Abstract:

The analysis and discussion are made on monitoring data anomaly of axial force for concrete support of Xujiapeng Station on Line No. 8 of Wuhan Railway Transit. The rationality of monitoring data alarming is studied; comparison among similar projects is made; and some countermeasures are discussed. Some conclusions are drawn as follows: 1) The axial force of concrete support measured after concrete casting and curing and before foundation pit excavation should be taken as initial value. 2) The temperature affects the axial force obviously. 3) The precision of reinforced bar gauge used for concrete support axial force monitoring is not good. Finally, some countermeasures and suggestions are given.

Key words: Metro station, foundation pit, axial force monitoring of concrete support, monitoring data alarming, abnormal data analysis