拉力分散型锚索在明挖隧道基坑围护结构中的应用  

Application of Tension Dispersion-type Anchor Rope in the Exterior Protected Structure of Open Cut Tunnel's Foundation Pit

作　　者：张连江[1] 

机构地区：[1]海南东环铁路有限公司,海南海口570125

出　　处：《科技情报开发与经济》2010年第13期155-157,共3页Sci-Tech Information Development & Economy

摘　　要：针对海南东环铁路美兰机场隧道工程,提出以拉力分散型锚索代替钢支撑的支护方案。通过拉力分散型锚索设计和施工以及现场监测,可及时掌握预应力锚索轴力变化及其对基坑支护结构和施工安全的影响。锚索加卸载试验以及监测数据表明,拉力分散型锚索对增强工程安全可靠性有显而易见的效果。In the light of Haikou Meilan Airport＇s Tunnel Engineering of Hainan East-ring Railway,this paper proposes the support scheme of replacing the steel support with the tension dispersion-type anchor rope.Through the design and construction and site monitoring of tension dispersion-type anchor rope,people can grasp timely the changes of axial force of pre-stressed anchor and the influences of these changes on the foundation pit support structure and construction safety.Anchor rope＇s loading and unloading tests and monitoring data show that the tension dispersion-type anchor rope has obvious effects on strengthening the safety and reliability of engineering.

关 键 词：拉力分散型锚索 明挖基坑 锚索轴力 施工监测 

分 类 号：U455[建筑科学—桥梁与隧道工程]