel structure and the structure of the seismic weak positions for seismic safety analysis and research In normal use,the main body of each structure is suitable to continue to bear the load,but when the local fortification intensity earthquake,there may be insufficient strength of concrete members,deformation and so on.
作者
傅柯
周八军
Fu Ke;Zhou Bajun(Xi’an Water(Group)Heihe Water Channel Management Co.,LTD.,Xi’an 710061,China)
出处
《吉林水利》
2022年第6期32-36,共5页
Jilin Water Resources
关键词
输水渠道工程
隧洞
抗震
安全研究
Channel
Engineering
Tunnel
Earthquake
Safety
research
