地铁隧道结构沉降监测及分析  

Subsidence monitoring and analyzing in subway tunnel construction

作　　者：黄腾[1] 孙景领[1] 陶建岳 黄昱旻 

机构地区：[1]河海大学土木工程学院,南京210098 [2]南京地下铁道有限责任公司,南京210024

出　　处：《东南大学学报（自然科学版）》2006年第2期262-266,共5页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50279005)

摘　　要：论述了地铁隧道底板沉降监测基准网的构成、布设形式及其平差基准的选取,并对隧道内沉降测点、差异沉降点的布置和施测方法进行了简单地介绍;讨论了对监测基准网进行整体稳定性检验的平均间隙法;根据地铁隧道本身的特点,介绍了隧道沉降采用整体分析的方法与原理;结合南京地铁西延线隧道沉降监测实例,分析了隧道结构的沉降情况、沉降规律以及沉降成因,给出了有益的结论,为工程管理部门进行隧道结构加固、基础处理和道床修筑提供了决策依据.The composition, layout type and access of adjustment reference for subsidence monitoring datum net of subway tunnel boarding are expounded, and the layout and observation method of subsidence survey point and differential settlement point in tunnel are briefly introduced. The mean spacing method of test for stability of monitoring datum net are discussed, and the method and principle of global analysis to tunnel subsidence according to characteristics of subway tunnel are introduced. Taking the tunnel subsidence monitor of Nanjing metro west elongation line as an example, the settlement situation, rules and genesis of tunnel construction are analyzed. Favorable conclusion is made,which provides a decision-making reference to project-managing department for reinforcing tunnel structure, foundation treatment and rebuilding strem.

关 键 词：地铁隧道 沉降监测 稳定性检验 沉降槽 

分 类 号：U452[建筑科学—桥梁与隧道工程]