钢筋混凝土衬砌的裂缝监测与性态分析  

Crack Monitoring and Behavior Analysis for Reinforced Concrete Lining

作　　者：王志远[1] 苟晓丽[1] 

机构地区：[1]国电自动化研究院/南瑞集团公司,江苏省南京市210003

出　　处：《水电自动化与大坝监测》2006年第3期60-63,70,共5页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：介绍了监测衬砌裂缝可行的观测布置,并提出采用“衬砌截面应变是否呈线性分布”来评估裂缝的发展程度和衬砌的工作状态。此方法在山西引黄工程中结合自动化观测取得了成功,实时捕捉到若干处微裂缝在充水时迅速扩展的全过程。根据工程实际情况,还总结出微裂缝产生及继续扩展的临界值。研究发现,线性系数是混凝土微裂缝发展程度的有效指示器,为今后进一步研究洞室衬砌工作性态增加了一条新途径。A monitoring system for the observation of cracks in reinforced concrete lining is introduced. A method is presented to evaluate the development degree of cracks and the status of tunnel lining with the judgment of whether the strain of lining cross section is distributed linearly. This method has been proved successful in the practice of the Yellow River Diversion Project in Shanxi Province. The whole course of crack development in the water filling period is found. The critical value for describing the occurrence and development of cracks is determined. It is discovered that the coefficient of linearity may be an effective method to indicate the development degree of cracks in concrete. It is a new way to research the behavior of tunnel lining.

关 键 词：裂缝监测 衬砌 应变 微裂缝 线性分布 

分 类 号：TV698.1[水利工程—水利水电工程]