摘要
为解决在开挖隧道过程中内外的土体由静止土压力转为主动土压力或被动土压力,应力状态的改变将导致隧道主体位移和变形问题。由于当这些位移量达到一定界限,必然对围护结构产生破坏,直接威胁施工及结构安全,特别是水池和地下压力水管,对沉降和位移相当敏感,常规对表体的监控量测已经不能满足要求。文章提出一种光纤光栅技术对深层土体(岩体)内部沉降位移量进行的监测方法,通过仿真结果表明:相比传统监测效果更好,具有一定的实际应用价值。
In order to solve the problem that the soil pressure inside and outside the tunnel changes from static earth pressure to active or passive earth pressure,the change of stress state will lead to the displacement and deformation of the tunnel body.When the displacement reaches a certain limit,it will destroy the envelope structure and threaten the construction and the safety of the structure.Especially the water tank and underground pressure water pipe are very sensitive to settlement and displacement,and the ordinary monitoring and measurement of surface body can not meet the requirements Therefore,this paper presents a method of monitoring the settlement and displacement of deep soil(rock mass)by fiber Bragg grating technology,it has certain practical application value.
作者
杨四海
陈鹏武
杨期江
朱胜山
徐东华
李斯翰
YANG Sihai;CHEN Pengwu;YANG Qijiang;ZHU Shengshan;XU Donghua;LI Sihan(China Luqiao District Engineering Co.,Ltd.,Beijing 100011,China;Experimental center,Guangzhou Maritime Univerity,Guangzhou 510725,China;Marine engineering college,Guangzhou Maritime Univerity,Guangzhou 510725,China;School of Shipbuilding and Ocean Engineering,Guangzhou Maritime Univerity,Guangzhou 510725,China)
出处
《机电设备》
2023年第5期90-94,共5页
Mechanical and Electrical Equipment
关键词
光纤光栅
土体实时位移量
监控量测
fiber bragg grating
real-time displacement of soil
monitoring measurement
