盾构始发过程反力架应力监测与安全评价  

STRESS MONITORING AND SAFETY EVALUATION OF THE COUNTERFORCE FRAME DURING SHIELD ORIGINATING

作　　者：赵宝虎[1,2] 王燕群[1] 岳澄[1] 亢一澜[1] 王辉[1] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]中国人民解放军军事交通学院,天津300161

出　　处：《工程力学》2009年第9期105-111,共7页Engineering Mechanics

基　　金：国家973计划基金项目(2007CB714002);国家863项目(2007AA041804)

摘　　要：对武汉长江隧道盾构始发过程中的反力架进行了数值分析、现场监测和受力分析,根据监测结果对反力架的功能和作用进行了评价,对反力架的拆除条件给出了建议。结果表明:反力架的设计须考虑偶然因素的影响,如约束情况的突然改变等;可依据现场监测分析确定反力架的拆除时间。Numerical simulation, real-time stress monitoring and mechanical analysis are presented for the eounterforce frame used in the shield originating stage of the Wuhan Changjiang River tunnel. The function and efficacy of the frame are evaluated and a method for determining the demolition condition is discussed based on the monitoring. It is found that accidental factors, such as a sudden change of the restriction conditions, should be taken into account in the design. The demolition of the frame could be determined by in situ measurements.

关 键 词：盾构隧道 反力架 应力监测 数值模拟 安全评价 

分 类 号：O348[理学—固体力学] U455.43[理学—力学]